[Problem to be solved]An air cell component, etc., are provided that are capable of preventing bottoming of an air cell having a support surface for supporting a body without regard to: the shape or configuration of the air cell； or the usage pattern such as an internal pressure, etc.[Means for solving the problem]An air cell component that supports, in an air mattress, an air cell having a support surface onto which a user’s body is placed, the air cell component comprising: a plurality of cells that are made of a flexible sheet material and are inflated into a cylindrical shape by enclosing air inside the plurality of cells, wherein the plurality of cells are arranged in parallel with each other； and at least one coupling part that connects two neighboring cells among the plurality of cells with each other, wherein, when air is enclosed in the plurality of cells, a concave portion is formed between a plane with which outer peripheries of the plurality of cells make contact and a surface of the at least one coupling part, part of the air cell being capable of being placed in the concave portion.本發明之課題係提供一種氣囊零件等，能不論設有支撐身體之支撐面的氣囊之形狀或結構、或是內壓等的使用形態如何，皆可預防觸底。作為解決手段之氣囊零件，係在充氣床墊支撐著氣囊，該氣囊具有承載使用者之身體的支撐面；氣囊零件，具備：複數個囊體，由具有可撓性的薄片材料形成，藉由在內部封入氣體而膨脹成筒狀，且配置成相互平行；以及至少1個連結部，將該複數個囊體當中相鄰之2個囊體彼此連接；在將氣體封入複數個囊體的情況下，於複數個囊體之外周面所相切的平面、與至少1個連結部的表面之間，形成可配置氣囊之一部分的凹部。
