Patent attributes
In a casing unit for accommodating a printed circuit board, a case has a plurality of walls, one of the walls being partially or entirely open to form an open surface through which the board is inserted into the case. Guides, secured on side walls, comprise two guide protruding members each formed to protrude from the side walls and positioned to partly contact both sides of the board to be inserted into the case, whereby the board is positioned in a planar direction thereof. A cover, applied to the case to cover the open surface of the case, comprises a vertically positioning member positioning the board in a vertical direction, when the cover is applied to the case to cover the open surface, by pinching an end of the board in the vertical direction. The end of the board is located in the open surface of the case.