Patent ID: 7924034

Claim:
An electrical connecting apparatus comprising: a wiring board having an upper surface side and a lower surface side; a probe assembly arranged on one surface side of said wiring board and having a probe substrate and a plurality of probes attached to a lower surface side of said probe substrate; a reinforcing plate having an upper surface side, a lower surface side, and an attachment portion and coupled with said wiring board at said attachment portion to be spaced from said wiring board in a thickness direction of said wiring board in a state where the lower surface side of said reinforcing plate is opposed to the upper surface side of said wiring board; a thermal deformation restriction member having an upper surface side and a lower surface side and coupled with the upper surface side of said reinforcing plate; and an auxiliary member having an upper surface side and a lower surface side and arranged between said wiring board and said reinforcing plate and coupled with said reinforcing plate, wherein a thermal expansion coefficient of said reinforcing plate is smaller than that of said thermal deformation restriction member and is larger than that of said auxiliary member, and said auxiliary member has a void inside a coupling region with said reinforcing plate, said void receiving a deformed part when a center portion of said wiring board is deformed toward said reinforcing plate.