Electronic device and a casing used therefor

Abstract

In an electronic device in which a component connecting portion is mounted inside a case, a protective cover is mounted to the case to be rotatable and covers the component connecting portion. The protective cover has elastically deformable hooks facing a direction parallel to a rotation center line thereof. On the other hand, the case has hook receivers engageable with an disengageable from the hooks. The protective cover may be removable from the case or may be loosely connected thereto.

What is claimed is: 
     
         1 . A cover comprising:
 a first flat portion having a first principal surface and a side surface;   a first hook projecting from a first end portion of the first flat portion in a surface direction of the first principal surface; and   a first engagement portion projecting from a free end of the first hook in the surface direction that is different from a projecting direction of the first hook; and   a lib projecting from an end portion, opposite to the first flat portion, of the second flat portion in a surface direction of the second principal surface.   
     
     
         2 . The cover according to  claim 1 , further comprising:
 a second hook projecting from the first end portion in the surface direction; and   a second engagement portion projecting from a free end of the second hook in the surface direction that is different from the projecting direction of the second hook.   
     
     
         3 . The cover according to  claim 2 , wherein the first and the second engagement portions are directed to reverse mutually. 
     
     
         4 . The cover according to  claim 1 , further comprising an additional hook at an end portion of the second flat portion. 
     
     
         5 . A casing comprising:
 the cover according to  claim 1 ; and   a case provided with the cover.   
     
     
         6 . The casing according to  claim 5 , wherein the cover is put on the case so that a flat surface including the projection directions of the first hook and the first engagement portion faces an upper wall or a side wall of the case, the lib is engaged with the case, and the case has a hook receiver for engaging the first engagement portion. 
     
     
         7 . The casing according to  claim 6 , wherein the cover is rotatable around a rotation center line which is produced by engaging the lib with the case, and the first hook is provided at its end portion which is apart from the rotation center line. 
     
     
         8 . The casing according to  claim 6 , wherein the case has a recess adapted to fit the first hook, and the hook receiver is formed on an end portion of the recess. 
     
     
         9 . The casing according to  claim 5 , wherein the case comprises:
 An additional hook at an end portion of the second flat portion; and   An additional hook receiver adapted to be engaged with the additional hook.   
     
     
         10 . The casing according to  claim 9 , wherein the flange has a cutout portion for receiving the additional hook receiver. 
     
     
         11 . The casing according to  claim 5 , wherein the case has an open portion, and the cover is placed over the open portion. 
     
     
         12 . The casing according to  claim 11 , wherein the case has a flange provided to at least a portion of a periphery of the open portion, the cover is placed on the flange. 
     
     
         13 . The casing according to  claim 5 , wherein the case and the cover are connected to each other through a flexible material.