US 11,656,246 B2
Contact probe and probe unit
Kohei Hironaka, Kanagawa (JP); and Kazuya Soma, Kanagawa (JP)
Assigned to NHK Spring Co., LTD., Yokohama (JP)
Filed by NHK Spring Co., Ltd., Yokohama (JP)
Filed on Jun. 24, 2022, as Appl. No. 17/848,603.
Application 17/848,603 is a continuation of application No. 16/633,597, granted, now 11,422,156, previously published as PCT/JP2018/028136, filed on Jul. 26, 2018.
Claims priority of application No. JP2017-146975 (JP), filed on Jul. 28, 2017.
Prior Publication US 2022/0317155 A1, Oct. 6, 2022
Int. Cl. G01R 1/073 (2006.01); G01R 1/04 (2006.01); G01R 1/067 (2006.01)
CPC G01R 1/073 (2013.01) [G01R 1/0466 (2013.01); G01R 1/06722 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A probe unit comprising:
a signal probe configured to receive and output a signal from and to a predetermined circuit structure;
a power supply probe configured to supply power to the predetermined circuit structure;
a grounding probe configured to supply a ground potential to the predetermined circuit structure; and
a conductive probe holder including a plurality of hole portions in which the signal probe, the power supply probe, and the grounding probe are insertable, the plurality of hole portions having a same hole shape as one another, wherein
the signal probe, the power supply probe, and the grounding probe inserted into the plurality of hole portions are interchangeable with one another to change an arrangement of the signal probe, the power supply probe, and the grounding probe,
wherein
each of the signal probe, the power supply probe, and the grounding probe includes:
a cylindrical pipe member;
a collar including a hollow portion and fixed to an inner circumferential side of at least one end in a longitudinal direction of the pipe member; and
an inner conductor including a flange configured to abut on a stepped portion formed by the pipe member and the collar, the inner conductor being expandable and contractible along the longitudinal direction and penetrating the pipe member,
the pipe members of the probes have a same outer diameter, and
stepped portions are formed by a small diameter portion and a large diameter portion of each of the plurality of the hole portions abut both ends of the pipe member in an axial direction to house each of the signal probe, the power supply probe, and the grounding probe in the conductive probe holder.