A kind of forehead of breathing mask regulation free type supports rest device,Espespecially a breathing mask upper end stretch set cradle portion end end installing one have volume pad,And can elastic automatic entrance-exit neck pad portion part,The neck pad portion part includes stretching to set its end and can buckle to the pipe portion being installed with set by what cradle portion upper end in hole portion on front side of its volume pad,And this be installed in hole portion installing one can be to the elastic element that the outside elasticity of neck pad portion part pushes； Other than allowing mask to wear and to form the state of three-point mount,More allow the different users of different forehead forms,Through can elasticity it is automatic before the neck pad portion part retreated of Hou,And on comfortable docile what forehead,Its correctness can be maintained by enabling mask wear position,And mitigate mask to the pressure at the bridge of the nose,It is also more avoided that the generation of gas leakage simultaneously.一種呼吸面罩免調式的額頭抵托裝置，尤指一呼吸面罩上端伸設的支架部端末裝設一具有額墊、而可彈性自動進退的額墊部件，該額墊部件包括其額墊前側伸設一其末端可扣抵於支架部上端所設的容設孔部上的管部，並在該容設孔部內裝設一可對額墊部件向外彈性抵推的彈性元件；除了讓面罩配戴形成三點固定的狀態外，更讓不同額頭形態的不同使用者，透過可以彈性自動前後進退的額墊部件，而舒適的服貼於額頭上，令面罩配戴位置可以維持其正確性，並減輕面罩對鼻樑處的壓力，同時也更能避免漏氣的發生。
