Holder device

A holder device comprising:

• a holder portion configured to hold an item;
• and
• a support portion configured to support the holder portion, wherein
• the holder portion is coupled to the support portion in such a manner as to be movable relative to the support portion,
• a first joint portion provided in the support portion is locked to a second joint portion provided in the holder portion such that a relative movement of the holder portion to the support portion is restricted,
• one of the first joint portion and the second joint portion is movable in directions toward and away from the other of the first joint portion and the second joint portion, and the one of the first joint portion and the second joint portion is urged by an urging member to a side where the one of the first joint portion and the second joint portion contacts the other of the first joint portion and the second joint portion,
• the one of the first joint portion and the second joint portion is provided with an operating portion configured to move the one of the first joint portion and the second joint portion in the direction away from the other of the first joint portion and the second joint portion against an urging force of the urging member,
• the holder portion is rotatably coupled to the support portion through a rotation shaft,
• the second joint portion includes a plurality of holder-side tooth portions arranged in a circumferential direction with the rotation shaft being a center,
• the first joint portion includes a plurality of support portion-side tooth portions, each of which meshes with and is locked to a corresponding one of the holder-side tooth portions,
• each of the holder-side tooth portions extends to be inclined with respect to a central axis of the rotation shaft such that the holder-side tooth portion is inclined toward the first joint portion in a direction toward one side in a direction of the central axis of the rotation shaft, and
• each of the support portion-side tooth portions extends to be inclined with respect to the central axis of the rotation shaft such that the support portion-side tooth portion is inclined toward the second joint portion in a direction toward the other side in the direction of the central axis of the rotation shaft.