Board connection structure, electronic device with board connection structure and connector used therein

Abstract

In an electronic device, a board connection structure of the present invention is provided, that electrically connects conductive parts of multiple circuit boards arranged in layers. The board connection structure reduces the positional displacement of the two circuit boards without considering the positioning precision of connectors provided on each circuit board. The board connection structure of the present invention is a board connection structure 1 which connects electrically conductive parts ( 13, 23 ) of two circuit boards ( 11, 21 ) arranged in layers. The board connection structure has a pair of connectors ( 31, 41 ) which have electrical continuity with the conductive parts ( 13, 23 ) of the two circuit boards ( 11, 21 ) arranged facing each other, and a flexible wiring board 51 which is electrically connected with each of the pair of connectors ( 31, 41 ) and ensures electrical continuity between the connectors ( 31, 41 ). The connectors ( 31, 41 ) are of non-ZIF type and ensure electrical connection and physical anchoring by inserting the flexible wiring board 51 into insertion holes formed in the connectors.

What is claimed is:  
     
         1 . A board connection structure that electrically connects conductive parts of at least two circuit boards that are arranged in layers, comprising: 
 a pair of connectors configured so as to have electrical continuity with the conductive parts of said at least two circuit boards arranged facing each other; and    a flexible wiring board electrically connected with each of said pair of connectors and which ensures electrical continuity between said pair of connectors, wherein said connector is a connector which can, by inserting said flexible wiring board therethrough, ensure electrical connection and physical anchoring therebetween.    
     
     
         2 . A board connection structure according to  claim 1 , wherein each of said connectors includes: 
 a case of non-conductive material having an opening formed into which the flexible wiring board is inserted, and    a metal contact part that is provided inside said case to make contact with a conductive part formed on said flexible wiring board, said metal contact part having at least one claw that resists pulling-out force of said inserted flexible wiring board.    
     
     
         3 . A board connection structure according to  claim 1 , wherein said flexible wiring board is constituted by forming electrodes formed on a front surface and/or a back surface of a flexible base material.  
     
     
         4 . A board connection structure according to  claim 1 , wherein at least one of said pair of connectors is a through-type connector which said flexible wiring board pierces, and on a circuit board surface on which said through-type connector is provided, holes are formed into which said flexible wiring board can be inserted from a surface opposite a mounting surface of said through-type connector.  
     
     
         5 . An electronic device comprising a board connection structure that electrically connects conductive parts of at least two circuit boards arranged in layers wherein said board connection structure includes a pair of connectors configured to so as to have electrical continuity with the conductive parts of said at least two circuit boards arranged facing each other; and a flexible wiring board electrically connected with each of said pair of connectors and which ensures electrical continuity between said pair of connectors, said connector is a connector which can, by inserting said flexible wiring board therethrough, ensure electrical connection and physical anchoring therebetween.  
     
     
         6 . The electronic device according to  claim 5 , wherein each of said connectors includes: 
 a case of non-conductive material, in which an opening is formed into that the flexible wiring board is inserted, and    a metal contact part that is provided inside said case to make contact with a conductive part formed on said flexible wiring board, said metal contact part having at least one claw that resists a pulling-out force of said inserted flexible wiring board.    
     
     
         7 . A electronic device according to  claim 5 , wherein, said flexible wiring board is constituted by forming electrodes formed on one of a front surface and/or a back surface of a flexible base material.  
     
     
         8 . The electronic device according to  claim 5 , wherein at least one of said pair of connectors is a through-type connector which said flexible wiring board pierces when inserted, and on a circuit board surface on which said through-type connector is provided, holes are formed into which said flexible wiring board can be inserted from a surface opposite a mounting surface of said through-type connector.  
     
     
         9 . A connector in combination with a flexible wiring board, comprising: 
 an insertion opening into which said flexible wiring board is inserted, and    a pullout opening through which the flexible wiring board inserted through said insertion opening, is pulled out, wherein said flexible wiring board can pierce the connector.    
     
     
         10 . A connector with a flexible wiring board, comprising: 
 an insertion opening which receives therein the flexible wiring board, wherein a sloping surface is formed around said insertion opening to guide said flexible wiring board into said insertion opening.    
     
     
         11 . An electronic device comprising: 
 at least two circuit boards having rigidity;    a flexible wiring board; and    connectors mounted respectively on said at least two circuit boards and electrically and mechanically connecting said flexible wiring board with said circuit boards, wherein said at least two circuit boards are connected to each other electrically by said flexible wiring board, thus increasing the degree of freedom concerning relative positions of said circuit boards and improving packability thereof into a housing of the electronic device.    
     
     
         12 . A electronic device according to  claim 11 , wherein an insertion opening is formed in each of said connectors, said flexible wiring board being inserted into said insertion opening and 
 a sloping surface is formed around said insertion opening to guide insertion of said flexible wiring board into said connectors in assembling of the electronic device at the time of manufacture.    
     
     
         13 . An electronic device according to  claim 11 , wherein said connectors are of non-ZIF type and electrically and mechanically connect said circuit boards and said flexible wiring board to each other.  
     
     
         14 . An electronic device comprising; 
 multiple circuit boards having rigidity;    a flexible wiring board; and    connectors that electrically and mechanically connect said flexible wiring board with said circuit boards, said connectors being respectively mounted on said multiple circuit boards, wherein    holes are formed in said multiple circuit boards, which are aligned in position with said connectors for receiving said flexible wiring board therethrough, and    said multiple circuit boards are connected together electrically via said flexible wiring board.    
     
     
         15 . An electronic device comprising: 
 a flexible wiring board;    multiple through-type connectors that are connected electrically and mechanically with said flexible wiring board; and    multiple circuit boards each of which is mounted with one of said multiple through-type connectors and in which through-holes are formed aligned in position on said connectors, wherein    said multiple circuit boards are combined in layers with respect to said flexible wiring board using said through-holes.