2results about How to "Small coverage" patented technology

This utility model discloses a battery pack, comprising a first mounting plate, a second mounting plate, and a bend. Welding holes are provided on the first and second mounting plates. These welding holes are not through holes, and the diameter of the circular hole on the near end face is smaller than the diameter on the far end face. An inner cavity is provided inside the welding hole, and the inner wall of the welding hole has an inclination angle of 50° to 70°. A protective flange that mates with the welding hole is provided near the near end face of the welding hole, and the upper end face of the protective flange is slightly higher than the horizontal plane of the first and second mounting plates. Compared with the prior art, the beneficial effect of this utility model is that it provides a countersunk hole molten pool structure at the welding point on the battery pack. During battery assembly welding, this structure can block a certain amount of molten metal splashing, reduce the coverage area of ​​the splashed metal, and provide some containment for the molten metal, reducing the possibility of splashed metal getting stuck between the battery cells and puncturing the insulation.

The application discloses a support head cover special for intervention, and relates to the field of medical instruments, which comprises a base for supporting the head of a patient, a side plate vertically fixed on the base, a lifting plate slidingly arranged on the side plate towards the base or away from the base, and a cover plate rotatably arranged on the side of the lifting plate away from the base. The support head cover special for intervention can adapt to various conditions of non-transcervical puncture surgery and transcervical puncture surgery by lifting the lifting plate and rotating the cover plate, thereby improving the universality.