EP3405385A1

EP3405385A1 - Rig for a surfboard

Info

Publication number: EP3405385A1
Application number: EP16822154.7A
Authority: EP
Inventors: Robert Frank
Original assignee: Robert Frank & Co KG GmbH
Current assignee: Robert Frank & Co KG GmbH
Priority date: 2016-01-19
Filing date: 2016-12-20
Publication date: 2018-11-28
Anticipated expiration: 2036-12-20
Also published as: EP3405385B1; WO2017125233A1; DE102016000500A1

Abstract

The invention relates to a rig for a surfboard (8), having the following features among others: - the mast (5) comprises a mast lower part (5a), a mast upper part (5b), and a mast connection section (5c) which connects the mast lower part (5a) to the mast upper part (5b), - a sleeve (25a) through which the mast connection section (5c) passes is provided in the region of the mast connection section (5c), said sleeve (25a) being arranged on the mast connection section (5c) in a rotatable manner relative to the mast connection section (5c), - in the assembled state of the fork tree (11), the fork tree head (33) is secured to the sleeve (25a), and - in the assembled state of the fork tree (11), the fork tree (11) can be pivoted about the mast connection section (5c) of the mast (5) together with the fork tree/mast securing device (35) and the sleeve (25a) arranged in the mast receiving channel (37) of the holding body (35b).

Description

Rig for a surfboard

The invention relates to a rig for a surfboard according to the preamble of claim 1.

Surfing continues to be one of the most popular recreational sports.

To facilitate the entire handling a number of IMPROVE ^¬ conclusions are proposed over the last decades.

One of the issues when surfing is always the connection and attachment of a boom, usually a so-called boom head on a mast.

These fastening devices are sometimes structurally complex and therefore costly.

Thus, for example, has been proposed according to DE 20 2007 018 172 Ul, a boom head piece with a To provide a mast sections enclosing clamping sleeve, which can be brought from an open position by means of a clamping lever and a clamping means in a closed ^¬ position. In the closed position, at least a portion of the mast is encompassed by the clamping sleeve. The clamping sleeve has there ^¬ a hingedly connected to a sleeve head ^¬ ne, at least partially bending elastic trained ^¬ te flap assembly with a hook, which is engageable with a clamping lever attached to the clamping means and together with the sleeve head the mast outer circumference in sections encompassing position. As already mentioned, such a design comprises a large number of individual parts which have to be assembled to form a structurally complex overall fastening mechanism.

Equally complicated, for example, a corresponding boom-mast fastening device, as is known from DE 84 07 643 Ul. From this Vorveröffentli ^¬ chung a highly complex boom-mast connection device is known to be known, which requires a large number of individual elements. According to a variant to be reduced by means of a dial, the distance between the mast and the boom head, whereby the sail held by the boom can be tightened additionally.

On the other hand, simpler constructed boom-mast fastening devices can be found in DE 20 2009 013 093 U1. The boom head includes for this purpose a ^¬ telabschnitt with it opposite starting and divergent to each other arranged Gabelkopfanschluss- pieces, wherein the boom center section can be supported on ei ^¬ ner semi-cylindrical shell, which is provided with a bracket supporting on the boom. However, here is no tensioning device for the boom and thus at least indirectly refer to the stretched over the boom sails.

A generic rigging of a mast-boom connection for standing sailboards has become known from EP 0 320 950 AI. The boom is frictionally connected to the mast. For this purpose, the fork ^¬ tree carrier in the untensioned state to a predetermined inner circumference, so that it can be pushed onto the mast without any special effort. Subsequently, the fork-beam carrier can be brought into frictional connection with the mast by generating a hoop tension. Between the mast and the boom support there is provided a mast diameter adapter having at least two effective diameter adjustment regions between the mast and the boom support. A diam ^¬ seranpassungsbereich has together with the mast or mast portion of a first diameter and the other to ^¬ together with the mast or pole portion of a second diameter corresponding to an outer periphery of the Innenum- catch of the boom on the carrier in the unstressed state. By swinging the boom from an initial parallel position to the mast by about 90 ° is thus effected by a wedge-shaped in cross-section training a connected to the boom head hook 24 so that the desired high Verpresskräfte between the boom head and mast are generated. As a result, the boom and the mast form a solid, mutually unverdrehbare A ^{¬ unit} . In contrast, it is an object of the present invention to provide an improved rig with an improved boom-mast fastening device.

The object is achieved according to the invention specified in the ^¬ claim 1 features. Advantageous embodiments of the invention are specified in the subclaims.

The present invention provides a rig with a simply constructed boom-mast connection, in particular for a rig for surfboards, which is not only easy to produce in terms of production technology, comprises few parts and offers an optimal possibility, a boom, and in particular a fork ^¬ Tree head freely pivotable on a mast, ie preferably anchored without play. In this case, the invention also opens up the possibility of generating these high fastening and clamping forces with minimal Kör ^¬ pereinsatz.

In a preferred variant of the invention, for example, a sleeve which is rotatably arranged here opposite the mast is provided on the mast fastening section, on which the boom head, that is to say a leading boom ^front , is to be fastened. Here engages example, a verse- with a passage opening hene mast holder, which has a correspondingly matched the drehba ^¬ ren sleeve passage opening. The patch on the mast sleeve protrudes through an ent ^¬ speaking passage in the mast holder, the the sleeve completely encloses or preferably also ge ^¬ slits can be formed, wherein the slot is then aligned similar to the course of the sail of a rig.

The boom can, for example, so created ^¬ the that he is positioned in an approximately more than 120 ° against the later sailing position relative to the mast. The Gabelbaumfrontbo- gen (boom head) can be attached (to ^¬ particular a belt) to the mast at a Fixed To ^¬ supply section in this position then with the aid of a clamping element. In this position, the boom head within the tensioning element has clearance to the actual mast or to the actual sleeve positioned on the respective mast mounting portion. At ^¬ closing the boom can be pivoted to the mentioned about 120 ° or more in its rearward position, the mast end then pivots through relatively through the boom. The boom is still held by the mentioned tensioning element, for example in the form of a strap. This ultimately creates a tightening of this tensioning element and thus a strong and firm connection between the boom head and Masentr- insurance generated, namely by jamming with the rotatable mast sleeve mounted on the mast.

In a likewise preferred modification, the sleeve rotatably mounted on the mast can be designed as a threaded sleeve with an external thread, which interacts with an internal thread formed in the passage opening of the mast holder. In other words, preferably the passage opening is completely around ^¬ imaging (closed) with the mast bracket Innengewin- de on the rotatable threaded sleeve (which is rotatably ^¬ bar arranged on the mast) screwed.

Also in this variant is again with respect to the length exactly defined clamping element, as mentioned in ^¬ example, in the form of the webbing, provided over which the boom is connected to the preferably in the manner of a plastic material fitting ^¬ formed mast holder. The attachment of the boom to the mast bracket is also here as explained above by the pivoting of the boom in its Funktionsstel ^¬ ment. The above-explained preferred embodiment ^¬ form allows but complementary, that by turning the threaded sleeve here a height adjustment of the attachment point between the boom head and mast is always feasible.

Finally, however, the mast itself may be specific ausgestal- tet in an inventive development, for example in the form of an inherently bo ^¬ genförmig curved mast with a straight-running boom mounting portion on which the fork ^¬ tree mast support means for example in the form of said mast holder is pivotally mounted or can be arranged.

Also in this regard, reference is made to the following statements.

Overall, this can create a very cheap fork ^¬ tree-mast connection and this preferably ^s.einem from home, so permanent arcuate gestalte ^¬ th mast made of plastic or carbon fiber reinforced Plastic can exist. Did this mast over a substantial part of its total length a drop-shaped profile with trailing groove can here in connection with the inventive boom-mast Halteeinrich- processing a sail directly at the trailing end of the teardrop-shaped profile of the mast mounted and held ^¬ the so Optimum utilization of the wind while avoiding turbulence can be achieved with the boom-mast connection according to the invention.

The invention will be explained in more detail with reference to drawings. In detail:

Figure 1: a schematic side view of a

Rig of a surfboard;

Figure 2a: a schematic side view of an ^inventive he ^¬ designed divisible

Mastes;

Figure 2b is a similar view to Figure 2a in disassembled form of the mast;

Figure 2c: an enlarged section of a Teilbe ^¬ rich of the mast showing a

Sleeve;

FIG. 3a

to 3d: different cross sections through the

at different heights of the mast; a modified cross-sectional view through the mast at the level of the boom mounting section; a schematic plan view of a Ga ^¬ belbaum-mast holding device 35, about which a boom relative to the mast is rotatably fastened, in the fixing position; a representation comparable to Figure 4, in which the boom is pivoted from its functional position under the mast end forward in its released position; a schematic side view in which the boom is pivoted in its disengagement ^¬ position (released position) in front of the mast; a schematic excerpt cross- ^sectional view (parallel to the mast) to illustrate the formation of the lateral abutment portions of the mast holder for conditioning the prop head; a corresponding representation to Figure 7a with respect to the central contact portion of the mast holder for conditioning of the boom head; Figure 8 is a schematic rear view ei ^¬ nes modified embodiment with a height adjustment device for the boom head.

Before discussing the inventive design of the fork ^¬ tree head attachment, the schematic structure of a basic be ^¬ vorzugt in connection with the boom mast Befes- will be explained in the mast or mast training actuating device used initially with reference to FIGS.

In Figure 1, a rig with a sail 1 is shown in a schematic side view. In this case, the sail is attached to his luff 3 to a mast 5, which in turn is freely rotatably and pivotally arranged on a mast foot joint 7 (universal joint 7) on a only partially indicated sailboard 8 on all sides. Such a sail 1 is usually at its hinte ^¬ ren end 9, so at its so-called clew 9, on a sail 1 surrounding the boom 11, ie at the end of the boom IIa, trimmed. From the schematic side view of Figure 1 is also seen that the sail in the longitudinal direction of the mast offset from the luff 3 to the leech 4 (or partially to the lower berth 2 b) extending and sewn into the sail 1 batten pockets 2 a, in the corresponding slats 2 b are usually used for stiffening the sail. The aforementioned mast 5 can basically consist of a straight mast. In the present invention, however, a permanent curved mast is preferably 5 is set ^¬. The bend at the upper end of the mast 5 is übli ^¬ cherweise even stronger than in the lower portion of the mast 5. In other words, the mast is so ^{¬ at} least partially, and preferably curved at least towards its upper end or more curved. The curvature can also be referred to simply as crescent-shaped or sickle-like, although conventional sickles usually have a much greater curvature than the mast 5 shown in side view in Figure 1. This ultimately allows a larger sail area, without the height of the sail are increased got to. This can also ^{sicherge ¬} provides that the holding force against the wind pressure does not increase significantly.

By the aforementioned trim at the rear end of the sail of the aforementioned mast is - regardless of whether it is so fundamentally ^¬ additionally designed running straight or even slightly curved from home, permanent arc - increasing slightly by the initiated sail trimming even at least in the upper area further bent.

Usually, a corresponding recess la of a sail 1 is in a part of wavelength range of the mast 5 at which the leading end of the boom 33 is attached to the mast 5 is provided so that the leading end of the boom here preferably (as will be explained subsequently ^¬ least indirectly) on free-standing mast can be attached. It is already mentioned at this point that the mast 5 in the mentioned attachment region, in which the boom head is preferably indirectly attached to the mast 5, has a straight section. DIE ser straight fastening portion 105 to the mast is not only provided when the mast is straight as a whole, but even if (as stated be ^¬ vorzugt shown in Figure 1) of the mast in its substantial longitudinal extension of home, So it is permanently curved.

FIG. 2 a shows a schematic side view of the mast 5 in side view without the associated sail and without a boom, in a preferred variant. From this variant it will be seen that the mast 5 is ultimately divided into three sections, NaEM ^¬ Lich in a so-called mast base 5a having a length 5'a, in a so-called mast upper part 5b with a length 5'b and in a the mast base 5a and the mast top 5b connecting mast connection section 5c with a length 5'c. This mast connection section 5c can also be firmly connected to either the master base 5a or the mast top 5b and / or formed, preferably formed in one piece before ^¬ . In the illustrated exemplary example, the mast-connecting portion 5c is an integral part of the mast base member 5a, as can be seen from the schematic ^¬ schematically side view in FIG 2b. Because in Figure 2b, the mast 5 is reproduced in its decomposed form.

The aforementioned mast connection part 5c at the same time forms the so-called. Forklift head Befestigungsab ^{¬ section} 105, at which a later still explained Ga- browhead of a boom can be attached and held.

For this purpose, the mast upper part 5b has a channel-shaped receiving opening 5d which, in the exemplary embodiment shown, can be designed as a round bore or blind bore. Here, the preferably in cross-section cylindrical mast connecting portion 5c is inserted into the lower end of the mast upper part 5b, preferably plugged limit stop, until both parts are verbun ^¬ with each other. At this point, reference is briefly made in advance to Figure 2c, in the detail, the lower end of the upper mast 5b, the underlying underlying upper end of the mast lower part 5a and the mast connecting part 5c therebetween are shown, on which a rotary body 25 opposite the mast is arranged rotatable or pivotable and held, which will be discussed in more detail ^¬ sere. The thus formed and thereby dismantled mast 5 is ultimately held firmly bound together by the wound-up and trimmed sail 1 with its components. 3d with reference to FIG 3a, 3b, 3c and FIG different cross-sections along the lines ILA Ila, IIb-IIb, IIc-IIc and IId-IId are wiederge ^¬ give in Figure 2a. It can be seen that the actual mast 5 has a deviating from the circular shape profiling, with an at least approximately drop-shaped or drop-like cross-section. Through this in the Cross-section devoted teardrop shape of the mast 5 on sei ^¬ ner leading side 15 partially circular generally convex designed with a semi-circular or semicircular in cross-section, ie preferably semi-cylindrical portion 19a, which then nachlauf to his nachlauf ^¬ the end 17 in an increasingly ver ^¬ in cross-section Transits section 19b, in the trailing end of which an embossment 21 ^{ausgestalte ¬} te groove 22 is introduced. However, the arched shape 19a in the leading section 15 of the teardrop-shaped mast profile can be designed in wide ranges with any desired radius or with any radius that changes as desired. Aerodynamic shapes are preferably realized.

It can be seen from the cross-sectional illustration according to FIG. 3b that this cross-sectional representation preferably has the greatest transverse and longitudinal extent, that is to say at the level of the front end areas of the upper upper part of the mast and the lower part of the mast. With ^{¬ on} their words, the upper end of the mast lower part 5a and the lower end of the mast upper part 5b respectively to ^¬ adjoins the mast connecting portion 5c on the usually largest longitudinal and transverse extent, so once in the direction of the sail 1 or in Transverse direction to it. At the top end of the mast, that is to say at the so-called mast top 5e, this mast cross-section is again markedly smaller. Similarly, the mast lower part 5a may be formed from its mast connecting portion 5c to the mast foot at least by a small amount with a mast cross-section that tapers slowly or in sections, as indicated by FIG. 3d. However, this can also be dispensed with, so that the fattening Terteil over its entire length has a more or less constant cross-section, but may be provided to its mast base but also with an increasingly larger cross-section. Here are any modifications possible.

The cross-sectional illustration according to FIG 3c shows that the mast-connecting portion 5c in turn a cylindrical or hollow cylindrical shape having ^¬ or may have. In general, a cross-sectional shape is preferred here, which allows a body allowing a rotation or pivoting to be placed here, which can then be rotated or pivoted about this fastening section 105.

On the basis of the schematic cross-sectional representation according to FIG. 3e, as an alternative to the circular cross-sectional view according to FIG. 3c, it is shown that other cross-sections are possible for the boom-mounting section 105, also in deviation from the circular shape. Axially symmetrical cross-sectional shapes are preferably re ^¬ alisiert. Referring to Figure 4e is shown that in ^¬ a more square cross-sectional shape may be used with appropriately rounded corners of play, so that a patch here sleeve or corresponding cuff or retaining jaw-shaped contact portions 39 on this example, rounded edges or corners of such a cross-section provided boom head mounting portion 105 can support. This also allows a backlash-free as possible Rota ^¬ tion of the sleeve 25 to the boom-Befestigungsab ^{¬ section} 105 can be realized. Further extent beliebi ^¬ ge modifications are possible. In the mentioned, the mast in its entire length (with the exception of the length of the mast connecting portion 5c) formed groove 22, the luff 3 of the sail 1 by means of a thickened approach in the longitudinal direction of the groove 22 is inserted and thereby securely anchored to the mast 5 become. In this case, the mentioned recess la comes to Lie ^¬ 3 of the sail 1 on the trailing side 17 of the mast at the level of the mast connection portion 5c.

Such a mast is preferably made of plastic Herge ^¬ provides that is sufficiently stable and thereby at least still slightly elastically deformable in order to trim a corresponding sail can. Preferably, the mast consists of a CFRP material, ie carbon fiber plastic or carbon fiber reinforced plastic. Especially this embodiment allows that the mast according to the invention can be designed from home in an at least slightly curved, ie sickle-shaped or sickle-like design with permanent curvature, whereby substantial advantages of the invention can be realized.

As can be seen from the side view according to FIG 2a and 2b, the described mast 5 is preferably wide curved, ie abschnittswei ^¬ se formed small curved over its length at least, so that a si ^¬ chelförmige or crescent-like shape is obtained. In other words, the mast from its foot to its upper mast top at least over its essential longitudinal extension sections arcuate or at least slightly arcuate designed, preferably continuous ^¬ Lich arcuate, in particular to his Foot end still a straight section can be provided. But even in the case in which the mast from home (ie permanently) is arcuately curved or arc-shaped curved sections, the so-called mast connection portion 5c, which ultimately forms a mounting portion 105, straight duri ^¬ fend, that is formed without bending. This opens up the possibility that here a pivoting body in the form of the so-called boom-mast holding device 35 with a receiving bore 37 or a receiving channel 37 can be placed on the mounting portion 105, so that the boom mast holding device 35 due to the straight extending mast connection portion 105 can be rotated or pivoted about this mast connection portion 105 around. The resulting benefits will be discussed later.

As already mentioned, a ver ^¬ größerter section of the mast connecting portion 5c and the adjoining mast lower part 5a and the mast upper part 5b is shown in a perspective view with reference to Figure 2c.

From this it can already be seen that on the mast lower part 5a connecting the mast top part 5b mast connecting portion 5c a drehba ^¬ rer, in particular at least in an angular range around the mast 5 freely rotatable rotating body 25 attached, in particular plugged , The length of this pivot body 25 preferably has a dimension which is at least slightly shorter than the distance D between the upper front or boundary side 5 "a of the mast lower part 5a and the downwards This distance D results when the mast is plugged together with its two parts 5a and 5b according to the illustration according to Figure 2a, whereby the torsion body 25 is about the axis of the mast connecting part 5c At the same time, the pivoting body 25 is held in the axial direction more or less immovably stop-limited (apart from a possibly provided small game).

In the preferred embodiment according to FIGS. 1 to 3d, the mast 5, ie at least the mast connecting section 5c, projects through the receiving bore 5d passing through the rotary body 25, wherein the mentioned rotary body 25 preferably protrudes in the manner of a sleeve 25a or as will be shown later Type of threaded sleeve 25b may be formed. The sleeve-shaped rotary body 25 mentioned here is configured with its receiving bore 5d as well as the mast connecting section 5c passing through it straight, ie not arcuate, so that here the mentioned desired rotation or rotary or pivoting movement of the swivel body 25 compared to Mast or the mast axis is possible. In other words, the inner diameter of the receiving bore 5b of the swivel body 25 is preferably at least ge ^¬ slightly larger than the outer diameter of the mast in this mounting region, ie at least slightly larger than the outer diameter of the mast connection ^¬ section 5c. However, the seat should be as free of play as possible. Subsequently, with reference to further figures on a erfin ^¬ tion proper fastening of the boom on the mast gegan ^¬ gene. In Figure 4, a fragmentary Querschnittsdar ^¬ position by the mast 5 in the height of the mast connecting portion 5c is shown, immediately above the front boom end, which is nachfol ^¬ quietly also referred to as the boom head 33 or boom facebow 33rd In this case, the variant according to Figures 4 and 5 relates to a first embodiment of a possible boom-mast attachment. According to this embodiment, the boom-mast fastening and / or holding device comprises a boom-mast holding device 35, which preferably consists of plastic. In particular, this boom mast holding device 35 is made in the form of a one-piece plastic part 35a. This boom-mast holding device 35 is hereinafter also referred to as a boom-mast holding device 35 in part.

This boom-mast holding device 35 with a holding body 35b has a mast receiving opening 37. In other words, the mast 5 shown in Figure 1 extends at least in the cross-sectional view of Figure 4 perpendicular to the plane E. In unloaded starting position, ie in particular without wind, the mast 5 runs in the dot-dash line in Figure 4 symmetry or center plane S and is thereby bent from his lower mast foot joint 7 to its overhead mast top 8 usually backwards, ie to its rearward or trailing end 17. The illustrated boom-mast-holding device 35 is designed cuff, haltebacken- or sleeve-shaped and includes at least two opposite holding portions 39, which in the assembled state ultimately at least indirectly surround the mast 5 extending through the mast receiving opening 37 in the embodiment shown. The mast 5 is therefore encompassed indirectly, because on the mast 5 here in the region of the mast connecting portion 5c of the aforementioned rotary body 25 plugged in the form of a sleeve 25a and is freely rotatable here. The sleeve 25a is shown in the side view of Figure 2c. In this case, the arrangement according to FIG. 4 can be such that the jaw, sleeve or sleeve-shaped holding sections 39 are not circumferentially closed, but end on their trailing side 17 at a distance from one another, preferably on both sides to the plane of symmetry S, whereby here a trailing distance or Slot 41 is formed. On the leading side 15, the boom-mast holding device 35 in the cross-section shown in Figure 4 transverse to the central axis 5 'of the mast 5 (at least Be ^¬ rich mast receiving opening 37) T- or π-shaped or double-flighted or double wing-like designed Next to a middle boom installation section 43, adjoining lateral boom installation sections 44a and 44b are formed.

The middle boom abutment portion 43 can beispiels-, a length (in the plane E) transverse to the Sym ^¬ S metrieebene have, which is in the order of the diameter of the mast receiving opening 37th For example, over 40%, in particular over 50%, 60%, 70%, 80%, 90%, 100%, 110%, 120%, 130% or 140% of the diameter of the mast receiving opening 47 are preferably suitable. On the other hand, this width or length of the central boom installation section 43 should be shorter than 150% of the diameter of the mast receiving opening 17, thus in particular shorter than 140%, 130%, 120%, 110%, 100%, 90%, 80%. , 70%, 60% or less than 50% of the diameter of the mast receiving opening 37. In a corresponding order of magnitude, the respective length of the lateral boom-bearing sections 44a, 44b be formed from ^¬ symmetrically ge ^¬ genüber to the symmetry plane S the central The boom section 43 are aligned slightly trailing, thus strongly diverge each other. The angle between the sloping in the trailing direction abutment edge 44a, 44b of the corresponding boom section and a parallel to the mast axis 5 '(ie at least in the mounting region of the boom or the mast axis 5' of the mast connecting portion 5c) and one perpendicular to Sym ^¬ metry plane S extending plane El is at least approximately designed according to the course of the boom. Such an angle can vary in this range, usually between 10 ° to 60 °, in particular 20 ° to 40 °, etc. There are no restrictions in this respect.

In this case, the mentioned two lateral boom-Anlageabschnitte 44 a, 44 b may also be designed slightly convex to its leading end, according to the Ver ^¬ running and the shape of the boom front arch 33, which is often referred to as the boom head 33. Finally, it can also be seen from the illustration in Figure 4 that a clamping element 49 is provided still, in the illustrated embodiment in the form of a closed circumferential ge ^¬ webbing 49a. Here comes every possible embodiment for a continuous tensioning strap 49 in question, which is as inextensible as possible, that is not elastic and can absorb high tensile forces.

In the illustrated embodiment, the Gurtschlaufe 49 encloses with predetermined defined length the boom once on the left side of the plane of symmetry S and once right side of the plane of symmetry S, to then each in an upper and a lower plane around the outer circumference of the baking, cuff or beispielswei - se sleeve-shaped Mastanlageabschnittes 39 of the fork ^¬ tree-mast holding device 35 to encompass.

In FIG. 4, the boom 11 with its boom front bow 33 is shown in a tensioned position and fixed to the fastening section 105 of the mast 5. In this position, the two side boom side arc side sections 33a and 33b at least partially abut the corresponding leading contact sections in the region of the trailing outer wall section in the region of the side armature abutment sections 44a and 44b. In this position - as will be discussed below - the leading Gabelbaumfrontbo ^¬ gene middle section 33 c is lifted at its trailing side of a corresponding central boom-section 43 of the support body 35 a of the boom mast holding device 35 to form a distance A. AI is the length of the distance between ^¬ tween the middle of the boom front arch-Mittenabschnit- 33c and the center of the mast receiving opening 37. The importance of the distance A or the length of the measure AI will be discussed later. In the illustration according to FIG. 4, for example, the relative position of the boom or boom head to the boom-mast holding device 35 is shown, wherein especially under wind load (in FIG. 4 coming from the right) the sail, for example, bulges to the left and thereby the whole Mast 5 and its central axis 5 'is rotated clockwise so that the indicated in Figure 4 teardrop-shaped profiling of the mast base 5a (and also the mast shell 5b) are rotated in the illustration of Figure 4 in the clockwise direction to the left. At the end of the profile is also dotted ^¬ draws, which position takes the running from there sail 1 a ^¬ . Already from this it can be seen that there is an optimal contour between profiled mast and subsequent sail, about which optimal (turbulence-free or low turbulence) propulsive forces can be generated.

Referring to Figure 5, reference is made to Figure 4, the La ^¬ ge of the boom or the boom front arch shown before the boom is firmly locked to a mast.

According to FIG. 6, the side view of the boom is pivoted away from its functional position shown in FIG. 1 (ie, before disengagement on the clew, ie on the end of the fork) under the mast base 5 of the mast 1 into a leading position. In this initial situation prior to trimming, therefore, the two boom front arc side portions 33a and 33b are lifted from the corresponding side boom engaging portions 44a, 44b of the boom mast holder 35 so that only the boom front arc center portion 33c is attached to a corresponding center boom engaging portion But can not be necessary. Because in this starting position of the boom front arch center portion 33c comes closer to the center 5 'of the mast receiving opening 37 and thus of the mast 5 to lie, so that the aforementioned strap 49, for example, the circumferentially closed webbing 49a is no longer under tension, but only rotates loosely as shown in FIG. In this position, therefore, the boom 11, which passes through the corresponding winding of the belt ^¬ band 49a, easily rotatable, ie prob ^¬ lemlos to a transverse to the central axis 5a of the mast 5 axis extending in or approximately in the sign ^¬ level e runs.

The distance between the center of the Gabelbaumvorbogen- central portion 33c to the center 5 'of the Mastaufnahme- opening 17 (and thus to the center of the mast 5) is designated by the reference numeral A2. This dimension A2 is clearly smaller, ie shorter than the longitudinal dimension AI in FIG. 4.

For fixed fixation of the boom 11 to the mast 5 then ultimately the boom 11 from its position shown in Figure 6 (in which the entire boom 11 is leading in front of the mast against its final functional position) in a lateral view according to Figure 6 in the counterclockwise direction along the Arrow 41 within the tensioning element 49 (webbing 49a) ver ^{¬ be} pivoted until its end of the boom IIa is in the position shown in Figure 1 and dashed lines in Figure 6 indicated functional position. During this pivotal movement about its the Gabelbaumfrontbogen- middle portion 33a passing through in the longitudinal direction of pivoting X then run on the two boom front arc side portions 33a and 33b on the seitli ^¬ chen boom-abutting portions 44a and 44b of the boom-mast holder 35, thereby the boom front bow center section 33 c is lifted from the corresponding ^¬ the middle boom-conditioning section 43. As a result, the tensioning element 49 is also preferably entrained and tensioned in the form of the webbing 49a. Since the length of the webbing is exactly defi ^¬ defined 49a that as ^¬ dergegebene clamping position can be reached final in Figures 1 and 4, but only under extreme initiation of clamping forces to the clamping band 49, the optimum fixing of the Gabelbau- mes 11 , That is, the boom head 33 on the aforementioned rotary body 25, realized here in the form of the sleeve 25a, which is held on the corresponding portion 5c of the mast 5 as possible without play, but twisted or pivoted. It can also be seen from FIG. 4 that now the distance AI between the center of the boom front bow center section 33a and the center of the mast receiving opening 37 has increased markedly with respect to the length of the distance A2 according to FIG the clamping band 49, the desired high clamping forces are generated. The mentioned clamping member 49 preferably in the form of the clamping element 49 or the webbing 49a extent fulfills the function ei ^¬ ner boom retainer 149th Important and interesting in this context is that with the illustrated fastening device of the boom head 33 can be attached to the rotating body 25 here in the form of said sleeve 25a at different locations, so in un ^¬ different height position. Because the fastening device always acts between the boom head 33 and sleeve. Can be achieved relatively with respect to the mast 5 25a by the different buildin ^¬ actuating spot at different heights of the rotary body 25 in particular in the form of the sleeve so that a different fixing at different height position of the boom head. The longer the sleeve 25a, the larger is the available fixing area or the available fixing point for the boom head 33.

As can be seen on the basis 7a of figure since ^¬ union boom-abutting portions 44a, 44b in the vertical cross-sectional view (perpendicular through the Zeichenebe- ne according to FIG 4 or 5) ^¬ rule formed correspondingly easily an upper and a lower edge 53 is concave Zvi whereby the respective beam-like boom front arc side portions 33a, 33b can be rotated and engaged well in these concave side boom engaging portions 44a, 44b. Accordingly, the middle boom-conditioning section could be designed. According to the sectional illustration according to FIG. 7b, this section is only partially recessed with respect to an upper and lower edge 53 and does not have to run exactly concave, but instead can only be designed in the manner of a recess 52 having a flat bottom 54. In the illustrated embodiment, preferably using a slotted sleeve, the corresponding holding jaws 39 can enclose the preferably sleeve-shaped rotary body 25 on the corresponding plant sections, wherein the generated high clamping forces the boom front arch and thus the entire boom in the front area on this boom mast -Halteeinrichtung 35 fixed or largely fixed to the rotary body 25 is fixed, which in turn can pivot about the mast connection portion 5 c or rotate. At least in a sufficiently large Winkelbe ^¬ rich. In this case, the mast holder is located at least at its leading and partly in its lateral surface portions on the outer circumference of the preferably sleeve-shaped pivot body 25 at. At the same time can be brought by the strap of the boom with its rear end of the boom in the corresponding optimum height where the end of the sail can be trimmed. For a pivoting of the boom in the webbing 49a is quite possible. Through the entire holder thus results in a free or largely free Ver ^¬ pivoting of the boom with the sleeve-shaped Ver-rotating body 25 around the mast 5 around, the sleeve-shaped Ver-rotating body 25 tes even in the longitudinal direction of the mast between the mast lower part 5a and the Mast top 5b quasi axially immovable held or centered.

It is also shown with reference to Figure 5 in deviation from Figure 4 that the boom-mast support means 35 no jaw or sleeve-shaped holding o- must have the fixing sections 39, but that the boom mast support means 35 and slot-free may be formed closed to form a corresponding receiving opening 37 for the explained preferably sleeve-shaped rotary body 25, which in turn is then rotatably mounted on the mast.

According to the variant described, the mast holder 15 with its jaw-shaped, sleeve-shaped or sleeve-shaped sections sits directly on the rotary body 25, preferably the mentioned sleeve 25a, thus embraces the rotary body 25. In this case, the rotary body 25 is of an inner diameter provided the rotary body 25 passing through the receiving bore, which, as mentioned, at least slightly larger than the outer diameter of the mast 5 in this mounting area (MastVerbindungsabschnitt 5c), so that with fixed fixation between the boom and boom mast support means 35 of the boom with the associated The boom-mast support 35 and the sleeve 37, also fixed relative to the boom-mast support 35, can then rotate freely on the corresponding section of the mast, offering a number of advantages with respect to the alignment of the sail with the rig.

As explained, the boom-mast holding device 35 is preferably designed as a separate component relative to the sleeve-shaped, sleeve-shaped or clamping jaw-shaped or similar rotary body 25. This makes it possible for a wide variety of fork-mast fastening devices to be attached to this rotary body 25. Therefore, it is noted at this point that this rotary body 25 of home can be part of the boom-mast holding device 35, that is, a part of the rotary body 25 represents. In that case, would for receiving respective tilting moments with respect to the mast 5, the mentioned holding or fixing portions 39 (ultimately the mast receiving opening 37 and the mast receiving channel 37 formed thereby define) di- rectly on the outer circumference of the pole section 5c positioned ^¬ sets are (before so for example, the mast base ^¬ part 5a is joined together with the mast top part 5b to form a unitary structure). The length of Mastaufnah ^¬ mekanals 37 and thus the axial length of the holding or fixing sections 39 are in this case preferably have a greater longitudinal extent than is indicated with reference to Figure 1 or for a subsequently he ^¬ läutertes embodiment is based on Figure 8 ,

Quite generally, this longitudinal extent of the sleeve, cuff or clamping jaw-like holding or fixing section 39 and the rotary body 25 formed thereby can be designed completely differently. The axial dimension (longitudinal dimension) with which the boom mast holding device 35 attaches directly or with the interposition of a separate, preferably sleeve-shaped rotating body 25 on the mounting portion 105 of the mast 5, for example, greater than at least 2cm, in particular greater than 3cm , 4cm, 5cm, 6cm, 7cm, 8cm, 9cm, 10cm, 11cm, 12cm, 13cm, 14cm and 15cm. Similarly, it is usually sufficient when this longitudinal dimension is klei ^¬ ner than 30 cm, in particular less than 23cm, 22cm, 21cm, 20cm, 19cm, 18cm, 17cm, 16cm, 15cm, 14cm, 13cm, 12cm, 11cm, 10cm, 9cm , 8cm, 7cm, 6cm and 5cm.

In the variant discussed below according to FIG. 8, instead of the sleeve shown in FIGS. 4 and 5 25a used and used a threaded sleeve 25b, which is also straight and sits on egg ^¬ nem straight portion of the mast 5 sits (namely on the boom mounting portion 105, which is formed in the illustrated embodiment by the connecting portion 5c). Also this thread ^¬ sleeve 25b has an inner diameter which is at least slightly larger than the outer diameter of the mast 5 in this region, so that the threaded sleeve as easily as possible about its own longitudinal axis (ie the central axis 5a) can be rotated.

The boom-mast-holding device 35 itself has in this embodiment a mast mounting portion with a mast receiving opening 37, which is configured for example as a slotted, but preferably non-slotted (ie closed), hollow cylindrical boom mast holding device 35, with a corresponding Internal thread 35c. Otherwise, the up is also construction of this embodiment basically iden ^¬ table to the previously described embodiments. In other words, the boom-mast holding device 35 may otherwise be constructed basically as explained with reference to FIGS. 4 and 5.

This construction now using a threaded sleeve 35, which interacts with a corresponding internal thread in the receiving bore 37 of the boom mast holding device 35, offers the possibility that the surfer if necessary by turning the seated on the mast threaded sleeve 25b about its own longitudinal axis not ro ^¬ animal boom boom mast 35 may change the altitude of the boom-mast attachment 35. Also this can be done optimizing the overall alignment and the trim of the sail between the mast and boom and a preferred height adjustment of the boom, and this with the simplest means.

Optionally, a snap-like Endverriege ^¬ ment be provided so that the threaded sleeve 137 does not turn automatically or undesirably during surfing and thus can cause an undesirable height adjustment.

The dimensioning of the longitudinal extension of the threaded sleeve and / or the cuff and jaw-like or provided with a corresponding internal threaded bore portion of the boom-mast holding device 35 may be similar to the previous embodiment, which inter alia also with reference to Figures 4 and 5 has been explained. Finally, it is mentioned that, in order to increase the takeup ^¬ mekräfte the boom-mast holding device 35 can be configured with two opposing ribs 53, in particular art ^¬ material ribs 53, the 39 th between the baking, cuff or sleeve-shaped holding sections extend adjacent to the respective boom section abutments 44a and 44b.

Claims

Claims:

1. Rigging for a surfboard (8) with the following features: with a sail (1),

with a boom (11) with an associated belbaumkopf Ga (33) and a mast (5) and a Ga ^¬ wiring harness mast mounting means (35),

the boom-mast fastening device (35) comprises a holding body (35b),

the holding body (35b) has a mast receiving channel (37),

characterized by the following further features: the mast (5) comprises a mast lower part (5a), a mast top part (5b) and a mast connecting part connecting the mast bottom part (5a) and the mast top part (5b) ( 5c),

in the region of the mast connection section (5c) a sleeve (25a) is provided which is penetrated by the mast connection section (5c), wherein the sleeve ^¬ se (25a) to the mast connection portion (5c) relative to this mast connection section ( 5c) is rotatable attached ^¬ assigns,

in the assembled state of the boom (11) of the boom head (33) is attached to the sleeve (25 a), and

in the assembled state of the boom (11) is the boom (11) with the boom-mast

Fastening device (35) and arranged in the mast receiving channel (37) of the holding body (35b) sleeve (25 a) about the mast connecting portion (5 c) of the mast (5) pivotable.

2. rig according to claim 1, characterized in that the sleeve (25a) has an inner diameter which is ^{¬ at} least slightly larger than the outer diameter of the mast connection portion (5c), in the region of the sleeve (25a) is arranged.

3. rig according to one of claims 1 or 2, characterized in that in the assembled state of the boom (11) the sleeve (25 a) with the holding body (35 b) of the Ga ^¬ bel-mast fastening device (35) is fixed so that the boom (11) with the sleeve (25a) about the mast ^¬ connecting ^portion (5c) is pivotable.

4. rig according to one of claims 1, 2 or 3, characterized in that the sleeve (25a) is designed as a threaded sleeve (25b) with an external thread, wherein the mast receiving channel (37) is provided with an internal thread, such that the threaded sleeve (25b) is rotatably disposed with its Au ^¬ mens thread in the internal thread of the mast receiving channel (37), whereby the altitude of the attachment point of the boom (33) relative to the mast (5) is variable and / or different adjustable.

5. rig according to one of claims 1 to 4, characterized in that the sleeve (25a) in the axial direction overall genüber is the mast-connecting portion (5c) of borders anschlagsbe ^¬ immovably or up to a game held stopper ^¬ limited immovably.

6. rig according to at least one of claims 1 to 5, characterized in that the mast receiving channel (37) closed and thus sleeve-shaped or cuff-o- haltebackenförmig with a on the trailing side (17) of the mast receiving channel (37) parallel to the ^¬ longitudinal direction extending slot (41) is formed.

7. Rigging according to one of claims 1 to 6, characterized by the following further features:

the holding body (35b) further comprises a forwardly (15) lying in the boom head section ^¬ section (43, 44a, 44b), the transverse or perpendicular ^¬ right to the central longitudinal axis (5 ') of the mast receiving channel (37),

the boom head abutment portion (43, 44a, 44b) on the holding body (35b) is offset from the mast receiving channel (37) in the forward direction (15) out ^¬ forms, and

there is provided a boom support (149) which is part of or attached to and / or supported by the support body (35b).

8. rig according to one of claims 1 or 7, characterized in that the boom head holding device (149) comprises a tensioning element (49) preferably in the form of a webbing (49a) which is inelastic and flexible, about which a boom head (33) is held on the holding body (35b).

9. rig according to at least one of claims 1 to 8, characterized in that the boom head (33) about a transverse to the axial extension of the mast receiving channel (37) extending pivot axis (X) is rotatably supported.

10. Rigging according to at least one of claims 1 to 9, characterized in that the holding body (35b) comprises a central boom-section (43), to each of which opposite a Gabelbaumfrontbogen- side portion (33a, 33b) connects, both Ga ^¬ belbaumfrontbogen-side sections (33a, 33b) are strongly di- vergierend each other.

11. rig according to claim 10, characterized in that the boom head (33) in its position on the holding body (35b) fixed position is positioned so that the fork-tree front arch center portion (33c) of a central boom-contacting portion (43) of the holding body (35b) is raised, such that the two boom side arch side portions (33a, 33b) adjoining the boom front arc center portion (33c) abut against the two boom abutment portions (44a, 44b) facing each other centrally thereof ^¬ NEN boom connection section (43) of the holding body (35b) connect.

12. Rigging according to one of claims 8 to 11, characterized in that the clamping element (49) consists of a continuously closed clamping element ^¬ (49), which in two superimposed planes in two parallel loops on the rear side (17) to the MAN schetten-, haltebacken- or sleeve-shaped mast accepting channel walls (137) on the one hand and from there in each case to the boom head (33) in two laterally offset planes lie ^¬ constricting the boom head (33) extends around.

13. rig according to at least one of claims 1 to 12, characterized in that the Gabelbaumfrontbogen- side portion (33a, 33b) ge in different Höhenla-, ie at different points in the longitudinal direction of the sleeve-shaped pivot body (25) and thus in un ^¬ different altitude relative to the mast (5) can be fastened.