JPH0684641A - Magnetizing method - Google Patents

Abstract

PURPOSE:To attract more than one magnetic members, which do not attract each other, through function of another magnetized member and a nonmagnetic member. CONSTITUTION:Magnetic members B and C attract each other through the field of a magnetized member A and a nonmagnetic member D is interposed between the magnetic member A and the magnetic members B, C so that magnetic attraction functions stronger between the magnetic members B and C than between the magnetic members A and B. After the magnetic member B is attracted to the member C under a state where the magnetic member B is attracted to the nonmagnetic member D through the field of the magnetic member A, the nonmagnetic member D is separated from the magnetic members A and B and then the magnetic member B is moved to the magnetic member C in order to be magnetized.

Description

Description: TECHNICAL FIELD The present invention relates to a magnetizing method for magnetically attracting magnetic substances to each other, and more specifically, to a magnetic substance that is not sufficiently magnetized to be attracted to each other in a normal state. A magnetizing method characterized in that B and C are selectively magnetically attracted by a magnetic field of a magnetized magnetic body A and a non-magnetic body D, which are different from the magnetic field, and a non-contact method with the magnetic body A. The present invention also relates to a magnetizing method characterized in that the magnetic body is moved by making the magnetic bodies B and C in an attracted state even in the state.

(Prior Art) As an example of a conventional magnetizing method, a case where an iron ball is attracted by a magnet will be described. In this case, the iron ball is magnetized, and if the iron ball is then brought into contact with another iron plate in that state, the magnet, the iron ball and the iron plate are magnetically attracted. However, conventionally, the attraction between the iron ball and the iron plate in this case has been eliminated by separating the magnet. That is, according to the conventional wisdom, the attractive force between the iron ball and the iron plate is smaller than the attractive force between the magnet and the iron ball. It was pulled away from the iron plate while being attracted to the magnet.

(Effect of the Invention) However, when the magnetizing method of the present invention is applied to the above-mentioned example, when the magnet is released, only the magnet can be separated from the iron ball while the iron ball is attracted to the iron plate.
That is, in the present invention, the attractive force between the iron ball and the iron plate can be selectively made larger than the attractive force between the magnet and the iron ball. It is a surprising and unexpected phenomenon that a simple magnetization method can be achieved simply by interposing a non-magnetic material between the magnet and the iron ball.

(Structure of the Invention) As the magnetic substance usable in the present invention, as long as it has a property of being magnetized by a magnetic field, a metal, an alloy, an intermetallic compound, a complex oxide, a ceramic,
Single or multiple substances can be selected from single crystals such as plastics, polycrystals, amorphous substances, powders, fluids, thin films and other arbitrary forms, but preferably those generally classified as ferromagnetic substances. Is good. Further, the magnetic substance may be coated with a non-magnetic substance as long as it does not hinder the magnetization, and may be formed into a composite with the non-magnetic substance. In addition, as the magnetic substance to be magnetized and used in the present invention, particularly,
A single magnet such as an electromagnet or a permanent magnet or other magnetism using a ferromagnetic material represented by KS steel, Alnico 5, Alnico 8, Sm-Co compound, Fe-Nd-B compound, ferrite and the like. A composite of a body and a non-magnetic body is preferable. Examples of the non-magnetic material that can be used in the present invention include paper, wood, ceramics, natural and synthetic resins, and non-magnetic metals such as thin films, hollow materials, and practically non-magnetic materials. Although it can be used in any shape such as a mesh shape, a weak magnetic substance is also used as long as it can hinder the three-dimensional barrier or magnetic adsorption with respect to the magnetized magnetic substance of the present invention. it can. The present invention is characterized in that the non-magnetic material D is present on the surface of the magnetized magnetic material A by coating or other means and is interposed between the magnetic materials A, B and C. The present invention is achieved only by the effect of the magnetic material D. That is, the present invention utilizes the effect of a non-magnetic material in which two or more magnetic materials that are not magnetized to be attracted to each other in an initial state are placed in a specific positional relationship, and a magnetic field from the outside. It is a method of magnetically adsorbing. At this time, it is possible to selectively increase the attraction force between the magnetic materials that were originally not magnetized, as compared with the magnetized magnetic material that is the source of the magnetic attraction.
The present invention is a novel magnetizing method that has never existed before. The present invention is
Further, by applying the above-mentioned features, it is very useful as a means for moving a magnetic body and is epoch-making.

(Example) As a specific example thereof, a case of moving an iron ball will be described below. As the magnetized magnetic body of the present invention, a cubic alnico-based permanent magnet A is used, and a plate D made of synthetic resin is brought into close contact with one side surface of the permanent magnet A to form the magnetic material AD.
And Apart from this, both are iron balls B and plates C
To use. B and C are hardly magnetized,
In the initial state, they do not stick to each other. First, the magnetic material B of an iron ball is magnetically attracted to the resin surface side of the magnetic material AD according to the present invention. (FIG. 1) Next, when the iron ball B still adsorbed on the AD is brought into contact with the magnetic body C of another iron plate, the magnetic attraction force acting between the iron ball B and the iron plate C is automatically , Iron ball B and magnetic material AD of the present invention
It becomes larger than the adsorption force between and. (FIG. 2) After this state, when the magnetic material AD of the present invention is moved in the direction opposite to the iron ball B and the iron plate C, the iron ball B is adsorbed on the iron plate C and is separated from the AD. Then, the movement of the iron ball B onto the iron plate C is completed. (FIG. 3) That is, in the present invention, the magnetic material B to be moved is more preferable than the magnetic material AD of the present invention.
Although the magnetic material C of the moving destination is selectively magnetically adsorbed, this selective adsorption effect is made possible by the presence of the synthetic resin D as a non-magnetic material. As a comparative example, when the same material as the above specific example is used and the iron ball B is adsorbed on the magnet side of the magnetic material AD (FIG. 4), when the iron plate C is contacted (FIG. 5), Since the magnetic attraction force acting between the iron ball B and the iron plate C is smaller than the attraction force between the magnetic material AD, when the magnetic material AD is moved in the opposite direction to the iron ball B and the iron plate C. The iron ball B also separates from the iron plate C together with AD, and as a result, the iron ball B cannot be moved onto the iron plate C (FIG. 6).

As can be seen from the above example, the magnetizing method of the present invention,
The effect of the non-magnetic material is indispensable, but the material, form, etc. of the non-magnetic material at this time are appropriately determined by the material, combination, etc. of the magnetized magnetic material to be used and the magnetic material to be attracted. It should be, and should not be limited by other factors.

[Brief description of drawings]

 1, 2, and 3 show one embodiment of the present invention. FIGS. 4, 5, and 6 show comparative examples. 1 is a magnetized magnetic substance A 2 is a non-magnetic substance D 3 is a magnetic substance B 4 is a magnetic substance C

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[Submission date] June 4, 1993

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FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a plan view showing an embodiment of the present invention.

FIG. 3 is a plan view showing an embodiment of the present invention.

FIG. 4 is a plan view showing a comparative example of the present invention.

FIG. 5 is a plan view showing a comparative example of the present invention.

FIG. 6 is a plan view showing a comparative example of the present invention.

[Description of Symbols] A is a magnetized magnetic material B is an unmagnetized magnetic material C is an unmagnetized magnetic material D is a non-magnetic material AD is a magnetic material

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Claims (1)

[Claims] 1. In the magnetization method of magnetically attracting the magnetic bodies B and C by the magnetic field of the magnetized magnetic body A, a non-magnetic body D is provided between the magnetic body A and the magnetic bodies B and C.
And a magnetic attraction force acting between the magnetic bodies B and C is made larger than a magnetic attraction force acting between the magnetic bodies A and B. 2. A non-magnetic material D is interposed between a magnetized magnetic material A and a magnetic material B at another position P, and the magnetic material B is attracted by a magnetic attraction force caused by the magnetic field of the magnetic material A. After adsorbing the magnetic material B to the magnetic material C while adsorbing the non-magnetic material D on the non-magnetic material D, the non-magnetic material D and the magnetic material A are both attached to the magnetic material B.
The magnetizing method, characterized in that the magnetic body B is further separated and moved from the position P to the magnetic body C.