To enable a gear operatively linked to an accelerator grip to smoothly rotate.
A first gear 39 operatively linked to an accelerator grip 22 is provided, and an opening sensor 54 is provided in a second gear 40 engaged with the first gear. The first gear 39 includes a gear projected part 393 projected on the accelerator grip 22 side, and the accelerator grip 22 includes a pipe recessed part 223 formed on a first gear part 39 side. The gear projected part 393 and the pipe recessed part 223 are engaged with each other via a metal spring holder 53. The spring holder 53 for holding the return spring 52 includes a carrier strap peg 532 engaged with the pipe recessed part 223, and a holder recessed part 531 included in the carrier strap peg 532 and engaged with the gear projected part 393. Erect parts 531a constituting the carrier strap peg 532 and a connection part 531b connecting the erect parts 531a form the holder recessed part 531.
KASHIWABARA YUJI
GUNJI TORU
ASAHI DENSO CO LTD
Kaori Tanaka
Sanji Tanabe