| 摘要 |
<p>PURPOSE:To prevent a photodetector from causing a malfunction by the disturbance light, by closing a current route by a connection to an optical coupling connector of the other side, so that an operation of the photodetector is allowed. CONSTITUTION:By inserting positioning studs 90a, 90b into guide holes 70a, 70b, pins 91a-91d for signal line of a connector 9 are inserted into holes 71a-71d for lead terminal of a connector 7 and an electrical connection is executed, a light emitting element 93 and a photodetector 94 are opposed to a photodetector 74 and a light emitting element 73, respectively, and the optical coupling can be executed. Also, when the pins 91a-91d are inserted through the holes 71a-71d, a cylindrical collar 760 is spread out to both outsides against a spring 761, the conical tip of the pins 91a-91d is accepted into a conical recessed part of lead terminals 77a, 77b, and both are connected electrically. In a state that the connectors 7, 9 are not connected, a current route of each photodetector 74, 94 is opened, and since the operation is not allowed, a malfunction and a wasteful current consumption can be prevented.</p> |
