Permanent magnet executor
A technology of permanent magnet operation and permanent magnet, which is applied to the protection switch operation/release mechanism and the power device inside the switch, etc., which can solve the problems of low overall reliability, complex structure, and many moving parts, and achieve maintenance-free operation , good matching performance and less operation effort
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Embodiment 1
[0021] see figure 1 , figure 1 It is the first structure schematic diagram of the present invention.
[0022] According to the technical solution of the present invention, the permanent magnet mechanism includes: a transmission rod 7, an armature 12 is arranged on the transmission rod, and an opening coil 4, a permanent magnet 9, a pole shoe 10, and a closing coil are respectively arranged around the armature 12. 2 and the static iron core 3, the upper and lower ends of the transmission rod 7 pass through the upper and lower bushings 11, 6, the upper and lower bushings are respectively inlaid on the upper end cover 1 and the lower end cover 5, and an auxiliary gasket 8 is installed on the lower end cover 5 , The upper end cover 1 is a pot-shaped structure, and the bevel angle in the pot is the same as the taper angle of the armature 12 .
Embodiment 2
[0024] figure 2 It is the second structure schematic diagram of the present invention. The difference between this embodiment and Embodiment 1 is that this embodiment adopts a square structure. In the square structure, the upper and lower end covers 1, 5 and their attached basin shapes, the static iron core 3 and the pole shoe 10 are made into a whole, and are collectively called the static iron core. Simultaneously, the auxiliary gasket 8 and the armature 12 are also made into corresponding square shapes. All the other are with embodiment 1.
Embodiment 3
[0026] image 3 It is the third structural diagram of the present invention. The difference between this embodiment and Embodiment 1 is that the opening coil 4 is removed around the armature 12, and the rest are the same as in Embodiment 1, only relying on the internal communication of the closing coil 2 to communicate with the The current in the opposite direction of the closing current to complete the opening operation. However, this structure will produce a certain demagnetization effect on the permanent magnet, and the purpose of Embodiment 1 can also be achieved under certain less demanding conditions.
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