A handle for a freezer provided with a freezer main unit that has an opening at a front surface thereof and a door that is rotatably connected to the freezer main unit at one end side in a horizontal direction and seals the opening in an openable and closable manner by rotating around an axis in the vertical direction, comprising: a main unit base adapted to be fixed to a side surface of the freezer main unit on the side where the freezer main unit and the door are not connected and that has an engaging pin extending in the horizontal direction; a door base adapted to be fixed to a side surface of the door on the side where the freezer main unit and the door are not connected and that has a rotating shaft extending in the horizontal direction; a knob portion that is displaceable, by rotating around the rotating shaft, between a door-locking position where the opening and closing of the door is restricted and a door-unlocking position where the opening and closing of the door is allowed; and a rotation stopper that determines the door-unlocking position of the knob portion, wherein the knob portion has an engaging groove in which the engaging pin moves due to the rotation of the knob portion, the engaging groove has an open end that faces in a horizontal direction, normal to the directions and, when the knob portion is located at the door-unlocking position and through which the engaging pin is retracted or enters due to the opening or closing of the door, the engaging groove and the engaging pin become engaged with each other restricting the opening and closing of the door when the knob portion is displaced from the door-unlocking position to the door-locking position, and the engagement of the engaging groove and the engaging pin is released allowing for the opening and closing of the door when the knob portion is displaced from the door-locking position to the door-unlocking position, wherein, when the knob portion is located at the door-unlocking position, the rotation stopper positions the knob portion such that the engaging pin is located inside an extension range of the open end in the vertical direction, and wherein the engaging groove has a pushing surface that pushes, when the knob portion is displaced from the door-locking position to the door-unlocking position, the engaging pin such that the horizontal direction distance between the engaging pin and the rotating shaft obtained when the knob portion is located at the door-unlocking position becomes larger than the horizontal direction distance between the engaging pin and the rotating shaft obtained when the knob portion is located at the door-locking position, a portion of the pushing surface is located inside the extension range of the open end in the vertical direction when the knob portion is located at the door-unlocking position, and the engaging pin leaves the open end and enters the engaging groove to abut the pushing surface due to the closing of the door. a main unit base adapted to be fixed to a side surface of the freezer main unit on the side where the freezer main unit and the door are not connected and that has an engaging pin extending in the horizontal direction; a door base adapted to be fixed to a side surface of the door on the side where the freezer main unit and the door are not connected and that has a rotating shaft extending in the horizontal direction; a knob portion that is displaceable, by rotating around the rotating shaft, between a door-locking position where the opening and closing of the door is restricted and a door-unlocking position where the opening and closing of the door is allowed; and a rotation stopper that determines the door-unlocking position of the knob portion, wherein the knob portion has an engaging groove in which the engaging pin moves due to the rotation of the knob portion, the engaging groove has an open end that faces in a horizontal direction, normal to the directions and, when the knob portion is located at the door-unlocking position and through which the engaging pin is retracted or enters due to the opening or closing of the door, the engaging groove and the engaging pin become engaged with each other restricting the opening and closing of the door when the knob portion is displaced from the door-unlocking position to the door-locking position, and the engagement of the engaging groove and the engaging pin is released allowing for the opening and closing of the door when the knob portion is displaced from the door-locking position to the door-unlocking position, wherein, when the knob portion is located at the door-unlocking position, the rotation stopper positions the knob portion such that the engaging pin is located inside an extension range of the open end in the vertical direction, and wherein the engaging groove has a pushing surface that pushes, when the knob portion is displaced from the door-locking position to the door-unlocking position, the engaging pin such that the horizontal direction distance between the engaging pin and the rotating shaft obtained when the knob portion is located at the door-unlocking position becomes larger than the horizontal direction distance between the engaging pin and the rotating shaft obtained when the knob portion is located at the door-locking position, a portion of the pushing surface is located inside the extension range of the open end in the vertical direction when the knob portion is located at the door-unlocking position, and the engaging pin leaves the open end and enters the engaging groove to abut the pushing surface due to the closing of the door.