WO2006008372A1

WO2006008372A1 - Mechanism for a table with a carriage and a slide of an extending tray

Info

Publication number: WO2006008372A1
Application number: PCT/FR2005/001512
Authority: WO
Inventors: Daniel Cote
Original assignee: Daniel Cote
Priority date: 2004-06-18
Filing date: 2005-06-17
Publication date: 2006-01-26
Also published as: FR2871667A1; FR2871667B1

Abstract

The inventive mechanism for an extending tray table embodied in the form of a movable carriage which is mounted on a central beam and is provided with a top slide movably associated with the motion thereof.

Description

Trolley and slide table mechanism for outgoing tray

The present invention relates to a table mechanism which unfolds linearly cantilevered before its tray fixed on a slide, itself mounted on a carriage movable on a beam, the assembly connected together by a set of rack pinion, motorisable to smile. This system is particularly suitable for the needs of ophthalmology cabinet because it allows to scroll through the different devices without moving the patient with an automatic system that is disengaged if necessary.

The operating kinematics of this invention is defined by a combined movement of a carriage 3 mounted rolling on a central beam corresponding to the fixed part of the table. This carriage will have a pinion 6, on one of these axes, placed between a rack 7 fixedly mounted on the central beam 1 and another rack 5 fixedly mounted on a second slide 2 fixed at the top of the carriage which corresponds to the tray support 8. Thus connected, the dynamic displacement of the plate will be double, in reference to the static point of the table that will be the central beam 1 fixed on feet 14. For a stroke of X millimeters of the carriage, (that is by moving manual thereof or motorized by the axis 1 l, which is mechanically linked with the pinion 6), the displacement of - that relative to the fixed low rack 7 will cause the rotation of the pinion which in turn goes move the rack 5 from the equivalent distance so the X millimeter plate. For a displacement value of the carriage 3, there will therefore be a double value of displacement of the plate, which will make it possible to deploy the entire dimension of the plate in the extended position while moving only half of the carriage 3 (FIG. . For the mounting of the motorized part fixed directly on the shaft 11, an electromagnetic clutch mechanism 10 performs the coupling in the part 13 with the motorlό. This function is used to disconnect the motor in order to release the plate movement for a manual adjustment intervention very useful in this trade.

In the use made of the table, the entire outgoing system must be of high rigidity and low thickness, for the passage of the legs of the client.

The realization of the tray beam 2 mounted with rollers laterally fixed allows to align all the outgoing elements on the same height in this optic. The truck carrying a higher load but whose part remains non-output, will be mounted with axis and rollers with four flanges type 3, mounted opposite each other and rolling on guides mounted on the central beam 1

Mechanical assembly of this carriage will be realized for its displacement by 8 curved outer rollers mounted on four axes with positioning spacers 12. Concerning travel races (Figure 3)

By fixing the rollers at the rear and in the middle of the beam 2, a displacement stroke is kept in the guide grooves 5, dimensioned themselves, of a length equal to the beam. The dimension of the carriage between the front and rear flanges will be smaller, along the length of the central beam to allow a displacement stroke like that of the beam 2. The driving pinion will be mounted at the level of the front shaft which corresponds to the maximum point crossing slides.

Claims

1 / table mechanism characterized in that it comprises a table top that can be deployed at the front cantilevered by a system of two movable members whose main is a carriage (3), which moves on a fixed central beam (1), supporting a second member (2) on its upper part, whose displacement is mechanically linked to the movement of the carriage by a pinion (mounted at the front shaft) taken between two mounted racks on a motorized axis or not with a clutch.

2 / Table mechanism according to claim 1, characterized in that the carriage consists of four flanges (3) and two bars (15) parallel, and moves on the central beam positioned by four axes equipped with grooved rollers. 3 / Mechanism according to claim I or 2 characterized in that the table support beam 2 is mounted laterally between the upper bars of the carriage 3 by rollers and slides.

4 / mechanism according to claim 1 characterized in that the system has a motor with electromagnetic coupling (10) fixed on the shaft equipped with the pinion (1 1) which is located between the two slides and the front of the carriage. b / Mechanism according to any one of the preceding claims characterized in that the displacement is done with two racks fixed parallel to either side of the movable pinion: one on the fixed central beam (I), the other on the beam (2) supporting the plate.

£ j. Mechanism according to any one of the preceding claims characterized in that the central beam (I) supporting the carriage is fixed on feet (14) at each end.