Electric housing device having an adjustable span

Abstract

The invention relates to an electric housing device having an adjustable span, comprising a main body portion, a winding cord, and a first moving part and a second moving part close to the two ends of the main body portion. The main body portion is provided with a driving device, and the bottom of the main body portion is provided with two parallel slide rails which slide along the length direction of the main body portion. The two slide rails extend towards the first moving part and the second moving part respectively and are fixed to the bottoms of the corresponding moving parts. The main body portion and the first moving part, and the main body portion and the second moving part are respectively provided with through grooves corresponding to the two slide rails, each through groove is located on the outside of the corresponding slide rail, each slide rail is slidably provided with a central running pulley, and the top of each central running pulley extends out from the corresponding through groove. The winding cord revolves around the driving device, the main body portion, the first moving part and the second moving part for one circle and winds around the driving device for several circles. The tops of the central running pulleys are fixed to the winding cord. The device is adjustable in terms of span, widely applicable and light in weight.

1 . An electric housing device having an adjustable span, comprising a main body portion, a winding cord, and a first moving part and a second moving part close to the two ends of the main body portion, wherein: the main body portion is provided with a driving device, and the bottom of the main body portion is provided with two parallel slide rails which slide along the length direction of the main body portion; the two slide rails extend towards the first moving part and the second moving part respectively and are fixed to the bottoms of the corresponding moving parts; the main body portion and the first moving part, and the main body portion and the second moving part are respectively provided with through grooves corresponding to the two slide rails, and each through groove is located on the outside of the corresponding slide rail; each slide rail is slidably provided with a central running pulley, the top of each central running pulley extends out from the corresponding through groove, and when the central running pulleys slide on the slide rails, the tops of the central running pulleys move along the through grooves; the winding cord revolves around the driving device, the main body portion, the first moving part and the second moving part for one circle and winds around the driving device for several circles; and the tops of the central running pulleys are fixed to the winding cord. 
     
     
         2 . The electric housing device having an adjustable span according to  claim 1 , wherein: the main body portion is provided with a first positioning piece and a second positioning piece that are diagonally arranged and located on the two sides of the driving device respectively; the first moving part and the second moving part are respectively provided with a third positioning piece and a fourth positioning piece corresponding to the second positioning piece and the first positioning piece; the third positioning piece and the fourth positioning piece are close to the outer end of the first moving part and the outer end of the second moving part respectively; and the winding cord revolves around the driving device, the second positioning piece, the third positioning piece, the first positioning piece and the fourth positioning piece for one circle. 
     
     
         3 . The electric housing device having an adjustable span according to  claim 2 , wherein: pulley structures are provided at the locations where the main body portion is close to the first moving part and the second moving part respectively, and the winding cord revolves around the driving device, the second positioning piece, the third positioning piece, the pulley structure of the main body portion and the first moving part, the first positioning piece, the fourth positioning piece, and the pulley structure of the main body portion and the second moving part for one circle, and winds around the two pulley structures for one and a half circles respectively. 
     
     
         4 . The electric housing device having an adjustable span according to  claim 3 , wherein: each pulley structure comprises a frame rack, a movable pulley and a fixed pulley; the frame rack comprises a sliding frame and a fixed frame connected to the sliding frame; the sliding frame is slidably connected to the sliding groove of the main body portion, and the fixed pulley is fixed inside one end of the sliding frame; the fixed frame is fixed to the corresponding moving part, and the movable pulley is arranged inside an end of the fixed frame in a movable manner and may slide along the direction of the fixed pulley; and the winding cord winds around the movable pulley and the fixed pulley for one and a half circles. 
     
     
         5 . The electric housing device having an adjustable span according to  claim 4 , wherein: a support structure corresponding to the sliding frame is provided inside the sliding groove for supporting the sliding frame. 
     
     
         6 . The electric housing device having an adjustable span according to  claim 5 , wherein: the support structure comprises two support components for respectively supporting the two frame walls of the sliding frame. 
     
     
         7 . The electric housing device having an adjustable span according to  claim 5 , wherein: a suspension plate is extended from the support structure towards the fixed frame and received in the fixed frame. 
     
     
         8 . The electric housing device having an adjustable span according to  claim 2 , wherein: the through groove of the main body portion and the first moving part is between the second positioning piece and the third positioning piece and its two ends are close to the second positioning piece and the third positioning piece respectively; and the through groove of the main body portion and the second moving part is between the first positioning piece and the fourth positioning piece and its two ends are close to the first positioning piece and the fourth positioning piece respectively 
     
     
         9 . The electric housing device having an adjustable span according to  claim 8 , wherein: a number of positioning frameworks are provided on the through groove of the main body portion and the first moving part, and the through groove of the main body portion and the second moving part respectively, and the winding cord passes through the positioning frameworks; and when the central running pulley slides on the slide rail, the top of the central running pulley can move inside a number of the corresponding positioning frameworks. 
     
     
         10 . The electric housing device having an adjustable span according to  claim 9 , wherein: the positioning frameworks are in a U shape. 
     
     
         11 . The electric housing device having an adjustable span according to  claim 10 , wherein: the winding cord revolves around the driving device, the second positioning piece, a number of positioning frameworks of the main body portion and the first moving part, the third positioning piece, the pulley structure of the main body portion and the first moving part, the first positioning piece, a number of positioning frameworks of the main body portion and the second moving part, the fourth positioning piece, and the pulley structure of the main body portion and the second moving part for one circle. 
     
     
         12 . The electric housing device having an adjustable span according to  claim 1 , wherein: the driving device comprises a gearbox, a motor connected to the gearbox and a roller connected to the motor; the winding cord winds around the roller for a number of circles; and the gearbox is used to control the rotating direction of the motor, the motor is used to control the rotating direction of the roller, and the roller is used to drive the winding cord to move. 
     
     
         13 . The electric housing device having an adjustable span according to  claim 12 , wherein: the gearbox comprises a circuit board, the circuit board comprises a microprocessor and a motion control sensor connected to the microprocessor, and the motion control sensor is connected to a remote controller. 
     
     
         14 . The electric housing device having an adjustable span according to  claim 4 , wherein: the main body portion comprises a middle part and side parts formed at the two ends of the middle part, the driving device is mounted in the middle position of the middle part, the first moving part and the second moving part are respectively close to the outer ends of the corresponding side parts; the first positioning piece and the second positioning piece are provided at the two opposite angles of the middle part. 
     
     
         15 . The electric housing device having an adjustable span according to  claim 14 , wherein: the corresponding sliding grooves are arranged on the two side parts respectively. 
     
     
         16 . The electric housing device having an adjustable span according to  claim 3 , wherein: the pulley structure of the main body portion and the first moving part, and the pulley structure of the main body portion and the second moving part are respectively arranged on the inner sides of the corresponding slide rails.