DK152980B

DK152980B - WINDSURFER BOM AND BOOM HEADS THEREOF

Info

Publication number: DK152980B
Application number: DK323985A
Authority: DK
Inventors: Henrik Bartholin; Niels Bartholin
Original assignee: Henrik Bartholin; Niels Bartholin
Priority date: 1985-07-17
Filing date: 1985-07-17
Publication date: 1988-06-06
Also published as: WO1987000503A1; DK323985A; DK152980C; AU6221586A; DK323985D0; EP0230465B1; DE3666205D1; EP0230465A1

Description

, DK 152980 B, DK 152980 B

Opfindelsen angår en windsurferbom og et bomhoved dertil, hvor windsurferbommen består af to bomgrene, som i den ene ende - evt. aftageligt - er fastgjort til et bomhoved, bestående af to klembakker, som er ud-5 formet til anlæg mod en mast, og som er indbyrdes forbundet ved et led med samme bevægelighed som en hængselsforbindelse. Dette forbindelsesled kan f.eks. være udifbrmet som en hængselsforbindelse eller et fjedrende stykke metal eller plast.The invention relates to a windsurfer boom and a boom head thereto, in which the windsurfer boom consists of two booms, which at one end - possibly. removable - is attached to a boom head, consisting of two clamping trays, which are designed to abut a mast and which are interconnected by a joint with the same motility as a hinge connection. This link can be e.g. be embodied as a hinge joint or a resilient piece of metal or plastic.

1010

En sådan windsurferbom med tilhørende bomhoved er kendt fra PCT-offentliggørelsesskrift nr. W0 79/01078. I dette kendte arrangement er bomhovedets forbindelsesled anbragt i den ende af klembakkerne, der vender bort fra 15 den del af b'omhovedet, der er fastgjort til eller beregnet til fastggørelse til bomgrenene. Når denne kendte windsurferbom er monteret, er ledet således placeret ved den side af masten, som vender bort fra bomgrenene.Such a windsurfer boom with associated boom head is known from PCT Publication No. W0 79/01078. In this known arrangement, the connecting head of the boom head is disposed at the end of the clamping jaws which face away from the portion of the b head attached to or intended for attachment to the boom branches. Thus, when this known windsurfer boom is mounted, the guide is placed at the side of the mast which faces away from the boom branches.

20 Når bommen belastes, vil den - eftersom sejlet er udspændt mellem masten og den modsat bomhovedet beliggende ende af bommen - udøve et træk, der mod bomgrenenes fjeder-virkning søger at føre den udragende bomende ind mod masten. Herved vil bomgrenene blive presset udefter 25 (deres krumning forøges), hvorved klembakkernes tryk mod masten formindskes. En ulempe ved nævnte kendte teknik er således, at styrken af bommens fastgørelse til masten forringes, netop når en forøget vindbelastning medfører stigende krav til fastgørelsens styrke.20 When the boom is loaded, it will - since the sail is clamped between the mast and the opposite end of the boom head - will exert a pull which, against the spring action of the boom branches, seeks to bring the protruding boom into the mast. In this way, the boom branches will be pressed outwards (their curvature increases), thereby reducing the pressure of the clamping jaws on the mast. A disadvantage of the prior art is that the strength of the boom attachment to the mast is degraded precisely when an increased wind load causes increasing demands on the strength of the attachment.

3030

Denne ulempe afhjælpes ifølge opfindelsen ved, at bomhovedets forbindelsesled er placeret i samme ende af klembakkerne som fastgørelsesorganerne for bom-grenene .This disadvantage is remedied according to the invention in that the connecting head of the boom head is located at the same end of the clamping trays as the securing means for the boom branches.

DK 152980 BDK 152980 B

2 Når bommen er monteret på masten, vil forbindelsesledet befinde sig på samme side af masten som den frie bomende, og belastningen vil derfor (jvf. ovenstående forklaring vedr. den kendte teknik) i modsætning til forholdene ved ^ ovennævnte kendte teknik forøge klembakkernes tryk mod masten. Desuden er mekaniske låsemekanismer o.lign. ifølge op findelsen overflødiggjort.2 When the boom is mounted on the mast, the connecting link will be on the same side of the mast as the free boom, and the load will therefore (cf. the above explanation of the prior art), contrary to the conditions of the above known technique, increase the pressure of the clamping jaws against mast. In addition, mechanical locking mechanisms and the like. according to the invention, redundant.

Opfindelsen beskrives mere detaljeret i det følgende “j Q under henvisning til tegningen, hvor fig. 1 viser monteringen af bommen og sejlet på en mast, 15 fig. 2 viser den kendte bomhovedkonstruktion, set ovenfra, fig. 3 viser bomhovedet ifølge opfindelsen, ligeledes set ovenfra.The invention is described in more detail below with reference to the drawing, in which: FIG. 1 shows the mounting of the boom and sail on a mast; FIG. 2 is a plan view of the known boom head structure; FIG. 3 shows the boom head according to the invention, also viewed from above.

2020

Figur 1Figure 1

Riggen består af en mast (5), som er placeret i en løbegang i forkanten af et sejl (7). I løbegangen i sejlet 25 (7) findes en åbning (8) til fastgørelse af en bom (9) til masten (5). Bommen (9) består af et mod masten anliggende bomhoved (11) og to hertil fastgjorte bom-grene (1 og 2), som bagest samles i et beslag (10), hvortil sejlet (7) er fastgjort. Bommen (9) går således 30 rundt om masten (5) og sejlet (7).The rig consists of a mast (5) which is placed in a tread at the leading edge of a sail (7). An opening (8) for securing a boom (9) to the mast (5) is provided in the barrel in the sail 25 (7). The boom (9) consists of a boom head (11) abutting the mast and two boom branches (1 and 2) attached thereto, which at the rear are assembled in a bracket (10) to which the sail (7) is attached. The boom (9) thus goes around the mast (5) and the sail (7).

33

DK 152980BDK 152980B

Figur 2Figure 2

Bommen ifølge PCT-offentliggørelsesskrift nr.The boom according to PCT publication no.

WO 79/01078 består af to bomgrene (1 og 2), 5 som er forbundet med hver sin klembakke (3 og 4). Mellem klembakkerne (3 og 4) er en mast (5) fastklemt. Foran masten (5) er klembakkerne (3 og 4) forbundet ved et hængselled (6).WO 79/01078 consists of two booms (1 and 2), 5 which are connected to each clamping tray (3 and 4). A mast (5) is clamped between the clamping trays (3 and 4). In front of the mast (5) the clamping trays (3 and 4) are connected by a hinge joint (6).

Ί0 Figur 3Ί0 Figure 3

Bommen ifølge opfindelsen består af to bomgrene (1 og 2), som er forbundet til hver sin klembakke (3 og 4). Mellem klembakkerne (3 og 4) er en Ί5 mast (5) fastklemt. Bag masten (5) er klembakkerne (3 og 4) forbundet ved et led (6) med samme bevægelighed som et hængsel.The boom according to the invention consists of two booms (1 and 2) which are connected to each clamping tray (3 and 4). A emb5 mast (5) is clamped between the clamping trays (3 and 4). Behind the mast (5) the clamping trays (3 and 4) are connected by a link (6) with the same movement as a hinge.

Claims

1. Windsurferbom bestående af to bomgrene (1 og 2), som i den ene ende - evt. aftageligt - er fastgjort til et bomhoved, bestående af to klembakker (3 og 4), som er udformet til anlæg mod en mast (5), og som er indbyrdes 5 forbundet ved et led (6) med samme bevægelighed som en hængselsforbindelse, fortrinsvis et hængsel eller et fjedrende stykke metal eller plast, kendetegnet v e d , at forbindelsesledet (6), er placeret i samme ende af klembakkerne (3 og 4) som fastgørelsesorganerne Ί0 for bomgrenene (1 og 2), således at forbindelsesledet (6) efter montering af bommen (9) på masten (5) er placeret på samme side af masten (5) som den frie bomende. j1. Windsurfer boom consisting of two booms (1 and 2), which at one end - possibly. removable - is attached to a boom head, consisting of two clamping trays (3 and 4), which are designed for abutment against a mast (5) and which are interconnected 5 by a link (6) with the same movement as a hinge connection, preferably a hinge or resilient piece of metal or plastic, characterized in that the connecting link (6) is located at the same end of the clamping jaws (3 and 4) as the fastening means Ί0 for the boom branches (1 and 2), so that the connecting link (6) after mounting of the boom (9) on the mast (5) is located on the same side of the mast (5) as the free boom. j

^ 2. Bomhoved til brug ved fremstilling af windsurferbom men ifølge krav 1, hvilket bomhoved består af to klembakker (3 og 4), som er udformet til anlæg mod en mast (5), og som er indbyrdes forbundet ved et led (6) med samme bevægelighed som en hængsels forbindelse, fortrinsvis et 20 hængsel eller et fjedrende stykke metal eller plast, samt er forsynet med fastgørelsesorganer for to bomgrene (1 og 2), kendetegnet ved, at forbindelsesledet (6), er placeret i samme ende af klembakkerne (3 og 4) som fastgørelsesorganerne for bomgrenene (1 og 2).2. Boom head for use in the manufacture of windsurfer booms but according to claim 1, said boom head consisting of two clamping trays (3 and 4) designed for abutment against a mast (5) and interconnected by a link (6) having the same motility as a hinge connection, preferably a hinge or resilient piece of metal or plastic, and provided with attachment means for two beams (1 and 2), characterized in that the connecting link (6) is located at the same end of the clamping trays (3 and 4) as the fasteners for the boom branches (1 and 2).