SLIDABLE ARM SUPPORT

摘要

A slidable arm support device includes a main body (1), fixed seats (21, 22, 23, 24) and rolling balls (3). The main body (1) is composed of a fixing portion (11), connecting parts (12,12') bent upward from both sides of the fixing portion (11) and two fixture parts (13,13') extending from the connecting parts (12,12'). The two fixture parts (13,13') are disposed oppositely and form an opening for arm passing in and out. The fixing portion (11) has grooves (111,111', 112, 112') in its lower surface. The fixed seats (21, 22, 23, 24) are inset into the grooves (111,111', 112, 112'). The rolling balls (3) are set into the fixed seats (21, 22, 23, 24).