Electromagnet device and switch device using electromagnet device

An electromagnet device comprising:

• a fixed core;
• a movable core;
• a permanent magnet in which one surface of magnetic poles faces said movable core and the other surface of the magnetic poles is fixed to said fixed core;
• a shaft which is connected to said movable core;
• an electromagnetic coil which is located so as to wind around said shaft;
• and
• an open spring which comes into contact with a surface substantially perpendicular to said shaft of said movable core in a movable range of said movable core,
• wherein, in the case of being located at one of utmost positions of the movable range of said movable core, one of utmost positions being a position in which said movable core comes into contact with said fixed core,
• arrangement is made coaxially in the order of said movable core, said electromagnetic coil, said fixed core, and said open spring from said shaft toward the outside, and the whole or a part of each axial dimension of said movable core, said electromagnetic coil, said fixed core, and said open spring are overlapped with each other in the case of being seen in a radial direction of said shaft;
• one or a plurality of said open springs are provided on a peripheral portion of said fixed core centering on said shaft;
• and
• a bearing support member mounted on a support plate and equipped with a bearing of said shaft is located passing through a part of said fixed core and a part of said movable core.

An electromagnet comprising:

• a movable core;
• and
• a shaft which is connected to said movable core, said electromagnet including:
• a pair of first connection links which are connected to said shaft;
• a pair of driving levers which are arranged at symmetrical positions with respect to said shaft, one end thereof being connected to said first connection link and the other end thereof being connected to a support point of a support portion of said electromagnet by a pin so as to be capable of pivoting;
• open springs which are arranged at symmetrical positions with respect to a direction of said shaft connected to said movable core;
• and
• a pair of open spring supports, each of which coming into contact with one end of said open spring and being connected to said driving lever,
• said open spring support and said driving lever being connected by a second connection link by a pin.