Secondary adjusting structure

The utility model discloses a secondary adjusting structure which comprises a first adjusting area and a second adjusting area which are arranged on the nose and the mouth of a human body. The first adjusting part is movably connected to the first adjusting area; the first adjusting part is movably connected to the first adjusting area, the second adjusting part is movably connected to the second adjusting area, the nose and the mouth of the human body are covered with the first adjusting area and the second adjusting area respectively, and one area can be adjusted independently through the first adjusting part and the second adjusting part which are arranged on the first adjusting area and the second adjusting area respectively. The air inlet and the air outlet can be accurately controlled through the two simultaneous adjustment modes, and compared with an existing unified adjustment mode, the adjustment precision is higher. 本实用新型公开了一种二次调节结构，包括：设置在人体鼻部与口部上的第一调节区与第二调节区；活动连接在所述第一调节区上的第一调节件；活动连接在所述第二调节区上的第二调节件，