Patent ID: 8525539

Claim:
An electrical connecting apparatus electrically connecting devices under test to an external apparatus, comprising: a chip unit having a chip supporting body and a plurality of electronic components arranged on the upper side of said chip supporting body; a probe unit spaced downward from said chip unit and having a probe supporting body and a plurality of contacts arranged on the lower side of said probe supporting body; a connecting unit arranged between said chip unit and said probe unit and having a connecting member supporting body and a plurality of connecting members supported to said connecting member supporting body so as to electrically connect said chip unit to said probe unit; a first seal member arranged between said chip unit and said connecting unit to close a first space between said chip unit and said connecting unit from outside; a second seal member arranged between said probe unit and said connecting unit to close a second space between said probe unit and said connecting unit from outside; first and second suction connecting portions respectively connecting said first and second spaces to a suction unit; wherein each said connecting member includes a connecting pin passing through said connecting member supporting body in the up-down direction; wherein said chip supporting body has a chip board on the user side of which said electronic components are arranged and a first ring having a first opening in which said chip board is arranged; wherein said probe supporting body has a probe board on the lower side of which said contacts are arranged and a second ring having a second opening in which said probe board is arranged; wherein said connecting member supporting body has a plate-shaped pin holder in which said connecting pins are arranged in a stare of passing therethrough in the up-down direction and a third ring having a third opening in which said pin holder is arranged; and wherein said first seal member is arranged between said first and third rings, and said second seal member is arranged between said second and third rings.