DE3627774A1 - Locking device for telescopic wishbone booms of a sailboard - Google Patents

Abstract

The invention relates to a locking device for a longitudinally adjustable wishbone boom of a sailboard. The locking is effected by distance sleeves 3 which are loosely pushed onto the inner tubes 2 and by a shaped body 5 which can alternatively be mounted between the distance sleeves. When the inner tubes 2 are pushed in, the outer tube 1 can accommodate the distance sleeves 3 not required and serving as a stop up to the shaped body 5. The tapered and slit shaped body 5, which can alternatively be arranged between the distance sleeves 3, is compressed on the inner tube upon pushing into the outer tube at its narrowed side facing the outer tube. The following distance sleeves 3 are prevented from penetrating at the collar of the shaped body 5 so that locking is effected. <IMAGE>

Description

The invention relates to a locking device to the Length of a telescopic boom for sailing boards safe to adjust.

It is known that every surfer according to the wind strength different sized sails used and a length adjustment baren boom. It is also known that under the Name Vario boom tubes are attached to the fork extend tree. Unfortunately, these pipes are often lost that clamping the sail becomes impossible.

The previously known telescopic fork trees have complicated ones mechanical locking device systems covered by sand or general contamination is unusable after a short time and are expensive to manufacture.

Furthermore, through holes in the jacket of the outside and inside pipe, where resilient bolts take over the actual locking, Break-in points incorporated, which put some surfers at risk if the pipe breaks at sea. This also applies to Constrictions or beads in the insertion tubes.

The invention is therefore based on the object, a length variable ablen boom to create for multiple sail sizes, which is not just a high level of security, but also a light, reliable one and dirt-resistant length adjustment allows, as well as a represents structural simplification.

According to the innovation, the solution to the problem is to

• a) that spacers loose on the inner tube of the boom are plugged in with their outer diameter in the Teles head tube of the fork.  
• b) that a slotted between the spacers Shaped body is attachable, which has a collar, the depending on the position, further penetration into the telescope outer tube prevented.
• c) that the inner tube has a spring at the immersing end element with bolt contains what constitutes a protection against loss and allows the spacer sleeves to be replaced, as well as the fitting when pulling the pipes apart releases the outer tube.

The innovation is based on an exemplary embodiment hand of the drawing explained in more detail. It shows:

Fig. 1 shows the partially drawn boom in view.

Fig. 2 shows the locking device on a larger scale in section.

Fig. 3 shows in detail the shaped body, which serves the Arre tation. The locking device consists of a molded body S , which is made of resilient material Herge and can penetrate into the outer tube of the telescopic tree. Loose spacer sleeves 3 are pushed onto the inner tube 2 . A space is created between the sleeves around the length of the shaped body S. The sleeves 3 are locked depending on the number plus the length of the shaped body S with a pin spring 7 . This pin spring 7 inserted in the inner tube 2 of the boom 1 enables the spacer sleeves to be exchanged.

The lengthening or shortening of the telescopic tree is carried out by as that of surfers initially pulls the inner tubes 2 to the outside, wherein the molded article S is pulled by the pin spring 7 of the outer tube 1 and the molded body S jumps up slightly. The shaped body S can now be easily removed from the inner tube 2 and plugged in a certain position between the spacers. The locking takes place by pushing the inner tubes 2 together.

Due to the conical design of the shaped body, the shaped body S S is pressed together during penetration amount into the outer pipe and clamped to the inner pipe. 2 The federal government of the shaped body S , which is coherent in the outer diameter with the outer tube, prevents its own immersion and that of the subsequent dance sleeves 3 in the outer tube.

• 1 outer tube
  2 inner tube
  3 spacer sleeve
  4 support ring
  5 molded bodies
  6 sealing plugs
  7 spring

Claims (3)

1. Device for locking the length of spars or spars of a telescopic boom for a sailing board, as characterized by

• a) that one or more spacer sleeves are pushed onto the inner or immersing tubes, each of which can strike at the end of the inner tube through a firmly riveted ring,
• b) that a longitudinally slotted conical shaped body can rest arbitrarily on the respective tube between the spacer sleeves.
• c) That the spacer sleeves resting on the inner tubes can be accommodated in the inner space of the outer tubes,
• d) that the shaped body arranged between the spacer sleeves is provided with a collar and is tapered towards the outer tube so that the shaped body rests on insertion into the outer tube against the inner tube and prevents further penetration of the spacer sleeves.

2. Locking device according to claim 1 characterized net that a rest at the free end of the inner tube in the jacket hole is attached where a resilient bolt is replacing sleeves of different lengths. 3. Locking device according to claim 1 characterized net that the molded body is resilient so that the Shaped body pops up when pulling the telescopic tubes apart.