EP0391805A1 - Selbsthaltende Winde mit gelenkig angeordneten Zähnen - Google Patents

Selbsthaltende Winde mit gelenkig angeordneten Zähnen Download PDF

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Publication number
EP0391805A1
EP0391805A1 EP90400935A EP90400935A EP0391805A1 EP 0391805 A1 EP0391805 A1 EP 0391805A1 EP 90400935 A EP90400935 A EP 90400935A EP 90400935 A EP90400935 A EP 90400935A EP 0391805 A1 EP0391805 A1 EP 0391805A1
Authority
EP
European Patent Office
Prior art keywords
drum
capstan
teeth
self
rope
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.)
Withdrawn
Application number
EP90400935A
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English (en)
French (fr)
Inventor
Claude Brenot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0391805A1 publication Critical patent/EP0391805A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
    • B66D1/74—Capstans
    • B66D1/7421—Capstans having a vertical rotation axis
    • B66D1/7436—Capstans having a vertical rotation axis drivable by both motor and manually
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/60—Rope, cable, or chain winding mechanisms; Capstans adapted for special purposes
    • B66D1/74—Capstans
    • B66D1/7494—Self-tailing capstans

Definitions

  • the present invention relates to a self-holding capstan with articulated teeth
  • a self-holding capstan with articulated teeth comprising a fixed support forming a base, a drum mounted so as to be able to rotate on the fixed support, a vertical shaft for driving the drum in rotation, connected to the latter by the by means of a reduction gear train transmission, and means for automatically clamping a cable or cord wound on the capstan, which clamping means are mounted on the upper part of the drum to form a self-winding head. rope maintenance.
  • Self-retaining capstans are also known, also called “self-tailing” type winches, used in particular on sailboats, and making it possible to keep a cable or rope taut while it is wound on the capstan drum. .
  • Such capstans allow the user to exercise a maneuver with one hand.
  • Self-supporting capstans often include a notched V-grooved pulley at the top of the drum.
  • Such a type of capstan is however only suitable for a given cable diameter or for a given type of fiber. Consequently, it is necessary, in particular on a sailboat, to have a large number of capstans of different sizes adapted to the different ropes used on the boat (halyards, sheets ).
  • capstans are often inconvenient to handle due to insufficient reduction in the drive kinematics of the capstan. In other cases, the manufacturing and maintenance costs are too high when the kinematics are complex.
  • the present invention aims to remedy the aforementioned drawbacks and in particular to allow a large number of different cables or ropes to pass over the same type of capstan so to reduce, in particular on a boat, the number of capstans required.
  • the invention thus relates to a capstan provided with an automatic head ensuring the self-maintenance of a rope and allowing the use without particular adjustment of a large variety of ropes having diameters of rope varying from simple to double or comprising fibers of a different nature conferring different stiffnesses.
  • Another subject of the invention is a capstan, the manufacture and use of which are improved by means of kinematics ensuring a large reduction in a small volume, this kinematics being able to be produced in a standardized modular form applicable to different sizes of capstans, which further contributes to reducing manufacturing costs.
  • the present invention also aims to improve the operation and the safety of use of the capstans.
  • a self-holding capstan of the type defined at the head of the description characterized in that the means for automatically tightening a cable or cord comprises several articulated teeth distributed at the bottom of a block which overcomes the drum and is integral with it in rotation, and springs mounted in said block to individually exert a downward pressure on each of the articulated teeth which themselves exert a pressure on the rope to pinch it on the upper end of the drum.
  • the support block of the clamping means has in its lower part a cylindrical portion whose diameter is substantially equal to that of the drive zone of the drum, and the drive teeth are guided laterally in slots made in the block.
  • the number of drive teeth can be between 4 and 8.
  • the end of the drive teeth is made narrower by an oblique chamfer defining a pressure edge.
  • the drive teeth are arranged in the block so as to define a polygon and have pressure edges arranged tangentially to a circle whose diameter is substantially smaller than that of the winding zone of the drum.
  • the drive teeth are articulated in their lower rear part around horizontal axes trapped in a groove formed in the upper part of the drum.
  • the capstan comprises a fixed casing mounted on the fixed support and enveloping the head of the capstan so as to provide protection for the rotating parts thereof, and a guide for passing the rope from the drum to the self-holding head is fixed to said fixed casing.
  • the capstan includes an ejector mounted on the casing or the guide retaining pin and arranged above the end of the drum so as to prevent the rope from continuing to rotate in the self-retaining head after an angle of predetermined rotation.
  • the ejector is mounted at a level immediately below that of the articulated drive teeth.
  • the ejector is mounted below the drive teeth at a level such that it constitutes a cam slightly lifting each tooth as it passes over the ejector, so as to exert a positive control for loosening of rope training.
  • the reduction gear train transmission comprises a planetary reduction gear comprising a central pinion integral with the input shaft, a bell-shaped planetary gear comprising a toothed crown and a pinion of output, a set of satellites cooperating with the crown and rotating around axes fixed on a planet carrier whose reverse rotation is made impossible by a set of pawls, a toothed crown formed at the bottom of the drum, at least two pinions diametrically opposite with respect to the shaft and cooperating with the output pinion and the crown toothed, and a set of pawls which make integral, in the opposite direction of the rotation of the drum, the shaft with the planetary.
  • a planetary reduction gear comprising a central pinion integral with the input shaft, a bell-shaped planetary gear comprising a toothed crown and a pinion of output, a set of satellites cooperating with the crown and rotating around axes fixed on a planet carrier whose reverse rotation is made impossible by a set of pawls, a toothe
  • the entire transmission with the exception of the diametrically opposite pinions and the toothed ring secured to the drum, constitutes a modular assembly independent of the size of the capstan mounted on the input shaft and introduced from below at the inside of the support closed at its lower part by a removable plate.
  • Figure 1 shows a general view with partial section of the invention.
  • the capstan comprises a drum 1 rotating around a base 2 by means of a roller bearing 3 which can be single or double stage.
  • a plastic washer 4 which could be replaced by a needle or ball stop of a known type allows the drum 1 to rest on the base 2 with a minimum of friction.
  • the drum 1 is driven in rotation by means of a toothed crown 5 actuated itself by means of two distance pinions 6 placed symmetrically on either side of the axis of symmetry 7 of the capstan.
  • the two pinions 6 rotate around axes 8 fixed on one side in the base 2 and on the other in a base casing 9 forming part of the base 2.
  • the pinions 6 receive their movement from an output pinion 10 of the reducer.
  • the pinion 10 is itself secured to a toothed ring 11 of a planetary 24 in the shape of a bell.
  • the sun gear 24 is driven by three satellite pinions 12a to 12c regularly distributed around the axis 7 ( Figure 8).
  • the satellites 12a to 12c mesh on a central pinion 13 secured to a vertical input shaft 14 driven by a crank or possibly by an electric or hydraulic motor.
  • the three satellites 12a to 12c rotate around three axes 15a to 15c, themselves fixed in a planet carrier 16.
  • the planet carrier 16 rotates on the lower end 17 of the axis 21 of the reduction gear. It has at its periphery teeth 18 on which spring pawls 19a, 19b of a known type are supported, fixed in the fixed casing 9 (FIG. 10).
  • the assembly of the planetary reduction gear thus formed rotates concentrically about the axis 21, guided in rotation on a roller bearing 20 or another bearing of a known type.
  • the axis 21 includes a ring gear 22 on which spring pawls 23a, 23b are fixed fixed in the body of the sun gear 24 (FIG. 9).
  • pawls 23a, 23b make the axis 21 and the sun gear 24 integral in rotation when the axis 21 is driven anticlockwise.
  • the axis 21 and the input shaft 14 are secured by a pin 26.
  • a roller bearing 25 or other bearing of a known type ensures the rotation guide of the axis 21 in the base 2.
  • the planetary gear train then acts fully, by adding its additional reduction gear and by reversing the direction of rotation, which makes it possible to obtain a new reduction ratio more geared down at the level of the drum, the latter always rotating in the correct direction (clockwise) . Its reverse rotation is made impossible by the play of the pawls 23a, 23b and 19a, 19b.
  • the assembly of the planetary reduction gear is held in a vertical position by means of a bush bearing 27 itself retained by a closing plate 28.
  • This plate 28 also ensures the maintenance in their housings of the base casing 9 of the pawls 19a, 19b (FIG. 10).
  • the automatic self-holding head consists of a block 31 which can be made of plastic in which are articulated drive teeth (30a to 30e) in variable number according to the size of the capstan, for example 4 to 8 (FIG. 3) and which can be produced, for example, by molding in aluminum or steel.
  • the block 31 is fixed to the upper part 29 of the drum 1 by screws 32 or by another known assembly means.
  • This block has in its lower part a cylindrical portion 34 whose diameter is equal to, or very close to, that of the drive zone 36 of the drum (FIG. 1).
  • the drive teeth 30a to 30e are articulated in their rear lower part around axes 35a to 35e and are guided laterally in slots in the block 31.
  • the end 37 of the teeth is made narrower by an oblique chamfer cut in the tooth so as to exert a well localized pressure on the rope and to facilitate the introduction of the latter into the self-retaining head ( Figure 5) .
  • Each tooth exerts pressure on the cord trapped between its end 37 and the upper part of the drum 29 under the effect of springs 33a to 33e ( Figures 1, 4 and 6).
  • These springs may for example have the shape of a hairpin but by having several turns placed vertically in the housings of the articulated teeth (FIGS. 4 and 6).
  • the cord wound on the active part 36 of the drum leaves the latter to enter the head by passing over a guide 38 of a known type, fixed or rotating, around an axis 39.
  • the guide 38 is fixed on a prominent part 41 of the fixed head housing 40 ( Figures 1 and 2).
  • each tooth In the rotational movement of the head, each tooth alternately climbs the rope 45 by pinching it against the face 29 of the drum, as shown in FIG. 2.
  • Each tooth 30a to 30e has, thanks to the articulation around the horizontal axes 35, a large travel travel at its end 37 so as to pinch a wide variety of rope diameters and this automatically, without manual adjustment.
  • An ejector of a known type 42 at the bottom of which the teeth 30 pass prevents the rope from continuing to rotate in the head after a sufficient angle of rotation.
  • the rope is ejected from the head ( Figures 1, 2 and 6).
  • the fixed casing 40 disposed around the self-holding head protects the rotating part of the head and supports the passage guide 38 as well as the ejector 42.
  • the latter can be fixed by the pin 39 for holding the guide 38 .
  • the housing 40 is fixed to the base 2 of the capstan by a known connection system such as screws 43 ( Figures 1 and 2).
  • the input shaft 14 carries at its upper part on a small bearing 55 which can be constituted by a small plastic tube.
  • the input shaft 14 has a greater or lesser length depending on the size of the capstan, but in all cases a modular transmission assembly of standard size can be attached to this input shaft by the axis 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)
  • Pulleys (AREA)
  • Toys (AREA)
EP90400935A 1989-04-05 1990-04-05 Selbsthaltende Winde mit gelenkig angeordneten Zähnen Withdrawn EP0391805A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8904487A FR2645518B1 (fr) 1989-04-05 1989-04-05 Cabestan a auto-maintien a dents articulees
FR8904487 1989-04-05

Publications (1)

Publication Number Publication Date
EP0391805A1 true EP0391805A1 (de) 1990-10-10

Family

ID=9380415

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90400935A Withdrawn EP0391805A1 (de) 1989-04-05 1990-04-05 Selbsthaltende Winde mit gelenkig angeordneten Zähnen

Country Status (3)

Country Link
US (1) US5088693A (de)
EP (1) EP0391805A1 (de)
FR (1) FR2645518B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0832842A1 (de) * 1996-09-30 1998-04-01 Lewmar Marine Limited Winde
EP0832843A1 (de) * 1996-09-30 1998-04-01 Lewmar Marine Limited Winde
EP0842892A1 (de) * 1996-11-18 1998-05-20 Lewmar Marine Limited Winde

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT398935B (de) * 1992-10-21 1995-02-27 Swarovski Tyrolit Schleif Sägeseildrehvorrichtung
US6047955A (en) * 1998-07-24 2000-04-11 Cavanagh; Paul D. Clamp ring for a marine winch
DE20000724U1 (de) * 2000-01-18 2001-05-31 Meyerdierks Helmut Motorwinsch

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR383514A (fr) * 1907-10-08 1908-03-11 Antoinette Soc Dispositif pour favoriser l'adhérence des cables sur les poulies
DE937085C (de) * 1950-02-04 1955-12-29 Stahlkontor Weser G M B H Verstellbare Keilriemenscheibe
FR2307760A1 (fr) * 1975-04-15 1976-11-12 Barient Co Treuil perfectionne du type a tension automatique du cable sur le tambour
DE2653317A1 (de) * 1976-11-24 1978-06-01 Schmid Hans Joerg Seilwinde
US4230306A (en) * 1978-02-21 1980-10-28 Barlow Marine Limited Self-tailing winch
GB2058000A (en) * 1979-09-18 1981-04-08 Asahi Malleable Iron Co Ltd Automatically meshing sheet winch
GB1588010A (en) * 1977-07-22 1981-04-15 Barbarossa Costr Spa Two-speed winch for nautical use
EP0066936A2 (de) * 1981-06-10 1982-12-15 Lewmar Marine Limited Selbsthaltende Winsch
FR2594089A1 (fr) * 1986-02-07 1987-08-14 Barbarossa Spa Dispositif pour l'autoregulation de l'ouverture du rea de la poulie enrouleur d'ecoute pour des treuils, notamment a usage nautique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2726062A (en) * 1953-11-02 1955-12-06 John F Sherwood Fishing reel
US2853273A (en) * 1957-05-13 1958-09-23 Thor Power Tool Co Rope drum device
US3120043A (en) * 1962-06-01 1964-02-04 Henley J Carl Self locking cleat
NL182070C (nl) * 1982-05-28 1988-01-04 Meissner Engineering B V Zelfschotende lier.
AU2410284A (en) * 1982-12-27 1984-07-17 Andersen Frode Capstanspil, navnlig til sejlbade

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR383514A (fr) * 1907-10-08 1908-03-11 Antoinette Soc Dispositif pour favoriser l'adhérence des cables sur les poulies
DE937085C (de) * 1950-02-04 1955-12-29 Stahlkontor Weser G M B H Verstellbare Keilriemenscheibe
FR2307760A1 (fr) * 1975-04-15 1976-11-12 Barient Co Treuil perfectionne du type a tension automatique du cable sur le tambour
DE2653317A1 (de) * 1976-11-24 1978-06-01 Schmid Hans Joerg Seilwinde
GB1588010A (en) * 1977-07-22 1981-04-15 Barbarossa Costr Spa Two-speed winch for nautical use
US4230306A (en) * 1978-02-21 1980-10-28 Barlow Marine Limited Self-tailing winch
GB2058000A (en) * 1979-09-18 1981-04-08 Asahi Malleable Iron Co Ltd Automatically meshing sheet winch
EP0066936A2 (de) * 1981-06-10 1982-12-15 Lewmar Marine Limited Selbsthaltende Winsch
FR2594089A1 (fr) * 1986-02-07 1987-08-14 Barbarossa Spa Dispositif pour l'autoregulation de l'ouverture du rea de la poulie enrouleur d'ecoute pour des treuils, notamment a usage nautique

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0832842A1 (de) * 1996-09-30 1998-04-01 Lewmar Marine Limited Winde
EP0832843A1 (de) * 1996-09-30 1998-04-01 Lewmar Marine Limited Winde
AU724731B2 (en) * 1996-09-30 2000-09-28 Lewmar Limited Winch
EP0842892A1 (de) * 1996-11-18 1998-05-20 Lewmar Marine Limited Winde

Also Published As

Publication number Publication date
US5088693A (en) 1992-02-18
FR2645518B1 (fr) 1991-08-16
FR2645518A1 (fr) 1990-10-12

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