Patent ID: 9702905
Date: 2017-07-11
CPC Classifications: G01R

Claim:
1. A probe unit comprising a plurality of probe groups each including two or more contact probes to be in contact with one electrode of a contact target body on a side of one end in a longitudinal direction, the respective contact probes being to be in contact with separate electrodes of a board on a side of another end, wherein the contact probe comprises: a first contact unit that is arranged on the side of one end in the longitudinal direction, that has a plurality of nail portions having a tapered end shape, and that is brought into physical contact with the electrode of the contact target body by at least two of the plurality of the nail portions positioned on a side near other contact probe contacting the same electrode; a second contact unit that is arranged on the side of another end in the longitudinal direction, and that is to be in contact with a corresponding electrode of the board; and a coil spring that is arranged between the first contact unit and the second contact unit, and that biases the first and the second contact units, wherein the first contact unit is brought into contact with the electrode of the contact target body by at least two of the plurality of the nail portions that are located where a clockwise or counterclockwise rotation angle from a position at which the plurality of contact probes come closest each other is less than 45 degrees.