JP2000193023A - Guide unit with two axes - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guide unit with two axes having a base isolation function formed that the less number of installations will suffice even in a case of a structure such as a detached house. SOLUTION: A first slide member 20 slidable over an axially extending first pedestal 10 fixed on the ground side is held by a holding member 30. A second pedestal 40 fixed in a manner to cross the first pedestal with a support surface positioned in a down state is arranged on the structure to be base- isolated side in a spot corresponding to the first pedestal. A second slide member 50 slidable over the surface of the second pedestal is held by a second holding member 60. The first and second holding members are integrally formed with the first slide member positioned in a down state and the second slide member in an upward state and besides in an arrangement relation where the members orthogonally cross each other. This constitution prevents horizontal vibration, exerted on the first and second pedestals, from transmission to a structure to be base-isolated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation device, and more particularly to a two-axis guide unit having a seismic isolation function for preventing a detached house or the like from being collapsed by an earthquake.

[0002]

2. Description of the Related Art Hitherto, as a seismic isolation device for a large structure such as a building, a laminated rubber formed by laminating a disk-shaped iron plate and rubber has been known. However, such a laminated rubber is suitable for a structure having a large weight, but is not suitable for a structure that is lighter than a building such as a detached house.

[0003] Therefore, as a seismic isolation device for a detached house, a device using a ball bearing is provided. This is configured by providing a bearing with a ball bearing between a house and its foundation. A plurality of ball bearing bearings are provided. The base portion is provided with a receiving tray for receiving a rigid sphere in the ball bearing, and the upper surface of the receiving tray is formed in a concave shape.

[0004] Such a seismic isolation device for a detached house can be used in all horizontal directions because it is a point supported by a sphere. In addition, since the upper surface of the receiving tray is formed in a concave shape, there is an advantage that the sphere easily returns to the original position after the convergence of the earthquake, and therefore the house also returns to the original position.

[0005]

However, although the sphere has rigidity, since it is supported at one point, damage such as chipping is likely to occur. In order to prevent this, it is necessary to reduce the load per bearing part by the ball bearing. This means that the number of bearings by ball bearings increases.

It is an object of the present invention to provide a two-axis guide unit having a seismic isolation function that requires only a small number of installations even for a structure such as a detached house.

Another object of the present invention is to provide a two-axis guide unit having excellent durability.

[0008]

According to the present invention, there is provided a first pedestal fixed to a ground side and extending in a uniaxial direction;
A first sliding member slidable in the uniaxial direction on a pedestal, a first holding member capable of holding the first sliding member and movable in the uniaxial direction together with the first sliding member, 1
A second pedestal fixed to the seismic-isolated structure side corresponding to the pedestal so as to intersect with the first pedestal, and extending in a direction perpendicular to the uniaxial direction with the receiving surface facing downward; A second sliding member slidable on the surface of the second pedestal in the right angle direction, and a second holding member holding the second sliding member and movable in the right angle direction together with the second sliding member. And the first holding member and the second holding member,
The first sliding member faces downward and the second sliding member faces upward and is integrated so as to intersect at a right angle, so that the first sliding member acts on the first and second pedestals. A biaxial guide unit is provided which prevents horizontal vibration from being transmitted to the seismic isolated structure.

According to a first aspect of the present invention, the first
The supporting surface of the pedestal has a partially cylindrical shape that is convex downward, while the receiving surface of the second pedestal has a partially cylindrical shape that is convex upward.

In the first embodiment, at least one of the first and second sliding members is in contact with a supporting surface of the first pedestal and a receiving surface of the second pedestal, respectively.
It may be constituted by one slide body.

In the first embodiment, the first embodiment
And the second sliding member may each comprise at least one bearing body that contacts a support surface of the first pedestal and a receiving surface of the second pedestal.

[0012] In the first embodiment, the above-mentioned first embodiment is further provided.
A groove is formed on both side surfaces of the pedestal and the second pedestal so as to draw a locus having the same diameter as the contour of the partial cylindrical surface, and the first pedestal is formed on the first holding member. A leg extending downwardly along both side surfaces of the base and a first locking member provided on the leg and entering the groove, and the second pedestal is provided on the second holding member. And a second locking member provided on the leg and entering the groove is provided on the first holding member. The detachment from the pedestal and the detachment of the second holding member from the second pedestal are prevented.

According to a second aspect of the present invention, the first
The support surface of the pedestal is tapered so that it rises from the intermediate portion toward both sides in the uniaxial direction with the intermediate portion as a boundary, and the receiving surface of the second pedestal with the intermediate portion as a boundary. The intermediate portion is tapered so as to become lower toward both sides in the perpendicular direction.

Also in this second embodiment, the first and second sliding members respectively come from one slide body which comes into contact with the support surface of the first pedestal and the receiving surface of the second pedestal. It may be made to consist of.

In the second embodiment, the first embodiment
And each of the second sliding members may be formed of one bearing body that contacts a support surface of the first pedestal and a receiving surface of the second pedestal.

In the second embodiment, the first type
A groove is formed on each of both sides of the pedestal and the second pedestal so as to draw the same locus as the contour of the tapered shape, and both sides of the first pedestal are formed on the first holding member. And a first locking member provided on the leg and entering the groove is provided on both sides of the second pedestal. And a second locking member provided on the leg portion and entering the groove, the first holding member from the first pedestal. The detachment and the detachment of the second holding member from the second pedestal are prevented.

According to a third aspect of the present invention, the first
The support surface of the pedestal and the receiving surface of the second pedestal are respectively
Made flat.

Also in this third embodiment, at least one of the first and second sliding members is in contact with the supporting surface of the first pedestal and the receiving surface of the second pedestal, respectively.
It may be constituted by one slide body.

In the third embodiment, the first embodiment
And the second sliding member may each comprise at least one bearing body that contacts a support surface of the first pedestal and a receiving surface of the second pedestal.

In the third embodiment, further, the first
A groove is formed in both sides of the pedestal and the second pedestal along the uniaxial direction and the perpendicular direction, respectively, and the first holding member is formed along both sides of the first pedestal. A leg extending downwardly and a first locking member provided on the leg and entering the groove, and the second holding member is provided along both side surfaces of the second pedestal. By providing a leg extending upward and a second locking member provided on the leg and entering the groove, the first holding member is disengaged from the first pedestal and the The second holding member is prevented from coming off the second pedestal.

In any case, it is preferable that the bearing body is a needle bearing.

The bearing body may be composed of at least two needle bearings. In this case, these two needle bearings are connected by connecting plates at both ends thereof, and the first holding member has two connecting members. The two needle bearings are held by a first shaft that penetrates the connecting plate and is attached to the first holding member.
The two needle bearings are configured to be held by a second shaft that penetrates the two connecting plates and is attached to the second holding member.

In either case, third and fourth sliding members are provided on the legs of the first and second holding members so as to be in contact with the side surfaces of the first and second pedestals, respectively. You may be.

In any of the embodiments, the first
And the second pedestal has a pedestal body having a polygonal or circular cross section and a mounting portion for fixing the pedestal body to the ground side, and the groove is provided between the pedestal body and the mounting portion. May be provided.

Further, in each case, the first
And the second pedestal has a pedestal main body having an H-shaped cross section and a mounting portion for fixing the pedestal main body to the ground side, and having the groove between the pedestal main body and the mounting portion. But it is good.

Furthermore, the side surfaces of the first and second pedestals abut against the third and fourth sliding members, respectively, and the third and fourth sliding members are connected to the first and second sliding members, respectively.
And, by restricting the movement of the second pedestal as it approaches the end, a tapered portion for restricting the movement of the first and second holding members may be formed.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment in which a two-axis guide unit according to the present invention is applied as a seismic isolation device for a detached house will be described with reference to FIGS.
In FIG. 1, the guide unit with two axes is fixed to the ground side and extends in a uniaxial direction (hereinafter, referred to as an X axis direction), and slides on the first pedestal 10 in the X axis direction. Corresponds to the first sliding member 20 and the first holding member 30 which holds the first sliding member 20 and is movable in the X-axis direction together with the first sliding member 20, and the first pedestal 10. X, with the receiving surface facing downward, is fixed to the seismically isolated structure at the place where
A second pedestal 40 extending in a direction perpendicular to the axial direction (hereinafter, referred to as a Y-axis direction); a second sliding member 50 capable of sliding the surface of the second pedestal 40 in the Y-axis direction; Sliding member 5
0, and a second holding member 60 that can move in the Y-axis direction together with the second sliding member 50.

First holding member 30 and second holding member 60
Means that the first sliding member 20 faces downward and the second sliding member 5
It is integrated so that 0 is upward and crosses at right angles.

With this configuration, as will be described in detail later, it is possible to prevent the horizontal vibration acting on the first and second pedestals 10 and 40 from being transmitted to the detached house. it can.

In the first embodiment, the support surface 10-1 of the first pedestal 10 has a partially cylindrical shape that is convex downward, and the receiving surface 40-1 of the second pedestal 40 has an upper surface. It has a partially cylindrical surface shape that is convex.

The first sliding member 20 comprises two needle bearings 21a and 21b which are in line contact with the support surface 10-1 of the first pedestal 10. Similarly, the second sliding member 50 includes two needle bearings 51a and 51b that are in line contact with the receiving surface 40-1 of the second pedestal 40. As for the first sliding member 20, these two needle bearings 21a, 21b are connected at both ends by connecting plates 22, 23, respectively, and penetrate through the two connecting plates 22, 23, and the first holding member 20. Is configured to receive a load from above by a first shaft body 24 penetrating through. The load acting on the first shaft body 24 is reduced by two needle bearings 21a and 21b.
Is distributed to 1/2. The connecting plates 22 and 23 are
Is rotatable with respect to the shaft body 24. Also, the first
A screw is cut at both ends of the shaft body 24, and the screw portion protrudes from the side surface of the first holding member 20, so that it is fastened and fixed by the nut 25. In addition, one needle bearing may be sufficient.

The same applies to the second sliding member 50, in which the two needle bearings 51a and 51b are connected by connecting plates 52 and 53, and penetrate the two connecting plates 52 and 53 while the second holding member 60 is connected. It is configured to receive a load from above by the penetrating second shaft 54. That is, the load acting through the second pedestal 40 is received through the two needle bearings 51a and 51b. The connecting plates 52 and 53 are rotatable with respect to the second shaft 54. Also, both ends of the second shaft body 54 are threaded, and the threaded portion protrudes from the side surface of the second holding member 60, so that the nut 55
To secure.

Grooves 11 and 41 are formed on both sides of the first pedestal 10 and the second pedestal 40 so as to draw a locus having the same diameter as the contour of the partial cylindrical surfaces 10-1 and 40-1. I have. On the other hand, the first holding member 30 is provided with legs 31, 31 extending downward along both side surfaces of the first pedestal 10, and two firsts which enter the groove 11 into the inner wall of the leg 31. Are provided. The locking member uses the roller 32 here, but may be a hook-shaped member. This is the same in the second and third embodiments described later. Two guide rollers 33 that contact the side surface of the first pedestal 10 and guide the movement of the first holding member 30 are also provided on the inner wall of the leg 31. The rotation axis of the roller 32 is perpendicular to the inner wall of the leg 31, while the rotation axis of the guide roller 33 is parallel to the inner wall of the leg 31. Similarly, the second holding member 60 is provided with legs 61, 61 extending upward along both side surfaces of the second pedestal 40, and the inner wall of the leg 61 has two rollers that enter the groove 41. 6
2 and two guide rollers 63 that contact the side surface of the second pedestal 40 and guide the movement of the second holding member 60 are provided. The rollers 32 and 62, the guide roller 6
2, 63 may be one.

The rollers 32 and 62 are respectively provided with first and second rollers.
Not only guide the movement of the holding members 30, 60, but also the first and second pedestals 1 of the first and second holding members 30, 60.
This is for preventing deviation from 0 and 40.

The seismic isolation operation of the two-axis guide unit having the above configuration will be described with reference to FIG. As described above, the first pedestal 10 is fixed to the ground side, and the second pedestal 40 is fixed to the detached house side. That is, the first pedestal 10 is fixed to a base portion (usually made of concrete) of a detached house, and the second pedestal 40 is fixed to a column or the like at the lower floor of the detached house. It is a precondition that the foundation of the detached house is mechanically separated from the support at the lower floor of the detached house.

In such a detached house, when the ground vibrates horizontally due to an earthquake, the first pedestal 10 reciprocates in the X-axis direction due to the X-axis component of the vibration, but the two needle bearings 21a, 21b Slides (rolls) on the support surface 10-1 of the first pedestal 10, whereby the first
Of the holding member 30 hardly moves in the X-axis direction. This means that the vibration in the X-axis direction is prevented from being transmitted to the detached house side. On the other hand, the second pedestal 40 reciprocates in the Y-axis direction together with the first pedestal 10 due to the Y-axis component of the vibration.
The second holding member 60 hardly moves in the Y-axis direction because the a and 51b slide on the receiving surface 40-1 of the second pedestal 40. This means that the vibration in the Y-axis direction is prevented from being transmitted to the detached house. The combined action of preventing the transmission of the vibration in the X-axis direction and the prevention of the transmission of the vibration in the Y-axis direction allows the two-axis guide unit to contribute to preventing the transmission of the vibration in the horizontal direction in all directions. Can be. Moreover, the first sliding member 20 automatically returns to the position shown in FIG. 4 when the earthquake ends because the support surface 10-1 has a partial cylindrical surface shape. As a result, the detached house will not be displaced after the earthquake.

By the way, the period of the first holding member 30 reciprocating on the support surface 10-1 can be determined by the size of the radius R of the support surface 10-1. This cycle is
Usually on the order of seconds, for which the radius R is about 1500
(Mm).

Next, the operation of the two needle bearings 21a and 21b for sliding operation will be described with reference to FIG.
The axis of the first shaft body 24 has two needle bearings 2
It is an intermediate point of a line segment connecting the rotation axes of 1a and 21b, and is located on a line segment perpendicular to the line segment. Support surface 10-1
The radius of the first shaft 34 from the axis of the first shaft body 34 to the support surface 10-1.
Is assumed to be L1, the first sliding member 20 apparently has a radius R1 (R = R) with a point where the first shaft body 24 is separated from the center of the radius R by the distance L1 as a center point.
The rotation of 1) is performed. As a result, even if the two needle bearings 21a and 21b are integrally moved by being connected by the two connecting plates 22 and 23 (only 23 is shown), the sliding is smoothly performed, and the problem occurs. Will not occur.

On the other hand, when there is vibration in the vertical direction with respect to the ground, the first holding member 30 is disengaged from the first pedestal 10 or the second holding member 60 is moved to the first pedestal 4.
It is possible that the value deviates from zero. But the first
With respect to the holding member 30, the roller 32 is inserted into the groove 11 of the first pedestal 10, so that the separation is prevented.
Of the pedestal 40 is prevented from coming off.

Usually, several such two-axis guide units are provided for one detached house. Therefore, for example, when the total weight of a detached house is 100 (t),
When five biaxial guide units are installed, an average load of 20 (t) is applied to each biaxial guide unit. In this case, if the number of the needle bearings is two, it is sufficient that the needle bearing has a withstand load of 10 (t), and such a needle bearing can be sufficiently used by a commercially available needle bearing.

As is apparent from FIGS. 1 and 4, the first pedestal 10, the first sliding member 20, and the first holding member 3 are provided.
0, the second pedestal 40 and the second sliding member 5
The combination of the 0 and the second holding member 60 is exactly the same, and is merely combined in an arrangement relationship shifted by 90 degrees. Therefore, the above components may be made exactly the same, and the first holding member 30 incorporating the first sliding member 20 and the second holding member 60 incorporating the second sliding member 50 are welded or the like. May be fixed integrally.

A modification of the first embodiment will be described with reference to FIG. In this modification, at least the first and second sliding members 20 and 50 are in surface contact with the support surface 10-1 of the first pedestal 10 and the receiving surface 40-1 of the second pedestal 40, respectively. The third embodiment is different from the first embodiment in that each of the slide members 26 and 56 is provided, and only one roller 32, 62 and one guide roller 33, 63 are provided. The slide members 26 and 56 are respectively provided with the first and second shafts 2.
It is pivotally supported at 4 and 54. Of course, the slide members 26 and 56 may be fixed. Except for these structures, it is exactly the same as the first embodiment. The slide members 26 and 56 are preferably made of a material having a small friction coefficient, such as Teflon or another hard resin material. Of course, the number of the slide members 26 and 56 may be two or more. The support structure in this case is the first
This is the same as the embodiment.

In this modification, when the seismic intensity of the earthquake is small, the sliding members 26 and 56 do not slide on the supporting surface 10-1 and the receiving surface 40-1 due to the friction. However, when the seismic intensity increases, the sliding members 26 and 56 slide on the support surface 10-1 and the receiving surface 40-1, thereby preventing horizontal vibration transmission.

With reference to FIG. 7, a second embodiment of the present invention will be described. This second embodiment is similar to the first pedestal 1
The support surface 10-2 is tapered so as to increase at an angle α from the intermediate portion toward both sides in the X-axis direction from the intermediate portion. Similarly, the receiving surface 40-2 of the second pedestal 40 is also separated from the intermediate portion by Y
It is tapered so that it becomes lower at an angle α toward both sides in the axial direction. In the second embodiment, the first and second sliding members 20 and 50 are each formed of one needle bearing 21 and 51. The shaft centers of the needle bearings 21 and 51 penetrate the first and second holding members 30 and 60, respectively, and are fastened and fixed by nuts 25 at the penetrating portions.

On both side surfaces of the first pedestal 10 and the second pedestal 40, grooves 12 and 42 are formed so as to follow the same locus as the tapered contour. One roller 32 is provided on the inner wall of the leg 31 on both sides of the first holding member 30 so as to enter the groove 12, and rolls along the side surface of the first pedestal 10. One guide roller 33 is provided. Similarly, the inner walls of the leg portions 61 on both sides of the second holding member 60 are also arranged so that
The rollers 32 are provided, and one guide roller 33 is provided so as to roll along the side surface of the first pedestal 10.

The structure other than the above structure is exactly the same as that of the first embodiment. And the seismic isolation operation is almost the same as that of the first embodiment, but the second embodiment is different from the first embodiment in that after the earthquake is over,
It is excellent in that the needle bearing 21 easily returns to the position shown in FIG.

Also in the second embodiment, the support surface 10-2 depends on the taper angle α of the support surface 10-2.
The cycle of the first holding member 30 that reciprocates on the second can be determined. This period is also usually on the order of a few seconds, for which the angle α is about 1 to 1.5 °.

As described in the first embodiment, when the total weight of a detached house is 100 (t) and five guide units with two axes according to the second embodiment are installed,
One biaxial guide unit, that is, the needle bearing 21, receives an average load of 20 (t). However, such a needle bearing is also commercially available and has no problem.

As a modification of the second embodiment, one slide member as described with reference to FIG. 6 may be used instead of the needle bearings 21 and 51.

Referring to FIG. 8, a third embodiment of the present invention will be described. This third embodiment is similar to the first pedestal 1
The 0 support surface 10-3 and the receiving surface 40-4 of the second pedestal 40 are respectively flat surfaces. Therefore, the grooves 13 and 43 provided on both side surfaces of the first pedestal 10 and the second pedestal 40 are also straight lines. The other points are exactly the same as the first embodiment.

In the third embodiment,
Since the supporting surface 10-3 is a flat surface, if the sliding member 20 moves on the supporting surface 10-3 during an earthquake, the sliding member 10-3 does not automatically return to the original position in FIG. Therefore, since the detached house is displaced, in this embodiment, when the displacement occurs, it is necessary to return the detached house to its original position using a tool such as a jack.

As a modification of the third embodiment, the needle bearings 21a, 21b, 51a, 51
Instead of b, one slide member as described in FIG. 6 may be used. Further, the rollers 32 and 52 and the guide rollers 33 and 63 may be one by one.

The first and second pedestals may have various shapes such as a polygonal cross section or a circular cross section. Then, the structures of the first and second holding members are changed accordingly. A second modification of the first embodiment shown in FIGS. 1 and 2 will be described with reference to FIGS.
The first pedestal 10 is connected to a pedestal body 15-1 having a triangular cross section.
And an attachment portion 1 for fixing the same to the foundation portion side of the ground.
5-2. Thereby, the base body 15-
A wide groove 11 'similar to the groove 11 in the first embodiment is formed between the groove 1 and the mounting portion 15-2. The configuration and holding structure of the first sliding member 20 are exactly the same as those shown in FIG. In the present embodiment, the guide roller 33 provided on the inner wall of the leg 31 also serves as a locking member for preventing detachment. The above structure includes a second pedestal,
The same applies to the second sliding member and the second holding member.

It is needless to say that such a modified example is applicable to the second and third embodiments described above. That is, when applied to the second and third embodiments, only the shape of the receiving surface of the pedestal main body 15-1 is changed. Of course, when applied to the second embodiment, the first sliding member 20 is constituted by one needle bearing.

A third modification of the first embodiment shown in FIGS. 1 and 2 will be described with reference to FIGS.
The first pedestal 10 is connected to a pedestal body 16-1 having a square cross section.
And an attachment portion 1 for fixing the same to the foundation portion side of the ground.
6-2. Thereby, the base body 16-
A wide groove 11 'similar to the groove 11 in the first embodiment is formed between the groove 1 and the mounting portion 16-2. In this example,
Since two receiving surfaces of the first sliding member 20 can be formed, two sets of the first sliding member 20 are also provided so as to form an angle of 90 °. The holding structure of the first sliding member 20 includes a first shaft 24
Is fixed to the inner wall of the first holding member 30, and the other end is passed through the leg 31 of the first holding member 30 and fastened and fixed by the nut 25. Also in this example, the guide roller 33 provided on the inner wall of the leg portion 31 also serves as a locking member for preventing detachment. The above structure is exactly the same for the second pedestal, the second sliding member, and the second holding member.

It is needless to say that such a modified example is also applicable to the above-described second and third embodiments. When applied to the second and third embodiments, the shape of the pedestal main body 16-1 merely changes to a V-shaped and a flat shape with a gentle angle, respectively. Then, when applied to the second embodiment, the first sliding member 20 is constituted by one needle bearing.

A fourth modification of the first embodiment shown in FIGS. 1 and 2 will be described with reference to FIGS.
The first pedestal 10 is provided with a pedestal body 17-1 having a circular cross section,
Attachment part 17- for fixing this to the foundation side of the ground
And 2. Thereby, the groove 11 in the first embodiment is provided between the pedestal main body 16-1 and the mounting portion 16-2.
A wide groove 11 'similar to the above is formed. This example can be said to be a modification of the third modification. That is,
In the third modified example, since the shape of the pedestal main body 16-1 is quadrangular, the two first sliding members 20 are received by the two receiving surfaces. On the other hand, in the present example, since the cross section is circular, the two first sliding members 20 that are the same as those in the third modification are attached to the pedestal body 17
In the case of -1, the structure is substantially supported at two points in the form of point contact. The guide roller 33 is also the same as that of the third modified example, and makes point contact with the pedestal main body 17-1 in the groove 11 'to fulfill the function of guiding the first holding member 30 and the first roller.
Of the pedestal 10 is prevented.

The above structure is exactly the same for the second pedestal, the second sliding member, and the second holding member. It is needless to say that this modified example is also applicable to the second and third embodiments described above. When applied to the second and third embodiments, the base body 17-1
Only change to a V-shape with a gentle angle and a straight-line shape, respectively. When applied to the second embodiment, the first sliding member 20 is constituted by one needle bearing. The pedestal main body 17-1 may be realized by a circular pipe.

Referring to FIGS. 15 and 16, a fifth modification of the first embodiment shown in FIGS. 1 and 2 will be described.
The first pedestal 10 is provided with a pedestal body 18-1 having an H-shaped cross section,
Attachment section 18 for fixing this to the foundation side of the ground
And 2. Such a pedestal body 18-1 includes:
It can be obtained using a so-called H-shaped steel. Thereby, a wide groove 11 'similar to the groove 11 in the first embodiment is formed between the pedestal main body 18-1 and the mounting portion 18-2. In this example, the configuration and holding structure of the first sliding member 20 are exactly the same as those shown in FIG. In the present embodiment, the roller 32 provided on the inner wall of the leg 31 enters the lower surface of the lower plate of the pedestal body 18-1 and serves as a locking member for preventing slippage. Of course, the roller 32 may enter the lower surface of the upper plate of the pedestal body 18-1. The above structure is exactly the same for the second pedestal, the second sliding member, and the second holding member.

It is needless to say that such a modified example can be applied to the second and third embodiments described above. That is, when applied to the second and third embodiments, only the shape of the pedestal main body 18-1 is changed. When applied to the second embodiment, the first sliding member 20 is
It consists of two needle bearings.

Incidentally, in the above-described embodiment or its modification, the guide rollers 33,
Instead of 63, a slide member may be used. When a material having a certain coefficient of friction is used as such a slide member, for example, in the case of the first embodiment shown in FIG. 2, the first base 10 and the first holding member 30 Between the second pedestal 40 and the second holding member 60
And a frictional force acts between them. Such frictional force has an effect of preventing the house from shaking when wind pressure acts on the wall of the house.

FIG. 17 shows an example in which the first pedestal 10 is improved in addition to the above-mentioned slide member. That is, the first pedestal 1 of the first embodiment shown in FIG.
0 and the first holding member 30 will be described.
A slide member 35 is provided on the inner wall of the leg 31 (both not shown) of the holding member 30. On the other hand, the side surface of the first pedestal 10 abuts on the slide member 35, and the slide member 35 moves together with the first holding member and regulates the movement thereof as it approaches the end of the first pedestal 10. As a result, the tapered portion 15 that restricts the movement of the first holding member is formed. For this purpose, the tapered portion 15 may be formed so that the middle portion of the first pedestal 10 is the lowest, and becomes higher as approaching the end portion. In particular, in the first embodiment, as the first holding member 30 approaches the end of the first pedestal 10, the slide member 35 not only moves horizontally but also moves upward.
It is necessary to make the angle 5 larger than this moving amount.
This is not necessary when the present example is applied to the third embodiment, but is the same when applied to the second embodiment. In addition, such a tapered portion is provided in the first pedestal 10.
May be formed in the width direction. That is, the thickness of the first pedestal 10 in the width direction is the smallest at the intermediate portion, and the thickness increases as approaching the end portion, whereby the tapered portion can be formed.

Although the present invention has been described with reference to the three embodiments and various modifications thereof, the present invention is not limited to these examples, and various modifications are possible. For example, it is easy to use a ball bearing instead of a needle bearing, or to connect two connecting plates (for example, 22 and 23) with a connecting member to be integrated.

[0064]

As described above, the two-axis guide unit according to the present invention receives a load by line contact or surface contact even in a structure having a large load, such as a detached house, and thus has a high durability. It is highly susceptible to damage such as chipping. Therefore, it is possible to reduce the number of accidents caused by damage to the load receiving portion, and it is possible to reduce maintenance costs.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of a first embodiment of a biaxial guide unit according to the present invention.

FIG. 2 is a sectional view taken along line AA 'of FIG.

FIG. 3 is a sectional view taken along line BB ′ of FIG. 1;

FIG. 4 is an enlarged sectional view of FIG. 3 for explaining the seismic isolation operation according to the first embodiment.

FIG. 5 is a view for explaining a sliding operation of a sliding member 20 in FIG. 3;

FIG. 6 is a cross-sectional view showing a modification of the first embodiment when viewed from the same direction as in FIG. 4;

FIG. 7 is a cross-sectional view showing a second embodiment of a two-axis guide unit according to the present invention when viewed from the same direction as in FIG. 4;

FIG. 8 is a sectional view showing a third embodiment of a biaxial guide unit according to the present invention when viewed from the same direction as in FIG. 4;

FIG. 9 is a perspective view showing a second modification of the first embodiment with respect to a first pedestal.

FIG. 10 is a sectional view showing a second modification of the first embodiment with respect to a first pedestal and a first holding member.

FIG. 11 is a perspective view showing a third modification of the first embodiment with respect to a first pedestal.

FIG. 12 is a cross-sectional view showing a third modification of the first embodiment with respect to a first pedestal and a first holding member.

FIG. 13 is a perspective view showing a fourth modification of the first embodiment with respect to a first pedestal.

FIG. 14 is a cross-sectional view showing a fourth modification of the first embodiment with respect to a first pedestal and a first holding member.

FIG. 15 is a perspective view showing a fifth modification of the first embodiment with respect to a first pedestal.

FIG. 16 is a sectional view showing a fifth modification of the first embodiment with respect to a first pedestal and a first holding member.

FIG. 17 shows the first pedestal and the first pedestal in the first embodiment.
FIG. 15 is a perspective view for explaining a further improved example added to the holding member of FIG.

[Explanation of symbols]

Reference Signs List 10 first pedestal 10-1, 10-2, 10-3 support surface 11, 12, 13, 41, 42, 43 groove 20 first sliding member 21, 21a, 21b, 51, 51a, 51b needle bearing 22 , 23, 52, 53 Connecting plate 24 First shaft 25 Nut 30 First holding member 31, 61 Leg 32, 62 Roller 33, 63 Guide roller 40 Second pedestal 50 Second sliding member 54 Second Shaft 60 of the second holding member

 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 3J048 AA07 BG02 BG04 DA01 EA38 3J104 AA15 AA16 AA23 AA24 AA33 AA34 AA35 AA63 AA67 AA69 AA74 AA76 AA77 AA78 BA05 BA41 BA69 BA70 DA03 DA14 DA16

Claims (30)

[Claims] 1. A first pedestal fixed to the ground side and extending in one axial direction, a first sliding member slidable in the one axial direction on the first pedestal, and holding the first sliding member. A first holding member movable in the uniaxial direction together with the first sliding member; and a first pedestal on a seismic-isolated structure side at a location corresponding to the first pedestal. A second pedestal that is fixed and extends in a direction perpendicular to the uniaxial direction with the receiving surface facing downward; a second sliding member slidable in the direction perpendicular to the surface of the second pedestal; And a second holding member movable in the right-angle direction together with the second sliding member, wherein the first holding member and the second holding member are connected to the first holding member. The sliding member is directed downward, and the second sliding member is directed upward, and the arrangement is such that they intersect at right angles. The two-axis guide is characterized by preventing the horizontal vibration acting on the first and second pedestals from being transmitted to the seismic isolated structure. unit. 2. The guide unit with two axes according to claim 1, wherein a support surface of the first pedestal is formed in a partially cylindrical shape that is convex downward, and a receiving surface of the second pedestal is convex upward. Characterized in that the guide unit has a partial cylindrical surface. 3. The guide unit with two axes according to claim 2, wherein the first and second sliding members respectively contact a support surface of the first pedestal and a receiving surface of the second pedestal. A biaxial guide unit comprising at least one slide body that performs the following operations. 4. The guide unit with a two-shaft according to claim 2, wherein the first and second sliding members contact a support surface of the first pedestal and a receiving surface of the second pedestal, respectively. A guide unit with two shafts, comprising at least one bearing member. 5. The guide unit with two shafts according to claim 4, wherein the bearing body is a needle bearing. 6. The guide unit with two shafts according to claim 4, wherein said bearing body comprises at least two needle bearings, and said two needle bearings are connected at both ends thereof by connecting plates, respectively, and said first bearing is connected to said first bearing. In the holding member, two needle bearings are held by a first shaft body that penetrates two connecting plates and is attached to the first holding member. In the second holding member, two needle bearings are connected. A second shaft penetrating the plate and attached to the second holding member;
A two-shaft guide unit, wherein two needle bearings are held. 7. The guide unit with two axes according to claim 2, wherein the first pedestal and the second pedestal are connected to each other.
On both sides of the pedestal, grooves are formed so as to draw a locus having the same diameter as the contour of the partial cylindrical surface, and the first holding member is formed along both sides of the first pedestal. A leg extending downward and a first locking member provided in the leg and entering the groove are provided, and the second holding member is provided along both side surfaces of the second pedestal. By providing an upwardly extending leg and a second locking member provided in the leg and entering the groove, the first holding member is disengaged from the first pedestal and A biaxial guide unit, wherein the second holding member is prevented from coming off the second pedestal. 8. The guide unit with a two-shaft according to claim 7, wherein the third holding member is in contact with the legs of the first and second holding members so as to contact the side surfaces of the first and second pedestals, respectively. And a fourth sliding member provided with a fourth sliding member. 9. The biaxial guide unit according to claim 8, wherein the first and second pedestals are respectively a pedestal body having a polygonal or circular cross section and a pedestal body for fixing the pedestal body to the ground side. A two-axis guide unit, comprising: a mounting portion; and the groove between the pedestal main body and the mounting portion. 10. The guide unit with two axes according to claim 8, wherein the first and second pedestals each have a pedestal main body having an H-shaped cross section and a mounting portion for fixing the pedestal main body to the ground side. Wherein the groove is provided between the pedestal main body and the mounting portion. 11. The two-axis guide unit according to claim 8, wherein the third and fourth sliding members abut on side surfaces of the first and second pedestals, respectively. The fourth sliding member regulates its movement as it approaches the ends of the first and second pedestals, thereby forming a tapered portion that regulates the movement of the first and second holding members. A guide unit with two axes, characterized in that: 12. The guide unit with a two-shaft according to claim 1, wherein the support surface of the first pedestal is tapered so that the support surface of the first pedestal rises from the intermediate portion toward both sides in the uniaxial direction at the intermediate portion. And a receiving surface of the second pedestal is tapered so that the receiving surface of the second pedestal becomes lower from the intermediate portion toward both sides in the perpendicular direction from the intermediate portion. Guide unit. 13. The biaxial guide unit according to claim 12, wherein said first and second sliding members are respectively
A two-axis guide unit, comprising a single slide body that comes into contact with the support surface of the first pedestal and the receiving surface of the second pedestal. 14. The biaxial guide unit according to claim 12, wherein the first and second sliding members are respectively
A two-shaft guide unit comprising a single bearing body that comes into contact with a support surface of the first pedestal and a receiving surface of the second pedestal. 15. The two-axis guide unit according to claim 14, wherein the bearing body is a needle bearing. 16. The biaxial guide unit according to claim 12, wherein both sides of the first pedestal and the second pedestal have the same locus as the contour of the tapered shape. A groove is formed so as to draw, and the first holding member has a leg extending downward along both side surfaces of the first pedestal, and a second groove provided on the leg and entering the groove. And a second locking member is provided on the second holding member, the second locking member extending upward along both side surfaces of the second pedestal and entering the groove. Thus, the first holding member is prevented from coming off the first pedestal and the second holding member is prevented from coming off from the second pedestal. 17. The guide unit with a two-shaft according to claim 16, wherein a third portion of the first and second holding members is in contact with side surfaces of the first and second pedestals, respectively. And a fourth sliding member provided with a fourth sliding member. 18. The guide unit with two axes according to claim 17, wherein the first and second pedestals are respectively
A biaxial, having a pedestal body having a polygonal or circular cross section and a mounting portion for fixing the pedestal body to the ground side, and having the groove between the pedestal body and the mounting portion. With guide unit. 19. The two-axis guide unit according to claim 17, wherein the first and second pedestals are respectively
A two-axis guide unit, comprising: a pedestal body having an H-shaped cross section; and a mounting portion for fixing the pedestal body to the ground side, wherein the groove is provided between the pedestal body and the mounting portion. . 20. The guide unit with two shafts according to claim 17, wherein the third and fourth sliding members abut on side surfaces of the first and second pedestals, respectively. The fourth sliding member regulates its movement as it approaches the ends of the first and second pedestals, thereby forming a tapered portion that regulates the movement of the first and second holding members. A guide unit with two axes, characterized in that: 21. The biaxial guide unit according to claim 1, wherein the support surface of the first pedestal and the receiving surface of the second pedestal are flat surfaces. unit. 22. The guide unit with two shafts according to claim 21, wherein the first and second sliding members are respectively
A biaxial guide unit comprising at least one slide body that comes into contact with a support surface of the first pedestal and a receiving surface of the second pedestal. 23. The biaxial guide unit according to claim 21, wherein the first and second sliding members are respectively
A biaxial guide unit, comprising: at least one bearing member that comes into contact with a support surface of the first pedestal and a receiving surface of the second pedestal. 24. The guide unit with two shafts according to claim 23, wherein the bearing body is a needle bearing. 25. The guide unit with two shafts according to claim 23, wherein the bearing body comprises at least two needle bearings, and these two needle bearings are connected at both ends thereof by connecting plates, respectively.
In the first holding member, two needle bearings are held by a first shaft that penetrates the two connecting plates and is attached to the first holding member, and in the second holding member, A two-shaft guide unit, wherein two needle bearings are held by a first shaft that penetrates two connecting plates and is attached to the second holding member. . 26. The guide unit with two axes according to claim 21, wherein both sides of the first pedestal and the second pedestal are along the uniaxial direction and the right angle direction, respectively. The first holding member has a leg extending downward along both side surfaces of the first pedestal, and a first engaging member provided in the leg and entering the groove. A stop member is provided, and the second holding member includes
The first holding member is provided by providing a leg extending upward along both side surfaces of the second pedestal and a second locking member provided on the leg and entering the groove. A detachment from the first pedestal and a detachment of the second holding member from the second pedestal are prevented. 27. The guide unit with a two-shaft according to claim 26, wherein the third and third holding members have third legs so as to contact the side surfaces of the first and second pedestals, respectively. And a fourth sliding member provided with a fourth sliding member. 28. The guide unit with two axes according to claim 27, wherein the first and second pedestals are respectively
A biaxial, having a pedestal body having a polygonal or circular cross section and a mounting portion for fixing the pedestal body to the ground side, and having the groove between the pedestal body and the mounting portion. With guide unit. 29. The guide unit with two axes according to claim 27, wherein the first and second pedestals are respectively
A two-axis guide unit, comprising: a pedestal body having an H-shaped cross section; and a mounting portion for fixing the pedestal body to the ground side, wherein the groove is provided between the pedestal body and the mounting portion. . 30. The biaxial guide unit according to claim 27, wherein the third and fourth sliding members abut against side surfaces of the first and second pedestals, respectively. The fourth sliding member regulates its movement as it approaches the ends of the first and second pedestals, thereby forming a tapered portion that regulates the movement of the first and second holding members. A guide unit with two axes, characterized in that: