DE10313749A1 - Safety flap hook for kite used in kite surfing, has release mechanism that operates without unreeling when kite is exposed to dangerous situations - Google Patents

Abstract

Arms stay longer in water or in air. When the kite is exposed to dangerous situations, a release mechanism operates without unreeling.

Description

The development of security systems that enables an immediate separation of the rider from the kite, is just in the early stages. There are different systems which are included with the purchase of the kite. You are mostly on the loop (chicken loop) in the trapezoidal hook hooked becomes. Frequent opening mechanisms are Velcro, that when tearing open release a bolt. This then slips out of its holder and the connection between the main line and the chicken loop is broken.

Other options are fixed connections between driver and kite. The kite has mechanical release mechanisms Approved. Examples: Solid Comp

Wichard sailing carabiner

A good description of each Systems, with TÜV function test, can be found in the magazine KITE; Issue 6; October November 2002; Pages 53-59.

To complain about is that there is no uniform Security standard there. With every kite you have to focus on one other trigger mechanism to adjust.

Furthermore, there are some systems False sense of security systems. They do not work under stress. Your trigger forces are way to high. Especially with Velcro and direct Stud cable connections. The release levers, loops are often too small. Even when testing on land you easily miss it. In a real accident you will hurled uncontrollably through the water. It's hard to imagine that in such a situation you can find the trigger mechanism straight away.

• – Schnelles, sicheres Erreichen des Auslösemechanismus gewährleisten
• – Geringe Öffnungskräfte
• – Keine feste Verbindung zwischen Fahrer und Kite → Möglichkeit geben, sich in das Trapez ein- oder auszuhängen (unter Normalumständen, keine Notsituation, da ist ein Aushängen nicht möglich).

Object of the invention:

• - Ensure that the trigger mechanism is reached quickly and safely
• - Low opening forces
• - No fixed connection between the rider and the kite → give the possibility to hook in or out of the harness (under normal circumstances, no emergency situation, so it is not possible to unhook).

These tasks are carried out by a Device with the features of claim 1 solved.

In the event of a fall, the driver must possibility have the opening mechanism of the To reach folding hook. It does not matter whether he is using the left or right hand triggers his safety system. The Folding hook makes this possible. The rip cord is for the left and right hand equally accessible.

Furthermore, the fact that the No "fixed" connection between The kite and rider is the choice between 2-line and 4-line kites. The security system remains the same. It’s also psychologically important for the beginner that after climbing onto the surfboard, it is still out of the trapeze unhook can.

Since the hook is not rotatable, there is there is no danger that the rope in the "Switch Stance" (driver stands with the back to the kite) can slip out of the hook.

Due to the low opening forces guaranteed that the driver can free himself from the kite in extreme situations.

Embodiments are in the Drawings and are described in more detail below.

Show it

1 : a perspective view of the trapezoidal hook,

2 : a side view and a top view (underside) with hidden lines,

3 : Top view (bottom), side view of the hook for claim 3.

The hook ( 1 ) is via a welded transverse axis ( 2 ), which is in a socket ( 3 ), movable with the trapezoidal bracket ( 4 ) connected. Rifle ( 3 ) is with the main pipe ( 5 ) welded. The hook ( 1 ) cannot open by itself. There is an angled (115 °) round steel on it ( 6 ) welded. Its end has a thickening with a defined radius (build-up welding). This corresponds to the rolling radius of the rope pulley ( 7 ), which prevents the hook from opening by itself. The pulley ( 7 ) is on the axis ( 8th ) stored in the two flat steels ( 9 ) is welded in. They are with socket ( 10 ) screwed. Distance between the screw connection and the pulley axis ( 8th ) and rope pulley diameter define the radius of thickening of round steel ( 6 ). Rifle ( 10 ) is with trapezoidal bracket ( 4 ) welded. On the axis ( 8th ) is a mobile shekel ( 11 ) built-in. It goes axially over the pulley in a U-shape. The shekel takes a second screwed shekel ( 12 ) on which the rip cord ( 13 ) is attached. It runs on the left and right side of the harness bracket ( 4 ) and is in each case through the eyelets ( 14 ) connected to him. To stiffen the ripcord there is a hose on each side ( 15 ) through which the line runs. To reinforce the overall construction, two round tubes ( 16 ) in the trapezoidal bracket ( 4 ) welded and with the main pipe ( 5 ) welded. The kite's safety line is inserted into the eyelet ( 17 ) attached.

If you pull the ripcord under load ( 13 ) in the direction of movement of the rope pulley ( 7 ), it rolls over the radius of the round steel ( 6 ). It releases the hook from a certain point. This opens and the driver is separated from the kite.

As an alternative to this construction, the pulley ( 7 ) omitting. Then metal rubs against metal. This also works, but as the weight increases, the coefficient of friction also increases. The Release forces increase more than when rolling with a rope pulley.

Claims (4)

Safety system for kitesurfing, which relieves the arms during a long stay on the water or in strong wind (same task as with any conventional trapeze) and allows a deliberate release from the kite in dangerous situations, characterized in that the release mechanism with a rolling movement (static friction ) is working. Device according to claim 1, characterized in that the rope pulley ( 7 ) is not made of metal, but of high quality plastic. Device according to claim 1 or 2, characterized in that the hook ( 1 ) and the round steel ( 6 ) are bent from one piece. Device according to one of the preceding claims, characterized in that the round steels ( 16 ) are omitted and the main pipe ( 5 ) is welded into the center of the trapezoidal bracket (weld the front and rear of the trapezoidal bracket).