Shoulder module for an exoskeleton structure

A shoulder module for an exoskeleton structure, the shoulder module being designed to connect an elbow module attached to an arm of a user to a back module attached to a back of the user, the shoulder module comprising:

• a plurality of connecting parts, and
• a first pivot connecting two of the plurality of connecting parts while allowing rotation of one of the two connecting parts with respect to the other of the two connecting parts according to a first axis of rotation, during an abduction or adduction movement of a shoulder of the user,
• wherein the plurality of connecting parts include a first connecting part comprising two sub-parts mounted slidingly with respect to one another by a first slideway, the sliding of the two sub-parts with respect to one another by the first slideway allowing shortening of the first connecting part during rotation of the elbow module with respect to the back module caused by the abduction movement of the shoulder of the user and allowing lengthening of the first connecting part during rotation of the elbow module with respect to the back module caused by the adduction movement of the shoulder of the user, and
• wherein the first slideway comprises an elastic return element elastically opposing a separation of the two sub-parts with respect to one another leading to the lengthening of the first connecting part.