Universal battery pack connecting structure for electric tool

The utility model discloses a general battery pack connecting structure for an electric tool, which is characterized by comprising a standard assembly groove integrally formed with a shell. The standard pin is connected with electronic components in the shell; the adapter is inserted into the standard assembly groove in a matched manner, and battery slots with different sizes are formed in the adapter according to different battery packs; the power socket comprises an upper butt joint end and a lower butt joint end, the lower butt joint end is in butt joint with the standard pin, and the size of the upper butt joint end is set according to electric energy ports of different battery packs; the battery pack adapter has the advantages that an electric tool manufacturer can produce the adapter matched with the battery pack according to the battery pack provided by a customer, the problem that the battery pack is not matched can be solved through one adapter, the whole shell does not need to be subjected to mold o