DE202024000573U1 - Redirected coupling of the tow and safety line for a large stunt kite - Google Patents

Abstract

Pull and safety lines (1) on a large stunt kite (8), with flying lines (2.1 and 2.2) and control lines (3.1 and 3.2), which transmits tensile forces to a user (7) and a handlebar (6) during operation, with a first strand (1.1) of the pull line, on which a length adjustment element (1.4) with an adjustment line (1.4.1) is arranged on a first deflection (1.1.1), characterized in that the adjustment line (1.4.1) is operatively connected via a deflection (1.1.2) connected to at least one flying line (2.1) to a second pull line strand (1.2), which, guided by the handlebar (6), is arranged on the user side with a stop element (1.2.1) on a releasable trapeze loop system (4).

Description

The present invention relates to the arrangement and deflection of the traction and safety line(s) of a large stunt kite which, as part of a sports device, transmits a traction force to a connected user during operation according to the preamble of claim 1.

Such stunt kites are used to power kite (surf) boards, snowboards, skis, buggies and other vehicles for sporting purposes. The "kite" is equipped with several lines that serve to control the direction and speed of flight, as well as to regulate the angle of attack (angle of flow).

The kite generates lifting forces through wind flow based on the hydrofoil principle, which are transferred as pulling forces via the lines to the bar and the user. The lifting-dependent pulling forces can be regulated by relative changes in the length of the flying and control lines. If the user pushes the bar "away from the body" via the pulling line connected to the trapeze strap, the load on the control lines is relieved; tilting the kite's profile reduces the lifting force and the pulling forces are reduced. To pull the bar in to increase the lifting forces and to control the direction and speed of the kite's flight, the user must apply holding and steering forces by pulling on the bar accordingly.

The control lines are connected directly to the ends of the handlebar. The flying lines are combined into a tow line above the bar and then form a "Y" with the tow line. Depending on the relative leg lengths of the line arrangement of the "Y", different tensile force distributions follow, which the user can feel in the power transmission and control of the kit. The smaller the length of the flying lines in relation to the total line length, the greater the angle between the flying lines and thus also the angle of the individual flying lines to the center axis of the kite.

Since lines can only transmit tensile forces, the transmitted force runs exactly in the direction of the lines. The greater the angle of the lines to the center axis of the kite, the greater the proportion of the transverse forces of the kite profile that are transmitted to the lines, which are generated by the lift of the side surfaces that are mostly aligned parallel to the center axis.

The tow line usually contains an adjustment element consisting of a rope clamp or a redirected webbing system with a webbing clamp. The adjustment element can be used to adjust the relative lengths of the flying lines and control lines depending on the desired area of use and/or the wind force. This extends the area of use for the respective size of the kite used.

The pull line is guided in one or several parallel strands through the middle of the bar or through sleeve(s) attached to the outside of the bar and is designed as a "trapezoid loop" at the end facing the user or is attached to such a "trapezoid loop" which is hooked onto the hook of the user's trapeze belt tied around the body.

In addition, in the known systems, a safety line connects the user to one or more flying lines.

In order to avert danger for the user and third parties, it is possible in an emergency to decouple the traction connection between the user and the kite, so that the user is only connected to the kite, which has at least largely no traction, by means of the safety line.

In common designs, especially when using kites whose flying lines end in a line branch mounted as a balance and attached to several places on the front frame, the safety line is connected to at least one of the two flying lines at a sufficient distance from the user and the bar. If the user detaches himself from the bar and the trapeze loop, the complete relaxation of the control lines and at least partial relaxation of one flying line leads to the rupture of the air flow that creates lift on the kite profile and the kite falls down under its own weight without any traction.

In other common designs, in which the pull line is guided through or along the bar to the user in (at least) two parallel strands, one of the strands serves as a safety line, which remains connected to the user when the safety system is triggered.

State of the art

• 1) Ausführungen, bei denen die Sicherheitsleine mit beiden Flugleinen gleichermaßen oder in einem durch Umlenkung vorgegebenen Verhältnis der Flugleinen verbunden ist. Die Sicherheitsleine wird abhängig von der Ausführungsvariante als zusätzliche Leine oder als Teil einer mehrsträngig geführten Zugleine entlang oder durch die Bar zum Benutzer geführt. Wird einer von mehreren vorhandenen Strängen der Zugleine als Sicherheitsleine genutzt, so ist der als Sicherheitsleine verwendete Strang zum Erhalt einer von der Einstellung des Justierelements unabhängigen Vorspannung mit einer Umlenkung zum anderen Strang der Zugleine verbunden.
• 2) Ausführungen, bei denen die Sicherheitsleine ausschließlich mit nur einer der Flugleinen verbunden ist. Die Flugleinen können direkt mit dem Justierelement in maximal möglicher Länge oder in einer vorgegebenen oder einstellbaren Länge verbunden sein. Eine solche Ausführung wird bevorzugt eingesetzt, um in einer Notfallsituation sicherzustellen, dass der zum Absturz gebrachte und mit der Sicherheitsleine zum Benutzer verbundene Kite zuverlässig ohne Restzug und damit vollständig zugkraftlos bleibt. Diese Ausführung wird ebenfalls bevorzugt verwendet, um die durch einseitigen Zug des Benutzers an der Bar eingeleiteten Steuerbewegungen so direkt wie möglich und für den Benutzer spürbar zu übertragen.

There are various designs for the arrangement and routing of the flying lines between the user and the kite:

• 1) Designs in which the safety line is connected to both flying lines equally or in a ratio determined by deflection of the flying lines. Depending on the design variant, the safety line is used as an additional line or as part of a multi-stranded pull line along or through the bar to the user. If one of several existing strands of the pull line is used as a safety line, the strand used as a safety line is connected to the other strand of the pull line with a deflection to obtain a pre-tension that is independent of the setting of the adjusting element.
• 2) Designs in which the safety line is connected exclusively to one of the flying lines. The flying lines can be connected directly to the adjustment element at the maximum possible length or at a predetermined or adjustable length. This type of design is preferably used to ensure that in an emergency situation the kite that has been brought down and is connected to the user via the safety line remains reliably without residual pull and thus completely without pulling force. This design is also preferably used to transmit the control movements initiated by the user pulling on the bar on one side as directly as possible and in a way that is noticeable to the user.

Disadvantages of existing systems:

1. 1. The disadvantage of the systems described under 1) is that the kite, which is brought down in the buoyant wind flow when the safety system is triggered, can maintain or redevelop a residual pull due to the equal or proportional connection of the safety line to the flying lines. This leads to restrictions in safety for users, particularly in emergency situations in which, for example, control is lost due to injury. There is also the disadvantage that the minimum length of the pull line in these designs is specified by the distance that, with the safety line connected to both flying lines, is sufficient in an emergency to render the kite ineffective in the buoyant air flow if the user has separated from the trapeze loop and the bar. The possibility of specifying the length ratios of the flying lines to the pull line in their "Y" arrangement for the purpose of achieving different tensile force distributions that the user can feel is therefore limited.
2. 2. The disadvantage of the systems described under 2) is that regardless of whether one of the several strands of the pull line (depending on the design) is used as a safety line or an additional safety line, at least the part of the safety line that runs on the user side of the pull line adjustment device is slack depending on the setting of the adjustment device and may sag with an excess length to the tensioned strand of the pull line. This results in the risk of unintentional jamming or connection with other moving elements of the sports equipment or user. To limit such a risk, the known designs are equipped with additional elastic elements, for example an additional rubber line inside the safety line or inside the part of the pull line used as a safety line, which absorbs any excess line caused by adjusting the adjustment element. Such designs result in the disadvantage of an additional component that is inevitably subject to progressive wear during operation due to the external influences of salt, sand, etc. Since the rubber cord in the known designs is typically hidden in the safety cord or, in the case of multi-strand tow cords, hidden together with the safety cord in an additional cover, the state of wear is not visible from the outside. The same disadvantages arise in the systems mentioned under 1) if a safety cord is used in addition to the (single-strand) tow cord.

Object of the invention

The object of the invention is therefore to further develop the arrangement and deflection of the tow lines, the length ratio of which to the flying lines can be largely freely selected, and the safety line(s) in such a way that the line connected to the user and the kite with no remaining tension as a safety line in the event of a safety incident is pre-tensioned as a tow line without the use of further safety-limiting elements, regardless of pre-settings during normal operation of the sports equipment.

Disclosure of the invention

The object of the invention is achieved in that the adjustment line (1.4.1) of the length adjustment element is operatively connected to a second pulling line strand (1.2) via a deflection (1.1.2) connected to at least one flying line (2.1), which, guided by the handlebar (6) with a stop element (1.2.1), is arranged on the user side on a releasable trapeze loop system (4).

In a preferred embodiment, the second pull line strand is directly connected to the adjustment line (1.4.1) of the length adjustment element.

In a further preferred embodiment, the second traction line strand (1.2) is arranged on the first deflection and a coupling line (5.1) is arranged on the length adjustment element (1.4), which is connected to the first deflection (1.1.1) of the traction line (1.1) via a further deflection (5.2) arranged on the flying lines (2.2).

In further preferred embodiments, a movable device for adjusting the distance is arranged on the flying lines and can be locked there at least easily.

Embodiments for the application of the invention are explained below with reference to the accompanying drawings:

• - Kite (8)
• - Lenkstange (6)
• - auslösbares Trapezloopsystem (4)
• - Flugleinen (2.1 und 2.2)
• - Steuerleinen (3.1 und 3.2)
• - Stränge (1.1 und 1.2) der Zugleine
• - Längenjustierelement (1.4)
• - Umlenkung (1.1.1)
• - Stoppelement (1.2.1)
• - Verbindungsleash zu einem Benutzer (7)

1 shows a state-of-the-art design with the following features:

• - Kites (8)
• - Handlebar (6)
• - releasable trapeze loop system (4)
• - Flying lines (2.1 and 2.2)
• - Control lines (3.1 and 3.2)
• - Strands (1.1 and 1.2) of the tow line
• - Length adjustment element (1.4)
• - Redirection (1.1.1)
• - Stop element (1.2.1)
• - Connection leash to a user (7)

The tow line runs with 2 strands (1.1 and 1.2). On the strand (1.1) that is connected to the trapeze loop system (4), a length adjustment element (1.4) is arranged, the actuating line (1.4.1) of which is guided over the deflection (1.1.1). The tow line (1.1.1) is guided over another deflection (1.1.2) and connected to the 2nd strand (1.2) of the tow line.

The pulling forces generated by the kite are transferred via a pulling line to the user (7) connected to the trapeze loop system (4).

Further operating and control forces are transmitted to the handlebar (6) held by the user.

The 2-fold deflection (1.1.1 and 1.1.2) results in a ratio of approximately 4, which gives the user the desired possibility of making a fine adjustment of the relative line lengths with little actuation force.

If the user disconnects from the connection to the tow lines by activating the releasable trapeze loop system (4) and releases the handle from the handlebar, the kite (8) in the exemplary version remains connected to the user exclusively with the flying lines via the tow line strand (1.2), which now acts as a safety line. The resulting change in angle in the buoyant wind flow leads to stalling and the kite (8) falls down under its own weight without any traction. Due to the connection to both flying lines (2.1 and 2.2) maintained by the connection to the tow line strand (1.2), there is a possibility that the crashed kite, lying on the ground or on the water surface, will again develop wind-dependent traction forces and possibly transfer them undesirably to the user.

• - Lenkstange (6)
• - auslösbares Trapezloopsystem (4)
• - Flugleinen (2.1 und 2.2)
• - Steuerleinen (3.1 und 3.2)
• - Stränge (1.1 und 1.2) der Zugleine
• - Längenjustierelement (1.4)
• - Einstellleine (1.4.1)
• - Umlenkung (1.1.1)
• - Umlenkung (1.1.2)
• - Stoppelement (1.2.1)

2 shows the principle of a preferred embodiment of the present invention with the following features:

• - Handlebar (6)
• - releasable trapeze loop system (4)
• - Flying lines (2.1 and 2.2)
• - Control lines (3.1 and 3.2)
• - Strands (1.1 and 1.2) of the tow line
• - Length adjustment element (1.4)
• - Adjustment line (1.4.1)
• - Redirection (1.1.1)
• - Redirection (1.1.2)
• - Stop element (1.2.1)

The tow line runs with 2 strands (1.1 and 1.2). On the strand (1.1) that is connected to the trapeze loop (4), a length adjustment element (1.4) is arranged, the actuating line (1.4.1) of which is guided over the deflection (1.1.1). The second strand (1.2) of the tow line is mounted on the trapeze loop (4) on the user side with the stop element (1.2.1), guided through the handlebar (6) and over another deflection (1.1.2) arranged on the flying line (2.1) and attached to the actuating line (1.4.1) of the length adjustment element.

The pulling forces generated by the kite are transmitted via the strands (1.1 and 1.2) of the pulling line to the user connected to the trapeze loop system (4). Further operating and steering forces are transmitted to the handlebar (6) held by the user.

The deflection (1.1.2) of the flying line (2.1) and the deflection (1.1.1) result in an approximately 2-fold transmission for the lines, which enables the user to adjust the relative line lengths with reduced operating forces.

If the user disconnects from the connection to the tow lines by activating the releasable trapeze loop system (4) and releases the handle from the handlebar, the kite (8) in the embodiment according to the invention remains connected to the user via the strand (1.2) of the tow line, which now acts as a safety line, with only one (2.1) of the flying lines.

In the wind flow that creates lift, the eccentric bearing created in this way also creates a lateral twisting due to the change in angle of the kite's longitudinal axis to the direction of flow, which reliably leads to stalling regardless of the prevailing wind conditions. The kite falls reliably under its own weight without any traction.

Lying on the ground or on the water surface, the crashed kite always turns into a buoyancy-free and largely drag-free position due to its eccentric connection in an attacking wind current.

With the arrangement of the deflections according to the invention, the flying lines and the pulling lines are tensioned during operation of the sports equipment independently of the setting of the length adjustment element.

• - Lenkstange (6)
• - auslösbares Trapezloopsystem (4)
• - Flugleinen (2.1 und 2.2)
• - Steuerleinen (3.1 und 3.2)
• - Stränge (1.1 und 1.2) der Zugleine
• - Längenjustierelement (1.4)
• - Einstellleine (1.4.1)
• - Umlenkung (1.1.1)
• - Umlenkung (1.1.2)
• - Stoppelement (1.2.1)
• - Kopplungsleine (5.1)
• - Umlenkung (5.2)

3 shows the principle of a preferred embodiment of the present invention with the following features:

• - Handlebar (6)
• - releasable trapeze loop system (4)
• - Flying lines (2.1 and 2.2)
• - Control lines (3.1 and 3.2)
• - Strands (1.1 and 1.2) of the tow line
• - Length adjustment element (1.4)
• - Adjustment line (1.4.1)
• - Redirection (1.1.1)
• - Redirection (1.1.2)
• - Stop element (1.2.1)
• - Coupling line (5.1)
• - Redirection (5.2)

The tow line runs with 2 strands (1.1 and 1.2). A length adjustment element (1.4) is arranged on the strand (1.1) that is connected to the trapeze loop (4), the actuating line (1.4.1) of which is guided over the deflection (1.1.1). The second strand (1.2) of the tow line is mounted on the trapeze loop (4) with the stop element (1.2.1) on the user side, guided through the handlebar (6) and over another deflection (1.1.2) arranged on the flying line (2.1) and attached to the first deflection (1.1.1). According to the invention, the coupling line (5.1) is arranged on the first deflection (1.1.1) and is guided back via a further deflection (5.2) which is attached to the flying line (2.2) and fastened to the length adjustment element (1.4).

The pulling forces generated by the kite are transmitted via the strands (1.1 and 1.2) of the pulling line to the user connected to the trapeze loop system (4). Further operating and steering forces are transmitted to the handlebar (6) held by the user.

The 2-fold deflection (1.1.1 and 1.1.2) results in an approximately 4-fold translation, which gives the user the desired possibility of making a fine adjustment of the relative line lengths with significantly reduced operating forces.

If the user disconnects from the connection to the tow lines by activating the releasable trapeze loop system (4) and detaches the handle from the handlebar, the kite (8) in the inventive design remains connected to the user via the tow line strand (1.2), which now acts as a safety line, with only one (2.1) of the flying lines. In the wind flow that creates lift, the eccentric bearing achieved in this way also creates a lateral twist via the angle change of the kite's longitudinal axis to the direction of flow, which reliably leads to stalling regardless of the prevailing wind conditions. The kite falls reliably under its own weight without any traction.

Lying on the ground or on the water surface, the crashed kite always turns into a buoyancy-free and largely drag-free position due to its eccentric connection in an attacking wind current.

With the inventive arrangement of the coupling line (5.1) and the further deflection (5.2) arranged on the 2nd flying line (2.2), the flying lines and the pulling lines are tensioned during operation of the sports equipment independently of the setting of the length adjustment element.

• - Lenkstange (6)
• - auslösbares Trapezloopsystem (4)
• - Flugleinen (2.1 und 2.2)
• - Steuerleinen (3.1 und 3.2)
• - Stränge (1.1 und 1.2) der Zugleine
• - Längenjustierelement (1.4)
• - Einstellleine (1.4.1)
• - Umlenkung (1.1.1)
• - Umlenkung (1.1.2)
• - Stoppelement (1.2.1)
• - Führungsring (1.5)
• - Kopplungsleine (5.1)
• - Umlenkung (5.2)
• - verschiebbarer Abstandhalter (9)

4 shows a preferred embodiment of the present invention in a perspective view with the following features:

• - Handlebar (6)
• - releasable trapeze loop system (4)
• - Flying lines (2.1 and 2.2)
• - Control lines (3.1 and 3.2)
• - Strands (1.1 and 1.2) of the tow line
• - Length adjustment element (1.4)
• - Adjustment line (1.4.1)
• - Redirection (1.1.1)
• - Redirection (1.1.2)
• - Stop element (1.2.1)
• - Guide ring (1.5)
• - Coupling line (5.1)
• - Redirection (5.2)
• - movable spacer (9)

The tow line runs with 2 strands (1.1 and 1.2), each of which has a wear-resistant plastic coating on the user side of the length adjustment element (1.4). A length adjustment element (1.4) is arranged on the strand (1.1) that is connected to the releasable trapeze loop system (4), the actuating line (1.4.1) of which is guided over the deflection (1.1.1). The second strand (1.2) of the tow line is mounted with the stop element (1.2.1) on the user side of the releasable trapeze loop system (4), guided through the handlebar (6) and over another deflection (1.1.2) arranged on the first flying line (2.1) and attached to the first deflection (1.1.1). According to the invention, the coupling line (5.1) is arranged on the first deflection (1.1.1) and is guided back via a further deflection (5.2) which is attached to the flying line (2.2) and is fastened to the length adjustment element (1.4). Furthermore, a guide ring (1.6) is attached to the first deflection, through which both strands of the traction lines are guided at a small distance from one another.

The pulling forces generated by the kite are transmitted via the strands (1.1 and 1.2) of the pulling line to the user connected to the trapeze loop system (4). Further operating and steering forces are transmitted to the handlebar (6) held by the user.

The 2-fold deflection (1.1.1 and 1.1.2) results in an approximately 4-fold translation, which gives the user the desired possibility of making a fine adjustment of the relative line lengths with significantly reduced operating forces.

If the user disconnects from the connection to the tow lines by activating the releasable trapeze loop system (4) and detaches the handle from the handlebar, the kite (8) in the inventive design remains connected to the user via the tow line strand (1.2), which now acts as a safety line, with only one of the flying lines (2.1). In the wind flow that creates lift, the eccentric bearing achieved in this way also creates a lateral twist via the angle change of the kite's longitudinal axis to the direction of flow, which reliably leads to stalling regardless of the prevailing wind conditions. The kite falls reliably under its own weight without any traction.

Lying on the ground or on the water surface, the crashed kite always turns into a buoyancy-free and largely drag-free position due to its eccentric connection in an attacking wind current.

The embodiments according to the invention enable the length adjustment element to be adjusted while the tension of the traction line strands remains constant during operation, regardless of this.

When the trapeze loop system is triggered, the user remains connected to the kite, which has no buoyancy and is largely pressure-free, by means of the second strand of the tow line, which then acts as a safety line, forming a single flying line.

According to the invention, the length adjustment element can be operated with either a 2-fold or a 4-fold ratio of the tensile forces.

Furthermore, according to the invention it is possible to set the position for the effective distance between the flying lines at a short distance from the user and thus to individually adjust the actuation and control forces.

Claims (4)

Pull and safety lines (1) on a large stunt kite (8), with flying lines (2.1 and 2.2) and control lines (3.1 and 3.2), which transmits pulling forces to a user (7) and a handlebar (6) during operation, with a first strand (1.1) of the pull line, on which a length adjustment element (1.4) with an adjustment line (1.4.1) is arranged on a first deflection (1.1.1), characterized in that the adjustment line (1.4.1) is operatively connected via a deflection (1.1.2) connected to at least one flying line (2.1) to a second pull line strand (1.2), which, guided by the handlebar (6), is arranged on the user side with a stop element (1.2.1) on a releasable trapeze loop system (4). Pull and safety line according to Claim 1 , characterized in that the second traction line strand (1.2) is arranged at the first deflection. Pull and safety line according to Claim 2 , characterized in that a coupling line (5.1) is arranged on the length adjustment element (1.4), which is connected to the first deflection (1.1.1) of the towing line (1.1) via a further deflection (5.2) arranged on the flying lines (2.2). Pull and safety line according to one of the preceding claims, characterized in that a spacer (9) is arranged on the flying lines (2) on the kite side of the first deflection (1.1.1), which spacer can be moved along the flying lines and can be secured to at least one of the flying lines (2.1).

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