Patent ID: 7232086

Claim:
A spinning-reel oscillating device for axially oscillating a spool in cooperation with handle rotation via a spool shaft, the handle rotation being transmitted to a master gear that is attached to a master gear shaft for rotating a rotor in cooperation with the handle rotation, a fishing line being adapted to be wound on the spool by the rotor rotatably attached to a reel unit, the spinning reel being adapted to be attached to a fishing rod, the spinning-reel oscillating device comprising: a driving gear adapted to be arranged on the master gear shaft so as to be spaced apart from the master gear that is attached to the master gear shaft; a cam gear that has a cam on its side surface and is arranged on a fishing rod attachment side within the spinning-reel oscillating device relative to the master gear shaft, the cam gear being adapted to be attached to the reel unit so as to be rotatable about a first shaft in cooperation with the driving gear, the first shaft being substantially parallel to the master gear shaft; a slider that has a cam receiving portion formed to engage with the cam of the cam gear, the slider being attached to the rear of the spool shaft such that the spool shaft and the slider are relatively immovable at least in the axial direction; and a guiding portion that is provided in the reel unit and formed to guide the slider such that the slider is movable in the axial direction relative to the guiding portion.