EP0198261A1 - Wishbone boom - Google Patents

Wishbone boom Download PDF

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Publication number
EP0198261A1
EP0198261A1 EP86103785A EP86103785A EP0198261A1 EP 0198261 A1 EP0198261 A1 EP 0198261A1 EP 86103785 A EP86103785 A EP 86103785A EP 86103785 A EP86103785 A EP 86103785A EP 0198261 A1 EP0198261 A1 EP 0198261A1
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EP
European Patent Office
Prior art keywords
boom
clamp
mast
head
connection
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EP86103785A
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German (de)
French (fr)
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EP0198261B1 (en
Inventor
Christian Greiff
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Individual
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Individual
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Priority to AT86103785T priority Critical patent/ATE39892T1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H8/00—Sail or rigging arrangements specially adapted for water sports boards, e.g. for windsurfing or kitesurfing
    • B63H8/20—Rigging arrangements involving masts, e.g. for windsurfing
    • B63H8/22—Rigging arrangements involving masts, e.g. for windsurfing for connecting wishbones to the mast

Definitions

  • the invention relates to a boom for a sailing vehicle of the type specified in the preamble of claim 1.
  • the boom is attached to the mast of the sail or windsurfer with its forks bent outwards, usually with the help of a so-called mast mast, which is tied around the mast and the boom head.
  • the free end of the mast tamping is after the connection of the boom in a so-called clamp on one of the forks and secured by a knot.
  • a reliable and permanent connection of the boom to the mast with the help of a tamp requires a high degree of skill, material knowledge and strength. Especially inexperienced windsurfers rarely succeed in creating a permanent, firm connection with the help of a tampon. Either the connection is too loose from the beginning or a connection that is initially quite firm loosens during the course of surfing, because the rope gives in under the load and the fork boom loosens, even if the tan has been watered beforehand. Because the boom connection loosens during the course of surfing, the belly in the sail is enlarged and the sail needs to be trimmed.
  • a plastic sleeve is slid onto the mast and secured at the level of the boom to be connected with the aid of a tool.
  • a hook is attached to this sleeve, in which the boom is hung with its head.
  • the invention has for its object to provide a boom that can be quickly, easily and safely attached to and detached from the mast by anyone, and which also ensures a permanent, permanent connection to the mast, which can also be used in extreme conditions Conditions of use of the sail or windsurfer does not loosen.
  • the clamp connection of the boom to the sailing vehicle according to the invention ensures a permanent and absolutely secure fit of the boom on the mast, which does not loosen even during prolonged surfing. Since this connection does not require a great deal of effort or special skill, it can also be handled safely by everyone.
  • the clamp connection has the advantage that the mast is protected because the boom is absolutely tilt-proof on the mast. This significantly reduces the risk of the mast breaking.
  • the firm and at the same time gentle contact of the boom head to the mast can be further increased by lining the inner surface of the clamp with an adhesive coating, especially with adhesive rubber.
  • a particularly advantageous embodiment of the boom according to the invention provides for the use of a quick-action lock for the boom head designed as a clamp.
  • This quick release fastener is designed so that with its help the two clamp halves can be connected to the mast without using a tool.
  • the two clamp halves can be completely separated from one another when the quick-action lock is released, so that the boom can be removed from or attached to the mast in a simple manner.
  • the boom is to be opened completely on the mast side
  • it is provided to open and close the boom at the rear connecting piece.
  • the two halves of the clamp of the boom head are articulated via a swivel connection, for example a hinge, and the aft, separable fork connection fitting is equipped with a quick-release lock.
  • the boom head is clamped to the mast at the same time.
  • the great advantage of the aft quick-release fastener is the leverage of the two relatively long forks on the two clamp halves to be closed on the mast.
  • the inner clamp surface can, for example, have a square cross section, as a result of which these clamp surfaces are coupled tangentially to the mast.
  • the inner surface of the clamp is circular-cylindrical in such a way that the diameter of the inner surface of the clamp essentially corresponds to the outer diameter of the mast.
  • the circular cylindrical design of the inner surface of the clamp results in the best and most gentle coupling of the boom to the mast by means of the clamp-shaped boom head.
  • the boom head according to the invention is also ideally suited for converting conventional booms with rope or hook connection to the mast. For this purpose, only the original boom head has to be removed and the two forks have to be inserted and fastened in mounting holes of the clamp boom head or in corresponding adapter tubes that are attached to the head.
  • FIG. 1 shows a complete fork tree for a sailing or windsurfer, which consists of two forks 20 and 21 which are characteristic of this type of sailing vehicle and are bent outwards. Aft, the fork ends 24 and 25 are connected to one another by a connecting fitting 50, while the front fork ends 22 and 23 are each fastened in a clamp half 13 and 14 of the boom head designed as a clamp.
  • the boom head 10 is shown in detail.
  • This designed as a clamp boom head 10 consists of a tensile and compressive plastic material or a metal alloy, in particular aluminum alloy and has 13 and 14 bores in each clamp half, which run essentially in the clamp plane and into which the two Fork ends 22 and 23 are plugged in.
  • the fork ends 22 and 23 are clamped in the boom head 10 by screws, not shown.
  • the two clamp halves 13 and 14 expanded to accommodate the fork ends 22 and 23 are moved apart from one another by bending the elastic fork tubes 20 and 21 to such an extent that the split fork head 10 can be plugged onto the mast 30.
  • the eighth connecting fitting 50 can, however, also be designed in a split manner, the two fitting parts being guided together by a hinge, the pivot axis of which runs essentially perpendicular to the fork plane. By this measure, the two-part boom head 10 can be opened without any effort and hinged to the mast.
  • the axially split boom head clamp has an inner surface 12 which is essentially circular-cylindrical and the diameter of which essentially corresponds to the outer diameter of the mast 30.
  • the inner surface 12 of the clamp is additionally lined with an adhesive covering 15, which consists for example of an adhesive rubber. This adhesive rubber is used for the gentle coupling of the inner clamp surface 12 to the mast 30.
  • the clamp 30, which surrounds the mast 30 with its two halves 13 and 14, is provided with a quick-release fastener 40, with which the two clamp halves 13 and 14 can be immovably coupled to the mast 30, and which is inserted in the clamp so that it can be removed from the mast 30 when the quick-action fastener 40 is open.
  • the quick-action lock 40 can be designed in a known manner as a bayonet or as a locking pin lock. Shown in the figures The exemplary embodiment of the quick-action fastener consists of a simple screw connection which is provided in the two clamp halves opposite the fork connection.
  • a hole for a wing head screw 41 is made, which is substantially perpendicular to the clamp separating surface and is extended towards the outer edge of the clamp.
  • This enlargement or recess 19 in the clamp half 13 serves to completely accommodate the head of the wing screw 41 and to make the wing head screw accessible for easy handling.
  • a bore 18 is made in the clamp half 14 for a starting sheet.
  • a groove-like or rebate-like undercut 16, 17 is provided for better guidance of the clamp halves when connecting to the mast 30 or for stabilizing the clamp clamp half connection thereby achieved.
  • the two clamp halves 13 and 14 of the boom head 10 can by a Schwenkver Binding be articulated and the boom is hinged at the aft end by a two-piece fork connection fitting 50.
  • This aft-separable boom is placed around the mast 30 with the forks 20 and 21 pivoted open, and the clamp 40 is clamped to the mast 30 by closing and locking the aft fork connection fitting 50.
  • the eighth fork connection fitting 50 is provided with a quick release lock.

Abstract

1. Wishbone boom for a sailing boat, particularly for a sail or windsurfer, consisting of wishbones being connected with each other at one end-side, of a wisbone head (10) which encompasses a mast (30), can be squeezed against it and consists of two clip halves one of which is each attached to the other end-side of the wishbone, and of a locking device (40), characterized in that both clip halves (13, 14) are continuously and completely separated from each other along the middle axis of the wishbone boom and that the locking together of the two clip halves (13, 14) with the help of the locking device (40) causes the squeezing of the wishbone boom head (10) to the mast (30).

Description

Die Erfindung betrifft einen Gabelbaum für ein Segelfahrzeug der im Oberbegriff des Anspruchs 1 angegebenen Art.The invention relates to a boom for a sailing vehicle of the type specified in the preamble of claim 1.

Die Befestigung des Gabelbaumes mit seinen nach außen gebogenen Gabeln am Mast des Segel- oder Windsurfers erfolgt üblicherweise mit Hilfe eines sogenannten Masttampens, der um den Mast und den Gabelbaumkopf gebunden wird. Das freie Ende des Masttampens wird nach dem Anbinden des Gabelbaums in einer sogenannten Belegklemme an einer der Gabeln festgelegt und durch einen Knoten gesichert.The boom is attached to the mast of the sail or windsurfer with its forks bent outwards, usually with the help of a so-called mast mast, which is tied around the mast and the boom head. The free end of the mast tamping is after the connection of the boom in a so-called clamp on one of the forks and secured by a knot.

Eine zuverlässige und dauerhafte Anbindung des Gabelbaums am Mast mit Hilfe eines Tampens erfordert ein hohes Maß an Fertigkeit, Materialkenntnis und Kraft. Vor allem weniger geübten Windsurfern gelingt es nur selten, eine dauerhaft feste Verbindung mit Hilfe eines Tampens zu realisieren. Entweder ist die Verbindung von Anfang an zu locker oder eine anfangs recht feste Verbindung lockert sich im Lauf des Surfens, weil der Tampen unter der Belastung nachgibt und der Gabelbaum sich deshalb lockert, und zwar auch dann,wenn der Tanpen vorher gewässert wurde. Dadurch, daß sich die Gabelbaumanbindung im Lauf des Surfens lockert, vergrößert sich der Bauch im Segel und ein Nachtrimmen des Segels wird erforderlich. Infolge der sich lockernden Verbindung vergrößert sich außerdem das vertikale Spiel der Gabeln und der Gabelbaum gewinnt Spiel um seine Längsachse, wodurch eine exakte Segelführung erschwert wird. Außerdem wird der Mast durch das Kippspiel des Gabelbaums stark belastet und auf die Dauer beschädigt. Schließlich wird die unzureichende Anbindung des Gabelbaums am Mast soweit aufgelockert sein, daß der Gabelbaum beim Segelaufholen am Mast entlang verrutscht und eine neue Anbindung des Tampens sowie ein Neutrimmen des Segels erforderlich wird.A reliable and permanent connection of the boom to the mast with the help of a tamp requires a high degree of skill, material knowledge and strength. Especially inexperienced windsurfers rarely succeed in creating a permanent, firm connection with the help of a tampon. Either the connection is too loose from the beginning or a connection that is initially quite firm loosens during the course of surfing, because the rope gives in under the load and the fork boom loosens, even if the tan has been watered beforehand. Because the boom connection loosens during the course of surfing, the belly in the sail is enlarged and the sail needs to be trimmed. As a result of the loosening of the connection, the vertical play of the forks also increases and the boom gains play about its longitudinal axis, which makes precise sailing difficult. In addition, the mast is heavily stressed by the tilting play of the boom and is permanently damaged. Finally, the inadequate connection of the boom to the mast will be loosened to such an extent that the boom will slide along the mast when catching up on the sail and a new connection of the tamping and a new trimming of the sail will be necessary.

Da auf dem Mast zudem der gesamte Druck des vom Wind gespannten Segels liegt, besteht immer die Gefahr, daß der Tampen bricht. Da nun ein Segel- oder Windsurfer ohne Mast-Gabelbaumverbindung nicht segelfähig ist, besteht die Gefahr, daß der Surfer mit seinem Brett in Seenot gerät, da auch dann, wenn ein Ersatztampen mitgeführt wird, die Herstellung einer Mast-Gabelbaumverbindung bei starkem Wind und Seegang ausgesprochen schwierig und nicht selten erfolglos ist. Ein weiterer Nachteil der Tampenverbindung liegt darin, daß sie unter Umständen ausgesprochen schwierig zu lösen ist. Vor allem dann, wenn sich die Verbindung im Lauf des Surfen gelockert hat, ist so viel Zug auf den Abschlußknoten gekommen, daß dieser nicht mehr gelöst werden kann. Dieses Problem stellt sich auch bei einer mangelhaft halternden Belegklemme.Since the entire pressure of the sail stretched by the wind also lies on the mast, there is always the risk that the rope breaks. Now that a sail or windsurfer is not capable of sailing without a mast-boom connection, there is a risk that the surfer will be in distress with his board, since even if a spare rope is carried, the establishment of a mast-boom connection in strong winds and seas is extremely difficult and often unsuccessful. Another disadvantage of the rope connection is that it can be extremely difficult to solve under certain circumstances. Especially when the connection has loosened in the course of surfing, there has been so much pull on the terminating node that it can no longer be released. This problem also arises in the case of a poorly holding document clamp.

Bei einer weiteren Befestigungsart des Gabelbaums am Mast ist es vorgesehen, eine Kunststoffhülse auf den Mast aufzuschieben und in Höhe des anzubindenen Gabelbaums mit Hilfe eines Werkzeugs zu sichern. An dieser Hülse ist ein Haken befestigt, in welchem der Gabelbaum mit seinem Kopf eingehängt wird.In another type of attachment of the boom to the mast, a plastic sleeve is slid onto the mast and secured at the level of the boom to be connected with the aid of a tool. A hook is attached to this sleeve, in which the boom is hung with its head.

Das Hauptproblem bei dieser Hakenanbindung besteht darin, daß der Gabelbaum um seine Längsachse so viel Spiel hat, daß eine exakte Segelführung zumindest stark erschwert ist. Außerdem belastet diese Verkantung des Gabelbaums den Mast. Schließlich ist auch zu berücksichtigen, daß die gesamte Belastung durch den Druck des Segels und durch die Verkantung des Gabelbaums auf dem Haken liegt. Die Bruchgefahr für den Haken ist dementsprechend hoch. Zur Höhenverstellung des Gabelbaums am Mast ist zudem immer ein Werkzeug erforderlich.The main problem with this hook connection is that the boom has so much play around its longitudinal axis that exact sail guidance is at least very difficult. This tilting of the boom also stresses the mast. Finally, it should also be taken into account that the entire load due to the pressure of the sail and the tilting of the boom is on the hook. The risk of the hook breaking is correspondingly high. For A height adjustment of the boom on the mast always requires a tool.

Angesichts dieses Standes der Technik liegt der Erfindung die Aufgabe zugrunde, einen Gabelbaum zu schaffen, der schnell, leicht und sicher von jedermann am Mast befestigt und wieder gelöst werden kann, und der darüberhinaus eine dauerhaft feste Anbindung am Mast gewährleistet, die sich auch bei extremen Einsatzbedingungen des Segel- oder Windsurfers nicht lockert.In view of this state of the art, the invention has for its object to provide a boom that can be quickly, easily and safely attached to and detached from the mast by anyone, and which also ensures a permanent, permanent connection to the mast, which can also be used in extreme conditions Conditions of use of the sail or windsurfer does not loosen.

Diese Aufgabe wird in Übereinstimmung mit dem kennzeichnenden Teil des Anspruchs 1 gelöst.This object is achieved in accordance with the characterizing part of claim 1.

Die erfindungsgemäße Klemmschellenanbindung des Gabelbaums am Segelfahrzeug gewährleistet einen dauerhaften und absolut sicheren Sitz des Gabelbaums am Mast, der sich auch bei längerem Surfbetrieb nicht lockert. Da diese Anbindung weder einen großen Kraftaufwand noch eine besondere Geschicklichkeit erfordert, ist sie auch von jedermann sicher handhabbar.The clamp connection of the boom to the sailing vehicle according to the invention ensures a permanent and absolutely secure fit of the boom on the mast, which does not loosen even during prolonged surfing. Since this connection does not require a great deal of effort or special skill, it can also be handled safely by everyone.

Wegen der zuverlässigen Anbindung wird die Manövrierbarkeit des Segel- oder Windsurfers entscheidend verbessert, was die Sicherheit beim Betrieb dieses Segelfahrzeugs vor allen Dingen bei starkem Wind und Seegang entscheidend erhöht. So entfällt auch ein Nachtrimmen des Segels wegen gelockerter Mast-Gabelbaumverbindung. Außerdem hat die Schellenanbindung den Vorteil, daß der Mast geschont wird, da der Gabelbaum absolut verkantungsfest am Mast sitzt. Die Bruchgefahr des Mastes ist dadurch entscheidend verringert.Because of the reliable connection, the maneuverability of the sail or wind surfer is significantly improved, which significantly increases the safety when operating this sail vehicle, especially in strong winds and seas. There is also no need to re-trim the sail due to the loosened mast-boom connection. In addition, the clamp connection has the advantage that the mast is protected because the boom is absolutely tilt-proof on the mast. This significantly reduces the risk of the mast breaking.

Nicht zuletzt wird durch die Verwendung deserfindungsgemäßen Gabelbaums der gesamte Aufbau, Umbau und Abbau des Surfgeräts entscheidend erleichtert und verkürzt. Ein weiterer Vorteil der Klemmschellenverbindung ist es, daß sich der Gabelbaum in seiner Höhe leicht, schnell und präzise verschieben und wieder festsetzen läßt.Last but not least, the entire construction, modification and removal of the surfing device is decisively facilitated and shortened through the use of the boom according to the invention. Another advantage of the clamp connection is that the height of the boom can be easily, quickly and precisely moved and fixed again.

Der feste und dabei gleichzeitig schonende Kontakt des Gabelbaumkopfes zum Mast läßt sich dadurch noch erhöhen, daß die Schelleninnenfläche mit einem Haftbelag, vor allem mit Haftgummi ausgekleidet wird.The firm and at the same time gentle contact of the boom head to the mast can be further increased by lining the inner surface of the clamp with an adhesive coating, especially with adhesive rubber.

Eine besonders vorteilhafte Ausführungsform des erfindungsgemäßen Gabelbaums sieht die Verwendung eines Schnellspannverschlusses für den als Schelle ausgebildeten Gabelbaumkopf vor. Dieser Schnellspannverschluß ist so ausgelegt, daß mit seiner Hilfe die beiden Schellenhälften ohne Verwendung eines Werkzeuges am Mast zusammenschließbar sind. Andererseits sind die beiden Schellenhälften bei gelöstem Schnellspannverschluß vollständig voneinander trennbar, so daß in einfacher Weise der Gabelbaum vom Mast abziehbar oder auf diesen aufsteckbar ist.A particularly advantageous embodiment of the boom according to the invention provides for the use of a quick-action lock for the boom head designed as a clamp. This quick release fastener is designed so that with its help the two clamp halves can be connected to the mast without using a tool. On the other hand, the two clamp halves can be completely separated from one another when the quick-action lock is released, so that the boom can be removed from or attached to the mast in a simple manner.

Während bei dem eben genannten Ausführungsbeispiel der Gabelbaum mastseitig vollständig zu öffnen ist, ist es bei einer weiteren vorteilhaften Ausführungsform vorgesehen, den Gabelbaum am hinteren Verbindungsstück zu öffnen und zu schließen. Zu diesem Zweck sind die beiden Schellenhälften des Gabelbaumkopfes über eine Schwenkverbindung,z.B.einem Scharnier,zusammengelenkt und der achtere, trennbare Gabelverbindungsbeschlag ist mit einem Schnellspannverschluß ausgerüstet. Beim Zusammenschließen des achteren Schnellspannverschlusses wird gleichzeitig der Gabelbaumkopf am Mast angeklemmt. Der große Vorteil des achtern angelenkten Schnellspannverschlusses besteht in der Hebelwirkung der beiden relativ langen Gabeln auf die beiden zu schließenden Klemmschellenhälften am Mast.While in the embodiment just mentioned the boom is to be opened completely on the mast side, in a further advantageous embodiment it is provided to open and close the boom at the rear connecting piece. For this purpose, the two halves of the clamp of the boom head are articulated via a swivel connection, for example a hinge, and the aft, separable fork connection fitting is equipped with a quick-release lock. When together When closing the aft quick-release fastener, the boom head is clamped to the mast at the same time. The great advantage of the aft quick-release fastener is the leverage of the two relatively long forks on the two clamp halves to be closed on the mast.

Die Schelleninnenfläche kann beispielsweise einen quadratischen Querschnitt aufweisen, wodurch diese Schellenflächen tängential an den Mast angekoppelt werden. Vorteilhafterweise ist die Schelleninnenfläche jedoch kreiszylindrisch ausgebildet und zwar derart, daß der Durchmesser der Schelleninnenfläche im wesentlichen dem Außendurchmesser des Mastes entspricht. Die kreiszylindrische Ausgestaltung der Schelleninnenfläche ergibt die beste und gleichzeitig schonendste Ankopplung des Gabelbaums am Mast mittels des schellenförmigen Gabelbaumkopfes.The inner clamp surface can, for example, have a square cross section, as a result of which these clamp surfaces are coupled tangentially to the mast. Advantageously, however, the inner surface of the clamp is circular-cylindrical in such a way that the diameter of the inner surface of the clamp essentially corresponds to the outer diameter of the mast. The circular cylindrical design of the inner surface of the clamp results in the best and most gentle coupling of the boom to the mast by means of the clamp-shaped boom head.

Zur besseren Führung der Schelle ist es vor allem bei von achtern durchgeführtem Schließvorgang vorgesehen, die beiden Schellenhälften im Bereich der Schellentrennfläche mit nut- oder falzartigen Hintergriffen zu versehen.For better guidance of the clamp, it is provided, especially when the closing process is carried out aft, to provide the two clamp halves in the region of the clamp separating surface with groove-like or rabbet-like undercuts.

Der erfindungsgemäße Gabelbaumkopf eignet sich auch bestens zur Umrüstung herkömmlicher Gabelbäume mit Tampen- oder Hakenänbindung an den Mast. Zu diesem Zweck ist lediglich der ursprüngliche Gabelbaumkopf zu entfernen und die beiden Gabeln sind in Aufnahmebohrungen des Schellen-Gabelbaumkopfes oder in entsprechende Adapterrohre, die am Kopf befestigt sind, einzustecken und zu befestigen.The boom head according to the invention is also ideally suited for converting conventional booms with rope or hook connection to the mast. For this purpose, only the original boom head has to be removed and the two forks have to be inserted and fastened in mounting holes of the clamp boom head or in corresponding adapter tubes that are attached to the head.

Die Erfindung soll nachfolgend anhand einer Zeichnung näher erläutert werden; in der Zeichnung zeigt:

  • Fig. 1 einen erfindungsgemäßen Gabelbaum in Aufsicht;
  • Fig. 2 den Gabelbaumkopf des Gabelbaums von Fig. 1 in Aufsicht und
  • Fig. 3 eine Seitenansicht des Gabelbaumkopfes von Fig. 2.
The invention will be explained in more detail with reference to a drawing; in the drawing shows:
  • Figure 1 shows a boom according to the invention in supervision.
  • Fig. 2 the boom head of the boom of Fig. 1 in supervision and
  • 3 shows a side view of the boom head from FIG. 2.

In Fig. 1 ist ein vollständiger.Gabelbaum für einen Segel- oder Windsurfer dargestellt, der aus zwei für diese Segelfahrzeuggattung charakteristisch nach außen gebogenen Gabeln 20 und 21 besteht. Achtern sind die Gabelenden 24 und 25 durch einen Verbindungsbeschlag 50 miteinander verbunden, während die vorderen Gabelenden 22 und 23 jeweils in einer Schellenhälfte 13 und 14 des als Schelle ausgebildeten Gabelbaumkopfes befestigt sind.1 shows a complete fork tree for a sailing or windsurfer, which consists of two forks 20 and 21 which are characteristic of this type of sailing vehicle and are bent outwards. Aft, the fork ends 24 and 25 are connected to one another by a connecting fitting 50, while the front fork ends 22 and 23 are each fastened in a clamp half 13 and 14 of the boom head designed as a clamp.

In Fig. 2 ist der Gabelbaumkopf 10 im Detail dargestellt. Dieser als Schelle ausgebildete Gabelbaumkopf 10 besteht aus einem zug- und druckbelastbaren Kunststoffmaterial oder aus einer Metall-Legierung, insbesondere Aluminium- legi.erung und weist in jeder Klemmschellenhälfte 13 und 14 Bohrungen auf, die im wesentlichen in der Schellenebene verlaufen und in die die beiden Gabelenden 22 und 23 eingesteckt sind. Die Gabelenden 22 und 23 sind über nicht dargestellte Schrauben im Gabelbaumkopf 10 festgeklemmt.2 the boom head 10 is shown in detail. This designed as a clamp boom head 10 consists of a tensile and compressive plastic material or a metal alloy, in particular aluminum alloy and has 13 and 14 bores in each clamp half, which run essentially in the clamp plane and into which the two Fork ends 22 and 23 are plugged in. The fork ends 22 and 23 are clamped in the boom head 10 by screws, not shown.

Die beiden zur Aufnahme der Gabelenden 22 und 23 backenartig erweiterten Schellenhälften 13 und 14 werden unter Aufbiegen der elastischen Gabelrohre 20 und 21 soweit voneinander wegbewegt, daß der geteilte Gabelkopf 10 auf den Mast 30 aufgesteckt werden kann. Der achtere Verbindungsbeschlag 50 kann aber auch geteilt ausgeführt sein, wobei die beiden Beschlagteile durch ein Scharnier zusammengelenkt sind, dessen Schwenkachse im wesentlichen senkrecht zur Gabelebene verläuft. Durch diese Maßnahme läßt sich der zweigeteilte Gabelbaumkopf 10 ohne irgendwelchen Kraftaufwand öffnen und an den Mast anlenken.The two clamp halves 13 and 14 expanded to accommodate the fork ends 22 and 23 are moved apart from one another by bending the elastic fork tubes 20 and 21 to such an extent that the split fork head 10 can be plugged onto the mast 30. The eighth connecting fitting 50 can, however, also be designed in a split manner, the two fitting parts being guided together by a hinge, the pivot axis of which runs essentially perpendicular to the fork plane. By this measure, the two-part boom head 10 can be opened without any effort and hinged to the mast.

Die axial geteilte Gabelbaumkopf-Schelle weist eine Innenfläche 12 auf, die im wesentlichen kreiszylindrisch ausgebildet ist, und deren Durchmesser im wesentlichen dem Außendurchmesser des Mastes 30 entspricht. Die Schelleninnenfläche 12 ist zusätzlich mit einem Haftbelag 15 ausgekleidet, der beispielsweise aus einem Haftgummi besteht. Dieser Haftgummi dient der schonenden Ankopplung der Schelleninnenfläche 12 an den Mast 30. Die den Mast 30 mit ihren beiden Hälften 13 und 14 umgreifende Schelle ist mit einem Schnellspannverschluß 40 versehen, mit dem die beiden Schellenhälften 13 und 14 unverrückbar an den Mast 30 ankoppelbar sind, und der so in der Schelle eingesetzt ist, daß diese bei geöffnetem Schnellspannverschluß 40 vom Mast 30 abziehbar ist. Der Schnellspannverschluß 40 kann in bekannter Weise als Bajonett-oder als Spannzapfenverschluß ausgebildet sein. Im in den Figuren dargestellten Ausführungsbeispiel besteht der Schnellspannverschluß aus einer einfachen Schraubverbindung, die in den beiden Schellenhälften dem Gabelanschluß gegenüberliegend vorgesehen ist.The axially split boom head clamp has an inner surface 12 which is essentially circular-cylindrical and the diameter of which essentially corresponds to the outer diameter of the mast 30. The inner surface 12 of the clamp is additionally lined with an adhesive covering 15, which consists for example of an adhesive rubber. This adhesive rubber is used for the gentle coupling of the inner clamp surface 12 to the mast 30. The clamp 30, which surrounds the mast 30 with its two halves 13 and 14, is provided with a quick-release fastener 40, with which the two clamp halves 13 and 14 can be immovably coupled to the mast 30, and which is inserted in the clamp so that it can be removed from the mast 30 when the quick-action fastener 40 is open. The quick-action lock 40 can be designed in a known manner as a bayonet or as a locking pin lock. Shown in the figures The exemplary embodiment of the quick-action fastener consists of a simple screw connection which is provided in the two clamp halves opposite the fork connection.

In der einen Klemmschellenhälfte 13 ist eine Bohrung für eine Flügelkopfschraube 41 eingebracht, die im wesentlichen senkrecht zur Schellentrennfläche verläuft und zum Schellenaußenrand hin erweitert ist. Diese Erweiterung bzw. Ausnehmung 19 in der Klemmschellenhälfte 13-dient zur vollständigen Aufnahme des Kopfes der Flügelschraube 41 und dazu, die Flügelkopfschraube zur einfachen Handhabung zugänglich zu machen.In one clamp half 13 a hole for a wing head screw 41 is made, which is substantially perpendicular to the clamp separating surface and is extended towards the outer edge of the clamp. This enlargement or recess 19 in the clamp half 13 serves to completely accommodate the head of the wing screw 41 and to make the wing head screw accessible for easy handling.

In der gegenüberliegenden Klemmschellenhälfte 14ist eine entsprechende mit einem Gewinde versehene Bohrung 42 eingebracht, in welche die Flügelschraube 41 zum Anklemmen der Schelle an den Mast 30 einschraubbar ist.In the opposite clamp half 14 there is a corresponding threaded bore 42 into which the wing screw 41 can be screwed to clamp the clamp to the mast 30.

Ebenfalls im vorderen, backenförmig erweiterten Schellenende ist in der Schellenhälfte 14 eine Bohrung 18 für eine Startschot eingebracht.Also in the front, cheek-widened clamp end, a bore 18 is made in the clamp half 14 for a starting sheet.

Am gabelseitigen Schellenende ist im Bereich der Schellentrennfläche in den beiden Schellenhälften 13 und 14 ein nut- oder falzartiger Hintergriff 16, 17 zur besseren Führung der Schellenhälften beim Anklemmen an den Mast 30 bzw. zur Stabilisierung der dadurch erreichten Klemmschellenhälftenverbindung vorgesehen. Anstelle des in den Fig. 1 bis 3 dargestellten kopfseitig vollständig trennbaren Gabelbaums, können die beiden Schellenhälften 13 und 14 des Gabelbaumkopfes 10 durch eine Schwenkverbindung zusammengelenkt sein und der Gabelbaum ist am achteren Ende durch einen entsprechend zweiteilig gestaltenten Gabelverbindungsbeschlag 50 aufklappbar. Dieser achtern trennbare Gabelbaum wird mit aufgeschwenkten Gabeln 20 und 21 um den Mast 30 herumgelegt und die Schelle 40 wird dadurch an den Mast 30 angeklemmt, daß der achtere Gabelverbindungsbeschlag 50 geschlossen und verriegelt wird. Zu diesem Zweck ist der achtere Gabelverbindungsbeschlagt 50 mit einem Schnellspannverschluß versehen. Der Vorteil dieser Ausführungsform liegt auf der Hand und besteht darin, daß die beiden Gabelarme 20 und 21 als Hebelarme dienen, die das Anklemmen der Gabelbaumkopfschelle 40 am Mast kräftemäßig begünstigt, so daß dieser Gabelbaum von jedermann problemfrei an den Mast angeschlossen werden kann.At the fork-side clamp end, in the area of the clamp separating surface in the two clamp halves 13 and 14, a groove-like or rebate-like undercut 16, 17 is provided for better guidance of the clamp halves when connecting to the mast 30 or for stabilizing the clamp clamp half connection thereby achieved. Instead of the fully separable boom shown in FIGS. 1 to 3, the two clamp halves 13 and 14 of the boom head 10 can by a Schwenkver Binding be articulated and the boom is hinged at the aft end by a two-piece fork connection fitting 50. This aft-separable boom is placed around the mast 30 with the forks 20 and 21 pivoted open, and the clamp 40 is clamped to the mast 30 by closing and locking the aft fork connection fitting 50. For this purpose, the eighth fork connection fitting 50 is provided with a quick release lock. The advantage of this embodiment is obvious and is that the two fork arms 20 and 21 serve as lever arms, which favorably clamps the boom head clamp 40 on the mast, so that this boom can be connected to the mast by anyone without any problems.

Claims (7)

1. Gabelbaum für ein Segelfahrzeug, insbesondere für einen Segel- oder Windsurfer, bestehend aus an beiden Endseiten miteinander verbundenen Gabeln und einem Gabelbaumkopf, der an einem Mast des Segelfahrzeugs angelenkt ist,
gekennzeichnet durch
einen Gabelbaumkopf (10), der als axial geteilte Schelle (13,14) mit einer Innenfläche (12) ausgebildet ist, die so bemessen ist, daß sie den Mast (30) umgreifend an diesem anklemmbar ist, wobei an jeder Schellenhälfte (13,14) jeweils ein Gabelende (22,23) befestigt ist.1. boom for a sailing vehicle, in particular for a sailing or windsurfer, consisting of forks connected to one another on both end sides and a boom head which is articulated on a mast of the sailing vehicle,
marked by
a boom head (10), the axially divided clamp (13,14) with an inner surface (12) forms, which is dimensioned such that it can be clamped around the mast (30), with a fork end (22, 23) being attached to each clamp half (13, 14). 2. Gabelbaum nach Anspruch 1, gekennzeichnet durch
einen die Schelleninnenfläche (12) auskleidenden Haftbelag (15), vor allem Haftgummi.2. boom according to claim 1, characterized by
an adhesive lining (15) lining the inner surface of the clamp (12), especially adhesive rubber. 3. Gabelbaum nach Anspruch 1 oder 2, gekennzeichnet durch
einen an der Schelle (13,14) ausgebildeten Schnellspannverschluß (40), mit dem die beiden Schellenhälften (13;14) zum Anklemmen des Gabelbaumkopfes (10) am Mast (30) zusammenschließbar und zum Abziehen des Gabelbaumkopfes (10) vom Mast (30) voneinander trennbar sind.3. boom according to claim 1 or 2, characterized by
a quick-action fastener (40) formed on the clamp (13, 14), with which the two clamp halves (13; 14) can be connected to clamp the boom head (10) to the mast (30) and to pull the boom head (10) off the mast (30 ) are separable. 4. Gabelbaum nach Anspruch 1 oder 2, gekennzeichnet durch
eine scharnierartige Schwenkverbindung der beiden Schellenhälften (13;14) und durch einen trennbaren achteren Gabelverbindungsbeschlag (50), der mit einem Schnellspannverschluß ausgerüstet und unter gleichzeitigem Anklemmen des Gabelbaumkopfes (10) am Mast (30) zusammenschließbar ist.4. boom according to claim 1 or 2, characterized by
a hinge-like pivot connection of the two clamp halves (13; 14) and by a separable rear fork connection fitting (50), which is equipped with a quick-release lock and can be connected to the mast (30) while simultaneously clamping the boom head (10). 5. Gabelbaum nach einem der Ansprüche 1 bis 4, gekennzeichnet durch
eine im wesentlichen kreiszylindrisch ausgebildete Schelleninnenfläche (12), deren Durchmesser im wesentlichen dem Außendurchmesser des Mastes (30) entspricht.5. boom according to one of claims 1 to 4, characterized by
an essentially circular cylindrical inner surface (12), the diameter of which corresponds essentially to the outer diameter of the mast (30). 6. Gabelbaum nach einem der Ansprüche 1 bis 5, gekennzeichnet durch
nut- oder falzartige Hintergriffe (16,17), die an den beiden Schellenhälften (13; 14) im Bereich der Schellentrennfläche ausgebildet sind.6. boom according to one of claims 1 to 5, characterized by
groove-like or rabbet-like rear grips (16, 17) which are formed on the two clamp halves (13; 14) in the region of the clamp separating surface. 7. Gabelbaumkopf nach Anspruch 1, gekennzeichnet durch Aufnahmebohrungen oder Rohransätze in den beiden Schellenhälften (13,14) zum Anschließen der Gabeln eines herkömmlichen Gabelbaumes.7. boom head according to claim 1, characterized by receiving bores or pipe lugs in the two clamp halves (13, 14) for connecting the forks of a conventional boom.
EP86103785A 1985-04-19 1986-03-20 Wishbone boom Expired EP0198261B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86103785T ATE39892T1 (en) 1985-04-19 1986-03-20 FORK TREE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3514265 1985-04-19
DE19853514265 DE3514265A1 (en) 1985-04-19 1985-04-19 FORK TREE

Publications (2)

Publication Number Publication Date
EP0198261A1 true EP0198261A1 (en) 1986-10-22
EP0198261B1 EP0198261B1 (en) 1989-01-11

Family

ID=6268660

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86103785A Expired EP0198261B1 (en) 1985-04-19 1986-03-20 Wishbone boom

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Country Link
EP (1) EP0198261B1 (en)
AT (1) ATE39892T1 (en)
DE (2) DE3514265A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0263783A1 (en) * 1986-10-09 1988-04-13 Hansruedi Naepflin Connecting device for a wishbone to the mast of a rig
GB2232140A (en) * 1989-05-20 1990-12-05 Peter Stuart Spencer Wishbone boom mast collar for a sailboard

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4213825A1 (en) * 1992-04-28 1993-11-04 Klaus Steinig Boom head for sailing surfboard - is divided into two parts, which are locked together by two closing elements

Citations (6)

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Publication number Priority date Publication date Assignee Title
FR1332686A (en) * 1962-06-06 1963-07-19 Lorba Connection for tubular structural elements
FR1462459A (en) * 1965-11-05 1966-04-15 Diela Soc D Expl Des Ets Device for assembling two elongated elements perpendicular to each other
DE2855556A1 (en) * 1978-12-22 1980-07-03 Christian Gruemann Arrangement for securing wishbone boom to sail-board mast - has hinged links at boom spar front ends, flanged to form mast-clamping collar
DE2912868A1 (en) * 1979-03-30 1980-10-09 Biggesee Boots Service Gmbh & Boom-securing fitting on sailing surfboard - is used where sail is stretched between mast and boom, and consists of fork fitting grooves in sleeve around mast, with sockets for boom
DE3032631A1 (en) * 1979-10-05 1982-04-08 geb. Nowak Renate 5650 Solingen Felsberg Clamping block for sheet of sail-board rigging - has clamping wedge with single fitting screw
US4448142A (en) * 1981-11-02 1984-05-15 The Coleman Company, Inc. Boom assembly for sailboard

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3123197A1 (en) * 1981-06-11 1982-12-30 Mistral Windsurfing AG, 8303 Nürensdorf, Zürich DEVICE FOR SUPPORTING THE FORK TREE FOR WINDSURFBOARDS

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1332686A (en) * 1962-06-06 1963-07-19 Lorba Connection for tubular structural elements
FR1462459A (en) * 1965-11-05 1966-04-15 Diela Soc D Expl Des Ets Device for assembling two elongated elements perpendicular to each other
DE2855556A1 (en) * 1978-12-22 1980-07-03 Christian Gruemann Arrangement for securing wishbone boom to sail-board mast - has hinged links at boom spar front ends, flanged to form mast-clamping collar
DE2912868A1 (en) * 1979-03-30 1980-10-09 Biggesee Boots Service Gmbh & Boom-securing fitting on sailing surfboard - is used where sail is stretched between mast and boom, and consists of fork fitting grooves in sleeve around mast, with sockets for boom
DE3032631A1 (en) * 1979-10-05 1982-04-08 geb. Nowak Renate 5650 Solingen Felsberg Clamping block for sheet of sail-board rigging - has clamping wedge with single fitting screw
US4448142A (en) * 1981-11-02 1984-05-15 The Coleman Company, Inc. Boom assembly for sailboard

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0263783A1 (en) * 1986-10-09 1988-04-13 Hansruedi Naepflin Connecting device for a wishbone to the mast of a rig
GB2232140A (en) * 1989-05-20 1990-12-05 Peter Stuart Spencer Wishbone boom mast collar for a sailboard

Also Published As

Publication number Publication date
DE3661709D1 (en) 1989-02-16
DE3514265A1 (en) 1986-10-23
EP0198261B1 (en) 1989-01-11
ATE39892T1 (en) 1989-01-15

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