Folding mechanism and a sofa

Abstract

The present disclosure discloses a folding mechanism and a sofa. The folding mechanism connects a storage portion and a support portion and comprises a first link bar, a second link bar, a third link bar, and a fourth link bar. The first link bar and the third link bar are respectively pivotally connected to the support portion. The second link bar and the fourth link bar are respectively pivotally connected to the storage portion. The first link bar and the third link bar are pivotally connected, the second link bar and the fourth link bar are pivotally connected, and the second link bar and the third link bar are pivotally connected.

What is claimed is: 
     
         1 . A folding mechanism connecting a storage portion and a support portion, the folding mechanism comprising:
 a first link bar, a second link bar, a third link bar, and a fourth link bar, wherein:
 the first link bar and the third link bar are respectively pivotally connected to the support portion, 
 the second link bar and the fourth link bar are respectively pivotally connected to the storage portion, 
 the first link bar and the third link bar are pivotally connected, 
 the second link bar and the fourth link bar are pivotally connected, and 
 the second link bar and the third link bar are pivotally connected. 
   
     
     
         2 . The folding mechanism according to  claim 1 , wherein:
 a first end of the first link bar and a first end of the third link bar are respectively pivotally connected to the support portion,   a first end of the second link bar and a first end of the fourth link bar are respectively pivotally connected to the storage portion,   a second end of the first link bar and a second end of the third link bar are pivotally connected, and   a second end of the second link bar and a second end of the fourth link bar are pivotally connected.   
     
     
         3 . The folding mechanism according to  claim 1 , wherein the second link bar, the third link bar, the fourth link bar, and the storage portion cooperate to form a first four-bar linkage. 
     
     
         4 . The folding mechanism according to  claim 1 , wherein the first link bar, the second link bar, the third link bar, and the support portion cooperate to form a second four-bar linkage. 
     
     
         5 . The folding mechanism according to  claim 1 , wherein:
 the second link bar, the third link bar, the fourth link bar, and the storage portion cooperate to form a first four-bar linkage, and   the first link bar, the second link bar, the third link bar, and the support portion cooperate to form a second four-bar linkage.   
     
     
         6 . The folding mechanism according to  claim 1 , further comprising:
 a driving mechanism, wherein the driving mechanism is connected to the first link bar to drive the first link bar to rotate.   
     
     
         7 . The folding mechanism according to  claim 6 , wherein:
 the driving mechanism comprises a driving portion and an abutting portion slidably connected to the driving portion,   the driving portion is pivotally connected to the support portion, and   the abutting portion is pivotally connected to the first link bar.   
     
     
         8 . The folding mechanism according to  claim 7 , wherein:
 the driving mechanism comprises an electric push rod, and   a push rod of the electric push rod is the abutting portion.   
     
     
         9 . The folding mechanism according to  claim 6 , wherein:
 the storage portion comprises a sensor for determining whether an object is present on the storage portion, and   the sensor is communicatively connected to the driving mechanism.   
     
     
         10 . The folding mechanism according to  claim 9 , wherein:
 the storage portion comprises a storage surface and a protrusion base protruding from the storage surface,   the sensor is disposed on the protrusion base, and   the sensor is at least one of an infrared sensor, a microwave sensor, or a laser sensor configured to determine whether the object is present on the storage portion.   
     
     
         11 . The folding mechanism according to  claim 1 , wherein:
 the storage portion comprises a sensor for determining whether an object is present on the storage portion,   at least one of the storage portion or the support portion comprises an alarm unit, and   the sensor is communicatively connected to the alarm unit.   
     
     
         12 . The folding mechanism according to  claim 1 , wherein the storage portion comprises a storage panel. 
     
     
         13 . The folding mechanism according to  claim 1 , wherein:
 the storage portion comprises a storage panel and a fixed base fixed to a back surface of the storage panel, and   the second link bar and the fourth link bar are pivotally connected to the fixed base of the storage portion.   
     
     
         14 . The folding mechanism according to  claim 1 , wherein the storage portion comprises a wireless charging module. 
     
     
         15 . A folding mechanism connecting a storage portion and a support portion, the folding mechanism comprising:
 a first link bar, a second link bar, a third link bar, and a fourth link bar, wherein:
 the second link bar, the third link bar, the fourth link bar, and the storage portion cooperate to form a first four-bar linkage, and 
 the first link bar, the second link bar, the third link bar, and the support portion cooperate to form a second four-bar linkage. 
   
     
     
         16 . A sofa, comprising:
 a sofa body comprising a support portion, and   a folding mechanism, wherein:
 the folding mechanism connects a storage portion and the support portion, 
 the folding mechanism comprises a first link bar, a second link bar, a third link bar, and a fourth link bar, 
 the first link bar and the third link bar are respectively pivotally connected to the support portion, 
 the second link bar and the fourth link bar are respectively pivotally connected to the storage portion, 
 the first link bar and the third link bar are pivotally connected, 
 the second link bar and the fourth link bar are pivotally connected, and 
 the second link bar and the third link bar are pivotally connected. 
   
     
     
         17 . The sofa according to  claim 16 , wherein:
 the sofa body comprises a seat portion and two armrest portions respectively located at opposite sides of the seat portion, and   a first armrest portion of the two armrest portions is disposed with the support portion.   
     
     
         18 . The sofa according to  claim 17 , wherein:
 an outer wall of the first armrest portion is recessed to define an accommodating chamber,   the storage portion is movable between an unfolded state and a folded state by the folding mechanism, and   the storage portion and the folding mechanism are located in the accommodating chamber when the storage portion is in the folded state.   
     
     
         19 . The sofa according to  claim 17 , wherein:
 the folding mechanism further comprises a driving mechanism,   the driving mechanism is connected to the first link bar to drive the first link bar to rotate,   the first armrest portion comprises a control panel, and   the control panel is communicatively connected to the driving mechanism.