A knob and a massager (7) using the knob are disclosed. The knob comprises a base (1), an upper cover (2) covering on the base (1) and fixedly connected with the base, and a buckle (3) used to rotate the base (1) and the upper cover (3). The buckle (3) is hinged with the upper cover (2). The upper cover (2) is provided with a clamp component used to prevent the buckle (3) from shaking. The upper cover (2) is provided with a storage groove (21). The clamp component comprises a spring (4) disposed in the storage groove (21) and two groups of push components (5) respectively disposed on two ends of the spring (4). Each group of the push component (5) comprises a first rotating shaft (51) and a second rotating shaft (52). One end of the first rotating shaft (51) is provided with a first concave-convex surface (511), and one end of the second rotating shaft (52) is provided with a second concave-convex surface (521). The first concave-convex surface (511) and the second concave-convex surface (521) are engaged with each other. The other end of the first rotating shaft (51) is fixedly connected with the buckle (3). The other end of the second rotating shaft (52) extends into one end of the spring (4) and is clamped in the spring (4). When the knob is not being used, the buckle (3) is flush with the upper cover. When the knob is being used, the buckle (3) is overturned to a position perpendicular to the upper cover (2). The knob is convenient to adjust and suitable for apparatus having requirements on surface smoothness.本發明係一種旋鈕,包括底座、蓋合於底座上並與之固定連接的上蓋及用於轉動底座與上蓋的環扣,環扣與上蓋鉸接。上蓋內設有容置槽,卡固組件設於容置槽內的彈簧及分別位於彈簧兩端的兩組抵推元件,各組抵推元件包括第一轉軸的一端具有第一凹凸面,第二轉軸的一端具有第二凹凸面,第一轉軸的另一端與環扣固定連接,第二轉軸的另一端卡伸入彈簧的一端內。旋鈕不需調節時環扣與上蓋平齊,需調節時翻轉至與上蓋垂直的位置,調節方便且適用於對表面平整有要求的家電或機器。本發明還提供了一種採用上述旋鈕的按摩器。1‧‧‧底座2‧‧‧上蓋21‧‧‧容置槽211‧‧‧通孔3‧‧‧環扣31‧‧‧插軸311‧‧‧止擋面4‧‧‧彈簧5‧‧‧抵推元件51‧‧‧第一轉軸511‧‧‧第一凹凸面512‧‧‧插孔52‧‧‧第二轉軸521‧‧‧第二凹凸面522‧‧‧防轉邊緣523‧‧‧凸軸6‧‧‧填充條
