To suppress an increase in the size of a connection structure of mechanical and electrical connection, while securing a waterproof function.
The connection structure comprises a first member 10 having a housing chamber 15, and a second member 20 which can be attached to the first member 10 so as to cover the housing chamber 15. The first member 10 has a first engaging part 11 and a first terminal 12. The second member 20 has a second engaged part 21 which is engaged with the first engaging part 11 and a second terminal 22 which is electrically connected to the first terminal 12. The first member 10 and the second member 20 form a waterproof area including the housing chamber 15 when the second member 20 is attached to the first member 10. The second engaged part 21 and the second terminal 22 are aligned along a boundary of the waterproof area.
Ishibashi Masayuki
Masaaki Ogata
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