Lift mechanism and air supply device with lift mechanism

Abstract

A lift mechanism and air supply device with lift mechanism, the lift mechanism includes a cylinder, a threaded rod rotationally arranged in the cylinder, a power source for driving the threaded rod to rotate and a threaded holder in threaded connection with the threaded rod, the threaded holder is configured to install the air supply mechanism, a space is formed between the support bracket and the threaded holder, one end of the threaded rod extends between the support bracket and the threaded holder, and a guiding element for preventing the threaded holder from rotating is arranged between the cylinder and the threaded holder.

What is claimed is: 
     
         1 . A lift mechanism, comprising a cylinder, a threaded rod rotationally arranged in the cylinder, a power source for driving the threaded rod to rotate, and a threaded holder in threaded connection with the threaded rod, wherein an air supply mechanism is connected to the threaded holder, and a guiding element for preventing the threaded holder from rotating is arranged between the cylinder and the threaded holder. 
     
     
         2 . The lift mechanism according to  claim 1 , wherein an inner wall of the cylinder is provided with an installation plate, an end of the threaded rod is assembled with a stationary base, the stationary base is rotationally connected to the installation plate, the power source is installed at a side of the installation plate departing from the threaded rod, and the power source is connected to the stationary base, such that the power source drives the stationary base and the threaded rod to rotate. 
     
     
         3 . The lift mechanism according to  claim 2 , wherein the installation plate is provided with an extension stand, the extension stand extends in a direction to the threaded rod, an installation cavity is defined at a side of the extension stand departing from the threaded rod, the power source is installed in the installation cavity, and the stationary base is rotationally connected to the extension stand. 
     
     
         4 . The lift mechanism according to  claim 3 , wherein an end of the stationary base departing from the threaded rod is provided with a ring flange, an external diameter of the ring flange is greater than an external diameter of the stationary base, a circular groove for rotation of the ring flange is defined in the extension stand, the extension stand is further connected with a reinforcing member, and the reinforcing member is configured to prevent the stationary base from detaching from the circular groove. 
     
     
         5 . The lift mechanism according to  claim 4 , wherein the reinforcing member comprises a pressing plate on the extension stand, the pressing plate is covered on the circular groove, a side of the pressing plate departing from the extension stand is provided with a collar, and the stationary base is rotationally connected to the collar. 
     
     
         6 . The lift mechanism according to  claim 5 , wherein the power source is provided with a rotation shaft, a side wall of the rotation shaft is provided with an abutting face, a slot is defined in the stationary base, the slot is adapted to the rotation shaft, and the rotation shaft is inserted in the slot, such that the stationary base is driven to rotate by rotation of the rotation shaft. 
     
     
         7 . The lift mechanism according to  claim 6 , wherein a bottom end of the cylinder is rotationally connected to a housing, a driving member is installed in the housing, and the driving member is configured to drive the cylinder to rotate back and forth above the housing. 
     
     
         8 . The lift mechanism according to  claim 7 , wherein the housing is provided with an extension pillar, the bottom end of the cylinder is connected with a cover, the cover is rotationally connected to the extension pillar, and the driving member is connected to the cover. 
     
     
         9 . An air supply device, comprising a base, an outer shell which is hollow inside, the air supply mechanism and the lift mechanism according to  claim 1 , wherein the air supply mechanism is located in a housing, the air supply mechanism is installed on a support bracket, and the cylinder is arranged on the base.