| US 7,483,254 B1 | ||
| Control circuit of a bistable permanent magnet operating mechanism | ||
| Guangshun Wang, Suite 3111, Gaoxin Building, YuQing East Street, WeiFang City, Shandong Province 261061 (China) | ||
| Filed on Mar. 19, 2008, as Appl. No. 12/77,481. | ||
| Claims priority of application No. 2007 1 0154528 (CN), filed on Sep. 24, 2007. | ||
| Int. Cl. H01H 9/00 (2006.01); H01H 47/00 (2006.01); F16K 31/08 (2006.01) | ||
| U.S. Cl. 361—189 [251/65] | 3 Claims |
| 1. A control circuit of a bistable permanent magnet operating mechanism, including a permanent magnet operating mechanism
and a pulse signal control circuit connected to a pulse coil of the permanent magnet operating mechanism, the permanent magnet
operating mechanism having a housing (1), with an output shaft (2) positioned therein, the output shaft (2) extending out through an end cover (15) on an end of the housing (1), with an front end connecting to a performing mechanism, the output shaft (2) having a core (3) secured thereto, the core (3) having a permanent magnet (4) arranged outside of the core (3), the permanent magnet (4) and the housing (1) being securely connected, with a first pulse coil (L1) and a second pulse coil (L2) respectively positioned on an end of the permanent magnet (4), characterized in:
the pulse signal control circuit comprising a switch-off energy storage circuit (FZ), a switch-on energy storage circuit (HZ),
a switch-off contact switch, and a switch-on contact switch, the switch-off contact switch and the switch-on contact switch
being triple synchro contact switches,
wherein two terminals of a first set switch-off contacts (FZJ1) of the switch-off contact switch being connected to a negative terminal of the switch-off energy storage circuit (FZ) and
an upper end of the first pulse coil (L1) respectively, and, the upper end of the first pulse coil (L1) being connected to an upper end of the second pulse coil (L2) through a second unilateral diode (D2);
wherein two terminals of a third set switch-off contacts (FZJ3) of the switch-off contact switch being connected to a positive terminal of the switch-off energy storage circuit (FZ) and
an lower end of the second pulse coil (L2) respectively, and, the lower end of the second pulse coil (L2) being connected to an lower end of the first pulse coil (L1) through a first unilateral diode (D1);
wherein two terminals of a first set switch-on contacts (HZJ1) of the switch-on contact switch being connected to the upper end of the first pulse coil (L1) and a positive terminal of the switch-on energy storage circuit (HZ) respectively;
wherein two terminals of a second set switch-on contacts (HZJ2) of the switch-on contact switch being connected to the lower end of the first pulse coil (L1) and the upper end of the second pulse coil (L2) respectively; and
wherein two terminals of a third set switch-on contacts (HZJ3) of the switch-on contact switch being connected to the lower end of the second pulse coil (L2) and a negative terminal of the switch-on energy storage circuit (HZ) respectively.
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