HK1211074A1 - Base isolation stand - Google Patents

Description

Vibration-free table

Technical Field

The present invention relates to a vibration isolation base capable of blocking transmission of vibration energy of an earthquake or the like to a mount, and more particularly to a structure of a side cover serving as a shield of an internal mechanism thereof.

Background

In art museums, and the like, there is a need to protect exhibits such as art articles, antiques, and the like from disasters due to vibration of earthquakes or the like. In order to protect the exhibits such as fine arts and antiques from disasters caused by vibration, the fine arts and the antiques are displayed on a vibration-free table. The vibration isolation platform comprises the following parts: the vibration energy isolation device includes a base, a vibration energy isolation device attached to the base, and a mounting table attached via the vibration energy isolation device. The vibration energy blocking device blocks transmission of vibration energy on the substrate side to the mounting table. By blocking the vibration energy, the display article on the mounting table can be prevented from falling down due to vibration, and the display article can be protected.

The invention described in patent document 1 is an example of such a vibration isolation stage. Fig. 14 and 15 show the structure of the vibration isolation table disclosed in patent document 1. In fig. 14 and 15, the base 10 is fixed to the base member 8 in a superposed manner. The base member 8 and the base 10 are both substantially square in planar shape, and two slide rails 16 are attached to the base 10 in a pair parallel to each other along the side edges of the base 10 at positions close to both side edges of the base 10. As is known, the slide rail 16 is constituted by: the inner rail is provided with an outer rail, an inner rail, a retainer interposed between the inner rail and the outer rail, and balls retained by the retainer and interposed between the inner rail and the outer rail. The inner and outer rails are smoothly linearly moved with each other by rolling of the balls between the inner and outer rails.

A coil spring 20 as an origin return member is provided in a space above the base 10 held by the slide rails 16 on both side edges of the base 10. Both end portions of the coil spring 20 are hooked on the plate-like spring holders 36, 38. The longitudinal ends of the spring holders 36, 38 are received by holding members 40, 42 provided on the base 10. The coil spring 20 is held in a state of being slightly biased in the tension direction by the holding structure constituted by the spring holders 36, 38 and the holding members 40, 42.

A square 1 st movable base 12 is placed on the slide rail 16, and the upper rail surface of the slide rail 16 is coupled to the 1 st movable base 12. Two slide rails 18 are mounted on the 1 st movable table 12 in a pair parallel to each other along the side edges of the 1 st movable table 12 at positions close to the side edges of the 1 st movable table 12. The slide rail 18 has the same structure as the slide rail 16 described above. The direction of the slide rail 18 is a direction orthogonal to the direction of the slide rail 16. In the space above the 1 st movable table 12 held by the slide rails 18 on both side edges, a coil spring 22 as an origin return member is provided. The coil spring 22 is held in a state of being slightly biased in the tension direction by a holding structure constituted by the spring holders 36, 38 and the holding members 40, 42. The coil spring 22 and the coil spring 20 are oriented orthogonally to each other.

The 2 nd movable table 14 having a square shape is mounted on the slide rail 18, and the upper rail surface of the slide rail 18 is coupled to the 2 nd movable table 14. The top plate 82 covers the 2 nd movable table 14 from above. The top plate 82 moves integrally with the 2 nd movable table 14. The top plate 82 constitutes a platform on which an article such as a display can be placed.

An engaging member 44 is provided on the lower surface side of the 1 st movable stage 12 so as to correspond to the spring holders 36 and 38. The engaging member 44 is engaged with the spring holder 36 or the spring holder 38 by the movement of the 1 st movable stage 12 in the direction of the slide rail 16. When the 1 st movable stage 12 moves, the engaging member 44 in combination engages with one of the spring holder 36 and the spring holder 38, and moves one of the spring holders 36 and 38 outward to extend the coil spring 20. Thereby, the coil spring 20 accumulates a force to return the 1 st movable stage 12 to the origin.

An engaging member (not shown) that engages with the spring holder 36 or the spring holder 38 by the movement of the 2 nd movable stage 14 is also provided on the lower surface side of the 2 nd movable stage 14. When the 2 nd movable stage 14 moves and the above-described engaging member engages with one of the spring holders 36, 38, the coil spring 22 expands, and a force to return the 2 nd movable stage 14 to the origin is accumulated.

Between the base 10 and the 2 nd movable stage 14, a vibration energy isolation device is constituted by a slide rail 16 and a slide rail 18 which are disposed in directions orthogonal to each other. Since the vibration energy blocking device is provided, even if the base 10 vibrates due to an earthquake or the like, the top plate 82 as the mounting table moves relative to the base 10, and the transmission of the earthquake energy to the top plate 82 is blocked. The vibration energy blocking device exerts a vibration isolation effect of reducing transmission of vibration energy to the top plate 82 during an earthquake, and protects the exhibit on the top plate 82.

As is clear from fig. 14 and 15, an installation space for the vibration energy blocking device is provided between the base 10 and the 2 nd movable stage 14, and if a shielding object is not provided, the vibration energy blocking device is exposed. If the vibration energy isolation device is exposed, the appearance is deteriorated, and there is a problem that dust is likely to enter the vibration energy isolation device portion.

Therefore, in the conventional example shown in fig. 14 and 15, the periphery of the vibration isolation table is surrounded by the side cover 24. The side cover 24 is formed of a rectangular plate capable of closing each of the four square openings of the vibration isolation table, and rubber magnets 94 and 96 are fixed to the inner surface side thereof in two stages, i.e., upper and lower. One side of an L-shaped metal fitting 92 is fixed between rubber magnets 94, 96 on the inner surface side of the side cover 24, and the other side of the L-shaped metal fitting 92 protrudes at right angles from the inner surface of the side cover 24. One side of an L-shaped metal fitting 78 is fixed to the upper surface of the peripheral edge portion of the 1 st movable stage 12, and the other side of the L-shaped metal fitting 78 stands upright so as to be positioned on the same plane as the end surface of the 1 st movable stage 12.

Fig. 15 shows an operation state in which the vibration energy blocking apparatus composed of the 1 st and 2 nd slide rails 16 and 18 is returned to the original position by the accumulated force of the upper and lower coil springs. In this state, one side of the L-shaped metal fitting 92 of the side cover 24 is placed on the upper surface of the base 10, and the upper rubber magnet 94 attracts the end surface of the 1 st movable stage 12 and one side of the L-shaped metal fitting 78. In addition, the lower rubber magnet 96 attracts the end surface of the base 10. The side covers 24 around the vibration isolation table surround the opening on the side of the vibration isolation table, and serve as a shield for preventing the internal mechanism of the vibration isolation table from being seen from the outside.

When the base 10 vibrates together with the floor due to an earthquake or the like, the 1 st and 2 nd movable tables 12 and 14 tend to remain in place due to inertial force. The slide rail 16 of the vibration energy blocking device blocks the vibration energy in the length direction from being transmitted to the 1 st movable table 12. The energy component in the direction orthogonal to the longitudinal direction of the slide rail 16 is transmitted to the slide rail 18. The energy component is blocked by the slide rail 18 of the vibration energy blocking device and is not transmitted to the 2 nd movable stage 14.

As described above, when the 1 st movable stand 12 and the 2 nd movable stand 14 exhibit the vibration isolation effect by moving relative to the base 10 due to vibration such as an earthquake, the side cover 24 is pushed. When the 1 st movable stage 12 moves, the end thereof presses the rubber magnet 94 on the upper side of the side cover 24. The side cover 24 is tilted with the end surface of the base 10 and the suction position of the lower rubber magnet 96 as a fulcrum, and a gap between the base 10 and the 2 nd movable stage 14 is opened. Thereafter, the side cover 24 is retracted from the outward movement path of the 1 st movable stage 12 and the movement path of the spring holder 36 (or the spring holder 38) carried by the 1 st movable stage 12, and the vibration energy blocking device operates without interference from the side cover 24.

When the 2 nd movable stage 14 is moved in the direction perpendicular to the paper surface in fig. 15 by the linear movement of the slide rail 16, the member moving together with the 2 nd movable stage 14 presses the side cover 24 and tilts the side cover 24 as described above. After the vibration energy blocking device is operated, the 1 st and 2 nd movable tables 12 and 14 are returned to the home positions by the origin return member formed of the coil spring. The dump side shield 24 is manually installed in place.

Patent documents 2 and 3 are known as prior art documents relating to the present invention. The invention described in patent document 2 supports a side cover that shields an internal structure rotatably by a hinge at an edge of a frame of a seismic isolation device. The side cover is urged in a closing direction by a spring, and has a buffer member for preventing rotation of the side cover based on the urging force at a rotational position at which the side cover obstructs the view of the internal structure. The side cover is pushed by a force exceeding the urging force and rotates in the opening direction during the vibration isolation operation.

The invention described in patent document 3 supports a side plate of a shielded internal structure on an edge of an upper plate of a vibration isolation device so as to be rotatable by being biased in an opening direction by a spring. There is a latch member that maintains the rotating side plates in the closed position against an applied force. The latch member is unable to maintain the closed position of the side plate due to stress during the shock-free operation, and the side plate is thereby rotated to the open position by the application of force.

Documents of the prior art

Patent document

Patent document 1: japanese patent No. 2954882

Patent document 2: japanese laid-open patent publication No. 11-153185

Patent document 3: japanese laid-open patent publication No. 11-287291

Disclosure of Invention

In the example of the conventional vibration isolation table shown in fig. 14 and 15, a side cover is provided to improve the appearance. In order to prevent the side cover from interfering with the vibration isolation operation, the side cover is pushed to incline during the vibration isolation operation. Therefore, the side cover is held at a predetermined position by magnetic attraction and is removed from the predetermined position when the vibration isolation operation is performed. Therefore, after the vibration isolation operation, the side cover must be manually returned to the original position, which makes the returning operation troublesome. In addition, the side cover needs to be pushed against the magnetic attraction force during the vibration isolation operation, and the vibration isolation effect is reduced corresponding to the force required for pushing the side cover.

In the invention described in patent document 2, the side cover is pressed against the urging force and rotated during the vibration isolation operation. In the invention described in patent document 3, the side plate is pressed and rotated by a force exceeding the holding force generated by the latch member at the time of the vibration isolation operation. In any of the inventions described in patent documents 2 and 3, the vibration isolation effect is exhibited only after a force equal to or greater than a force applied to the side cover and the side plate is applied, and the vibration isolation effect is reduced.

The invention aims to provide a vibration isolation table which prevents a side cover for improving the appearance from becoming a factor for reducing the vibration isolation effect and does not need to perform the resetting operation of the side cover after the vibration isolation operation.

The invention is a vibration isolation table, comprising: a base member and a vibration energy isolation device mounted on the base member and isolating vibration energy transmission of the base member side, wherein a vibration isolation object is placed on the vibration energy isolation device, the vibration isolation table is characterized in that,

a side cover having a shield to be the vibration energy blocking means,

the side cover is rotatably suspended from a side edge portion of the vibration isolation table around an axis of an upper portion of the side cover, and is pushed and swung from an inner side to an outer side when the vibration energy blocking device performs the vibration energy blocking operation.

Effects of the invention

When the base member vibrates due to an earthquake or the like, the vibration energy blocking device moves relative to the base member to perform a vibration isolation operation. When the vibration energy isolation device performs the vibration isolation operation, the side cover is pushed from the inside to the outside, and the side cover swings. The side cover can swing with smaller force, and the vibration-proof effect is hardly reduced due to the side cover. When the vibration energy blocking device is reset to the original position, the side mask is also reset to the original suspension state.

Drawings

Fig. 1 is a perspective view showing an example of use of the vibration isolation table according to the embodiment of the present invention.

Fig. 2 is a perspective view of an embodiment of the seismic isolation station.

Figure 3 is a front view of an embodiment of the seismic isolation station described above.

Figure 4 is a front cross-sectional view of an embodiment of the seismic isolation station described above.

Fig. 5 is a front sectional view showing an operation state of the vibration isolation stage according to the embodiment.

Fig. 6 is an enlarged front sectional view showing a main part of the vibration isolation table according to the embodiment.

Fig. 7 is a plan view showing another operation state of the vibration isolation table according to the embodiment.

Fig. 8 is a bottom view of the mounting table in the above embodiment.

Fig. 9 is a bottom view showing another example of the mounting table applicable to the present invention.

Fig. 10 is a perspective view showing an example of use of the vibration isolation table according to another embodiment of the present invention.

Fig. 11 is a front sectional view showing a part of still another embodiment of the vibration isolation table of the present invention.

Fig. 12 is a front sectional view showing an operation state of the vibration isolation stage according to the embodiment of the present invention.

Fig. 13 is a front sectional view showing still another embodiment of the vibration isolation table of the present invention.

Fig. 14 is an exploded perspective view showing an example of a conventional seismic isolation mount.

Fig. 15 is an enlarged front sectional view showing a main part of the conventional vibration isolation stage.

Description of the reference numerals

100 vibration-proof table

102 base member

104 backplane

105 sliding rail (the 1 st straight line moving mechanism)

108 st movable table

110 sliding rail (2 nd straight line moving mechanism)

112 outer rail

114 inner rail

116 holder

118 ball

120 nd 2 nd movable table

124 carrying table

126 position limiting member

128 bearing block

130 axle

132 side cover

140 origin reset parts (helical spring)

142 spring frame

144 holding member

400 show stand

500 vibration-proof table

Detailed Description

Embodiments of the vibration isolation stage of the present invention are described below with reference to the drawings.

Example 1

In fig. 1, the vibration isolation table 100 is installed on a display table 400, and an article 300 such as an art or antique is placed on the vibration isolation table 100. The display stand 400 is covered with the transparent box 200, the transparent box 200 covers the periphery of the article 300, and the article 300 can be viewed from the outside through the transparent box 200.

As shown in fig. 2 and 3, the upper surface of the vibration isolation table 100 is covered with a mounting table 124, and an article can be mounted on the mounting table 124. The planar shape of the mounting table 124 is a square, and side covers 132 are disposed on the four sides of the periphery thereof. Each side cover 132 functions as a shield to prevent the internal structure of the vibration isolation table 100 from being seen, and also serves to maintain the appearance of the vibration isolation table 100.

Short quadrangular prism-shaped bearing blocks 128 are integrally provided on the lower surfaces of the four corners of the mounting table 124. The bearing block 128 may be made of plastic or the like. A shaft 130 is held horizontally between a pair of opposing bearing blocks 128 at four side edge portions of the mounting table 124. The side covers 132 are supported by these shafts 130, respectively. Each side cover 132 is suspended rotatably about the shaft 130 at the upper portion of the side cover. The side cover 132 is formed of a rectangular plate-like member that can cover the side opening of the vibration isolation table 100. The side cover 132 is cut out at both ends in the longitudinal direction at upper portions thereof in a right-angled shape to form escape portions with respect to the bearing block 128.

The vibration isolation table 100 has a vibration energy isolation device below the stage 124. The specific structure of the vibration energy blocking device is explained below with reference to fig. 4 to 7. The vibration isolation table 100 has a square plate-like base member 102, and a bottom plate 104 is attached to an upper surface of the base member 102. The 1 st linear movement mechanism mainly including a slide rail 105 is mounted on the base plate 104. The slide rail 105 includes an outer rail 106, an inner rail 107, and a holder and balls interposed between the outer rail 106 and the inner rail 107, as in the slide rail of the conventional example shown in fig. 14 and 15. The slide rail 105 has the same structure as that of the slide rail 110 described later.

The slide rails 105 are disposed in parallel with each other at both side edge portions of the bottom plate 104, and are arranged in a pair of two at each side edge portion. The outer surface of the outer rail 106 of each slide rail 105 is a bottom surface and fixed to the base plate 104, and the outer surface of the inner rail 107 is an upper surface to which a 1 st square movable base 108 is coupled. The outer rail 106 and the inner rail 107 of each slide rail 105 are relatively movable in the longitudinal direction thereof. Thus, the 1 st movable table 108 can move relative to the base member 102 in a direction parallel to the paper surface and in the left-right direction in fig. 6.

A 2 nd linear movement mechanism mainly including a plurality of slide rails 110 is mounted on the 1 st movable stage 108. The slide rails 110 are disposed in parallel with each other on both side edge portions of the 1 st movable table 108, and are arranged in a pair of two on each side edge portion of the 1 st movable table 108. As shown in fig. 6, each slide rail 110 includes: outer rails 112 whose widthwise opposite side edge portions are bent upward to form a semicircular cross section, and inner rails 114 whose widthwise opposite side edge portions are bent downward to form a semicircular cross section. The inner rail 114 is located inside the outer rail 112, and a space having a circular cross section is formed by the curved edge portions on both sides of the outer rail 112 and the curved edge portions on both sides of the inner rail 114. An appropriate number of balls 118 are interposed in the space having a circular cross section, and each ball 118 is held by a holder 116 interposed between the inner and outer rails 112, 114.

Each slide rail 110 including the inner and outer rails 112 and 114, the holder 116, and the balls 118 has an outer surface of the outer rail 112 as a bottom surface and is fixed to the 1 st movable table 108. Further, the outer surface of the inner rail 114 becomes an upper surface, and a square 2 nd movable table 120 is coupled to the upper surface. The outer rail 112 and the inner rail 114 of each slide rail 110 are capable of relative movement along their length. Thereby, the 2 nd movable stage 120 can move straightly in the direction perpendicular to the paper surface in fig. 6 with respect to the 1 st movable stage 108. The positional relationship between the outer rail 112 and the inner rail 114 of each slide rail 110 may be reversed. The slide rails 105 constituting the 1 st linear motion mechanism may have the inner and outer rails in a vertically opposite positional relationship.

The 2 nd movable stage 120 is covered with a mounting table 124 having a substantially square planar shape. As described above, the mounting table 124 has the bearing blocks 128 integrally formed on the lower surfaces of the four corners. As shown in fig. 8, a spacer (spacer)125 is fixed to the lower surface of the mounting table 124, and the spacer 125 has a window-shaped space 148 of various shapes and sizes. The outer shape of the spacer 125 is a square shape smaller than the mounting table 124. A position regulating member 126 is attached to the lower surface of the mounting table 124 along each of the outer surfaces of the four sides of the spacer 125. The position regulating member 126 is shorter than the spacer 125 in length on each of the outer sides. The lower end of the position regulating member 126 protrudes downward from the lower surface of the spacer 125.

When the mounting table 124 is placed on the 2 nd movable table 120, the position regulating member 126 moves down along each of the outer side surfaces of the four sides of the 2 nd movable table 120, and the relative positional relationship of the mounting table 124 in the horizontal direction with respect to the 2 nd movable table 120 is determined. The relative positional relationship of the stage 124 with respect to the 2 nd movable table 120 in the vertical direction is determined by the lower surface of the spacer 125 being in contact with the upper surface of the 2 nd movable table 120. When the table 124 is positioned and covered on the 2 nd movable stage 120 in this manner, the side cover 132 suspended by the shaft 130 at four sides of the table 124 hangs down along the gravity. The side cover 132 surrounds a space between the base member 102 and the mounting table 124, and serves as a shield for the internal mechanism of the vibration isolation table 100.

The plurality of slide rails 105 and 110 constituting the 1 st and 2 nd linear movement mechanisms constitute a vibration energy blocking device for blocking transmission of vibration energy from the base member 102 side to the mounting table 124. The vibration energy isolation device is configured by arranging a plurality of slide rails so as to be overlapped in mutually orthogonal directions so that the mounting table 124 can move in all directions in a horizontal plane. The vibration energy blocking apparatus has an origin resetting means for resetting the 1 st and 2 nd movable tables 108 and 120 moved by the vibration isolation operation to the origin. The "vibration isolation operation" refers to the operation of the vibration energy isolation device, i.e., the vibration energy isolation operation.

Fig. 7 shows a coil spring 140 as an origin return member for returning the 2 nd movable stage 120 and the mounting table 124 to the origin after the vibration energy blocking operation, and a spring holder 142 and a holding member 144 thereof. The structure of the coil spring 140, the spring holder 142, and the holding member 144 is not significantly different from that of the conventional example shown in fig. 14. Fig. 7 shows only one end side of the coil spring 140, but the other end side of the coil spring 140 is also supported by the same spring holder 142 and a holding member 144 that holds the spring holder 142. The coil spring 140 is disposed between the pair of slide rails 110 along both sides.

When the 2 nd movable stage 120 moves in one direction with respect to the 1 st movable stage 108 via the slide rail 110, an engagement member, not shown, of the 2 nd movable stage 120 engages with the spring holder 142, and the spring holder 142 is pushed outward. In the example shown in fig. 7, one of the spring holders 142 hidden by the mounting table 124 is pushed outward, and the coil spring 140 expands and stores a force. The 2 nd movable stage 120 and the mounting table 124 can be returned to the original position by the accumulated force of the coil spring 140. When the mounting table 124 moves downward together with the 2 nd movable table 120 in the opposite direction to the state shown in fig. 7, the engagement member of the 2 nd movable table 120 separates the spring holder 142 shown on the lower side in fig. 7 from the holding member 144 and moves downward in fig. 7. The coil spring 140 expands and stores a force to return the 2 nd movable table 120 and the mounting table 124 to the origin.

An origin returning means for returning the 1 st movable table 108, which is moved relative to the base member 102 by the slide rail 105 as the 1 st linear movement mechanism, to the origin is also provided between the base member 102 and the 1 st movable table 108. The origin return member is not shown, but is constituted by a coil spring supported by a spring holder and a holding member as in the example shown in fig. 7. An engaging member provided on the 1 st movable stage 108 is configured to engage with the spring holder to store a force of the coil spring.

The side covers 132 provided around the mounting table 124 are present on the movement path of the slide rail 105 or the slide rail 110 when the vibration isolation device constituted by the slide rails 105 and 110 performs the vibration isolation operation. In the example shown in fig. 6, when the 1 st movable stage 108, the mounting table 124, and the side cover 132 move rightward together with the inner rail 107 of the slide rail 105, the outer rail 106 of the slide rail 105 is present on the moving path of the left side cover 132. Therefore, the inner surface of the side cover 132 abuts against the outer rail 106, and the side cover 132 is pushed from the inside to the outside and swings about the shaft 130. The side cover 132 can swing with a very small force, and does not interfere with the vibration isolation operation by the sliding of the slide rail 105.

When the 1 st movable stage 108 moves leftward in fig. 6, the right side cover 132 swings while contacting the outer rail 106 of the slide rail 105. While the 1 st movable table 108 is relatively moved with respect to the base member 102 due to an earthquake or the like, the lower end edge of the side cover 132 comes into contact with the upper surface of the outer rail 106, and the lower end edge of the side cover 132 moves while sliding on the upper surface of the outer rail 106. When the vibration due to the earthquake subsides, the 1 st movable stage 108 is returned to the original point, and the side cover 132 is also returned to a state of hanging down in the gravity direction, and becomes a shield for the internal mechanism of the base isolation stage 100.

The origin return means formed by a coil spring is located within the height range of the slide rail 105 as the linear movement mechanism, and the entire height of the vibration isolation stage 100 is suppressed. As shown in fig. 4, a stopper 146 for defining the movement limit of the stage 124 during the vibration energy blocking operation is provided between the pair of slide rails 105. The stop 146 is also located within the height of the slide rail 105. Therefore, when the vibration energy blocking operation is performed by the movement of the lower edge of the side cover 132 in contact with the upper surface side of the outer rail 106, the origin return member and the stopper 146 smoothly perform the movement without interfering with the side cover 132.

When the 2 nd movable stage 120 moves in the direction orthogonal to the paper surface in fig. 6 with respect to the 1 st movable stage 108, the side cover 132 comes into contact with the outer rail 112 of the slide rail 110, and the side cover 132 swings. Fig. 6 shows a state in which one side cover 132 swings. As shown in fig. 6, when the mounting table 124 moves together with the 2 nd movable table 120 to perform the vibration isolation operation, the lower end edge of the side cover 132 moves while sliding on the upper surface of the outer rail 112. The operation of the side cover 132 is the same as the operation of the side cover 132 based on the movement of the 1 st movable stage 108 described above.

A coil spring 140 constituting the origin return means of the 2 nd movable stage 120 and the mounting table 124 is depicted in fig. 7. The end portions of the coil spring 140 are coupled to the longitudinal center portion of the spring holder 142. Both longitudinal end portions of the spring holder 142 are held by holding members 144. The coil spring 140, the spring holder 142, the holding member 144, and the stopper for defining the movement limit of the mounting table 124 are located within the height range of the slide rail 110 as the linear movement mechanism, and the entire height of the vibration isolation table 100 is suppressed. During the vibration energy blocking operation, the lower end edge of the side cover 132 slides on the upper surface of the outer rail 112. The side cover 132 smoothly slides without interfering with the origin return member and the stopper.

As shown in fig. 4, 8, and the like, the spacer 125 arranged to overlap the inside of the mounting table 124 is formed with a window-like space 148 having various shapes and sizes. The weight for adjusting the weight can be accommodated in the gap 148 according to the weight of the article placed on the vibration isolation table 100, so that the maximum vibration isolation effect can be obtained. Alternatively, an insect repellent may be contained in order to protect an art or antique from insects, and a humidity regulator, an aromatic agent, and others may be contained therein.

The positioning of the mounting table 124 with respect to the 2 nd movable table 120 may be performed by the boss and the insertion hole thereof. Fig. 9 shows an example in which a suitable number of protrusions 150 are formed on the spacer 125 fixed to the table 124 on the table 124 side. These protrusions 150 are fitted into insertion holes formed in the 2 nd movable stage 120, and the mounting table 124 is positioned on the 2 nd movable stage 120 and coupled thereto.

According to the embodiment of the vibration isolation table described above, the side cover of the shielding object serving as the internal mechanism of the vibration isolation table is suspended rotatably about the shaft at the side edge of the mounting table, and the side cover is pushed outward and swings when the vibration energy blocking operation is performed. Since the force required for the swinging of the side cover is only slight, the swinging of the side cover does not interfere with the vibration-proof effect. Since the side cover is automatically reset to the original operating state as long as the vibration subsides and the operating state of the vibration isolation table is reset to the original point, the manual reset operation is not required.

Example 2

The embodiment 1 described above is a configuration in which a mounting table is mounted on a vibration isolation table 100. The embodiment shown in fig. 10 is configured without a table, and transparent box 200 as a display box is placed on display table 400, and display table 400 is placed on relatively large-sized base isolation table 500.

The vibration isolation stage 500 has a vibration energy isolation device having the same configuration as that of the vibration energy isolation device of embodiment 1. The vibration energy isolation device has a 1 st linear movement mechanism and a 2 nd linear movement mechanism which are configured by slide rails capable of moving in mutually orthogonal directions, in the upper and lower directions. The display stand 400 is mounted on the vibration energy blocking device constituted by these 1 st and 2 nd linear movement mechanisms. Thus, when an earthquake occurs, the transmission of seismic energy to the display stand 400 is blocked by the vibration energy blocking device, preventing the displayed article 300 from tipping over.

A side cover as described below, which is a shield of the vibration energy blocking device, is attached around the vibration isolation stage 500. Since the 1 st linear movement mechanism is located below the 2 nd linear movement mechanism, the side covers 152 and 154 are attached to the lower portion of the vibration isolation table 500. Since the 1 st linear movement mechanism is movable in the left-right direction (Y direction), the front surface and the not-shown rear surface side cover 152 are fixed. The side covers 154 on the right side and the left side, not shown, are suspended so as to be rotatable about an axis of an upper portion of the side cover 154.

Since the 2 nd linear motion mechanism is located above the 1 st linear motion mechanism, the side covers 156 and 158 are attached to the upper portion of the vibration isolation table 500. Since the 2 nd linear movement mechanism is movable in the front-rear direction (X direction), the front surface and the not-shown rear surface side cover 156 are suspended rotatably about the axis of the upper portion of the side cover 156. The side cover 158 is fixed to the right side surface and the left side surface, not shown.

Even in the vibration isolation table of embodiment 2 shown in fig. 10, the swingable side covers operate in the same manner as the side covers in embodiment 1 described above, and the same effects as those of the vibration isolation table of embodiment 1 can be obtained.

Example 3

Fig. 11 and 12 show an embodiment in which the vibration isolation effect is further improved by making the movement of the side cover gentle. This embodiment is different from the embodiments shown in fig. 4, 5, 6, and the like in that the side cover 132 has a roller 134 as a rotating member at a lower end portion. The roller 134 is rotatably supported on the inner surface side of the side cover 132 about a horizontal axis. The roller 134 is located at a position that can rotate on the upper surface of the outer rail 106 of the slide rail 105 in the longitudinal direction of the side cover 132 when the vibration isolation device provided in the vibration isolation table 100 performs the vibration isolation operation.

In fig. 11 and 12, only the left and right side covers 132 are shown, and the side covers 132 are suspended so as to be rotatable about an upper axis in a direction perpendicular to the paper surface of fig. 11 and 12 (hereinafter, this direction is referred to as the "front-rear direction"). A roller having the same structure as the roller 134 is supported by the side cover 132 in the front-rear direction. The roller of the front-rear direction side cover 132 is located at a position that can rotate on the upper surface of the outer rail 112 of the slide rail 110 in the longitudinal direction of the side cover 132 when the vibration isolation table 100 performs a vibration isolation operation.

More specifically, two slide rails 110 are provided as a pair, and the two pairs are located at both side edge portions of the 1 st movable stage 108. The outer rails 112 of the respective pairs of slide rails 110 have both side edge portions that stand upright and are bent inward from each other, and have flat upper end surfaces. The position of the roller with respect to the side cover 132 is determined so that the roller of the side cover 132 in the front-rear direction contacts the upper surface 115 (see fig. 7) of the outer rail 112 adjacent to each other. When the vibration isolation table 100 performs the vibration isolation operation, the side cover 132 is pushed and swung from the inside to the outside, and the rollers rotate on the upper surface 115 of the outer rail 112.

The rollers 134 of the left and right side covers 132 shown in fig. 11 and 12 rotate on the upper surface of the slide rail 105 constituting the 1 st linear movement mechanism. The slide rails 105 are also paired with two slide rails 110, and two pairs of slide rails 105 are disposed on both side edge portions of the bottom plate 104. The rollers 134 rotate on the upper surfaces of the outer rails 106 that constitute the two pairs of slide rails 105 and are adjacent to each other.

According to the embodiment shown in fig. 11 and 12, when the side cover 132 is pushed from the inside to the outside and swings during the vibration isolation operation of the vibration isolation table 100, the roller 134 rotates on the upper surface of the outer rail constituting the slide rail. The rolling resistance of the roller 134 at this time is smaller than the resistance when the side cover 132 slides on the rail surface, and the vibration isolation effect is improved.

As can be seen from fig. 12, when the rollers 134 rotate on the upper surface of the outer rail, the lower end of the side cover 132 is lifted above the upper surface of the outer rail. The design of the vibration isolation table is facilitated without the restriction that the coil spring 140, the spring holder 142, the holding member 144, and the like constituting the origin return device must be lower than the upper surface of the rail.

Example 4

Figure 13 shows yet another embodiment of the seismic isolation stage of the present invention. In fig. 13, side covers 232 are provided at four side edges of the table 224. Although not specifically shown in fig. 13, each side cover 232 is rotatably suspended from a side edge portion of the vibration isolation table about an axis of an upper portion of the side cover. Each side cover 232 is pushed and swung from the inside to the outside when performing the vibration isolation operation, that is, when the vibration energy isolation device performs the vibration energy isolation operation.

Each side cover 232 is a quadrangular prism-shaped member having a length and a vertical width required for shielding the vibration energy blocking apparatus. Each side cover 232 slides while contacting the upper surface of the vibration energy blocking device, specifically, the upper surface of the outer rail constituting the slide rail during the vibration isolation operation. Each side cover 232 is made of a slippery material such as polypropylene, polycarbonate, or the like.

According to the embodiment shown in fig. 13, the sliding resistance between the side cover 232 and the upper surface of the vibration energy blocking device is reduced during the vibration isolation operation, and accordingly, the vibration isolation effect generated by the vibration energy blocking device is improved.

A modification of the embodiment shown in fig. 13 is shown below.

The side cover 232 as a whole need not be made of a material that is easily slidable, as long as at least a portion that is in contact with and slides on the vibration energy blocking device is made of a material that is easily slidable.

In the example shown in fig. 13, the mounting table 224 is covered with the decorative cover 226, but the decorative cover 226 may be omitted.

In the case where the mounting base 224 is covered with the decorative cover 226, the side cover 232 may be rotatably supported on the peripheral edge portion of the decorative cover 226.

Other modifications

The vibration isolation table has any plane shape and size. The planar shape may be rectangular. The planar shape of the mounting table may be circular, elliptical, or any other shape. The present invention can be appropriately modified in design as long as the technical features of the present invention in each claim are satisfied.

Claims (8)

1. A seismic isolation station, comprising: a base member and a vibration energy blocking device mounted on the base member and blocking transmission of vibration energy on the base member side, wherein a vibration isolation object is placed on an upper side of the vibration energy blocking device,

a side cover having a screen to become the vibration energy blocking means,

the side cover is rotatably suspended from a side edge portion of the vibration isolation table about an axis of an upper portion of the side cover, and is pushed and swung from an inner side to an outer side when the vibration energy isolation device performs the vibration energy isolation operation.

2. A seismic isolation station, comprising: a base member and a vibration energy blocking device attached to the base member and blocking transmission of vibration energy on the base member side, wherein a mounting table on which a vibration isolation target object is mounted is provided above the vibration energy blocking device, and the vibration isolation table is characterized in that,

a side cover having a screen to become the vibration energy blocking means,

the side cover is rotatably suspended from a side edge portion of the vibration isolation table about an axis of an upper portion of the side cover, and is pushed and swung from an inner side to an outer side when the vibration energy isolation device performs the vibration energy isolation operation.

3. A seismic isolation stage according to claim 1 or 2,

and the side mask is contacted with the vibration energy isolation device and moves when the vibration energy isolation device performs vibration energy isolation action.

4. A seismic isolation stage according to claim 1 or 2,

and the side mask is contacted with the vibration energy isolation device and moves while sliding when the vibration energy isolation device performs vibration energy isolation action.

5. A seismic isolation stage according to claim 4,

at least the portion of the side cover which comes into contact with the vibration energy blocking device and moves while sliding is made of an easily slidable member.

6. A seismic isolation stage according to claim 1 or 2,

the side cover is provided with a rotating part which is contacted with the vibration energy isolation device and rotates.

7. A seismic isolation stage according to claim 1 or 2,

the vibration energy blocking device is configured to have a linear movement mechanism mainly including a rail.

8. The vibration isolation table of claim 2,

the placing table has a space capable of accommodating an article.