Sheet conveying apparatus and image forming apparatus

A sheet conveying apparatus, comprising:

• a first conveying portion which conveys a sheet;
• a second conveying portion which nips and conveys the sheet, the second conveying portion being arranged downstream of the first conveying portion in a sheet conveying direction;
• a shutter member including a plurality of abutment surfaces against which a leading edge of the sheet conveyed by the first conveying portion abuts to correct a skew feed of the sheet, the plurality of abutment surfaces being formed in a peripheral direction of the shutter member, the shutter member being pressed by the conveyed sheet to rotate;
• and
• an urging portion which provides the shutter member with an urging force for positioning one abutment surface of the plurality of abutment surfaces at an abutment position at which the leading edge of the sheet conveyed by the first conveying portion abuts against the one abutment surface of the shutter member,
• wherein the urging portion comprises:
• a first rotary member connected to a rotary shaft of the shutter member;
• a second rotary member connected to the first rotary member so as to rotate at a speed ratio of the second rotary member to the first rotary member when the first rotary member rotates, wherein the speed ratio is the same number as a number of the plurality of abutment surfaces;
• and
• an urging spring connected to the second rotary member, the urging spring urging the second rotary member so as to generate a reaction force exerted on the sheet when the shutter member is pressed by the sheet conveyed by the first conveying portion to rotate in a rotation direction, and the urging spring switching a direction of an urging force exerted on the second rotary member to a direction of rotating the shutter member in the rotation direction after the leading edge of the sheet is nipped by the second conveying portion while rotating the shutter member, to position another abutment surface against which a succeeding sheet abuts at the abutment position.