| 摘要 |
An easy-to-design rotary operation type electronic component is provided. The component includes a columnar control shaft; a shaft supporter having a circular through shaft hole; an electrical signal control section which is attached to one end of the shaft supporter and allows an electrical signal to be controlled by rotary operation of the control shaft; and a cylindrical spring which is held in a spring holding space formed between the outer periphery of the control shaft and the inner periphery of the through shaft hole, and has a ring shape with an opening cut in the direction of the central axis. The cylindrical spring includes a plurality of leaf spring portions which extend in the direction of the central axis of the control shaft, are connected together in the circumferential direction of the control shaft, and are arranged on the outer periphery of the control shaft. The plurality of leaf spring portions are curved at their central areas in the length direction to project toward the radially outer side of the cylindrical spring, are placed resiliently between the outer periphery of the control shaft and the inner periphery of the through shaft hole, and are held stretchably in the direction of the central axis by the resulting pressing forces. This structure allows the number of leaf spring portions and the largest amount of bending of the leaf spring portions to be specified independently of each other. |
