SWIVEL CHAIR DEVICE HAVING ASCENDING AND DESCENDING FUNCTION

原文（中国語）

A swivel chair device having an ascending and descending function. The swivel chair device comprises a support pipe (), a shaft sleeve (), a spline pipe () and a telescopic cylinder (). The shaft sleeve () is fixedly arranged in the support pipe (). The spline pipe () is arranged in the support pipe (), the bottom end of the spline pipe () being higher than the bottom end of the support pipe (), and the top end of the spline pipe () being fixedly connected to the shaft sleeve () so as to be connected to the support pipe () to form a non-rotating body. A rotary reset mechanism, which elastically connects the telescopic cylinder () to the spline pipe () for driving the telescopic cylinder () that has been rotated at any angle to be automatically reset, is further arranged in the spline pipe ().