3results about How to "Improve close contact" patented technology

The utility model provides a kind of electric plug structure of compressor, for and the pin of compressor are inserted, including electric plug body and three connecting columns;Three mounting through holes are opened on the electric plug body, three the mounting through hole is distributed along the circumferential direction, and the mounting through hole is along axial direction and penetrates the electric plug body;Three The connecting column is respectively installed in three the mounting through hole;The connecting column includes the connecting head and connecting rod part of being connected, the connecting head is used to be inserted with the wiring end of compressor, and the connecting rod part is used to be connected with outside;The cross section of the connecting head is scallop shape;The utility model can increase the contact area of the pin of compressor, reduce the phenomenon of sparking caused by bad contact, so that product quality is more stable, can also improve test efficiency simultaneously.

The utility model discloses a double faced adhesive tape rolling pasting module for PCB processing, which comprises an X-axis lead screw module, a Z-axis lead screw module and a mounting seat, a vertically arranged Z-axis sliding rail is fixedly arranged on the side wall of one end, deviating from the Z-axis lead screw module, of the mounting seat, a first telescopic air cylinder is further fixedly arranged on the mounting seat above the Z-axis sliding rail, and a second telescopic air cylinder is further fixedly arranged on the mounting seat above the Z-axis sliding rail. An output shaft of the first telescopic air cylinder is connected with a rolling and pasting roller used for rolling and pasting and pressing the double-faced adhesive tape through a U-shaped support, and one side of the U-shaped support is arranged on the Z-axis sliding rail in an embedded mode and can move in the laying direction of the Z-axis sliding rail. According to the technical scheme, the first telescopic air cylinder is arranged, the height of the rolling and pasting rolling wheel is adjusted through the first telescopic air cylinder, movement of the rolling and pasting rolling wheel is guided through the Z-axis sliding rail, and rolling and pasting treatment is conducted on the surface to be machined through the rolling and pasting rolling wheel; the surfaces of the two sides of the machined workpiece are evenly pressed in a full-area mode, and the adhesion stability of the double-faced adhesive tape is effectively improved.

This utility model provides a tabletop lift-type laboratory fume hood, relating to the field of laboratory fume hoods. It includes: a cabinet body; an exhaust duct on the upper side of the cabinet body, with an exhaust fan connected to the outer end of the exhaust duct; a filter assembly connected to the outer end of the exhaust fan; a filter box containing filter elements and a partition inside the filter box; a dust collection hood on the inner side of the cabinet body, with a flexible hose connected to its rear side; the lower end of the flexible hose connecting to a rear exhaust port on the rear side of the operating table; an electric actuator connected to the lower end of the operating table; a tabletop on the lower side of the operating table; and a storage box on the lower side of the tabletop. This utility model facilitates height adjustment of the operating table inside the cabinet and enables effective filtration and suction close to the operating table.