WO2006114556A1

WO2006114556A1 - Hinge comprising a stop notch mechanism

Info

Publication number: WO2006114556A1
Application number: PCT/FR2006/050398
Authority: WO
Inventors: Joaquim Miranda Gomez Pereira
Original assignee: Emt Services
Priority date: 2005-04-28
Filing date: 2006-04-27
Publication date: 2006-11-02
Also published as: EP1877639A1; FR2885157B1; FR2885157A1

Abstract

The invention relates to a door hinge (300;500) comprising a first fixed lug (302) and a second lug (304) which is to be fixed to the door and can rotate about a rotational axis, said hinge consisting of a hinge rod (305) which passes through the first lug and the second lug, and a stop notch mechanism (301;501). Said mechanism comprises a stop notch element and an element for supporting a roller (514), one of the two elements being penetrated, at one end thereof, by an extension of the hinge rod, and at another end thereof, by a driving rod (329;515) which is fixed to an upper surface of the first lug. The penetrated element is thus fixed in relation to the first lug during the rotation of the second lug about the axle formed by the hinge rod.

Description

Hinge with detent mechanism

TECHNICAL FIELD OF THE INVENTION

The present invention relates to a hinge incorporating a particular retaining mechanism. It is particularly intended to be used as a car door hinge in motor vehicles, or in any other environment requiring the existence of intermediate positions in operations of opening and closing doors. The field of the invention is, in general, that of door hinges of the type of those, conventional, comprising in particular:

- a first knuckle, sometimes called a knuckle, attached to a frame associated with a door;

- a second knuckle, secured to the door; - A hinge pin defining an axis of rotation allowing the first knuckle and second knuckle to be articulated with respect to each other;

- A retaining mechanism, said mechanism comprising a plurality of elements for maintaining the first knuckle relative to the second knuckle according to different previously determined opening angles.

The object of the invention is to provide a door hinge associated with a retaining mechanism, of the type of those that have just been summarily mentioned, which is particularly robust and resistant, while having a low manufacturing cost .

In the state of the art, we already know a solution proposed by the applicant, which will be described with reference to Figures 1 and 2. The elements appearing in these two figures have retained, unless otherwise specified, the same references. Figures 1 and 2 show a first example of a hinge 100 with a mechanism 101 retaining notches of the state of the art. Conventionally, the hinge involves a first knuckle 102, said foot knuckle, intended to be fixed for example to the body of a vehicle by screws passing through first bores 103, and a second knuckle 104, said knuckle door, intended to be fixed on a door, for example of a motor vehicle, for example by means of screws through second bores not visible in the figures. The two knuckles 102 and 104 are coupled by means of a hinge pin 105, embodying an axis of rotation of the door knuckle 104. The hinge pin 105 may for example consist, at least partially, of a pivot pin in a self-lubricated ring.

The hinge 100 is completed by the mechanism 101 retaining notches. The latter is disposed on an upper face 106 of the door knuckle 104, or, as shown, via a lower plate 107 of the mechanism 101, the upper face 106 and the lower plate 107 can then be of similar shape, either directly without intermediate plate. In the case of the presence of the intermediate plate 107, the connection between the latter and the upper face 106 can be done by any known means. The mechanism 101 retaining notches comprises, in the example shown, the following elements:

an extension 108 of the hinge rod 105 serving to support a lower yoke 109 and an upper caliper 110, each having a first end 112 and a second end 11, the two yokes 109 and 110 being traversed by the extension 108; at their first end 112. In order to ensure the maintenance of the two stirrups, including by prohibiting any rotational movement around the extension 108, it is expected to provide, in the extension 108 of generally cylindrical shape, a flat section 113. a rotary roller 114, held between the second ends 111 of the two stirrups 109 and 110.

- a retaining element; in this state-of-the-art solution, the retaining catch element is divided into two distinct parts, namely a cam 115 and a strut 116. At least one of these two parts comprises at least one set of retaining catches 117. In certain exemplary embodiments, retaining catches are provided on each of these two parts; in the example shown, only the cam 115 has the retaining notches 117. The retaining notches 117 are predetermined locations of the rotary roller 114, which correspond to different door opening angles. Depending of opening / closing movements of the door to which the door knuckle 104 is attached, the rotary roller 114 moves from one retaining catch to the other in one or other of the directions in which it is likely to evolving. - A first pivot 118 and a second pivot 119, on which are respectively rotated the cam 115 and the strut 116; each of the two pivots 118 and 119 may in particular comprise a self-lubricating element.

a first spring 120 and a second spring 121, respectively wound around the first pivot 118 and the second pivot 119, which constitute a means of return of the retaining element against or towards the rotation roller 114. It does not It is not necessary that, when the rotary roller is positioned in a retaining notch, the cam 115 is actually in contact with said roller 114. In practice, it is sufficient, in such a situation, that the cam 115 is sufficiently close to the rotary roller 115 so that the latter can leave the notch in which it is found without encountering resistance at a boss 125 defining two successive retaining notches. By leaving a slight space, in the so-called equilibrium positions, or said initial positions, between the cam 115 and the rotary roller 114, the door is given a minimum of flexibility in each previously determined opening position associated with one of the retaining notches.

The winding of the springs 120 and 121 is such that they impose directions of rotation opposite to the rotational movement of the cam 115 around the first pivot 118 and the strut 116 around the second pivot 119. In the example shown , the first spring 120 and the second spring 121 are double twist: their winding around the pivots starts in a first direction of winding and ends in a second direction of winding opposite to the first direction of winding. The reversal of the direction of rotation takes place at an inversion zone 122 of each spring, in which the springs 120 and 121 form, in front view of the hinge 100, shown in FIG. at the base of which the first spring 120 - respectively the second spring 121- passes into an anchor point, not visible in the figures, of the cam 115 - respectively of the strut 116 -, to be able to take the piece associated with the point anchoring considered in rotation during the passage of the rotary roller 114 from a first retaining notch to a second retaining notch.

- an upper plate 123, for maintaining, in the retaining detent mechanism 101, the first pivot 118, the second pivot 119 and the extension 108.

- Locking lugs 124 to retain ends of each spring 120 and 121 and maintain the latter bandaged.

A movement of a door on which such a hinge has been fixed with a detent mechanism, resulting in the passage of the rotary roller 114 from a first notch to a second adjacent notch, is as follows:

When opening or closing a door, the door knuckle 104 rotates around the hinge pin 105, also causing rotation, around said rod 105, the catch mechanism 101. extension 108 of the hinge rod 105, integral with the foot knuckle 102, remains stationary relative to the body of the vehicle. The rotary roller 114, initially arranged in a first notch, then meets a boss 125 separating two consecutive notches. To allow it to cross the boss 125, the cam 115 and the strut 116 each start a rotational movement, in opposite directions of rotation, around their respective pivot 118 and 119.

In the embodiment shown, the cam 115 and the strut 116 remain in contact via a roller 126 in the form of a diabolo. The latter rolls, during the rotational movement of the cam 115 and the strut 116, along a contact zone 127 of the cam 115 and the strut 116. The presence of the diabolo 126 allows avoid direct friction between the cam 115 and the strut 116, thus including any grinding disappear. When the mechanism 101 is not in an equilibrium position, which occurs when the rotary roller 114 passes a boss 125, the strut 116 exerts pressure on the cam 115 to return it to its equilibrium position. .

Once the boss 125 crossed, the rotational roller 114 reaches a new notch retention. The return springs exert their pressure respectively on the cam 115 and on the strut 116 to bring these two parts back to their initial position. In certain exemplary embodiments, it is intended to cover the retaining mechanism 101 with a protective cover 128. This provides a door hinge that can be permanently mounted on a motor vehicle, which can pass, during manufacture of the vehicle in question, in the various paint and treatment baths without any risk for the retaining mechanism.

However, in the solution just described, it is necessary to equip the hinge rod 105 with drive notches. There is thus provided a first set of drive notches 129, disposed on the periphery of the hinge pin 105 where it passes through a lower face 130 of the foot knuckle 102, and a second set of drive notches 131 disposed on the periphery of the hinge pin 105 at the point where it passes through an upper face 132 of the hocking knuckle 102. The lower 130 and upper 132 faces of the hoof knuckle 102 must have been machined to present at these locations, a certain roughness to permanently secure the hinge rod 105 to the foot knuckle 102 through the drive notches. If the presence of such drive notches overcomes delicate welding operations between the hinge pin 105 and the foot knuckle 102, it however substantially increases the manufacturing cost of the hinge; moreover, such a solution risks, by wear, to reveal a certain clearance between the hinge pin 105 and the foot knuckle 102, a game which reduces the precision of the retaining latch mechanism. GENERAL DESCRIPTION OF THE INVENTION The door hinge with retaining mechanism according to the invention responds in particular to the problems just mentioned. In the invention, it is proposed to spare no drive notches on the hinge rod, to minimize the manufacturing costs of the hinge, and to eliminate the risk of play between the hinge rod and the hinge pin. foot.

For this purpose, it is proposed, in the invention, to have a drive rod, secured with the foot knuckle, to participate in maintaining one of the two essential elements constituting the retaining mechanism, namely an element. support for holding notches, or an element supporting a rotating roller moving from a retainer to another during a movement of the door associated with the hinge.

The invention therefore essentially relates to a door hinge comprising in particular: a first knuckle intended to be fixed on a frame of the door;

a second knuckle intended to be fixed on the door;

- An axis of rotation, materialized by a hinge pin, passing through the first knuckle and the second knuckle, allowing the second knuckle to evolve in rotation about said axis during an opening or closing operation of the door;

- a retaining mechanism including two main elements:

- A retaining latch element, comprising a set of retaining notches, each retaining notch corresponding to a predetermined opening angle of the door;

- A support member of a rotary roller for changing from one of the retaining notches to another of the retaining notches during the opening or closing operation of the door; characterized in that one of the two main elements, to maintain it fixed relative to the first knuckle during the rotational evolution of the second knuckle around the axis materialized by the hinge rod, is crossed:

at a first end, by an extension of the hinge rod; - At a second end, by a drive rod secured to an upper face of the first knuckle, the drive rod moving in a first opening in an upper face of the second knuckle during the opening operation or closing the door. The door hinge according to the invention may comprise, in addition to the main features which have just been mentioned in the preceding paragraph, one or more additional characteristics among the following:

the element traversed by the extension of the hinge rod and by the drive rod is the support element of the rotary roller; the supporting element of the rotary roller is composed of an upper stirrup and a lower stirrup, the upper stirrup and the lower stirrup each having in particular a first end traversed by the extension of the hinge rod, and a second end holding the rotating roller, the drive rod being disposed in the extension of a central axis of the rotary roller;

the retaining catch element consists of a cam and a strut which have between them a zone of contact, in particular when the rotary roller is placed in one of the retaining notches of the set of retaining catches the cam being rotated about a first pivot and the strut being rotatably mounted around a second pivot;

the cam and the strut are in contact with each other, in particular during the passage of the rotary roller from one notch of the set of notches to a second notch of the set of notches; retained by means of a diabolo;

- The retaining detent mechanism comprises a return means of the retaining detent element towards the rotary roller;

- The return means of the retaining detent element towards the rotary roller is constituted by a first spring and a second spring, the first spring being wound around the first pivot, and the second spring being wound around the second. pivot;

the first spring and / or the second spring are double twisted;

- The cam and the strut each comprise an anchor point respectively of the first spring and the second spring; - The element through which the extension of the hinge rod and the drive rod is a retaining element;

- The retaining latch member is a cam having in particular a first end through which the extension of the hinge pin, and a second end at which are disposed the set of retaining notches and the drive rod;

the supporting element of the rotary roller is composed of an upper stirrup and a lower stirrup, the upper stirrup and the lower stirrup each having in particular a first end mounted in rotation on a first pivot fixed on an upper face of second knuckle, and a second free end, the upper stirrup and the lower stirrup now between them the roller rotary;

the first pivot comprises at least one self-lubricating element;

the upper stirrup and the lower stirrup each have a free end through which the same return rod passes, a lower end of the return rod moving in a second opening formed in the upper face of the second knuckle during the operation of opening or closing the door;

an upper end of the return rod passes through an upper plate of the retaining detent mechanism at an opening in said upper plate, said upper end moving in said opening during the opening or closing operation of the door ;

- An upper end of the return rod is returned to the equilibrium position, corresponding to a positioning of the rotary roller in one of the retaining notches, by a resilient return means disposed on the upper plate of the retaining detent mechanism;

- The hinge comprises a protective cover of the retaining mechanism.

The invention and its various applications will be better understood by reading the following description and examining the figures that accompany it.

BRIEF DESCRIPTION OF THE FIGURES

These are presented only as an indication and in no way limitative of the invention. The figures show: in FIG. 1, already described, a first view of a first exemplary embodiment of a hinge with a retaining mechanism according to an exemplary embodiment of the state of the art;

in FIG. 2, a second view of the example of FIG. 1;

- In Figure 3, a first view of a first embodiment of a hinge with retaining mechanism according to an embodiment of the invention;

in FIG. 4, a second view of the example of FIG. 3;

- In Figure 5, a first view of a second embodiment of a hinge with retaining mechanism according to an embodiment of the invention; in FIG. 6, a second view of the example of FIG. 5;

in FIG. 7, a more detailed view of part of the example of FIG.

DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION

Two distinct embodiments of the invention, corresponding respectively to FIGS. 3 and 4 and 5 to 7, are now detailed. The elements appearing in these various figures have retained, unless otherwise specified, the same references In the first embodiment, illustrated by Figures 3 and 4, there is described a first hinge 300 with a mechanism 301 retaining notches; the following different elements of the hinge 300 were already present in the description of the example of the state of the art previously described with reference to Figures 1 and 2; their shape and their function - unless otherwise specified - is unchanged in this first embodiment with respect to the example of the state of the art described:

a first knuckle 302, called a knuckle, with bores 303;

a second knuckle 304, called a door knuckle; - A hinge rod 305, embodying an axis of rotation of the door knuckle 304. Note that the drive notches present in the state of the art have been removed in this embodiment; such suppression has particular economic advantage;

an upper face 306 of the door knuckle 304 on which the retaining latch mechanism 301 is arranged, as shown, by means of a lower plate 307 of the mechanism 301, the upper face 306 and the lower plate 307 being able to then be of similar shape, either directly without intermediate plate;

an extension 308 of the hinge rod 305, serving as a support for a lower yoke 309 and an upper yoke 310, each having a first end 312 and a second end 311, the two yokes 309 and 310 being traversed by the extension 308; at their first end 312. In some embodiments, it is expected to provide, in the extension 308 of generally cylindrical shape, a flat section 313; a rotary roller 314 held between the second ends 311 of the two stirrups 309 and 310.

a retaining catch element decomposing into two distinct parts, namely a cam 315 and a strut 316, at least one of these two parts comprising at least one set of retaining notches 317, bosses 325 delimiting two notches successive restraints. In some embodiments, retaining notches are provided on each of these parts; in the example shown, only the cam 315 has the retaining notches 317; the cam 315 and the strut 316 remain in contact via a roller 326 shaped diabolo. The latter rolls, during the rotational movement of the cam 315 and the strut 316, along a contact zone 327 of the cam 315 and the strut 316;

- A first pivot 318 and a second pivot 319, on which are respectively rotated the cam 315 and the strut 316; each of the two pivots 318 and 319 may in particular comprise a self-lubricating element.

a first spring 320 and a second spring 321, associated with locking lugs 324, the springs being wound respectively around the first pivot 318 and the second pivot 319, which constitute a return means of the retaining detent element against or to the rotation roller 114; the first spring 320 and the second spring 321 are in this example double twist; the reversal of the direction of rotation takes place at an inversion zone 322 of each spring, in which the springs 320 and 321 form, in front view of the hinge 300, shown in FIG. elongated;

- An upper plate 323 of the retaining mechanism 301, for maintaining in the retaining mechanism 301, the first pivot 318, the second pivot 319 and the extension 308; a protective cover 332 for covering the retaining mechanism 301.

In the invention, it is generally proposed, in order to compensate for the economically and mechanically profitable disappearance of the drive notches, to equip the hinge according to the invention with a drive rod 329. is disposed at the second end lower stirrup 309, secured to the latter, for example in the extension of a central axis 330 of the rotary roller 314. The drive rod is extended to an upper face 331 of the first knuckle 302 to which it is secured, for example by crimping. The driving rod 329 therefore passes through the upper face 306 of the second knuckle 304 and, when it exists, the lower plate 307 of the mechanism 301, at a first opening 331 formed in the upper face 306, and, where appropriate in the bottom plate 307.

The first opening 331 has dimensions adapted so that the second knuckle 304 can change in rotation, during a movement of the door associated with the hinge 300, without being blocked by the presence of the drive rod 329. The various elements intervening in this example of the invention retain the same operation as previously described during a movement of the door. In the second exemplary embodiment, illustrated by FIGS.

7, there is described a second hinge 500 with a mechanism 501 retaining notches; the following different elements of the hinge 500 were already present in the description of the example of the state of the art, and the first embodiment of the invention described above; their shape and their function - unless otherwise specified - is unchanged in this first embodiment with respect to the example of the state of the art described:

the first knuckle 302 with the bores 303;

the second knuckle 304; - The hinge rod 305, embodying an axis of rotation of the door knuckle 304. Again, the drive notches present in the state of the art have been removed in this embodiment;

- The upper face 306 of the door knuckle 304 on which is disposed the retaining mechanism 501; in certain exemplary embodiments, the retaining latch mechanism 501 is disposed on the upper face 306 via a lower plate of the mechanism 501;

an extension 508 of the hinge rod 305; in this embodiment, the extension 508 serves to support a cam 509, having a first end 512 and a second end 511, the 509 cam is traversed by the extension 508 at its first end 512. The extension 508 is secured to an upper plate 502 of the retaining latch mechanism 501. In some embodiments, it is intended to provide, in the extension 508 of generally cylindrical shape, a flat section; in this example, retaining notches 517 are disposed at the second end 511 of the cam 509; bosses 525 delimiting two successive retaining notches;

- a lower yoke 506 and an upper yoke 507, each having a first end 504 and a second end 505, the two yokes 506 and 507 being rotatably mounted about a lever axis 503 at their first end 504. The upper stirrup and the lower stirrup can for example be connected by a central element not shown, in order to stiffen the structure they constitute, and thus constitute a single piece. The lever axis is held stationary between the upper face 306 of the door knuckle 304 and the upper plate 502 of the retaining latch mechanism 501. The lever shaft 503 may in particular comprise two self-lubricating rings 513;

a rotary roller 514, held between the upper yoke 507 and the lower caliper 506, in an approximately central zone of the two calipers;

a return means 526, for example a spring, arranged on the upper plate 502 of the retaining latch mechanism 501;

- The protective cover 332 to cover the retaining latch mechanism 301. In this second embodiment, there is a drive rod 515. This time it is disposed at the second end 511 of the cam 509 , by being solidarisée with this last one. The drive rod 515 is extended to the upper face 331 of the first knuckle 302 to which it is secured, for example by crimping. The drive rod 515 thus passes through the upper face 306 of the second knuckle 304 at a first opening 516 formed in the upper face 306.

The first opening 516 has dimensions adapted so that the second knuckle 304 can evolve in rotation, during a movement of the door associated with the hinge 500, without being blocked by the presence of the drive rod 515.

A movement of a door on which such a hinge 500 has been fixed with a detent mechanism 501, resulting in the passage of the rotary roller 514 from a first notch to a second adjacent notch, is as follows:

When opening or closing a door, the door knuckle 304 rotates around the hinge pin 305, also causing the retaining latch mechanism 501 to rotate about said rod 305. extension 508 of the hinge rod 305, integral with the foot knuckle 302, and the cam 509 fixed on this extension, remain stationary relative to the body of the vehicle. The rotary roller 514, initially arranged in a first notch, then meets a boss 525 separating two consecutive notches. To allow it to cross the boss 525, the assembly consisting of the lower yoke 506 and the upper yoke 507 pivots about the lever axis 503, thus allowing the rolling roller 514 to rotate from a boss to the yoke. 'other. During the pivoting of the assembly formed by the two stirrups 506 and 507, the drive rod moves through the first opening 516.

In this example, to ensure the return of the assembly constituted by the two stirrups, provision is made to have a return rod 518 at their second end 505, constituting their free end. The return rod 518 has a lower end 519 intended to evolve in a second opening 520 formed in the upper face 306 of the second knuckle 304, and an upper end 521, passing through the upper plate 502 of the latch mechanism 501 at the level of an opening 522 in this plate. The upper end is in abutment against a spring end 515, so that the stirrups 506 and 507 are returned to a position of equilibrium - or initial position - via the return rod 518 when a boss 525 has been crossed.

Claims

1- Door hinge (300; 500) comprising in particular:

a first knuckle (302) intended to be fixed on a frame of the door; a second knuckle (304) intended to be fixed on the door;

- An axis of rotation, materialized by a hinge pin (305), passing through the first knuckle and the second knuckle, allowing the second knuckle to evolve in rotation about said axis during an opening or closing operation of the door ; a mechanism (301; 501) with retaining catches comprising in particular two main elements:

- a retaining catch element (315; 509) having a set of retaining notches (317; 517), each retaining catch corresponding to a predetermined opening angle of the door; a support member (309; 310; 506; 507) of a rotary roller (514) intended to change from one of the retaining notches to another of the retaining notches during the opening or closing operation of the door ; characterized in that one of the two main elements, to maintain it fixed relative to the first knuckle during the rotational evolution of the second knuckle around the axis materialized by the hinge rod, is crossed:

- at a first end (312; 512), by an extension (308; 508) of the hinge rod;

- At a second end (311; 511), by a drive rod (329; 515) secured to an upper face (331) of the first knuckle, the drive rod moving in a first opening (331; 516) formed in an upper face (306) of the second knuckle during the opening or closing operation of the door.

2- Door hinge (300) according to the preceding claim characterized in that the element traversed by the extension of the hinge rod and the drive rod is the support member (309; 310) of the rotary roller.

3- door hinge according to the preceding claim characterized in that the support member of the rotary roller is composed of an upper stirrup (310) and a lower stirrup (309), the upper stirrup and the stirrup lower each having in particular their first end (312) traversed by the extension of the hinge pin, and their second end (311) holding the rotary roller, the drive rod being arranged in the extension of a central axis (330) rotary roller. 4- door hinge according to at least one of claims 2 or 3 characterized in that the retaining latch member consists of a cam (315) and a strut (316) which are between them a contact zone (327) in particular when the rotary roller is placed in one of the retaining notches of the set of retaining catches, the cam being rotated around a first pivot (318) and the strut being mounted in rotation about a second pivot (319).

5- Door hinge according to the preceding claim characterized in that the cam and the strut are in contact with each other, in particular during the passage of the rotary roller of a first notch of the set of notches retained at a second notch of the set of retaining notches, via a diabolo (326).

6. Door hinge according to at least one of claims 2 to 5 characterized in that the retaining detent mechanism comprises a return means (320; 321) of the retaining member to the rotating roller.

7- Door hinge according to the preceding claim characterized in that the return means of the retaining detent element towards the rotary roller is constituted by a first spring (320) and a second spring (321), the first spring being wound around the first pivot, and the second spring being wound around the second pivot.

8- Door hinge according to the preceding claim characterized in that the first spring and / or the second spring are double twist.

9- Door hinge according to at least one of claims 4 to 8 characterized in that the cam and the strut each comprise an anchor point (324) respectively of the first spring and the second spring.

10- Door hinge (500) according to claim 1 characterized in that the element through which the extension of the hinge rod and the drive rod (515) is the retaining element (509). 11- Door hinge according to the preceding claim characterized in that the retaining latch member is a cam having in particular a first end (512) traversed by the extension (508) of the hinge pin, and a second end (511) at which are disposed the set of retaining notches and drive rod.

12- door hinge according to at least one of claims 10 or 11 characterized in that the supporting element of the rotary roller is composed of an upper stirrup (507) and a lower stirrup (506), the stirrup upper and the lower yoke each having in particular a first end (504) rotatably mounted on a first pivot (503) fixed on an upper face of the second knuckle (306), the upper yoke and the lower yoke maintaining between them the rotary roller.

13- Door hinge according to the preceding claim characterized in that the first pivot comprises at least one self-lubricating element.

14- door hinge according to at least one of claims 12 or 13 characterized in that the upper yoke and the lower yoke each have a free end (505) traversed by a same rod (518) of return, one end lower (519) of the return rod moving in a second opening (520) formed in the upper face of the second knuckle during the opening or closing operation of the door.

15- Door hinge according to the preceding claim characterized in that an upper end (521) of the return rod passes through an upper plate (502) of the retaining detent mechanism at an opening (522) formed in said plate upper, said upper end moving in said opening during the opening or closing operation of the door.

16- door hinge according to the preceding claim characterized in that the upper end of the return rod is returned to the equilibrium position, corresponding to a positioning of the rotary roller in one of the retaining notches, by a resilient biasing means (526) disposed on the top plate of the retainer mechanism.

17- door hinge according to at least one of the preceding claims characterized in that it comprises a protective cover (332) of the retaining detent mechanism.