5results about How to "Prevent pulling out" patented technology

This utility model belongs to the field of medical device technology, and in particular to a disposable self-locking syringe, including a syringe barrel and a needle mounted on the surface of the syringe barrel. A rubber head is slidably connected to the inner surface of the syringe barrel, and a push rod is fixedly connected to the surface of the rubber head. A pressing plate is fixedly connected to the end of the push rod away from the rubber head. The syringe barrel also includes a connecting plate fixedly connected to one end, and a gripping part is fixedly connected to the surface of the connecting plate. Both the connecting plate and the gripping part are slidably connected to the rubber head. This device can not only lock the push rod in one direction, but also does not hinder the extraction of liquid medicine after the push rod is installed, making it convenient for medical personnel to use. When the push rod is pushed all the way down, it is locked so that it cannot be reused after use, thus fundamentally eliminating the need for reuse.

The utility model belongs to the technical field of optical fiber patch cord, and disclose the jumper tail fiber plug -pull structure of optical cable junction box, including optical cable adapter, the optical cable adapter is installed in the optical cable junction box, the one end of optical cable adapter is equipped with the mounting groove, the optical fiber connector is installed in the mounting groove, the optical fiber connector is equipped with the plug -pull assembly with mounting groove, the plug -pull assembly includes sleeve rod, the sleeve rod is connected with the optical fiber connector sliding sleeve, both ends of optical fiber connector are all fixedly connected with the joint block, two the joint block all is hollow, the inner surface of two joint block all is connected with the moving block slidingly, the utility model discloses through setting plug -pull assembly, in the sleeve rod sliding drive moving block movement, make the plug -in block can accurate and firmly card into the slot, realize the stable connection of optical fiber connector and optical cable adapter, effectively prevent the tail fiber loose and fall off, guarantee the stability of signal transmission.

The utility model discloses a kind of submersible pump cable anti-abrasion elastic fixing base, it is related to cable anti-abrasion technical field, including circular ring base, cable and pump body, the mounting hole is provided on the pump body, the lower end of the circular ring base is equipped with first hollow tube, the upper end of the circular ring base is equipped with second hollow tube, threaded groove is provided on the outer wall of the first hollow tube, the diameter of the first hollow tube is less than the diameter setting of mounting hole, first connecting cap is installed to the outside of the first hollow tube, the lower of the circular ring base is equipped with sealing element, the outside of the cable is equipped with cold shrink tube, one end of the cold shrink tube is sleeved in the outside of second hollow tube, the fixing base is made of certain elasticity plastic, cable connecting part is extended tightly wrapped by cold shrink tube, the support performance of cold shrink tube is used to reduce cable impact shake, reduce the abrasion damage of cable, protection effect is better, improve the service life of submersible pump.

The application relates to a preparation method of high-temperature-resistant and impact-resistant PVC insulating material and belongs to the technical field of composite materials; a polyurethane flame-retardant chain extender with a pyridine ring structure, a phosphate structure and two hydroxyl structures in the structure is prepared, the polyurethane is modified by using the polyurethane flame-retardant chain extender, a flame-retardant polyurethane segment with the phosphate structure and the pyridine ring structure in the structure is prepared, and finally the flame-retardant polyurethane segment is grafted on the surface of glass fiber to obtain modified glass fiber. The modified glass fiber of the application is close to random distribution in the PVC matrix, and shows isotropy, so that the impact from different directions can be effectively resisted. In addition, the modified glass fiber of the application can effectively improve the rigidity of PVC and inhibit the thermal slip of molecular chains at the interface, so that the high-temperature resistance of the composite material can also be effectively improved.