发明名称 |
CLEANER FOR CARD CARRYING BELT IN CARD PUBLIC TELEPHONE SET |
摘要 |
PROBLEM TO BE SOLVED: To clean dirt of a card carrying belt without visit of a maintenance personnel to a location where a telephone set is installed by providing a polish belt and a solenoid to make the polish belt contact onto the card carrying belt. SOLUTION: When a counter 6 counts a telephone card detection signal outputted from a card sensor by a prescribed number of times, the counter 6 provides an output of a count-up signal. A motor solenoid drive circuit 7 receives this signal to output a drive signal to a solenoid 9 and a motor 10. The solenoid 9 is driven, a solenoid shaft 91 is descended, and a roller 12 is descended via a spring 14. A polish belt 8 is descended and in contact with a card carrier belt 3. The polish belt 8 is wound on a winding roller 11 by the drive of the motor 10 and moved little by little. When the solenoid 9 and the motor 10 are operated for a prescribed time, they are deenergized by a signal from the drive circuit 7. |
申请公布号 |
JPH09107423(A) |
申请公布日期 |
1997.04.22 |
申请号 |
JP19950287860 |
申请日期 |
1995.10.09 |
申请人 |
NIPPON TELEGR & TELEPH CORP <NTT> |
发明人 |
TOMOZOE TAKAHIRO;TANAKA HIDEO |
分类号 |
B24B21/00;H04M1/02;H04M17/00;(IPC1-7):H04M17/00 |
主分类号 |
B24B21/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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