Skate Having A Size Adjustable Function

Abstract

A skate includes a lower base, an upper base adjustably mounted on the lower base, and a control knob mounted on the lower base and detachably locked onto the upper base. The upper base has a slide provided with a plurality of locking teeth. The control knob is movably mounted in the lower base and has a first end provided with a support and a second end provided with a press button protruding from the lower base. The support of the control knob has a locking groove detachably locked on one of the locking teeth of the upper base.

1 . A skate, comprising:
 a lower base;   an upper base adjustably mounted on the lower base;   a control knob mounted on the lower base and detachably locked onto the upper base to releasably lock the upper base onto the lower base; wherein:   the lower base has a top provided with a slideway and a receiving channel connected to the slideway;   the upper base has a bottom provided with a slide slidably mounted in the slideway of the lower base;   the slide of the upper base has a side provided with a plurality of locking teeth spaced from each other;   the control knob is movably mounted in the receiving channel of the lower base;   the control knob has a first end provided with an upright support disposed in the receiving channel of the lower base and facing the locking teeth of the upper base and a second end provided with a press button protruding outwardly from the receiving channel of the lower base;   the support of the control knob has a first side provided with a locking groove detachably locked on one of the locking teeth of the upper base.   
     
     
         2 . The skate of  claim 1 , wherein the slide of the upper base is integrally formed with the locking teeth. 
     
     
         3 . The skate of  claim 1 , wherein the support of the control knob is integrally formed with the locking groove. 
     
     
         4 . The skate of  claim 1 , wherein each of the locking teeth of the upper base protrudes outwardly from the slide of the upper base. 
     
     
         5 . The skate of  claim 1 , wherein each of the locking teeth of the upper base has a distal end provided with an arcuate guide portion. 
     
     
         6 . The skate of  claim 1 , wherein each of the locking teeth of the upper base has an elongate shape. 
     
     
         7 . The skate of  claim 1 , wherein each of the locking teeth of the upper base has a length equal to a width of the slide of the upper base. 
     
     
         8 . The skate of  claim 1 , wherein each of the locking teeth of the upper base is disposed at an upright state. 
     
     
         9 . The skate of  claim 1 , wherein the slide of the upper base is an elongate plate. 
     
     
         10 . The skate of  claim 1 , wherein the locking teeth of the upper base are movable in the slideway of the lower base. 
     
     
         11 . The skate of  claim 1 , further comprising:
 an elastic member mounted in the receiving channel of the lower base and biased between the lower base and a second side of the support of the control knob to push the locking groove of the control knob toward one of the locking teeth of the upper base.   
     
     
         12 . The skate of  claim 1 , wherein the locking groove of the control knob is disposed at an upright state. 
     
     
         13 . The skate of  claim 1 , wherein the locking groove of the control knob has an elongate shape. 
     
     
         14 . The skate of  claim 1 , wherein the locking groove of the control knob has a substantially U-shaped cross-sectional profile. 
     
     
         15 . The skate of  claim 14 , wherein the locking groove of the control knob has an opening directed toward the locking teeth of the upper base. 
     
     
         16 . The skate of  claim 14 , wherein
 the locking groove of the control knob has two opposite sidewalls;   one of the locking teeth of the upper base is supported between the two opposite sidewalls of the locking groove.   
     
     
         17 . The skate of  claim 1 , wherein the receiving channel of the lower base is perpendicular to the slideway of the lower base.