JP2000304088A - Rolling ball bearing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a rolling steel ball from leaving from brow both rolling surfaces to the outside and scattering in the displacement in an earthquake and to prevent the jogging of both upper and lower rolling surfaces by forming upper and lower magnetic pole rolling surfaces as the magnetic poles of a permanent magnet on the upper and lower rolling surfaces, and interposing the rolling steel balls between both the rolling surfaces. SOLUTION: Mutually opposed upper and loser rolling surfaces 1a, 1b have upper and lower magnetic pole rolling surfaces 1c, 1d formed as magnetic poles 3 by a permanent magnet 26 or a yoke 2, and flattened so as to be capable of rolling steel balls 2a thereon. The yoke 27 bears a vertical load and also protects the permanent magnet 26, and the yoke 27 is screwed to upper and lower support boards 28, 29 through a magnetic insulating plate 4 consisting of a nonmagnetic body by use of a screw 33 consisting of a nonmagnetic body. The periphery 10 of the upper and lower magnetic pole rolling surfaces 1c, 1d are enclosed by the magnetic insulating plate 4, and the upper and lower rolling surfaces 1a, 1b are also mutually insulated in the same manner. Further, the upper and lower support boards 28, 29 are screwed to the base part 35 and foundation of an article or structure or a ground 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling ball bearing device for seismic isolation.

[0002]

2. Description of the Related Art Rolling bearings are provided on the base of an article or structure and on a base or ground to isolate horizontal seismic motion. Rolling bearings and roller rolling bearings are among them. Rolling ball bearings include those using a large number of rolling balls and those using a single ball.
Rolling bearings are mechanically insulated, and are used regardless of the weight of the upper load, compared to laminated rubber bearings of the extended-cycle type, and have the advantage that seismic isolation can be expected over a wide frequency range.
Since the vertical rolling surfaces are not connected, the relative horizontal displacement due to large vertical displacement and horizontal displacement of the ground during a large earthquake motion is large, especially in the case of a rolling ball bearing using a large number of rolling balls. Rolling balls may be scattered outside the rolling surface due to separation between the running surfaces or the like, and may fall off and lose the seismic isolation function.

[0003] Roller rolling bearings and rolling ball bearings using monocytes can relatively easily mechanically restrain the rollers and monocytes. There is little risk of leaving. However, in a rolling ball bearing using a large number of rolling balls, there is no means to reliably prevent the rolling balls from being scattered or disengaged by an inexpensive, simple, and simple mechanical method. Since only rolling balls are interposed in the rolling surface, or only the means of filling or filling the viscous material between the rolling surfaces and applying or applying it, and providing a depression on the rolling surface are used, It is hard to say that it prevents scattering and separation.

[0004] For example, Japanese Patent Application Laid-Open No. 6-221030 discloses an example of an object seismic isolation device that prevents a large number of rolling balls from scattering and separating by providing a depression in a rolling surface. However, the sphere 4 simply interposed between the outer pressure receiving portion 6a and the outer pressure receiving portion 9 during a large earthquake motion.
Are easily scattered, and the sphere 4 interposed between the pressure transmitting unit 6 and the pressure receiving unit 10 is also provided with a gap d having an assumed earthquake amplitude, and is easily separated from the gap d space. The larger the assumed earthquake amplitude, the wider the gap d space width, and the holding member 1
It is conceivable that even when the depressions 4 and the depressions of the inclined portion 15 are prepared, the separation easily occurs during a large earthquake motion.

[0005] As an example of a vibration-isolating support device in which rolling balls are interposed between upper and lower rolling surfaces and a viscous material (grease) is applied or filled to prevent scattering and detachment, see, Cf. Hei 1-292653) is known. However, in the above, a large number of steel balls are scattered only by the adhesive force of the viscous material, because it is a means that is prevented from separating, during a large earthquake motion, when the vertical rolling surfaces are inclined or separated, It is considered that the scattering and detachment of the steel ball cannot be completely prevented only by the adhesive force of the viscous material.

[0006] It is difficult for a rolling ball bearing device using a large number of rolling balls to have resilience to the original position during an earthquake motion. In a rolling ball bearing device in which a rolling ball of a single ball is interposed between upper and lower rolling surfaces, it is possible to make both or one of the upper and lower rolling surfaces into a dish shape. However, when the upper and lower rolling surfaces are separated from each other during a large earthquake motion, the rolling ball of a single ball that is merely interposed does not follow and rolls, remains at the center point in the dish-shaped rolling surface, and does not seismically isolate. Therefore, in order to reliably follow and roll and seismically isolate and obtain resilience, the rolling ball of a single ball is rotatably restrained with low rotational friction resistance to prevent it from falling off or remaining in the vertical rolling surface I have to do it.

[0007] The rolling ball of the monosphere is restrained to prevent separation, and the ball rolls and seismically isolates without remaining in the dish-shaped rolling surface.
In addition, as an example of a rolling ball bearing device for a single ball, which is intended to obtain resilience to the original position, the ball bearing bearing described in 9.1 of the book "Easily understandable seismic isolation structure" published by the author's Seismic Isolation Technical Study Group is introduced. Is known.

The above means is to fix an upper hemisphere rolling surface plate to an upper structure and to rotatably hold a lower hemisphere portion of a rolling monosphere with a support cover. It is restrained by a hemispherical rolling surface plate. As a means of solving the problem of friction between the rolling ball of a single sphere and the hemispherical rolling surface of the upper hemispherical rolling surface plate, a rolling small sphere between the rolling large sphere and the hemispherical rolling surface Intermediate and rolling ball friction, reduce frictional resistance, and use means to circulate rolling small balls, so that the monoball rolling ball support device that completes the constraining means of the large rolling ball Can be estimated.

However, in the above method, the large rolling ball rolls and rolls following the horizontal displacement of the dish-shaped lower rolling surface due to the horizontal seismic motion. The rolling globules that have passed through the rolling surface are isolated from the rolling surface of the hemispheric rolling surface by the action of the contact rolling power between the rolling globules and the rolling large balls during the subsequent rolling seismic isolation. Tries to roll while being pushed upward against the gravity. At that time, it is considered that the rolling globules that are going to go up the guidance surface are pushed up in a sliding state while being held by the guide cover in a state where they are slightly separated from the guidance surface. In addition, the weight of a large number of rolling globules existing during the ascending process of the rolling globule circulation path provided on the upper surface of the upper hemisphere rolling face plate will be added, and the rolling globules to be rolled, It is thought that it will be pushed up more and more in a slip state.

In addition, since the contact surfaces of a large number of rolling small balls existing during the ascending process of the rolling small ball circulation path are in reverse rotation contact, the rotational friction resistance is large, and the sliding rise is further promoted. The curved surface of the rolling globule circulation path is steep, and as the number of rolling globules existing during the ascent process increases, the circulation friction resistance increases. Therefore, when the rolling small balls in the ascending rolling ball circulation path are congested, the rolling small balls during seismic isolation cannot roll, and therefore, between the rolling large ball and the rolling small ball, as a rolling ball bearing device. It is thought that the rolling function is lost, and it becomes a "sliding bearing device with a large number of rolling balls" with large circulating friction resistance.

[0011] Even in other conventional examples which are not described, especially in a rolling ball bearing device using a large number of rolling balls, a rolling ball is always stably present between upper and lower rolling surfaces on the premise of small earthquake motion. A rolling ball bearing device that assumes rolling and seismic isolation in the event of a seismic motion, and ensures that the rolling ball will not scatter or fall off assuming a large displacement of the ground during a large seismic motion. No ball bearing device is found.

Since the rolling ball bearing is of an insulating type, the vertical rolling surfaces are not mechanically connected to each other. Since the acceleration of gravity 1G is applied to the upper structure, there is no fear of falling unless the upper structure has a very large tower-like ratio, but the feeling of anxiety remains. Because the rolling ball bearing has an overwhelmingly small coefficient of rolling friction, the bearing itself does not stably stand still in normal times, but moves slightly due to strong side winds or micro-earthquake motion.
Other devices must be used to stop the micromotion.

[0013]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and provides a rolling ball bearing device which eliminates the problems of the above-mentioned technology by acquiring new technologies. As an issue.

[0014]

According to a first aspect of the present invention, there is provided a rolling ball bearing device in which a rolling steel ball 2a is interposed between an upper rolling surface 1a and a lower rolling surface 1b which are vertically opposed to each other. Regardless of the surface shape of the upper rolling surface 1a and the lower rolling surface 1b,
The upper rolling surface 1a and the lower rolling surface 1b are
To form an upper magnetic pole rolling surface 1c and a lower magnetic pole rolling surface 1d. Regardless of the number of rolling steel balls 2a to be used, the upper magnetic pole rolling surface 1c, in which the rolling steel balls 2a are vertically opposed, is formed. By being interposed between the lower magnetic pole rolling surface 1d and the horizontal horizontal displacement of the ground during a large earthquake motion, the rolling steel ball 2a can be placed on both the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d. In this case, magnetic attraction rolling occurs on one side, and thus scattering and separation outside the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d are prevented.
In addition, a number of rolling steel balls 2a are magnetically attracted to both the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d which are vertically opposed to each other and are connected to each other, thereby preventing the fine ball from moving.
It is a structure of.

According to a second aspect of the present invention, a predetermined dimension is set from the center point 0 of both the upper rolling surface 1a and the lower rolling surface 1b, ie, the radius of the predetermined horizontal relative displacement amplitude. A circular area with dimensions or a square area circumscribing a circle,
An upper magnetic pole rolling surface 1c and a lower magnetic pole rolling surface 1d formed as the magnetic pole 3 by the permanent magnet 26 or the permanent magnet 26 and the yoke 27, and a number of rolling steel balls 2a are freely interposed therebetween. Accordingly, at the time of large horizontal displacement of the ground during a large earthquake motion, the rolling steel ball 2a magnetically attracts and rolls on both the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d, and thus, the upper magnetic pole. Both the upper and lower magnetic pole rolling surfaces 1c and 1d are prevented from being scattered or separated from the rolling surface 1c and the lower magnetic pole rolling surface 1d, and the plurality of rolling steel balls 2a are vertically opposed to each other. The structure of the rolling ball bearing device A in which the both are connected by magnetic attraction to prevent the fine movement.

According to a third aspect of the present invention, a steel rolling surface 1e made of steel is used instead of one of the upper and lower magnetic pole rolling surfaces 1c and 1d. This prevents the rolling steel ball 2a from being magnetically attracted and rolled on either the upper magnetic pole rolling surface 1c or the lower magnetic pole rolling surface 1d at the time of a large horizontal displacement of the ground during a large earthquake motion, thereby preventing scattering and separation. 3. The rolling ball bearing device A according to claim 2, wherein the plurality of rolling steel balls 2a are magnetically attracted to either the upper magnetic pole rolling surface 1c or the lower magnetic pole rolling surface 1d to prevent fine movement. .

According to a fourth aspect of the present invention, in place of one of the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d, the nonmagnetic material rolling surface is formed of a nonmagnetic material. By setting it to 1 g, when the ground undergoes a large horizontal displacement during a large earthquake motion,
Rolling steel ball 2a is either upper magnetic pole rolling surface 1c or lower magnetic pole rolling surface 1
d to prevent the magnetic steel from rolling, thereby preventing scattering and departure, and allowing any one of the upper magnetic pole rolling surface 1c or the lower magnetic pole rolling surface 1d in which a large number of rolling steel balls 2a are vertically opposed. The rolling ball bearing device A according to claim 2, wherein the micromotion is prevented by magnetic attraction of the crab.

According to a fifth aspect of the present invention, the number of rolling steel balls 2a is set to a predetermined size by matching the magnetic pole interval between the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d. A large number of rolling elements are inserted into the cage 5 made of a ferromagnetic material or a non-magnetic material having a circular area having a radius dimension of the horizontal relative displacement amplitude or a rectangular area circumscribing the circle so as not to fall off. The steel balls 2a are further prevented from being scattered and separated, the rolling balls 2a are prevented from contacting each other, the rotational friction is reduced, and when the cage 5 made of a ferromagnetic material is used, the cage 5 is used as a magnetic path. When a cage 5 made of a non-magnetic material is used, the cage 5 magnetically insulates between a plurality of rolling steel balls 2a. In the event of a large horizontal displacement of the ground during a large earthquake motion using a smaller number of rolling steel balls 2a, both sides are magnetically attracted and rolled, magnetically attracted to each other to connect the two, thereby preventing fine movement, and the upper magnetic pole rolling surface. The rolling ball bearing device A according to any one of claims 2, 3 and 4, wherein the micro-motion is prevented by magnetically attracting to either 1c or the lower magnetic pole rolling surface 1d.

According to a sixth aspect of the present invention, the space between the lower rolling surface 1b and the pressure receiving surface 35 of the circular rolling table 6 and the circular rolling table 6
A plurality of rolling steel balls 2a are freely interposed between the steel ball return surface 36 and the steel ball guide cover 23, and the rolling balls are configured as steel ball circulation paths 37 of the rolling steel balls 2a between each other. In the bearing device, the pressure receiving surface 35 and the arc-shaped pressing surface 39 forming the outer peripheral edge of the circular rolling base 6 are formed as the magnetic pole 3 by the permanent magnet 26 or the permanent magnet 26 and the yoke 27, and further formed. By forming the inner surface from the lower end of the outer peripheral edge 10 of the steel ball guide cover 23 to a predetermined height as the magnetic pole steel ball guide surface 38, the rolling steel ball 2a is magnetically attracted at the time of large horizontal displacement of the ground during a large earthquake motion. Even if the lower rolling surface 1b does not separate from the lower rolling surface 1b and the magnetic pole rolling lower surface 8 of the circular rolling base 6 separates from the seismic isolation rolling, the rolling steel balls 2a retain the magnetic pole pressure. It is magnetically adsorbed on the surface 8 and is not scattered or separated. After the seismic isolation, the rolling steel ball 2a that has left the magnetic pole pressure receiving surface 8 has the arc-shaped pressing surface 39 and the magnetic steel ball guide surface 38 provided on the inner surface of a predetermined width from the lower end of the outer peripheral edge 10 of the steel ball guide cover 23. The action of both the magnetic attraction force and the magnetic attraction rolling force of the rolling steel ball 2a during the magnetic attraction rolling of the magnetic pole pressure receiving surface 8 easily pushes up the steel ball return surface 36, and the rolling steel ball 2a Ball circulation path 37
Circulate. Further, when the lower rolling surface 1b and the magnetic pole pressure receiving surface 8 of the circular rolling base 6 are separated from each other, the rolling steel ball 2a present on the steel ball return surface 36 becomes the arc-shaped pressing surface 39 and the magnetic steel ball guide surface. 38, the falling of the rolling steel ball 2a is prevented by the magnetic attraction blocking action with the rolling steel ball 2a during the magnetic attraction of the pressure receiving surface 8 of the magnetic pole. is there.

In the seventh aspect, the dish-shaped lower rolling surface 12 is provided.
A single rolling large ball 9 is placed at the center point 0 of the ball, and the upper hemisphere and the hemispheric rolling surface 15 of the upper hemispheric rolling surface plate 14 of the rolling large ball 9
In between, a number of outer rolling small steel balls 13 are freely interposed to form an outer rolling small ball pressure rolling path 16, and a number of outer rolling small steel balls 13 substantially filling the inside are formed. The position of the road surface line of the circumferential return road surface 20 of the outer rolling small ball circumferential return road surface ring 19 is interposed, and the level hemispheric line (horizontal hemispheric line is a horizontal hemispheric line. ) Or slightly more, and it is brought close to the level hemisphere line of the rolling large sphere 9 or slightly more than the whole circumference, and furthermore, is brought into contact with the whole circumference of the hemispherical rolling surface 15 to make the circumference. Return road surface 20
And a plurality of outer rolling small steel balls 13 are placed on the circumferential return road surface 20, and the hemispherical rolling surface 15 side with which the placed outer rolling small steel balls 13 are in contact is connected to the outer rolling small steel balls 13. An outer rolling small ball no-load rolling return path 17 is formed by expanding to a width slightly larger than the ball diameter, and the expanded hemispheric rolling surface 15 is formed as an inclined surface so as to be attached to the outer rolling small steel ball 13. A rolling small ball approach guide inclined surface 18 is formed, and an outer rolling small ball circumferential return road surface ring 19 is screwed to the lower end of the outer peripheral edge 10 of the hemispherical rolling surface 15 to be provided. 41
Is provided near the entire circumference of the lower hemisphere near the level hemisphere line of the rolling large sphere 9 and is provided below the outer rolling small sphere circumferential return road surface ring 19, and the rolling large sphere circumferential constraint cover ring 41 is provided. Is screwed to the lower end of the outer peripheral edge 10 of the hemispherical rolling surface 15 so that when the ground undergoes a large horizontal displacement during a large earthquake motion, the inside of the outer rolling small ball pressure rolling path 16 is isolated. The outer rolling small steel ball 13 that has finished moving falls into the outer rolling small ball no-load rolling return path 17 by its own weight, and the rolling power of the rolling large ball 9 in the horizontal displacement direction and the circumferential return road surface 20 road surface line Is located at or above the level hemispherical line of the rolling large sphere 9 and the outer rolling small steel ball 13 by the tilting action of the outer rolling small ball entry guide slope 18 with the inclined surface of the spherical surface of the rolling large ball 9. The outer rolling ball receiving pressure rolling path 16 is easily re-rolled without slipping.
The rolling large ball 9 rolls following the horizontal displacement in all directions until the end of the large earthquake motion, and the outer rolling small steel ball 13 rolls.
Revolves around the upper hemisphere of the rolling large ball 9 while rotating, and seismically isolates the outside rolling small ball pressure rolling path 16 and falls again into the outside rolling small ball no-load rolling return path 17. And the configuration of the rolling ball bearing device C that circulates with low circulating frictional resistance.

In the eighth aspect, the entire level circumference of the outer rolling small ball approach guiding inclined surface 18 and a part of the upper hemispherical rolling surface (15) connected thereto is formed by the permanent magnet 26 or the permanent magnet 26. The outer rolling small ball no-load rolling return path at the time of large horizontal displacement of the ground during a large earthquake motion by forming the outer rolling small ball magnetic attraction introduction surface 21 as the magnetic pole 3 by the permanent magnet 26 and the yoke 27. 17, the outer rolling small ball is rolled into the blank rolling surface 16 by the horizontal displacement rolling force of the rolling large ball 9 and becomes a blank. The outer rolling small steel ball 13 that is about to roll into the rolling path 16 has an outer rolling rolling force in the direction of the outer rolling small ball receiving pressure rolling path 16 due to the horizontal displacement rolling power of the rolling large ball 9, and an outer rolling. Circumferential return path of small ball no-load rolling return path 17 Due to the effect of the inclination of the upper hemisphere because the position of the road surface line 20 is located on the upper hemisphere side of the rolling large sphere 9, the magnetic attraction of the outer rolling small spherical magnetic attraction introducing rolling surface 21 further formed as the magnetic pole 3. The outer rolling small steel ball 13 is sucked up by the force and the outer rolling small ball
The structure of the rolling ball bearing device C according to claim 7, wherein the magnetic ball attracts the ball to the outside rolling ball receiving pressure rolling path 16 without sliding more easily and performs the same operation as described above.

According to the ninth aspect, the whole outer spherical surface of one center rotation large ball 22 is fitted into the retainer 5 with a plurality of outer revolving small balls 42 at equal intervals, and is included together with the retainer 5. To form a rotation-revolution composite rolling ball 43, the rotation-revolution composite rolling ball 43 is mounted on the center point 0 of the dish-shaped lower rolling surface 12, and the mounted rotation-revolution composite rolling ball 43 is further mounted. On the outer revolving rolling sphere 42 located on the upper hemisphere of the central rotation rotating large sphere 22, the hemispherical rolling surface 15 of the upper hemispherical rolling surface plate 14,
It is placed so as to be in even contact with each other to form the outer revolving small ball pressure passage 24, and the rotation and revolving compound rolling ball restraining ring 44 is screwed to the lower edge of the outer peripheral edge 10 of the hemispherical rolling surface 15. With the configuration provided, the outer side of the rotation-revolution composite rolling ball 43 fitted into the retainer 5 follows the horizontal displacement of the dish-shaped lower rolling surface 12 during a large displacement of the ground during a large earthquake motion. The orbital rolling small ball 42 rotates and rotates, and the central rotating large ball 2 rotates.
2 revolves around the outer spherical surface, the central orbiting large ball 22 rotates, and the outer orbiting rolling ball 42 fitted into the retainer 5 in the outer orbiting rolling ball pressure passage 24 bears a vertical load. ,
While transmitting, the hemispherical rolling surface 15 rolls, and at the same time, revolves on the central rotating large ball 22 surface, and rolls following the large horizontal displacement in all directions and seismically isolated. I do. Hemisphere rolling surface 1
A rotation-revolving compound rolling ball restraining ring 44 screwed to the lower end edge of the outer peripheral edge 10 of the outer ring 5 includes an outer revolving rolling ball 42 fitted into the retainer 5 of the rotating-revolution compound rolling ball 43. Since the lower hemisphere portion is partially restrained over the level circumference, even if the rotation-revolution complex rolling ball 43 and the dish-shaped lower rolling surface 12 are temporarily separated from each other, the rotation-revolution complex rolling ball 43 Is a configuration of a rolling ball bearing device D that is rotatably restrained and is prevented from scattering and separating.

In the tenth aspect, the dish-shaped lower rolling surface 1
The upper vertical load supporting plate surface 11a and the lower vertical load supporting plate surface 11b are formed opposite to the outer peripheral edge 10 of both the upper and lower hemispherical rolling surface plates 14 and provided on the lower vertical load supporting plate surface 11b. The vertical load supporting board surface 11a is placed, and a small gap 45 is provided between the lower end of the rolling large ball 9 or the rotation revolving compound rolling ball 43 and the dish-shaped lower rolling surface 12, so that the normal The rolling large ball 9 or the revolving and revolving compound rolling ball 43 does not bear the vertical load, and the opposing outer peripheral edges 10
The upper vertical load support board surface 11a and the lower vertical load support board face 11b provided in the first section bear the vertical load. Therefore, it is possible to prevent a slight movement during normal times as much as possible.
It is a structure of the rolling ball bearing device C or D of the description.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings based on embodiments. FIG.
FIG. 1 is a longitudinal sectional view of a rolling ball bearing device A described in FIG.
FIG. 2B is a partially enlarged longitudinal sectional view of FIG. FIG. 2 is a plan view showing an area within a predetermined range of the lower magnetic pole rolling surface 1d in the lower rolling surface 1b. (The predetermined area of the upper magnetic pole rolling surface 1c within the upper rolling surface 1a is also not shown because it is also the same.) From both center points 0, a predetermined area, that is, a circular area (shown by a dashed-dotted circle in FIG. 2) or a square area circumscribing the circle (hereinafter referred to as a radius) having a predetermined horizontal relative displacement amplitude as a radial dimension. For example, a rectangular area having a radius dimension of 25 cm amplitude (2500 square centimeters) may be used as the magnetic pole 3 by using the permanent magnet 26 or the permanent magnet 26 and the yoke 27. Upper magnetic pole rolling surface 1c and lower magnetic pole rolling surface 1 formed as
d.

The upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d are flat surfaces necessary for rolling the rolling steel ball 2a, and bear a vertical load together with the rolling steel ball 2a freely interposed therebetween. The magnetic pole 3 is formed by using the permanent magnet 26 itself made of a material that can withstand the load, such as strength, hardness, impact, or the like, or by using the permanent magnet 26 and the yoke 27.

In this embodiment, the permanent magnet 26 and the yoke 27
The yoke 27 bears a vertical load, protects the permanent magnet 26, and
Is made of a non-magnetic material with a magnetic insulating plate 4 made of a non-magnetic material, for example, a non-ferrous material having the same strength as 18-8 stainless steel or steel interposed between the upper and lower support disks 28 and 29. It is screwed with a screw, for example, an 18-8 stainless screw 33. The outer peripheral edge 10 of the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d is also surrounded by the magnetic insulating plate 4, so that both the upper rolling surface 1a and the lower rolling surface 1b are similarly insulated. Upper support plate 28
The lower support plate 29 is screwed to the base 25 of the article or structure and the base or ground 30. When the upper support plate 28 and the lower support plate 29 are made of the same non-magnetic material as the magnetic insulating plate 4, it is not necessary to interpose the magnetic insulating plate 4 therebetween.

The upper and lower magnetic poles of the yoke 27 are equally spaced in the XX direction (shown in FIG. 2) by being insulated by a non-magnetic insulating material 31 such as brass or other non-ferrous material. A rolling surface 1c and a lower magnetic pole rolling surface 1d are formed. Magnetic poles 3 of upper magnetic pole rolling surface 1c and lower magnetic pole rolling surface 1d opposed vertically.
In order to obtain a magnetic attraction connection in normal times, a mutually opposite pole pair is used. The determination of the magnitude of the magnetic force of the magnetic pole 3 is determined by the type of permanent magnet 2 required to satisfy the magnetic attraction required by the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d.
6 and a combination method are selected and used. In the case of the rolling ball bearing device A according to the first or second aspect, strong magnetic attraction is necessary to magnetically connect the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d to prevent fine movement. And a permanent magnet 2 of a type having a magnetic attraction force necessary to satisfy this.
6 and a combination method are selected and used. When the rolling steel ball 2a is used only for the purpose of preventing the steel ball rolling surface 2c from being scattered or separated from the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d, a strong magnetic attraction force is not required.

The permanent magnets necessary for satisfying the magnetic attraction force of the permanent magnet 26 forming the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d and the magnetic pole 3 formed by the permanent magnet 26 and the yoke 27 There are various selections and combinations of the 26 types. The rolling ball bearing device A utilizes the magnetic attraction force of the permanent magnet 26. Similarly, as a permanent magnet application device that also utilizes the magnetic attraction force, general-purpose magnet-type lifting / conveying devices and magnet chucks are already widely used. Used. In order to select the magnetic attraction required by the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d, the above-described latest utilization technology is used to select the type of the permanent magnet 26 and to use a combination method. The required upper magnetic pole rolling surface 1c and lower magnetic pole rolling surface 1d of the required magnetic attraction force can be obtained. In this example, a description will be given assuming that a general combination method using a general permanent magnet 26 is used from among the above-mentioned utilization techniques.

The properties of the permanent magnet 26 are as follows.
When the permanent magnet 26 and the permanent magnet 26 are in the magnetic attraction state, and between the permanent magnet 26 and the ferromagnetic material, there is a magnetic attraction force that cannot be separated by an easy force to separate them in the direction of the magnetic force line in the magnetic field. When a horizontal shearing force across the line of magnetic force acts between the two, the two can be laterally shifted with a relatively small force in a magnetically attracted state. The solid line arrows in the figure indicate the traveling direction and the rotation direction, the two-dot chain line arrows indicate the horizontal displacement direction, and the broken lines in the figure indicate the lines of magnetic force.

A large number of rolling steel balls 2a are freely interposed between the opposed upper magnetic pole rolling surface 1c and lower magnetic pole rolling surface 1d, and magnetically attracted to both, thereby forming the upper magnetic pole rolling surface 1c. Between the lower magnetic pole rolling surface 1d and the lower magnetic pole rolling surface 1d.
, And magnetic coupling is prevented, and fine movement is prevented by magnetic adsorption.

Between the magnetic poles 3 of the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d having a rectangular area having a radius of 25 cm as described above, a number of rolling steel balls 2a are magnetically attracted to both. When a large seismic motion occurs and the lower magnetic pole rolling surface 1d of the lower support plate 29 fixed to the base or the ground 30 undergoes a horizontal relative large displacement in the direction of the two-dot chain line arrow in the 25 cm XX direction, the upper magnetic pole A large number of rolling steel balls 2a freely interposed between the rolling surface 1c and the lower magnetic pole rolling surface 1d can be easily combined with the low rolling friction of the rolling steel balls 2a while being magnetically attracted and connected to both. Then, the magnetic attraction and rolling follow the half distance and 12.5 cm in the same direction.

When the rolling steel ball 2a is freely interposed in the entire area between the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d having a rectangular area having a radius of 25 cm amplitude,
When the lower magnetic pole rolling surface 1d horizontally displaces the full amplitude of 25 cm, the rolling steel ball 2a at the tip rolls 12.5 cm beyond the opposed upper magnetic pole rolling surface 1c and rolls. 11. The rolling steel ball 2a at the end is located outside the upper magnetic pole rolling surface 1c.
Five centimeters will remain. Accordingly, the upper rolling surface 1a and the lower rolling surface 1b having a width of 12.5 cm or more (may be slightly larger) are provided on the entire outer peripheral edge 10 of the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d. Unless a series of rolling surfaces are secured and prepared, the rolling steel balls 2a at the front and rear ends in the horizontal relative displacement direction are in an unstable state where they are magnetically attracted to only one of them. In consideration of the weight and stability of the vertical load, the center point is 0 to 12.5 cm within the area of the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d having a radius of 25 cm amplitude. When the rolling steel balls 2a are interposed only within a rectangular area having a radius, even if the rolling steel balls 2a follow and roll, the rolling between the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d does not occur. Stay between each other. Therefore, in this case, the upper and lower rolling surfaces 1a and 1b having a width of 12.5 cm or more are secured on the entire outer peripheral edge 10 of the upper and lower magnetic pole rolling surfaces 1c and 1d. You may.

FIG. 3 shows a rolling ball bearing device A according to the second embodiment.
FIG. 4 is a longitudinal sectional view showing a state in which a horizontal relative displacement of the upper magnetic pole rolling surface 1 having a rectangular area having a radius of 25 cm amplitude is shown.
c and the lower magnetic pole rolling surface 1d are provided with an upper rolling surface 1a and a lower rolling surface 1b having a width of 12.5 cm or more on the entire outer peripheral edge 10 thereof. In this case, the rolling steel ball 2a is freely interposed between the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d having a rectangular area (2500 square centimeters) having a radius dimension of 25 cm amplitude. Used.

Following a large horizontal displacement of the ground 30 due to a large earthquake motion, a series of lower rolling surfaces 1b and lower magnetic pole rolling surfaces 1d
When a large horizontal relative displacement is made with a full amplitude of 25 cm in the direction indicated by the two-dot chain line arrow in the -X direction, the rolling steel ball 2a follows the same direction by 12.5 cm and magnetically rolls. The rolling steel ball 2a at the tip, which has rolled over 12.5 cm, is located within 625 square centimeters between the lower magnetic pole rolling surface 1d and the upper rolling surface 1a and is magnetically attached to the lower magnetic pole rolling surface 1d. The rolling steel ball 2a between the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d is attracted, and the rolling steel ball 2a between the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d or between the same magnetic poles. In any case, the rolling steel ball 2a becomes a magnetic path, and the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d are magnetically attracted and connected to each other. The rolling steel ball 2a remaining at the rear end of the centimeter is located within 625 square centimeters between the lower rolling surface 1b and the upper magnetic pole rolling surface 1c, and is magnetically attracted to the upper magnetic pole rolling surface 1c and continues. Following the repetitive large horizontal relative displacement of the ground 30 in all directions, the rolling steel ball 2a stably bears the vertical load and magnetically rolls,
Seismically isolated without scattering or leaving. In the event of a large displacement of the ground during a large earthquake motion, even if they are separated from each other, the rolling steel ball 2a magnetically attracts to any one, does not scatter and separate, and continues to magnetically attract and roll after both are reunited. Seismic isolation.

The ball diameter of the plurality of rolling steel balls 2a interposed between the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d depends on the weight of the vertical load and the distance between the upper structure and the ground. The ball diameter of the rolling steel ball 2a is determined in advance by using a general-purpose steel ball from the viewpoint of economy, taking into consideration the number of rolling ball bearing devices A provided in the vehicle, and the interval between the magnetic poles 3 and the permanent magnet The distance between the magnetic poles 3 is determined based on the size of the general-purpose permanent magnet 26 to be used and the general-purpose size of the general-purpose permanent magnet 26 to be used, and the optimum ball diameter of the rolling steel ball 2a is determined. If the sphere diameter is too large, the magnetic attraction force is also affected. If the gap between the magnetic poles is large within the fixed area between the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d, the diameter of the rolling steel balls 2a can be increased. The ball diameter of 2a can be made small, a large number is used, and the vertical load can be distributed more.

FIG. 4 (a) is a longitudinal sectional view showing a state in which the rolling ball bearing device A according to the third aspect is horizontally displaced relative to each other. 1c has an upper rolling surface 1a having a width of 12.5 cm or more on the entire outer peripheral edge 10, and the steel rolling surface 1e also has a corresponding width. In this case, within the area of the upper magnetic pole rolling face 1c having a square area (2500 square centimeters) having a radius dimension of 25 cm amplitude, the center point 0 to 1
Rolling steel balls 2a are used only in a square area (1250 square centimeters) having a radius of 2.5 cm with the steel balls 2a interposed therebetween.

Following a large horizontal displacement of the ground 30 due to a large earthquake motion, when the steel rolling surface 1e is relatively horizontally displaced by a full 25 cm amplitude in the direction indicated by the two-dot chain line arrow in the XX direction, it rolls as described above. The steel ball 2a rotates 12.5 cm in the same direction by magnetic attraction. Even if the upper magnetic pole rolling surface 1c is magnetically attracted and rolled by following 12.5 cm, both the front and rear end rolling steel balls 2a are magnetically attracted to the upper magnetic pole rolling surface 1c. Following the repetitive large horizontal relative displacement of the ground 30 in all directions, the rolling steel ball 2a stably bears the vertical load, performs magnetic attraction rolling, and seismically isolates without scattering and separation. . In the event of a large displacement of the ground during a large earthquake motion, the rolling steel ball 2a magnetically attracts to the upper magnetic pole rolling surface 1c and does not scatter or separate even if the two are separated from each other. Adsorb and roll to seismically isolate. A magnetic path is not formed between the upper magnetic pole rolling surface 1c and the steel rolling surface 1e, so that the magnetically attracted connection is not established. However, the rolling steel ball 2a is magnetically attracted to the upper magnetic pole rolling surface 1c in normal times. It does not move slightly and stably distributes the vertical load.

FIG. 4B shows the upper rolling surface 1a of FIG.
Is a longitudinal sectional view showing a state in which an additional magnetic pole rolling surface 1f having the same specification as the upper magnetic pole rolling surface 1c is connected in series and horizontally displaced relative to each other. It has. In this case, a rolling steel ball 2a is used to interpose the entire area of the upper magnetic pole rolling surface 1c having a square area (2500 square centimeters) having a radius dimension of 25 cm amplitude.

Following a large horizontal displacement of the ground 30 due to a large earthquake motion, when the steel rolling surface 1e is relatively horizontally displaced by a full 25 cm amplitude in the direction indicated by the two-dot chain line arrow in the XX direction, the rolling is performed as described above. The steel ball 2a rotates 12.5 cm in the same direction by magnetic attraction. The tip rolling steel ball 2a that has rolled over 12.5 cm is located within 625 square centimeters between the additional magnetic pole rolling surface 1f and the steel rolling surface 1e, and is magnetized on the additional magnetic pole rolling surface 1f. The rolling steel ball 2a within 1250 square centimeters between the upper magnetic pole rolling surface 1c and the steel rolling surface 1e is magnetically attracted to the upper magnetic pole rolling surface 1c, and is attracted to the rear end by 12.5 cm. The remaining rolling steel ball 2a is magnetically attracted to the upper magnetic pole rolling surface 1c within 625 square centimeters between the upper magnetic pole rolling surface 1c and the steel rolling surface 1e. The rolling steel ball 2a stably bears the vertical load following the repeated large horizontal relative displacement in the direction, and the upper magnetic pole rolling surface 1c
And the additional magnetic pole rolling surface 1f to perform magnetic attraction rolling and seismic isolation without scattering and separation. In the event of a large displacement of the ground during a large earthquake motion,
Even if the two are separated from each other, the rolling steel ball 2a keeps the upper magnetic pole rolling surface 1
c and the additional magnetic pole rolling surface 1f are magnetically attracted, do not scatter and separate, and after reunion, continue to magnetically attract and roll to seismically isolate. A magnetic path is not formed between the upper magnetic pole rolling surface 1c and the steel rolling surface 1e, so that the magnetically attracted connection is not established. However, the rolling steel ball 2a is magnetically attracted to the upper magnetic pole rolling surface 1c in normal times. It does not move slightly and stably distributes the vertical load.

In the rolling ball bearing device A according to claim 4, a non-magnetic material formed of a non-magnetic material is used in place of one of the upper and lower magnetic pole rolling surfaces 1c and 1d opposed to each other. The body rolling surface is 1 g. The material of the non-magnetic rolling surface 1g is a non-ferrous material having a strength equivalent to that of steel, for example, 18-8 stainless steel or a synthetic resin material, or a concrete material, since the rolling steel balls 2a roll under a vertical load. Material.

In the case where either the upper magnetic pole rolling surface 1c or the lower magnetic pole rolling surface 1d is opposed to the non-magnetic material rolling surface 1g, the area within the area of the upper magnetic pole rolling surface 1c is the same as described above. A square area (1250) having a radius 12.5 cm from the center point 0
(Square centimeters), the steel ball 2a is used interposed therebetween, or the additional magnetic pole rolling surface 1f is provided on the upper magnetic pole rolling surface 1c.
Are connected in series, and a rolling steel ball 2a can be interposed in the entire area of the upper magnetic pole rolling surface 1c to be used. The magnetically attracted state of the rolling steel ball 2a and its operation are the same as described above.

FIG. 5 (a) shows the second embodiment of the present invention.
FIG. 5 is a schematic perspective explanatory view of a partially cut-away view showing a state in which a rolling steel ball 2a is inserted into a retainer 5 using two thin plates and used in the rolling ball bearing device A according to 3 or 4; 5
5B is a cross-sectional view taken along the line AA in FIG.
(C) is a longitudinal sectional view of a partially cutout of the retainer 5 when a rolling steel ball 2a is fitted between two thick plates.

A ferromagnetic material or a non-magnetic material is used as the material of the retainer 5, and the steel balls 2a are rolled between two thin or thick plates.
Is used. Using a steel plate etc. as the ferromagnetic material,
As the non-magnetic material, 18-8 stainless steel or a hard synthetic resin material having a strength equivalent to steel or the like is used. Cage 5
Means that the rolling steel balls 2a are fitted into each other to further prevent scattering and detachment, avoid contact between the rolling steel balls 2a, maintain a distance between them, and make the rolling steel balls 2a rotatable. To restrain and reduce rotational friction between the individual members. In the case of the ferromagnetic cage 5, the cage 5 is used as a magnetic path,
In the case of the retainer 5 made of a non-magnetic material, the retainer 5 is used for magnetically insulating between a plurality of rolling steel balls 2a. A smaller number of rolling steel balls 2a are used to disperse the vertical load, stably support and roll.

The upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1
The rolling steel ball 2a is used in such a manner that the rolling steel ball 2a is interposed in a rectangular area having a radius of 50 cm and 25 cm. Similarly, the outer dimensions of the retainer 5 are defined as predetermined dimensions.
That is, the cage 5 having a square area having a radius of 50 cm and a radius of 25 cm is used. In addition, the upper rolling surface 1a
When the width of the rolling surface of the lower rolling surface 1b is widely used without any limitation, the outer dimension of the cage 5 is large regardless of the above, and in that case, more stable rolling is performed. And can bear vertical loads.

The position where the rolling steel ball 2a is fitted into the retainer 5 is in the XX direction (shown in FIG. 2), which is a combination of different magnetic poles on the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d. In accordance with the magnetic pole interval, the Y-Y direction (shown in FIG. 2), which is an extension of the same pole, may be the same as the magnetic pole interval in the XX direction. It is assumed that the retainer 5 is fitted into the entire area of the retainer 5 by opening it at a position having an average interval so as to evenly distribute the vertical load.

The thickness of the thin plate of the cage 5 made of a ferromagnetic material or a non-magnetic material using two thin plates has a strength capable of reliably holding the rolling steel ball 2a which rolls during a large horizontal displacement during an earthquake motion. In the case of a ferromagnetic plate, a ferromagnetic plate having a thickness that does not cause magnetic saturation is used. Pressing or the like is performed at the position of the two thin plates to open a fitting hole 34 with a flange. Rolling steel ball 2a in the recess of fitting hole 34 formed between
The ball head 47 is exposed to the outside of the plate surface so as not to fall off the steel ball 2a with both flanges, and is rotatably rollable so that the ball head 47 is closely fitted and held, and the two thin plates are spot welded or bonded. The rolling steel ball 2a is restrained by joining with a material or the like.

In the case where two thick plates are used together, the ball head 47 of the steel ball 2a rolling to the above-mentioned position is positioned between the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d, or any one thereof. And the steel rolling surface 1e and the non-magnetic material rolling surface 1g are exposed to both surfaces and have a combined thickness that does not hinder the rolling between them. Bolts from the inner surface side of the two thick plates to the same position as above
A hemispherical fitting hole 34 in which the rolling steel ball 2a does not fall off is opened by a ring or the like, and the ball head 47 is rotatably rolled into the spherical fitting hole 34 formed between the two pieces. Are exposed, closely inserted and held, and the two sheets are screwed or welded or joined with an adhesive or the like to restrain the rolling steel ball 2a. In addition, it is free to use a thin plate or a thick plate,
It is determined by comparing the area of the cage 5 and the economical efficiency.

FIG. 6 (a) is a longitudinal sectional view showing a state in which the rolling steel ball 2a is inserted into the retainer 5 in the rolling ball bearing device A according to claim 3 and horizontally displaced relative to each other. The upper magnetic pole rolling surface 1c and the steel rolling surface 1e are vertically opposed to each other, and the entire outer peripheral edge 10 of the rectangular upper magnetic pole rolling surface 1c having a radius of 25 cm amplitude has a width of 12.5 cm or more. , And the steel rolling surface 1e also has a corresponding width. In this case, rolling steel balls 2a are inserted into and interposed between cages 5 made of a ferromagnetic material having the same area as the upper magnetic pole rolling surface 1c. (A diagram using two thin plates is used, but the same applies when a thick plate is used.)

Following the large horizontal displacement of the ground 30 due to the large earthquake motion, when the steel rolling surface 1e is relatively horizontally displaced by a full 25 cm amplitude in the direction of the two-dot chain line arrow in the XX direction, the rolling steel ball 2a is moved. 11. The retainer 5 made of the ferromagnetic material inserted thereinto is
It rolls by magnetic attraction following the same direction by 5 cm. Cage 5
Is located within 625 square centimeters between the upper rolling surface 1a and the steel rolling surface 1e, exceeding the upper magnetic pole rolling surface 1c by 12.5 cm. Between the upper magnetic pole rolling surface 1c and the steel rolling surface 1e.
The rolling steel ball 2a inserted into the ferromagnetic retainer 5 within 0 square centimeter has a magnetic path formed by the ferromagnetic retainer 5, and the retainer 5 and the rolling steel ball 2a are integrated magnetic fields. As a path, magnetically attracted to the upper magnetic pole rolling surface 1c, and the rolling steel ball 2a remaining at the rear end of 12.5 cm is 625 square centimeters between the upper magnetic pole rolling surface 1c and the steel rolling surface 1e. The rolling steel ball 2a fitted in the cage 5 made of a ferromagnetic material has a magnetic path formed by the cage 5 made of a ferromagnetic material, and a magnetic path formed by integrating the cage 5 and the rolling steel ball 2a. As a result, the magnetic steel ball 2a magnetically attracts to the upper magnetic pole rolling surface 1c, and follows the repeated large horizontal relative displacement of the ground 30 in all directions. Magnetically attracts and rolls stably on the magnetic pole rolling surface 1c, and seismically isolates without scattering or separation.

When the ground is displaced during a large earthquake motion, the rolling steel balls 2a are magnetically attracted to the upper magnetic pole rolling surface 1c even if the two are separated from each other, and the upper magnetic pole rolling surface 1c is attached to the tip end. 5
The rolling steel ball 2a, which exceeds the centimeter and is within 625 square centimeters between the upper rolling surface 1a and the steel rolling surface 1e, is fitted into the retainer 5, so that the retainer further left at the rear end. 5 is magnetically attracted to the upper magnetic pole rolling surface 1c and does not scatter or separate, and after reunion, both continue to be magnetically attracted and rolled to the upper magnetic pole rolling surface 1c. Shake. A magnetic path is not formed between the upper magnetic pole rolling surface 1c and the steel rolling surface 1e, so that the magnetically attracted connection is not established. However, the rolling steel ball 2a is magnetically attracted to the upper magnetic pole rolling surface 1c in normal times. It does not move slightly and stably distributes the vertical load.

FIG. 6 (b) is a view similar to FIG. 6 (a). In this case, the rolling steel ball 2a is inserted between the cages 5 made of a non-magnetic material having the same area as the upper magnetic pole rolling surface 1c. It is a longitudinal cross-sectional view which shows the state which carried out the horizontal relative displacement at the time of interposition.

When the steel rolling surface 1e follows a large horizontal displacement of the ground 30 due to a large earthquake motion and undergoes a horizontal relative large displacement of 25 cm in amplitude in the direction indicated by the two-dot chain line in the XX direction, it becomes a nonmagnetic material. The rolling steel ball 2a fitted into the retainer 5 is magnetically attracted, and the retainer 5 follows the same direction by 12.5 cm and rolls. The tip end of the retainer 5 exceeds the upper magnetic pole rolling surface 1c by 12.5 cm and the upper rolling surface 1a and the steel rolling surface 1e.
Between the upper magnetic pole rolling surface 1c and the steel rolling surface 1e. The rolling steel ball 2a fitted into the retainer 5 made of a magnetic material forms a magnetic path, and the steel rolling surface 1e forms an integral magnetic path via the rolling steel ball 2a. The area between 1250 square centimeters between the rolling surface 1e and the rolling surface 1e is in a state of magnetic attraction connection. The rolling steel ball 2a of the retainer 5 remaining at the rear end of 12.5 cm is also located within 625 square centimeters between the upper magnetic pole rolling surface 1c and the steel rolling surface 1e, and is made of a non-magnetic material. Vessel 5
The rolling steel ball 2a inserted into the steel ball 2a forms a magnetic path, and the steel rolling surface 1e forms an integral magnetic path via the rolling steel ball 2a, so that the upper magnetic pole rolling surface 1c and the steel rolling surface 1e are magnetic. It becomes a suction connection state. Following the repeated horizontal relative large displacement of the ground 30 in all directions, the rolling steel balls 2a fitted into the cage 5 disperse and bear the vertical load, and stably move the upper magnetic pole rolling surface 1c. And the steel rolling surface 1e is magnetically attracted and rolled, and seismically isolated without scattering and separation.

In the event of a large displacement of the ground during a large earthquake motion, the rolling steel ball 2 a
Are magnetically attracted to the upper magnetic pole rolling surface 1c by magnetic induction, and the distance between the upper rolling surface 1a and the steel rolling surface 1e exceeds the upper magnetic pole rolling surface 1c by 12.5 cm. Since the rolling steel ball 2a within 625 square centimeters is fitted in the retainer 5, it does not scatter and separate, and the rolling steel ball 2a fitted in the retainer 5 remaining at the rear end is an upper magnetic pole rolling surface. The magnetic poles 1c are individually magnetically attracted by magnetic induction, do not scatter and separate, and after the two are reunited, the upper magnetic pole rolling surface 1c and the steel rolling surface 1e continue.
At the same time, magnetic absorption rolling and seismic isolation. Note that, in normal times, a magnetic path is formed between the upper magnetic pole rolling surface 1c and the steel rolling surface 1e, and the magnetic pole is magnetically attracted and connected.

In the above-mentioned claim 4, the upper magnetic pole rolling surface 1
In the case where c and the nonmagnetic material rolling surface 1g are opposed to each other, the area of the ferromagnetic or nonmagnetic material
If the ferromagnetic cage 5 is used, the rolling steel ball 2a and the ferromagnetic cage 5 form a magnetic path, and the upper magnetic pole rolling surface 1c is used.
Magnetically adsorbs, and rolls magnetically. When the non-magnetic cage 5 is used, the rolling steel balls 2a are individually magnetically attracted to the upper magnetic pole rolling surface 1c by magnetic induction, and are magnetically attracted and isolated. The upper magnetic pole rolling surface 1c and the non-magnetic material rolling surface 1
g, a magnetic path is not formed and the magnetically attracted connection is not formed. However, in normal times, the rolling steel ball 2a is magnetically attracted to the upper magnetic pole rolling surface 1c and does not move slightly, and the vertical load is dispersed stably. To bear.

On the entire outer peripheral edge 10 of the upper magnetic pole rolling face 1c having a rectangular area having a radius dimension of 25 cm amplitude, an additional magnetic pole having a width of 12.5 cm or more and having the same specification as the upper magnetic pole rolling face 1c. A running surface 1f is connected in series and provided with a steel rolling surface 1f.
e is the same size, and the area of the ferromagnetic cage 5 is 2500
When used as a square centimeter, the rolling steel ball 2a and the ferromagnetic retainer 5 form a magnetic path, and are not magnetically attracted to the upper magnetic pole rolling surface 1c and the additional magnetic pole rolling surface 1f, and do not move slightly. Rolls by seismic isolation. Note that magnetic attraction is not performed on the steel rolling surface 1e. When the area of the non-magnetic retainer 5 is set to 2500 square centimeters, the rolling steel ball 2a and the steel rolling surface 1e form a magnetic path, and the upper magnetic pole rolling surface 1c passes through the rolling steel ball 2a.
In addition, the additional magnetic pole rolling surface 1f and the steel rolling surface 1e are magnetically attracted and connected to each other. The magnetic absorption rolling and seismic isolation.

In the above description, when the non-magnetic material rolling surface 1g is used instead of the steel rolling surface 1e to make the ferromagnetic material retainer 5 have an area of 2500 square centimeters, the rolling steel ball 2a The ferromagnetic retainer 5 serves as a magnetic path, and magnetically attracts the upper magnetic pole rolling surface 1c and the additional magnetic pole rolling surface 1f so as not to move slightly, and to perform magnetic adsorption seismic isolation rolling. When the area of the non-magnetic retainer 5 is set to 2500 square centimeters, the rolling steel balls 2a are individually magnetically attracted to the upper magnetic pole rolling surface 1c and the additional magnetic pole rolling surface 1f by magnetic induction to be slightly moved. No, and also magnetically seismically isolated.

When the rolling steel ball 2a is inserted into the cage 5 and interposed between the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d, the material of the cage 5 is ferromagnetic. Both magnetic and non-magnetic materials can be used, but the magnetic attraction effect is greater than when a ferromagnetic material is used. Ferromagnetic cage 5
Is used, a cage 5 using two thick plates is suitable to avoid magnetic saturation.

The upper magnetic pole rolling surface 1c of the rolling ball bearing device A
A detachable curtain (not shown) for waterproofing, dustproofing, and preventing rolling ball scattering is detachably screwed to the upper rolling surface 1a of the outer peripheral edge 10 and the entire outer peripheral edge of the additional magnetic pole rolling surface 1f. The lower end of the outer peripheral edge 10 of the lower magnetic pole rolling surface 1d
Alternatively, the extended magnetic pole rolling surface 1f can be used by hanging down to a position slightly beyond the entire outer peripheral edge thereof. The curtain is made of a material that can withstand long-term use.

The rolling ball bearing device A must be provided between the base 25 or the like of the article or structure and the base or ground 30 and endure long-term use. In particular, the yoke 27, the rolling steel ball 2a, the upper and lower rolling surfaces 1a and 1b, the steel rolling surface 1e, the retainer 5 made of a ferromagnetic material, and the like are subjected to sufficient rust preventive measures such as plating, dipping in zinc and painting. All parts made of steel must likewise be sufficiently resistant to corrosion. A thin 18-8 stainless steel plate (not shown) is attached and used on the upper and lower rolling surfaces 1c and 1d and the series of upper and lower rolling surfaces 1a and 1b. Thus, rust prevention and a series of flatness are obtained. The same rust prevention effect can be obtained by using the same for the steel rolling surface 1e.

The rolling ball bearing device A, which is freely interposed between the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d in which a large number of rolling steel balls 2a are vertically opposed, returns to its original position after the earthquake motion. Is not resilient. Therefore, when used for the seismic isolation device, a device (not shown) to be restored is required separately.
In addition, since the damping property of the horizontal ground motion is insufficient, it is necessary to use general-purpose equipment such as a horizontal spring (not shown). Further, a general-purpose damper device (not shown) for coping with a large horizontal displacement is also required.

FIG. 7 shows a rolling ball bearing device B according to the sixth aspect.
FIG. The pressure receiving surface 35 of the circular rolling base 6 is used as the magnetic pole pressure receiving surface 8, and the arc-shaped pressing surface 39 forming the outer peripheral edge of the circular rolling base 6 is further combined with the permanent magnet 26 or the permanent magnet 26.
And the yoke 27 are formed as the magnetic pole 3, and further, the inner surface of a predetermined width from the lower end of the outer peripheral edge 10 of the steel ball guide cover 23 is formed as the magnetic pole steel ball guide surface 38. In this example, the permanent magnet 26 and the yoke 2
7, the magnetic pole 3 is formed. The yoke 27 forming the magnetic pole pressure receiving surface 8 bears the vertical load to protect the permanent magnet 26, and the yoke 27 is provided between the contact surface of the circular rolling base 6 and the non-magnetic magnetic insulating plate 4. For example, a non-ferrous material having the same strength as that of 18-8 stainless steel or steel is interposed, and the other components are provided in the same manner as the above-described rolling ball bearing device A.

The inner surface from the lower end of the outer peripheral edge 10 of the steel ball guide cover 23 to a predetermined height is circular when the rolling steel ball 2a completes the seismic isolation rolling between the magnetic pole pressure receiving surface 8 and the lower rolling surface 1b. The height is approximately equal to the position of reaching the inside of the steel ball return surface 36 past the arc-shaped pressing surface 39 forming the outer peripheral edge of the rolling base 6. The yoke 27 of the permanent magnet 26 which is provided on the entire circumference of the arc-shaped pressing surface 39 and the inner surface of the outer peripheral edge 10 of the steel ball guide cover 23 to form the magnetic pole 3 does not bear a vertical load.

Steel ball return surface 3 on the upper surface side of circular rolling table 6
The distance between the steel ball guide cover 23 and the steel ball guide cover 23 is configured as a steel ball circulation path 37 slightly larger than the diameter of the rolling steel ball 2a, so that the rolling steel ball 2a circulating on the steel ball return surface 36 is formed.
Does not receive vertical load. Center point 0 of steel ball return surface 36
The vertical load supporting column 40 bears the vertical load and is supported on the lower rolling surface 1b via the circular rolling base 6 and the rolling steel balls 2a. The vertical load supporting cylinders 40 can be dispersed and used in a plural number depending on the weight of the vertical load so that stable support can be obtained. The steel ball guide cover 23 is detachably screwed to the vertical load supporting cylinder 40.

At the time of a large displacement of the ground during a large earthquake motion, the rolling steel ball 2a magnetically rolls on the magnetic pole pressure receiving surface 8 regardless of whether the material of the lower rolling surface 1b is a non-magnetic material or a ferromagnetic material. Seismically isolated. Magnetic pressure receiving surface 8 and lower rolling surface 1 of circular rolling base 6
Even if it is separated from b, a large number of rolling steel balls 2a are in contact with each other to form a magnetic path, which is magnetically attracted to the magnetic pole pressure receiving surface 8 and does not scatter or separate. After recombining, both will continue to magnetically attract and roll and seismically isolate. After seismic isolation, magnetic pressure receiving surface 8
The rolling steel ball 2a that has left is pushed back by the magnetic attraction rolling force of the succeeding rolling steel ball 2a and rolls on the arc-shaped pressing surface 39 upward against the gravity.
And the magnetic attraction force of the magnetic steel ball guide surface 38 provided on the inner surface from the lower end of the outer peripheral edge 10 of the steel ball guide cover 23. 2
By the pushing action of the magnetic attraction rolling power of a, the steel ball is easily pushed up to the steel ball return surface 36 without receiving any circulation resistance. After being pushed by the subsequent rolling steel ball 2a and passing the center point 0 and entering the hemispherical descending surface of the steel ball return surface 36, its own weight and the weight of the subsequent rolling steel ball 2a are added, and the ball falls down and rolls again. Between the surface 1b and the magnetic pole pressure receiving surface 8 and the rolling steel ball 2
a follows the magnetic displacement of the ground following the large displacement of the ground in all directions, and circulates sequentially in the steel ball circulation path 37 with low circulation resistance.

Further, when the lower rolling surface 1b and the magnetic pole pressure receiving surface 8 are separated from each other, the rolling steel ball 2a existing on the inclined steel ball return surface 36 slips down due to its own weight. However, the rolling steel ball 2a, which is being magnetically attracted to the arc-shaped pressing surface 39 and the magnetic steel ball guiding surface 38, and the magnetic pole pressure receiving surface 8 try to fall from between the circular pressing surface 39 and the magnetic steel ball guiding surface 38. The falling of the steel ball 2a is prevented by the magnetic attraction blocking action with the rolling steel ball 2a during magnetic attraction, so that the rolling steel ball 2a is not scattered or separated.

As with the above-described rolling ball bearing device A, the rolling ball bearing device B requires a rust-proof treatment or the like that can withstand years of use, and is used in accordance with the rolling ball bearing device A. When used for seismic isolation, as described above, a separate device to be restored is required, and the damping property is insufficient. Therefore, it is necessary to use a general-purpose device such as a horizontal spring. Further, a general-purpose damper device for handling a large horizontal displacement is also required.

FIG. 8 (a) is a schematic vertical sectional view of a rolling ball bearing device C according to a seventh aspect of the present invention.
No rolling outside small ball at the position of the level hemisphere of the rolling large sphere 9 (horizontal hemisphere; the hemisphere is synonymous with the equator line) or slightly above the level line By providing the road surface line of the circumferential return road surface 20 of the rolling return path 17, the dish-shaped lower rolling surface 12 is horizontally displaced following the large horizontal displacement of the ground during a large earthquake motion, and is mounted on the center point 0. At the same time as the placed rolling large ball 9 rolls, the outer rolling small steel ball 13 in the outer rolling small ball receiving pressure rolling path 16 rotates under the hemisphere rolling surface 15 while rolling on the upper hemisphere of the rolling large ball 9. The outer rolling small steel ball 13 revolving on the surface and seismically isolated rolling, and having completed the seismic isolation rolling below the hemispherical rolling surface 15 is rolled outside by its own weight and rolling inside the small ball no-load rolling return path 17 And the rolling power of the rolling large ball 9 in the horizontal displacement direction is pushed by the outer rolling small steel ball 13 which sequentially falls. Outer rolling small balls unloaded rolling feedback path 1
7 is a non-load rolling on the circumferential return road surface 20, and the outside rolling small ball 13 in the outer rolling small ball receiving pressure rolling path 16 is outside of the place where the small steel ball 13 is in a position where it becomes a blank space due to seismic isolation rolling. The rolling power in the upward direction of the spherical surface due to the rolling movement of the rolling large ball 9 in the horizontal displacement direction and the position of the road surface line of the circumferential return road surface 20 from the rolling small ball entry guiding inclined surface 18 indicate the position of the rolling large ball 9. The outer rolling small steel ball 13 easily slides without slipping due to the inclination action of the outer rolling small ball approach guiding inclined surface 18 with the inclined surface of the spherical surface of the rolling large ball 9 due to being above the level hemispherical line,
Rolling again into the outer rolling small ball receiving pressure rolling path 16, the rolling large ball 9 follows the horizontal displacement in all directions until the end of the large seismic motion with little rotational friction, and performs the seismic isolation rolling, and the outer rolling small steel ball. 13
Can circulate with low circulating friction resistance.

The rolling large sphere 9 is restrained with little rotational friction by the rolling large sphere circumferential restraining cover ring 41 provided below the outer rolling small sphere circumferential return road surface ring 19, and the vertical load is borne and seismically isolated. Roll. Even if the rolling large ball 9 and the plate-shaped lower rolling surface 12 are temporarily separated due to a large displacement of the ground during a large earthquake motion, the rolling large ball 9 is rolled by the rolling large ball circumferentially restricted cover ring 41. The lower hemisphere part of the area near the level hemisphere line of the large sphere 9 is freely rotatable around the level circumference,
There is no danger of leaving.

The upper hemisphere and the hemisphere rolling surface 15 of the rolling large sphere 9
And a large number of outer rolling small steel balls 13 freely interposed so as to fill almost all of the inside of the outer rolling small ball pressure rolling path 16 and the outer rolling small ball no-load rolling return path 17.
Is prevented from falling outside by the outer rolling small ball no-load rolling return path 17 of the outer rolling small ball circumferential return road ring 19. The outer rolling small ball circumferential return road surface ring 19 is rigidly screwed to the lower end of the outer peripheral edge 10 of the hemispherical rolling surface 15 and supports the entire weight of the plurality of outer rolling small steel balls 13.

FIG. 8B is a schematic enlarged longitudinal sectional view of a partial cross section and a partial cutaway for explaining the outer rolling small ball magnetic attraction introducing surface 21 of the rolling ball bearing device C according to the eighth aspect. . The entire level circumference of the outer rolling small ball approach guiding inclined surface 18 and a part of the upper hemispherical rolling surface (15) connected to the outer rolling small ball entering guide inclined surface 18 (the part is the ball diameter of the outer rolling small steel ball 13) Permanent magnet 26 indicates the range of the circumference of all levels at a height of the same size as
Alternatively, by forming the outer rolling small ball magnetic attraction introduction surface 21 as the magnetic pole 3 by the permanent magnet 26 and the yoke 27, the outer rolling small ball no-load rolling feedback at the time of large horizontal displacement of the ground during a large earthquake motion. The outer rolling small ball which passes through the path 17 and is rolled into the outer rolling small ball receiving pressure rolling path 16 by the horizontal displacement rolling force of the rolling large ball 9 and becomes a blank, and the outer rolling small ball from the magnetic attraction introduction surface 21 is removed. The outer rolling small steel ball 13 that is about to roll into the pressure receiving rolling path 16 is composed of an outer rolling small ball 13 that rises in the direction of the outer rolling small ball receiving rolling path 16 due to the horizontal displacement rolling force of the rolling large ball 9, The position of the circumferential return road surface 20 of the rolling small ball no-load rolling return path 17 is positioned on the upper hemisphere side of the rolling large ball 9, and the inclination of the upper hemisphere causes the magnetic pole 3 to further move. Magnetism of the rolling surface 21 of the outer rolling small ball Due to the attraction force, it is sucked up and magnetically attracted to the outer rolling small ball magnetic attraction introduction surface 21, and the outer rolling small steel ball 13 rolls into the outer rolling small ball receiving pressure rolling path 16 without sliding more easily. I can do it. still,
The permanent magnet 26 or the magnetic pole 3 formed by the permanent magnet 26 and the yoke 27 forms the outer rolling small ball magnetic attraction introduction surface 21,
In this example, the magnetic pole 3 is formed by the permanent magnet 26 and the yoke 27 as described above. However, the outer rolling small ball magnetic adsorption introduction surface 21
Does not bear the vertical load.

The ball diameters of the rolling large ball 9 and the outer rolling small steel ball 13 are arbitrary. However, the smaller the ball diameter of the number of the outer rolling small steel balls 13, the more the vertical load is dispersed. Can bear. If the ball diameter of the outer rolling small steel ball 13 is too large, the weight increases, and the outer rolling small ball entering guide slope 18
When rolling into the outside rolling ball receiving rolling path 16 from outside, the circulation resistance increases. In addition, when magnetically attracted to the outer rolling small ball magnetic attraction introduction surface 21 and rolls into the outer rolling small ball pressure rolling path 16, the magnetic attraction force decreases. When a small steel ball for general use is used for the outer rolling small steel ball 13 in terms of economy or the like, the rolling large ball 9 having an appropriate ball diameter from the general-purpose ball diameter is used.
Is obtained. The diameter of both spheres is also determined from the weight of the upper structure. In either case, a large number of outer rolling small steel balls 13 can easily roll between the rolling large ball 9 surface and the hemispherical rolling surface 15 with little resistance and bear a vertical load. And the ball diameter of the outer rolling small steel ball 13.

The upper hemispherical rolling surface plate 14 is provided on the base 25 of the article or structure, and the dish-shaped lower rolling surface 12 is provided on the base or ground 30.
To bear the vertical load, the plate-shaped lower rolling surface 12 and the rolling large ball 9, the outer rolling small steel ball 13 and the semi-spherical rolling surface 15, the upper semi-spherical rolling surface plate 14, etc. Optimally, the material is made of steel. As with the above-described rolling ball bearing devices A and B, anti-rust treatment or the like that can withstand years of use is required.
When used for seismic isolation, the damping properties are insufficient as described above, so it is necessary to use a general-purpose device such as a horizontal spring. Further, a general-purpose damper device for handling a large horizontal displacement is also required. Except for the outer rolling small steel balls 13, they may be formed of a non-ferrous material having a strength equivalent to steel that can withstand years of use. It is also possible to use the upper hemispherical rolling surface plate 14 on the base or ground 30 and the dish-shaped lower rolling surface 12 on the base 25 of an article or structure by screwing it upside down.

FIG. 9 shows a rolling ball bearing device D according to a ninth embodiment.
FIG. The entire outer spherical surface of the single center rotation large ball 22 is inserted into the retainer 5 so as to rotatably fit the plurality of outer revolving small balls 42 so as not to fall off at equal intervals, and is included together with the retainer 5, and the outer revolve. The rolling small ball 42 is rotatably and closely contacted with the entire outer spherical surface of the center rotating large ball 22 so as to form a rotation revolving compound rolling ball 43, and the dish-shaped lower rolling surface 1 is formed.
2 is placed on the center point 0, and the rotation and revolution compound rolling ball 43
The outer hemisphere rolling surface 15 of the upper hemisphere rolling surface plate 14 screwed to the base 25 of the article or the structure is placed on the outer orbiting rolling sphere 42 on the upper hemisphere of the center rotating large sphere 22. When placed in even contact, outer revolving small ball pressure passages 24 are formed between them.

At the time of large displacement of the ground during a large earthquake motion, the outer revolving small rolling ball 42 of the self-revolving compound rolling ball 43 fitted into the retainer 5 follows the horizontal displacement of the dish-shaped lower rolling surface 12. However, while revolving, the outer spherical surface of the centrally-rotating large ball 22 revolves, and the centrally-rotating large ball 22 revolves, and at the same time, the outer orbital rolling which is fitted into the retainer 5 in the outer ball rolling pressure receiving path 24. The rolling small ball 42 rolls on the hemispherical rolling surface 15 while bearing and transmitting a vertical load, and at the same time, revolves on the upper hemispheric surface of the centrally rotating large ball 22 to horizontally move in all directions. Following large displacement, it rolls with less rolling friction and seismically isolates.

A rotation-revolving compound rolling ball restraining ring 44 screwed to the lower end edge of the outer peripheral edge 10 of the hemispherical rolling surface 15 is engaged with the outer revolving ring fitted into the retainer 5 of the rotation-revolving compound rolling ball 43. Because the lower hemispherical area of the area near the level hemispherical line of the center rotation large ball 22 including the rolling small ball 42 is constrained to be rotatable over the level circumference, in the event of a large displacement of the ground during a large earthquake motion , Rotating and revolving compound rolling ball 43 and dish-shaped lower rolling surface 12
Is temporarily separated, the rotation and revolving compound rolling ball 43 is rotatably restrained.
No. 2 bears vertical load with low rotational friction and rolls without seismic isolation.

The material of the retainer 5 that includes the entire outer spherical surface of the centrally rotating large sphere 22 so as to rotatably fit the plurality of outer orbiting small spheres 42 so as not to fall off at equal intervals may be a non-magnetic material. It may be a ferromagnetic material. Although the retainer 5 does not directly bear the vertical load, the outer revolving small ball 42 fitted so as to freely roll and not fall off is formed by the center rotation large ball 2.
In the case of a large displacement of the ground during a large earthquake motion, the entire outer spherical surface of (2) can follow the horizontal displacement of the dish-shaped lower rolling face 12 while bearing a vertical load and roll on the dish-shaped lower rolling face 12. It is necessary to use a material having a thickness and strength that allows the material to be used. For example, steel, 18-8 stainless steel, a synthetic resin of a material similar to steel, or the like is used.

Although any spherical diameter can be used as the spherical diameter of the central rotation large ball 22, the outer orbital rolling small ball 42 can be used.
If the ball diameter is too large, the spacing between the rolling small balls 42 must be widened, and the contact surface between the dish-shaped lower rolling surface 12 and the outer revolving rolling small balls 42 decreases, and the following rolling becomes smooth. May not be possible. Therefore, when a large number of the outer revolving small balls 42 having an appropriate small ball diameter are used, the vertical load is dispersed and loaded, and the rolling can be easily performed.

In order to form the cage 5 having a thick spherical shell shape, the spherical shell shape is divided into two or more, and the shape is appropriately divided and provided. It is provided according to the same specifications as the retainer 5 used by combining two plates. still,
The retainer 5 can be manufactured and used in any manner, and the outer revolving small balls 42 are arranged at equal intervals on the spherical shell surface. With the cage 5 provided separately, the central rotation rotating large sphere 22 is included therein and united to form a spherical shell shape,
The outer revolving small ball 42 and the central self-rotating large ball 22 are rotatable, and are connected to each other using an appropriate connection method such as welding, screwing, or bonding.

As described above, one center-rotating large ball 22 and a plurality of outer revolving small balls 42 bear a vertical load. Therefore, the material is suitably formed of steel or 18-8 stainless steel. When steel is used, it is necessary to provide a rust preventive treatment or the like that can withstand years of use, as in the case of the above-mentioned rolling ball bearing device A, B or C, and is used in accordance with the above. Similarly, general-purpose devices such as horizontal springs need to be used for seismic isolation because the damping property is also insufficient. Further, a general-purpose damper device for handling a large horizontal displacement is also required. It may be made of a non-ferrous material having a strength equivalent to steel that can withstand years of use. It is also possible to use the upper hemispherical rolling surface plate 14 on the base or the ground 30 and the lower 25 moving surface 12 on the base 25 of an article or a structure by screwing it upside down.

FIG. 10 is a longitudinal sectional view of a rolling ball bearing device C according to the tenth aspect. The upper vertical load support surface 11a and the lower vertical load support surface 11b are opposed to the outer peripheral edge 10 of both the dish-shaped lower rolling surface 12 and the upper hemispherical rolling surface plate 14.
Are formed and the upper vertical load supporting board surface 11a is placed on the lower vertical load supporting board surface 11b, so that the lower vertical load supporting board surface 11b bears the vertical load. 9 lower end and plate-shaped lower rolling surface 1
By providing a slight gap 45 between the rolling balls 2, the rolling large ball 9 does not bear the vertical load. Therefore, the rolling large ball 9 is released from supporting the vertical load at one point in normal times. In addition, the lower vertical load supporting board surface 11b stably bears the vertical load, so that the fine vertical movement is also prevented.

In the case of a large horizontal displacement of the ground during a large earthquake motion,
When the dish-shaped lower rolling surface 12 is slightly displaced horizontally, the lower end of the rolling large ball 9 or the rotation revolving compound rolling ball 43 comes into contact with the dish-shaped lower rolling surface 12 to eliminate a slight gap 45, thereby reducing the vertical load. At the same time, the rolling large ball 9 rolls on the plate-shaped lower rolling surface 12 to isolate the base, and at the same time, separates between the upper vertical load supporting surface 11a and the lower vertical load supporting surface 11b, thereby releasing the load of the vertical load. Is done.

At the end of the large earthquake motion, the rolling large sphere 9 returns to its original position with a restoring property due to the inclination of the rolling surface of the plate-shaped lower rolling surface 12, and at the same time, the lower end of the rolling large sphere 9 and the dish-shaped A small gap 45 is formed between the lower rolling surface 12 and the vertical load supporting plate surface 11a rides on the lower vertical load supporting plate surface 11b at the same time as being released from the burden of the vertical load, thereby stabilizing the vertical load. It returns to the burdened state and transmits the vertical load to the base or ground 30. Fine movement is also prevented.

In the rolling ball bearing device D according to the tenth aspect, similarly to the rolling ball bearing device C according to the tenth aspect, the upper vertical load supporting board surface 11 is opposed to the same position.
The same effect can be obtained by forming and providing the lower vertical load supporting board surface 11b.

[0084]

In the rolling ball bearing device A according to any one of claims 1 to 5, a large number of rolling steel balls are magnetically attracted to each other by using the upper and lower rolling surfaces as the magnetic poles of the permanent magnets. Are magnetically attracted and connected, and slight movement is prevented.
Further, at the time of a large horizontal displacement during an earthquake motion, the rolling steel ball 2a is seismically isolated and rolled in a magnetically attracted state between the two, so that there is an effect that scattering and separation are prevented.

Instead of either the upper magnetic pole rolling surface 1c or the lower magnetic pole rolling surface 1d facing up and down, a steel rolling surface 1e is used.
Alternatively, a more economical rolling ball bearing device A can be obtained by facing the nonmagnetic material rolling surface 1g, and the rolling steel ball 2a can be obtained.
Is magnetically attracted to one of the upper magnetic pole rolling surface 1c and the lower magnetic pole rolling surface 1d to prevent micromotion, and when a large horizontal displacement occurs during an earthquake motion, the rolling steel ball 2a is moved to the upper magnetic pole rolling surface 1c or the lower magnetic pole. Since one of the rolling surfaces 1d performs seismic isolation rolling in a magnetically attracted state, there is an effect of preventing scattering and separation.

By using the rolling steel balls 2a inserted into the retainer 5 made of a ferromagnetic material or a non-magnetic material, the vertical load can be stably supported by using a smaller number of the rolling steel balls 2a. Scattering and separation of the spheres 2a are further prevented. When the ferromagnetic cage 5 is used, the cage 5 serves as a magnetic path. When the non-magnetic cage 5 is used, the cage 5 is provided with a magnetic insulation between a plurality of rolling steel balls 2a. Therefore, the rolling steel ball 2a can be more economically prevented from scattering and separating.

In the rolling ball bearing device B according to the sixth aspect, the magnetic pole pressure receiving surface 8 and the arc-shaped pressing surface 39 are further formed by forming the magnetic pole steel ball guide surface 38 as the magnetic pole 3, so that a large earthquake motion can be achieved. Steel ball 2 when a large displacement of the ground
a is magnetically adsorbed and tumbled, and does not scatter or depart. Even if the lower rolling surface 1b and the magnetic pole pressure receiving surface 8 are separated from each other, the many rolling steel balls 2a are magnetically attracted to the magnetic pole pressure receiving surface 8 and do not scatter or separate.
Further, the rolling steel ball 2a rolls up to circulate on the arc-shaped pressing surface 39 against the gravity.
And the magnetic attraction force of the magnetic steel ball guide surface 38 and the magnetic attraction rolling power of the rolling steel ball 2a during the magnetic attraction rolling of the magnetic pole pressure receiving surface 8 by the synergistic action of the rolling steel ball 2a. The steel ball is easily pushed up by the hemispherical steel ball return surface 36 in a small amount. Further, when the rolling steel ball 2a circulating on the steel ball return surface 36 is separated from the lower rolling surface 1b and the magnetic pole pressure receiving surface 8, there is an effect of blocking the backflow and falling by the magnetic attraction action.

In the rolling ball bearing device C using a single rolling ball restrained from coming off, the outer rolling small ball pressure rolling path 16 can be used when the ground is largely displaced during a large earthquake motion. From the inside, it falls into the outside rolling ball no-load rolling return path 17, and further rolls on the road surface of the circumferential return road surface 20 without load, so that the outside rolling small ball approach guide slope 18
The rolling frictional resistance can be easily rolled into the outside rolling ball receiving pressure rolling path 16 from the outside. At the same time, the rolling ball 9 has an effect that the rotational friction resistance is as small as possible and the vertical load can be applied to bear the vertical load.

The outer rolling small steel balls 13 can circulate with less circulating frictional resistance because the outer rolling small steel balls 13 serve as a circulating return path for the outer rolling small steel balls 13 without load.
7 is provided at the position of the level line slightly above the level hemisphere line of the rolling large ball 9 or higher. As a result, the outer rolling small steel ball 1 that has completed the seismic isolation rolling
3, there is no need to recirculate upwards against gravity, and the frictional resistance required for recirculation is significantly reduced. Therefore, in the conventional rolling ball bearing device using one rolling large ball, Of the rolling small steel ball used to reduce the frictional resistance between
The problem relating to the magnitude of the circulating frictional resistance is improved, and the conventional problem of the rolling ball bearing device using one rolling ball can be solved.

In the rolling ball bearing device C according to the eighth aspect, the entire level circumference of the outer rolling small ball approach guiding inclined surface 18 and a part of the upper hemispherical rolling surface (15) connected thereto is defined as: By providing the outer rolling small ball magnetic attraction introducing rolling surface 21 as the outer rolling small ball, the outer rolling small steel ball 13 returning from the outer rolling small ball no-load rolling return path 17 is provided with the outer rolling small ball magnetic attraction introducing rolling. The outer rolling small steel ball 13 is sucked up by the magnetic attraction force of the surface 21, magnetically attracted to the outer rolling small ball magnetic attraction introducing surface 21, and the outer rolling small steel ball 13 does not slip by the rolling power and the tilting action of the rolling large ball 9 in the ascending direction. Rolling into the outer rolling small ball receiving pressure rolling path 16 more easily and rolling seismic isolation, and simultaneously rolling the large ball 9 has as little rotational frictional resistance as possible and bears vertical load, so that the effect of being able to bear vertical load is obtained. is there.

As described above, by utilizing the magnetic attraction force of the permanent magnet which does not require an energy source, the scattering and separation of the rolling steel ball out of the vertical rolling surface cannot be solved by mechanical means. The economic effect of solving the problems of the prior art is great.

In the rolling ball bearing device D according to the ninth aspect, the outer revolving rolling globules 42 used for reducing the rotational friction between the single central rotating large ball 22 and the hemispheric rolling surface 15 are provided with: By forming the integral revolving and revolving compound rolling ball 43, the outer revolving rolling ball 42 fitted in the retainer 5 is not scattered or detached, and the frictional resistance of both is remarkably small, and the seismically isolated rolling can be achieved. There is.

In the rolling ball bearing device C or D according to the tenth, eighth, or ninth aspect, in the rolling ball bearing device using a single ball, one rolling ball always applies a vertical load. Because it is a burden and is supported by the local part of the lower rolling surface, multiple rolling ball bearings using monosphere rolling balls are used to deal with it, but it is difficult to predict when it will occur An upper portion provided opposite to the outer peripheral edge 10 of both the dish-shaped lower rolling surface 12 and the upper semi-spherical rolling surface plate 14 without always applying a vertical load to one rolling ball in preparation for the occasion. By applying a vertical load to the vertical load supporting board surface 11a and the lower vertical load supporting board surface 11b, one rolling ball is released from a normal load burden, local support becomes distributed support, fine movement is prevented, and the upper structure is prevented. Has a stable effect.

[Brief description of the drawings]

FIG. 1A is a longitudinal sectional view of a rolling ball bearing device A according to a second embodiment. FIG. 2B is a partially enlarged longitudinal sectional view of FIG.

FIG. 2 is a plan view showing an area of a predetermined range of a lower magnetic pole rolling surface 1d.

FIG. 3 is a longitudinal sectional view showing a state in which the rolling ball bearing device A according to claim 2 has been horizontally displaced relative to each other.

FIG. 4 (a) is a rolling ball bearing device A according to claim 3.
3 is a longitudinal sectional view showing a state of horizontal relative displacement.
FIG. 4B is a longitudinal sectional view showing a state in which an additional magnetic pole rolling surface 1f is connected in series in place of the upper rolling surface 1a in FIG.

FIG. 5A is a schematic perspective explanatory view of a partially cut-away view showing a state in which a rolling steel ball 2a is fitted into a retainer 5 using two thin plates. FIG. 5B is a cross-sectional view taken along a line AA in FIG. (C) is a vertical cross-sectional view of a partially cutout of the retainer 5 in which the rolling steel balls 2a are fitted between two thick plates.

FIG. 6 (a) is a rolling ball bearing device A according to claim 3, wherein a rolling steel ball 2a is fitted into a retainer 5 made of a ferromagnetic material having the same area as the upper magnetic pole rolling surface 1c. FIG. 4 is a longitudinal sectional view showing a state where horizontal relative displacement has occurred. (B) is FIG.
FIG. 5A is a longitudinal sectional view showing a state in which a rolling steel ball 2a is fitted into a retainer 5 made of a nonmagnetic material having the same area as the upper magnetic pole rolling surface 1c, and is horizontally displaced relatively.

FIG. 7 is a longitudinal sectional view of a rolling ball bearing device B according to claim 6;

FIG. 8 (a) is a rolling ball bearing device C according to claim 7.
3 is a schematic vertical sectional view of a partial cross section and a partial cutaway of FIG. (B)
FIG. 10 is a schematic enlarged vertical sectional view of a partial cross section and a partial cutaway for explaining an outer rolling small ball magnetic attraction introduction surface 21 of the rolling ball bearing device C according to claim 8.

FIG. 9 is a longitudinal sectional view of a rolling ball bearing device D according to claim 9;

FIG. 10 is a longitudinal sectional view of a rolling ball bearing device C according to claim 10; The dashed-dotted line in the figure indicates a circle having a radius dimension of the planned horizontal relative displacement amplitude, the solid arrow indicates the traveling direction and the rotation direction, the two-dot dashed arrow indicates the horizontal displacement direction, and the dashed line indicates the magnetic force line, XX and YY indicate directions.

[Explanation of symbols]

 A Rolling ball bearing device B Rolling ball bearing device C Rolling ball bearing device D Rolling ball bearing device N N magnetic pole S S magnetic pole 0 Center point 1a Upper rolling surface 1b Lower rolling surface 1c Upper magnetic pole rolling surface 1d Lower magnetic pole rolling Surface 1e Steel rolling surface 1f Additional magnetic pole rolling surface 1g Non-magnetic material rolling surface 2a Rolling steel ball 3 Magnetic pole 4 Magnetic insulating plate 5 Cage 6 Circular rolling base 8 Magnetic pole pressure receiving surface 9 Rolling large ball 10 Outer edge 11a Upper vertical load supporting board surface 11b Lower vertical load supporting board surface 12 Bowl-shaped lower rolling surface 13 Outside rolling small steel balls 14 Upper hemispheric rolling surface plate 15 Hemisphere rolling surface 16 Outside rolling small ball receiving pressure rolling path 17 Outside rolling small ball No-load rolling return path 18 Outside rolling small ball approach guide inclined plane 19 Outside rolling small ball circumferential return road surface ring 20 Circumferential return road surface 21 Outside rolling small ball magnetic adsorption introduction surface 22 Center rotation large ball 23 Steel ball draft Cover 24 Outer orbit rolling small ball pressure passage 25 Base of article or structure 26 Permanent magnet 27 Yoke 28 Upper support plate 29 Lower support plate 30 Base or ground 31 Non-magnetic material between magnetic poles 33 18-8 stainless steel screw 34 Fitting Hole 35 Pressure receiving surface 36 Steel ball return surface 37 Steel ball circulation path 38 Magnetic pole steel ball guide surface 39 Circular pressing surface 40 Vertical load supporting cylinder 41 Rolling large spherical circumferentially-restricted cover ring 42 Outer orbit rolling small ball 43 Combination of rotation and revolving Rolling ball 44

Claims (10)

[Claims] In a rolling ball bearing device having a rolling steel ball (2a) interposed between an upper rolling surface (1a) and a lower rolling surface (1b) opposed to each other vertically, The moving surface (1a) and the lower rolling surface (1b) are formed as the magnetic poles (3) of the permanent magnet (26), and the upper magnetic pole rolling surface (1c) and the lower magnetic pole rolling surface (1) are formed.
d) is formed, and the rolling steel ball (2a) is interposed between the upper magnetic pole rolling surface (1c) and the lower magnetic pole rolling surface (1d) opposed to each other. Rolling ball bearing device A. 2. A permanent magnet (26) or a permanent magnet having an area having a predetermined dimension from a center point (0) of both an upper rolling surface (1a) and a lower rolling surface (1b) opposed to each other up and down. (2
6) and a yoke (27) to form an upper magnetic pole rolling surface (1c) and a lower magnetic pole rolling surface (1d) formed as magnetic poles (3), and a number of rolling steel balls (2a) are interposed between them. The rolling ball bearing device A according to claim 1, wherein the rolling ball bearing device A is freely interposed. 3. The upper magnetic pole rolling surface (1c) opposed to the upper and lower sides.
3. A rolling ball bearing device A according to claim 2, wherein said lower magnetic pole rolling surface is replaced by a steel rolling surface made of steel instead of one of said lower magnetic pole rolling surfaces. . 4. The upper magnetic pole rolling surface (1c) opposed to the upper and lower sides.
The rolling according to claim 2, characterized in that a non-magnetic material rolling surface (1g) formed of a non-magnetic material is used instead of one of the lower magnetic pole rolling surfaces (1d). Ball bearing device A. 5. A ferromagnetic material having a predetermined size, wherein a number of rolling steel balls (2a) are matched with the magnetic pole interval between the upper magnetic pole rolling surface (1c) and the lower magnetic pole rolling surface (1d). 5. The rolling ball bearing device A according to claim 2, wherein the rolling ball bearing device A is configured to be fitted into a cage made of a non-magnetic material. 6. A lower rolling surface (1b) and a circular rolling platform (6).
And between the steel ball return surface (36) of the circular rolling base (6) and the steel ball guide cover (23). ) Are freely interposed and a rolling ball bearing device configured as a steel ball circulation path (37) for rolling steel balls (2a) between the rolling ball bearings is provided with a pressure receiving surface (35).
And an arc-shaped pressing surface (3
9) as a magnetic pole (3) with a permanent magnet (26) or a permanent magnet (26) and a yoke (27) to form a magnetic pole pressure receiving surface (8), and further a steel ball guide cover (23). The rolling ball bearing device B characterized in that the inner surface from the lower end of the outer peripheral edge (10) to a predetermined height is formed as a pole steel ball guide surface (38). 7. A rolling ball (9) is placed at a center point (0) of a plate-shaped lower rolling surface (12), and an upper hemisphere and an upper hemisphere rolling surface of the rolling large ball (9). Hemispherical rolling surface of board (14) (1
5), a number of outer rolling small steel balls (13) are freely interposed to form an outer rolling small ball pressure rolling path (16), and the outer rolling small ball circumferential return road ring (19) is formed. )), The position of the road surface line of the circumferential return road surface (20) is
Above the level hemisphere of the rolling large sphere (9). Provided, a plurality of outer rolling small steel balls (13) on a circumferential return road surface (20).
The outer hemisphere rolling surface (15) side where the placed outer rolling small steel ball (13) is in contact with is expanded to a width slightly larger than the ball diameter of the outer rolling small steel ball (13). A rolling small ball no-load rolling return path (17) is formed, and an outer rolling small ball entry guiding slope is formed as an inclined surface so that the expanded hemispheric rolling surface (15) is attached to the outer rolling small steel ball (13). (18), and an outer rolling small ball circumferential return surface ring (19) is screwed to the lower end of the outer peripheral edge (10) of the hemispherical rolling surface (15) to provide a rolling large ball circumferential restraining cover. A ring (41) is provided below the outer rolling small ball circumferential return surface ring (19) close to the entire circumference of the lower hemisphere at a position near the level hemisphere line of the rolling large ball (9) to provide a large rolling. A spherical circumference restricting cover ring (41) screwed to the lower end of the outer peripheral edge (10) of the hemispherical rolling surface (15). Rolling ball bearing apparatus C. to symptoms 8. An outer rolling small ball approach guide slope (18).
And the permanent magnet (26) or the permanent magnet (26) and the yoke (27) and the magnetic pole (3) with the entire level circumference of a part of the upper hemispherical rolling surface (15) connected thereto. The rolling ball bearing device (C) according to claim 7, characterized in that said rolling ball bearing device (C) is formed as an outer rolling small ball magnetic attraction introducing surface (21). 9. The entire outer spherical surface of a single centrally rotating large sphere (22) is mounted on a cage (5) by a plurality of outer orbiting rolling spheres (4).
2) are inserted at equal intervals and are included together with the retainer (5) to form a rotation revolving compound rolling ball (43), which revolves on the center point (0) of the dish-shaped lower rolling surface (12). Composite rolling ball (4
3) is mounted, and the rotation and orbital compound rolling ball (4) is further mounted.
The hemispherical rolling surface (15) of the upper hemispherical rolling surface plate (14) is evenly placed on the outer orbiting rolling small ball (42) located on the upper hemispherical surface of the center rotating large ball (22) of 3). To form an outer revolving small ball pressure passage (24), and a rotation-revolving compound rolling ball restraining ring () at the lower end of the outer peripheral edge (10) of the hemispherical rolling surface (15). 44) The rolling ball bearing device D, wherein the rolling ball bearing device D is provided. 10. An upper vertical load supporting plate surface (11a) and a lower vertical load opposed to outer peripheral edges (10) of both a dish-shaped lower rolling surface (12) and an upper hemispheric rolling surface plate (14). The upper vertical load support surface (11a) is placed on the lower vertical load support surface (11b), and the rolling large ball (9) or the revolving orbiting compound rolling ball (4) is formed on the lower vertical load support surface (11b).
The rolling ball bearing according to claim 7, 8 or 9, wherein a slight gap (45) is provided between the lower end of (3) and the dish-shaped lower rolling surface (12). Device C or D.