Toothbrush

摘要

A toothbrush has a handle assembly, a brush-head assembly and a transmitting assembly. The brush-head assembly is slidably mounted in the handle assembly and has a sliding shaft and a swing head. The sliding shaft has two supporting portions mounted on the sliding shaft opposite to the handle assembly. The swing head is mounted on the supporting portions and has a toothed part. The transmitting assembly has a transmitting shaft. The transmitting shaft is rotatably inserted in the sliding shaft and has a longitudinal restriction relative to the sliding shaft. The transmitting shaft has a toothed portion engaging the toothed part. When the transmitting shaft is rotated, the swing head is driven to swing by the toothed part and the toothed portion to provide an improved cleaning effect.

主权项

1. A toothbrush comprising:
a handle assembly comprising a spiral structure mounted inside the handle assembly; a brush-head assembly slidably inserted into the handle assembly and comprising
a sliding shaft being elongated, slidably inserted into the handle assembly and comprising
a rear end inserted into the handle assembly;a front end opposite to the rear end;a top surface;a brush-head recess formed from the top surface and being adjacent to the front end of the sliding shaft;two supporting portions mounted in the brush-head recess and facing each other;two pin holes being elongated, formed respectively along parts of a periphery of the sliding shaft and formed through the sliding shaft, and the pin holes aligning with each other; andmultiple fixing bristles mounted on the sliding shaft, located at the front end of the sliding shaft and on two sides of the brush-head recess; anda swing head mounted on the supporting portions, mounted swingingly in the brush-head recess and comprising
a toothed part mounted on a bottom side of the swing head; andmultiple bristles mounted on a top side of the swing head; a transmitting assembly mounted in the handle assembly and the brush-head assembly and comprising
a transmitting shaft rotatably inserted into the sliding shaft and the handle assembly and comprising
a front end located in the brush-head recess;a rear end opposite to the front end and located in the handle assembly;a spiral structure mounted on the rear end of the transmitting shaft and matching the spiral structure of the handle assembly; anda toothed portion mounted on the front end of the transmitting shaft and engaging with the toothed part;a pin inserted through the transmitting shaft and the pin holes;a sliding block mounted around and engaging with the sliding shaft and located in the handle assembly; andtwo elastic elements mounted around the sliding shaft, located respectively on two sides of the sliding block and located in the handle assembly, wherein each elastic element abuts between the sliding block and the handle assembly.