Abstract: The present invention discloses a winding device that includes a screen, a shaft portion to which one end of the screen is fastened, a rotary shaft member that fits to an end portion of the shaft portion so that the rotary shaft member is rotated around a rotation axis along an axial direction of the shaft portion, and a biasing portion that biases the rotary shaft member in a rotation direction for winding the screen. A relative rotation restriction structure and a movement restriction structure are formed on a fitting portion between the shaft portion and the rotary shaft member. The relative rotation restriction structure restricts a relative rotation of the shaft portion with respect to the rotary shaft member. The movement restriction structure restricts a movement of the shaft portion in the axial direction with respect to the rotary shaft member.

Abstract: The present invention discloses a winding device that includes a screen, a shaft portion to which one end of the screen is fastened, a rotary shaft member that fits to an end portion of the shaft portion so that the rotary shaft member is rotated around a rotation axis along an axial direction of the shaft portion, and a biasing portion that biases the rotary shaft member in a rotation direction for winding the screen. A relative rotation restriction structure and a movement restriction structure are formed on a fitting portion between the shaft portion and the rotary shaft member. The relative rotation restriction structure restricts a relative rotation of the shaft portion with respect to the rotary shaft member. The movement restriction structure restricts a movement of the shaft portion in the axial direction with respect to the rotary shaft member.

Abstract: The present invention discloses a shading device includes a screen, a shaft portion having a lock portion to be locked, a biasing mechanism, a locking member that is engaged at a lock position with the lock portion, and a housing in which the end portion of the shaft portion is inserted. The housing has a sliding guide portion in which the locking member is slid. The sliding guide portion is capable of guiding the locking member in a direction passing through the lock position and a lock release position, and has a lock position engagement portion for stopping the locking member from sliding at the lock position. The locking member includes a slide engagement portion that engages with the lock position engagement portion at the lock position and an operating portion that can be flexed to release the slide engagement portion from the lock position engagement portion.

Abstract: The present invention discloses a shading device includes a screen, a shaft portion, a case including a wall portion having a hole so that an end portion of the shaft portion is inserted into the hole while a first clearance is formed, the case including a side face portion having an opening so that the shaft portion is entered in a housing position from a direction different from an axial direction of the shaft portion when the shaft portion is located at the housing position, a biasing mechanism that biases the screen toward the shaft portion, and a shaft support portion that is inserted into the first clearance formed between the hole of the wall portion and the end portion of the shaft portion to prevent the end portion of the shaft portion from moving in the direction different from the axial direction.

Abstract: The present invention discloses a shading device includes a screen, a shaft portion having a lock portion to be locked, a biasing mechanism, a locking member that is engaged at a lock position with the lock portion, and a housing in which the end portion of the shaft portion is inserted. The housing has a sliding guide portion in which the locking member is slid. The sliding guide portion is capable of guiding the locking member in a direction passing through the lock position and a lock release position, and has a lock position engagement portion for stopping the locking member from sliding at the lock position. The locking member includes a slide engagement portion that engages with the lock position engagement portion at the lock position and an operating portion that can be flexed to release the slide engagement portion from the lock position engagement portion.