| 摘要 |
<p>PURPOSE: To increase the wiring density of a circuit while sharing the cover and the like in an electric joint box where the number of wiring boards is increased or decreased depending on the grade of an automobile. CONSTITUTION: A base wiring board 3 and a dedicated wiring board 4 are stacked between upper and lower cases 2 and 7. Any one of the upper and lower cases is provided with a protrusion 6 for supporting the base wiring board 3 at the outer circumferential part thereof and a space 5 for receiving the dedicated wiring board is formed on the inside of the supporting protrusion. The supporting protrusion 6 is formed annularly at the outer circumference of one case 7.</p> |
