Screen protecting assembly for electronic device

Abstract

A screen protecting assembly includes a pivot shaft, a curtain, two connecting bases and two rotating buttons. The curtain wraps around the pivot shaft. The connecting bases are connected to two opposite ends of the pivot shaft. Each rotating button has a first connecting portion and a second connecting portion. The first connecting portion engages the pivot shaft, and the second connecting portion is rotatably connected to the connecting base. When the rotating buttons are rotated in a first direction, the curtain unfolds to cover a screen of the electronic device. When the rotating buttons are rotated in a second direction counter the first direction, the curtain wraps around the pivot shaft again, so that the screen of the electronic device is exposed.

1 . A screen protecting assembly for an electronic device, comprising:
 a pivot shaft;   a curtain wrapped around the pivot shaft;   at least one connecting base connected to the pivot shaft; and   at least one rotating button, comprising a first connecting portion and a second connecting portion; the first connecting portion engaging the pivot shaft, and the second connecting portion rotatably connected to the connecting base;   wherein when the rotating button is rotated in a first direction, the pivot shaft is rotated in the first direction by the rotating button and the curtain unfolds to cover a screen of the electronic device; when the rotating button is rotated in a second direction opposite to the first direction, the pivot shaft is rotated in the second direction by the rotating button, and the curtain wraps around the pivot shaft, so that the screen of the electronic device is exposed.   
     
     
         2 . The screen protecting assembly of  claim 1 , wherein the first connecting portion is a protrusion and the pivot shaft defines a cutout engaging with the protrusion. 
     
     
         3 . The screen protecting assembly of  claim 2 , wherein the second connecting portion is a plurality of hooks; the connecting base defines a pivot hole; an annular positioning protrusion is formed in the inner surface of the connecting base; the annular hooks are hung on the positioning protrusion. 
     
     
         4 . The screen protecting assembly of  claim 1 , further comprising a sleeve sleeved on the pivot shaft, the sleeve defines an assembling groove, the curtain extends through the assembling groove. 
     
     
         5 . The screen protecting assembly of  claim 4 , wherein an assembling protrusion is formed on the sleeve; the electronic device defines a connecting groove to engage with the assembling protrusion. 
     
     
         6 . The screen protecting assembly of  claim 1 , further comprising two connecting bases connected to opposite ends of the pivot shaft. 
     
     
         7 . The screen protecting assembly of  claim 1 , wherein the at least one rotating button comprises a first surface and a second surface opposite thereto; the first connecting portion and the second connecting portion are formed on the first surface; and an operating portion is formed on the second surface. 
     
     
         8 . The screen protecting assembly of  claim 1 , wherein the curtain bears a photo or an image. 
     
     
         9 . A screen protecting assembly for an electronic device, comprising:
 a pivot shaft;   a curtain wrapped around the pivot shaft;   a connecting base connected to the pivot shaft; and   at least one torsion spring, the at least one torsion spring has an inner positioning portion and an outer positioning portion, wherein the inner positioning portion engages with the pivot shaft, and the outer positioning portion engages with the connecting base; when the pivot shaft is rotated in a first direction, the curtain unfolds to cover a screen of the electronic device, and the torsion spring is compressed; when the pivot shaft is rotated in a second direction opposite the first direction, the curtain automatically wraps around the pivot shaft driven by the torsion spring, to expose the screen of the electronic device.   
     
     
         10 . The screen protecting assembly of  claim 9 , wherein the pivot shaft defines a cutout; the inner positioning portion is engaged in the cutout. 
     
     
         11 . The screen protecting assembly of  claim 10 , wherein the connecting base defines a pivot hole and a restricting groove communicating with the pivot hole; the outer positioning portion is engaged in the restricting groove of the connecting base. 
     
     
         12 . The screen protecting assembly of  claim 11 , wherein the connecting base further defines an assembling groove communicating with the pivot hole; the pivot shaft is received in the pivot hole of the connecting base, with an end of the curtain extending through the assembling groove. 
     
     
         13 . The screen protecting assembly of  claim 9 , further comprising two covers engaging the pivot shaft on opposite ends; an operating portion is formed on each cover. 
     
     
         14 . The screen protecting assembly of  claim 9 , wherein the curtain bears art or an image. 
     
     
         15 . A screen protecting assembly for an electronic device, comprising:
 a pivot shaft rotatably connected to a first end of the electronic device;   a curtain wrapped around the pivot shaft; and   a first magnet and a second magnet, wherein a polarity of the first magnet is different from a polarity of the second magnet; the first magnet is connected to the curtain, and the second magnet is positioned at a second end of the electronic device opposite to the first end; when the pivot shaft is rotated, the curtain unfolds to cover a screen of the electronic device, until the first magnet is coupled with the second magnet to position the curtain.   
     
     
         16 . The screen protecting assembly of  claim 15 , further comprising a sleeve sleeved on the pivot shaft, the sleeve defines an assembling groove; the curtain extends through the assembling groove. 
     
     
         17 . The screen protecting assembly of  claim 16 , wherein an assembling protrusion is formed on the sleeve and the electronic device defines a connecting groove to engage with the assembling protrusion. 
     
     
         18 . The screen protecting assembly of  claim 15 , further comprising two connecting bases connected to opposite ends of the pivot shaft. 
     
     
         19 . The screen protecting assembly of  claim 15 , further comprising at least one rotating button engaging with the pivot shaft. 
     
     
         20 . The screen protecting assembly of  claim 15 , wherein the curtain bears a photo or an image.