Patent ID: 10420238

Abstract:
A housing kit (90) includes a housing body (20) and a ventilation member (10). The housing body (20) has a vent hole (21). The ventilation member (10) has a leg portion (26). The leg portion (26) is a portion adapted to be inserted into the vent hole (21). The housing body (20) has an inner peripheral surface (23) that defines the vent hole (21). The inner peripheral surface (23) includes a first rounded segment (23R1), a first straight segment (23S1), a second rounded segment (23R2), and a second straight segment (23S2) that are formed in order from an exterior space (24) side to an interior space (22) side of the housing body (20). The first rounded segment (23R1) and the second rounded segment (23R2) each form a curve convex toward a central axis (O) of the vent hole (21) in a cross section of the housing body (20) including the central axis (O). The first straight segment (23S1) and the second straight segment (23S2) each form a straight line in this cross section.