Patent ID: 11958710
Assignee: SHARP KABUSHIKI KAISHA
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 8:
9. A sheet detection device comprising:
an actuator that is swingably in contact with a sheet;
a rotary shaft that supports the actuator and rotates with the actuator;
a detection piece that is supported by the rotary shaft and is rotatable therewith; and
a detection sensor a detection area of which overlaps a rotation trajectory of the detection piece, wherein
the detection piece includes a first detection piece integrally provided on the rotary shaft and a second detection piece attached to the first detection piece via a biasing member,
the second detection piece is rotatable in conjunction with the first detection piece under a biasing force of the biasing member,
when the second detection piece is brought into contact with a ceiling disposed at an upper part of the rotary shaft, the second detection piece stops further rotation, while the first detection piece is rotatable together with the rotary shaft against the biasing force,
the second detection piece is provided to be rotatable with respect to the rotary shaft,
the biasing member biases the second detection piece, with respect to the first detection piece, upward in a direction of rotation around the rotary shaft, and
the biasing member is a kick spring having a coil externally attached to the rotary shaft and a locking portion extending from the coil and locked by the first detection piece and the second detection piece, respectively, and is disposed in a contracted state.