Patent ID: 7417868

Claim:
A casing unit for accommodating therein a printed circuit board having a planar direction extending therealong, a vertical direction perpendicular to the planar direction, and an upper surface and a lower surface extending along the planar direction, electronic component parts being mounted on at least one of the upper and lower surfaces, the casing unit comprising: a case having a plurality of walls including one wall which is partially or entirely open to form an opening through which the printed circuit board is inserted into the case and two side walls each intersecting the opening and being parallel with an insertion direction alone which the printed circuit board is inserted; a guide member composed of two guides respectively secured on the side walls inside the case, the two guides providing a path therealong to guide the printed circuit board to be inserted into the case along the insertion direction; a cover applied to the case so as to cover the opening of the case after inserting the printed circuit board into the case from the opening of the case alone the path; a first positioning member being provided on a part of each of the two guides, which is positioned farthest in the insertion direction, and positioning the printed circuit board inserted in the case in the planar direction by coming in contact with part of each, side of the printed circuit board; and a second positioning member being provided on the cover and positioning the printed circuit board in a the vertical direction by coming into contact with at least one of the upper surface and the lower surface of the printed circuit board in the vertical direction.