Detection fixture with power supply protection device

Abstract

The invention is a detection fixture with a power supply protection device, comprising a carrier plate, at least one elastic component, a first thimble set, a conductive sheet, a second thimble set and a power source; the carrier board can be subjected to an external force Moving downward, when the carrier board moves down to the feeding point of the product to be tested on the carrier board to contact the first thimble group, the distance that the carrier board descends is such that the conductive sheet on the carrier board contacts the second thimble group downward, thus The power source, the first thimble set, the product to be tested, the second thimble set and the conductive sheet form a loop to supply power to the product to be tested; when the pressure plate is lifted upward, the elastic component pushes up against the carrier to make the conductive sheet and the second thimble The groups are separated to form an open circuit; thus, during the process of lifting the plate, evenif the first thimble set or the product to be tested is accidentally touched, there is no electric shock.

Description

technical field [0001] The invention relates to a thimble jig for conducting electrical tests on electronic products such as circuit boards, in particular to a testing jig with a power supply protection device. Background technique [0002] In the prior art, electronic products to be tested (such as circuit boards) are often tested through a thimble jig, and the thimble jig usually includes devices such as a carrier board, a spring, a pressure plate, a thimble, and a power supply. [0003] When using the aforementioned jig, first place the electronic product to be tested on the top surface of the carrier board, and align the power supply point on the bottom of the product to be tested with the thimble; then push the product to be tested and the carrier board down through the pressure plate until the bottom of the product to be tested The power supply point of the thimble contacts the top of the thimble, and the power supply supplies power to the product under test through th...

AI Technical Summary

Problems solved by technology

[0005] However, the power supply continues to supply power to the thimble after the test is over, so the operator may accidentally touch the thimble or the product under test when the operator lifts the pressure plate, and there is a risk of electric shock; especially the thimble may carry high voltage (possibly up to 220V), so the risk of electric shock should not be underestimated

Therefore, the thimble fixture of the prior art cannot effectively reduce the possibility of electric shock, so it really needs to be improved.

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