JP2018096500A - Support device and support system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support device capable of also corresponding to a high displacement while showing a non-linear characteristic.SOLUTION: A support device 1 has an upper shoe part 3, an intermediate shoe part 5 and a lower shoe part 7 and is displaced in at least one orientation in a horizontal direction and recovered. These shoes are kept under their overlapped state in a vertical direction, slide between the adjoining shoes and displaced in a horizontal direction. Each of the shoes comprise first magnet parts 11, 21 and 31, and non-magnetic bodies 13, 23 and 33 enclosing the side surface of the first magnet part, and the first magnet part of the lower shoe shows that its upper surface has a second polarity opposite to that of the first polarity if the lower surface of the first magnet part of the upper shoe is the first polarity. Both the lower surface of the first magnet part of the upper shoe and the upper surface of the first magnet part of the lower shoe have the same size to each other. The first magnet part is placed at an overlapped position under a neutral state and at least a part of it becomes an overlapped state even if it is kept under a state in which it is displaced to the maximum position.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bearing device and a bearing system, and more particularly to a bearing device that is displaced and restored in at least one horizontal direction.

  Inventor proposed the original vibration isolator which utilized the rolling element of the magnetic body in patent document 1. FIG. Patent Document 2 describes a general vibration damping device that uses simple attractive force and repulsive force by a plurality of magnets.

JP 2014-2222093 A Japanese Patent No. 3038347

  In the vibration damping device described in Patent Document 2, it is assumed that the restoring force changes almost linearly. On the other hand, the vibration isolator described in Patent Document 1 has nonlinear characteristics.

  However, the vibration isolator described in Patent Document 1 uses a rolling element of magnetic material. In principle, the retainer between the base plate and the slide plate uses one retainer, and it has been difficult to expand to a plurality of retainers. Therefore, it was difficult to cope with a large displacement.

  Accordingly, an object of the present invention is to propose a bearing device or the like that has practical characteristics and can cope with a large displacement.

  A first aspect of the present invention is a bearing device that is displaced and restored in at least one direction in a horizontal direction, and includes a plurality of flanges, and the plurality of flanges are in a state of being stacked in a vertical direction. Each of the flanges includes a first magnet part and a non-magnetic body part surrounding the side surface of the first magnet part, The lower surface of the first magnet portion of the flange portion has a first polarity, and the lower surface of the first magnet portion of the flange portion has an upper surface of the first polarity and a second polarity opposite to the first polarity. The lower surface of the first magnet portion of the flange portion and the upper surface of the first magnet portion of the lower flange portion are the same size and are in a position where they overlap when neutral, and at least partially even in a state of maximum displacement Are in a state of overlapping.

  A second aspect of the present invention is the support device according to the first aspect, wherein each of the flanges includes a second magnet part in addition to the first magnet part, and the second part of the upper flange part. The magnet portion has a lower surface having the second polarity, the second magnet portion of the lower flange portion has an upper surface having the first polarity, and the non-magnetic body portion has the first magnet portion and the A position that surrounds the side surface of the second magnet portion, and that the lower surface of the second magnet portion of the upper flange portion and the upper surface of the second magnet portion of the lower flange portion are the same size and overlap when neutral The upper surface of the first magnet part of the upper collar part and the upper surface of the second magnet part of the lower collar part are at a maximum. The upper surface of the first magnet part of the upper flange part and the lower surface of the upper magnet part do not overlap even in a displaced state. It is those which do not overlap each other in place the state.

  According to a third aspect of the present invention, there is provided a support device according to the second aspect, wherein the uppermost flange portion and the lowermost flange portion are provided with a magnetic body portion at an upper portion and a lower portion, respectively. Using the non-magnetic part, a magnetic circuit is formed by an upper magnetic part, the first magnet part, a lower magnetic part, and the second magnet part.

  A fourth aspect of the present invention is the support device according to any one of the first to third aspects, wherein the lower surface of the upper flange portion and the upper surface of the lower flange portion are respectively convex downward. And a concave shape on the upper side, or a concave shape on the lower side and a convex shape on the upper side, and the collar portion includes a first sliding portion in a part of the convex shape, and the collar portion is a depression in the concave shape. A second sliding part at the bottom of the upper part, and the convex or concave part of the lower surface of the upper collar part has a horizontal gap between the concave or convex part of the upper surface of the lower collar part By fitting, the maximum displacement length is limited, and the first sliding portion and the second sliding portion slide.

  According to a fifth aspect of the present invention, there is provided the supporting device according to any one of the first to fourth aspects, wherein when the concave shape is upward in the flange portion, the second sliding portion having the concave shape is slid. It holds the fluid.

  According to a sixth aspect of the present invention, there is provided a support device according to the fifth aspect, wherein the support device is on the lower surface of the upper flange portion and does not contact the second sliding portion of the lower flange portion, and the sliding device. A second indirect contact portion that contacts the fluid, or a second contact that is on the upper surface of the lower flange and does not contact the first sliding portion of the upper flange and contacts the sliding fluid An indirect contact portion is provided.

  According to a seventh aspect of the present invention, there is provided a support device according to any one of the first to sixth aspects, wherein the upper flange portion and the lower flange portion are separated by a force other than magnetic force in a state of being displaced at least to the maximum. It is provided with a restoring unit that generates a restoring force between them.

  An eighth aspect of the present invention is a support system in which the support devices according to any one of the first to seventh aspects are stacked in the vertical direction and the lower magnetic body and the upper magnetic body adjacent in the vertical direction are integrated. .

  According to each aspect of the present invention, by enclosing the side surface of the magnet portion with a non-magnetic body portion, it becomes possible to realize a practical restoring force characteristic, as will be specifically described in later experiments. . Furthermore, since it has a simple structure in which a plurality of collars slide relative to each other, it can be easily expanded to a large number of collars and can cope with large displacements.

  Furthermore, according to the 2nd viewpoint of this invention, it becomes possible to form a magnetic circuit with the 1st magnet part and 2nd magnet part of a collar part. In particular, as in the third aspect, a closed circuit is formed by providing magnetic parts on the upper and lower sides of the support device. Thereby, it is possible to realize a powerful restoring action and the like.

  Furthermore, according to the fourth aspect of the present invention, the lower surface of the upper collar is made convex or concave, and the upper surface of the lower collar is made concave or convex so that the adjacent collars are displaced. Can be restricted.

  Furthermore, as in the fifth aspect of the present invention, when the upper surface of the lower flange portion is concave upward, a liquid such as oil is held in the second sliding portion using the concave shape. Thus, sliding can be facilitated.

  According to the sixth aspect of the present invention, the sliding liquid or the upper side between the first indirect contact portion of the upper flange portion and the second sliding portion of the lower flange portion. Utilizing the viscosity of the sliding fluid between the first sliding part of the collar part and the second indirect contact part of the lower collar part, the upper collar part and the lower collar part It is possible to generate a viscous force as a vibration damping force according to the relative speed of the.

  Further, according to the seventh aspect of the present invention, the restoring force can be supplemented by the restoring portion where the restoring force by the magnet confirmed in the experiment decreases near the maximum displacement.

  Further, according to an eighth aspect of the present invention, a magnetic circuit formed by integrating the lower magnetic body and the upper magnetic body adjacent in the vertical direction into a state where the support apparatus is stacked in the vertical direction and formed inside the support apparatus. By shortening the magnetic path, the maximum displacement and restoring force can be increased.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows an example of the support apparatus 1 which concerns on embodiment of this invention, (a) The support apparatus 1, (b) The enlarged view of the right side part of (a), (c) Upper collar 3, (d) Middle It is a figure which shows an example of the eaves 5 and (e) the lower eaves 7. (F) And (g) is a top view at the time of neutrality and the maximum displacement of the support apparatus 1, respectively. (H) And (i) is an intermediate sectional view at the time of (e) and (f), respectively. It is a figure which shows the support apparatus which concerns on other embodiment of this invention, and is a figure which shows an example of (a) support apparatus, (b) upper collar, (c) lower collar. (D) And (e) is a top view at the time of neutrality and the maximum displacement of the support apparatus 1, respectively. (F) And (g) is an intermediate sectional view at the time of (d) and (e), respectively. The appearance of the prototype (a) as a whole, (b) the lower surface side of the upper collar, (c) the upper surface side of the middle collar, and (d) the upper surface side of the lower collar is shown. It is a figure which shows distribution of the magnetic flux density of (a) upper collar, (b) middle collar, and (c) lower collar of a prototype. (A) Example 1, (b) Example 2, (c) The figure which shows the operation condition of Example 1, and (d) The table which shows the comparison of the magnetic attraction force V of Example 1 and Example 2. is there. (A)-(c) is a graph which shows the hysteresis curve of the displacement of Example 1 and Example 2, and an apparent restoring force, (d) (e) shows the comparison of the seismic isolation characteristic by a numerical experiment. It is a graph. It is a figure which shows an example when the installation apparatus 1 of FIG. 1 is actually installed. The figure which shows the (a) top view and (b) intermediate sectional view at the time of neutrality of the support apparatus which concerns on other embodiment of this invention, and the (c) top view and (d) intermediate sectional view at the time of maximum displacement. It is. (E) And (f) is a figure which shows an example of distribution of the pole of the magnet of each cage. The figure which shows the (a) top view and (b) intermediate sectional view at the time of neutrality of the support apparatus which concerns on other embodiment of this invention, and the (c) top view and (d) intermediate sectional view at the time of maximum displacement. It is. The figure which shows the (a) top view and (b) intermediate sectional view at the time of neutrality of the support apparatus which concerns on other embodiment of this invention, and the (c) top view and (d) intermediate sectional view at the time of maximum displacement. It is. It is a conceptual diagram which shows an example of a magnetic circuit.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to these examples.

  In the support device according to the embodiment of the present invention, a plurality of hooks are stacked in the vertical direction, and slide between the hooks adjacent to each other to be displaced in the horizontal direction. The upper heel is called the upper heel, the lowest heel is called the lower heel, and the heel between the upper heel and the lower heel is called the intermediate heel.

  FIG. 1 is a diagram illustrating an example of a support device according to an embodiment of the present invention. In this example, there is one magnet in each cage and one intermediate cage. (A) shows the support device 1, (b) is an enlarged view of the right side part of (a). (C) shows an example of the upper rod 3, (d) shows an example of the intermediate rod 5, and (e) shows an example of the lower rod 7.

  Referring to FIG. 1A, the support device 1 includes an upper rod 3, an intermediate rod 5, and a lower rod 7.

  Referring to FIG. 1 (c), the upper collar 3 includes an upper magnet portion 11 (an example of the “first magnet portion” of the present invention) and an upper nonmagnetic body portion 13 (the “nonmagnetic body portion” of the present invention). ), An upper sliding portion 15 (an example of the “first sliding portion” of the present invention), and an upper magnetic body portion 17 (an example of the “magnetic body portion” of the present invention).

  The upper magnet unit 11 has a disc shape, and has, for example, an upper surface having a second polarity (for example, N pole) and a lower surface having a first polarity (for example, an S pole) opposite to the second polarity.

  The upper non-magnetic part 13 is made of, for example, an aluminum alloy and is a non-magnetic substance. The upper non-magnetic part 13 has a circular upper surface and surrounds the upper magnet part 11.

  The upper sliding portion 15 is, for example, a fluororesin sheet, is slippery, has a disk shape, and covers at least the lower portion of the upper nonmagnetic body portion 13. The upper sliding portion 15 may not cover the lower magnet portion 11.

  The upper magnetic body portion 17 is made of, for example, carbon steel and is a magnetic body, and has a circular upper surface so as to cover the upper magnet portion 11 and the upper nonmagnetic body portion 13.

  The lowermost surface 14 of the upper nonmagnetic portion 13 protrudes below the lower surface 16 of the upper magnetic portion 17. Further, the upper sliding portion 15 protrudes below the lowermost surface 14 (an example of the “first indirect contact portion” of the present invention) of the upper nonmagnetic body portion 13. The lower surface of the upper collar 3 has a downwardly convex shape, and the upper sliding portion 15 forms a part of the protruding portion of the convex shape.

  Referring to FIG. 1 (d), the intermediate collar 5 includes an intermediate magnet portion 21 (an example of a “first magnet portion” of the present invention) and an intermediate nonmagnetic body portion 23 (“nonmagnetic body portion” of the present invention). An intermediate lower sliding portion 25 (an example of the “first sliding portion” of the present invention) and an intermediate upper sliding portion 29 (an example of the “second sliding portion” of the present invention).

  The intermediate magnet unit 21 has a disc shape, and has, for example, an upper surface having a second polarity (for example, N pole) and a lower surface having a first polarity (for example, an S pole) opposite to the second polarity.

  The intermediate non-magnetic part 23 is, for example, an aluminum alloy and is a non-magnetic substance so as to surround the intermediate magnet part 21. The intermediate non-magnetic member 23 has a concave shape on the upper surface and a portion protruding downward on the lower surface.

  The middle lower sliding portion 25 is, for example, a fluororesin sheet, is slippery, has a disk shape, and covers at least the middle portion nonmagnetic material 23. The intermediate lower sliding portion 25 may not cover the lower portion of the intermediate magnet 21.

  The intermediate lower sliding portion 25 protrudes below the lowermost surface 24 of the intermediate nonmagnetic body portion 23 (an example of the “first indirect contact portion” of the present invention). The lower surface of the intermediate rod 5 has a downwardly convex shape, and the intermediate lower sliding portion 25 forms a part of the protruding portion of the convex shape.

  The middle upper sliding portion 29 is, for example, polished austenitic stainless steel, and is located at the bottom of the concave recess of the middle nonmagnetic body portion. The upper surface of the intermediate cage 5 is concave. The middle upper sliding portion 29 may not cover the middle magnet 21. And it is filled with the liquid (an example of "sliding liquid" of the claim of this application) which makes it slippery like silicone oil, for example.

  The anti-overflow material 22 is formed in the raised part of the concave shape. The overflow material 22 is made of, for example, nitrile rubber, and has a shape in which the lower part is larger than the upper part, and has a structure that is difficult to come out in a state where it is fitted in a raised part of a concave shape.

  Referring to FIG. 1 (e), the lower arm 7 includes a lower magnet portion 31 (an example of the “first magnet portion” of the present invention) and a lower nonmagnetic body portion 33 (the “nonmagnetic body portion” of the present invention). ), A lower magnetic part 37 (an example of the “magnetic part” of the present invention), and a lower sliding part 39 (an example of the “second sliding part” of the present invention).

  The lower magnet unit 31 has a disk shape, and has, for example, an upper surface having a second polarity (for example, N pole) and a lower surface having a first polarity (for example, S pole).

  The lower nonmagnetic part 33 is, for example, an aluminum alloy and is a nonmagnetic substance, and surrounds the lower magnet part 31. The lower nonmagnetic body portion 33 has a circular upper surface and lower surface.

  The lower magnetic part 37 is made of, for example, carbon steel and is a magnetic substance. The upper surface is concave, the lower surface is circular, and covers the lower magnet part 31 and the lower nonmagnetic part 33.

  The lower sliding portion 39 is, for example, polished austenitic stainless steel, and is on the lower nonmagnetic body portion 33. Therefore, the upper surface of the lower eyelid is concave. The lower sliding portion 39 may not cover the lower magnet portion 31. And it is filled with the liquid (an example of "sliding liquid" of the claim of this application) which makes it slippery like silicone oil, for example.

  Instead of making the upper surface of the lower magnetic body portion concave, the upper surface of the lower nonmagnetic body portion 33 may be concave, and the lower sliding portion 39 may be at the bottom of the concave recess of the lower nonmagnetic body portion 33. .

  The anti-overflow material 32 is formed in the raised part of the concave shape. The anti-overflow material 32 is made of, for example, nitrile rubber, and the lower portion is larger than the upper portion.

  Referring to FIG. 1 (b), the silicone oil contacts the lowermost surface 14 (an example of the “first indirect contact portion” of the present invention) of the upper nonmagnetic body portion 13, and the upper flange 3 and the intermediate flange 5 According to the relative speed (that is, according to the relative speed between the lowermost surface 14 and the middle upper sliding portion 29), the viscous force as the vibration damping force acts on the lowermost surface 14 and the middle upper sliding portion 29, respectively. Until the liquid level 18 of the silicone oil becomes higher than the lowermost surface 14, the silicone oil is preferably filled in the middle upper sliding portion 29.

  Similarly, the silicone oil comes into contact with the lowermost surface 24 (an example of the “first indirect contact portion” of the present invention) of the intermediate non-magnetic body portion 23 and depends on the relative speed of the intermediate rod 5 and the lower rod 7 (that is, The liquid level 28 of the silicone oil is the lowermost surface so that a viscous force as a vibration damping force acts on the lowermost surface 24 and the lower sliding portion 39, respectively (depending on the relative speed between the lowermost surface 24 and the lower sliding portion 39). Silicone oil is preferably filled in the lower sliding portion 39 until it becomes higher than 24.

  The magnitude of the viscous force as the vibration damping force is, for example, the respective areas of the lowermost surface 14 and the lowermost surface 24, the vertical distance between the lowermost surface 14 and the middle upper sliding portion 29, and the lowermost surface 24 and the lower sliding portion. It is possible to adjust by the vertical interval of 39 and the viscosity of the silicone oil.

  In order to generate or enhance the viscous force as the vibration damping force, portions corresponding to the lowermost surface 14 and the lowermost surface 24 may be provided at other portions of the upper nonmagnetic body portion 13 and the intermediate nonmagnetic body portion 23, respectively. Good. For example, the lower surface of the upper magnet portion 11 that is recessed above the lower surface of the upper sliding portion 15 and the lower surface of the intermediate magnet portion 21 that is recessed above the lower surface of the intermediate lower sliding portion 25 (each of the present invention An example of the “first indirect contact portion” may be brought into contact with silicone oil to generate a viscous force. The depressions that generate the viscous force are not limited to the lower surface of each magnet part, but, for example, depressions and grooves provided in the upper sliding part 15 and the intermediate lower sliding part 25 (an example of the “first indirect contact part” of the present invention) ).

  Further, for example, the upper surface of the intermediate magnet portion 21 that is recessed below the upper surface of the intermediate upper sliding portion 29 and the upper surface of the lower magnet portion 31 that is recessed below the upper surface of the lower sliding portion 39 (each of the present application An example of the “second indirect contact portion” of the invention may be brought into contact with silicone oil to generate a viscous force. The depressions that generate the viscous force are not limited to the upper surface of each magnet part, but, for example, depressions and grooves provided in the intermediate upper sliding part 29 and the lower sliding part 39 (an example of the “second indirect contact part” of the present invention) ).

  The material of the sliding portion and the combination of the materials are arbitrary, and the friction coefficient of the sliding portion may be adjusted using a solid lubricant such as graphite instead of a liquid such as silicone oil. Further, a material in which the sliding portion is impregnated with silicone oil or the like may be used. When the sliding portion is not filled with liquid, the ridges may be stacked vertically so that the convex shape of each ridge is vertically upward and the concave shape is vertically downward. Since the frictional force generated in the sliding part becomes one of the vibration damping elements of the bearing device, the sliding part material, so as to match the vibration damping performance of the bearing device where the friction coefficient of the sliding part is required, The combination of the surface properties of the sliding part, the sliding fluid, etc. should be adjusted accordingly.

  Further, the anti-flooding material 22 of the intermediate rod 5 and the anti-flooding material 32 of the lower rod 7 are respectively the lower surface 16 of the upper magnetic body portion 17 of the upper rod 3 and the lower surface 26 of the intermediate non-magnetic body portion 23 of the intermediate rod 5. Each anti-flooding material prevents the liquid in the concave shape from overflowing out of the concave shape before and after the convex shape and the concave shape come into contact with each other and slide. . Furthermore, each anti-flooding material prevents the entry of flames and dust into each sliding part.

  The upper non-magnetic body portion 13, the intermediate non-magnetic body portion 23 and the lower non-magnetic body portion 33 do not need to be formed of a single non-magnetic material. It may be formed of a plurality of nonmagnetic materials such as other resins or nonferrous metals.

  All or some of the forces acting on the upper magnetic body 17 and the lower magnetic body 37 (the “magnetic body portion” of the present invention) of the support device 1 are the upper non-magnetic body portion 13, the intermediate non-magnetic body portion 23, Adjacent to the sliding portions (the “first sliding portion” and the “second sliding portion” in the present invention) of each bag through the lower nonmagnetic body portion 33 (the “nonmagnetic body portion” in the present invention) It is transmitted to the niece.

  FIGS. 1 (f) and 1 (g) show a plan view when the bearing device 1 is neutral (ie, when no external force is applied) and when the displacement is maximum. FIGS. 1 (h) and (i) show intermediate cross-sectional views at (f) and (g), respectively.

  Referring to FIGS. 1F and 1H, the upper magnet portion 11, the intermediate magnet portion 21, and the lower magnet portion 31 have the same size and overlap when neutral.

  Referring to FIGS. 1 (g) and (i), when the external force H acts on the upper rod 3 and the lower rod 7, and the maximum displacement is obtained, the upper rod 3 and the intermediate rod 5 are moved. Displacement is limited by the upper convex shape and the lower concave shape, and the upper magnet portion 11, the intermediate magnet portion 21, and the lower magnet portion 31 partially overlap even at the maximum displacement. For this reason, at least a portion remains overlapped during the displacement. Let u be the displacement between the center of the upper magnet portion 11 of the upper collar 3 and the center of the lower magnet portion 31 of the lower collar 7.

  FIG. 2 is a diagram showing another example of the support device according to the embodiment of the present invention. In this example, there is one magnet in each cage, which is composed of an upper cage and a lower cage and has a simple structure. (A) is a support device, (b) is an upper collar, and (c) is an example of a lower collar. The configurations of (b) upper rod and (c) lower rod of FIG. 2 can be the same as (c) upper rod 3 and (e) lower rod 7 of FIG. 1, respectively.

  2 (d) and 2 (e) show plan views when the bearing device is neutral and when it is displaced maximum, respectively. 2 (f) and 2 (g) show intermediate cross-sectional views at (d) and (e), respectively. The bearing device of FIG. 2 has the same function as the bearing device 1 of FIG. However, the maximum displacement is shortened to 1/2.

  3 is a diagram showing the appearance of the prototype of the support device 1 of FIG. 1, (a) the overall appearance, (b) the appearance on the lower surface side of the upper collar, (c) the appearance on the upper surface side of the middle collar, And (d) shows the appearance of the upper surface side of the lower arm.

  FIG. 4 shows the magnetic flux density distribution of the prototype (a) upper rod, (b) middle rod, and (c) lower rod. The horizontal axis represents the distance from the center of the magnet part, and the vertical axis represents the magnetic flux density.

  In the experiment, in the case of a bearing device using an upper rod, an intermediate rod and a lower rod (FIG. 5 (a), Example 1), and in the case of a bearing device using only an upper rod and a lower rod (FIG. 5 (b)). Example 2) was compared. FIG.5 (c) shows the operating condition of a support apparatus. FIG. 5 (d) shows a comparison of the magnetic attractive force V between the bearing devices of Example 1 and Example 2. The magnetic attractive force is an average of three times. The magnetic attraction force of the support device of Example 2 was greater.

  FIG. 6A is a diagram comparing the hysteresis curves of the displacements of the bearing devices of the first and second embodiments and the apparent restoring force (including frictional force). (B) and (c) show the relationship between the displacement and restoring force of the bearing device of Example 1 and Example 2, respectively. (A) is an overlay of (b) and (c). The horizontal axis is the value obtained by dividing the displacement by the magnet diameter. The vertical axis shows the restoring force. The maximum restoring force of the bearing device of Example 1 was found that the variation occurred at about 50% of the magnet diameter, and the restoring force decreased as the variation increased. The maximum restoring force of the support device of Example 2 occurred when the variation occurred at about 30% of the magnet diameter, and the restoring force decreased when the variation was larger than that. The support device of Example 1 is capable of a displacement stroke that is about twice that of the support device of Example 2 by adopting an intermediate rod. It was also confirmed that non-linear restoring force characteristics were realized.

  FIG. 6 (d) shows the prediction of the maximum seismic response in a numerical experiment in the 2011 Tohoku-Pacific Ocean Earthquake (maximum acceleration 675 gal). The horizontal axis represents the viscous damping coefficient of the damper used in combination with the bearing device and laminated rubber bearing of the present invention, and the vertical axis represents the maximum acceleration. The displacement is the same between the laminated rubber bearing and the present invention, and the acceleration is a downwardly convex graph in the laminated rubber bearing, and monotonously increases in the present invention. FIG. 6 (e) shows the prediction of the maximum displacement response of long-period ground motion. The laminated rubber bearing has a larger maximum displacement than that of the present invention, and particularly has a larger maximum displacement in the long period region.

  FIGS. 6 (f) and 6 (g) show the displacement and apparent restoring force of Comparative Example 1 and Comparative Example 2 for explaining the effect of the nonmagnetic body portion in the bearing device of Example 1 and Example 2, respectively. It is a history curve.

  Comparative Example 1 is composed of an upper iron, an intermediate iron, and a lower iron, each of which is made of a brass nonmagnetic body portion surrounding the magnet side surface and a magnetic carbon steel or magnetic martens surrounding the nonmagnetic body side surface. Equipped with site-based stainless steel. The sliding portion is made of a fluororesin sheet, polished martensitic stainless steel, and fluorine grease.

  The experimental results of Example 1 will be described. The dimension of the neodymium magnet of the magnet part of Example 1 is 50 mm in outer diameter x 10 mm in thickness, and the maximum displacement of the adjacent flange part is 25 mm. The ratio between the maximum displacement rmax of the adjacent flanges and the magnet diameter D is rmax / D = 0.5. Since Example 1 is composed of an upper rod, an intermediate rod, and a lower rod, the maximum displacement umax of the support device is twice the maximum displacement rmax of the adjacent flange portion. Therefore, the maximum displacement is umax = 50 mm, and the ratio between the maximum displacement and the magnet diameter is umax / D = 1.0. The outer diameter of the nonmagnetic body portion surrounding the side surface of the magnet portion is 150 mm or more, and the length of the nonmagnetic body portion measured in the displacement direction from the side surface of the magnet portion is 75 mm or more. In other words, the non-magnetic part surrounds the side surface of the magnet part, exceeding the maximum displacement 25 mm of the adjacent collar part and the magnet diameter 50 mm.

  From FIG. 6 (b), the apparent restoring force (including frictional force) becomes maximum when the displacement / diameter is around 0.5, and the maximum restoring force is about 220N. When the displacement / diameter exceeds 0.5, the restoring force gradually decreases, and the restoring force at the maximum displacement is about 180N. The restoring force at the maximum displacement (umax / D = 1.0) is about 80% of the maximum horizontal force. The friction force is about 5N and the coefficient of friction is about 0.009.

  On the other hand, the dimensions of the neodymium magnet in the magnet part of Comparative Example 1 are an outer diameter of 80 mm and a thickness of 5 mm. There is no restriction on the displacement of the adjacent buttock. The diameter of the nonmagnetic body portion surrounding the side surface of the magnet portion is 100 mm, and the side surface of the nonmagnetic body portion is surrounded by magnetic carbon steel having a diameter of 280 mm. The length of the nonmagnetic body portion along the displacement direction from the side surface of the magnet portion is 10 mm, and the magnetic body is present outside the side surface of the nonmagnetic body portion.

  FIG. 6F shows the relationship between the apparent restoring force H and the displacement u. The restoring force is maximum at a displacement / diameter of about 0.18 and the maximum horizontal force is about 200N. As the displacement increases beyond 0.18, the restoring force decreases rapidly. The restoring force at rmax / D = 0.7 is about 100 N, and the horizontal force is about 50% of the maximum horizontal force. The displacement with the maximum restoring force / diameter = 0.18 is about 15 mm. In this state, the magnet part and the non-magnetic part that are adjacent to each other in the vertical direction partially overlap, and the magnet part and the magnetic substance do not overlap. When the displacement exceeds 20 mm, the adjacent magnet portions and the magnetic body overlap, and the restoring force decreases rapidly.

  The effect of the nonmagnetic part of Example 1 will be described using Comparative Example 1. In Example 1, since the magnet part and the non-magnetic body part adjacent to each other partially overlap at the time of deformation, the reduction in restoring force as shown in FIG.

  The experimental results of Example 2 will be described. Since the second embodiment is composed of the upper and lower collars of the first embodiment, the maximum displacement rmax of the adjacent collars and the maximum displacement umax of the support device are the same. Therefore, the maximum displacement is umax = 25 mm, and the ratio between the maximum displacement and the magnet diameter is umax / D = 0.5. The outer diameter of the nonmagnetic body portion surrounding the side surface of the magnet portion is 150 mm or more, and the length of the nonmagnetic body portion measured in the displacement direction from the side surface of the magnet portion is 75 mm or more. That is, the non-magnetic part surrounds the side surface of the magnet beyond the maximum displacement of 25 mm and the magnet diameter of 50 mm between the adjacent flanges.

  From FIG. 6 (c), the apparent restoring force becomes maximum when the displacement / diameter is around 0.4, and the maximum restoring force is about 200N. When the displacement / diameter exceeds 0.5, the restoring force gradually decreases, and the restoring force at the maximum displacement is slightly smaller than the maximum restoring force.

  On the other hand, the comparative example 2 is composed of the upper and lower eyelids of the comparative example 1. There is no limit to the displacement. The length of the nonmagnetic body portion along the displacement direction from the side surface of the magnet is 10 mm, and the magnetic body is present outside the nonmagnetic body portion.

  FIG. 6G shows the relationship between the apparent restoring force H and the displacement u. The restoring force is maximum at displacement / diameter = about 0.1, and the maximum restoring force is about 200N. As the displacement increases beyond 0.1, the restoring force decreases rapidly. The horizontal force at umax / D = 0.5 is about 100 N, and the restoring force at this time is about 50% of the maximum restoring force. The displacement when the restoring force is maximized is about 8 mm. In this state, the magnet part and the non-magnetic body part that are adjacent to each other in the vertical direction partially overlap, and the magnet part and the magnetic body do not overlap, but if the displacement exceeds 10 mm, Magnetic bodies overlap and the restoring force decreases rapidly.

  The effect of the nonmagnetic part of Example 2 will be described using Comparative Example 2. In Example 2, the magnet part of the adjacent flange part and the nonmagnetic body part partially overlap at the time of deformation, so that the reduction in restoring force accompanying the increase in displacement as shown in FIG. .

  By comparing the experimental results of Example 1 and Comparative Example 1 and Example 1 and Comparative Example 2, the non-magnetic body part surrounding the magnet part was extended beyond the maximum displacement in the displacement direction, and at the time of displacement If the adjacent magnets and the nonmagnetic part are partially overlapped, the restoring force at the maximum displacement can be about 80% of the maximum restoring force. If there is a magnetic body that partially overlaps with the adjacent magnet portion at the time of displacement, the restoring force decreases rapidly, so such a configuration is not practical from the viewpoint of restoring force.

  FIG. 7 is a diagram showing an example when actually installed. On both sides of the support device, a vertical tension member (an example of the “restoration part” of the present invention) is provided. The experiment of FIG. 6 revealed that the restoring force decreased after the maximum displacement. The decrease in restoring force can be compensated by the tensile material. Specifically, the horizontal component of the axial force of the tensile material compensates for the decrease in restoring force. Further, the side surface may be surrounded by a viscoelastic body. The reduction in restoring force may be compensated by using the force generated in the viscoelasticity surrounding the side surface. In this way, the reduction in restoring force can be compensated.

  FIG. 8 is a diagram showing another example of the support device according to the embodiment of the present invention. FIG. 8: shows the top view of the support apparatus at the time of (a) neutrality and (b) maximum displacement. (C) and (d) show intermediate sectional views of (a) and (b), respectively.

  With reference to FIG.8 (e) and (f), an example of arrangement | positioning of the pole of the magnet part arrange | positioned at each cage | basket is demonstrated. (E) and (f) show an example of arrangement | positioning of a pole when respectively seeing a cage | basket from the top and the bottom. There are nine magnet portions in each cage, and the nine magnet portions are arranged in a grid pattern in a plane. The magnet portions arranged in a lattice shape are not unified as N poles or S poles on the same surface. The magnet part is arranged so that the N pole and the S pole are adjacent to each other in a lattice shape. Thereby, a magnetic circuit to be described later is formed, and a desirable restoring force can be generated with a plurality of small magnet portions instead of a single large magnet.

  There is one intermediate cage. The configuration of the upper rod, the intermediate rod and the lower rod is the same as in FIG. 1, and the non-magnetic body portion surrounds the side surfaces of the plurality of magnet portions. As in FIG. 1, the adjacent ridges are fitted in a concave shape with a gap, and the displaceable distance is limited.

  Referring to FIGS. 8A and 8C, the upper, intermediate and lower magnet portions have the same size and overlap when neutral. With reference to FIGS. 8B and 8D, when an external force acts on the upper and lower eyelids to achieve the maximum displacement, the upper and intermediate eyelids are moving. Displacement is limited by the upper convex shape and the lower concave shape, and the magnet portion that overlaps at the middle position partially overlaps at the maximum displacement. On the other hand, the magnet portions that do not overlap at the middle position in each rod do not overlap even at the maximum displacement. Therefore, at the time of the displacement, at least a part of the magnet portion overlapping at the middle position remains overlapped until reaching the maximum displacement. On the other hand, magnet portions that do not overlap at the middle position do not overlap until the maximum displacement is reached.

  FIG. 9 is a diagram showing another example of the support device according to the embodiment of the present invention. In this example, as in the case of FIG. 8, each magnet has nine magnet portions, and is composed of an upper rod and a lower rod, and has a simple structure. The configurations of the upper and lower eyelids can be the same as the upper and lower eyelids of FIG. 8, respectively.

  FIGS. 9A and 9B show plan views of the bearing device when neutral and when the displacement is maximum. FIGS. 9C and 9D are intermediate sectional views at the time of (a) and (b), respectively. The support device of FIG. 9 has the same function as the support device of FIG. However, the maximum displacement is shortened to 1/2.

  FIG. 10 shows another example of the support device according to the embodiment of the present invention. In this example, there are a plurality of magnets on each ridge, a magnet arrangement that forms an equilateral triangle network when the centers of the magnets arranged on the ridge are connected, and a magnet arrangement that maximizes the number of magnets per unit area. There are multiple intermediate fences.

  In the upper collar, the intermediate collar, and the lower collar, as in the other embodiments, the non-magnetic body portion surrounds the side surfaces of the plurality of magnet portions. Adjacent ridges have a convex shape that is fitted in a concave shape with a gap, and the displaceable distance is limited.

  In order to protect the inside of the support device, the support device is surrounded by a viscoelastic body (an example of a “restoration unit” in the claims of the present application) so as to surround the side surface. The upper side of the viscoelasticity is fixed to the upper eyelid, and the lower side is fixed to the lower eyelid.

  FIG. 10: shows the top view of the support apparatus at the time of (a) neutrality and (b) the maximum displacement, (c) The intermediate sectional view at the time of neutrality and (d) the maximum displacement is shown. Referring to FIGS. 10 (a) and 10 (c), the upper, middle and lower magnet portions have the same size and overlap when neutral.

  Referring to FIGS. 10 (b) and 10 (d), when an external force acts on the upper and lower eyelids to achieve the maximum displacement, the upper and intermediate eyelids are moving. Displacement is limited by the upper convex shape and the lower concave shape, and the magnet portion that overlaps at the middle position partially overlaps at the maximum displacement. On the other hand, the magnet portions that do not overlap at the middle position in each rod do not overlap even at the maximum displacement. Therefore, at the time of the displacement, at least a part of the magnet portion overlapping at the middle position remains overlapped until reaching the maximum displacement. On the other hand, magnet portions that do not overlap at the middle position do not overlap until the maximum displacement is reached.

  At the time of deformation, the viscoelastic body becomes longer than that at the neutral position, and a tensile force acts on the upper and lower eyelids in the direction in which the viscoelastic body extends. This horizontal component of the tensile force acts as a restoring force that restores the displacement of the upper and lower eyelids. Since the magnetic restoring force decreases as the support device approaches the maximum displacement, the horizontal component of the tensile force of the viscoelastic body may be used as a restoring force that compensates for the decrease in the magnetic restoring force.

  FIGS. 10E and 10F show an example of the distribution of poles of a plurality of magnets in each cage. (E) shows an example of the distribution of the poles above the heel, and (f) shows an example of the distribution of the poles below the heel. A plurality of magnets are not unified as N pole or S pole on the same surface. N pole and S pole are mixed. As a result, a magnetic circuit is formed, and a desired restoring force can be generated with a plurality of small magnets, instead of a single large magnet.

  FIG. 10 is a conceptual diagram illustrating a magnetic circuit formed in the support device when each rod includes a plurality of magnet portions.

  FIG. 10A shows a case having an upper eyelid, an intermediate eyelid, and a lower eyelid. The upper, middle and lower poles have a uniform pole in the vertical direction, and there are multiple directions. Then, a magnetic circuit is formed by using the upper magnetic body of the upper eyelid and the lower magnetic body of the lower eyelid. In order to use such a magnetic circuit, when using a plurality of magnets, it is desirable not to collect magnets having the same pole, but to arrange adjacent magnets to have different poles as much as possible.

  FIG. 10B is a conceptual diagram of the magnetic circuit of the support device in a state where the support device of FIG. The lower magnetic body portion of the upper support device and the upper magnetic body portion of the lower support device are integrated, but may not be integrated. A magnetic circuit similar to the magnetic circuit shown in FIG. In order to cope with a very large maximum displacement, it is necessary to increase the maximum displacement by stacking a large number of intermediate rods. If a large number of intermediate rods are stacked, the magnetic path becomes longer and the magnetic resistance increases, so that the magnetic field is weakened and the magnetic restoring force may be reduced. In such a case, it is possible to increase the maximum displacement by stacking the support devices in the vertical direction, and it is possible to increase the magnetic restoring force by reducing the intermediate rod and shortening the magnetic path of the magnetic circuit. The support device shown in FIG. 10B is effective.

  FIG. 10C shows a case having an upper eyelid and a lower eyelid. This is a bearing device in which a magnetic circuit having the shortest magnetic path in the embodiment is formed. FIG.10 (d) is a conceptual diagram of the magnetic circuit of the support apparatus which piled up the support apparatus of (c) in the perpendicular direction. The structure of the support device shown in FIG. 10 (d) is large as the support device of FIG. 10 (b) because the maximum displacement can be increased by multilayering the support device while maintaining the magnetic circuit with the shortest magnetic path. Effective when dealing with maximum displacement.

  In these examples, the shape of each of the upper collar, the intermediate collar, the lower collar, and the magnet portion is circular so that it can be displaced in any direction in the horizontal direction, but other shapes such as a rectangle may be used. The direction of displacement may be limited.

  DESCRIPTION OF SYMBOLS 1 Supporting device, 3 Upper collar, 5 Middle collar, 7 Lower collar, 11 Upper magnet part, 13 Upper nonmagnetic body part, 14 Bottom surface of upper nonmagnetic body part, 15 Upper sliding part, 16 Upper magnetic body part Lower surface, 17 Upper magnetic body portion, 18, Liquid surface of intermediate ridge, 21 Intermediate magnet portion, 22 Overflow preventive material of intermediate ridge, 23 Intermediate nonmagnetic portion, 24 Lowermost surface of intermediate nonmagnetic portion, 25 Middle lower sliding 26, lower surface of the intermediate non-magnetic material, 28 lower liquid level, 29 intermediate upper sliding portion, 31 lower magnet portion, 32 lower anti-flooding material, 33 lower non-magnetic material portion, 37 lower magnetic material portion, 39 Lower sliding part

Claims (8)

A bearing device that is displaced and restored in at least one horizontal direction,
With multiple buttocks,
The plurality of hooks are in a state of being overlapped in the vertical direction, sliding between adjacent hooks and displaced in the horizontal direction,
Each flange includes a first magnet portion and a non-magnetic body portion surrounding the side surface of the first magnet portion,
The lower surface of the first magnet portion of the upper flange has a first polarity,
The upper surface of the first magnet portion of the lower flange portion has a second polarity opposite to the first polarity,
The lower surface of the first magnet portion of the upper flange portion and the upper surface of the first magnet portion of the lower flange portion are the same size,
In the neutral position,
A bearing device that is at least partially overlapped even in the maximum displaced state. Each collar includes a second magnet part in addition to the first magnet part,
The lower surface of the second magnet portion of the upper flange portion has the second polarity,
The upper surface of the second magnet portion of the lower flange portion is the first polarity,
The non-magnetic part surrounds side surfaces of the first magnet part and the second magnet part,
The lower surface of the second magnet portion of the upper flange portion and the upper surface of the second magnet portion of the lower flange portion are the same size,
In the neutral position,
Even if it is displaced to the maximum, at least part of it overlaps,
The lower surface of the first magnet portion of the upper flange portion and the upper surface of the second magnet portion of the lower flange portion do not overlap even in a state of maximum displacement,
2. The support device according to claim 1, wherein the lower surface of the second magnet portion of the upper flange portion and the upper surface of the first magnet portion of the upper flange portion do not overlap even when displaced to the maximum.   The uppermost brim part and the lowermost brim part have a magnetic part at the upper part and the lower part, respectively, so that the upper magnetic part, the first The support device according to claim 2, wherein a magnetic circuit is formed by a magnet part, a lower magnetic part, and the second magnet part. The lower surface of the upper collar part and the upper surface of the lower collar part are respectively convex downward and concave upward, or concave downward and convex upward.
The collar part includes a first sliding part in a part of the convex shape,
The collar portion includes a second sliding portion at the bottom of the concave recess.
The convex or concave part on the lower surface of the upper collar part is displaced to the maximum by fitting with the concave or convex part on the upper surface of the lower collar part with a horizontal gap. The support device according to any one of claims 1 to 3, wherein the length is limited, and the first sliding portion and the second sliding portion slide.   The bearing device according to any one of claims 1 to 4, wherein a sliding fluid is held in the concave second sliding portion when the concave shape is upward in the collar portion.   The first indirect contact portion that is on the lower surface of the upper flange portion and does not contact the second sliding portion of the lower flange portion and that contacts the sliding liquid, or the lower flange The support device according to claim 5, further comprising a second indirect contact portion that is on an upper surface of a portion and does not contact the first sliding portion of the upper flange portion and contacts the sliding liquid.   The support device according to any one of claims 1 to 6, further comprising a restoring portion that generates a restoring force between the upper flange portion and the lower flange portion other than magnetic force in the state of being displaced at least to the maximum.   A support system in which the support device according to any one of claims 1 to 7 is stacked in a vertical direction, and a lower magnetic body and an upper magnetic body adjacent to each other in the vertical direction are integrated.