Patent ID: 11045370

Abstract:
An elevation-type armrest includes a driving assembly and a cushioning assembly. The driving assembly includes a worm, a crank, an axle, a shaft, a worm gear, two toothed wheels and two pinions. The crank is connected to the worm. The axle extends perpendicular to the worm. The worm gear is connected to the axle and engaged with the worm. The first toothed wheel is connected to the axle. The shaft extends parallel to the axle. The second toothed wheel is connected to the shaft and engaged with the first toothed wheel. The pinions are connected to two ends of the shaft. The cushioning assembly includes a supporting tube connected to two racks. Each of the racks includes a toothed portion movably located in a corresponding one of the cylinders and engaged with a corresponding one of the pinions.