| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce the number of part items, facilitate assembling and expand the upper limit size of a printed board by providing a plurality of inner lugs for holding board modules in the fitting attitude on a base case, and arranging the connector of each board module on a printed board so as to be directly connected to the connector of another board module in the fitting attitude. SOLUTION: A communication board module 28 is dropped in a board inserting opening section 33, then the communication board module 28 is thrust into the board inserting opening section 33 so that the low-speed junction inter- board connecting connectors 48, 51 of two board modules are directly connected together. The communication board module 28 can be mounted on an upper slit 42 and a mounting stud 41 in a board module storage section 32. A fixing screw 179 is inserted into a fixing hole and fixed to the mounting stud 41, and two board modules 28,,29 can be fixedly stored in a low-speed junction base case.</p> |
