Lever device and working machine

A lever device comprising:

• a base;
• a support shaft provided on the base;
• a movable bracket and a lever which are supported on the support shaft such that the movable bracket and the lever are pivotable between a lowered position and a raised position, the raised position being a position of the movable bracket and the lever pivoted upward from the lowered position;
• at least one first engagement portion provided on the movable bracket;
• at least one second engagement portion provided on the lever;
• a cam member to engage with the at least one first engagement portion and the at least one second engagement portion, the cam member being attached to the support shaft such that the cam member is movable in a direction of an axis of the support shaft but not rotatable about the axis of the support shaft;
• and
• a biasing member to bias the cam member in a direction that allows the cam member to engage with the at least one first engagement portion and the at least one second engagement portion;
• wherein
• the at least one first engagement portion is configured to, when the movable bracket and the lever are in the lowered position and when the movable bracket and the lever are in the raised position, engage with the cam member to restrict the movable bracket from pivoting;
• and
• the at least one second engagement portion is configured such that, when the lever is caused to pivot upward from the lowered position or pivot downward from the raised position, the at least one second engagement portion causes the cam member to move against the biasing member to disengage the cam member from the at least one first engagement portion.