FR2481355A1 - MOTORIZED ARM TYPE BANK STORAGE - Google Patents

Abstract

THE INVENTION CONCERNS A BLIND OF THE TYPE INCLUDING ARTICULATED ARMS 1 AND 2, A LOAD BAR 3, A CYLINDER 4 ROTATING IN BEARINGS 5 AND A CANVAS 6 TENDED BETWEEN BAR 3 AND CYLINDER 4 ON WHICH IT CAN BE WINDED . ARMS 1 AND 2 ARE EACH EQUIPPED WITH A CYLINDER 11 AND 12 RESPECTIVELY WHOSE APPLICATION POINTS 13-14 AND 15-16 ARE LOCATED ON EACH OTHER OF EACH JOINT 17 AND 18 RESPECTIVELY. ARMS 1 AND 2 CAN BE MOVED AT WILL AND LOCKED IN THE DESIRED POSITION. CYLINDER 4 IS ASSOCIATED WITH A SPRING (NOT SHOWN) WHICH PERMANENTLY REQUESTS IT IN THE DIRECTION CORRESPONDING TO THE WINDING OF THE CANVAS 6. IT IS EQUIPPED WITH A BRAKE DRUM 19 WITH WHICH CAN COOPERATE A SHOE 20 CONTROL IN SYNCHRONISM WITH CYLINDERS 11 AND 12.

Description

The present invention relates to a motorized

  blind type of banne that is to say comprising a canvas stretched over a load bar and wound on a cylinder. Articulated arms are connected to the load bar so that unwinding the canvas

  of the cylinder the load bar moves away from the cylinder and

  fold the canvas. Likewise by rolling the fabric over the cylinder

  the arms fold back because the canvas pulls on the

load bar.

  To obtain the first maneuver above, it must be ensured that the arms are deployed and, for this, we know two essential means: - The arms, by L-eur kinematic design itself exert a push on the bar of charge. Arms of this

  type are, for example, of the type "Nuremberg scissors".

  - The arms are equipped with a device. Springs that tends permanently, to open the arms, which amounts to exercise

  a pressure on the load bar.

  The first solution is relatively expensive to

  truce and has disadvantages as to the clutter

and the aesthetics of the whole.

  The second solution is the one that is most often

  adopted in recent years for its simplicity

quoted and cost price.

  However, it has disadvantages First of all the assembly of the springs is delicate and

  dangerous because the arms must be delivered folded to

  to reduce their size and are thus maintained by means of a solid link. When assembling the awning you must, of course,

  remove this link and this is frequently the occasion for

  teeth of the fact that the spring is necessarily very powerful

  and tends to open arms with a force that is difficult to control

  sand. Yet another bigger disadvantage exists in the very function of the arms because if they act

  well in the sense of a load bar push that's

  that is to say in the direction of movement of the canvas, they have no action against the opposite movement. It would be very

  important to immobilize the arms in the chosen position.

  In fact, a banana is, by its nature, of great size.

  because it has to equip very old windows such as shop windows, restaurant terraces, etc ... and, in this way, it is a real sail sensitive to the effects of wind and it is very frequent to see

  canvases inflate as a result of wind swirls as-

  cendant and this results in soliciting the arms and the

  load bar with efforts that are sometimes sufficiently

  to deteriorate the entire frame of the blind.

  This accident could be avoided if the blind had organs capable of elastically withstanding these efforts in order to yield without breaking, which supposes that all the moving elements come out motionless when they are in the desired position and that there is a elastic force

properly calibrated.

  The present invention provides a solution to this problem.

  me and provides new advantages for the function-

banne blinds.

  The invention will be well understood from the detailed description of

  Hereinafter with reference to the accompanying drawing. Well understood

  description and drawing are given only as

  indicative and non-limiting example.

  FIG. 1 is a schematic perspective view of a blind according to the invention, the fabric of which is in a position of

deployment.

  FIG. 2 is a schematic perspective view of the

  same blind but whose canvas is in the winding position.

  FIG. 3 is a schematic profile view corresponding to

  in the position shown in Figure 1.

  A blind according to the invention is of the type comprising, on the one hand, an armature composed of articulated arms, a load bar and a cylinder and, on the other hand, a fabric stretched between the load bar and the cylinder. on which it can be wound, and is characterized in that each arm is provided with a mechanism with two points of application located on either side of the articulation of the two half-arms which make up each arm in order to permanently immobilize

  in their two possible directions of movement when the mechanism

  is stopped, while the cylinder is associated on the one hand with an organ such as a spring intended to solicit it in

  in the direction of rotation corresponding to the winding

  canvas and on the other hand to a brake.

  According to one variant, the brake is of the gradual friction type and comprises a rotating member such as a drum 19, a disc or the like and a support member such as a

  pad 20, a jaw and the like.

  According to another variant, the positive locking type brake comprises a rotating member such as a pinion gear, a notch wheel and the like and a stop member such as

than a finger.

  According to a feature of the invention, the mechanism of each arm is constituted by a double-acting cylinder whose cylinder on the one hand and the rod on the other hand are articulated

  at their ends, according to two points of application

  on a half-arm and on the other, this cylinder being placed in communication with a fluid under permanent pressure and controlled by organs of any known type likely to

  vary the relative position of the cylinder and the rod.

  Referring to the drawing, it can be seen that a blind according to the invention comprises on the one hand an armature composed of

  articulated arms 1 and 2, a load bar 3, a cylinder

  4 rotatably mounted in bearings 5 and secondly, a fabric 6 stretched between the load bar 3 and the cylinder 4

  on which it can be rolled up.

  Each arm is composed as is known per se, two half-arms respectively la, lb 'and 2a, 2b hinged together. The half-arms 1a and 2a are articulated on fixed supports 7 and 8 while the half-arms 1b and 2b are

  articulated to the load bar 3 by pivots 9 and 10.

  Each arm 1 and 2 is equipped with a mechanism, here a

  double-acting rin respectively 11 and 12, which has two points of application 13 and 14 on the one hand 15 and 16 on the other hand located on both sides of the joints 17 for the arm 1

and 18 for the arm 2.

  The cylinder 4 is equipped, as is known per se, with a spring mechanism (not visible in the drawing) by

  which he is constantly seeking in his sense of

  corresponding to the winding of the fabric 6.

4 2481355

  In addition, the cylinder 4 is secured to a drum 19 opposite which is a movable pad 20 capable of

  to be applied more or less energetically against this

  19 to stop the rotation of the cylinder 4 and, at the in-

  poured, to be removed from the drum 19 to release the rotation

of the cylinder 4.

  The cylinders 11 and 12 are connected to a source of fluid under pressure (not shown) via a

  control box 21 which leads on the one hand

  fluid supply 22 and, on the other hand, two

  23 and 24 respectively leading to the cylinders 11

and 12.

  These are of the classic "double-acting" type that is

  that is to say that the body Ila-12a of the jack contains a solid piston

  11b-12b and placed so that the pipes 23 and 24 open into the body

  lla-12a on both sides of this piston.

  On the lines 23 and 24 are connected two

  respectively 25 and 26 leading to a housing 27 in which is provided a mechanism of any known type connected

in the mobile skate 20.

  The operation of the blind that has just been described is as follows:

  The fabric 6 is supposed to be deployed, as is the case

  shown in Figure 1, it is kept tense, because the pressurized fluid was established by action on one of

  buttons 28 or 29 of the housing 21 so that the ti-

  11 and 12 b of cylinders Il and 12 are in the position of ex-

  tension and held stationary in this position because the piston integral with each of these rods can move in the corresponding cylinder lla-12a against the pressure of the fluid. The jacks 11 and 12 thus have the effect of immobilizing the two half-arms la-lb on the one hand and 2a-2b on the other hand, so that the load bar 3 is

herself immobilized.

  The mechanism placed in the case 27 occupies, in synchronization

  with cylinders 11 and 12, a position corresponding to

  the more or less energetic action of the pad against the drum.

  bour 19 so that the cylinder 4 tends to be immobilized.

  As explained in the preamble above, this immobilization of all the movable elements of the blind ensures the stability of the fabric in all circumstances thanks to the combined action of the pad 20 against the drum 19 which creates a force easily calibrated during construction.

  To wind the fabric 6, either in part or in total

  (FIG. 2) one of the buttons 28 or 29 of the

  control box 21 so that the fluid under pres-

  In doing so, the integral pistons of the rods 11b and 12b move in the cylinders 11a and 12a so that the rods 11b and 12b are sinking and pulling on the half-pipes. arms lb and 2b by their points of application 14 and 16, the cylinders 11a and 12a being connected, them, the half-arms la and 2a. Arms

  therefore fold back and raise the load bar 3.

  Simultaneously, the fluid in motion acts on the mechanism placed in the housing 27 to place the pad 20 in a position away from the drum 19 so that the latter and the cylinder 4 which it is integral can rotate freely, this that they do under the effect of the spring mechanism which permanently urges the cylinder 4, these provisions resulting in winding

  automatically the canvas 6 on the cylinder 4 as and when

  sure that the loaded bar 3 goes back up, that is to say so much

  that the rods llb-12b are moving.

  When the fabric 6 is sufficiently wrapped at the discretion of the user, it stops its action on the button of the

  control box 21, which has the instantaneous effect of

  mobilize the rods llb-12b of the cylinders 11-12, the arms 1-2 and the load bar 3. The cylinder 4, meanwhile, undergoes

  braking, the value of which is established, for example, in pre-

  seeing a spring which acts permanently on the shoe 20 and which is temporarily neutralized by compression, that

By-.le-fluid under pressure.

  When the fabric 6 is completely wound (FIG. 2) the arms 1 and 2 are completely folded like arms

  standards because the cylinders 11 and 12 are placed in such a way

  they do not oppose their complete withdrawal. Even-

  Cylinders 11 and 12 can be accommodated in the

  profile of the arms as soon as the lateral deflection of the

  rins and rods relative to the arms is provided.

  To deploy the fabric 6, it is sufficient to act on the

  the tone of the control box 21 which causes the effects

  of the other, so that the pressurized fluid moves in the lines 23 and 24 in the direction of the

  arrows F2, and actuates the pistons secured to the rods 11b-

  12b in the direction of the extension of these rods, which push the half-arms lb and 2b and, consequently, the bar of

  3. The canvas 6 unfolds because the bar of

  and the fact that the shoe 20 is moved away from the drum

  bour 19 thus become free with the cylinder 4.

  It can be seen that the brake constituted by the assembly 19-20 associated with the cylinder 4 comprises a mechanism synchronized with

  at least one of those who equip the arms 1 and 2.

  Here, as described, these mechanisms are constituted by the cylinders 11 and 12. The synchronism can be obtained

  hydraulic connection according to which the shoe 20 is

  and automatically urged in the braking position of the drum 19 while it is placed in the inactive position as soon as

  that the fluid under pressure is set in motion, that it is

  the extension or folding of arms 1 and 2.

  According to a characteristic of the invention, the pipes

  of pressurized fluid extend from a source

  than the cylinders through the control box includes

  valves that control the flow of the fluid

under pressure.

  According to a feature of the invention, the mechanism of each arm is constituted by a single-acting jack that is to say comprising only a single fluid line, this jack comprising a spring permanently urging the rod of the jack in the direction opposite to that given by the fluid, this spring being advantageously constituted by a

  compressed fluid such as air, nitrogen or the like.

  This arrangement (not shown in the drawing) makes it possible to simplify the construction of the blind and to remove one

pipes, either 23 or 24.

  The fluid under pressure is preferably constituted by an incompressible liquid such as oil, so that

248 1'355

  the compressed fluid such as a gas, can be elastic without causing the disadvantages of known blinds

  and recalled in the preamble above, since here the whole

  The fluids used are incompressible and make the set inelastic only up to a certain threshold beyond which the arms become elastically deformable in

  meaning allowing the play of the canvas in the manner of a

  the and his return to his prior tension.

  The invention is not limited to the modes of

  described and represented, but on the contrary

all variants.

1.

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Claims (6)

  1 - Store of the type comprising on the one hand a composite frame   Articulated arm series (1 and 2), load bar (3)   anda cylinder (4) rotating in bearings (5) and   apart from a canvas (6) stretched between the load bar   (3) and the cylinder (4) on which it can be hoisted   characterized in that each arm (1-2) is provided with a mechanism (1112) with two application points (13-14 and 15-16) located on either side of the articulation   (17-18) of the two half-arms (la-lb and 2a-2b) which   each arm (1-2) to permanently block them   this in their two possible directions of movement when the mechanism (11-12) is stationary while the cylinder (4) is associated on the one hand with a member such as a spring intended to urge permanently in its corresponding direction of rotation at the winding of the fabric (6) and on the other hand to a brake (19-20).   2 - blind according to claim 1, characterized in that the brake is of the type with gradual friction and comprises a   rotating member such as a drum (19), a disk or an   as well as a support member such as pad (20), a jaw and the like.   3 - blind according to claim 1, characterized in that the   The brake is of the positive locking type and   turning gear such as a toothed gear, a notch wheel and   analog and a stop member such as a finger.   4 - Blind according to claim 1, characterized in that the mechanism (11-12) of each arm is constituted by a double-acting cylinder whose cylinder (11a-12a) on the one hand and the rod (11b-12b) on the other hand are articulated by   their ends, according to two points of application   respectively (14-16) on a half-arm (la-2a) and (13-15)   on the other (16-26), this cylinder (11-12) being put in   communication with a fluid under permanent pressure and   controlled by organs (21) of any known type capable of   tibles to vary the relative position of the cylinder (lla-12a) and the rod (llb-12b).   - Blind according to claim 1, characterized in that the   brake (19-20) associated with the cylinder (4) comprises a mechanism   synchronized nism with at least one of those (11 -, 12) who. equip the arms (1 - 2) ..   6 - blind according to claims 4 and 5, characterized in that   it comprises pressurized fluid lines (23-24) which extend from a source to the cylinders (11-12) via a control box (21) including valves which control the flow of the fluid under pressure.   7 - Blind according to claims 4 and 5 characterized in that   the mechanism of each arm is constituted by a cylinder   simple effect, that is to say comprising only one   of the fluid, this jack comprising a spring permanently urging the rod of the jack in the opposite direction   to that given by the fluid, this spring being advantageously   formed by a compressed fluid such as air, nitrogen or the like. .