Patent ID: 8202235
Filing Date: 2012-06-19
Classification: A61H

Abstract:
1. A single-motor massager comprising a housing having a main guiding slot formed through a front surface of the housing; a carriage movably mounted in the housing; a lead threaded rod mounted through the carriage, being parallel to the main guiding slot of the housing and having two ends securely attached to the housing; a right-handed thread formed in and around the lead threaded rod; and a left-handed thread formed in and around the lead threaded rod and interlacing and communicating with the right-handed thread; a guiding assembly mounted in the carriage and having a holding base being tubular, securely mounted in the carriage and mounted around the lead threaded rod; a driven element having a first driven gear mounted around the lead threaded rod; a mounting tube formed on and protruding axially from a side surface of the driven gear of the driven element and rotatably mounted around the lead threaded rod and through the holding base; and a mounting hole formed through the mounting tube; and a guider securely mounted in the mounting hole of the driven element and alternatively engaging the right-handed thread and the left-handed thread of the lead threaded rod; a main transmission assembly mounted in the carriage and having a main shaft rotatably mounted in the carriage and having a distal end protruding through the carriage and in the main guiding slot of the housing; a one-way bearing securely mounted around the main shaft and having an outer casing; and a bushing securely attached to the main shaft; a second driven gear mounted around the main shaft and attached to the bushing of the one-way bearing; and a first driving gear mounted around the main shaft, attached to the outer casing of the one-way bearing and connected to and driving the first driven gear of the guiding assembly; a main massage assembly disposed on the front surface of the housing and connected to the distal end of the main shaft; and a driving assembly mounted in the carriage and having a motor securely mounted in the carriage and having a worm protruding from an end oft the motor and connected to and driving the second driven gear of the main transmission assembly.