Abstract: An electronic device includes a fixing object member, a case including a fixing target portion that includes a wall portion having a dovetail-shaped engaging target portion and to which the fixing object member is fixed, and a closing member including a dovetail-shaped engagement portion configured to be brought into engagement with the dovetail-shaped engaging target portion and in which an inner circumferential surface thereof is brought into abutment with an outer circumferential surface of the fixing object member and an outer circumferential surface thereof is brought into abutment with an inner circumferential surface of the wall portion.

Abstract: An electronic device includes a fixing object member, a case including a fixing target portion that includes a wall portion having a dovetail-shaped engaging target portion and to which the fixing object member is fixed, and a closing member including a dovetail-shaped engagement portion configured to be brought into engagement with the dovetail-shaped engaging target portion and in which an inner circumferential surface thereof is brought into abutment with an outer circumferential surface of the fixing object member and an outer circumferential surface thereof is brought into abutment with an inner circumferential surface of the wall portion.

Abstract: An electronic device according to embodiments of the invention include a fixing target member, a fixing portion having formed thereon a frame portion that is erected around a circumference of the fixing target member, a packing having a groove and disposed between the frame portion and the fixing target member, a core member disposed in the groove, and a pressing member that presses the core member towards the packing.

Abstract: A dust-proof case includes a case main body having a lid member resting surface that is formed on an outer circumferential portion and a wall portion that is formed on an outer circumferential side of the lid member resting surface, and a lid member having a lid member main body having a plurality of corner portions and an elastic portion that is in abutment with an inner surface of the wall portion that is formed on an outer circumference of the lid member main body and rested on the lid member resting surface, and the elastic portion includes the plurality of corner portions and a straight-line portion in a circumferential shape thereof, and a circumferential cross-sectional area of the elastic portion is narrower at the corner portion than at the straight-line portion.

Abstract: A sealing unit has a case including an opening portion having an attachment surface, a seal member including an annular flat plate portion and an annular rib portion provided to rise from one flat plate surface of the annular flat plate portion and made of an elastic material, an attachment member including an annular attachment surface, a fixing member, and a fastening member, and an outer circumferential surface of the annular rib portion is brought into abutment with the attachment surface of the opening portion, an inner circumferential surface of the annular rib portion is brought into abutment with the attachment surface of the attachment member, the fixing member comes into abutment with the other flat plate surface of the seal member and is fixed to the attachment member, and the fastening member comes into abutment with the other flat surface and is fixed to the case.

Abstract: A dust-proof case includes a case main body having a lid member resting surface that is formed on an outer circumferential portion and a wall portion that is formed on an outer circumferential side of the lid member resting surface, and a lid member having a lid member main body having a plurality of corner portions and an elastic portion that is in abutment with an inner surface of the wall portion that is formed on an outer circumference of the lid member main body and rested on the lid member resting surface, and the elastic portion includes the plurality of corner portions and a straight-line portion in a circumferential shape thereof, and a circumferential cross-sectional area of the elastic portion is narrower at the corner portion than at the straight-line portion.

Abstract: An electronic device according to embodiments of the invention include a fixing target member, a fixing portion having formed thereon a frame portion that is erected around a circumference of the fixing target member, a packing having a groove and disposed between the frame portion and the fixing target member, a core member disposed in the groove, and a pressing member that presses the core member towards the packing.

Abstract: A sealing unit has a case including an opening portion having an attachment surface, a seal member including an annular flat plate portion and an annular rib portion provided to rise from one flat plate surface of the annular flat plate portion and made of an elastic material, an attachment member including an annular attachment surface, a fixing member, and a fastening member, and an outer circumferential surface of the annular rib portion is brought into abutment with the attachment surface of the opening portion, an inner circumferential surface of the annular rib portion is brought into abutment with the attachment surface of the attachment member, the fixing member comes into abutment with the other flat plate surface of the seal member and is fixed to the attachment member, and the fastening member comes into abutment with the other flat surface and is fixed to the case.