An assembly of a buckle mechanism and blade. The buckle mechanism includes a housing surrounding a guide supported by a base. The guide engages a fastening surface of the blade with the lock surface of a projection of the base and has at least one wall defining a void, which is positionable in a first position so that the projection occupies at least a portion of the void and a second position so that the projection is disengaged from the void. The base has a surface and a projection extending away from the surface. A biasing member locates the guide to a first position in which the blade engages the projection and opposes movement of the guide to a second position in which the blade disengages from the projection. The blade is secured to and released from the buckle mechanism by inserting the blade into the guide; engaging the fastening surface of the blade with the lock surface of the projection; moving the fastening surface of the blade by the guide in a first direction substantially oblique to the planar surface to disengage the fastening surface of the blade from the lock surface of the projection; and removing the blade from the guide in a second direction substantially parallel to the planar surface of the base.
