FR2828322A1 - Remote-controlled motorized assembly for changing advertising posters has housing with reinforcing member and roller for plastic tapes - Google Patents

Abstract

The assembly consists of a housing (1) containing a reinforcing member and a motorized shaft (16) controlled by an infra-red or radio-operated switch to roll or unroll a pair of polyester tapes (21) on a roller (17) to set the required height of a suspended poster or other article.

Description

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The present invention relates to a system for changing advertising posters safely and in less than a minute. The change of posters suspended in height is traditionally carried out using lifting devices, rolling scaffolding, ladders or stepladders, which generally poses problems of balance, safety, loss of time and requires specific authorizations and qualifications.

The device in question, according to the invention, overcomes this drawback. Indeed, the operator no longer climbs towards the poster, but using a remote control or a switch, activates the motorized system to lower the poster automatically to the ground.

The principle of this device is not new, since there already exists a similar system described in patents FR 2676299 and FR 2741985. The present device clearly improves the already deposited system, in the sense that it simplifies it by integrating a only one engine instead of two and that it does not have a complicated electronic system, which makes it possible to offer a less expensive product.

The device is composed according to a first characteristic of an assembly consisting of two plastic shells (one fixed and one mobile). This contains a frame with a motorized axis remotely controlled by infrared or radio automations for winding or unwinding two polyester ribbons. The latter are terminated in a loop by fixing rings to receive carabiners in order to hang the poster rail.

The accompanying drawings illustrate the invention:
Figure 1 shows in isometric view, the assembled device.

Figure 2 shows an exploded view, the device of the invention as a whole
Figure 3 shows in section, the profiles and the sides of the metal frame
Figure 4 shows in isometric view, the assembled support frame
With reference to these drawings, the device comprises a hull articulated in two parts (1) connected by hinges (2) to facilitate access to the mechanism; On the bottom field of the shells, an opening for the implantation of the infrared or radio receiver (3) as well as at the ends of the housing (4), two rectangular holes for the housing of the ribbon grommets (11).

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Inside, a metal structure assembled by five elements: two lateral L-shaped angle irons (5) and an upper U-shaped angle angle (6) with holes provided for fixing hanging eyelets (7) allowing the device to be fixed at the desired height above the ground by 2 chains or cables attached to the ceiling.

At each end of these profiles: two sides (right and left) for closing the frame and holding the winding tube. On the left side (8) is provided a square orifice (9) for the interlocking of the motor as well as holes (10) for the installation of the receiver and the passage of the electric wires.

 On the right side (12) are also provided holes (13) for the implantation of a plastic pad (14) in order to receive the stud of the end piece opposite to the motor. This pad helps reduce both noise and sidewall wear.

Finally on each side, in the lower part, orifices of rectangular shape (15) are provided for the location of the ribbon passes (11). The latter are fixed to the shell and the frame in order to facilitate the passage and the guiding of the polyester ribbons (21) and thus to avoid any overlap or exit during its winding or its unwinding.

 This assembled armature (16) allows the 62mm diameter winding axis (17) to be maintained, where the ends are fitted: the tubular motor (18) 220/230 volts from 68 to 100 rpm with high limit switches and bottom for automatic stopping of the fastening rail in the high or low position and the end opposite the stud (19).

 On this axis are fixed four ribbon guide rings (20) for housing and guiding the two lifting tapes (21) during its rotation. These ribbons with an identical length of around 5.5m allow the fastening rail to be held in place and perfectly horizontal during its ascent or descent. They are hung on the axis by a clip between the ribbon guide rings, and terminated in a loop by fixing rings (22) to receive carabiners (23) in order to hang the poster fixing rail (24).

Claims (6)

 CLAIMS 1) Motorized device maneuvered by remote control or fixed switch to facilitate the change of advertising posters or objects hung at height, characterized by a box (1) containing a frame (16) with a motorized axis remote controlled by infrared automations or radio allowing two polyester ribbons (21) to be wrapped or unwound around a tube in order to hang one or more posters at the desired height. 2) Device according to claim 1 characterized in a system which constitutes a partially articulated shell (1) with hooking eyelets (7) for easy access to the mechanism and fixing at desired height of the device relative to the ground by 2 chains or cables attached to the ceiling. 3) Device according to claim 1 or claim 2 characterized by two lifting tapes of identical length allowing the maintenance and perfect horizontality of the fixing rail (24) during its ascent or descent. 4) Device according to any one of the preceding claims, characterized by the automatic stopping of the fixing rail in the desired high or low position, provided by limit switches incorporated in the motor (18). 5) Device according to any one of the preceding claims, characterized by a metallic structure composed of 5 assembled elements (5-6-8-12) for the maintenance of the winding mechanism.  6) Device according to any one of the preceding claims characterized by tape runners (11) allowing the guidance of the ribbons (21) on the axis in order to avoid any overlap or exit during its winding or its unwinding.