Waveguide structure, antenna device using the waveguide structure, and vehicle radar device using a waveguide structure or an antenna device

摘要

A waveguide structure (1A-1P) comprising: a base (2A-2C) having a mounting surface (4a-4c); a metal plate member (15A-15J) having an elasticity stacked on the attachment surface (4a-4c) and cooperating with the base (2A-2C) to construct a waveguide (7a); a positioning mechanism (21A-21M) constructed by: a positioning member (10a-10d, 40, 50a, 50b) arranged to be of a member of the group consisting of the base (2A-2C) and the Plate member (15A-15J) protrudes; and an intermediate fitting portion (25A-25F, 26A-26G) formed on the other member of the group consisting of the base (2A-2C) and the plate member (15A-15J) and connected to the positioning member (10a-10d, 40 , 50a, 50b), wherein the positioning mechanism (21A-21M) positions the plate member (15A-15J) on the attachment surface (4a-4c) of the base (2A-2C) and further moves along the attachment surface (4a-4c ) by mating the positioning member (10a-10d) and the intermediate fitting portion (25A-25F, 26A-26G); and holding means (11A, 11B, 56) holding the plate member (15A-15J) in a state of firmly contacting the attachment surface (4a-4c) by pressing the plate member (15A-15J) so that a reaction force is generated in the plate member (15A-15J). 15A-15J) is generated.