Powder conveyance device and image forming apparatus including a conveyor and first and second conveyance tubes

A powder conveyance device, comprising:

• a conveyor to rotate in a rotation direction to convey powder;
• a first conveyance tube accommodating the conveyor;
• a second conveyance tube extending in an angled direction that is angled with respect to the first conveyance tube, the second conveyance tube communicating with the first conveyance tube;
• a swing member disposed inside the second conveyance tube, the swing member to swing in accordance with rotation of the conveyor,
• the swing member having one end that is detachably attached to the conveyor, the one end to be detached from the conveyor in a detaching direction;
• and
• a restrictor disposed inside one of the first conveyance tube and the second conveyance tube, the restrictor to restrict motion of the swing member in the detaching direction,
• wherein:
• the conveyor includes a shaft,
• the swing member includes a hook disposed at the one end of the swing member, the hook to engage the shaft of the conveyor,
• the shaft of the conveyor includes:
• a shaft portion;
• and
• an eccentric portion having a shaft center that is eccentric with respect to a shaft center of the shaft portion, and
• the hook engages the eccentric portion loosely.

A powder conveyance device, comprising:

• a conveyor to rotate in a rotation direction to convey powder;
• a first conveyance tube accommodating the conveyor;
• a second conveyance tube extending in an angled direction that is angled with respect to the first conveyance tube, the second conveyance tube communicating with the first conveyance tube;
• a swing member disposed inside the second conveyance tube, the swing member to swing in accordance with rotation of the conveyor,
• the swing member having one end that is detachably attached to the conveyor, the one end to be detached from the conveyor in a detaching direction;
• and
• a restrictor disposed inside one of the first conveyance tube and the second conveyance tube, the restrictor to restrict motion of the swing member in the detaching direction,
• wherein the restrictor is detachably attached to the one of the first conveyance tube and the second conveyance tube,
• the powder conveyance device further comprising a cover mounting the restrictor,
• wherein the first conveyance tube has a through-hole covered by the cover, and
• wherein the restrictor is inserted into the first conveyance tube through the through-hole.