IREST HEALTH SCIENCE AND TECHNOLOGY CO., LTD;DONG-HER WU
发明人:
Dong-Her Wu
申请号：
US16390038
公开号：
US20200069506A1
申请日:
2019.04.22
申请国别(地区):
US
年份:
2020
代理人:
摘要：
A sprocket transmission mechanism of a massage device contains: a driven box, a pair of hollow holders, and two bendable chains. The driven box is driven by two drive shafts of a motor beside the driven box. The pair of hollow holders are rotatably connected with the two drive shafts respectively and have two grooves, and the pair of hollow holders are connected inside two inner sides of a chair or a bed respectively. The two bendable chains are accommodated in the two grooves individually. The two drive shafts have four sprockets fitted on two sides thereof individually, and two driven sprockets are rotatably connected between the two sides of the two shafts respectively, such that the two bendable chains are inserted into the pair of hollow holders to mesh with and to drive the four sprockets and the two driven sprockets to rotate individually.
