| CPC A63C 9/12 (2013.01) | 17 Claims |

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1. A heel unit for a gliding board binding, comprising:
a base comprising a fastening arrangement for fastening to a gliding board;
a binding body, wherein the binding body is rotatable relative to the base about a release axis of rotation extending orthogonally to a gliding board plane;
coupling means arranged on the binding body, wherein the coupling means are configured to engage with a heel portion of a gliding board boot in a downhill position of the gliding board binding to securely hold the gliding board boot on the gliding board binding, the coupling means protruding in a gliding board longitudinal direction from the binding body in the downhill position of the gliding board binding; and
an Mz release mechanism which is designed to preload the coupling means into the downhill position so that, in the downhill position, the coupling means are freed from the engagement with the gliding board boot upon action of a force exceeding a predetermined release force, and so that the coupling means move out of the downhill position and into a release position by means of a rotational movement of the binding body about the release axis of rotation,
wherein the Mz release mechanism comprises a spring arrangement having a spring means that determines the predetermined release force and a cable element,
wherein the Mz release mechanism comprises a cam body arranged on the binding body, wherein the cam body is configured in the downhill position, to enter link engagement with a mating contour of a cam surface provided on the base,
wherein the spring arrangement is configured to exert a tractive force on the cam body to draw the cam body into link engagement with the mating contour of the cam surface, and
wherein the cable element is configured to transfer the tractive force exerted by the spring arrangement onto the cam body.
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