FR2646887A1 - Jib sheet guide carriage - Google Patents

Abstract

Sailing boat sheet guide carriage characterised by a horizontal axis about which there rotates independently a central roller and two lateral guide cheeks.

Description

GUIDE TROLLEY
OF ECOTITE OF FX
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The invention relates to a guide carriage for sheets used for maneuvering sails, mainly jibs and genoa on pleasure boats.

 It differs from known solutions such as articulated pulley or downstream systems, or systems of combination of pulley and lateral rollers or roller, by a simpler and less expensive embodiment.

 The invention is characterized by a rigid structure which moves on a slide of a conventional type, fixed on the deck of the boat. This structure supports a single horizontal axis on which three independent mobiles rotate: a central cylindrical roller framed by two side guide cheeks of generally conical shape. The rigid structure constitutes, around these mobiles, a firm guide ring which keeps the sheet in position and protects all of the external aggressions while ensuring good job security.

 The following description of an embodiment of the invention will make it easier to understand it with reference to FIGS. 1 to 4.

 A rigid structure 1 slides on a rail 2 by means of pads 3 and 4 made of a material with a low coefficient of friction such as a polyacetal plastic material, whether or not loaded with graphite or PTFE (teflon).

 This structure maintains a horizontal axis 5 on which freely rotate a central roller 6 and two side guide cheeks 7 and 8. These three mobiles can rotate freely, guided on bearings of a known type, or plain bearing as shown in the figure , either needle or ball bearings.

 The sheet -17 passes under the central roller 6 by resting on the latter. Fixed bosses 9 and 10, inclined at approximately 45 ', guide the listening when it is not energized.

 The cheeks 7 and 8 allow the sheet to be guided laterally under the effect of an oblique deflection both at the entry and at the exit of the guide carriage. For this, the support faces 18 and 19 placed at the center of the cheeks 7 and 8 support the lateral thrust of the sheet while minimizing friction. Ball bearings can be beneficial to further improve functioning.

 A pulling ring placed at the front of the cart allows to hang a rope to move the cart on its rail.

 A locking finger 12 penetrates in the low position into lock holes; ge 20 drilled in the guide rail 2 at regular intervals. it allows the trolley to be immobilized on demand on its rail.

This finger 12 slides freely vertically in the fixed boss 21. A groove system 13, associated with a plate 14 and a retaining pin 15, makes it possible by rotation of the finger 12 180, in the high position, to keep it out of the holes 20 to leave the carriage free to slide on the rail 2, on request
The rigid structure 1 is characterized by an upper bridge 16 closing the assembly in order to ensure good protection of the mechanism and to improve the rigidity of the assembly.

Claims (5)

CLAIMS ~ * ~ * ~ * ~ * ~ * ~ * ~ *  1- Jib sheet guide carriage, characterized by the use of a central roller 6 and two independent side cheeks 6 and 8 rotating on the same horizontal axis 5.  2- Trolley according to claim 1, characterized by a rigid structure-e 1 closed at its upper part 16 and maintaining the main horizontal axis 5; the assembly being able to slide on a conventional slide consisting of a rail 2 and sliding pads 3 and 4.  3- Trolley according to one of claims 1 or 2, characterized by an immobilization lock constituted by a finger 12 moving vertically by simple gravity and which can be maintained, in the high position, unlocked, by a stop device constituted by a pin 15 associated with a plate 14 and a circular groove 13 arranged on the finger 12.  4- Trolley according to one of claims 1 to 3, characterized by fixed bosses 9 and 10 of the sheet guide placed under the central roller on either side and ensuring the centering of the sheet when it is not energized.  5- Trolley according to any one of claims 1 to 4, characterized by a front pulling ring 11 facilitating the maneuver of moving the trolley on its slide.