Abstract: Included are: a main body including an installation part in which a cartridge housing a liquid for treating a test substance contained in a specimen is installed and a detector configured to detect the test substance treated with the liquid within the cartridge installed in the installation part; a lid part arranged rotatably on the main body about a shaft so as to open and close the installation part; a biasing part biasing the lid part in an opening direction; and a plurality of regulators each generating resistance against a biasing force in the opening direction at different timing during an opening motion of the lid part.

Abstract: Included are: a main body including an installation part in which a cartridge housing a liquid for treating a test substance contained in a specimen is installed and a detector configured to detect the test substance treated with the liquid within the cartridge installed in the installation part; a lid part arranged rotatably on the main body about a shaft so as to open and close the installation part; a biasing part biasing the lid part in an opening direction; and a plurality of regulators each generating resistance against a biasing force in the opening direction at different timing during an opening motion of the lid part.

Abstract: A packaging box includes a shelf portion which partitions an interior of the packaging box into an upper space and a lower space, an inner flap which is located above the shelf portion as an inner lid and which is bendable to a closed position where the inner flap faces the shelf portion while extending parallel thereto, and a hold-down piece which is disposed at a position facing the inner flap at the closed position in the shelf portion and which has a first bent portion bendable to protrude outward in a middle portion of the hold-down piece, the hold-down piece formed by cutting and raising the shelf portion to be capable of standing in a tilted state where a distal end side thereof extends toward a first side portion.

Abstract: A packaging box includes a shelf portion which partitions an interior of the packaging box into an upper space and a lower space, an inner flap which is located above the shelf portion as an inner lid and which is bendable to a closed position where the inner flap faces the shelf portion while extending parallel thereto, and a hold-down piece which is disposed at a position facing the inner flap at the closed position in the shelf portion and which has a first bent portion bendable to protrude outward in a middle portion of the hold-down piece, the hold-down piece formed by cutting and raising the shelf portion to be capable of standing in a tilted state where a distal end side thereof extends toward a first side portion.

Abstract: A linear motion device includes a guide shaft. A to-be-moved member is supported on the guide shaft, and is linearly movable along the guide shaft. A lead screw extends parallel to the guide shaft. A clamper meshes with the lead screw. The clamper moves as the lead screw rotates. An intermediate member is provided between the to-be-moved member and the clamper. An urging member operates for urging the to-be-moved member toward the clamper and enabling the intermediate member to be seated between the to-be-moved member and the clamper in a manner such that an axis of the intermediate member is nonparallel to the guide shaft.

Abstract: A linear motion device includes a guide shaft. A to-be-moved member is supported on the guide shaft, and is linearly movable along the guide shaft. A lead screw extends parallel to the guide shaft. A clamper meshes with the lead screw. The clamper moves as the lead screw rotates. An intermediate member is provided between the to-be-moved member and the clamper. An urging member operates for urging the to-be-moved member toward the clamper and enabling the intermediate member to be seated between the to-be-moved member and the clamper in a manner such that an axis of the intermediate member is nonparallel to the guide shaft.