WO2002073085A1 - Support device for liquid crystal flat screen - Google Patents

Support device for liquid crystal flat screen Download PDF

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Publication number
WO2002073085A1
WO2002073085A1 PCT/FR2002/000876 FR0200876W WO02073085A1 WO 2002073085 A1 WO2002073085 A1 WO 2002073085A1 FR 0200876 W FR0200876 W FR 0200876W WO 02073085 A1 WO02073085 A1 WO 02073085A1
Authority
WO
WIPO (PCT)
Prior art keywords
arm
stirrup
tube
screen
passage
Prior art date
Application number
PCT/FR2002/000876
Other languages
French (fr)
Inventor
Alain Rudolf
Original Assignee
Id - Industrie + Design
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Id - Industrie + Design filed Critical Id - Industrie + Design
Priority to US10/469,231 priority Critical patent/US20040079858A1/en
Priority to EP02722341A priority patent/EP1368592A1/en
Priority to JP2002572309A priority patent/JP2004522920A/en
Publication of WO2002073085A1 publication Critical patent/WO2002073085A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F16M11/12—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction
    • F16M11/14—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction with ball-joint
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/2007—Undercarriages with or without wheels comprising means allowing pivoting adjustment
    • F16M11/2014—Undercarriages with or without wheels comprising means allowing pivoting adjustment around a vertical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/2092—Undercarriages with or without wheels comprising means allowing depth adjustment, i.e. forward-backward translation of the head relatively to the undercarriage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M2200/00—Details of stands or supports
    • F16M2200/06—Arms
    • F16M2200/068—Arms being part of the undercarriage

Definitions

  • the invention relates to office equipment, in particular computer equipment.
  • It relates more particularly to a support device for a flat liquid crystal screen, in particular for a computer station.
  • Support devices for a liquid crystal flat screen comprise an arm suitable for being connected to a support structure, as well as an articulation mechanism interposed between the arm and the screen.
  • the arm is generally composed of several elements hinged together. This arm is often bulky and it requires the use of a resistant supporting structure which also generates bulk on the station where it is placed.
  • the arm is usually connected in a non-removable manner to the support structure, which requires mounting the flat screen, in situ, directly on the articulation mechanism carried by the arm. Given the particular constraints of each station, this assembly is carried out generally "blind", which poses many practical difficulties.
  • the gain in size obtained with such a flat screen is generally lost, at least in part, by the size of the support device itself.
  • the object of the invention is in particular to overcome the aforementioned drawbacks.
  • It aims in particular to provide a support device for a flat liquid crystal screen which is simple in structure and easy to install.
  • the invention proposes a support device of the type defined in the introduction, in which the carrying structure comprises a stirrup having two walls spaced horizontally and provided respectively with two aligned openings defining a given axis passage suitable for being crossed by the arm arranged in overhang.
  • the arm thus constitutes an adjustable bracket at the end of which the screen is mounted.
  • the arm comprises a tube with a circular cylindrical wall, while at least one of the openings comprises an N-shaped end to ensure the locking in translation and in rotation of the tube, by effect of corner.
  • the tube can be placed in the bracket, in a given axial and angular position, and be maintained in this position by a simple locking effect due to the particular shape of at least one of the aligned openings.
  • the arm being detachably connected to the stirrup, this makes it possible to first fix the arm to the screen by means of the articulation mechanism, then to introduce the arm into the passage defined by the 'stirrup.
  • the mounting of the flat screen is facilitated.
  • the device of the invention allows permanent vision of the fixing point during mounting.
  • the two openings of the stirrup each have a V-shaped end, and these two V-shaped ends are arranged head to tail, one being directed upwards and the other downwards.
  • each of the V-shaped ends is delimited by two straight edges forming between them a chosen angle and connecting with an edge in an arc having a diameter slightly greater than the diameter of the tube.
  • the angle chosen above is advantageously between 50 'and 70', and preferably equal to 60 ' .
  • the two walls of the stirrup are preferably part respectively of two shells assembled together.
  • the stirrup comprises a vertical cylindrical passage having an axis substantially orthogonal to the axis of the horizontal passage, said vertical passage being intended to be crossed by a vertical cylindrical mast forming part of the carrying structure , so as to allow the stirrup to be immobilized in an axial and angular position defined relative to the mast, by jamming effect in overhang.
  • Each of the aforementioned shells preferably comprises an upper folded edge provided with an upper notch in an arc of a circle suitable for coming opposite an upper notch homologous with the other shell, as well as a lower folded edge provided with a lower notch in a circular arc suitable for coming opposite a lower notch homologous with the other shell.
  • the stirrup further comprises a screw locking member for ensuring the locking of the stirrup in this defined axial and angular position.
  • the arm is a telescopic tube which comprises a first cylindrical part suitable for sliding in the horizontal passage of the stirrup and a second cylindrical part suitable for sliding in the first part and supporting the ball joint.
  • the first part and the second part of the tube are each of circular cylindrical shape and comprise means for mutual locking in rotation.
  • FIG. 1 is a perspective view of a support device for a flat liquid crystal screen 1 according to the invention
  • FIG. 2 is a sectional view, taken along the axis of the tube-shaped arm, of the device of Figure 1;
  • FIG. 3 is a front view of the stirrup forming part of the supporting structure
  • FIG. 4 is a sectional view of the device, the tube being shown in the telescoped position;
  • FIGS 5 to 7 are partial sectional views, similar to Figure 2, showing three positions different from the patella;
  • FIG. 8 is a front view of a shell forming part of the stirrup of the device of the invention.
  • Figure 9 is a top view corresponding to Figure 8.
  • FIG. 10 is an axial sectional view of a ball joint in another embodiment of the invention.
  • FIG. 1 represents a device 10 intended to support a flat screen 12, of the liquid crystal type, such as those used, for example, in computer stations.
  • the device 10 comprises an arm 14, forming a bracket, disposed in a substantially horizontal position while being supported by a support structure 16.
  • a hinge mechanism 18 is interposed between the arm 14 and the screen 12.
  • the supporting structure 16 comprises a stirrup 20, also called a shoe, which can slide vertically (double arrow Fl) along a vertical mast 22 produced here in the form of a tube with circular cylindrical wall.
  • the mast 22 comprises a base 24 suitable for being fixed, preferably in an adjustable manner, on a station, for example a computer desk.
  • the base 24 is adjustable in position along a horizontal rail 26 (shown schematically) that includes said computer station.
  • the arm 14 is produced here in the form of a telescopic tube which comprises a first tubular part 28, in the example of circular cylindrical shape, and a second tubular part 30, also of circular cylindrical shape, capable of sliding at the inside of the tubular part 28.
  • the tubular part 28 is able to slide axially and to rotate freely in a horizontal passage 32 of axis XX that defines the bracket 20.
  • the tubular part 28 can be adjusted in a given axial and angular position relative to the stirrup 20. This is also adjustable in a given angular position relative to the mast 22, as shown by the arrow F2.
  • tubular part 30 can be adjusted axially with respect to the part 28, which makes it possible to modify the distance between the screen 12 and the bracket, and this with a large amplitude taking into account the telescopic nature of the arm 14.
  • the tubular parts 28 and 30 comprise means for mutual locking in rotation, and this to prevent the tubular part 30 from rotating relative to the tubular part 28 under the effect of a torque produced by the screen 12 when the latter is in an inclined cantilever position.
  • the articulation mechanism 18 comprises a ball joint 36 which has a surface 38 of generally hemispherical shape and of center C (Figure 4).
  • the ball 36 is extended by four radial legs 40 which are best seen in Figure 1. These four legs are arranged at 90 ° from each other and they each have two holes 42 for fixing the ball 36 on a rear face 44 of the screen. The latter is fitted with four appropriate holes (not shown) according to the VESA standard.
  • the existence of two holes 42 on each of the legs 40 makes it possible to adapt the ball joint to screens of different sizes.
  • the ball 36 itself is received in an internal housing 48 defined by the cage 46.
  • the internal surface of the cage does not constitute a surface homologous to the hemispherical surface 38.
  • the cage comes into contact with the hemispherical surface 38 only by an internal annular border 50 which thus forms an annular and narrow contact surface.
  • the cage 46 is extended by a sleeve 52 which defines an axial cylindrical passage 54.
  • the tubular part 30 of the arm 14 comprises a first end 56 which fits around the sleeve 52 and a second end 58 which internally receives a support 60, the structure of which will be described later.
  • the ball joint 18 and the cage 46 are each formed from a material with high mechanical resistance and a high coefficient of friction. As such, it is advantageous that the ball joint and the cage are each formed of a suitable plastic material, and in particular of the polycarbonate type. The ball 38 and the cage 46 can thus be produced easily by molding of this particular plastic material.
  • the device further comprises traction means 62 interposed between the cage and the ball to exert an elastic return force, of selected value, which urges the ball 38 to bear against the annular edge 50 of the cage.
  • traction means 62 interposed between the cage and the ball to exert an elastic return force, of selected value, which urges the ball 38 to bear against the annular edge 50 of the cage.
  • the traction means 62 comprise a tie rod 64 which, in the example, is a flexible cable, namely a multi-strand metal cable.
  • This tie rod 64 passes through the ball and the cage and it comprises a first end stop 66, here of generally circular cylindrical shape, which bears substantially at the center C of the ball.
  • the ball 38 includes a cylindrical housing 68 used for receiving the stop 66 and opening onto a rear face 70 of the ball.
  • This housing 68 communicates with a passage 74 of frustoconical shape which is used for the passage of the tie rod and which opens onto the hemispherical surface 38 of the ball joint.
  • This passage 74 has a generally conical shape and it has a narrow opening 76 which communicates with the abutment housing 68 and a wide opening 78, of circular shape, which opens onto the hemispherical surface of the ball joint.
  • the tie rod 64 has a second end stop 80 which is received in the support 60, outside the cage. To this end, the end of the tie rod is produced in the form of a threaded part provided with an adjustment nut 42 and traversed by a helical spring 84, which bears against a support ring 86 forming part of the support 60.
  • this support 60 comprises a sleeve 88 terminated by a flange 90 and the bottom of which is constituted by the abovementioned support ring 86.
  • the spring 84 is arranged between two washers: a washer 92 situated against the nut 82 and a washer 94 situated against the support ring 86.
  • tubular part 28 of the arm is terminated, on one side, by a ring 95 which slides inside the tubular part 30 and, on the opposite side, by a cap 96 of conical shape.
  • This cap hides the access to the adjusting nut and further constitutes a stop preventing the arm 14 from escaping from the stirrup 20.
  • the ball 36 (therefore the screen 12) can take an infinite number of orientations.
  • the tensile force exerted on the ball joint applies substantially to the center of the latter and in the axis of the arm.
  • the ball joint Given the frustoconical shape of the tie rod passage 74, the ball joint can have a large range of motion. This allows an infinite number of positions or adjustment orientations, in combination with the fact that the arm 14 is itself telescopic and that it is carried by a stirrup adjustable in height and in orientation relative to the mast 22.
  • the bracket 20 comprises two generally similar parts or shells 100 and 102, arranged on either side of the mast 22 and assembled together, the part 100 being located on the side of the screen 12 and the part 102 being on the opposite side.
  • the shells 100 and 102 have respective walls 104 and 106 spaced apart horizontally and provided respectively with two aligned openings 108 and 110 which define the above-mentioned horizontal passage 32 of axis XX.
  • the two openings 108 and 110 each have a V-shaped end, namely 112 and 114 respectively, these two ends being arranged head to tail.
  • the end 112 of the opening 108 is directed downward, while the end 114 of the opening
  • each of these ends is delimited by two straight edges 116 forming between them a chosen angle A, typically between 50 ° and 70 ° , in the example of 60 °
  • the straight edges 116 of the opening 108 do not form a true V, insofar as they are connected together by a transverse edge 120.
  • tubular part 28 of the arm can slide axially in the passage 32 and be immobilized in a given axial position and angular position.
  • tubular part 30 can be moved, simply in axial sliding, relative to the tubular part 28, to provide additional adjustment of the screen, as already indicated.
  • Each of the shells for example the shell 100, comprises an upper folded edge 122 provided with an upper notch 124 in an arc of a circle, adapted to come opposite an upper notch homologous with the other shell, as well as an edge folded lower 126 provided with a lower notch 128 in an arc, suitable for coming opposite a lower notch homologous with the other shell.
  • the two upper notches facing each other and the two lower notches facing each other help to define a vertical cylindrical passage 130 which admits a substantially orthogonal YY axis to the axis XX of the horizontal passage 32 ( Figure 1).
  • This vertical passage is designed to be crossed by the vertical cylindrical mast 22 described above.
  • the shells 100 and 102 are generally similar and are advantageously produced by molding a metallic material.
  • the stirrup 20 further comprises a locking member 136 of the screw type for locking the stirrup in a defined axial and angular position.
  • This member 136 comprises a button 138 extended by a threaded rod 140 which passes through an opening 142 of the shell 100 and which cooperates with a threaded passage opposite the shell 102. It should be noted that, due to the '' cantilever force exerted by the weight of the arm and the screen, the stirrup 100 can come to a stop in an axial and angular position chosen relative to the mast 22, by simple wedging effect.
  • the locking member 136 simply constitutes a security device for locking the stirrup in a chosen position relative to the mast.
  • the ball 38 of Figure 10 differs from that described above in that it is hollowed out instead of being massive. It in fact comprises a recess 144 which opens onto the rear face 70. This makes it possible to lighten the ball joint and to facilitate its production by molding, without compromising its mechanical strength taking into account the material used.
  • This provides a device of simple structure, compact, to ensure an infinite number of possible settings for a flat screen liquid crystal.
  • stirrup can be used with different types of arms and articulation mechanisms.

Abstract

A device for supporting a liquid crystal flat screen (12), comprising an arm (14) which can be joined to a load bearing structure (16), and an articulating mechanism (18) disposed between the arm (14) and the screen (12). The load bearing mechanism comprises a stirrup element (20) having two horizontally spaced walls (104, 106) respectively provided with two aligned openings (108, 110) defining a horizontal passage (32) of a given axis (XX) through which the arm (14) can pass through disposed in such a way that it overhangs. In a preferred embodiment, the arm comprises a circular cylindrical walled tube (28), and the end of at least one of the openings (108, 110) is V-shaped to ensure locking during translation and rotation of the tube as a result of the corner effect. The invention can be used in computer workstations.

Description

Dispositif pour supporter un écran plat à cristaux liquidesDevice for supporting a flat liquid crystal screen
L'invention se rapporte aux équipements de bureau, notamment aux équipements informatiques .The invention relates to office equipment, in particular computer equipment.
Elle concerne plus particulièrement un dispositif de support pour un écran plat à cristaux liquides, en particulier pour poste informatique.It relates more particularly to a support device for a flat liquid crystal screen, in particular for a computer station.
On sait que les écrans plats à cristaux liquides sont de plus en plus utilisés dans les postes informatiques, en particulier ceux destinés aux établissements bancaires, salles de marchés, et analogues.It is known that flat liquid crystal screens are used more and more in computer stations, in particular those intended for banking establishments, trading rooms, and the like.
En effet, en raison de leur faible encombrement et du confort visuel qu'ils procurent à l'utilisateur, ces écrans plats remplacent avantageusement les écrans cathodiques tradition- nels.Indeed, because of their small size and the visual comfort they provide to the user, these flat screens advantageously replace the traditional cathode screens.
On connaît déjà des dispositifs de support pour écran plat à cristaux liquides, qui comprennent un bras propre à être relié à une structure porteuse, ainsi qu'un mécanisme d'articulation interposé entre le bras et l'écran.Support devices for a liquid crystal flat screen are already known, which comprise an arm suitable for being connected to a support structure, as well as an articulation mechanism interposed between the arm and the screen.
Dans les dispositifs connus de ce genre, le bras est généralement composé de plusieurs éléments articulés entre eux. Ce bras est souvent encombrant et il nécessite l'emploi d'une structure porteuse résistante qui génère aussi de l'encombrement sur le poste où elle est placée.In known devices of this kind, the arm is generally composed of several elements hinged together. This arm is often bulky and it requires the use of a resistant supporting structure which also generates bulk on the station where it is placed.
De plus, le bras est habituellement relié de façon non démontable à la structure porteuse, ce qui oblige de monter l'écran plat, in situ, directement sur le mécanisme d'articulation que porte le bras. Compte tenu des contraintes particulières de chaque poste, ce montage s'effectue généralement "en aveugle", ce qui pose de nombreuse difficultés pratiques .In addition, the arm is usually connected in a non-removable manner to the support structure, which requires mounting the flat screen, in situ, directly on the articulation mechanism carried by the arm. Given the particular constraints of each station, this assembly is carried out generally "blind", which poses many practical difficulties.
Par ailleurs, ces dispositifs de support soit sont difficiles à régler soit perdent facilement leur position de réglage.Furthermore, these support devices are either difficult to adjust or easily lose their adjustment position.
Enfin, ces dispositifs connus sont généralement mal adaptés aux postes doubles, comme on en trouve souvent dans les établissements bancaires, salles de marchés, et analogues, dans lesquels on trouve deux pupitres disposés en vis-à-vis et qui sont destinés chacun à recevoir leurs équipements propres.Finally, these known devices are generally ill-suited to double stations, as is often found in banking establishments, trading rooms, and the like, in which there are two desks arranged opposite and which are each intended to receive their own equipment.
Dans tous les cas, ces dispositifs de support connus sont encombrants, et donc peu compatibles avec les écrans plats à cristaux liquides.In all cases, these known support devices are bulky, and therefore not very compatible with flat liquid crystal screens.
En effet, le gain en encombrement obtenu avec un tel écran plat est généralement perdu, au moins en partie, par l'encombrement du dispositif de support en lui-même.Indeed, the gain in size obtained with such a flat screen is generally lost, at least in part, by the size of the support device itself.
L'invention a notamment pour but de surmonter les inconvénients précités.The object of the invention is in particular to overcome the aforementioned drawbacks.
Elle vise en particulier à procurer un dispositif de support pour un écran plat à cristaux liquides qui est de structure simple et facile à installer.It aims in particular to provide a support device for a flat liquid crystal screen which is simple in structure and easy to install.
Elle vise aussi à procurer un dispositif de support de ce genre qui génère un faible encombrement sur le poste sur lequel ce dispositif est installé.It also aims to provide a support device of this kind which generates a small footprint on the station on which this device is installed.
Elle vise encore à procurer un tel dispositif de support qui est compatible avec une large gamme d'écrans plats à cristaux liquides.It also aims to provide such a support device which is compatible with a wide range of flat liquid crystal screens.
C'est aussi un but de l'invention de procurer un tel dispositif de support qui autorise un réglage aisé de l'écran plat dans une multiplicité de positions possibles, et cela sans que l'écran plat ne puisse perdre ensuite sa position de réglage.It is also an object of the invention to provide such a device support which allows easy adjustment of the flat screen in a multiplicity of possible positions, and this without the flat screen can not then lose its adjustment position.
L'invention propose à cet effet un dispositif de support du type défini en introduction, dans lequel la structure porteuse comprend un étrier ayant deux parois espacées horizontalement et munies respectivement de deux ouvertures alignées définissant un passage d'axe donné propre à être traversé par le bras disposé en porte-à-faux.To this end, the invention proposes a support device of the type defined in the introduction, in which the carrying structure comprises a stirrup having two walls spaced horizontally and provided respectively with two aligned openings defining a given axis passage suitable for being crossed by the arm arranged in overhang.
Grâce au porte-à-faux de l'écran et du bras, il se produit un couple dans l'étrier qui fait que le bras se trouve coincé dans les deux ouvertures de l'étrier. Le bras constitue ainsi une potence réglable à l'extrémité de laquelle est monté l'écran.Thanks to the overhang of the screen and the arm, a torque is produced in the caliper which causes the arm to be trapped in the two openings of the caliper. The arm thus constitutes an adjustable bracket at the end of which the screen is mounted.
Dans une forme de réalisation préférée de l'invention, le bras comprend un tube à paroi cylindrique circulaire, tandis que l'une au moins des ouvertures comprend une extrémité en N pour assurer le blocage en translation et en rotation du tube, par effet de coin.In a preferred embodiment of the invention, the arm comprises a tube with a circular cylindrical wall, while at least one of the openings comprises an N-shaped end to ensure the locking in translation and in rotation of the tube, by effect of corner.
Ce coincement empêche le tube de tourner sur lui-même et le bloque en rotation. Ainsi, le tube peut être placé dans l' étrier, dans une position axiale et angulaire donnée, et être maintenu dans cette position par un simple effet de blocage dû à la forme particulière de l'une au moins des ouvertures alignées.This jamming prevents the tube from turning on itself and blocks it from rotating. Thus, the tube can be placed in the bracket, in a given axial and angular position, and be maintained in this position by a simple locking effect due to the particular shape of at least one of the aligned openings.
De plus, le bras étant relié de façon démontable à l' étrier, ceci permet de fixer d'abord le bras à l'écran par l'intermédiaire du mécanisme d'articulation, puis d'introduire le bras dans le passage défini par l'étrier.In addition, the arm being detachably connected to the stirrup, this makes it possible to first fix the arm to the screen by means of the articulation mechanism, then to introduce the arm into the passage defined by the 'stirrup.
II en résulte que le montage de l'écran plat est facilité. En effet, contrairement aux dispositifs connus où le point d'ancrage est situé directement au dos de l'écran et nécessite donc un montage en aveugle, le dispositif de l'invention permet une vision permanente du point de fixation durant le montage.As a result, the mounting of the flat screen is facilitated. In fact, unlike known devices where the point anchor is located directly on the back of the screen and therefore requires blind mounting, the device of the invention allows permanent vision of the fixing point during mounting.
De préférence, les deux ouvertures de l'etrier ont chacune une extrémité en V, et ces deux extrémités en V sont disposées tête-bêche, l'une étant dirigée vers le haut et l'autre vers le bas.Preferably, the two openings of the stirrup each have a V-shaped end, and these two V-shaped ends are arranged head to tail, one being directed upwards and the other downwards.
Dans une forme de réalisation préférée, chacune des extrémités en V est délimitée par deux bords droits formant entre eux un angle choisi et se raccordant avec un bord en arc de cercle ayant un diamètre légèrement supérieur au diamètre du tube.In a preferred embodiment, each of the V-shaped ends is delimited by two straight edges forming between them a chosen angle and connecting with an edge in an arc having a diameter slightly greater than the diameter of the tube.
L'angle choisi précité est avantageusement compris entre 50' et 70', et de préférence égal à 60'.The angle chosen above is advantageously between 50 'and 70', and preferably equal to 60 ' .
Les deux parois de l'etrier font, de préférence, partie respectivement de deux coquilles assemblées entre elles.The two walls of the stirrup are preferably part respectively of two shells assembled together.
Selon encore une autre caractéristique de l'invention, l'etrier comporte un passage cylindrique vertical ayant un axe sensiblement orthogonal à l'axe du passage horizontal, ledit passage vertical étant prévu pour être traversé par un mât cylindrique vertical faisant partie de la structure porteuse, de manière à permettre l'immobilisation de l'etrier en une position axiale et angulaire définie par rapport au mât, par effet de coincement en porte-à-faux.According to yet another characteristic of the invention, the stirrup comprises a vertical cylindrical passage having an axis substantially orthogonal to the axis of the horizontal passage, said vertical passage being intended to be crossed by a vertical cylindrical mast forming part of the carrying structure , so as to allow the stirrup to be immobilized in an axial and angular position defined relative to the mast, by jamming effect in overhang.
De ce fait il est possible de déplacer facilement l'etrier le long du mât et de le placer à la hauteur et l'orientation désirées, l'etrier restant automatiquement en position par effet d'arc-boutement sur le mât. Un verrouillage définitif peut, le cas échéant, être réalisé pour des raisons de sécurité, comme on le verra plus loin. Chacune des coquilles précitées comprend, de préférence, un bord replié supérieur muni d'une encoche supérieure en arc de cercle propre à venir en regard d'une encoche supérieure homologue de l'autre coquille, ainsi qu'un bord replié inférieur muni d'une encoche inférieure en arc de cercle propre à venir en regard d'une encoche inférieure homologue de l'autre coquille.Therefore it is possible to easily move the stirrup along the mast and place it at the desired height and orientation, the stirrup automatically remaining in position by bracing effect on the mast. A permanent locking can, if necessary, be carried out for security reasons, as will be seen below. Each of the aforementioned shells preferably comprises an upper folded edge provided with an upper notch in an arc of a circle suitable for coming opposite an upper notch homologous with the other shell, as well as a lower folded edge provided with a lower notch in a circular arc suitable for coming opposite a lower notch homologous with the other shell.
De préférence, l'etrier comprend en outre un organe de blocage à vis pour assurer le verrouillage de l'etrier dans cette position axiale et angulaire définie.Preferably, the stirrup further comprises a screw locking member for ensuring the locking of the stirrup in this defined axial and angular position.
Selon encore une autre caractéristique de l'invention, le bras est un tube télescopique qui comprend une première partie cylindrique propre à coulisser dans le passage horizontal de l'etrier et une deuxième partie cylindrique propre à coulisser dans la première partie et supportant la rotule.According to yet another characteristic of the invention, the arm is a telescopic tube which comprises a first cylindrical part suitable for sliding in the horizontal passage of the stirrup and a second cylindrical part suitable for sliding in the first part and supporting the ball joint.
De préférence, la première partie et la deuxième partie du tube sont chacune de forme cylindrique circulaire et comprennent des moyens de blocage mutuel en rotation.Preferably, the first part and the second part of the tube are each of circular cylindrical shape and comprise means for mutual locking in rotation.
Dans la description qui suit, faite seulement à titre d'exemple, on se réfère aux dessins annexés, sur lesquels :In the description which follows, given solely by way of example, reference is made to the appended drawings, in which:
- la Figure 1 est une vue en perspective d'un dispositif de support pour un écran plat à cristaux liquides selon 1 ' invention ;- Figure 1 is a perspective view of a support device for a flat liquid crystal screen 1 according to the invention;
- la Figure 2 est une vue en coupe, prise dans l'axe du bras en forme de tube, du dispositif de la Figure 1 ;- Figure 2 is a sectional view, taken along the axis of the tube-shaped arm, of the device of Figure 1;
- la Figure 3 est une vue de face de l'etrier faisant partie de la structure porteuse ;- Figure 3 is a front view of the stirrup forming part of the supporting structure;
- la Figure 4 est une vue en coupe du dispositif, le tube étant représenté en position télescopée ; - les Figures 5 à 7 sont des vues en coupe partielle, analogues à la Figure 2, montrant trois positions différentes de la rotule ;- Figure 4 is a sectional view of the device, the tube being shown in the telescoped position; - Figures 5 to 7 are partial sectional views, similar to Figure 2, showing three positions different from the patella;
- la Figure 8 est une vue de face d'une coquille faisant partie de l'etrier du dispositif de l'invention ;- Figure 8 is a front view of a shell forming part of the stirrup of the device of the invention;
- la Figure 9 est une vue de dessus correspondant à la Figure 8 ; et- Figure 9 is a top view corresponding to Figure 8; and
- la Figure 10 est une vue en coupe axiale d'une rotule dans une autre forme de réalisation de l'invention.- Figure 10 is an axial sectional view of a ball joint in another embodiment of the invention.
On se réfère d'abord à la Figure 1 qui représente un dispositif 10 destiné à supporter un écran plat 12, du type à cristaux liquides, tel que ceux utilisés, par exemple, dans les postes informatiques .Reference is first made to FIG. 1 which represents a device 10 intended to support a flat screen 12, of the liquid crystal type, such as those used, for example, in computer stations.
Le dispositif 10 comprend un bras 14, formant potence, disposé dans une position sensiblement horizontale en étant supporté par une structure porteuse 16. Un mécanisme d'articulation 18 est interposé entre le bras 14 et l'écran 12.The device 10 comprises an arm 14, forming a bracket, disposed in a substantially horizontal position while being supported by a support structure 16. A hinge mechanism 18 is interposed between the arm 14 and the screen 12.
La structure porteuse 16 comprend un étrier 20, encore appelé sabot, qui peut coulisser verticalement (double flèche Fl) le long d'un mât vertical 22 réalisé ici sous la forme d'un tube à paroi cylindrique circulaire. Le mât 22 comprend une embase 24 propre à être fixée, de préférence de manière réglable, sur un poste, par exemple un pupitre informatique.The supporting structure 16 comprises a stirrup 20, also called a shoe, which can slide vertically (double arrow Fl) along a vertical mast 22 produced here in the form of a tube with circular cylindrical wall. The mast 22 comprises a base 24 suitable for being fixed, preferably in an adjustable manner, on a station, for example a computer desk.
Dans l'exemple, l'embase 24 est réglable en position le long d'un rail horizontal 26 (représenté schématiquement) que comporte ledit poste informatique.In the example, the base 24 is adjustable in position along a horizontal rail 26 (shown schematically) that includes said computer station.
Le bras 14 est réalisé ici sous la forme d'un tube telescopique qui comprend une première partie tubulaire 28, dans l'exemple de forme cylindrique circulaire, et une deuxième partie tubulaire 30, également de forme cylindrique circulaire, susceptible de coulisser à l'intérieur de la partie tubulaire 28. La partie tubulaire 28 est propre à coulisser axialement et à tourner librement dans un passage horizontal 32 d'axe XX que définit l'etrier 20. Ainsi, la partie tubulaire 28 peut être réglée dans une position axiale et angulaire donnée par rapport à l'etrier 20. Celui-ci est en outre réglable dans une position angulaire donnée par rapport au mât 22, comme représenté par la flèche F2.The arm 14 is produced here in the form of a telescopic tube which comprises a first tubular part 28, in the example of circular cylindrical shape, and a second tubular part 30, also of circular cylindrical shape, capable of sliding at the inside of the tubular part 28. The tubular part 28 is able to slide axially and to rotate freely in a horizontal passage 32 of axis XX that defines the bracket 20. Thus, the tubular part 28 can be adjusted in a given axial and angular position relative to the stirrup 20. This is also adjustable in a given angular position relative to the mast 22, as shown by the arrow F2.
De surcroît, la partie tubulaire 30 peut être réglée axialement par rapport à la partie 28, ce qui permet de modifier la distance entre l'écran 12 et l'etrier, et cela avec une amplitude importante compte tenu du caractère telescopique du bras 14.In addition, the tubular part 30 can be adjusted axially with respect to the part 28, which makes it possible to modify the distance between the screen 12 and the bracket, and this with a large amplitude taking into account the telescopic nature of the arm 14.
De préférence, les parties tubulaires 28 et 30 comprennent des moyens de blocage mutuel en rotation, et cela pour éviter que la partie tubulaire 30 ne puisse tourner par rapport à la partie tubulaire 28 sous l'effet d'un couple de rotation produit par l'écran 12 lorsque celui-ci se trouve dans une position inclinée en porte-à-faux.Preferably, the tubular parts 28 and 30 comprise means for mutual locking in rotation, and this to prevent the tubular part 30 from rotating relative to the tubular part 28 under the effect of a torque produced by the screen 12 when the latter is in an inclined cantilever position.
Ces moyens de blocage mutuel sont avantageusement des moyens du type à rainure, comme représenté schématiquement en 34 sur la Figure 1.These mutual locking means are advantageously means of the groove type, as shown diagrammatically at 34 in FIG. 1.
Le mécanisme d'articulation 18 sera décrit maintenant en référence particulière aux Figures 2 et 4. Sur la Figure 2, le bras 14 (tube telescopique) est représenté en position déployée, tandis que, sur la Figure 4, ce bras est représenté en position rétractée.The articulation mechanism 18 will now be described with particular reference to Figures 2 and 4. In Figure 2, the arm 14 (telescopic tube) is shown in the deployed position, while in Figure 4, this arm is shown in the position retracted.
Le mécanisme d'articulation 18 comprend une rotule 36 qui présente une surface 38 de forme générale hémisphérique et de centre C (Figure 4). La rotule 36 se prolonge par quatre pattes radiales 40 que l'on voit mieux sur la Figure 1. Ces quatre pattes sont disposées à 90° les unes des autres et elles comportent chacune deux perçages 42 pour permettre de fixer la rotule 36 sur une face postérieure 44 de l'écran. Cette dernière est munie de quatre perçages appropriés (non représentés) selon la normalisation VESA. L'existence de deux perçages 42 sur chacune des pattes 40 permet d'adapter la rotule à des écrans de tailles différentes.The articulation mechanism 18 comprises a ball joint 36 which has a surface 38 of generally hemispherical shape and of center C (Figure 4). The ball 36 is extended by four radial legs 40 which are best seen in Figure 1. These four legs are arranged at 90 ° from each other and they each have two holes 42 for fixing the ball 36 on a rear face 44 of the screen. The latter is fitted with four appropriate holes (not shown) according to the VESA standard. The existence of two holes 42 on each of the legs 40 makes it possible to adapt the ball joint to screens of different sizes.
La rotule 36 proprement dite est reçue dans un logement interne 48 défini par la cage 46. Toutefois, la surface intérieure de la cage ne constitue pas une surface homologue de la surface hémisphérique 38. Au contraire, la cage vient au contact de la surface hémisphérique 38 seulement par une bordure annulaire interne 50 qui forme ainsi une surface de contact annulaire et étroite. La cage 46 se prolonge par un manchon 52 qui définit un passage cylindrique axial 54.The ball 36 itself is received in an internal housing 48 defined by the cage 46. However, the internal surface of the cage does not constitute a surface homologous to the hemispherical surface 38. On the contrary, the cage comes into contact with the hemispherical surface 38 only by an internal annular border 50 which thus forms an annular and narrow contact surface. The cage 46 is extended by a sleeve 52 which defines an axial cylindrical passage 54.
La partie tubulaire 30 du bras 14 comprend une première extrémité 56 qui vient s'adapter autour du manchon 52 et une seconde extrémité 58 qui reçoit intérieurement un appui 60, dont la structure sera décrite plus loin.The tubular part 30 of the arm 14 comprises a first end 56 which fits around the sleeve 52 and a second end 58 which internally receives a support 60, the structure of which will be described later.
La rotule 18 et la cage 46 sont formées chacune en une matière à forte résistance mécanique et à fort coefficient de frottement. A ce titre, il est avantageux que la rotule et la cage soient formées chacune en une matière plastique appropriée, et en particulier du type polycarbonate. La rotule 38 et la cage 46 peuvent être ainsi réalisées facilement par moulage de cette matière plastique particulière.The ball joint 18 and the cage 46 are each formed from a material with high mechanical resistance and a high coefficient of friction. As such, it is advantageous that the ball joint and the cage are each formed of a suitable plastic material, and in particular of the polycarbonate type. The ball 38 and the cage 46 can thus be produced easily by molding of this particular plastic material.
Conformément à l'invention, le dispositif comprend, en outre, des moyens de traction 62 interposés entre la cage et la rotule pour exercer une force élastique de rappel, de valeur choisie, qui sollicite la rotule 38 en appui contre la bordure annulaire 50 de la cage. De la sorte, et compte tenu du fort coefficient de frottement de la matière utilisée, la rotule et la cage sont sollicitées élastiquement l'une contre l'autre, ce qui permet une immobilisation de la rotule, en une orientation choisie, par rapport à la cage.According to the invention, the device further comprises traction means 62 interposed between the cage and the ball to exert an elastic return force, of selected value, which urges the ball 38 to bear against the annular edge 50 of the cage. In this way, and taking into account the high coefficient of friction of the material used, the ball joint and the cage are elastically biased one against the other, which allows immobilization of the patella, in a chosen orientation, relative to the cage.
Dans la forme de réalisation représentée, les moyens de traction 62 comprennent un tirant 64 qui, dans l'exemple, est un câble souple, à savoir un câble métallique multibrin. Ce tirant 64 traverse la rotule et la cage et il comporte une première butée d'extrémité 66, ici de forme générale cylindrique circulaire, qui prend appui sensiblement au centre C de la rotule.In the embodiment shown, the traction means 62 comprise a tie rod 64 which, in the example, is a flexible cable, namely a multi-strand metal cable. This tie rod 64 passes through the ball and the cage and it comprises a first end stop 66, here of generally circular cylindrical shape, which bears substantially at the center C of the ball.
A cet effet, la rotule 38 comporte un logement cylindrique 68 servant à la réception de la butée 66 et débouchant sur une face postérieure 70 de la rotule. Ce logement 68 communique avec un passage 74 de forme tronconique qui sert au passage du tirant et qui débouche sur la surface hémisphérique 38 de la rotule. Ce passage 74 présente une forme générale conique et il comporte une ouverture étroite 76 qui communique avec le logement de butée 68 et une ouverture large 78, de forme circulaire, qui débouche sur la surface hémisphérique de la rotule.To this end, the ball 38 includes a cylindrical housing 68 used for receiving the stop 66 and opening onto a rear face 70 of the ball. This housing 68 communicates with a passage 74 of frustoconical shape which is used for the passage of the tie rod and which opens onto the hemispherical surface 38 of the ball joint. This passage 74 has a generally conical shape and it has a narrow opening 76 which communicates with the abutment housing 68 and a wide opening 78, of circular shape, which opens onto the hemispherical surface of the ball joint.
Le tirant 64 comporte une seconde butée d'extrémité 80 qui est reçue dans l'appui 60, à l'extérieur de la cage. A cet effet, l'extrémité du tirant est réalisée sous la forme d'une partie filetée munie d'un écrou de réglage 42 et traversée par un ressort hélicoïdal 84, lequel prend appui contre un anneau d'appui 86 faisant partie de l'appui 60.The tie rod 64 has a second end stop 80 which is received in the support 60, outside the cage. To this end, the end of the tie rod is produced in the form of a threaded part provided with an adjustment nut 42 and traversed by a helical spring 84, which bears against a support ring 86 forming part of the support 60.
Plus particulièrement, cet appui 60 comprend un manchon 88 terminé par une collerette 90 et dont le fond est constitué par l'anneau d'appui 86 précité. Le ressort 84 est disposé entre deux rondelles : une rondelle 92 située contre 1 'écrou 82 et une rondelle 94 située contre l'anneau d'appui 86.More particularly, this support 60 comprises a sleeve 88 terminated by a flange 90 and the bottom of which is constituted by the abovementioned support ring 86. The spring 84 is arranged between two washers: a washer 92 situated against the nut 82 and a washer 94 situated against the support ring 86.
On comprendra que l ' on peut ainsi régler la force axiale F3 qui s'exerce sur la rotule et, par conséquent, la force latérale F4 qui s'exerce contre la bordure annulaire 50 (Figure 4). Ce réglage est obtenu par un choix judicieux de la raideur du ressort et par un réglage approprié de la position axiale de 1'écrou 82.It will be understood that it is thus possible to adjust the axial force F3 which is exerted on the patella and, consequently, the lateral force F4 which is exerted against the annular border 50 (Figure 4). This adjustment is obtained by a judicious choice of the stiffness of the spring and by an appropriate adjustment of the axial position of the nut 82.
La conjonction de ce réglage et du choix des matières constituant la rotule et la cage permet de réaliser un frottement important entre la rotule et la cage, ce qui permet d'immobiliser la rotule en une orientation choisie et de conserver cette orientation, en dépit du poids exercé par l'écran 12.The combination of this adjustment and the choice of materials constituting the ball joint and the cage makes it possible to produce significant friction between the ball joint and the cage, which makes it possible to immobilize the ball joint in a chosen orientation and to maintain this orientation, despite the weight exerted by the screen 12.
On remarquera que la partie tubulaire 28 du bras est terminée, d'un côté, par une bague 95 qui coulisse à l'intérieur de la partie tubulaire 30 et, du côté opposé, par un capuchon 96 de forme conique. Ce capuchon cache l'accès à l'écrou de réglage et constitue en outre une butée empêchant au bras 14 de s'échapper de l'etrier 20.It will be noted that the tubular part 28 of the arm is terminated, on one side, by a ring 95 which slides inside the tubular part 30 and, on the opposite side, by a cap 96 of conical shape. This cap hides the access to the adjusting nut and further constitutes a stop preventing the arm 14 from escaping from the stirrup 20.
Comme on peut le voir sur les Figures 5 à 7, la rotule 36 (donc l'écran 12) peut prendre une infinité d'orientations. Dans tous les cas, l'effort de traction exercé sur la rotule s'applique sensiblement au centre de cette dernière et dans l'axe du bras. Compte tenu de la forme tronconique du passage de tirant 74, la rotule peut avoir une amplitude de mouvement importante. Ceci permet une infinité de positions ou orientations de réglage, en combinaison du fait que le bras 14 est lui-même telescopique et qu'il est porté par un étrier réglable en hauteur et en orientation par rapport au mât 22.As can be seen in Figures 5 to 7, the ball 36 (therefore the screen 12) can take an infinite number of orientations. In all cases, the tensile force exerted on the ball joint applies substantially to the center of the latter and in the axis of the arm. Given the frustoconical shape of the tie rod passage 74, the ball joint can have a large range of motion. This allows an infinite number of positions or adjustment orientations, in combination with the fact that the arm 14 is itself telescopic and that it is carried by a stirrup adjustable in height and in orientation relative to the mast 22.
On décrira maintenant la structure de l'etrier 20 en référence particulière aux Figures 1 à 3 et 8 et 9.The structure of the stirrup 20 will now be described with particular reference to Figures 1 to 3 and 8 and 9.
L'etrier 20 comprend deux parties ou coquilles 100 et 102 généralement semblables, disposées de part et d'autre du mât 22 et assemblées entre elles, la partie 100 étant située du côté de l'écran 12 et la partie 102 du côté opposé.The bracket 20 comprises two generally similar parts or shells 100 and 102, arranged on either side of the mast 22 and assembled together, the part 100 being located on the side of the screen 12 and the part 102 being on the opposite side.
Les coquilles 100 et 102 ont des parois respectives 104 et 106 espacées horizontalement et munies respectivement de deux ouvertures alignées 108 et 110 qui définissent le passage horizontal 32 précité d'axe XX.The shells 100 and 102 have respective walls 104 and 106 spaced apart horizontally and provided respectively with two aligned openings 108 and 110 which define the above-mentioned horizontal passage 32 of axis XX.
Les deux ouvertures 108 et 110 ont chacune une extrémité en V, à savoir respectivement 112 et 114, ces deux extrémités étant disposées tête-bêche. L'extrémité 112 de l'ouverture 108 est dirigée vers le bas, tandis que l'extrémité 114 de l'ouvertureThe two openings 108 and 110 each have a V-shaped end, namely 112 and 114 respectively, these two ends being arranged head to tail. The end 112 of the opening 108 is directed downward, while the end 114 of the opening
110 est dirigée vers le haut (voir la Figure 1). Chacune de ces extrémités, par exemple l'extrémité 112, est délimitée par deux bords droits 116 formant entre elles un angle choisi A, typiquement compris entre 50° et 70°, dans l'exemple de 60°110 is pointing upwards (see Figure 1). Each of these ends, for example the end 112, is delimited by two straight edges 116 forming between them a chosen angle A, typically between 50 ° and 70 ° , in the example of 60 °
(Figure 8). Ces deux bords droits 116 se raccordent à un bord(Figure 8). These two straight edges 116 are connected to an edge
118 en arc de cercle dont le diamètre est légèrement supérieur au diamètre de la partie tubulaire 28 du bras.118 in an arc, the diameter of which is slightly greater than the diameter of the tubular part 28 of the arm.
Les bords droits 116 de l'ouverture 108 ne forment pas un véritable V, dans la mesure où ils se raccordent entre eux par un bord transversal 120.The straight edges 116 of the opening 108 do not form a true V, insofar as they are connected together by a transverse edge 120.
Ainsi, la partie tubulaire 28 du bras peut coulisser axialement dans le passage 32 et être immobilisée dans une position axiale et une position angulaire données. De plus, la partie tubulaire 30 peut être déplacée, simplement en coulissement axial, par rapport à la partie tubulaire 28, pour fournir un réglage supplémentaire de l'écran, comme déjà indiqué.Thus, the tubular part 28 of the arm can slide axially in the passage 32 and be immobilized in a given axial position and angular position. In addition, the tubular part 30 can be moved, simply in axial sliding, relative to the tubular part 28, to provide additional adjustment of the screen, as already indicated.
Le blocage en position de la partie tubulaire 28 par rapport à l'etrier s'effectue ainsi par la coopération de la paroi tubulaire de cette partie 28 avec les deux extrémités en V, orientées tête-bêche. Dans une version simplifiée, il est possible de prévoir que seule l'une des deux ouvertures comprend une extrémité en N .The locking in position of the tubular part 28 relative to the bracket is thus effected by the cooperation of the tubular wall of this part 28 with the two V-shaped ends, oriented head to tail. In a simplified version, it is possible to provide that only one of the two openings has an N-shaped end.
Chacune des coquilles, par exemple la coquille 100, comprend un bord replié supérieur 122 muni d'une encoche supérieure 124 en arc de cercle, propre à venir en regard d'une encoche supérieure homologue de l'autre coquille, ainsi qu'un bord replié inférieur 126 muni d'une encoche inférieure 128 en arc de cercle, propre à venir en regard d'une encoche inférieure homologue de l'autre coquille.Each of the shells, for example the shell 100, comprises an upper folded edge 122 provided with an upper notch 124 in an arc of a circle, adapted to come opposite an upper notch homologous with the other shell, as well as an edge folded lower 126 provided with a lower notch 128 in an arc, suitable for coming opposite a lower notch homologous with the other shell.
Ainsi, lorsque les coquilles sont disposées en vis-à-vis, les deux encoches supérieures en vis-à-vis et les deux encoches inférieures en vis-à-vis contribuent à définir un passage cylindrique vertical 130 qui admet un axe YY sensiblement orthogonal à l'axe XX du passage horizontal 32 (Figure 1). Ce passage vertical est conçu pour être traversé par le mât cylindrique vertical 22 décrit précédemment.Thus, when the shells are arranged opposite, the two upper notches facing each other and the two lower notches facing each other help to define a vertical cylindrical passage 130 which admits a substantially orthogonal YY axis to the axis XX of the horizontal passage 32 (Figure 1). This vertical passage is designed to be crossed by the vertical cylindrical mast 22 described above.
Les coquilles 100 et 102 sont généralement semblables et sont avantageusement réalisées par moulage d'une matière métallique.The shells 100 and 102 are generally similar and are advantageously produced by molding a metallic material.
Elles sont maintenues entre elles par au moins deux vis 132 (Figure 3) qui traversent deux ouvertures circulaires 134 de la coquille 100 et qui viennent coopérer avec des passages filetés homologues de la coquille 102.They are held together by at least two screws 132 (FIG. 3) which pass through two circular openings 134 of the shell 100 and which cooperate with threaded passages homologous to the shell 102.
L'etrier 20 comprend en outre un organe de blocage 136 du type à vis pour assurer le verrouillage de l'etrier dans une position axiale et angulaire définie. Cet organe 136 comprend un bouton 138 prolongé par une tige filetée 140 qui traverse une ouverture 142 de la coquille 100 et qui coopère avec un passage fileté en vis-à-vis de la coquille 102. Il est à noter que, du fait de l'effort en porte-à-faux exercé par le poids du bras et de l'écran, l'etrier 100 peut s'immobiliser en une position axiale et angulaire choisie par rapport au mât 22, par simple effet de coincement. L'organe de blocage 136 constitue simplement une sécurité pour verrouiller l'etrier en une position choisie par rapport au mât.The stirrup 20 further comprises a locking member 136 of the screw type for locking the stirrup in a defined axial and angular position. This member 136 comprises a button 138 extended by a threaded rod 140 which passes through an opening 142 of the shell 100 and which cooperates with a threaded passage opposite the shell 102. It should be noted that, due to the '' cantilever force exerted by the weight of the arm and the screen, the stirrup 100 can come to a stop in an axial and angular position chosen relative to the mast 22, by simple wedging effect. The locking member 136 simply constitutes a security device for locking the stirrup in a chosen position relative to the mast.
La rotule 38 de la Figure 10 diffère de celle décrite précédemment par le fait qu'elle est évidée au lieu d'être massive. Elle comporte en effet un evidement 144 qui débouche sur la face arrière 70. Ceci permet d'alléger la rotule et de faciliter sa réalisation par moulage, sans compromettre sa résistance mécanique compte tenu du matériau utilisé.The ball 38 of Figure 10 differs from that described above in that it is hollowed out instead of being massive. It in fact comprises a recess 144 which opens onto the rear face 70. This makes it possible to lighten the ball joint and to facilitate its production by molding, without compromising its mechanical strength taking into account the material used.
On procure ainsi un dispositif de structure simple, peu encombrant, permettant d'assurer une infinité de réglages possibles pour un écran plat à cristaux liquides.This provides a device of simple structure, compact, to ensure an infinite number of possible settings for a flat screen liquid crystal.
Il peut ainsi s'implanter facilement sur un poste, en particulier un pupitre informatique.It can thus be easily installed on a workstation, in particular a computer desk.
L'invention n'est pas limitée aux formes de réalisation décrites précédemment à titre d'exemple et elle est susceptible de nombreuses variantes. On comprendra notamment que l'etrier peut être utilisé avec différents types de bras et de mécanismes d'articulation. The invention is not limited to the embodiments described above by way of example and it is susceptible of numerous variants. It will be understood in particular that the stirrup can be used with different types of arms and articulation mechanisms.

Claims

Revendications claims
1. Dispositif de support pour un écran plat (12) à cristaux liquides, en particulier pour poste informatique, du type comprenant un bras (14) propre à être relié à une structure porteuse (16), ainsi qu'un mécanisme d'articulation (18) interposé entre le bras et l'écran,1. Support device for a liquid crystal flat screen (12), in particular for a computer station, of the type comprising an arm (14) suitable for being connected to a support structure (16), as well as an articulation mechanism (18) interposed between the arm and the screen,
caractérisé en ce que la structure porteuse comprend un étrier (20) ayant deux parois (104, 106) espacées horizontalement et munies respectivement de deux ouvertures alignées (108, 110) définissant un passage horizontal (32) d'axe donné (XX) propre à être traversé par le bras (14) disposé en porte-à-faux.characterized in that the supporting structure comprises a stirrup (20) having two walls (104, 106) spaced apart horizontally and provided respectively with two aligned openings (108, 110) defining a horizontal passage (32) of given axis (XX) to be crossed by the arm (14) arranged in overhang.
2. Dispositif selon la revendication 1, caractérisé en ce que le bras comprend un tube (28) à paroi cylindrique circulaire, et en ce que l'une au moins des ouvertures (108, 110) comprend une extrémité en V pour assurer le blocage en translation et en rotation du tube, par effet de coin.2. Device according to claim 1, characterized in that the arm comprises a tube (28) with a circular cylindrical wall, and in that at least one of the openings (108, 110) comprises a V-shaped end for blocking in translation and rotation of the tube, by wedge effect.
3. Dispositif selon la revendication 2, caractérisé en ce que les deux ouvertures (108, 110) de l'etrier (20) ont chacune une extrémité en N (112, 114) et en ce que ces deux extrémités en V sont disposées tête-bêche, l'une étant dirigée vers le haut et l'autre vers le bas.3. Device according to claim 2, characterized in that the two openings (108, 110) of the stirrup (20) each have an N-shaped end (112, 114) and in that these two V-shaped ends are arranged at the head - spade, one being directed upwards and the other downwards.
4. Dispositif selon l'une des revendications 2 et 3, caractérisé en ce que chacune des extrémités en V est délimitée par deux bords droits (116) formant entre eux un angle choisi (A) et se raccordant avec un bord en arc de cercle (118) ayant un diamètre légèrement supérieur au diamètre du tube.4. Device according to one of claims 2 and 3, characterized in that each of the V-shaped ends is delimited by two straight edges (116) forming between them a chosen angle (A) and connecting with an edge in an arc (118) having a diameter slightly greater than the diameter of the tube.
5. Dispositif selon la revendication 4, caractérisé en ce que l'angle choisi (A) est compris entre 50° et 70°, et de préférence égal à 60°. 5. Device according to claim 4, characterized in that the chosen angle (A) is between 50 ° and 70 °, and preferably equal to 60 °.
6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que les deux parois (104, 106) de l'etrier font partie respectivement de deux coquilles (100, 102) assemblées entre elles.6. Device according to one of claims 1 to 5, characterized in that the two walls (104, 106) of the caliper are respectively part of two shells (100, 102) assembled together.
7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que l'etrier comporte un passage cylindrique vertical (130) ayant un axe (YY) sensiblement orthogonal à l'axe (XX) du passage horizontal (32), ledit passage vertical étant prévu pour être traversé par un mât cylindrique vertical (22) faisant partie de la structure porteuse, de manière à permettre l'immobilisation de l'etrier en une position axiale et angulaire définie par rapport au mât (22), par effet de coincement en porte-à-faux.7. Device according to one of claims 1 to 6, characterized in that the stirrup comprises a vertical cylindrical passage (130) having an axis (YY) substantially orthogonal to the axis (XX) of the horizontal passage (32), said vertical passage being designed to be crossed by a vertical cylindrical mast (22) forming part of the support structure, so as to allow the stirrup to be immobilized in an axial and angular position defined relative to the mast (22), by cantilevering effect.
8. Dispositif selon les revendications 6 et 7, prises en combinaison, caractérisé en ce que chacune des coquilles (100, 102) comprend un bord replié supérieur (122) muni d'une encoche supérieure (124) en arc de cercle propre à venir en regard d'une encoche supérieure homologue de l'autre coquille, ainsi qu'un bord replié inférieur (126) muni d'une encoche inférieure (128) en arc de cercle propre à venir en regard d'une encoche inférieure homologue de l'autre coquille.8. Device according to claims 6 and 7, taken in combination, characterized in that each of the shells (100, 102) comprises an upper folded edge (122) provided with an upper notch (124) in a clean arc to come opposite an upper notch homologous with the other shell, as well as a lower folded edge (126) provided with a lower notch (128) in an arc of a circle suitable for coming opposite a lower notch homologous with the 'other shell.
9. Dispositif selon l'une des revendications 7 et 8, caractérisé en ce que l'etrier (20) comprend en outre un organe de blocage (136) à vis pour assurer le verrouillage de l'etrier dans cette position axiale et angulaire définie.9. Device according to one of claims 7 and 8, characterized in that the stirrup (20) further comprises a locking member (136) with screw to ensure the locking of the stirrup in this defined axial and angular position .
10. Dispositif selon l'une des revendications 1 à 9, caractérisé en ce que le bras est un tube telescopique (14) qui comprend une première partie cylindrique (28) propre à coulisser dans le passage horizontal (32) de l'etrier (20) et une deuxième partie cylindrique (30) propre à coulisser dans la première partie cylindrique (28) et supportant la rotule (36). 10. Device according to one of claims 1 to 9, characterized in that the arm is a telescopic tube (14) which comprises a first cylindrical part (28) suitable for sliding in the horizontal passage (32) of the bracket ( 20) and a second cylindrical part (30) capable of sliding in the first cylindrical part (28) and supporting the ball joint (36).
11. Dispositif selon la revendication 10, caractérisé en ce que la première partie (28) et la deuxième partie (30) du tube sont chacune de forme cylindrique circulaire et comprennent des moyens de blocage mutuel en rotation (34). 11. Device according to claim 10, characterized in that the first part (28) and the second part (30) of the tube are each of circular cylindrical shape and comprise means for mutual locking in rotation (34).
PCT/FR2002/000876 2001-03-12 2002-03-12 Support device for liquid crystal flat screen WO2002073085A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US10/469,231 US20040079858A1 (en) 2001-03-12 2002-03-12 Support device for liquid crystal flat screen
EP02722341A EP1368592A1 (en) 2001-03-12 2002-03-12 Support device for liquid crystal flat screen
JP2002572309A JP2004522920A (en) 2001-03-12 2002-03-12 Support device for flat type liquid crystal display screen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR01/03328 2001-03-12
FR0103328A FR2821901B1 (en) 2001-03-12 2001-03-12 DEVICE FOR SUPPORTING A FLAT SCREEN WITH LIQUID CRYSTALS

Publications (1)

Publication Number Publication Date
WO2002073085A1 true WO2002073085A1 (en) 2002-09-19

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PCT/FR2002/000876 WO2002073085A1 (en) 2001-03-12 2002-03-12 Support device for liquid crystal flat screen

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US (1) US20040079858A1 (en)
EP (1) EP1368592A1 (en)
JP (1) JP2004522920A (en)
FR (1) FR2821901B1 (en)
WO (1) WO2002073085A1 (en)

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GB2512387A (en) * 2013-03-28 2014-10-01 Whiteghyll Plastics Ltd Security bracket
GB2512387B (en) * 2013-03-28 2015-07-22 Whiteghyll Plastics Ltd Security bracket
CN104456009A (en) * 2014-11-04 2015-03-25 浙江大丰实业股份有限公司 Hanging type multi-dimensional movement mechanical arm
CN107489869A (en) * 2016-06-13 2017-12-19 弗拉尔创新有限公司 Monitor arm-piece coupling unit and the monitor arm-piece support including the coupling unit
WO2017217840A1 (en) * 2016-06-13 2017-12-21 Vlaar Innovations B.V. Monitor arm coupling unit for coupling a flat panel display monitor to an end of a monitor arm of a monitor arm stand, and monitor arm stand including such a monitor coupling unit
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CN109373133A (en) * 2018-08-23 2019-02-22 谢明仿 A kind of image procossing multi-screen exchange display device
CN109373133B (en) * 2018-08-23 2021-08-31 好活（昆山）网络科技有限公司 Multi-screen alternating current display device for image processing

Also Published As

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JP2004522920A (en) 2004-07-29
US20040079858A1 (en) 2004-04-29
FR2821901B1 (en) 2003-05-30
FR2821901A1 (en) 2002-09-13
EP1368592A1 (en) 2003-12-10

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