Sofa with retractable and elevatable mechanism

Abstract

The present disclosure provides a sofa with a retractable-and-elevatable mechanism including a sofa component and a retractable-and-elevatable component; the sofa component includes an armrest box connected to both sides of a sofa seat, an upper of the armrest box is provided with an armrest board; the retractable-and-elevatable component is provided between a bottom of the armrest box and a lower surface of the armrest board, and the armrest board can be controlled to rotate to a front of the sofa seat and convert into a table board through the retractable-and-elevatable component. Due to a use of the retractable-and-elevatable component, which solves a problem that a sofa armrest is fixed and is inconvenient rotation and adjustment, thereby meeting people's learning or work needs on the sofa, and the retractable-and-elevatable component is hidden inside the armrest box without affecting an original aesthetics of the sofa.

What is claimed is: 
     
         1 . A sofa with a retractable-and-elevatable mechanism, comprising:
 a sofa component ( 1 ), wherein the sofa component ( 1 ) comprises an armrest box ( 11 ) connected to both sides of a sofa seat, and an upper of the armrest box ( 11 ) is provided with an armrest board ( 12 ); and   a retractable-and-elevatable component ( 2 ), wherein the retractable-and-elevatable component ( 2 ) is provided between a bottom of the armrest box ( 11 ) and a lower surface of the armrest board ( 12 ), and the armrest board ( 12 ) can be controlled to rotate to a front of the sofa seat and convert it into a table board through the retractable-and-elevatable component ( 2 ).   
     
     
         2 . The sofa with a retractable-and-elevatable mechanism according to  claim 1 , the retractable-and-elevatable component ( 2 ) comprises a base sleeve ( 21 ) installed at the bottom of the armrest box ( 11 ), wherein the base sleeve ( 21 ) is internally sleeved with a hollow external threaded shaft ( 22 ), and a rising pin ( 23 ) capable of matching a threaded track of the external threaded shaft ( 22 ) is further installed on an inner wall of the base sleeve ( 21 ), the external threaded shaft ( 22 ) can be lifted and lowered inside the base sleeve ( 21 ) through the rising pin ( 23 ), and an inner of the external threaded shaft ( 22 ) is tightly sleeved with a support cylinder ( 24 ), a top of the support cylinder ( 24 ) is fixedly connected with a bottom of the armrest board ( 12 ). 
     
     
         3 . The sofa with a retractable-and-elevatable mechanism according to  claim 2 , wherein an outer wall of the support cylinder ( 24 ) is further tightly sleeved with a base sleeve pin ( 25 ), and a bottom of the base sleeve pin ( 25 ) is provided with buckles ( 251 ) at equal intervals, and an upper inner wall of the base sleeve ( 21 ) is provided with buckle grooves ( 211 ) at equal intervals that match with the buckles ( 251 ). 
     
     
         4 . The sofa with a retractable-and-elevatable mechanism according to  claim 3 , wherein a top end of the base sleeve ( 21 ) is further provided with hole positions ( 212 ) at equal intervals that correspond to the buckle grooves ( 211 ) and used as a reference, and the base sleeve pin ( 25 ) does not cover the hole position ( 212 ). 
     
     
         5 . The sofa with a retractable-and-elevatable mechanism according to  claim 4 , wherein a screw A is installed in the hole position ( 212 ), and a screw hole A is provided at the bottom of the armrest box ( 11 ) that is suitable for the screw. 
     
     
         6 . The sofa with a retractable-and-elevatable mechanism according to  claim 2 , wherein a side wall of the support cylinder ( 24 ) is provided with arc-shaped slots ( 241 ) at equal intervals, the arc-shaped slot ( 241 ) is provided with a screw B, and screw holes B corresponding to screws B are provided at the bottom of the armrest board ( 12 ) at equal intervals. 
     
     
         7 . The sofa with a retractable-and-elevatable mechanism according to  claim 2 , wherein a bottom of an outer wall of the external threaded shaft ( 22 ) is further provided with a longitudinal groove ( 221 ) connected to an outer wall of the threaded track thereof, and the external threaded shaft ( 22 ) is compatible with the rising pin ( 23 ). 
     
     
         8 . The sofa with a retractable-and-elevatable mechanism according to  claim 1 , wherein the armrest board ( 12 ) is provided with a groove, and a rolled edge metal cup holder ( 3 ) is fixed inside the groove.