Patent ID: 7843198

Claim:
An electrical connecting apparatus for connecting a tester and an electric connection terminal of a device under test to undergo an electrical inspection by the tester, comprising: a support member having a mounting reference surface; a wiring board having a wiring circuit to be connected to the tester, being disposed with one surface opposed to the reference surface of the support member and having a plurality of through holes penetrating in the thickness direction; a flat plate-like probe board having on one surface a plurality of probes capable of bringing their tip portions into contact with the connection terminal of the device under test and a plurality of threaded holes formed in correspondence to the through holes of the wiring board on the other surface, and the other surface is disposed to oppose the other surface of the wiring board; an electric connector disposed between the probe board and the wiring board for electrically connecting the probes to a portion of the wiring circuit; screw members whose front ends penetrate at least the through holes of the wiring board respectively so as to connect the probe board with the support member; and a plurality of cylindrical spacers disposed to penetrate at least the wiring board between the other surface of the probe board and the reference surface of the support member, the spacers being disposed to penetrate at least the wiring board and being penetrated by the respective screw members; wherein at least one end face of the spacer, the support member to receive the end face or the contact surface of the probe board is a spherical curved surface.