JPH09229132A - Magnetic spring type vibration damping device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the vibration of a vibration damping object in the two-dimensional directions, in a small size and at a high reliability, by supporting a movable support installing a movable magnet which moves in the two-dimensional directions, to a fixing member installing a fixing part magnet fixed to a vibration damping object such as a lighting lamp. SOLUTION: A fixed frame 19 is fixed to a vibration damping object, and when an external force is applied to the damping object, the force is applied also to a movable weight 5 and a movable part magnet 9. Since the movable weight 5 and the movable part magnet 9 are installed to the lower part of the fixed frame 19 through a movable supporting table 20, they move form the still positions. In this case, a damping force is generated to the movable weight 5 and the movable part magnet 9 by a conductive plate 16, and the vibration of the damping object in the two-dimensional directions is reduced. The movable supporting table 20 is provided to move fixed side sliders 22 and movable side sliders 25 on fixed side rails 21 and movable side rails 24 by rollers 26, when the movable weight 21 and the movable part magnet 9 move.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure vibration damping device, which uses a single movable weight to cope with vibrations in two-dimensional directions, and is capable of obtaining a vibration damping effect regardless of the direction. Vibration control device.

[0002]

2. Description of the Related Art A conventional dynamic vibration absorber has a structure in which the vibration direction of a structure to be damped is specified and the added weight is vibrated so as to exert a vibration damping effect in that direction. When there are multiple vibration directions to be performed, it is necessary to install as many dynamic vibration absorbers as the number corresponding to the directions. FIG. 11 schematically shows a conventional method of installing a dynamic vibration reducer, and a dynamic vibration reducer in which an additional weight 31 is supported by a rigid element 3 and a damping element 4 in the vibration direction of a vibration damping object 1 is shown. There are multiple units installed. Even with such a method, when a sufficient installation space for the dynamic vibration absorber can be secured as in a large building structure, the vibration in the two-dimensional direction can be reduced without any problem.

However, in the case where a large space for mounting the dynamic vibration absorber cannot be taken, as in the case of an illuminating lamp, however, there is a limit to downsizing due to the complicated structure of the conventional structure, and in order to obtain the vibration damping effect. It was difficult to make proper installation settings.

As a solution to this, a vibration damper using a magnetic spring / damper element has been proposed in recent years. FIG.
2 (a) is a vertical cross-sectional view of a conventional dynamic vibration absorber using a magnetic spring / damper element, and FIG. 12 (b) is an E in (a).
FIG. 4 is a sectional view taken along line -E.

In this conventional example, a multi-structured magnet in which the movable portion inner magnet 6 and the movable portion outer magnet 7 have different magnetic poles with respect to the movable weight 5 is connected via a yoke 8 made of a magnetic material. It is fixed. Hereinafter, the movable part inner magnet 6,
One set of the outer magnet 7 of the movable part and the yoke 8 is generically called a movable part magnet 9.

The yoke 8 is a multi-structure magnet composed of a fixed portion inner magnet 10 and a fixed portion outer magnet 11 such that different magnetic poles are arranged to face the movable portion magnet 9 at the stationary position of the movable portion magnet 9. It is fixed to the vibration suppression object 1 via. That is, when the movable part inner magnet 6 has an N pole, the fixed part inner magnet 10 has an S pole, the movable part outer magnet 7 has an S pole, and the fixed part outer magnet 11 has an N pole. Hereinafter, one set of the fixed portion inner magnet 10, the fixed portion outer magnet 11, and the yoke 8 is collectively referred to as a fixed portion magnet 12.

The movable part magnet 9 and the fixed part magnet 12 are installed with a constant gap 13 therebetween. In order to reduce the size of the vibration damper, the gaps 13 sandwich a plurality of hard spheres 15 with flat bearings 14 that are fixed to the yokes 8 of the movable magnet 9 and the fixed magnet 12 via a bearing support ring 18. It is held by. Further, in this gap 13, the flat seat 14
The conductor plate 16 in which holes are formed is installed so as not to be in contact with each magnet. The conductor plate 16 may be fixed to either the vibration damping target 1 side or the movable weight 5 side, but in the conventional example, the vibration damping target 1 which is the fixed portion side via the conductor plate support ring 17 is provided.
Installed in

According to this structure, when the movable weight 5 and the movable portion magnet 9 move from the stationary position, that is, when the opposing magnets are displaced in the horizontal direction, the movable weight 5 and the movable portion magnet 9 are opposed to each other at the stationary position. An attractive force acts between the magnetic poles, for example, between the movable portion inner magnet 6 and the fixed portion inner magnet 10. On the other hand, the same magnetic poles adjacent to each other, for example, N of the movable portion inner magnet 6
A repulsive force acts when the N pole of the fixed portion outer magnet 11 approaches the pole. The movement from the rest position is possible in any two-dimensional direction, and at the same time, the restoring force acts on the movement in any direction. Further, the magnetic flux passing through the conductor plate 16 installed between the opposed magnets moves relative to the conductor plate 16 as the movable weight 5 and the movable part magnet 9 move, which is an eddy current generated in the conductor plate 16. It acts as a magnetic damping force due to loss.

The spring constant due to the weight of the movable portion and the magnetic restoring force and the damping coefficient due to the conductor plate 16 can be designed according to the known dynamic vibration absorber theory in accordance with the vibration characteristics of the vibration damping object 1.

As described above, since the restoring force and the damping force with respect to the two-dimensional movement of the movable weight 5 and the movable portion magnet 9 can be obtained with a relatively small number of parts, the size can be reduced.

[0011]

In the structure of the above-mentioned dynamic vibration reducer, as shown in FIG.
2 to install the flat bearing 14 between the movable part magnet 9 and
It is necessary to make a hole for the flat seat 14 in the conductor plate 16.
For this reason, there is a problem that it is difficult to apply it to a vibration control target object that requires a large damping force.

In order to secure the necessary volume of the conductor plate 16,
Although it is possible to make the conductor plate 16 thick, it is necessary to widen the gap 13 between the fixed magnet 12 and the movable magnet 9,
In order to secure the magnetic force, it is necessary to make the fixed part magnet 12 and the movable part magnet 9 large, and the size becomes large as a whole. However, it cannot be applied to a case where the installation space for the dynamic vibration absorber is required to be as small as possible, such as an illumination lamp.

Further, since the above-mentioned dynamic vibration absorber has a structure in which the rigid sphere 15 is simply sandwiched by the flat seats 14, the positional relationship between the rigid sphere 15 and the flat seat 14 may be displaced due to slippage or the like. When this deviation becomes large, the range in which the hard sphere 15 can move without coming off the flat seat 14 becomes narrow. When the vibration damping target object 1 receives the torsional force and the movable weight 5 and the movable part magnet 9 rotate, the movable range is similarly narrowed, and there is a problem that a sufficient vibration damping effect cannot be obtained.

The present invention has been made in view of the above conventional circumstances, and an object thereof is a compact and highly reliable magnetic spring type vibration damping device capable of reducing vibration in a two-dimensional direction of a vibration damping target. To provide.

[0015]

In order to achieve the above object, in the magnetic spring type vibration damping device according to the invention of claim 1, a fixed portion fixed to an object to be damped and attached to this fixed portion. A fixed part magnet, a movable support part attached to the fixed part and moving in two dimensions, a movable weight part attached to the movable support part so as to be movable in two dimensions, and a movable weight part attached to the movable weight part. It has a movable part magnet facing the fixed part magnet, and a conductor plate inserted between the fixed part magnet and the movable part magnet.

Since the movable weight portion and the magnet of the movable portion can be moved in two dimensions by the movable support portion attached to the fixed portion, it is not necessary to provide a seat or a hard ball between the magnets as in the conventional example. It is not necessary to make a hole in the conductor plate, and the conductor plate can be made relatively thin. Thereby, the gap between the magnets can be reduced, and the magnets can be relatively downsized. Further, there is no limitation on the movable range as in the conventional example, and a compact and highly reliable vibration damping device can be configured.

According to a second aspect of the present invention, in the magnetic spring type vibration damping device according to the first aspect, the fixed portion has a fixed frame and a fixed plate attached to the upper portion of the fixed frame, and the movable support portion is A collision portion attached to the fixed frame lower portion, the fixed portion magnet attached to the fixed plate, and attached to the fixed frame side surface to limit the movable range of the movable portion magnet and the movable weight portion;
It has a cushioning material attached to the gap between the movable weight portion and the movable support portion.

By mounting a movable weight and a movable part magnet on a movable support part fixed to the lower part of a fixed frame fixed to an object to be damped, it is possible to move in two dimensions. Since it is attached to the upper part via a fixed plate, the movable support part only needs to support the load that is obtained by subtracting the weight of the entire movable part from the attractive force between the fixed part magnet and the movable part magnet. Can be miniaturized. Further, since the movable range of the movable weight section and the movable section magnet is limited by the impact section attached to the fixed section and the cushioning material attached to the movable weight section, a larger force than expected is applied to the vibration suppression target object. Even in such a case, the movable support is not subjected to an excessive load, and the reliability of the operation can be maintained.

According to a third aspect of the present invention, in the magnetic spring type vibration damping device according to the first or second aspect, the movable support portion is a first linear rail attached to any one direction of the fixed portion, and the first linear rail. A linear slider supported by the linear rail of FIG. 2 and linearly moving, a second linear rail mounted on the first slider in a direction orthogonal to the first linear rail, and supported by the second linear rail. It has a second slider which is linearly moved and has a movable portion mounted on the second slider.

By combining a linear rail in two orthogonal directions and a slider, a movable support portion for moving the movable weight portion and the movable portion magnet while supporting them in a two-dimensional arbitrary direction is realized. There is no range limitation,
It is possible to configure a highly reliable vibration damping device. Further, by mounting the second linear rail on the first slider, the movable weights in the two orthogonal directions differ by the amount of the second linear rail, so that the natural frequency of the vibration suppression target depends on the direction. It is also possible to attach a vibration damping device.

According to a fourth aspect of the present invention, in the magnetic spring type vibration damping device according to the third aspect, an additional weight is provided on the second linear rail of the movable support portion. Movable side of movable support part that combines linear rails and sliders in two orthogonal directions (second)
By making it possible to attach additional weight to the rail,
Since it is possible to adjust the difference in the two orthogonal directions of the vibration damping frequency of the vibration damping device in accordance with the direction dependence of the natural frequency of the vibration damping target,
The vibration damping performance can be further improved.

According to a fifth aspect of the present invention, in the magnetic spring type vibration damping device according to the third or fourth aspect, a slider is provided at an end of the first linear rail or the second linear rail provided on the movable supporting portion. Is provided with a spring portion that generates a force according to the amount of movement of the.

A fixed part magnet and a movable part magnet are provided by providing a spring part for generating a force in accordance with the moving amount of the slider at the end of the linear rail of the movable support part which combines the linear rails in two orthogonal directions and the slider. Since the magnetic spring force due to can be compensated, the outer diameters of the movable part magnet and the fixed part magnet can be reduced, and the vibration damping device as a whole can be downsized.

According to the invention of claim 6, claims 1 to 5 are provided.
In the magnetic spring type vibration damping device, the inter-magnet gap adjusting unit for adjusting the distance between the fixed magnet and the movable magnet is provided.

Since the inter-magnet gap adjusting section for arbitrarily adjusting the distance between the fixed magnet and the movable magnet is provided, it is possible to adjust the magnetic attraction force and repulsive force between the magnets, and the vibration damping target object can be adjusted. The magnetic spring force can be arbitrarily adjusted according to the natural frequency of. As a result, it is possible to cope with the secular change of the natural frequency of the vibration suppression target.

According to a seventh aspect of the present invention, in the magnetic spring type vibration damping device according to the first or second aspect, the movable support portion comprises:
A rotation support portion provided on the fixed portion, a first arm horizontally rotatably attached to the rotation support portion, a second arm horizontally rotatably attached to the first arm, and a second arm And a movable part to be attached.

A movable arm supporting a movable weight and a movable magnet in a two-dimensional arbitrary direction is realized by a horizontal arm having two degrees of freedom, and the movable range is not limited as in the conventional example. It is possible to configure a highly reliable vibration damping device. Moreover, since the movable supporting portion can be configured with a relatively small number of parts, the reliability is further improved.

According to an eighth aspect of the present invention, a fixed portion fixed to the object to be damped, a fixed portion magnet attached to the fixed portion, a movable portion magnet facing the fixed portion magnet, and the movable portion magnet. A movable weight part mounted on the fixed part magnet, a conductor plate interposed between the fixed part magnet and the fixed part magnet between the movable part magnets, and a sliding plate inserted between the fixed part magnet and the movable part magnet on the movable part magnet side. , A first contact support part which is attached to the movable part magnet and contacts the sliding plate to support the attraction force between the fixed part magnet and the movable part magnet, and the movable weight part is installed with a fixed gap from the fixed part. And a second contact support portion that is provided.

The contact support part attached to the movable part magnet makes two-dimensional movement possible by contacting the sliding plate interposed between the fixed part magnet and the movable part magnet and supporting the attraction force between the magnets. As a result, it is not necessary to make a hole in the conductor plate as in the conventional example, and a sufficient magnetic damping force can be obtained even with a relatively thin conductor plate. Further, there is no limitation on the movable range as in the conventional example. Even if a large force is applied in the direction of separating the magnets, the two-dimensional movement is possible while the force is supported by the contact support portions attached to the fixed portion and the movable weight portion. In this way, since the movable supporting portion can be realized with a relatively simple structure, the vibration damping device can be downsized and the reliability can be improved.

According to a ninth aspect of the present invention, in the magnetic spring type vibration damping device according to the eighth aspect, the fixed portion has a fixed frame and a fixed plate attached to the upper portion of the fixed frame, and the fixed portion magnet and the conductor are provided. The plate is attached to the fixed plate, and has a collision part attached to the side surface of the fixed frame for limiting the movable range of the movable part magnet and the movable weight part, and a cushioning member attached to the movable weight part.

By using a roller having a spherical body as the contact support portion, the sliding resistance force of the contact support portion due to the movement of the movable weight portion and the movable portion magnet becomes small. It is possible to obtain a good vibration damping effect even in a range where the vibration is relatively small, and the performance of the vibration damping device can be improved. Further, since the movable range of the movable weight section and the movable section magnet is limited by the impact section attached to the fixed section and the cushioning material attached to the movable weight section, a larger force than expected is applied to the vibration suppression target object. Even in such a case, since the movable range can be limited to the range where the magnetic spring force acts, the reliability is improved.

According to a tenth aspect of the present invention, in the magnetic spring type vibration damping device according to the eighth or ninth aspect, a part or all of the first and second contact support portions have a flat or curved shape. It consists of members.

By using a sliding body having a flat surface or a spherical surface in the contact portion as the contact support portion, the structure can be simplified and an inexpensive and highly reliable vibration damping device can be constructed.

According to an eleventh aspect of the invention, in the magnetic spring type vibration damping device according to the second aspect, the seventh aspect, the ninth aspect or the tenth aspect,
The fixed frame is an airtight container that seals the space including the movable part magnet and the movable weight part to fill an arbitrary liquid.

By moving the movable weight part and the movable part magnet in the closed container filled with the lubricating oil, the resistance force accompanying the movement of the movable support part is reduced, and the vibration of the vibration damping object is relatively small. It is also possible to obtain a vibration damping effect and improve the performance of the vibration damping device. Further, since each sliding part is in the lubricating oil, the wear of each part is reduced and the reliability of the vibration damping device can be improved.

According to the twelfth aspect of the present invention, in the magnetic spring type vibration damping device according to the eighth aspect, the second movable part magnet is attached to the movable weight part, and the second movable part magnet is opposed to the second movable part magnet. The second fixed magnet is attached to the fixed portion.

Since the movable part magnets are provided above and below the movable weight and the fixed part magnets are attracted from above and below, the load on each sliding part of the movable support part is reduced and the resistance force due to the sliding is also reduced. The performance and reliability of the vibration damping device can be improved.

The magnetic spring type vibration damping device according to claim 13 is
A fixed part fixed to the damping object, a fixed part magnet attached to the fixed part, a first flat seat attached to the fixed part magnet, and a movable part magnet facing the fixed part magnet, The movable weight part is attached to the movable part magnet, the second flat seat is attached to the movable part magnet, and is sandwiched between the fixed part magnet and the first and second flat seats of the movable part magnet. It has a hard sphere and a rotation stopper formed of two parallel links between the movable weight portion and the fixed portion.

According to a fourteenth aspect of the present invention, in the magnetic spring type vibration damping device according to the thirteenth aspect, a first rail attached to the fixed portion and a first slider for moving the first rail are provided. , A second rail attached to the first slider so as to be orthogonal to the first rail, and a second slider that moves the second rail and is attached to the movable weight section. Is to have.

According to the thirteenth and fourteenth aspects of the present invention, in the vibration control device of the two-dimensional movement support using the hard sphere and the flat bearing shown in the conventional example, the rotation stop by the parallel link or the straight line rail and the slider is provided above the movable weight portion. Since the portion is provided, the movable range is not limited by the rotation of the movable weight portion and the movable portion magnet, and the reliability of the vibration damping device can be improved.

[0041]

DETAILED DESCRIPTION OF THE INVENTION Referring to FIG.
1 to 3 will be described. FIG. 1 (a) is a longitudinal sectional view of the magnetic spring type vibration damping device according to the first embodiment, and FIG. 1 (b) is a sectional view taken along the line AA in FIG. 1 (a).

In the first embodiment, as in the conventional example, the multiple-structure magnet in which the movable portion inner magnet 6 and the movable portion outer magnet 7 have different magnetic poles with respect to the movable weight 5 is a magnetic material. It is fixed via a yoke 8 made of. Hereinafter, one set of the movable part inner magnet 6, the movable part outer magnet 7, and the yoke 8 is generically referred to as a movable part magnet 9.

A multi-structured magnet having a different magnetic pole facing each other at a stationary position of the movable part magnet 9 is also arranged at a position facing the movable part magnet 9 through a yoke 8. That is, when the movable part inner magnet 6 has an N pole, the fixed part inner magnet 10 has an S pole, the movable part outer magnet 7 has an S pole, and the fixed part outer magnet 11 has an N pole. Hereinafter, one set of the fixed portion inner magnet 10, the fixed portion outer magnet 11, and the yoke 8 is collectively referred to as a fixed portion magnet 12.

The fixed frame 19 is fixed to an object to be damped, such as an illumination lamp (not shown). Fixed frame 19
A movable support table 20 that is a movable support is attached to the lower part of the. The movable support table 20 includes two fixed-side rails 21 fixed to a fixed frame 19,
A fixed slider 22 that linearly moves along each fixed rail 21, two movable rails 24 that are mounted between the fixed sliders 22 via a rail mounting portion 23, and a straight line along each movable rail 24. Moving movable slider 2
5 and a movable table 27 which is a movable portion mounted between the movable sliders 25. Each slider moves while being guided by each rail by a roller 26.

A movable weight 5 is fixed to the movable table 27. A movable magnet 9 is fixed on the movable weight 5. A collision rubber 28, which is a cushioning material, is attached to the cylindrical portion of the movable weight 5. The fixed frame 19 is provided with a collision ring 29 that collides with the collision rubber 28 and limits the movable range of the movable weight 5 and the movable portion magnet 9. In FIG. 1B, the position of the movable weight 5 and the position of the collision ring 29 are indicated by dotted lines.

A fixed plate 30 is fixed on the fixed frame 19. The fixed plate magnet 12 is fixed to the fixed plate 30 at a position where a fixed gap 13 is formed between the fixed plate magnet 30 and the movable plate magnet 9. Further, the conductor plate 16 is fixed between the movable magnet 9 and the fixed magnet 12 via the conductor plate support ring 17.

In the magnetic spring type vibration damping device thus constructed, the fixed frame 19 is fixed to a vibration damping target such as an illuminating lamp, although not shown. When an external force is applied to this vibration suppression object due to an earthquake or the like, the force is also applied to the movable weight 5 and the movable part magnet 9. The movable weight 5 and the movable part magnet 9 are disposed on the lower part of the fixed frame 19 and are movable supporting table
Since it is attached so as to be movable two-dimensionally through 0, while keeping the gap 13 with the fixed magnet 12 constant,
Move from its rest position. At this time, a restoring force due to the magnetic force between the movable part magnet 9 and the fixed part magnet 12 and a damping force due to the conductor plate 16 are generated in the movable weight 5 and the movable part magnet 9. The restoring force and the damping force are measured in advance by measuring the natural frequency of the object to be damped, and are adjusted so as to suppress the vibration. The restoring force and the damping force act similarly when an external force is applied in either of the two-dimensional directions. Therefore, the vibration-damping target equipped with the magnetic spring type vibration damping device of the present invention reduces vibration in two-dimensional directions.

When the movable weight 5 and the movable portion magnet 9 move, the movable support table 20 intersects the fixed side rails 2 orthogonal to each other.
The fixed slider 22 and the movable slider 25 are moved by the rollers 26 on the movable rail 1 and the movable rail 24. As a result, the movable weight 5 and the weight of the movable portion magnet 9 can be moved to an arbitrary two-dimensional position while supporting the weight.
During this movement, the movable support table 20 is pulled upward by the magnetic attraction force between the fixed magnet 12 and the movable magnet 9, but the movable weight 5 and the movable magnet 9 are downward forces. , Only needs to support a relatively small force.

The collision ring 29 attached to the fixed frame 19 and the collision rubber 28 attached to the movable weight 5 are movable by a large amount when a large force is applied to the movable weight 5 and the movable part magnet 9. The movable range is limited before reaching the limit of the movable range of the support table 20. As a result, a large force is not applied to the movable support table 20, so that the reliability can be improved. Further, the maximum stroke of the movable weight 5 and the movable part magnet 9 can be adjusted by arbitrarily changing the thickness of the collision rubber as required.

Although the double cylindrical magnet is shown as the multi-structured magnet in the above embodiment, a plurality of cylindrical magnets may be arranged. Further, the fixed part magnet 12 is mounted on the upper side and the movable part magnet 9 is mounted on the lower side. However, in some cases, the same operation can be obtained even if the movable part magnet 9 is turned upside down.

The conductor plate 16 has a movable weight of 5 on the object 1 side to be damped.
It may be fixed on either side or may be dispersed and fixed on both sides. Further, the conductor plate 16 may be integrally fixed to the stationary magnet 12 via an electrically insulating material.

The movable weight 5 may be divided into several pieces so that the weight can be arbitrarily selected according to the vibration of the vibration damping object. Further, by appropriately selecting the shape and position of the movable weight 5, it is possible to deal with the frequency dependence of the natural frequency of the vibration suppression target.

Although the roller 26 is used as the rail and slider that form the movable support table 20, a linear guide such as a linear guide, a ball screw or a linear spline may be used.

The collision ring 29 may be directly attached to the object to be damped, or the object to be damped itself may be molded into an appropriate shape and substituted. Further, the fixed frame 19 may be molded into a cylindrical shape and used as a substitute.

For the collision ring 29, a rubber material, a cushioning material, a leaf spring, an air spring or the like may be used in combination or in place of it. These may be attached to the side of the rubber for collision 28. Movable weight 5
Also, when the moving amount of the movable part magnet 9 is small, the collision rubber 28 and the collision circular ring 29 may be omitted.

Alternatively, the fixed frame 19 may not be provided, and the fixed frame 19 may be directly incorporated in the object to be damped. For example, a luminaire case is provided with a cylindrical container part, and the movable support table 2 is provided at the bottom part thereof.
0, the movable weight 5 and the movable part magnet 9 are attached, and the fixed part magnet 12 and the conductor plate 16 are attached to the bottom part of the upper lid of the lighting case, whereby the number of parts can be reduced as a whole, and the size and weight can be reduced. it can. In this case, the collision ring 29 can be substituted by the inner surface of the cylindrical container portion.

The magnetic spring type vibration damping device may be mounted on the vibration damping device for vertical vibration to obtain a vibration damping effect in three-dimensional directions. As described above, the first aspect of the present invention
According to the embodiment, it is not necessary to cut out the conductor plate 16, and the conductor plate can be thinned. Further, the gap 13 can be made small, and each magnet can be made relatively small.

Further, since there is no factor that narrows the movable range of the movable weight 5 and the movable portion magnet 9, it is possible to construct a highly reliable vibration damping device that operates reliably. Further, since the movable range of the movable weight 5 and the movable part magnet 9 is limited within a certain range by the collision ring 29 and the collision rubber 28, a large force is not applied to the movable support table 20, and the movable support table 20 is movable. The strength required for the support table 20 is reduced, and the size and weight can be reduced.

Further, by arranging the fixed part magnet 12 on the upper side and the movable part magnet 9 on the lower side to keep the load of the movable support table 20 small, the movable support table 20 does not need to have a large strength, and It is possible to reduce the resistance force such as the rolling friction force of the roller 26 as each slider moves along the rail.

Therefore, the magnetic spring type vibration damping device according to the present embodiment can be made compact and lightweight.
In addition, when an external force such as an earthquake acts, the vibration of the vibration damping target can be reduced with high reliability.

Next, referring to FIG. 2, the fourth and third aspects of the present invention will be described.
A second embodiment according to No. 5 will be described. FIG. 2 is a diagram showing the configuration of the movable support table 20 according to the second embodiment. In FIG. 2, the fixed frame 19, the fixed side rail 21, the fixed side slider 22, the roller 26, the movable side rail 24, the rail mounting portion 23, the movable side slider 25, and the movable table 27 are the same as those in the first embodiment. And operates in the same manner.

An additional weight 31 is attached to the movable rail 24. Further, at both ends of the fixed side rail 21 and the movable side rail 24, an end slider 32 and an end spring 33 which are guided by the rails and move along the rails.
Is attached.

The parts other than the movable support table 20 are
The configuration is similar to that of the first embodiment shown in FIG. The operation of the second embodiment having the above configuration will be described.

At the time of adjusting the magnetic spring force and the magnetic damping force of the magnetic spring type vibration damping device of the present invention, an additional weight of 3 is added to the movable side rail 24 in accordance with the direction dependence of the natural frequency of the vibration damping object.
Attach 1. The additional weight 31 and the weights of the movable side rail 24, the fixed side slider 22, and the rail mounting portion 23 move in the direction of the fixed side rail 21, but do not move in the direction of the movable side rail 24. It is possible to change the vibration damping frequency. Thus, even if the natural frequency is slightly different depending on the vibration direction such as in an illumination lamp, the vibration damping can be performed by optimally selecting the additional weight 31, the movable weight 5, and the mounting direction of each rail to the vibration suppression target. The performance can be improved.

Next, when the movable weight 5 and the movable part magnet 9 of the magnetic spring type vibration damping device of the present invention move, and the slider moves to the vicinity of the end of each rail, for example, the fixed side slider 22 moves to the end slider. It comes in contact with 32 and moves further while pushing it. This causes displacement of the end spring 33,
A force that pushes back the fixed slider 22 is generated. In this way, the magnetic spring force between the fixed magnet 12 and the movable magnet 9 can be supplemented at the end of each rail, so that each magnet can be miniaturized.

The additional weight 31 is the movable weight of the movable rail 24.
The rail mounting portion 23 fixed integrally with the rail mounting portion 2 may be mounted on the fixed side slider 22.
3. The additional weight 31 may be adjusted by replacing the fixed slider 22 itself.

Further, the vibration damping balance may be adjusted in more detail by appropriately setting the mounting position of the additional weight 31. The end spring 33 of each rail end is
A damper may be used, or a spring and a damper may be used together.
Alternatively, the end slider 32 may be omitted, and the force of the end spring 33 may directly act on each slider.

As described above, according to the second embodiment, it is possible to improve the vibration damping performance for a vibration damping target object such as an illuminating lamp which has a slight direction dependence on its natural frequency.

Further, even if the magnetic spring force between the fixed part magnet 12 and the movable part magnet 9 is insufficient, it can be compensated for, so that each magnet can be miniaturized. Next, an embodiment according to claim 6 of the present invention will be described with reference to FIG. FIG. 3 is a vertical cross-sectional view showing the third embodiment.
In FIG. 3, a gap adjusting bolt 35, which is an inter-magnet gap adjusting portion, is attached to the fixing plate attaching portion 34 on the upper portion of the fixed frame 19. The gap adjusting bolt 35 is fixed by a rotation stop nut 36. The fixing plate 30 is mounted on the gap adjusting bolt 35. The fixed plate 30 is attached to the fixed plate attachment portion 34 with a fixing bolt 37. Arbitrary numbers of these gap adjusting bolts 35, detent nuts 36, and fixing bolts 37 are attached.

The parts other than the above are constructed in the same manner as in the first embodiment shown in FIG. The operation of the third embodiment having the above configuration will be described.

When adjusting the magnetic spring force between the fixed part magnet 12 and the movable part magnet 9, all the fixing bolts 37 are removed, the detent nut 36 is loosened, and the gap adjusting bolt 35 is adjusted to an arbitrary position. As a result, the fixed plate 30 that fixes the fixed magnet 12 moves up and down, and the gap 13 between the fixed magnet 12 and the movable magnet 9 can be adjusted. After the adjustment, the detent nut 36 is tightened again, and the fixing plate 30 is fixed to the fixing plate mounting portion 34 with the fixing bolt 37.

As described above, since the gap 13 can be set arbitrarily, the magnetic spring force can be adjusted. Alternatively, a spacer may be provided between the fixed plate attachment portion 34 and the fixed plate 30, and the gap 13 between the fixed portion magnet 12 and the movable portion magnet 9 may be adjusted by the thickness thereof.

Further, the gap adjusting bolt 35, the fixing bolt 37, and the detent nut 36 described above may be provided between the fixed plate 30 and the yoke 8 of the fixed portion magnet 12. As described above, according to the magnetic spring type vibration damping device of the third embodiment, it is possible to adjust the magnetic attraction force and the repulsive force between the gap 13, that is, the fixed portion magnet 12 and the movable portion magnet 9, and the damping force is adjusted. The magnetic spring force can be arbitrarily set according to the natural frequency of the object to be shaken. Further, it is possible to cope with the secular change of the natural frequency of the vibration suppression target.

Next, referring to FIG. 4, the seventh aspect of the present invention will be described.
A fourth embodiment of the present invention will be described. Figure 4 (a) shows the fourth
4B is a vertical sectional view of the magnetic spring type vibration damping device according to the embodiment of the present invention, and FIG. 4B is a sectional view taken along line BB in FIG. 4A.

In FIG. 4, a movable support arm 38 which is a movable support is fixed to the fixed frame 19. The movable support arm 38 includes a rotation support portion 39 fixed to the fixed frame 19, a first arm 41 attached to the rotation support portion 39 through a rotation shaft 40 so as to be horizontally rotatable, and a first arm 41.
The arm 41 includes a second arm 42 that is horizontally rotatably attached via a rotation shaft 40, and a movable table 27 that is a movable portion that is horizontally attached to the tip of the second arm 42 via the rotation shaft. There is.

Movable support arm 38 which is the movable support section.
The other parts are configured in the same manner as the first embodiment shown in FIG. The operation of the fourth embodiment having the above configuration will be described.

The movable support arm 38 can move only horizontally, and does not move vertically, but can support a load such as an attractive force between the fixed magnet 12 and the movable magnet 9 in a horizontal arm. Is.

On the movable table 27 of the movable support arm 38, the movable weight 5 and the movable portion magnet 9 are mounted. At this time, each arm of the movable support arm 38 has a length that does not extend even when the movable weight 5 and the movable part magnet 9 are at the positions farthest from the rotation support part 39. Further, even when the arms are brought close to the rotation supporting portion 39, the arms are in a positional relationship such that they do not interfere with the fixed portion or the like.

When the movable weight 5 and the movable part magnet 9 move, the movable support arm 38 supports the movable weight 5 and the movable part magnet 9 in the vertical direction, while rotating the movable support arm 39 and the first support magnet 38.
The arm 41 and the second arm 42 are horizontally rotated by the respective rotary shafts 40. As a result, the fixed magnet 12 and the movable magnet 9
The movable weight 5 and the movable part magnet 9 can be moved to arbitrary two-dimensional positions while maintaining the gap 13 therebetween.

In the above embodiment, one arm is provided for each, but a parallel link type arm may be used to increase the load resistance. Further, a configuration may be adopted in which the load of each arm is reduced by mounting the plurality of movable support arms 38 in any direction.

As described above, according to the magnetic spring type vibration damping device of the fourth embodiment, since the movable supporting portion can be constructed with a relatively small number of parts, the reliability is improved. Next, a fifth embodiment according to claims 8 and 9 of the present invention will be described with reference to FIG. FIG. 5 is a vertical cross-sectional view of a magnetic spring type vibration damping device according to an a5th embodiment.

A sliding plate 43 made of, for example, ceramics, which is non-magnetic and has wear resistance, is attached to the lower portion of the conductor plate 16. An upper contact support roller 44, which is a movable support part, is attached to the upper part of the movable part magnet 9. Further, a lower contact support roller 45 is attached to the lower part of the movable weight 5 with an arbitrary gap left from the lower part of the fixed frame 19. Each of these is made of a non-magnetic material such as stainless steel or ceramic. The lower portion of the fixed frame 19 is a flat surface within the movable range of the movable weight 5 and the movable portion magnet 9.

The parts other than the above are constructed similarly to the first embodiment shown in FIG. The operation of the fifth embodiment having the above configuration will be described.

In FIG. 5, when a force is applied to a vibration damping target (not shown), the movable weight 5 and the movable part magnet 9 support the attraction force between the fixed part magnet 12 and the movable part magnet 9 by the upper contact support roller 44. It rolls on the surface of the sliding plate 43. Obviously, this movement is possible in any two-dimensional direction.

Even if the movable weight 5 and the movable portion magnet 9 drop by a large downward force, the lower contact support roller 45 can move while being guided by the lower portion of the fixed frame 19.

In order to reduce the cost, the sliding plate 43 and the upper contact support roller 44 of the above-described embodiment use an inexpensive magnetic material, and the magnets are enlarged to make the fixed part magnet 12 and the movable part. A method of ensuring the magnetic force between the magnets 9 may be used.

Further, the lower contact support roller 45 is omitted,
A method in which an arbitrary gap is provided between the lower portion of the fixed frame 19 and the movable weight 5 and the movable weight 5 and the magnet 9 of the movable portion are slid between the bottom portion of the movable weight 5 and the fixed frame 19 so as to fall. But it's okay. At this time, an arbitrary number of contact supporting portions (rollers, spherical surfaces, etc.) may be attached within the movable range of the movable weight 5 and the movable portion magnet 9 at the bottom of the fixed frame 19 to reduce the frictional force due to sliding. Further, a sliding plate is provided below the fixed frame 19 or at the bottom of the movable weight 5.
(Oil-impregnated metal plate, Teflon plate, high graphite material, etc.) may be attached to reduce frictional force due to sliding. A contact support portion (spherical surface or the like) of an arbitrary shape may be integrally formed on the lower portion of the fixed frame 19 or the bottom portion of the movable weight 5.

Further, the sliding plate 43 is attached to the upper surface of the movable part magnet 9, and an arbitrary number of contact supporting parts (rollers, spherical surfaces, etc.) are provided within the movable weight 5 of the lower surface of the conductor plate 16 and the movable range of the movable part magnet 9. It may be provided.

Although the fixed magnet 12 is mounted on the upper side and the movable magnet 9 is mounted on the lower side, the same operation may be performed if the strengths of the upper contact support roller 44 and the sliding plate 43 are sufficiently large, even if they are turned upside down. It is possible to obtain.

The sliding plate 43 may be attached to the fixed frame 19, and the conductor plate 16 and the fixed magnet 12 may be attached to the upper portion of the sliding plate 43. The conductor plate 16 may be attached to the movable part magnet 9. Further, the fixed plate 30 and the movable part magnet 9 may be dispersed and attached.

The fixed frame 19 may not be provided, and the fixed frame 19 may be directly incorporated in the object to be damped. For example, a cylindrical container portion is provided in the illumination lamp case, the fixed magnet 12, the conductor plate 16, and the sliding plate 43 are attached to the bottom of the upper lid of the illumination lamp case, and the attraction between the fixed magnet 12 and the movable magnet 9 is provided below it. By attaching the movable part magnet 9 and the movable weight 5 by force,
The number of parts can be reduced as a whole, and the size and weight can be reduced. In this case, the collision ring 29 can be substituted by the inner surface of the cylindrical container portion.

As described above, according to the magnetic spring type vibration damping device of the fifth embodiment, it is not necessary to make a hole in the conductor plate as in the conventional example. You can get the power. Further, there is no limitation on the movable range as in the conventional example. Furthermore, since the movable supporting portion can be realized with a relatively simple structure, the vibration damping device can be downsized and its reliability can be improved.

Further, since a roller having a spherical body in the contact portion is used as the contact support portion, the resistance force caused by the movement of the movable weight 5 and the movable portion magnet 9 becomes small,
A good vibration damping effect can be obtained even in a range where the vibration of the vibration damping object is relatively small, and the performance of the vibration damping device can be improved. In addition, the collision ring 29 attached to the fixed frame 19 and the collision rubber 28 attached to the movable weight 5.
Since the movable range of the movable weight 5 and the movable part magnet 9 is limited by the above, the movable range can be limited to the range in which the magnetic spring force acts even when a larger force than expected is applied to the vibration suppression target. , Reliability is improved.

A sixth embodiment according to claim 10 of the present invention will be described with reference to FIG. FIG. 6 is a longitudinal sectional view of a magnetic spring type vibration damping device according to a sixth embodiment. A sliding plate 43 made of, for example, ceramics, which is non-magnetic and has wear resistance, is attached to the lower portion of the conductor plate 16. An upper contact support member 46, which is a movable support, is provided above the movable magnet 9.
Is attached. Also, below the movable weight 5,
The lower contact support member 47 is attached to the lower portion of the fixed frame 19 with an arbitrary gap. The sliding portions of the upper contact support member 46 and the lower contact support member 47 are molded into a flat surface or an arbitrary curved surface, for example, a spherical surface. The lower part of the fixed frame 19 has a movable weight 5 and a movable part magnet 9.
The movable range of is a plane.

The parts other than the above are configured in the same manner as in the first embodiment shown in FIG. The operation of the sixth embodiment having the above configuration will be described.

In FIG. 6, when a force is applied to an object to be damped (not shown), the movable weight 5 and the movable part magnet 9 support the attraction force between the fixed part magnet 12 and the movable part magnet 9 by the upper contact support member 46. It slides on the surface of the sliding plate 43. Obviously, this movement is possible in any two-dimensional direction.

Even if the movable weight 5 and the movable part magnet 9 fall by a large force downward, the lower contact support member 47 can move while being guided by the lower part of the fixed frame 19.

In the above embodiment, the sliding plate 43, the upper contact supporting member 46, or the lower contact supporting member 47 may be made of a sliding material (oil-containing metal, Teflon, high graphite material, etc.).

Further, the lower contact support roller 45 shown in FIG. 5 may be attached instead of the lower contact support member. As described above, according to the magnetic spring type vibration damping device of the sixth embodiment, it is possible to simplify the movable support portion and improve the reliability.

Next, referring to FIG. 7, claim 11 of the present invention will be described.
A seventh embodiment according to the present invention will be described. FIG. 7 is a vertical cross-sectional view of the magnetic spring type vibration damping device according to the seventh embodiment.
The fixed frame 19 is molded in an airtight container shape. The conductor plate 16 is attached to a conductor plate fixing portion 48 provided on the fixed frame 19 via an O-ring 49. The space below the conductor plate 16 is filled with lubricating oil 50.

A sliding plate 43 made of, for example, ceramics, which is non-magnetic and has wear resistance, is attached to the lower portion of the conductor plate 16. An upper contact support member 46, which is a movable support portion, is attached to the upper portion of the movable portion magnet 9. Further, a lower contact support member 47 is attached to the lower portion of the movable weight 5 with an arbitrary gap left from the lower portion of the fixed frame 19. Upper contact support member 46 and lower contact support member 4
The sliding portion 7 is molded into a flat surface or an arbitrary curved surface, for example, a spherical surface. The lower part of the fixed frame 19 has a movable weight of 5
The movable range of the movable part magnet 9 is a flat surface.

The parts other than the above are configured in the same manner as in the first embodiment shown in FIG. The operation of the seventh embodiment having the above configuration will be described.

In FIG. 7, when a force is applied to a vibration damping target (not shown), the movable weight 5 and the movable part magnet 9 support the attraction force between the fixed part magnet 12 and the movable part magnet 9 by the upper contact support member 46. It slides on the surface of the sliding plate 43. Obviously, this movement is possible in any two-dimensional direction. In addition, since the sliding plate 43 and the upper contact support member 46 can be satisfactorily lubricated with the lubricating oil 50 during movement, the frictional force associated with the movement of the movable weight 5 and the movable portion magnet 9 can be reduced. Further, since the viscous resistance force when the movable weight 5 and the movable portion magnet 9 move in the lubricating oil 50 can be utilized, the conductor plate 16 can be made thin.

Even if the movable weight 5 and the movable part magnet 9 drop by a large force downward, the lower contact support member 47 can move while being guided by the lower part of the fixed frame 19.

In the above embodiment, the upper contact supporting member 46 and the lower contact supporting member 47 may be the upper contact supporting roller 44 and the lower contact supporting roller 45 shown in FIG.

Further, using a lubricating oil 50 having high viscosity,
The number of parts may be reduced by eliminating the conductor plate 16 and using only the sliding plate 43. Alternatively, the sliding plate 43 may be used as a conductor material and the conductor plate 16 may be omitted.

The viscosity may be arbitrarily set by attaching a heater for controlling the temperature of the lubricating oil, a temperature sensor, and a control device. In order to increase the viscous resistance during the movement of the movable weight 5 and the movable part magnet 9, the movable weight 5 may be provided with an arbitrary uneven shape.

As described above, according to the magnetic spring type vibration damping device of the seventh embodiment of the present invention, the movable supporting portion can be simplified,
Further, since the frictional resistance force during movement of the movable weight 5 and the movable portion magnet 9 can be made relatively small, reliability can be improved.
Further, since the viscous force can be supplemented by the lubricating oil 50 and the conductor plate 16 can be thinned, the size can be reduced.

An eighth embodiment according to claim 12 of the present invention will be described with reference to FIG. FIG. 8 is a vertical sectional view of a magnetic spring type vibration damping device according to an eighth embodiment. The fixed frame 19 is made of, for example, stainless steel that is non-magnetic and has strength.

A sliding plate 43 made of, for example, ceramics, which is non-magnetic and has wear resistance, is attached to the lower portion of the conductor plate 16. An upper contact support member 46, which is a movable support portion, is attached to the upper portion of the movable portion magnet 9. Further, a lower contact support member 47 is attached to the lower portion of the movable weight 5 with an arbitrary gap left from the lower portion of the fixed frame 19. Upper contact support member 46 and lower contact support member 4
The sliding portion 7 is molded into a flat surface or an arbitrary curved surface, for example, a spherical surface. The lower part of the fixed frame 19 has a movable weight of 5
The movable range of the movable part magnet 9 is a flat surface.

Below the movable weight 5, the lower movable part magnet 5 is provided.
1 is fixed. A lower fixed magnet 53 is fixed to the lower portion of the fixed frame 19 via a lower fixed frame 52. The configurations of the lower movable part magnet 51 and the lower fixed part magnet 53 are similar to those of the movable part magnet 9 and the fixed part magnet 12.

The parts other than the above are configured similarly to those of the first embodiment shown in FIG. The operation of the eighth embodiment having the above configuration will be described.

In FIG. 8, when a force is applied to an object to be damped (not shown), the movable weight 5 and the movable part magnet 9 are moved between the fixed part magnet 12 and the movable part magnet 9 by the upper contact support member 46 or the lower contact support member 47. Alternatively, the lower movable part magnet 5
It slides on the surface of the sliding plate 43 or the lower part of the fixed frame 19 while supporting the attractive force between 1 and the lower fixed part magnet 53. Obviously, this movement is possible in any two-dimensional direction. At this time, the magnetic force between the fixed part magnet 12 and the movable part magnet 9 is almost the same as the magnetic weight between the movable weight 5, the movable part magnet 9 and the lower movable part magnet 51 and the magnetic force between the lower movable part magnet 51 and the lower fixed part magnet 53. By making the balance, the frictional force generated in the upper contact support member 46 or the lower contact support member 47 can be significantly reduced.

In the above embodiment, the upper contact supporting member 46 and the lower contact supporting member 47 may be the upper contact supporting roller 44 and the lower contact supporting roller 45. Further, as in the seventh embodiment, the movable weight 5 in the lubricating oil 50 is reduced.
The movable part magnet 9 and the lower movable part magnet 51 may move.

Lower movable part magnet 51 and lower fixed part magnet 53
The conductor plate 16 may be attached between them to increase the damping force. As described above, according to the magnetic spring type vibration damping device of the eighth embodiment, the frictional force generated in the upper contact supporting member 46 or the lower contact supporting member 47 can be significantly reduced, and the vibration damping target object can be reduced. Even if a relatively small vibration is applied, a good damping effect can be obtained, so that the damping performance can be improved.

Further, since the wear of each sliding part due to the movement of the movable weight 5 and the movable part magnet 9 can be reduced, the reliability can be improved. Next, a ninth embodiment according to claim 13 of the present invention will be described with reference to FIG. FIG. 9A is a vertical sectional view of a magnetic spring type vibration damping device according to a ninth embodiment, and FIG. 9B is a sectional view taken along line CC in FIG. 9A.

On the lower part of the fixed frame 19, a vibration damping device of the conventional example shown in FIG. 12 is attached. Figure 9 (
12A, the same parts as those in FIG. 12 are designated by the same reference numerals, and the description of the configuration will be omitted.

A rubber 28 for collision is attached to the movable weight 5. A collision ring 29 is attached to the fixed frame 19. A cover 54 is attached to the upper part of the fixed frame 19.

A parallel link mechanism 57 is attached between the upper portion of the movable weight 5 and the fixed frame 19 via a rotary fulcrum portion 55 and a link attachment portion 56. The parallel link mechanism 57 includes two first links 58 having the same length, two second links 59 having the same length, and the link attachment portion 5.
In the configuration, one connection link 60 having a rotation fulcrum center interval equal to the rotation support center interval of each link in 6 is connected by a rotation pin 61 so as to be rotatable in the horizontal direction. Further, the rotation fulcrum portions 55 also have an interval equal to the rotation support center interval of each link in the link attachment portion 56.

The operation of the ninth embodiment thus constructed will be described. The movable weight 5 and the movable portion magnet 9 cause the collision ring 29.
And when it moves to an arbitrary position within the movable range limited by the rubber for collision 28, the two first parts of the parallel link mechanism 57 are moved.
The link 58 and the two second links 59 are always parallel to each other, and the line connecting the two rotation support centers of the link mounting portion 56, the connection link 60, and the line connecting the rotation support centers of the two rotation fulcrums 55 are also always parallel. Becomes This makes it possible to restrain the degrees of freedom of the movable weight 5 and the movable portion magnet 9 in the rotational direction. As is clear from FIG. 9B, such a rotation prevention function is effective for the two-dimensional movement of the movable weight 5 and the movable portion magnet 9 in any arbitrary direction.

In the above embodiment, each rotating pin 61 may have a structure in which a bearing is used to reduce the frictional force during rotation. As described above, according to the magnetic spring type vibration damping device of the ninth embodiment, the movable weight 5
Also, since the movable range is not limited by the rotation of the movable magnet 9, the reliability is improved.

Next, referring to FIG. 10, claim 14 of the present invention
A tenth embodiment of the present invention will be described. FIG. 10A is a vertical sectional view of the magnetic spring type vibration damping device according to the tenth embodiment, and FIG. 10B is a sectional view taken along the line DD in FIG. 10A.

On the lower part of the fixed frame 19, a vibration damping device of the conventional example shown in FIG. 12 is attached. In FIG. 10A, the same parts as those in FIG. 12 are designated by the same reference numerals, and the description of the configuration will be omitted.

Collision rubber 28 is attached to the movable weight 5. A collision ring 29 is attached to the fixed frame 19. A cover 54 is attached to the upper part of the fixed frame 19.

Two first rails 62 are attached to the fixed frame 19. A first slider 63 is linearly movable on each of the first rails 62.
A second rail 64 is attached to the first slider 63. A second slider 65 is attached to the second rail 64 so as to be linearly movable. The second slider 65 is
It is fixed to the upper part of the movable weight 5 by a slider mounting portion 66.

The operation of the tenth embodiment having the above structure will be described. The movable weight 5 and the movable part magnet 9 make the collision ring 2
9 and the rubber 28 for collision, when it moves to an arbitrary position within the movable range limited by the first rail 62 and the second rail 6.
The first slider 63 and the second slider 65 linearly move under the guidance of the respective Nos. As a result, it is possible to restrain the degrees of freedom of the movable weight 5 and the movable portion magnet 9 fixed to the second slider 65 in the rotational direction. As is clear from FIG. 10B, such a rotation preventing function is effective for the two-dimensional movement of the movable weight 5 and the movable portion magnet 9 in an arbitrary direction.

In the above-mentioned embodiment, the stability of movement may be improved by using a plurality of second rails 64.
Further, by attaching an additional weight to the second rail 64, it may be possible to adjust the directional dependence of the natural frequency of the vibration suppression target.

As described above, according to the magnetic spring type vibration damping device of the tenth embodiment, the movable range is not limited by the rotation of the movable weight 5 and the movable portion magnet 9.
Reliability is improved.

[0129]

As described above, in the magnetic spring type vibration damping device of the present invention, the movable weight is supported by the magnetic restoring force in a two-dimensional arbitrary direction, and one movable weight is independent of the direction. No, vibration damping effect is obtained. Further, by installing a conductor plate between the opposing magnets, the function of a magnetic damper can be added, and the two-dimensional vibration damping device having a spring element and a damping element can be relatively downsized. Further, since the movable support portion is not provided between the fixed portion magnet and the movable portion magnet, it is not necessary to cut out the conductor plate, and a large magnetic damping effect can be easily obtained. The movable range is not limited by the rotation of the movable weight. Further, even in the case of using the hard sphere and the flat seat, the movable weight and the movable range magnet are prevented from limiting the movable range by providing the rotation stopping mechanism for the movable weight. As described above, it is possible to provide a magnetic spring type vibration damping device that is small in size, lightweight, and highly reliable, and that can reduce the vibration of the vibration damping target in the two-dimensional direction.

[Brief description of drawings]

FIG. 1A is a longitudinal sectional view of a magnetic spring type vibration damping device according to a first embodiment of the present invention, and FIG. 1B is an A in FIG.
FIG.

FIG. 2 is a plan view of a magnetic spring type vibration damping device according to a second embodiment of the present invention.

FIG. 3 is a vertical sectional view of a magnetic spring type vibration damping device according to a third embodiment of the present invention.

4A is a vertical sectional view of a magnetic spring type vibration damping device according to a fourth embodiment of the present invention, and FIG. 4B is a sectional view taken along line BB in FIG. 4A.

FIG. 5 is a longitudinal sectional view of a magnetic spring type vibration damping device according to a fifth embodiment of the present invention.

FIG. 6 is a vertical sectional view of a magnetic spring type vibration damping device according to a sixth embodiment of the present invention.

FIG. 7 is a vertical sectional view of a magnetic spring type vibration damping device according to a seventh embodiment of the present invention.

FIG. 8 is a longitudinal sectional view of a magnetic spring type vibration damping device according to an eighth embodiment of the present invention.

9A is a longitudinal sectional view of a magnetic spring type vibration damping device according to a ninth embodiment of the present invention, and FIG. 9B is a C in FIG. 9A.
-C line arrow sectional view.

10A is a vertical cross-sectional view of a magnetic spring type vibration damping device according to a tenth embodiment of the present invention, and FIG. 10B is a cross-sectional view taken along the line D-D in FIG. 10A.

FIG. 11 is a schematic configuration diagram of a conventional dynamic vibration damping type vibration damping device.

12 (a) is a vertical cross-sectional view of a conventional dynamic vibration absorber using a magnetic spring / damper element, and FIG. 12 (b) is EE in (a).
FIG.

[Explanation of symbols]

1 ... Object to be damped 2 ... Addition weight 3 ... Rigid element 4 ... Damping element 5 ... Movable weight 6 ... Movable part inner magnet 7 ... Movable part outer magnet 8 ... Yoke 9 ... Movable part Magnet 10 ... Fixed part inner magnet 11 ... Fixed part outer magnet 12 ... Fixed part magnet 13 ... Gap 14 ... Flat seat 15 ... Hard ball 16 ... Conductor plate 17 ... Conductor plate support ring 18 ... Seat support ring 19 ... Fixed frame 20 ... Movable support table 21 ... Fixed side rail 22 ... Fixed side slider 23 ... Rail mounting part 24 ... Movable side rail 25 ... Movable side slider 26 ... Roller 27 Movable table 28 Collision rubber 29 Collision ring 30 Fixed plate 31 Additional weight 32 End slider 33 End spring 34 Fixed plate mounting part 35 Gap Adjustment bolt 36 Non-rotating nut 37 ... Fixing bolt 38 ... Movable support arm 39 ... Rotation support part 40 ... Rotation shaft 41 ... First arm 42 ... Second arm 43 ... Sliding plate 44 ... Upper contact support roller 45 ... lower contact support roller 46 ... upper contact support member 47 ... lower contact support member 48 ... conductor plate fixed part 49 ... O ring 50 ... lubricating oil 51 ... lower movable part magnet 52 ... lower fixed Frame 53 ... Lower fixed part magnet 54 ... Cover 55 ... Rotation fulcrum part 56 ... Link attachment part 57 ... Parallel link mechanism 58 ... First link 59 ... Second link 60 ... Connection link 61 ... Rotating pin 62 First rail 63 First slider 64 Second rail 65 Second slider 66 Slider mounting part

Claims (14)

[Claims] 1. A fixed portion fixed to an object to be damped, a fixed magnet attached to the fixed portion, a movable support portion attached to the fixed portion and moving in a two-dimensional direction, and a movable support portion. A movable weight part that is attached so as to be movable in two dimensions, a movable part magnet that is attached to the movable weight part and faces the fixed part magnet, and a conductor plate that is interposed between the fixed part magnet and the movable part magnet. A magnetic spring type vibration damping device having. 2. The fixed part has a fixed frame and a fixed plate mounted on the fixed frame upper part, the movable support part is mounted on the lower part of the fixed frame, and the fixed part magnet is mounted on the fixed plate. And a collision member attached to the side surface of the fixed frame for limiting the movable range of the movable portion magnet and the movable weight portion, and a cushioning member attached to a gap between the movable weight portion and the movable support portion. The magnetic spring type vibration damping device according to claim 1. 3. The movable support portion includes a first linear rail attached to the fixed portion in any one direction, a first slider supported by the first linear rail to linearly move, and a first linear rail. A second linear rail mounted on the slider in the direction perpendicular to the first linear rail, a second slider supported by the second linear rail to move linearly, and a second linear rail mounted on the second slider. The magnetic spring type vibration damping device according to claim 1 or 2, further comprising a movable part attached thereto. 4. The magnetic spring type vibration damping device according to claim 3, wherein an additional weight is provided on the second linear rail of the movable support portion. 5. A spring portion for generating a force according to a movement amount of a slider is provided at an end portion of the first linear rail or the second linear rail provided on the movable support portion. The magnetic spring type vibration damping device according to claim 3. 6. The magnetic spring type vibration damping device according to claim 1, further comprising an inter-magnet gap adjusting unit that adjusts a gap between the fixed magnet and the movable magnet. 7. The movable support part is provided with a rotation support part provided on the fixed part, a first arm attached to the rotation support part so as to be horizontally rotatable, and horizontally rotatable with respect to the first arm. The magnetic spring type vibration damping device according to claim 1 or 2, further comprising a second arm to be attached and a movable portion attached to the second arm. 8. A fixed part fixed to an object to be damped, a fixed part magnet attached to the fixed part, a movable part magnet facing the fixed part magnet, and a movable weight part attached to the movable part magnet. A conductor plate interposed between the fixed part magnet and the movable part magnet on the fixed part magnet side; a sliding plate inserted between the fixed part magnet and the movable part magnet on the movable part magnet side; A first contact support part attached to the movable part magnet for contacting the sliding plate to support the attraction force between the fixed part magnet and the movable part magnet; and a fixed weight part provided in the movable weight part with the fixed part. A magnetic spring type vibration damping device having a second contact support part attached thereto. 9. The fixed portion has a fixed frame and a fixed plate attached to the upper portion of the fixed frame, and the fixed portion magnet and the conductor plate are attached to the fixed plate and attached to the side surface of the fixed frame. 9. The magnetic spring type vibration damping device according to claim 8, further comprising: a collision part that limits a movable range of the movable part magnet and the movable weight part, and a cushioning material attached to the movable weight part. 10. The magnetic spring type vibration damper according to claim 8, wherein a part or all of the first and second contact support portions is made of a sliding member having a flat or curved shape. apparatus. 11. The fixed frame is an airtight container,
8. The space containing the movable part magnet and the movable weight part is sealed to fill an arbitrary liquid,
9. The magnetic spring type vibration damping device described in 9 or 10. 12. The second movable part magnet is attached to the movable weight part, and the second fixed part magnet facing the second movable part magnet is attached to the fixed part. 11. The magnetic spring type vibration damping device described in 11. 13. A fixed part fixed to a vibration damping object, a fixed part magnet attached to the fixed part, a first flat seat attached to the fixed part magnet, and the fixed part magnet facing each other. Movable part magnet, movable weight part attached to the movable part magnet, a second plane seat attached to the movable part magnet, and between the fixed part magnet and the first and second plane seats of the movable part magnet. A magnetic spring type vibration damping device, comprising: a hard sphere sandwiched between the movable weight part and a fixed part, and a rotation stopping part formed by two parallel links. 14. A first rail attached to the fixed portion, a first slider moving on the first rail, and a first slider attached to the first slider so as to be orthogonal to the first rail. 14. The magnetic spring type vibration damping device according to claim 13, further comprising a rotation stopping portion composed of two rails and a second slider which moves on the second rail and is attached to the movable weight portion.