JPS5840052B2 - Roller bearings using magnetic force - Google Patents

Description

[Detailed description of the invention] The present invention relates to a roller bearing that utilizes magnetic force.

The present applicant previously filed Japanese Patent Application No. 54-173243 for an invention entitled "Rolling Bearing Applying Magnetism."

In the rolling bearing of this prior invention, the rollers are magnetized, and the rollers rotate while closely contacting the inner L-race or the outer race while maintaining a constant distance therebetween.

In this prior invention, because of the above structure, the rollers are in close contact with the outer race or the inner race and rotate reliably, so the rollers do not cause sliding resistance, the rotational resistance of the rollers is reduced, and there is no retainer between the rollers. This has the advantage that the rollers can be kept at a constant distance even without the use of rollers.

However, according to the description of the prior invention, the roller is magnetized over its entirety, so if ferrite or the like is used as the material for the roller or race, it becomes brittle under high-load usage conditions and cannot obtain sufficient strength. I realized that there are flaws.

In order to solve this drawback, the present invention constructs the main body 2L31 of the roller 1 inner race 2 outer race 3 from a highly rigid metal, as shown in FIGS. 1-4, and the main body 21.
Magnets 22° 32 are placed on both sides of 31, and colorus 2, 3
The aim is to strengthen the

In reality, the roller 1 is constructed by attaching magnets 12 to both sides of the main body 11 with adhesive as shown in FIG. 1, or by protruding engaging projections 13 from both sides of the main body 11 as shown in FIG. A magnet 12 with a hollow hole 14 is fitted into the engaging protrusion 13 and bonded with an adhesive.

Note that at this time, the outer diameter of the magnet 12 is made slightly smaller than the outer diameter of the main body portion 11.

On the other hand, the races 2 and 3 are connected to the main body 21.3 as shown in FIG.
A magnet 22.3 having engaging protrusions 23, 33 protruding from both sides of the magnet 1 and having hollow holes 24, 34 in the engaging protrusions 23, 33.
Insert and glue 2.

Alternatively, attach the magnet 22.3 directly to the main body 21.31 with adhesive.
2 may be attached.

Note that the outer peripheral surface of the magnet 22 of the inner race 2 is
It is desirable to make the roller smaller than the outer peripheral surface of the roller 1 to avoid contact with the roller 1 magnet 12.

Similarly, it is desirable that the outer diameter of the inner circumferential surface of the engagement convex portion 33 of the outer race 3 is smaller than the outer diameter of the inner circumferential surface of the main body portion 31.

This structure prevents wear of the corollas 2 and 3 from the outside.

Examples thereof will be described below.

(1) In the embodiment shown in FIG. 5, the outer periphery of the inner race 2 is magnetized with a N pole, and the outer periphery of the roller 1 is magnetized with an S pole.

Therefore, the roller 1 is fixed by the outer race 3, the inner race 2 rotates in the direction of arrow Z2, and revolves in the direction of x2 while rotating in the direction of arrow y2 in FIG.

Thus, roller 1 comes into close contact with inner race 2 during rotation,
In addition, the distance between the rollers 1 is automatically maintained at a substantially constant distance because the S poles repel each other.

Therefore, there is no sliding on the contact surfaces between the inner race and the outer race, and the resistance during rotation is significantly reduced.

In reality, as shown in FIG. 3, N and S poles are arranged in parallel on both sides of the roller 1, and corresponding N and S poles are arranged on the inner race 2 as well.

(2) Also, fix the inner lace 2 as shown in Figure 6,
When the outer race 3 is rotated in the direction of the arrow x4, the roller 1 revolves in the direction of the arrow X4 while rotating in the direction of the arrow y4.

At this time, as in the case of Fig. 5, the S pole of roller 1 is attracted to the N pole of inner race 2, and the S poles of rollers 1 repel each other.
Colo 1 continues to rotate.

As in the case of FIG. 3, the roller 1 has N and S poles arranged on both sides thereof.

(3) FIG. 7 shows the case where the outer race 3 is magnetized.

That is, assuming that the N pole is magnetized on the inner circumference of the outer race 3, the inner race 2 is fixed and the outer race 3 is
When rotated in the direction of arrow Z and force, roller 1 rotates in the direction of arrow y,
While rotating in the force direction, it revolves in the arrow X and force direction.

In this case, the rollers 1 rotate while closely contacting the outer race, and the distance between the rollers 1 is also kept constant.

(4) Also, FIG. 8 shows a case where the inner race 2 is fixed to the outer race 3 and rotated in the Z6 direction.

At this time, the roller 1 rotates in the direction of arrow y6 and revolves in the direction of arrow x6.

In this case as well, the rollers 1 rotate while closely contacting the outer race 3 and keeping the distance between the rollers 1 constant.

(5) In the case of Figure 9 ■■, the inner race 2 is made of a non-magnetized magnetic material, the outer race 3 is made of stainless steel,
The case is shown in which only the roller 1 is magnetized using a non-magnetic material such as brass.

Now assuming that the outer race 3 is fixed and the inner race 2 rotates in the direction of the arrow X7, the roller 1 will move in the direction of the arrow y.
It rotates in 7 directions and revolves in the direction of arrow X7.

In this case, the N and S poles on both sides of the roller 1 are attracted to the inner race 2, so that the roller 1 is brought into close contact with the inner race 2.

In this embodiment, since the outer race 3 is a non-magnetic material, the roller 1 is in close contact only with the inner race 2, and the outer race 3 is in close contact with only the inner race 2.
This has the advantage that it does not interfere with the magnetic attraction action.

Conversely, the same effect can be achieved even if the inner race 2 is made of a non-magnetic material and the outer race 3 is made of a magnetic material.

Effects of the present invention: The mutual contact portions of the body parts 11, 21, and 31 of the roller 1, inner race 2, and outer race 3 that are to receive the load are made of a highly rigid magnetic or nonmagnetic material. Therefore, the magnets 12, 22, and 32 do not come into direct contact with each other, so the load does not increase, and the magnets 12, 22, and 32 do not come in direct contact with each other, and can handle high loads while taking full advantage of the characteristics of magnetic bearings, such as improved wear resistance and low frictional force. It became possible to endure.

[Brief explanation of drawings]

FIG. 1: A perspective view of the roller 1 of the bearing of the present invention; FIG. 2: A perspective view of the races 2 and 3; FIG. 3: A detailed perspective view of the roller 1.
Fig. 4 Detailed perspective view of two races 2 and 3, Fig. 5 ■: An example in which the non-magnetized outer race 3 is fixed and the magnetized inner race 2 is rotated, Fig. 5 ■: Fig. 5 ■ Fig. 6 is a vertical cross-sectional view of Fig. 6. 2. An example in which the magnetized inner race 2 is fixed and the non-magnetized outer race 3 is rotated.
Figure 2 An example in which the unmagnetized inner race 2 is fixed and the magnetized outer race 3 is rotated. Figure 8 2 An example in which the unmagnetized inner race 2 is rotated and the magnetized outer race 3 is fixed. Example, Fig. 9■: Fixing the outer race 3 made of non-magnetic material, and fixing the inner race 2 made of magnetic material.
FIG. 9 (■): A vertical cross-sectional view of FIG. 9 (■). 1: Colo, 2: Inner lace, 3: Outer lace,
11: Magnetic material of roller 1, 12: Magnet of roller 1, 13: Engagement convex portion of roller 1, 21, 31: Main body of inner race 2 outer race 3, 22° 32: Inner race 2 outer race 3 Magnet, 23.33: Inner lace 2
Engagement convex portions of outer race 3, 24, 34: Hollow holes.

Claims (1)

[Claims] 1. In a roller bearing that utilizes magnetic force in which the rollers 1 are magnetized and the rollers 1 rotate while closely contacting the inner race 2 or the outer race 3 and maintaining a constant distance from each other, the rollers 1 are A roller bearing characterized in that magnets 12 and 12 are arranged on both sides of a main body part 11. 2. The roller bearing according to claim 1, wherein the inner race 2 or the outer race 3 has magnets 22.32 arranged on both sides of the main body 21.31.