Abstract:
A damper device for retarding pivotal advancement of a hinged wall piece towards a hinging wall piece includes a tubular housing adapted to be mounted on one of the hinged and hinging wall pieces, a resisting seat with a resisting end, a position shifting mechanism disposed to couple the resisting seat to the housing such that the resisting seat is retainingly shiftable relative to the housing to permit movement of the resisting end, and a damper unit which has impacted and abutment ends and which is compressible such that, upon being pushed by an impact force, the impacted end is thrust towards the abutment end so as to acquire a damping force to counteract the impact force. The abutment end is engaged and moved with the resisting end for adjustment of the damping force.