Framework, particularly a tent framework, with its deployment and maintaining mechanism for maintaining it in the deployed position, said framework comprising at least one post and a sleeve sliding along the post, the sleeve being adapted to be immobilized relative to the post in a locking position; the mechanism comprising: - maintaining means (10, 11, 21, 31) arranged on the sleeve on the one hand and on the post on the other hand, adapted to engage so as to maintain the sleeve in an intermediate position, distant from said locking position, said maintaining means (10, 11, 21, 31) including respective hooking means (21, 31) arranged on the post on the one hand and on the sleeve on the other, and - movement means (10, 11), including a demultiplication, for moving the sleeve from said intermediate position to said locking position, said movement means (10, 11) comprising a connecting rod equipped with holding means and a handle pivotally mounted on the sleeve, said rod being pivotally mounted on the handle at a location closest to the pivotal mounting location of the handle on the sleeve than the free end of the handle, so that this handle constitutes a demultiplication lever; characterized in that - said respective hooking means (21, 31) comprises two spaced housings arranged in a part fixed to the post and two lugs arranged on said corresponding connecting rod; and - the mechanism comprises automatic engagement means for enabling these hooking means (21, 31) to automatically come into mutual engagement upon the arrival of the sleeve in said intermediate position, said means automatic engagement means including - a spring for normally positioning said handle and said connecting rod such that said lugs are placed at a predetermined distance from the post when the sleeve slides along of the post; and - a ramp provided on said part fixed to the post such that this part can automatically receive said lugs and guiding the latter toward said housing. - maintaining means (10, 11, 21, 31) arranged on the sleeve on the one hand and on the post on the other hand, adapted to engage so as to maintain the sleeve in an intermediate position, distant from said locking position, said maintaining means (10, 11, 21, 31) including respective hooking means (21, 31) arranged on the post on the one hand and on the sleeve on the other, and - movement means (10, 11), including a demultiplication, for moving the sleeve from said intermediate position to said locking position, said movement means (10, 11) comprising a connecting rod equipped with holding means and a handle pivotally mounted on the sleeve, said rod being pivotally mounted on the handle at a location closest to the pivotal mounting location of the handle on the sleeve than the free end of the handle, so that this handle constitutes a demultiplication lever; - said respective hooking means (21, 31) comprises two spaced housings arranged in a part fixed to the post and two lugs arranged on said corresponding connecting rod; and - the mechanism comprises automatic engagement means for enabling these hooking means (21, 31) to automatically come into mutual engagement upon the arrival of the sleeve in said intermediate position, said means automatic engagement means including - a spring for normally positioning said handle and said connecting rod such that said lugs are placed at a predetermined distance from the post when the sleeve slides along of the post; and - a ramp provided on said part fixed to the post such that this part can automatically receive said lugs and guiding the latter toward said housing.