FR2545768A2 - Torque limiting device for a mechanism for controlling a rear view mirror - Google Patents
Torque limiting device for a mechanism for controlling a rear view mirror Download PDFInfo
- Publication number
- FR2545768A2 FR2545768A2 FR8307688A FR8307688A FR2545768A2 FR 2545768 A2 FR2545768 A2 FR 2545768A2 FR 8307688 A FR8307688 A FR 8307688A FR 8307688 A FR8307688 A FR 8307688A FR 2545768 A2 FR2545768 A2 FR 2545768A2
- Authority
- FR
- France
- Prior art keywords
- limiting device
- torque limiting
- pinions
- engaged
- mirror
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/02—Rear-view mirror arrangements
- B60R1/06—Rear-view mirror arrangements mounted on vehicle exterior
- B60R1/062—Rear-view mirror arrangements mounted on vehicle exterior with remote control for adjusting position
- B60R1/07—Rear-view mirror arrangements mounted on vehicle exterior with remote control for adjusting position by electrically powered actuators
- B60R1/072—Rear-view mirror arrangements mounted on vehicle exterior with remote control for adjusting position by electrically powered actuators for adjusting the mirror relative to its housing
Abstract
Description
Dispositif limiteur de couple pour mécanisme de commande d'un miroir de rétroviseur.Torque limiting device for a mirror mirror control mechanism.
La présente addition a pour objet un perfectionnement z un mécanisme de commande d'un miroir de rétroviseur. The present addition relates to an improvement z a mechanism for controlling a rear-view mirror.
Le brevet principal concerne un dispositif dans lequel le miroir est fixé sur un organe de support monté pivotant suivant deux axes perpendiculaires, sur une chape solidaire d'une platine montée dans le boîtier, ladite platine supportant deux pignons entrat- nés en rotation par des organes moteurs, lesdits pignons présentant un trou central taraudé dans lequel est engagée une partie filetée d'un élément tubulaire solidaire d'organes de commande articulés sur la face arrière de l'organe de support du miroir, afin de communiquer à celui-ci un mouvement de pivotement suivant les deux axes perpendiculaires.La partie tubulaire à partie filetée des organes de commande est réalisée en un matériau déformable et présente au moins une fente axiale débouchant à l'une des extrémités de la partie tubulaire, de telle sorte qu'un effort appliqué axialement sur organe de commande permet au filetage de se dégager radialement du taraudage. The main patent relates to a device in which the mirror is fixed on a support member mounted to pivot on two perpendicular axes, on a yoke secured to a plate mounted in the housing, said plate supporting two pinions driven in rotation by members. motors, said pinions having a threaded central hole in which is engaged a threaded part of a tubular element integral with control members articulated on the rear face of the mirror support member, in order to communicate a movement to the latter pivoting along the two perpendicular axes. The tubular part with threaded part of the control members is made of a deformable material and has at least one axial slot opening at one of the ends of the tubular part, so that an effort applied axially to the control member allows the thread to disengage radially from the thread.
Toutefois, dans ce dispositif, les pignons sont montés sur la platine au moyen d'une vis et d'une rondelle et ceci ne permet pas d'obtenir en permanence un alignement de l'axe du pignon et de l'axe de l'organe de commande d'où il résulte une résistance mécanique importante. Ce mode de liaison présente également l'inconvénient de comporter un.jeu axial qui, même très faible, engendre des vibrations du miroir et donne des images tremblées,
I1 est également connu par le brevet français 79 24 114 un dispositif de commande de miroir, dans lequel on a aussi recherché un alignement de l'axe de la transmission de la commande.However, in this device, the pinions are mounted on the plate by means of a screw and a washer and this does not allow permanent alignment of the pinion axis and the axis of the control member which results in significant mechanical resistance. This connection mode also has the disadvantage of comprising an axial clearance which, even very weak, generates vibrations of the mirror and gives shaky images,
I1 is also known from French patent 79 24 114 a mirror control device, in which an alignment of the axis of the command transmission has also been sought.
Cependant, ce mode de réalisation nécessite des tolé.- rances de fabrication extrêmement serrées entre les différents éléments. However, this embodiment requires extremely tight manufacturing tolerances between the different elements.
Ces éléments présentant des tolérances rigoureuses sont nombreux et comprennent des roues à vis sans fin qui sont montées à l'intérieur des boîtiers supérieur et inférieur pour permettre la rotation des vis en appui sur le fond du boîtier inférieur par un fond hémisphé- rique et par une surface de glissement de forme correspondante à une surface courbe située sur la partie inférieure des vis. Il en résulte donc de grandes difficultés de fabrication. These elements having rigorous tolerances are numerous and include worm wheels which are mounted inside the upper and lower housings to allow the rotation of the screws bearing on the bottom of the lower housing by a hemispherical bottom and by a sliding surface of shape corresponding to a curved surface located on the lower part of the screws. This therefore results in great manufacturing difficulties.
Conformément à la présente addition, les pignons présentant un trou central taraudé dans lequel est engagée la partie tubulaire des organes de commande et qui présente au moins une fente axiale, débouchant à l'une de ses extrémités, sont montés sur le fond du boîtier au moyen d'une rotule maintenue élastiquement, de telle sorte que les organes de commande sont toujours dans l'alignement de l'axe des pignons d'entraînement. In accordance with this addition, the pinions having a threaded central hole in which is engaged the tubular part of the control members and which has at least one axial slot, opening at one of its ends, are mounted on the bottom of the housing at by means of a ball joint held resiliently, so that the control members are always in alignment with the axis of the drive pinions.
Cette disposition est obtenue en raison de l'alignement automatique du à la possibilité de mouvement de la rotule dans son palier élastique sur le fond du boltier, ce qui supprime les résistances mécaniques et procure une fiabilité accrue dans la transmission. Lors de la commande du porte-miroir, le désengrènement entre la vis sans fin et la roue tangente étant extrêmement faible' cela ne nuit pas à la transmission. This arrangement is obtained due to the automatic alignment due to the possibility of movement of the ball joint in its elastic bearing on the bottom of the bolt, which eliminates mechanical resistance and provides increased reliability in the transmission. When ordering the mirror holder, the disengaging between the worm and the tangent wheel being extremely low, this does not harm the transmission.
Par ailleurs, cette disposition permet la suppression de la rondelle et de la vis et un gain de temps au montage, ce qui procure un abaissement du court de fabrication. En effet, la mise en place de la rotule s'effectue en exerçant une force de pression sur celle-ci, qui assure l'écartement élastique des organes flexibles du palier et le maintien de la rotule sans jeu lorsque lesdits organes flexibles reviennent en place élastiquement, permettant néanmoins la rotation de la rotule lors de la commande du mouvement du porte-miroir. Furthermore, this arrangement allows the removal of the washer and the screw and saves time during assembly, which results in a lowering of the manufacturing short. Indeed, the establishment of the ball joint is effected by exerting a pressure force on it, which ensures the elastic spacing of the flexible members of the bearing and the maintenance of the ball joint without play when said flexible members return in place elastically, nevertheless allowing the rotation of the ball when controlling the movement of the mirror holder.
Enfin, il est difficile, lors de la fabrication, de réaliser un assemblage libre et sans jeu axial de la roue tangente, ou pignon, en raison des tolérances à observer pour la cote du fond de boîtier et de l'épaulement de la roue tangente ou pignon monté rotatif dans un palier. Finally, it is difficult, during manufacture, to carry out a free assembly and without axial play of the tangent wheel, or pinion, because of the tolerances to be observed for the dimension of the bottom of the housing and the shoulder of the tangent wheel. or pinion rotatably mounted in a bearing.
Or, dans tout mécanisme de commande du porte-miroir, le jeu axial, même très faible de la transmission, engendre des vibrations du miroir et donne des images tremblées. However, in any control mechanism of the mirror holder, the axial play, even very small of the transmission, generates vibrations of the mirror and gives shaky images.
D'une part, la partie tubulaire à partie filetée des organes de commande est élastique et en appui sur le filetage intérieur des pignons, ce qui procure un montage sans jeu. On the one hand, the tubular part with a threaded part of the control members is elastic and bears on the internal thread of the pinions, which provides a mounting without play.
D'autre part, le montage de la rotule dans son palier sur le fond du boîtier inférieur présente une résistance d'arrachement axiale beaucoup plus importante que celle du limiteur de couple formé par la partie filetée en prise avec le filetage intérieur des pignons, de telle sorte que, lorsqu'un appui est.exercé sur le porte-miroir, le limiteur de couple se libère. On the other hand, the mounting of the ball joint in its bearing on the bottom of the lower housing has a much greater axial pullout resistance than that of the torque limiter formed by the threaded part engaged with the internal threads of the pinions, such that when a pressure is exerted on the mirror holder, the torque limiter is released.
I1 en résulte que le dispositif perfectionné suivant l'addition peut fonctionner librement, sans jeu et avec un rattrapage de jeu fourni par les éléments élastiques dont il est composé. I1 follows that the improved device according to the addition can operate freely, without play and with a play catch provided by the elastic elements of which it is composed.
D'autres caractéristiques et avantages de l'invention seront mieux compris à la lecture de la description qui va suivre d'un mode de réalisation et en se référant aux dessins annexés, sur lesquels
- la figure 1 est une vue en élévation et en coupe du dispositif limiteur de couple et du moyen de montage d'un pignon sur le fond du boîtier;
- la figure 2 est une variante de réalisation de la cheminée.Other characteristics and advantages of the invention will be better understood on reading the following description of an embodiment and with reference to the accompanying drawings, in which
- Figure 1 is an elevational and sectional view of the torque limiting device and the means for mounting a pinion on the bottom of the housing;
- Figure 2 is an alternative embodiment of the chimney.
A la figure 1, on a représenté l'une des roues tangentes ou pignon 6 qui comporte un bossage central 15 muni d'un trou taraudé 16, dans lequel est engagée une partie filetée 17 d'une partie tubulaire 18 d'un organe de commande dont le fond 19 porte une rotule 20 munie de tétons 21, et qui est engagée dans un logement sphérique correspondant ménagé dans un bossage prévu sur la face arrière de l'organe de support 3 ainsi qu'il est décrit et représenté au brevet principal. In Figure 1, there is shown one of the tangent wheels or pinion 6 which has a central boss 15 provided with a threaded hole 16, in which is engaged a threaded part 17 of a tubular part 18 of a member control whose bottom 19 carries a ball joint 20 provided with pins 21, and which is engaged in a corresponding spherical housing formed in a boss provided on the rear face of the support member 3 as described and shown in the main patent .
La partie tubulaire 18 des organes de commande est réalisée en un matériau déformable et présente une fente axiale 24 débouchant à l'une des extrémités de la partie tubulaire afin de conférer à ladite partie tubulaire une possibilité de déformation radiale permettant qu'un effort appliqué axialement à l'un des organes de commande entraîne un dégagement du filetage 17 de la partie taraudée du trou 16. The tubular part 18 of the control members is made of a deformable material and has an axial slot 24 opening at one end of the tubular part in order to give said tubular part a possibility of radial deformation allowing an effort applied axially to one of the control members causes the thread 17 to be released from the threaded part of the hole 16.
Conformément à la présente addition, la roue tangente, ou pignon 6, est prolongée du cbté opposé au bossage 15 par une tige 33 portant un organe sphérique ou rotule 34 qui est montée librement dans un palier sphérique 35 de forme correspondante ménagé dans un bossage 36 prévu dans le fond du boîtier 1. According to the present addition, the tangent wheel, or pinion 6, is extended from the side opposite to the boss 15 by a rod 33 carrying a spherical member or ball joint 34 which is freely mounted in a spherical bearing 35 of corresponding shape formed in a boss 36 provided in the bottom of the housing 1.
Le palier sphérique 35 est délimité par une cheminée 38 en matière déformable et le fond 39 du bossage 36, ladite cheminée présentant une levre 37 constituant le bord-de l'ouverture de la cheminée 38 par laquelle est engagé l'organe sphérique ou rotule 34. The spherical bearing 35 is delimited by a chimney 38 made of deformable material and the bottom 39 of the boss 36, said chimney having a lip 37 constituting the edge of the opening of the chimney 38 through which the spherical member or ball joint 34 is engaged. .
Pour procéder au montage de la roue tangente ou pignon 6, il suffit d'engager à force l'organe sphérique 34 dans le palier 35 en déformant la lèvre 37 qui, après engagement de l'organe sphérique 34, vient recouvrir élastiquement celui-ci et le maintenir en place sans jeu dans son logement. De cette manière, l'axe de l'organe de commande 18 est toujours dans l'alignement de la roue tangente ou pignon 6, quelle que soit la position du miroir. To mount the tangent wheel or pinion 6, it suffices to forcely engage the spherical member 34 in the bearing 35 by deforming the lip 37 which, after engagement of the spherical member 34, comes to resiliently cover the latter and keep it in place without play in its housing. In this way, the axis of the control member 18 is always in alignment with the tangent wheel or pinion 6, whatever the position of the mirror.
Pour obtenir un rattrapage de jeu sur la rotule 34, il est possible de munir la jupe 38 de fentes longitudinales, telles que 40 (figure 2). To obtain a backlash on the ball 34, it is possible to provide the skirt 38 with longitudinal slots, such as 40 (Figure 2).
Bien entendu, l'invention n'est pas limitative et l'homme de l'art pourra y apporter des modifications sans sortir pour cela du domaine de l'invention. Of course, the invention is not limiting and those skilled in the art may make modifications to it without departing from the scope of the invention.
Claims (4)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8307688A FR2545768B2 (en) | 1982-05-13 | 1983-05-09 | TORQUE LIMITING DEVICE FOR MECHANISM FOR CONTROLLING A MIRROR |
BR8305193A BR8305193A (en) | 1983-05-09 | 1983-09-22 | MECHANISM WITH TORQUE LIMITER FOR THE CONTROL OF A REAR-VIEW MIRROR FOR VEHICLES |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8208347A FR2526737B1 (en) | 1982-05-13 | 1982-05-13 | TORQUE LIMITING DEVICE FOR MECHANISM FOR CONTROLLING A MIRROR |
FR8307688A FR2545768B2 (en) | 1982-05-13 | 1983-05-09 | TORQUE LIMITING DEVICE FOR MECHANISM FOR CONTROLLING A MIRROR |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2545768A2 true FR2545768A2 (en) | 1984-11-16 |
FR2545768B2 FR2545768B2 (en) | 1987-12-04 |
Family
ID=26222903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8307688A Expired FR2545768B2 (en) | 1982-05-13 | 1983-05-09 | TORQUE LIMITING DEVICE FOR MECHANISM FOR CONTROLLING A MIRROR |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2545768B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0272047A2 (en) * | 1986-12-12 | 1988-06-22 | Britax Rainsfords Pty. Ltd. | A pivotable screw jack drive |
FR2616115A1 (en) * | 1987-06-05 | 1988-12-09 | Manzoni Bouchot Sa | DEVICE FOR THE VIBRATION-FREE TRANSMISSION OF MOVEMENTS FROM AN ELECTRICAL CONTROL TO A MIRROR HOLDER PLATE OF A MIRROR |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2509188A1 (en) * | 1975-03-03 | 1976-09-09 | Maerklin & Cie Gmbh Geb | Electro servo operated driving mirror - has plastic, axially slotted drive nut as torque limited drive |
DE2515763A1 (en) * | 1975-04-10 | 1976-10-21 | Maerklin & Cie Gmbh Geb | DEVICE FOR OPERATING A CAR MIRROR OR THE LIKE |
FR2437322A1 (en) * | 1978-09-27 | 1980-04-25 | Murakami Kaimeido Kk | ELECTRICAL DEVICE FOR ADJUSTING THE ANGLE OF A MOTOR VEHICLE MIRROR |
US4202603A (en) * | 1977-05-31 | 1980-05-13 | Koito Manufacturing Company Limited | Remotely controlled mirrors |
GB2080221A (en) * | 1980-07-18 | 1982-02-03 | Manzoni Stephane | Control device for vehicle rearview mirror |
EP0059073A1 (en) * | 1981-02-24 | 1982-09-01 | Murakami Kaimeido Co., Ltd | Electrically-operated mirror angle adjusting device |
US4362362A (en) * | 1979-10-17 | 1982-12-07 | Kabushiki Kaisha Tokai Rika Denki Seisakusho | Electric remote control rearview mirror |
-
1983
- 1983-05-09 FR FR8307688A patent/FR2545768B2/en not_active Expired
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2509188A1 (en) * | 1975-03-03 | 1976-09-09 | Maerklin & Cie Gmbh Geb | Electro servo operated driving mirror - has plastic, axially slotted drive nut as torque limited drive |
DE2515763A1 (en) * | 1975-04-10 | 1976-10-21 | Maerklin & Cie Gmbh Geb | DEVICE FOR OPERATING A CAR MIRROR OR THE LIKE |
US4202603A (en) * | 1977-05-31 | 1980-05-13 | Koito Manufacturing Company Limited | Remotely controlled mirrors |
FR2437322A1 (en) * | 1978-09-27 | 1980-04-25 | Murakami Kaimeido Kk | ELECTRICAL DEVICE FOR ADJUSTING THE ANGLE OF A MOTOR VEHICLE MIRROR |
US4362362A (en) * | 1979-10-17 | 1982-12-07 | Kabushiki Kaisha Tokai Rika Denki Seisakusho | Electric remote control rearview mirror |
GB2080221A (en) * | 1980-07-18 | 1982-02-03 | Manzoni Stephane | Control device for vehicle rearview mirror |
EP0059073A1 (en) * | 1981-02-24 | 1982-09-01 | Murakami Kaimeido Co., Ltd | Electrically-operated mirror angle adjusting device |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0272047A2 (en) * | 1986-12-12 | 1988-06-22 | Britax Rainsfords Pty. Ltd. | A pivotable screw jack drive |
EP0272047A3 (en) * | 1986-12-12 | 1988-07-20 | Britax Rainsfords Pty. Ltd. | A pivotable screw jack drive |
FR2616115A1 (en) * | 1987-06-05 | 1988-12-09 | Manzoni Bouchot Sa | DEVICE FOR THE VIBRATION-FREE TRANSMISSION OF MOVEMENTS FROM AN ELECTRICAL CONTROL TO A MIRROR HOLDER PLATE OF A MIRROR |
EP0296909A1 (en) * | 1987-06-05 | 1988-12-28 | Manzoni-Bouchot Société anonyme dite: | Device for transmission of movements of an electric control without vibration to a rear view mirror support |
Also Published As
Publication number | Publication date |
---|---|
FR2545768B2 (en) | 1987-12-04 |
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