| 摘要 |
A cover-side projection (32) of a cover (3) and a connector-side projection (52a) of a connector (5) are respectively joined with casing-side grooves (23, 24) of a casing (2), and the cover-side projection (32)is joined with a connector-side groove (52b). Then, the gaps between each of the grooves and projections are filled with a sealing material. A first groove (300) which the cover-side projection (32) is joined with comprises the connector-side groove (52b) and the casing-side groove (23). The gap between the casing (2) inner wall portion (23b) and the connector (5) inner wall portion (52b2) and the gap between the casing (2) outer wall portion (23a) and the connector (5) outer wall portion (52b1) are located at different positions in the extending direction of the first groove (300). This configuration both eliminates portions that are joined solely by sealing material and achieves a compact size. |
