Spark testing screwdriver with replaceable tool bits
A screwdriver and cutter head technology, used in screwdrivers, indicating the existence of current/voltage, wrench, etc., can solve the problems of cutter head separation, difficulty in taking out, and cutter head easily falling into the interior of the equipment, etc. The effect of increased life and good elastic clamping force
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[0021] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.
[0022] Such as figure 1 As shown, the present invention is an electric measuring screwdriver with a replaceable head, which includes a handle, a cylindrical fixed cavity is provided in the middle of the handle, and an annular fixed cavity is provided at one end of the fixed cavity. Supporting protrusions, a connecting sleeve, a supporting sleeve and a compression sleeve are sequentially arranged in the fixed cavity, wherein one end of the connecting sleeve is in contact with the supporting protrusion; the supporting sleeve is made of insulating material, and the compression sleeve It is fixedly connected with the inner wall of the fixed cavity by threads; a t...
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