An assembly method for an operating device, comprising:
- a stacking process of stacking a contact terminal sheet formed in accordance with a plurality of exposed operation parts and including a plurality of contact terminals for detecting an operation state of each of the operation parts, a flexible cable including a plurality of land parts and wire parts connected to the plurality of connect terminals, and a plate-like frame supporting the contact terminal sheet and the flexible cable;
- and
- a folding process of folding a contact terminal folded part, which is provided in the contact terminal sheet and includes a contact terminal for a side surface, corresponding to a side surface operation part disposed in a side surface of the device, and a land folded part, which is provided in the flexible cable and includes the land part connected to the contact terminal for a side surface, so that the contact terminal folded part and the land folded part are supported by a receiving part for a side surface formed by folding the frame which receives a pressing operation to the side surface operation part.