PROBLEM TO BE SOLVED: To provide a fire power force adjustment device which does not cause defects as in a conventional fire power force adjustment device, in which a fire power force adjustment knob is rotatably held to an ignition/extinction button which moves a front/rear direction, so that a clearance has to be provided between the ignition/extinction button and the fire power force adjustment knob, and since the ignition/extinction button itself should be also moved, it is not firmly fixed, so that the fire power force adjustment knob is to be rotated in a rattling state and a sense of luxury of a gas appliance having the fire power force adjustment device assembled therein is spoiled.;SOLUTION: A fire power force adjustment device comprises: an operation member held movably in a cross direction; and a rotary member rotating together with the operation member, in which the operation member is rotated along a planar guide plate part provided orthogonally to a rotary axis of the operation member, so that the precession of the rotary member during rotation is at least restricted.;COPYRIGHT: (C)2015,JPO&INPIT
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