计数器及具有此计数器的分配器;A COUNTER AND A DISPENSER PROVIDED WITH SUCH COUNTER

摘要

一种计数器，其包含：一具有第一指标的第一环构件，及一具有第二指标的第二环构件，第一及第二环构件的每一者为可旋转的而环绕一共同轴线增量，第一及第二指标的一或是两者指示一计数；用于旋转该第一环构件的一驱动机构；及一耦合机构，用于可释放地耦合该第一环构件至该第二环构件，当耦合时，允许该第一及第二环构件配合地旋转，及当脱离时，允许该第一环构件的独立旋转；其中该耦合机构包含第一及第二接合手段，其中该第一接合手段包含一臂，其具有一槽及一接触端部，该第一接合手段为可相对于该轴线径向向外地及径向向内地移动。; a drive mechanism for rotating said first ring member; and a coupling mechanism for releasably coupling said first ring member to said second ring member, to allow said first and second ring members to rotate cooperatively when coupled and to allow independent rotating of said first ring member when not coupled; wherein said coupling mechanism comprises first and second engagement means, wherein said first engagement means comprise an arm having a slot and a contact end, and said first engagement means are movable radially outwardly and radially inwardly relative to said axis.