Patent ID: 8690169

Claim:
Detachable roller means, comprising: a roller seat, and a roller assembly, wherein the roller assembly and the roller seat are detachably connected to each other, wherein the roller seat includes: a penetration opening, a guide extending in a transverse direction with respect to the penetration opening, the penetration opening being arranged on an upper side of the roller seat, a button plate that has been pre-tensioned by a spring is guided in the guide, and the button plate being integrally provided with a button arm which extends through a rectangular-shaped button through hole cut into a flat front face of the roller seat, the button arm being actuated by being pushed from outside, and the button plate being displaceable along the guide by actuating the button arm, wherein the roller assembly includes: a roller holder, and a roller rotatably mounted in the roller holder about a roller axis, the roller holder including: a lug boss on an upper side thereof, and a shaft projecting from the lug boss and serving to insert into the penetration opening, an upper stop arranged on the shaft, wherein in a mounting status, the lug boss of the roller assembly is abutted against an upper surface of a bottom of the roller seat, and when viewed in an insertion direction of the shaft, the button plate is seen to be engaged in front of the upper stop of the roller assembly in a spring-pretensioned manner, and the button plate is able to be disengaged from the upper stop in a direction opposite to a spring pretensioned position.