Connecting structure for electric cleaning device handle and head assembly

A connecting structure for connecting a head assembly and a handle portion of a vibrating electric cleaning appliance, the vibrating electric cleaning appliance including a handle portion (1) and a head assembly (2) detachably mounted on the handle portion (1);

• the handle portion (1) including a handle housing (11) with a hollow portion, a vibration motor (19), and a vibration shaft (3);
• the head assembly (2) being assembled on the handle portion (1) along an axial direction of the vibration shaft (3), the head assembly (2) including a cleaning element (21) and a brush handle housing (22);
• the brush handle housing (22) having a central axis (L1);
• a handle interface (111) being provided on the top of a front end of the handle housing (11);
• the handle interface (111) and the vibration shaft (3) being accommodated in the hollow portion of the rear end of the brush handle housing (22),
• wherein a blind hole (114) of the handle interface is provided in the middle of the handle interface (111);
• the rear end portion of the vibration shaft (3) is tightly inserted into the blind hole (114) of the handle interface;
• a buckle cavity (113) of the handle interface is provided on the handle interface (111) in a length direction of the vibration shaft (3) along a direction perpendicular to the central axis (L2) of the vibration shaft (3);
• the front end surface of the buckle cavity (113) is a buckle locking surface (112) of the handle interface;
• a buckle combination part including a buckle cantilever (24) and a buckle protrusion (29) is provided in the brush handle housing (22) along its rear end;
• the buckle combination part extends along a direction from the head assembly (2) towards the handle portion (1) in the brush handle housing (22);
• the buckle cantilever (24) is formed in the brush handle housing (22) and is separated from the brush handle housing (22);
• the buckle cantilever (24) has a central axis (L3);
• the rear end of the buckle cantilever (24) is provided with the buckle protrusion (29);
• a locking surface (23) of the buckle combination part is provided on the buckle protrusion (29);
• the buckle protrusion (29) is accommodated by the buckle cavity (113).