Abstract: An electronic device unit includes a printed board housing body, a printed board, and a front face panel to which the printed board is fixed. The front face panel is provided with hooks each having a tip provided with a recessed part and knobs for disengaging the hooks. The printed board housing body includes engagement parts each provided with a protruding part to fit with the recessed part of each hook. Pinching the knobs for removing the front face panel from the printed board housing body causes the hooks turn in directions such that engagement between the hooks and the engagement parts and fitting between the recessed parts and the protruding parts are released.

Abstract: A housing for a module in which a printed circuit board is housed and a housing for a base unit in which a printed circuit board is housed are each provided with an opening for a connector, and a convex portion and/or a concave portion is provided around the connector opening so that a cutting fluid is prevented from dripping and spreading on the connector that electrically connects units such as the module and the base unit.

Abstract: An electronic device unit includes a printed board housing body, a printed board, and a front face panel to which the printed board is fixed. The front face panel is provided with hooks each having a tip provided with a recessed part and knobs for disengaging the hooks. The printed board housing body includes engagement parts each provided with a protruding part to fit with the recessed part of each hook. Pinching the knobs for removing the front face panel from the printed board housing body causes the hooks turn in directions such that engagement between the hooks and the engagement parts and fitting between the recessed parts and the protruding parts are released.

Abstract: A housing for a module in which a printed circuit board is housed and a housing for a base unit in which a printed circuit board is housed are each provided with an opening for a connector, and a convex portion and/or a concave portion is provided around the connector opening so that a cutting fluid is prevented from dripping and spreading on the connector that electrically connects units such as the module and the base unit.

Abstract: A drip-proof structure of an electronic apparatus in which a printed circuit board is fixed to a stud provided on a housing includes a concave portion and/or a convex portion that is provided around the stud on the housing. Therefore, when a liquid, such as a cutting fluid, flows on the housing, the flow of the liquid from the stud to the printed circuit board is prevented by the concave portion and/or the convex portion.

Abstract: A metal mold device for casting that is adapted to prevent a casting sleeve from falling and that keeps even spacing between an inner circumferential wall of the casting sleeve and an outer circumferential wall of a bore pin. Ball plungers are provided at regular intervals in a circumferential direction on an outer circumferential portion of the bore pin in the vicinity of a distal end of the bore pin and on an outer circumferential portion in the vicinity of a basal end thereof, respectively, with respect to the axial direction of the bore pin. Three distal ball plungers are provided on the outer circumferential portion in the vicinity of the distal end of the bore pin and three basal ball plungers are provided on the outer circumferential portion in the vicinity of the basal end thereof. The distal ball plungers are 60° out of phase with the basal ball plungers when viewed in the axial direction.