EP3405385B1 - Rig for a surfboard - Google Patents

Description

The invention relates to a rig for a surfboard.

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

To facilitate the overall handling, a number of improvements have been proposed over the past several 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.

For example, according to the DE 20 2007 018 172 U1 has been proposed, a boom head piece with a mast sections enclosing clamping sleeve to be provided, 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. For this purpose, the clamping sleeve has an associated with a sleeve head, at least partially bending elastic trained flap assembly with a hook which is engageable with a clamping lever attached to the clamping means and together with the collar 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 into a structurally complex overall fastening mechanism.

Just as complex, for example, a corresponding boom-mast fastening device, as shown in the DE 84 07 643 U1 is known. From this prior publication, 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.

In contrast, simpler constructed boom-mast fasteners are from the DE 20 2009 013 093 U1 refer to. The boom head includes for this purpose a central portion with opposite thereto starting and diverging to each other arranged clevis connection pieces, wherein the boom center section at a semi-cylindrical shell can be supported, which is provided with a bracket supported 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 rig with a mast boom connection for standing sailboards is from the EP 0 320 950 A1 known. The boom is frictionally connected to the mast. For this purpose, the boom support in the untensioned state on a predetermined inner circumference, so that it can be pushed onto the mast without any special effort. Subsequently, the boom support by generating a hoop stress in frictional connection with the mast can be brought. Between the mast and the boom support a mast diameter adapter is provided which has at least two effective between the mast and the boom support diameter adjustment ranges. The one diameter adjustment portion has, together with the mast or mast portion of a first diameter and the other together with the mast or mast portion of a second diameter on an outer circumference corresponding to the inner periphery of the boom support in the untensioned state. By pivoting 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 compression forces between the boom head and mast are generated. As a result, the boom and the mast form a solid, mutually non-rotatable unit.

A generic boom attachment to a mast of a surfboard is, for example, from EP 0 274 667 A1 known. For this purpose, the boom fastening comprises a sleeve element which can be placed on the mast. The sleeve element itself consists of a full sleeve, which is formed for example of metal, wherein on the inside of this full sleeve a rubber lining is provided. This can ensure that the cuff on the mast can not slip easily. The sleeve itself has a boom end fitting, which is hook-shaped in side view and has a downwardly facing opening. In this opening, a boom can be introduced with its leading end of the boom, from below. By a 90 ° pivoting of the boom this is then finally brought into a secure position.

An extent at least partially similar design of a mast boom connection for standing sailboards is also from the EP 0 320 950 A1 known. For this purpose, an annular boom holder 11 is mounted on the mast. To secure this annular boom support 11 slip-proof on the boom, a mast diameter adapter is used. The mast attachment itself is additionally provided with a beabsgandet held in front of the mast holding bolts, in which a hook-shaped nose of the leading end of the boom can be hung by a 90 ° pivoting.

For partially identical fastening methods is also supplementary to the FR 2 603 245 A1 and the FR 2 639 901 A1 directed.

Finally, it will be on the DE 38 06 560 A1 referenced in which a clamping sleeve is used to clamp a boom head to a mast. The clamping sleeve known from this prior publication is provided with an outwardly open helical profile, which is designed so that the clamping sleeve merges from bottom to top in an increasingly larger diameter. A tensioning cable itself is arranged to extend in a partial circumferential region of the corresponding receiving profile of the tensioning sleeve. By rotating the clamping sleeve thereby moves the tensioning cable according to the rotational position of the helical profile in a different altitude, being stretched by the changing diameter, the tensioning cable accordingly and the inside of the boom head is firmly clamped to a partial peripheral region of the mast.

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 features specified in claim 1. 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, includes few parts and offers an optimal possibility, a boom and in particular a boom head freely pivotable on a mast, ie preferably anchored without play.

The invention also opens up the possibility of producing these high fastening and clamping forces with minimal physical effort.

According to the invention, a sleeve which is rotatably arranged opposite the mast is provided on the mast fastening section, to which the boom head, that is to say a leading boom arch, is to be fastened. Here, for example, a mast holder provided with a passage opening engages, which has a passage opening which is matched in accordance with the rotatable sleeve. The patch on the mast sleeve protrudes through a corresponding passage opening in the mast holder, which completely surrounds the sleeve or preferably slits may be formed, wherein the slot is then aligned similar to the course of the sail of a rig.

The boom can be designed, for example, so that it is positioned in an approximately more than 120 ° against the later sailing position relative to the mast. In this position, the boom front bow (boom head) with the aid of a tensioning element (in particular a webbing) on the mast can then be attached to a mounting portion. 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. Subsequently, the boom can be pivoted to the mentioned about 120 ° or more in its rearward position, the mast end then pivots relatively through the boom. Held the boom is still characterized by the mentioned clamping element, for example in the form of a webbing. As a result, a tightening of this clamping element and thus a strong and firm connection between the boom head and mast holder is ultimately generated, namely by jamming with the rotatable mast sleeve mounted on the mast.

In the context of the invention it is now proposed to form the sleeve rotatably mounted on the mast as a threaded sleeve with an external thread, which interacts with a formed in the passage opening of the mast holder internal thread. In other words, preferably the passage opening completely surrounding (closed) mast holder with the internal thread on the rotatable threaded sleeve (which is rotatably mounted on the mast) is screwed.

Also in this variant is again with respect to the length exactly defined clamping element, as mentioned, for example in the form of the webbing provided, about which the boom is connected to the preferably designed in the manner of a plastic fitting 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 working position. The above-explained preferred embodiment 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 can be configured specifically in a further development according to the invention, for example in the form of a curved arch-shaped mast with a straight boom attachment section on which the boom-mast holding device is arranged pivotably, for example in the form of said mast holder or can be arranged.

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

Overall, this can create a very cheap boom-mast connection and this preferred on a home from, so permanent arcuate designed mast, which may consist of plastic or carbon fiber reinforced plastic. Does this mast over a substantial part of its total length a teardrop-shaped profile with trailing groove, a sail can be hung and held directly at the trailing end of the drop-shaped profile of the mast here in connection with the inventive boom mast holding device, so that with the inventive Boom-mast connection to achieve optimum utilization of the wind while avoiding turbulence.

Figur 1:

eine schematische Seitenansicht auf ein Rigg eines Surfbrettes;

Figur 2a:

eine schematische Seitenansicht eines erfindungsgemäßen ausgestalteten teilbaren Mastes;

Figur 2b:

eine ähnliche Darstellung zu Figur 2a in zerlegter Form des Mastes;

Figur 2c:

ein vergrößerter Ausschnitt eines Teilbereichs des Mastes unter Darstellung einer Hülse;

Figur 3a bis 3d:

verschiedene Querschnitte durch den Mast in unterschiedlicher Höhe des Mastes;

Figur 3e:

eine abgewandelte Querschnittsdarstellung durch den Mast in Höhe des Gabelbaumkopf-Befestigungsabschnittes;

Figur 4:

eine schematische Draufsicht auf eine Gabelbaum-Mast-Halteeinrichtung 35, worüber ein Gabelbaum gegenüber dem Mast drehbar befestigbar ist, und zwar in der Fixierstellung;

Figur 5:

eine zu Figur 4 vergleichbare Darstellung, bei der der Gabelbaum von seiner Funktionsstellung unter dem Mastende hindurch nach vorne in seine gelöste Stellung verschwenkt ist;

Figur 6:

eine schematische Seitendarstellung, in der der Gabelbaum in seine Außereingriffsstellung (gelöste Stellung) vor den Mast verschwenkt ist;

Figur 7a:

eine schematische auszugsweise Querschnittsdarstellung (parallel zum Mast) zur Darstellung der Ausbildung der seitlichen Anlageabschnitte der Masthalterung zur Anlage des Gabelbaumkopfes;

Figur 7b:

eine entsprechende Darstellung zu Figur 7a bezüglich des mittleren Anlageabschnittes der Masthalterung zur Anlage des Gabelbaumkopfes;

Figur 8:

eine schematische rückwärtige Ansicht eines abgewandelten Ausführungsbeispieles mit einer Höhenverstelleinrichtung für den Gabelbaumkopf.

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

FIG. 1:

a schematic side view of a rig of a surfboard;

FIG. 2a:

a schematic side view of an inventive designed divisible mast;

FIG. 2b:

a similar representation too FIG. 2a in disassembled form of the mast;

FIG. 2c:

an enlarged section of a portion of the mast, showing a sleeve;

FIGS. 3a to 3d:

different cross sections through the mast at different heights of the mast;

FIG. 3e:

a modified cross-sectional view through the mast at the level of the boom head mounting portion;

FIG. 4:

a schematic plan view of a boom-mast holding device 35, about which a boom relative to the mast is rotatably fastened, in the fixing position;

FIG. 5:

one too FIG. 4 comparable representation in which the boom is pivoted from its functional position under the mast end forward in its released position;

FIG. 6:

a schematic side view in which the boom is pivoted in its disengaged position (released position) in front of the mast;

FIG. 7a:

a schematic excerpts cross-sectional view (parallel to the mast) to illustrate the formation of the lateral abutment portions of the mast holder for conditioning of the boom head;

FIG. 7b:

a corresponding representation too Figure 7a with respect to the middle abutment portion of the mast holder for the installation of the boom head;

FIG. 8:

a schematic rear view of a modified embodiment with a height adjustment device for the boom head.

Before discussing the inventive design of the boom mounting, the basic schematic structure of a mast or mast training preferably used in connection with the boom fixing device is first explained with reference to the figures.

In FIG. 1 is shown in schematic side view a rig with a sail 1. The sail is attached to his luff 3 to a mast 5, which in turn via a Mastfußgelenk 7 (universal joint 7) on an only partially indicated sailboard 8 on all sides freely rotatable and pivotally mounted.

Such a sail 1 is usually at its rear end 9, so at its so-called clew 9, on a sail 1 surrounding the boom 11, i. at the end of the boom 11a, trimmed.

From the schematic page representation according to FIG. 1 It can also be 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 2b) extending and sewn into the sail 1 batten pockets 2a, are usually used in the corresponding slats 2b for stiffening the sail ,

The aforementioned mast 5 can basically consist of a straight mast. In the context of the invention, however, a permanently bent mast 5 is preferably used. The bend at the upper end of the mast 5 is usually even stronger than in the lower portion of the mast 5. In other words, the mast is thus at least partially, and preferably curved at least towards its upper end or more curved. The curvature can be referred to simply as crescent-shaped or sickle-like, although conventional sickles usually have a much greater curvature than that in FIG FIG. 1 Mast 5 shown in side view. This ultimately allows a larger sail area, without the need to increase the height of the sail. This can also be ensured that the holding force against the wind pressure does not increase significantly.

Due to the aforementioned trim at the rear end of the sail of the aforementioned mast - regardless of whether he is basically straight or even from home slightly arcuate, so permanently arched designed - slightly further bent by the introduced trim forces at least in the upper area.

Usually, in a partial length region of the mast 5, to which the leading end of the boom 33 is attached to the mast 5, a corresponding recess 1a of a sail 1 is provided, so that the leading end of the boom here preferably (as explained below is at least indirectly) attached to the exposed mast can be.

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. However, this straight running attachment portion 105 on the mast is not only provided when the mast as a whole is straight, but also when (as preferred and executed in FIG. 1 represented) of the mast in its essential longitudinal extent of home, so it is permanently curved.

In FIG. 2a is shown in a schematic side view of the mast 5 in side view without associated sail and without a boom schematically in a preferred variant. From this variant it can be seen that the mast 5 is ultimately divided into three sections, namely a so-called mast lower part 5a with a length 5'a, in a so-called mast upper part 5b with a length 5'b and in a mast connecting part 5c with a length 5'c connecting the mast lower part 5a and the mast top part 5b. 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. In the illustrated embodiment, the mast connection part 5c is an integral part of the mast lower part 5a, as shown in the schematic side view FIG. 2b can be seen. Because in FIG. 2b the mast 5 is reproduced in its decomposed form.

The aforementioned mast connection part 5c at the same time forms the so-called. Fork-head fastening portion 105 to which a later-explained boom head of a boom can be attached and held.

The mast upper part 5b has for this purpose a channel-shaped receiving opening 5d, which may be formed in the illustrated embodiment as a round bore or blind hole. Here, 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 connected together. At this point, shortly beforehand Figure 2c referenced, in the detail, the lower end of the mast shell 5b, the distance below underlying upper end of the mast lower part 5a and the intermediate mast connection part 5c are shown, on which a rotary body 25 relative to the mast rotatable or pivotable is arranged and held, which will be discussed in more detail below.

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.

Based on Figure 3a, Figure 3b, Figure 3c such as 3d figure are different cross sections along the lines IIa-IIa, IIb-IIb, IIc-IIc and IId-IId in FIG. 2a played.

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. By this resulting in cross-section drop shape of the mast 5 is partially circular in shape on its leading side 15 generally convex with a cross-sectionally semicircular or semicircular, ie preferably semi-cylindrical portion 19 a designed, then to its trailing end 17 in an increasingly tapered section 19b merges, in the trailing end of a configured with an undercut 21 groove 22 is introduced. However, the arched shape 19a in the leading portion 15 of the drop-shaped mast profile can be configured in wide ranges with any radius or with any radius changing. Aerodynamic shapes are preferably realized.

From the cross-sectional view according to FIG. 3b It can be seen that this cross-sectional representation preferably has the greatest transverse and longitudinal extent, that is, in the amount of the end face areas of the upper part of the mast and the lower part of the mast which are to be superimposed on one another. In other words, the upper end of the mast lower part 5a and the lower end of the mast upper part 5b each adjacent to the mast connecting portion 5c on the usually largest longitudinal and transverse extent, ie once in the direction of the sail 1 and in the transverse direction thereto. 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 slowly or partially tapered mast cross section, as based on 3d figure is indicated. However, this can also be dispensed with, so that the mast lower part has a more or less constant cross section over its entire length, but can also be provided with an increasingly larger cross section towards its mast base. Here are any modifications possible.

The cross-sectional view according to Figure 3c shows that the mast connection portion 5c again has or may have a cylindrical or hollow cylindrical shape. Generally, 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.

Based on the schematic cross-sectional view according to FIG. 3e is alternative to the circular cross-sectional view according to FIG Figure 3c shown that also different from the circular shape other cross sections for the boom mounting portion 105 are possible. Axially symmetrical cross-sectional shapes are preferably realized. Based on Figure 4e It is shown that, for example, a more square cross-sectional shape can be used with corresponding rounded corners, so that a patch here sleeve or corresponding cuff or holding jaw-shaped abutment portions 39 are supported on this example, rounded edges or corners of the provided with such a cross-section boom attachment portion 105 can. This also allows a possible backlash-free rotation of the sleeve 25 can be realized about the boom mounting portion 105. Further, insofar as desired, any 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 can be inserted by means of a thickened approach in the longitudinal direction of the groove 22 and thereby securely anchored to the mast 5. In this case, the mentioned recess 1a comes to lie on the luff 3 of the sail 1 on the trailing side 17 of the mast in height of the mast connecting portion 5c.

Such a mast is preferably made of plastic, which is sufficiently stable and at least still slightly elastically deformable in order to trim a corresponding sail can. Preferably, the mast is made 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 from the page presentation according to FIGS. 2a and 2b can be seen, the explained mast 5 is preferably wide curved, that is at least partially formed slightly curved over its length, so that there is a sickle-shaped or sickle-like shape. In other words, the mast from its foot to its upper mast head at least over its essential longitudinal extension sections arcuate or at least slightly arcuate designed, preferably continuously arcuate, in particular to its foot end out 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 running, 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 mast Twisted connection portion 105 around this mast connection portion 105 around or can be pivoted. The resulting benefits will be discussed later.

Based on Figure 2c is, as already mentioned, an enlarged section of the mast connecting portion 5c and the adjoining mast lower part 5a and the mast upper part 5b shown in a perspective view.

From this it can already be seen that on the mast base 5a connecting the mast top 5b mast connecting portion 5c mounted on this portion rotatable, 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 pivoting body 25 preferably has a dimension which is at least slightly shorter than the distance D between the upper end or boundary side 5 "a of the mast lower part 5a and the downwardly facing end or boundary side 5" b of the mast top part 5b. This distance D results when the mast with its two parts 5a and 5b as shown in FIG FIG. 2a is plugged together. As a result, the torsion body 25 is rotatable about the axis of the mast connection part 5c and / or pivotable or at least freely rotatable and / or pivotable by a certain angular extent. At the same time, the pivoting body 25 is held in the axial direction more or less immovable limit stop (apart from a possibly provided small game).

In the preferred embodiment according to the Figures 1 to 3d penetrates the mast 5, ie at least the Mast connecting portion 5c, the rotary body 25 passing through the receiving bore 5d, wherein the aforementioned rotary body 25 preferably in the manner of a sleeve 25a or as will be shown later, may be formed in the manner of a threaded sleeve 25b. The aforementioned sleeve-shaped rotary body 25 is designed with its receiving bore 5d as well as the mast connecting portion 5c passing through it straight, so not arcuate, so that here the mentioned desired rotation or rotation or pivoting movement of the pivot body 25 relative to the 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 slightly larger than the outer diameter of the mast in this attachment 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.

Below will be discussed with reference to other figures on an inventive attachment of the boom on the mast.

In FIG. 4 is a partial cross-sectional view through the mast 5 at the level of the mast connection portion 5c shown, directly above the front end of the boom, which is also referred to below as the boom head 33 or boom front arch 33. The variant according to FIGS. 4 and 5 a first embodiment of a possible boom-mast attachment. According to this embodiment, the boom-mast fixing 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 in part as a boom-mast holding device 35.

This boom-mast holding device 35 with a holding body 35b has a mast receiving opening 37. In other words, the in FIG. 1 shown mast 5 at least in the region of the cross-sectional view according to FIG. 4 perpendicular to the drawing plane E. In unloaded starting position, ie in particular without wind, the mast 5 runs in the in FIG. 4 dot-dashed symmetry or median plane S and is bent from its 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 indirectly encompassed, because on the mast 5 here in the region of the mast connecting portion 5c of the aforementioned rotary body 25 is attached in the form of a sleeve 25a and freely rotatable here. The sleeve 25a is in the side view according to Figure 2c shown. In this case, the arrangement according to FIG. 4 be such that the baking, cuff or sleeve-shaped holding portions 39 are not circumferentially closed are, but on their trailing side 17 spaced from each other, preferably on both sides of 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 is in FIG. 4 shown cross-section transverse to the central axis 5 'of the mast 5 (at least in the mast receiving opening 37) T- or π-shaped or double-wing-shaped or double wing-like design, wherein adjacent to a central boom installation section 43 adjoining lateral boom installation sections 44a and 44b are formed.

The central boom installation section 43 may, for example, have a length (in the plane of the drawing E) transverse to the plane of symmetry S which is of the order of the diameter of the mast reception opening 37. Values of, for example, more than 40%, in particular more than 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 an appropriate order of magnitude, the respective length of the side armature abutment sections 44a, 44b may be formed, which are aligned symmetrically with respect to the plane of symmetry S with respect to the central armature abutment section 43 slightly trailing, that is to say strongly diverging to each other. The angle α 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 perpendicular to the plane of symmetry S. extending plane E1 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 aforementioned two side armature abutment sections 44a, 44b may also be slightly convex to its leading end, according to the course and the shape of the boom front arch 33, which is often referred to as the boom head 33.

Finally, from the illustration according to FIG. 4 Also to see that still a clamping element 49 is provided, in the illustrated embodiment in the form of a closed circumferential 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 exemplary embodiment shown, the belt loop 49 encloses the fork boom once on the left side of the plane of symmetry S and once on the right side of the plane of symmetry S, with a predefined defined length, and then around the outer circumference of the back, cuff or for example in an upper and a lower plane sleeve-shaped Mastanlageabschnittes 39 of the boom mast holding device 35 to encompass.

In FIG. 4 while the boom 11 is shown with his boom front sheet 33 in a stretched and fixed to the mounting portion 105 of the mast 5 position. In this position, the two side boom front side portions 33a and 33b are in the region of their trailing outer wall portion at least partially to the corresponding leading abutment portions in the region of the side armature abutment portions 44a and 44b. In this position - as will be discussed later - the leading boom front arch middle portion 33c is raised at its trailing side from a corresponding central boom engaging portion 43 of the bracket body 35a of the boom mast support 35 to form a distance A. In this case, the length of the distance between the center of the boom front arc center portion 33c and the center of the mast receiving opening 37 is designated by A1. The importance of the distance A or the length of the measure A1 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 support 35 is shown, especially under wind load (in FIG. 4 Coming from the right), for example, the sail bulges to the left while the entire mast 5 and its central axis 5 'is rotated clockwise so that the in FIG. 4 indicated drop-shaped profiling of the mast lower part 5a (and also the mast top 5b) in the illustration according to FIG. 4 are turned clockwise to the left. At the end of the profile is also shown dotted, which assumes the position of the sail 1 running from there. Already from this it can be seen that there is an optimal contour between profiled mast and subsequent sail, about which optimal (turbulence or low turbulence) propulsive forces can be generated.

Based on FIG. 5 is referring to FIG. 4 the position of the boom or the boom front arch shown before the boom is firmly locked to a mast.

According to FIG. 6 is doing side view of the boom of his in FIG. 1 shown functional position (ie before disarming the clew, ie at the end of the boom) under the mast 5 of the mast 1 pivoted away in a leading position.

In this initial situation before trimming, therefore, the two boom front side portions 33a and 33b are lifted from the respective 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 in FIG. 5 is shown. In this position, therefore, the boom 11, which is the corresponding wrapping of the webbing Interspersed 49a, easily rotatable, ie easily to a transverse to the central axis 5a of the mast 5 extending axis which extends in or approximately in the drawing plane E.

The distance between the center of the boom front arch middle section 33c to the center 5 'of the mast receiving opening 17 (and thus to the center of the mast 5) is designated by the reference A2. This dimension A2 is significantly smaller, that is shorter than the longitudinal dimension A1 in FIG. 4 ,

For fixed fixation of the boom 11 on the mast 5 then ultimately the boom 11 of his in FIG. 6 shown position (in which the entire boom 11 is leading in front of the mast against its final functional position) when viewed from the side in accordance with FIG. 6 pivoted counterclockwise along the arrow 41 within the tensioning element 49 (webbing 49a) until its end of the boom 11a in the in FIG. 1 shown and in FIG. 6 dashed lines indicated functional position is located. During this pivotal movement about its pivotal axis X passing through the boom front arc central portion 33a in the longitudinal direction thereof, the two boom front arc side portions 33a and 33b run on the side boom engaging portions 44a and 44b of the boom mast support 35, respectively, whereby the boom front arc center portion 33c is lifted off the corresponding central boom-abutting portion 43. As a result, the tensioning element 49 is preferably carried along and tensioned accordingly in the form of the webbing 49a. Since the length of the webbing 49a defines exactly is that the final in FIGS. 1 and 4 reproduced clamping position can be achieved, but only under extreme introduction of clamping forces on the strap 49, the optimal fixation of the boom 11, ie the boom head 33 is realized on the aforementioned rotary body 25, here in the form of the sleeve 25a, on the corresponding section 5c the mast 5 as possible without play, but is held rotatable or pivotable. It is off FIG. 4 Also, it can be seen that now the distance A1 between the middle of the boom front arch center portion 33a and the center of the mast receiving opening 37 with respect to the length of the distance A2 according to FIG. 5 has significantly increased, whereby in cooperation with the clamping band 49, the desired high clamping forces are generated. The aforementioned tensioning element 49, preferably in the form of the tensioning element 49 or the strap 49a, fulfills the function of a boom-holding device 149.

Important and interesting in this context is that with the illustrated fastening device of the boom head 33 at different locations, ie at different altitudes on the rotary body 25 can be fixed here in the form of the aforementioned sleeve 25a. Because the fastening device always acts between the boom head 33 and sleeve. Due to the different attachment point in different height of the rotary body 25 in particular in the form of the sleeve 25 a so that a different fixation in different altitude of the boom head relative to the mast 5 can be achieved. The longer the sleeve 25a, the larger the available fixing area or the available fixing point for the boom head 33.

As based on Figure 7a As can be seen, the side boom attachment portions 44a, 44b in vertical cross-sectional view (perpendicular to the plane of FIG FIG. 4 or 5 ) correspondingly slightly concave between an upper and a lower edge 53, whereby the corresponding spar-like boom side arc-side portions 33a, 33b in these concave side armature abutment portions 44a, 44b can be rotated well guided and applied. Accordingly, the middle boom-conditioning section could be designed. According to the sectional view according to FIG. 7b this section is formed only partially recessed with respect to an upper and lower edge 53 and does not have to be exactly concave in between, but may be designed only in the manner of a flat bottom 54 having recess 52.

In the illustrated embodiment, preferably using a slotted sleeve, the corresponding holding jaws 39 can enclose the preferably sleeve-shaped rotary body 25 at the corresponding abutment sections, wherein the high clamping forces generated by the boom front arch and thus the entire boom in the front area on this boom mast holding device 35 fixed or largely fixed to the rotary body 25 is fixed, which in turn can pivot or rotate about the mast connecting portion 5c. At least in a sufficiently large angular range. 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 be brought by the strap of the boom with its rear end of the boom in the appropriate 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 so there is a free or largely free pivoting of the boom with the sleeve-shaped VerDrehkörper 25 around the mast 5 around, the sleeve-shaped VerDrehkörper 25 even in the longitudinal direction of the mast between the mast base 5a and the mast top 5b quasi axially is held immovably or centered.

It is based on FIG. 5 in deviation to FIG. 4 also shown that the boom-mast holding device 35 must have no jaw or sleeve-shaped holding or fixing sections 39, but that the boom mast holding device 35 may also be formed slot-free and thus 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 illustrated variant, the mast holder 15 thus sits with its jaw, sleeve or sleeve-shaped sections directly on the rotary body 25, preferably the mentioned sleeve 25a, thus embraces the rotary body 25. In this case, the rotary body 25 with an inner diameter with respect to the rotary body 25th provided by receiving bore, which, as mentioned, at least slightly larger than the outer diameter of the mast 5 in this mounting region (mast connection portion 5c), so that with fixed fixation between the boom and boom-mast support means 35 of the boom with the associated boom-mast support means 35 and also fixed relative to the boom mast support 35 sleeve 37 can then rotate freely on the corresponding portion of the mast, which has a number of advantages Regarding the orientation of the sail with the rig offers.

As explained, the boom-mast holding device 35 is preferably designed as a separate component relative to the sleeve, sleeve or jaw-shaped or similar rotary body 25. This allows the possibility that 25 different fork-mast fastening devices can be attached to this rotary body. 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 this case, the receiving or fixing sections 39 (which ultimately define the mast receiving opening 37 or the mast receiving channel 37 thus formed) would be placed directly on the outer circumference of the mast section 5c to receive corresponding tilting moments relative to the mast 5 (ie, for example, before the mast lower part 5a is assembled with the mast top 5b to a unitary structure). The length of the mast receiving channel 37 and thus the axial length of the holding or fixing sections 39 in this case will preferably have a greater longitudinal extent than that of FIG FIG. 1 is indicated or for an embodiment explained below based on FIG. 8 results.

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 to 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 if this longitudinal dimension is smaller than 30cm, especially smaller 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 the FIG. 8 is instead of in FIGS. 4 and 5 shown sleeve 25a, a threaded sleeve 25b is used and used, which is also straight and sits on a straight portion of the mast 5 sits (namely on the boom mounting portion 105, which is formed in the embodiment shown by the connecting portion 5c). These threaded sleeve 25b has an inner diameter which is at least slightly larger than the outer diameter of the mast 5 in this area, so that the threaded sleeve as easily as possible about its own longitudinal axis (ie 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, for example is designed as a slotted, but preferably non-slotted (ie closed), hollow cylindrical boom mast holding device 35, with a corresponding internal thread 35c. Otherwise, the structure of this embodiment is basically identical to the previously described embodiments. In other words, the boom-mast holding device 35 otherwise as based on FIGS. 4 and 5 basically explained.

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 non-rotating boom mast fixture 35 may change the altitude of the boom mast fixture 35. Again, an optimization of the overall alignment and the trim of the sail between the mast and boom and a preferred height adjustment of the boom can be carried out, and with the simplest means.

Optionally, a snap-like end lock may 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 internally threaded bore portion of the boom-mast holding device 35 can be similar to the previous embodiment, which among other things also on the basis of FIGS. 4 and 5 been explained.

Finally, it is mentioned that in order to increase the absorption forces, the boom-mast holding device 35 can still be configured with two opposite ribs 53, in particular plastic ribs 53, which are arranged between the baking, sleeve or sleeve-shaped holding sections 39 to the respective adjacent boom. Bearing sections 44a and 44b extend.

Claims (12)

1. Rig for a surfboard (8), comprising the following features:

   - comprising a sail (1),

   - comprising a boom (11) having a corresponding boom head (33) and having a mast (5) and a boom-mast holding means (35),

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

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

   - the mast (5) comprises a lower mast part (5a), an upper mast part (5b) and a mast connection portion (5c) that connects the lower mast part (5a) and the upper mast part (5b),

   - a bush (25a) is provided in the region of the mast connection portion (5c) and is penetrated by the mast connection portion (5c), wherein the bush (25a) is arranged on the mast connection portion (5c) so as to be rotatable with respect to said mast connection portion (5c),

   - when the boom (11) is mounted, the boom head (33) is fastened to the bush (25a), and

   - when the boom (11) is mounted, the boom (11) having the boom-mast holding means (35) and having the bush (25a) arranged in the mast-receiving channel (37) of the holding body (35b) is pivotable about the mast connection portion (5c) of the mast (5),

   - the bush (25a) is designed as a threaded bush (25b) having an external thread,

   - the mast-receiving channel (37) is provided with an internal thread, and

   - the external thread of the threaded bush (25b) is rotatably arranged in the internal thread of the mast-receiving channel (37), as a result of which the height position of the fastening point of the boom (33) can be altered and/or can be variably adjusted with respect to the mast (5).
2. Rig according to claim 1, characterised in that the bush (25a) has an internal diameter that is at least slightly smaller than the external diameter of the mast connection portion (5c), in the region of which portion the bush (25a) is arranged.
3. Rig according to either claim 1 or claim 2, characterised in that when the boom (11) is mounted, the bush (25a) is fixed to the holding body (35b) of the boom-mast-fastening means (35) such that the boom (11) can be pivoted together with the bush (25a) about the mast connection portion (5c).
4. Rig according to any of claims 1 to 3, characterised in that the bush (25a) is held in a manner restricted by a stop, or in a manner restricted by a stop allowing for clearance, so as to be immovable in the axial direction relative to the mast connection portion (5c).
5. Rig according to at least one of claims 1 to 4, characterised in that the mast-receiving channel (37) is closed and is thus bush-shaped or sleeve- or clamping-jaw-shaped having a slot (41) extending on the trailing side (17) of the mast-receiving channel (37) in parallel with the longitudinal direction of said channel.
6. Rig according to any of claims 1 to 5, characterised by the following additional features:

   - the holding body (35b) further includes a boom-head abutment portion (43, 44a, 44b) which is positioned in the leading direction (15) and extends transversely or perpendicularly 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 designed so as to be offset from the mast-receiving channel (37) in the leading direction (15), and

   - a boom-head holding means (149) is provided which is part of the holding body (35b) or is fastened thereto and/or supported thereon.
7. Rig according to either claim 1 or claim 6, characterised in that the boom-head holding means (149) includes a tension element (49), preferably in the form of a belt (49a), which is non-resilient but flexible, by means of which element a boom head (33) is held on the holding body (35b).
8. Rig according to at least one of claims 1 to 7, characterised in that the boom head (33) is held so as to be rotatable about a pivot axis (X) extending transversely to the axial extension of the mast-receiving channel (37).
9. Rig according to at least one of claims 1 to 8, characterised in that the holding body (35b) includes a central boom abutment portion (43) which is abutted on each opposing side by a boom front arch lateral portion (33a, 33b), the two boom front arch lateral portions (33a, 33b) extending so as to significantly diverge from one another.
10. Rig according to claim 9, characterised in that the boom head (33) is positioned in its position fixed to the holding body (35b) in such a way that the boom front arch central portion (33c) is raised by a central boom abutment portion (43) of the holding body (35b) such that the two boom front arch lateral portions (33a, 33b) which abut the boom front arch central portion (33c) are supported on the two boom abutment portions (44a, 44b) which abut the boom abutment portion (43) of the holding body (35b) on each opposing side, which abutment portion is provided centrally for this purpose.
11. Rig according to any of claims 7 to 10, characterised in that the tension element (49) consists of a circumferentially closed tension element (49) which extends, in two superimposed planes, in two parallel loops on the rear side (17) around the sleeve-, clamping-jaw- or bush-shaped mast-receiving-channel walls (137) and, from there, around the boom head (33) in two laterally offset planes on the boom head (33).
12. Rig according to at least one of claims 1 to 11, characterised in that the boom front arch lateral portion (33a, 33b) can be fastened at various height positions, i.e. at various points in the longitudinal direction of the bush-shaped rotary body (25), and can thus be fastened at various height positions with respect to the mast (5).

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