Cover opening and closing mechanism and electronic apparatus

Abstract

An opening and closing mechanism for a cover is openable and closable with respect to a body. The mechanism includes a link structure supported at the body rotatably within a range of a first predetermined angle from a closed state of the cover, and supporting the cover rotatably within a range of a second predetermined angle. The link structure is rotated integrally with the cover when being rotated within the range of the first predetermined range. The cover is solely rotated within the range of the second predetermined angle when the link structure has been rotated by the first predetermined angle from the closed state of the cover.

1 . An opening and closing mechanism for a cover openable and closable with respect to a body, the mechanism comprising: 
 a link structure supported at the body rotatably within a range of a first predetermined angle from a closed state of the cover, and supporting the cover rotatably within a range of a second predetermined angle, wherein    the link structure is rotated integrally with the cover when being rotated within the range of the, first predetermined range, and    the cover is solely rotated within the range of the second predetermined angle when the link structure has been rotated by the first predetermined angle from the closed state of the cover.    
   
   
       2 . An opening and closing mechanism for a cover openable and closable with respect to a body, the mechanism comprising: 
 a link having at one end a first hinge supported at the body side, and having at the other end a second hinge supported at the cover side, wherein    when the cover is open, the cover is integrally rotated with the link about the first hinge by a first predetermined angle, then the cover is solely rotated about the second hinge by a second predetermined angle, and the cover is maintained in an open state, and    when the cover is closed, the cover is solely rotated about the second hinge by the second predetermined angle, then the cover is integrally rotated with the link about the first hinge by the first predetermined angle, and the cover is maintained in a closed state.    
   
   
       3 . The opening and closing mechanism for the cover according to  claim 2 , wherein the link includes a biasing unit for biasing the cover in its opening direction by a moment substantially equivalent to a moment caused by a weight of the cover when the cover is rotated in the opening direction about the first hinge by the first predetermined angle.  
   
   
       4 . The opening and closing mechanism for the cover according to  claim 2 , wherein the link and the cover have rotation restrictors that restrict the rotation of the cover and the link when the cover and the link have been rotated by the first predetermined angle, and the rotation of the cover when the cover has been rotated by the second predetermined angle.  
   
   
       5 . The opening and closing mechanism for the cover according to  claim 2 , wherein the first and second hinges are disposed not to protrude from the body when the cover is in the closed state.  
   
   
       6 . An electronic apparatus comprising the opening and closing mechanism for the cover according to  claim 1 .  
   
   
       7 . The electronic apparatus according to  claim 6 , wherein the electronic apparatus is a recording device that performs a recording operation on a recording medium.