| 摘要 |
A voltage detecting probe includes a first shield with an insertion concave formed at a front end; a second shield that has a base end of the first shield inserted thereinto; and a detection electrode formed of a conductive cylindrical member, covered with an insulating covering, and housed inside the first shield. The first shield or detection electrode moves along an axis when an operation lever is moved. When the insulating covering on the front end contacts a measured wire inserted into the insertion concave, the detection electrode and wire become capacitively coupled. The operation lever includes a pillar portion inserted through a guide hole in the second shield and connected to the first shield or detection electrode. A third shield, which is attached to the pillar portion, moves with the operation lever, and shields the guide hole, is disposed inside and/or outside the second shield. |
| 主权项 |
1. A voltage detecting probe comprising:
a first shield that is barrel-shaped, is electrically conductive and has an insertion concave, into which a measured wire is inserted, formed in a front end thereof by cutting away a part of an outer circumferential wall at the front end along a direction perpendicular to an axis; a second shield that is barrel-shaped, is electrically conductive, and has a base end side of the first shield inserted thereinto; and a detection electrode that is formed of a cylindrical member that is electrically conductive, whose front end surface and outer circumferential surface are covered with an insulating covering, and is housed inside the first shield, wherein one of the first shield and the detection electrode is constructed so as to be capable of moving along a direction of the axis in keeping with a movement operation of an operation lever, and when the insulating covering on the front end surface contacts the measured wire inserted into the insertion concave, the measured wire is clamped by the insertion concave and the front end surface and the detection electrode is capable of capacitive coupling with the measured wire via the insulating covering, the operation lever includes a knob portion and a pillar portion that is inserted through a guide hole formed in the second shield and is connected to the one of the first shield and the detection electrode, and a third shield, which is attached to the pillar portion, is configured so as to be capable of moving in keeping with a movement operation of the operation lever, and shields the guide hole when the measured wire is clamped, is disposed at least one of inside and outside the second shield. |
