| 主权项 |
1. A housing, comprising:
a first housing part that includes a first side wall; and a second housing part that includes a second side wall, wherein the first side wall includes a plurality of first protruding parts on an inner circumferential surface, wherein the second side wall includes an outer circumferential surface and a first housing part facing surface, wherein the second side wall further includes, on the outer circumferential surface, a plurality of first concave parts into which respective first protruding parts of the plurality of first protruding parts are fitted, wherein the first housing part further includes a third side wall interior to the first side wall, wherein the second side wall of the second housing part is configured to insert between the first side wall and the third side wall of the first housing part, wherein the second side wall includes, on an inner circumferential surface, a plurality of second concave parts, wherein the third side wall includes a plurality of second protruding parts on an outer circumferential surface, wherein respective second protruding parts of the plurality of second protruding parts are fitted into the plurality of second concave parts, and wherein the plurality of first concave parts and the plurality of second concave parts are alternatively arranged at least on a portion of the second side wall. |
