Patent ID: 9306427
Filing Date: 2016-04-05
CPC Classification: H02K

Claim Text:
1. An assembly structure, comprising: a) an end cover, the end cover comprising a rabbet, a cylindrical side wall having a plurality of clamping grooves, and an end plate having a plurality of through holes; and b) a cylindrical shell, the cylindrical shell comprising an end part, and the end part comprising a plurality of notch grooves and a plurality of clamping strips; wherein: the cylindrical side wall extends perpendicularly from the end plate; the end plate protrudes radially outwards from the cylindrical side wall, wherein the rabbet is formed between the end plate and the cylindrical side wall; the clamping grooves are arranged circumferentially around a bottom of the rabbet and on the cylindrical side wall; the through holes are arranged circumferentially on the end plate, and each of the through holes is connected to one of the clamping grooves; the notch grooves are arranged circumferentially at the end part, wherein one of the clamping strips is formed at the end part and next to each of the notch grooves; the cylindrical side wall is inserted inside the cylindrical shell; the end plate abuts the end part; the end part is disposed in the rabbet; each of the clamping strips is a singular continuous strip; each of the clamping strips is embedded in one of the clamping grooves through a riveting deformation, wherein the cylindrical shell and the end cover are connected together; and a plurality of grooves are arranged on the side wall, each of the grooves is connected to one of the clamping grooves, and each of the grooves extends from a middle portion of one of the clamping grooves and away from the end plate.