JPH0436085Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electromagnet, and more particularly to an electromagnet that utilizes a magnetic field generated by energizing a conducting wire.

[Conventional technology]

Conventionally, this type of electromagnet has a structure in which a conducting wire is wound around a cylindrical or horseshoe-shaped ferromagnetic material.

FIG. 3 is a perspective view of an example of a conventional electromagnet.

As shown in FIG. 3, a conductive wire 6 is wound around the outer periphery of a cylindrical metal ferromagnetic body 1a, and a direct current is supplied to the conductive wire 6 from a power source 7 to generate a magnetic field.
A magnetic metal object was adsorbed in b.

[The problem that the idea attempts to solve]

The conventional electromagnet described above has a structure in which a conductive wire is wound around a ferromagnetic material, so depending on the shape, size, and material of the ferromagnetic material around which the conductive wire is wound,
The strength of the generated magnetic field was different at positions a, b, and c at different distances from the conducting wire on the attraction surface. Therefore, when using this electromagnet to attract multiple thin plates to a suction surface without causing them to shift relative to each other, it is possible to avoid misalignment due to differences in the size, weight, and material of the objects to be attracted. The disadvantage is that it occurs.

[Means to solve the problem]

The electromagnet of the present invention has a columnar part and one of the opposing end faces of the columnar part as a first attracting surface in which a plurality of parallel grooves are formed at predetermined intervals on the upper surface that generates a unipolar magnetic field. a ferromagnetic material, and a second ferromagnetic material that generates a magnetic field of opposite polarity to the one polarity, the second ferromagnetic material being inserted into each of the parallel grooves separately from the first ferromagnetic material and having one end connected to the other surface of the columnar part. It is configured to include a ferromagnetic material and a conductive wire wound around the outer periphery of the columnar portion.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

1A and 1B are a partially cutaway plan view and a sectional view taken along the line A-A' of an embodiment of the present invention, respectively, and FIG. 2 is an exploded perspective view of the first and second ferromagnetic bodies shown in FIG. It is a diagram.

As shown in FIGS. 1 and 2, one of the opposing end surfaces of the columnar portion 2 is an adsorption surface with a plurality of parallel grooves 3 formed at predetermined intervals on the upper surface that generates a unipolar magnetic field. 4 and a first ferromagnetic material 1, which is inserted separately from the ferromagnetic material 1 into each of the parallel grooves 3, and one end of which is connected to the surface facing the attraction surface 4 of the columnar part 2, having one polarity and an opposite polarity. It includes a ferromagnetic material 5 having an attraction surface 4a that generates a magnetic field, and a conductive wire 6 wound around the outer periphery of the columnar part 2.

A conductive wire 6 wound around the outer circumference of the columnar part 2 of the ferromagnetic material 1
By energizing, a magnetic field is generated, and the ferromagnetic materials 1 and 5 are magnetized. Now, if magnetic lines of force are generated in the direction of the arrow shown by the broken line in FIG. arise. Therefore,
Magnetic fields with different polarities are generated alternately on the attracting surface composed of the attracting surfaces 4 and 4a. Therefore,
By reducing the arrangement pitch of the comb tooth-shaped ferromagnetic materials 1 and 5, shorter lines of magnetic force can be generated.

In this embodiment, the pitch between the north and south poles is 1 mm, but in consideration of strength, machinability, and operating characteristics, the pitch between the north and south poles is approximately 0.3 to 10 mm.

[Effect of idea]

As explained above, the present invention narrows the interval between the positive magnetic field and the reverse magnetic field generated on the attraction surface.
This has the effect of preventing the occurrence of positional deviations when picking up objects to be picked up, which must not cause small and relatively light positional deviations.

[Brief explanation of drawings]

1A and 1B are a partially cutaway plan view and a sectional view taken along the line A-A' of an embodiment of the present invention, respectively, and FIG. 2 is an exploded perspective view of the first and second ferromagnetic bodies shown in FIG. FIG. 3 is a perspective view of an example of a conventional electromagnet. 1, 1a... ferromagnetic material, 2... columnar part, 3...
Parallel grooves, 4, 4a, 4b...Adsorption surface, 5...Ferromagnetic material, 6...Conducting wire, 7...Power source.

Claims (1)

[Scope of utility model registration request] a first ferromagnetic material having a columnar portion and one of the opposing end surfaces of the columnar portion as a first attraction surface having a plurality of parallel grooves formed at predetermined intervals on the upper surface that generates a unipolar magnetic field; a second ferromagnetic body that is inserted into each of the parallel grooves separately from the first ferromagnetic body and has one end connected to the other surface of the columnar portion, and generates a magnetic field of a polarity opposite to the one polarity; An electromagnet characterized by comprising a conductive wire wrapped around the outer periphery of a columnar part.