Coupling system, assembly of an equipment rigidly connected to a user and a coupling system and kiteboarding kite bar

A coupling system for coupling a piece of equipment rigidly connected to a user to at least one rigging strand, the coupling system comprising:

• a central body made up of two parts configured to be assembled with one another via an attachment means, the central body having an end on the rigging strand side configured for the connection to the at least one rigging strand and an opposite end on the user side;
• a fastener comprising a first end and a second end, the fastener being configured to be attached releasably to the piece of equipment rigidly connected to the user;
• a shell configured to at least partially cover the side surface of the central body;
• and
• at least one means for blocking the fastener second end configured to cooperate with the shell to releasably block the second end of the fastener at the user side end of the central body,
• the shell being translatable on the side surface of the central body and being connected to the central body via at least one elastic recall means, such that, in a position urged away from the elastic recall means in which the shell does not cover the at least one blocking means, the second end of the fastener is configured to be inserted in/removed from the at least one blocking means and, in a position urged alongside the elastic recall means in which the shell covers the at least one blocking means and when the second end of the fastener is arranged in the at least one blocking means, the at least one blocking means is configured to block the second end of the fastener in the coupling system.