Abstract: A component fitting structure includes: a first component including an elastic column provided with an engaging piece; and a second component including a cutout capable of being engaged by the engaging piece, in which the engaging piece includes a first protrusion protruding laterally from the elastic column and a second protrusion protruding in a direction opposite to a protrusion direction of the first protrusion, and the cutout includes a first edge configured to oppose the first protrusion and a second edge configured to oppose a part of the second protrusion and open a remainder of the second protrusion, after the first component and the second component are assembled.

Abstract: A circuit board fall-out prevention structure includes: a housing; a circuit board fitted to the housing in an insertable and extractable manner; an insertion and extraction lever supported with a shaft rotatably with respect to the circuit board and capable of being hooked on the housing to facilitate an insertion and extraction operation of the circuit board; and a recess-protrusion capable of being hooked between the insertion and extraction lever and the circuit board after insertion of the circuit board in a direction different from an insertion and extraction direction of the circuit board.

Abstract: A hand-held device is a portable device configured to be attached to and detached from a metal board, and includes a casing and a magnet disposed inside the casing so as to be attracted to the metal board via an attachment face of the casing. The hand-held device further includes an urging element for urging the magnet so that the magnet moves in a direction away from the attachment face when the casing is detached from the metal board.

Abstract: A hand-held device is a portable device configured to be attached to and detached from a metal board, and includes a casing and a magnet disposed in the casing. The hand-held device further includes a moving unit disposed so as to surround the magnet when an attachment face of the casing that is attached to the metal board is viewed from the front, the moving unit being configured to move so as to extend in a direction in which a distal end portion of the moving unit moves away from the attachment face of the casing when the casing is detached from the metal board.

Abstract: A circuit board fall-out prevention structure includes: a housing; a circuit board fitted to the housing in an insertable and extractable manner; an insertion and extraction lever supported with a shaft rotatably with respect to the circuit board and capable of being hooked on the housing to facilitate an insertion and extraction operation of the circuit board; and a recess-protrusion capable of being hooked between the insertion and extraction lever and the circuit board after insertion of the circuit board in a direction different from an insertion and extraction direction of the circuit board.

Abstract: A component fitting structure includes: a first component including an elastic column provided with an engaging piece; and a second component including a cutout capable of being engaged by the engaging piece, in which the engaging piece includes a first protrusion protruding laterally from the elastic column and a second protrusion protruding in a direction opposite to a protrusion direction of the first protrusion, and the cutout includes a first edge configured to oppose the first protrusion and a second edge configured to oppose a part of the second protrusion and open a remainder of the second protrusion, after the first component and the second component are assembled.

Abstract: A mounting section on which a nameplate is mounted includes a space formed between the nameplate and a bottom part of the mounting section, the space enabling the nameplate to be rotated about a fulcrum E that serves as a center of rotation, in a state with the nameplate being mounted on a casing.

Abstract: A hand-held device is a portable device configured to be attached to and detached from a metal board, and includes a casing and a magnet disposed in the casing. The hand-held device further includes a moving unit disposed so as to surround the magnet when an attachment face of the casing that is attached to the metal board is viewed from the front, the moving unit being configured to move so as to extend in a direction in which a distal end portion of the moving unit moves away from the attachment face of the casing when the casing is detached from the metal board.

Abstract: A hand-held device is a portable device configured to be attached to and detached from a metal board, and includes a casing and a magnet disposed inside the casing so as to be attracted to the metal board via an attachment face of the casing. The hand-held device further includes an urging element for urging the magnet so that the magnet moves in a direction away from the attachment face when the casing is detached from the metal board.

Abstract: A manual pulse generating device is equipped with a rotatable dial, a pulse generating unit configured to generate drive pulses for commanding axial movement in accordance with an amount of rotation of the dial, an enable switch configured to switch between enablement and disablement of axial movement in accordance with the drive pulses, and a casing having the dial and the enable switch disposed on a surface thereof, and configured to accommodate the pulse generating unit in the interior thereof. The guard configured to cover at least a portion of an outer circumferential surface of the dial is attached to the casing.

Abstract: A mounting section on which a nameplate is mounted includes a space formed between the nameplate and a bottom part of the mounting section, the space enabling the nameplate to be rotated about a fulcrum E that serves as a center of rotation, in a state with the nameplate being mounted on a casing.