| 摘要 |
An opening and closing device of a bus swing door is provided to bock the operation of a limit switch so as to close the swing door normally when a bus inclined more than a predetermined angle. An angle-association switch(1) blocks power supply for a limit switch when a bus is inclined more than a predetermined angle, and includes a housing(2) at a power supply side of the limit switch, first and second contact points(3,4) positioned in the housing and respective connected to a power supply line and a limit switch line, and a sensing bar(6) contacting the first and second contact points at both ends to supply power to the limit switch in response to the bus inclination within a predetermined inclination angle range while blocking the power by a weight(7) in response to the inclination beyond the range.
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