FR2509281A1 - Platform hoist positioned by lead screw nut, pref. of polyacetal - esp. for supporting television sets - Google Patents
Platform hoist positioned by lead screw nut, pref. of polyacetal - esp. for supporting television sets Download PDFInfo
- Publication number
- FR2509281A1 FR2509281A1 FR8113666A FR8113666A FR2509281A1 FR 2509281 A1 FR2509281 A1 FR 2509281A1 FR 8113666 A FR8113666 A FR 8113666A FR 8113666 A FR8113666 A FR 8113666A FR 2509281 A1 FR2509281 A1 FR 2509281A1
- Authority
- FR
- France
- Prior art keywords
- plate
- mechanism according
- articulated
- nut
- threaded rod
- 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
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/065—Scissor linkages, i.e. X-configuration
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B81/00—Cabinets or racks specially adapted for other particular purposes, e.g. for storing guns or skis
- A47B81/06—Furniture aspects of radio, television, gramophone, or record cabinets
- A47B81/061—Furniture aspects of radio, television, gramophone, or record cabinets the device supports being adjustable
- A47B81/064—Furniture aspects of radio, television, gramophone, or record cabinets the device supports being adjustable vertically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/0608—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement driven by screw or spindle
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
Description
L'invention a pour objet un mécanisme élévateur destiné à soulever une charge telle qu'un récepteur de télévision. Ce mécanisme est caractérisé par le fait qu'il comprend un plateau horizontal mobile verticalement, à un bord duquel est fixé un écrou engagé sur une tige filetée verticale susceptible d'strie mise en rotation par un moteur, ledit plateau mobile étant en outre soutenu et maintenu en situation horizontale par au moins un croisillon articulé déformable, prenant appui sur une embase horizontale fixe. The invention relates to a lifting mechanism intended to lift a load such as a television receiver. This mechanism is characterized by the fact that it comprises a vertically movable horizontal plate, at one edge of which is fixed a nut engaged on a vertical threaded rod capable of being rotated by a motor, said movable plate being further supported and maintained in a horizontal situation by at least one deformable articulated cross, bearing on a fixed horizontal base.
De préférence, le système écrou-tige filetée est irréversible. Cette disposition assure le maintien du plateau et de sa charge en toute position désirée après arrêt du moteur, sans qu'il soit besoin de prévoir un dispositif complémentaire de freinage. Preferably, the threaded rod nut system is irreversible. This arrangement maintains the plate and its load in any desired position after stopping the engine, without the need to provide an additional braking device.
L'écrou du mécanisme peut être avantageusement réalisé en matière plastique, par exemple en résine poly acétal telle que la résine connue sous l'appellation / /Dans une forme d'exécution préférée, commerciale de- "Delrin"/chaque croisillon articulé est constitué par une première biellette articulée, à son extrémité supérieure, au plateau et munie, à son autre extrémité, d'un galet roulant sur l'embase horizontale, et par une deuxième biellette articulée d'une part, à son extrémité inférieure, en un point fixe situé au niveau de l'embase, à l'aplomb du point d'articulation au plateau de la première biellette, et d'autre part, en son milieu au milieu de la première biellette, et munie à son extrémité supérieure d'un galet roulant contre la face inférieure du plateau mobile.De préférence, les points d'articulation des biellettes opposés à leurs galets de roulement sont voisins de la tige filetée. The nut of the mechanism can advantageously be made of plastic, for example polyacetal resin such as the resin known by the name / / In a preferred, commercial embodiment of- "Delrin" / each articulated spider is made up by a first articulated link, at its upper end, to the plate and provided, at its other end, with a roller rolling on the horizontal base, and by a second articulated link on the one hand, at its lower end, in a fixed point located at the level of the base, plumb with the point of articulation with the plate of the first link, and on the other hand, in its middle in the middle of the first link, and provided at its upper end with a roller rolling against the underside of the movable plate. Preferably, the articulation points of the rods opposite their rolling rollers are close to the threaded rod.
I1 sera en général préférable que le plateau mobile soit soutenu par plusieurs croisillons articulés
Juxtaposés, en particulier par une paire de croisillons.It will generally be preferable for the movable platform to be supported by several articulated cross bars
Juxtaposed, in particular by a pair of braces.
Lorsqu'une course verticale de grande amplitude est désirée pour le plateau, il convient que ce dernier soit soutenu par un ensemble de croisillons articulés superposés sur plusieurs étages. Ces croisillons sont reliés entre eux par des articulations. Bien entendu, seule l'une des biellettes du croisillon inférieure et seule l'une de celles du croisillon supérieur sont alors munies de galets de roulement.When a vertical stroke of large amplitude is desired for the platform, it should be supported by a set of articulated cross-pieces superimposed on several floors. These braces are connected together by joints. Of course, only one of the links of the lower spider and only one of those of the upper spider are then provided with rollers.
La tige filetée précitée est avantageusement montée dans encarter en forme de colonne, ouvert du cssté du plateau pour permettre la liaison de l'écrou au plateau. The aforementioned threaded rod is advantageously mounted in a column-shaped box, open from the plate assembly to allow the connection of the nut to the plate.
Un mécanisme élévateur selon l'invention présente une grande efficacité et une structure très simple. I1 peut être utilisé dans des meubles de salon pour dissimuler un poste de télévision, dans des meubles de cuisine pour escamoter un coffre de rangement, dans des meubles de bureau pour dissimuler des appareils informatiques, etc. A lifting mechanism according to the invention has great efficiency and a very simple structure. It can be used in living room furniture to hide a television set, in kitchen furniture to conceal a storage chest, in office furniture to hide computer devices, etc.
La description qui va suivre, en regard du dessin annexé à titre d'exemple non limitatif permettra de bien comprendre comment l'invention peut autre mise en pratique. The description which follows, with reference to the attached drawing by way of nonlimiting example, will make it possible to understand clearly how the invention can be put into practice.
La figure unique représente en coupe verticale un mécanisme élévateur selon l'invention. The single figure shows in vertical section an elevating mechanism according to the invention.
Dans une encoche pratiquée sur le bord d'une planche horizontale 1 servant d'embase est disposé un châssis 2 supportant un moteur 3 équipé d'un réducteur 4 et une colonne 5 dressée verticalement et ouverte d'un ctté sur toute sa hauteur. Dans cette colonne est montée une tige filetée 6 verticale, couplée au réducteur 4 de sorte qu'elle peut autre mise en rotation par le moteur 3. In a notch formed on the edge of a horizontal board 1 serving as a base is disposed a chassis 2 supporting a motor 3 equipped with a reducer 4 and a column 5 erected vertically and open with a side over its entire height. In this column is mounted a vertical threaded rod 6, coupled to the reduction gear 4 so that it can be further rotated by the motor 3.
A sa base, la tige filetée 6 repose sur une butée à aiguilles 7. Sur ladite tige filetée est engagé un écrou 8 portant une attache 9 fixée b un plateau horizontal 10.At its base, the threaded rod 6 rests on a needle stopper 7. On said threaded rod is engaged a nut 8 carrying a fastener 9 fixed to a horizontal plate 10.
Ce plateau est en outre soutenu par deux croisillons articulés 11 Juxtaposés, -dont chacun comprend une biellette 12 d'une part articulée en 13 au plateau 10, en un point proche de l'écrou 8, et d'autre part prenant appui par un galet rotatif 14 sur l'embase I > et ur.e biellette 15 qui d'une part est articulée en un point 16 solidaire de l'embase 1 et voisin du pied de la tige filetée 6, et d'autre part soutient le plateau 10 par un galet rotatif 17, les deux biellettes 12 et 15 étant au surplus articulées en leur point milieu 18. This plate is further supported by two articulated cross-links 11 juxtaposed, each of which comprises a link 12 on the one hand articulated at 13 to the plate 10, at a point close to the nut 8, and on the other hand supported by a rotary roller 14 on the base I> and ur.e link 15 which on the one hand is articulated at a point 16 secured to the base 1 and adjacent to the foot of the threaded rod 6, and on the other hand supports the plate 10 by a rotary roller 17, the two connecting rods 12 and 15 also being articulated at their midpoint 18.
Sur la figure, le plateau 10 est représenté en position haute. S l'on fait tourner, au moyen du moteur 3, la tige filetée 6 dans le sens convenable, l'écrou 8 descend le long de celle-ci et fait s'abaisser le plateau 10, lequel reste horizontal grâce au double croisillon 11 qui se déforme en s'applatissant. On peut ainsi, en faisant descendre l'écrou en 8a, amener le plateau 10 en sa position basse 10a, où le double croisillon 11 se trouve complètement à plat. Plus généralement, par mise en rotation de la tige filetée 6 dans. un sens ou dans l'autre, il est possible de faire prendre au plateau 10 toute position intermédiaire entre ses positions extrêmes. In the figure, the plate 10 is shown in the high position. If the threaded rod 6 is rotated by means of the motor 3 in the proper direction, the nut 8 descends along the latter and the plate 10 is lowered, which remains horizontal thanks to the double cross 11 which deforms by becoming flattened. It is thus possible, by lowering the nut at 8a, to bring the plate 10 into its low position 10a, where the double cross 11 is completely flat. More generally, by rotating the threaded rod 6 in. one way or the other, it is possible to make the plate 10 take any position intermediate between its extreme positions.
Après arrêt du moteur 3, le plateau 10, portant la charge qu'il a mission de faire monter ou descendre, demeure dans la position atteinte, car l'ensemble écrou 8 - tige filetée 6 est conçu pour être irréversible, par un choix
Judicieux du pas et de la forme de son filetage; des matières employées pour l'écrou et pour la tige filetée, ainsi que des caractéristiques du groupe moto-réducteur 3, 4.After stopping the engine 3, the plate 10, carrying the load which it has the task of raising or lowering, remains in the position reached, because the nut 8 - threaded rod 6 assembly is designed to be irreversible, by a choice
Judicious of the pitch and the shape of its thread; materials used for the nut and for the threaded rod, as well as characteristics of the geared motor group 3, 4.
Dans un exemple d'exécution donné à titre indicatif, on a utilisé une vis 6 de diamètre égal à 16 mm, à filet trapézoidal de pas égal à 4 mm > associée à un écrou 8 en "Delrin-" et actionnée par un moteur 3 de 100 W tournant à 2800 t/min via un réducteur 4 de rapport 6/450. Une table levante ainsi équipée s'est révélée capable de manoeuvrer une charge de 60 kg; la charge a mEme pu entre portée à 125 kg sans que la plateau manifeste aucune tendance à redescendre spontanément à l'arrêt du moteur. In an exemplary embodiment given as an indication, a screw 6 of diameter equal to 16 mm was used, with trapezoidal thread of pitch equal to 4 mm> associated with a nut 8 in "Delrin-" and actuated by a motor 3 of 100 W rotating at 2800 rpm via a reduction gear 4 of ratio 6/450. A lifting table thus equipped has proved capable of maneuvering a load of 60 kg; the load was even able to reach 125 kg without the plate showing any tendency to drop spontaneously when the engine stopped.
I1 convient de prévoir dans la colonne Sdes interrupteurs de fin de course tenon représentés) définissant les positions extrêmes haute et basse du plateau 10. I1 should be provided in the column S of the tenon limit switches shown) defining the upper and lower extreme positions of the plate 10.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8113666A FR2509281B1 (en) | 1981-07-10 | 1981-07-10 | ELEVATOR MECHANISM FOR LIFTING A LOAD SUCH AS A TELEVISION RECEIVER |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8113666A FR2509281B1 (en) | 1981-07-10 | 1981-07-10 | ELEVATOR MECHANISM FOR LIFTING A LOAD SUCH AS A TELEVISION RECEIVER |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2509281A1 true FR2509281A1 (en) | 1983-01-14 |
FR2509281B1 FR2509281B1 (en) | 1985-10-04 |
Family
ID=9260445
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8113666A Expired FR2509281B1 (en) | 1981-07-10 | 1981-07-10 | ELEVATOR MECHANISM FOR LIFTING A LOAD SUCH AS A TELEVISION RECEIVER |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2509281B1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3717247A1 (en) * | 1987-02-11 | 1988-08-25 | Paul Markreiter | Scissors platform lift |
US4790716A (en) * | 1986-06-03 | 1988-12-13 | Mcconnell Sylvia J | Device for handling a wheelchair |
DE29706534U1 (en) * | 1997-04-11 | 1997-05-22 | Hydraulik Techniek, Emmen | Scissor lift table |
FR2759682A1 (en) * | 1997-02-14 | 1998-08-21 | Ecollect | SECURE, NON-MOTORIZED ELEVATOR DEVICE ALLOWS TO TAKE CONTAINERS OR TECHNICAL BOXES UNDER THE ROAD |
FR2890545A1 (en) * | 2005-09-15 | 2007-03-16 | Tescam Sarl | Flat object e.g. television screen, lifting device for use with cabinet type support structure, has support constituted of beam that is driven at its one end by motorization unit and at another end by synchronization unit |
CN104030192A (en) * | 2014-06-05 | 2014-09-10 | 吉林大学 | Angle-variable adjustable jack |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3237921A (en) * | 1963-08-13 | 1966-03-01 | Jarke Corp | Power operated platform |
US3982718A (en) * | 1975-07-31 | 1976-09-28 | Dentsply Research & Development Corporation | Operatory chair operating mechanism |
FR2356389A1 (en) * | 1976-07-02 | 1978-01-27 | Phenix Or | TV cabinet with set on turntable - has elevator platform with scissors linkage operated by jack and motor driven hoist |
FR2369206A1 (en) * | 1976-10-28 | 1978-05-26 | Wache Albert | ELEVATOR DEVICE, PARTICULARLY APPLICABLE TO TELEVISION RECEIVER SUPPORT TABLES |
-
1981
- 1981-07-10 FR FR8113666A patent/FR2509281B1/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3237921A (en) * | 1963-08-13 | 1966-03-01 | Jarke Corp | Power operated platform |
US3982718A (en) * | 1975-07-31 | 1976-09-28 | Dentsply Research & Development Corporation | Operatory chair operating mechanism |
FR2356389A1 (en) * | 1976-07-02 | 1978-01-27 | Phenix Or | TV cabinet with set on turntable - has elevator platform with scissors linkage operated by jack and motor driven hoist |
FR2369206A1 (en) * | 1976-10-28 | 1978-05-26 | Wache Albert | ELEVATOR DEVICE, PARTICULARLY APPLICABLE TO TELEVISION RECEIVER SUPPORT TABLES |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4790716A (en) * | 1986-06-03 | 1988-12-13 | Mcconnell Sylvia J | Device for handling a wheelchair |
DE3717247A1 (en) * | 1987-02-11 | 1988-08-25 | Paul Markreiter | Scissors platform lift |
FR2759682A1 (en) * | 1997-02-14 | 1998-08-21 | Ecollect | SECURE, NON-MOTORIZED ELEVATOR DEVICE ALLOWS TO TAKE CONTAINERS OR TECHNICAL BOXES UNDER THE ROAD |
DE29706534U1 (en) * | 1997-04-11 | 1997-05-22 | Hydraulik Techniek, Emmen | Scissor lift table |
FR2890545A1 (en) * | 2005-09-15 | 2007-03-16 | Tescam Sarl | Flat object e.g. television screen, lifting device for use with cabinet type support structure, has support constituted of beam that is driven at its one end by motorization unit and at another end by synchronization unit |
CN104030192A (en) * | 2014-06-05 | 2014-09-10 | 吉林大学 | Angle-variable adjustable jack |
Also Published As
Publication number | Publication date |
---|---|
FR2509281B1 (en) | 1985-10-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |