Baby walker with infinite-adjustment function

Abstract

A baby walker with an infinite-adjustment function includes an upper plate and a lower plate. A backrest is provided on the upper plate, and a wheel set is provided on the lower plate. The upper plate is connected to the lower plate by a telescopic structure capable of adjusting a space between the upper plate and the lower plate. The telescopic structure comprises a fixed seat and a movable arm, the fixed seat being in telescopic connection to the movable arm. A rotary adjusting wheel is provided on the fixed seat, the adjusting wheel being placed vertically, an adjusting groove disposed along an involute being provided on one surface of the adjusting wheel; and the end of the movable arm, connected to the fixed seat, is provided with a positioning column having one end extended into the adjusting groove. An adjusting member is connected to the adjusting wheel.

What is claimed is: 
     
         1 . A baby walker with an infinite-adjustment function, including an upper plate and a lower plate, wherein a backrest is provided on the upper plate, and a wheel set is provided on the lower plate; and the upper plate is connected to the lower plate by a telescopic structure capable of adjusting a space between the upper plate and the lower plate;
 the telescopic structure comprises a fixed seat and a movable arm, the fixed seat is in telescopic connection to the movable arm;   a rotary adjusting wheel is provided on the fixed seat, the adjusting wheel is placed vertically, an adjusting groove disposed along an involute is provided on one surface of the adjusting wheel; and the end of the movable arm, connected to the fixed seat, is provided with a positioning column having one end extended into the adjusting groove; and   an adjusting member is connected to the adjusting wheel.   
     
     
         2 . The baby walker with an infinite-adjustment function according to  claim 1 , wherein the fixed seat is fixed on the lower plate and the movable arm is connected to the upper plate. 
     
     
         3 . The baby walker with an infinite-adjustment function according to  claim 2 , wherein the fixed seat is integrated with the lower plate. 
     
     
         4 . The baby walker with an infinite-adjustment function according to  claim 1 , wherein the fixed seat is fixed on the upper plate and the movable arm is fixed on the lower plate. 
     
     
         5 . The baby walker with an infinite-adjustment function according to  claim 2 , wherein an upper coil pipe is provided in the upper plate, a lower coil pipe is provided in the lower plate, and a support pipe is provided in the movable arm;
 the upper coil pipe is fixedly connected to the upper end of the support pipe, and the lower end of the support pipe is in telescopic connection to a bent portion of the lower plate.   
     
     
         6 . The baby walker with an infinite-adjustment function according to  claim 5 , wherein the movable arm comprises an outer support cover and an inner support cover, the inner support cover being sheathed with the support pipe and fixed on the outer support cover. 
     
     
         7 . The baby walker with an infinite-adjustment function according to  claim 1 , wherein the adjusting member is an adjusting knob, the adjusting wheel is connected to the adjusting knob through a rotating shaft which is mounted on the fixed seat, the adjusting wheel is located within the fixed seat, the adjusting knob is located outside the fixed seat. 
     
     
         8 . The baby walker with an infinite-adjustment function according to  claim 1 , wherein the upper end of the fixed seat is provided with an opening, the end of the movable arm connected to the fixed seat is fitted with the opening; and the end of the movable arm connected to the fixed seat is inserted into a chamber of the fixed seat through the opening, the chamber is fitted in size with the end of the movable arm connected to the fixed seat.