FR2630155A1 - STOP DEVICE IN ROTATION OF AN ARTICULATED ELEMENT - Google Patents

Abstract

The invention relates to a device for stopping in rotation an articulated element 2, in particular of a door 3, on a support element 4 or bodywork 5 of a vehicle. This device comprises a spring 6 with two branches 7, 8 which is fixed to an upright 10 integral with one of the aforementioned elements and which receives, by means of rollers 18, 19 mounted to rotate freely on its branches 7, 8 , a link arm 22 integral with the other element and equipped with stop means 40a, 40b capable of cooperating with the rollers 18, 19, characterized in that it comprises at least one elastic element 11, 12, acoustically insulating , arranged between the upright 10 and a tubular guide 13 which receives the free end 7a, 8a of the branches 7, 8 of the spring 6 and the rollers 18, 19 mounted on these branches. The invention applies, for example, to a motor vehicle of any type.

Description

The present invention essentially relates to a stop device

  in rotation of an articulated element, in particular of a door, on a support element

or bodywork of a vehicle.

  It is already known, for example from British Patent No. 449,671, a rotational stop device comprising a spring with two branches which is fixed, via a stamped housing, on a solidarity amount of one of the aforementioned elements and which receives, thanks to rollers freely rotating on its branches, a link arm secured to the other element. Thus, the connecting arm which is equipped with stop means formed by notches spaced and made on either side thereof, slides between the branches of the spring when opening or closing the door to immobilize and hold it in

  predetermined open positions.

  However, although this device allows an effective blocking and stopping of the door sufficiently stable in its different positions, it is source of noises generally amplified by the structure of the

  vehicle that forms sound box.

  Furthermore, it is known from French Patent No. 2,378,161, a device for stopping in rotation an articulated element, for example a door, in which the retaining force is obtained by means of elastic blocks pressing transversely on an arm of

  connection via cylinders or pads.

  Although being quieter, this device does not allow to ensure a sufficient blocking of the element

  articulated with respect to the support member.

  Thus, the object of the invention is to provide a rotational stop device ensuring an effective maintenance of the articulated element or door relative to the support element or body of the vehicle, and whose operation is perfectly silent. For this purpose, the subject of the invention is a device for stopping in rotation an articulated element, in particular a door, on a support element or bodywork of a vehicle, and of the type comprising a spring with two branches which is fixed on a fixed amount of one of the aforementioned elements and which receives, by means of rollers mounted free to rotate on its branches, a connecting arm secured to the other element and equipped with stop means cooperating with the rollers when the arm slides in said spring in a plane substantially perpendicular to the axis of rotation of the rollers, so as to limit the movement of the articulated element or door relative to the support element or body of the vehicle, characterized in it comprises at least one elastic, acoustically insulating element, disposed between the upright and a tubular guide which receives the free end of the branches

  spring and rollers mounted on these branches.

  According to another feature, the device according to the invention is provided with a second elastically acoustically insulating element, which is integral with the aforementioned amount and which maintains a working portion of the

  spring that is far away from its free ends.

  It will be further specified here that the device according to the invention comprises a base fixed on the amount and

  now the two elastic elements mentioned above.

  Moreover, according to one embodiment,

  each elastic element is monobloc.

  According to yet another characteristic, the device comprises a cover that can be fixed on the aforementioned base, to constitute therewith a

  boot, by imprisoning each elastic element.

  On the other hand, and according to another embodiment, each elastic element is made in two independent parts, one of the two parts being secured to the base while the other is secured to the cover. But other features and benefits of

  the invention will appear better in the description

  FIG. 1 is a sectional view of the rotational arresting device, the articulated element and the support element, and the accompanying drawings, given by way of example only, and in which: FIG. taken along line II of Figure 2; - Figure 2 is a longitudinal sectional view of the device according to the invention, taken along the line II-II of Figure 1; - Figure 3 is a sectional view taken along the line III-III of Figure 2; - Figures 3A and 3B are sectional views of another embodiment of the elastic members; and Figures 4, 5, 6, 7 and 8 are respectively perspective views of a first, a second, a third, a fourth and a fifth embodiment of the spring equipping the

  stopping device according to the invention.

  Referring to Figures 1 to 3, and according to a first embodiment, a rotational stop device 1 of an element 2, in particular a door 3, articulated on a support member 4, such as the body 5 of a vehicle, through a mechanism not shown, comprises a spring 6 said pinned, provided with two branches 7 and 8, substantially parallel and interconnected by means of a working part 9

elastically deformable.

  The spring 6 is fixed on a post 10 secured to the articulated element 2, by means of two elastic elements 11 and 12, acoustically insulating. The elastic element 1-1 receives the free ends 7a and 8a of the respective branches 7 and 8 of the spring 6, via a guide 13 of shape

essentially tubular.

  The guide 13 is equipped with two parallel walls 14 and 15 each provided with two slots 16 and 17 in which the

  respective free ends 7a and 8a of the spring 6.

  Furthermore, between the walls 14 and 15 are arranged rollers 18 and 19 respectively free mounted

  in rotation on the branches 7 and 8.

  The rollers 18 and 19 are respectively provided with outer peripheral grooves 20 and 21 in which is engaged a connecting arm 22 slidable between the branches 7 and 8 of the spring 6 in a plane PO substantially perpendicular to the respective axes of rotation X and Y of the rollers 18 and 19. On the other hand, the guide 13 comprises two parallel walls 23 and 24, perpendicular to the walls 14 and, respectively provided with openings 25 and 26.

  allowing the passage of the connecting arm 22.

  The second elastic element 12, meanwhile, is provided with a housing 27 adapted to receive the part

working 9 of the spring 6.

  On the other hand, the second elastic element 12 comprises a slot 28 opening into the housing 27 and

  allowing the insertion of the working part 9.

  Thus, it will be noted that the two elastic elements 11 and 12 are housed in a housing 29 fixed to the upright 10 by means of fastening means F constituted by two screws 30 and 31 arranged in orifices made in the upright 10 and cooperating

  with two corresponding nuts, not shown.

  The housing 29 comprises on the one hand a base 32, for example made of pressed plate and pressed against a face 10a of the upright 10 by means of the fastening system F, and on the other hand a cover 33, which can also be made in stamped t8le, shaped to receive the elastic elements 11 and 12 and for

  fit and attach to the base 32.

  Thus, to enable their joining, the base 32 and the cover 33 are equipped with a retaining means R. The retaining means R is formed on the one hand by plastically deformable tongues 32a, 32b, 32c and 32d provided for on the base 32 and coming from material with it, and secondly by plastically deformable tongues 33a and 33b formed by extensions of the cover 33 and covering the peripheral portions 32e and 32f of the base 32, these parts peripherals being deformed to be remote from the face 10a of the amount 10 by a greater or equal distance

  to the thickness of the tabs 33a and 33b.

  It will be specified here that the retaining means R may be constituted by two flanges, not shown, similar in cross section to the tabs 33a and 33b, visible in Figure 1, but extending over the entire

length of cover 33.

  Moreover, and as shown in FIGS. 1 to 3, the elastic elements 11 and 12

  can be monoblock elements.

  Thus, by fixing, for example by gluing, the elastic elements 11 and 12 on the base 32, it is

  possible to eliminate the cover 33.

  However, it will preferably equip the rotational stop device 1 of the cover 33, constituting, with the base 32, the casing 29, to protect the spring 6, the elastic elements 11 and 12

and guide 13.

  In addition, this arrangement makes it possible to introduce into the casing 29 a lubricating element, such as a high-viscosity grease, so as to permanently lubricate the device and ensure

-fiable and effective of it.

  Furthermore, it will be pointed out that the elastic elements 11 and 12, as shown in FIGS. 3A and 3B, can be separated longitudinally to form two independent parts 11a, 11b and 12a, 12b respectively, the first parts 12a and 11a being integral with the base 32 while the second

  parts 12b and 11b are integral with the bouvercle 33.

  Thus, this configuration makes it possible to change the elements housed in the casing 29 by disassembling the cover 33 and the parts 11b, 12b held on it, for example by gluing or the like, without first removing the fixing system F. FIG. 4 is a perspective view of the first embodiment of the spring 6, of the hairpin type, whose elastically deformable working portion 9 is made in the form of a half-torus 34, the end portions 34a and 34b of which are respectively

connected to branches 7 and 8.

  Referring to Figure 5, which shows a second embodiment of the spring 6, it will be noted that the working portion 9 is constituted by a turn whose end portions 35a and 35b are respectively connected to the branches 7 and 8. Of course and since branches 7 and 8 maintain a proper spacing, it is possible to arrange several turns 35 adjacent. FIG. 6 represents a third embodiment of the spring 6 similar to the first embodiment shown in FIG. 4 but in which the branches 7 and 8 have been bent substantially at 90 to constitute respectively two branch parts.

7b, 7c and 8b, 8c.

  Of course, and with reference to FIG. 7 which represents a fourth embodiment of the spring 6, the second and third embodiments can be combined to obtain a spring whose working portion 9 is constituted by a turn 35 and of which the branches 7 and 8 are respectively bent by an angle substantially equal to 90, the branch 7 then being constituted by two perpendicular branch portions 7b and 7c while the branch 8 is constituted

  by two perpendicular branch portions 8b and 8c.

  Referring to Figure 8 which shows a fifth embodiment of the spring 6 according to the invention, it will be noted that two half-toric portions 9a, 9b have been connected to the branches 7, 8 respectively. carrying the rollers 18, 19, and secondly between them by a branch 37 parallel to the two

others and working in torsion.

  Furthermore, and in order to allow the engagement of the connecting arm 22 between the rollers 19, 18, the plane Pl formed by the geometric axes of the branches 37 and 8 is shifted by an angle "<appropriate with respect to a plane P2 formed by the geometric axes of the branches 7 and 37. Thus, the five embodiments of the spring 6.which have been shown and which have just been described, make it possible to adapt the stop device in rotation 1

  the space requirements of a pre-determined vehicle

completed.

  The operation of the device is as follows.

  When the articulated element 2 or door 3 is actuated, for example by a passenger of the vehicle, it pivots relative to the support element 4 or body 5, which slides the connecting arm 22 inside the spring 6 , through the longitudinal openings 25 and 26 of the guide 13 and through passage slots 11p, 32p, 33p, 10p and 3p respectively formed in the elastic element 11, the base 32,

  the cover 33, the upright 10, and the door 3.

  When the rollers 18 and 19 which are actuated in rotation meet ramps 38 and 39 formed respectively on the faces 22a and 22b of the connecting arm 22 on which the rotating rollers 18 and 19 roll, the branches 7 and 8 of the spring 6 are urged.

in opposite directions.

  After having crossed the ramps 38 and 39, the rollers 18 and 19 penetrate into a first stop means constituted by notches 41 and 42 made

  respectively near the ramps 38 and 39.

  Thus, the articulated element 2 or door 3 is positively maintained in a first position of movement or stopping relative to the support element 4

or car body 5 of the vehicle.

  On the other hand, when the articulated element 2 is slightly pushed relative to this first stop position, the rotating rollers 18 and 19 cross second ramps 43 and 44, again spreading the branches 7 and 8 of the spring 6 until the rotary rollers 18 and 19 respectively penetrate into notches 45 and 46, forming a second stop means 40b,

  provided near the respective ramps 43 and 44.

  Thus, the articulated element 2 is stably held in a second stopping position corresponding to a predetermined opening or deflection.

  relative to the support element 4.

  Moreover, the movement of the articulated element 2 with respect to the support element 4 is limited by means of a hook 47 provided at the end

free of the connecting arm 22.

  To bring the articulated element 2 back to its first stop position, it suffices to apply a thrust directed towards it in the direction of the support element 4, the rotating rollers 18 and 19 crossing ramps 48 and 49 contiguous to the notches 45 and 46, for

  come and get into the notches 41 and 42.

  On the other hand, the articulated element 2 can be returned to its initial position, with respect to the support element 4, by applying to it an additional thrust force, to allow the rotating rollers 18 and 19 to cross ramps 50 and 51 respectively

contiguous to notches 41 and 42.

  Thus, thanks to the arrangement of elastic elements 11 and 12, acoustically insulating, between the upright 10 and the tubular guide 13, the device

  works extremely quietly.

  By way of example, the elastic elements 11 and 12 may be made of rubber or elastomer such as

than a polyurethane.

  Similarly, it will be pointed out that although the spring 6 has been described as being fastened to an upright secured to the articulated element 2, this spring can be fixed to a fixed amount of the support element 4, the linkage arm 22 being then solidarity with the element

articulated 2 or door 3.

  Of course, the invention is not limited to the embodiments described and illustrated and

  which have been given only as an example.

  On the contrary, the invention comprises all the technical equivalents of the means described and their combinations if they are carried out according to its spirit. 11 '

Claims (6)

R E V E N D I C A T I 0 N S   1. Device for stopping an articulated element (2), in particular a door (3), on a support element (4) or bodywork (5) of a vehicle, and of the type comprising a spring ( 6) with two branches (7, 8) which is fixed on an upright (10) secured to one of the aforementioned elements and which receives, via rollers (18, 19) mounted free to rotate on its branches, a connecting arm (22) secured to the other element and provided with stop means (40a, 40b) cooperating with the rollers (18, 19) when the arm (22) slides in said   spring (6) in a substantially perpendicular plane (PO)   relative to the support member (4) it comprises at least one acoustically insulating elastic element (11, 12) disposed between the upright (10) and a tubular guide (13) which receives the free end of the branches of the spring and   the rollers mounted on these branches.   2. Device according to claim 1, characterized in that it is provided with a second elastic member (12), acoustically insulating, which is integral with the upright (10) and which maintains a working portion (9) of the spring ( 6) which is far from its extremities free (7a, 8a).   3. Device according to claim 1 or 2, characterized in that it comprises a base (32) fixed on the upright (10) and now the two elements elastics (11, 12).   4. Device according to one of claims 1   at 3, characterized in that each elastic element (11, 12) is monobloc.   5. Device according to claim 3 or 4, characterized in that it comprises a cover (33) which can be fixed on the base (32) above, to form therewith a casing (29) trapping each elastic element ( 11, 12). 6. Device according to claim 5, characterized in that each elastic element (11, 12) is made in two independent parts (11a, 11b; 12b, 12b), one (12a, 11a) of the two parts being integral with the base (32) while the other (12b, llb) is secured to the lid (33).