JP2001049896A - Cover for plain bearing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify mounting or demounting to or from a sliding bearing device, to easily eliminate dewcondensation even when condensate is generated by keeping air permeability on a sliding surface, ensuring sealing performance and to simply maintain the bearing device only by turning over a cover. SOLUTION: The cover for the plain bearing has an opening 25 being formed in a sheet shape covering a sliding surface 22 on the foundation 12 side for preventing the intrusion of water and dust to the sliding surface 22 while being fast stuck and fitted the periphery of a plain bearing body 21 on the building 10 side, is brought into approximately point-contact with the sliding surface 22 at projected points by forming a rear in a surface with projections, and has slits from the opening 25 to a periphery.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding bearing device provided with a sliding bearing at a lower part of a building, wherein the building is slidably supported via the sliding bearing by a sliding surface provided on a foundation. The present invention relates to a slip bearing cover used to cover the slip surface.

[0002]

2. Description of the Related Art In a building, a slide bearing device has been used as one of seismic isolation support devices for reducing vibration transmitted to a building by absorbing displacement caused by an earthquake or vibration. This sliding bearing device is provided with a sliding bearing at a lower part of a building, and is configured to support the building slidably via the sliding bearing by a sliding surface provided on a foundation. Further, the sliding bearing device may be used together with a seismic isolation supporting device capable of elastic displacement in the horizontal direction, such as a laminated rubber bearing device. In such an architectural sliding bearing device,
In order to keep the coefficient of friction constant, it is necessary to prevent water and dust from adhering to the slip surface as much as possible. For this reason, a waterproof / dustproof cover (slip support cover) is mounted.

[0003]

However, in the conventional sliding bearing cover, since almost the entire sliding bearing device is covered with a sheet from the outside, the sliding surface is covered with the sheet. There is a technical problem that the work for removing the cover may be improper due to the connection of the building, and the work for removing the cover at the time of maintenance requires a great deal of trouble. Furthermore, there is also a problem that it is difficult for moisture to escape when moisture enters and dew condensation occurs on the slip surface.

[0004] The present invention has been made in view of such technical problems, and an object of the present invention is to easily attach and detach a slide bearing device, to be excellent in handleability, and to secure a sealing property on a sliding surface. It is an object of the present invention to provide a sliding bearing cover that can easily release moisture even when dew condensation occurs by maintaining the air permeability of the bearing, and can easily perform maintenance of the bearing device just by turning the cover.

[0005]

According to the present invention, in order to achieve the above object, a sliding bearing is provided at a lower part of a building, and the building is slipped through the sliding bearing by a sliding surface provided on a foundation. In a sliding bearing device that supports the sliding surface, a sliding bearing cover used to cover the sliding surface, wherein a sheet-like cover that covers the sliding surface in order to prevent water or dust from entering the sliding surface. An opening is formed so as to closely fit with the periphery of the slip bearing body, and the back surface of the sheet is made into a surface with a projection, so that the slip surface makes substantially point contact with a projection point, and the sheet comes into contact with the sheet from the opening. It is characterized in that a cut reaching the periphery is formed.

According to the second to fifth aspects of the present invention, in addition to the above-described structure, the surface with protrusions on the back surface of the sheet is a surface having a large number of protrusions, and the surface with protrusions on the back surface of the sheet is an uneven surface. The sheet is made of a lightweight material such as urethane foam having no water permeability, or the sheet is formed by forming cuts from the opening of the sheet to the periphery at two substantially opposite locations. The above object is achieved by adopting a configuration that allows division.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an elevational view schematically showing a building using a sliding bearing device having a sliding bearing cover to which the present invention is applied, and FIG. 2 is a longitudinal sectional view showing the sliding bearing device in FIG. In FIG. 1, a building 10 is seismically isolated and supported by a plurality of slide bearing devices 20 and a plurality of laminated rubber bearing devices 30 installed under the floor. In the illustrated example, the underfloor is formed between the floor 11 of the building 10 and the upper surface of the foundation 12 built in the ground, and each slide bearing device 20 is connected to the lower end of the pillar 13 of the building and the foundation 12. Is configured between. In addition, the code | symbol 14 illustrates the ground.

The laminated rubber bearing device 30 is formed by integrally joining flange members 32 and 33 to upper and lower end surfaces of a cylindrical laminated rubber portion 31 in a fixed state. And a reinforcing plate such as a metal or hard plastic plate are alternately and integrally laminated. In the illustrated example, the laminated rubber bearing device 30 supports the building 10 in a seismically isolated state by fastening the upper and lower flange members 32 and 33 to the columns 13 and the foundation 12 of the building 10 with bolts and nuts. Installed with. Such a laminated rubber bearing device 30 has a high spring constant in the vertical direction and a low spring constant in the horizontal direction (horizontal direction), and the ratio of the vertical and horizontal spring constants is usually as large as 800 or more. Value. Such a laminated rubber bearing device is, for example,
JP-A-60-261845, JP-A-61-143
No. 40, JP-A-64-48950 and the like.

In FIG. 2, each of the slide bearing devices 20 includes
Slip support 2 provided at the lower end of pillar 13 of building 10
1 is configured to be supported on a sliding surface 22 provided on the foundation 12 so as to be able to slide (slide) in the horizontal direction. In the example shown in the figure, the slip surface 22 is formed by fixing a flat member 23 on the upper surface of the foundation 12 and finishing the smooth upper surface of the flat member 23 to a low friction surface. As the material of the flat plate member 23 forming the slip surface 22, a metal, a sintered alloy, a PTFE resin, or the like is used, and a material having a low friction coefficient having excellent smoothness and abrasion resistance is preferable. On the other hand, as the sliding surface (end surface member) of the sliding bearing member 21, a material having the same material as the flat plate member 23 and capable of obtaining an appropriate friction coefficient by combination with the sliding surface 22 is used.

[0010] In the slip bearing device 20, in order to keep the slip characteristics (seismic isolation characteristics) constant, the slip surface 2 is required.
It is required to prevent a change in the coefficient of friction due to the adhesion of moisture or dust to the surface 2 as much as possible. For this purpose, a cover 24 for sliding support for covering the sliding surface 22 is attached as shown in FIG. Have been. FIG. 3 is a perspective view showing the upper surface of the sliding bearing cover in FIG. 2, and FIG. 4 is a perspective view showing the back surface of the sliding bearing cover in FIG. 2 to 4, the sliding support cover 24 is provided with a sliding surface 22 for preventing water and dust from entering the sliding surface 22.
The sliding support cover 24 is tightly fitted to the inside (substantially in the center) of the sliding support cover 24 so as to secure waterproof and dustproof properties with the periphery of the sliding support body 21 on the building 10 side. A matching opening 25 is formed. The outer shape of the slide support cover 24 is slightly larger than the outer shape of the slide surface 22, and the shape is set to a desired shape such as a square or a circle in consideration of the shape of the slide surface 22.

The rear surface of the seat of the slide support cover 24 (the inner surface of the seat on the side of the slide surface 22) is a surface with a plurality of protrusions 26 formed thereon. It is configured so as to make contact in a substantially point contact state at the projection point (apex of the projection 26). Therefore, the use state of FIG. 1 and FIG. 2 (the state where the sliding surface is covered)
However, due to the point contact with the sliding surface 22, air permeability can be secured between the sliding surface 22 and, for example, even if dew condensation occurs on the sliding surface 22 due to internal moisture or the like, moisture is removed. The dew can be easily released, and the dew can be easily and reliably eliminated.

Further, the slide support cover (sheet) 24 is formed with a cut 27 extending from the opening 25 to a desired peripheral edge (an edge of a desired side in the case of a substantially square shape shown). This gap 27 is formed by the slip bearing body 21 with respect to the slip bearing device 20 of the building 10.
2 as it is in contact with the sliding support cover 2
4 can be easily and easily attached and detached to improve the workability and handling at the time of maintenance and inspection. That is, even in the state shown in FIGS. 1 and 2, the slide support cover 24 can be easily attached or detached by using the cut 27. The cut 27
Is merely a separation surface, and is formed such that opposing end surfaces remain in close contact with each other in order to ensure waterproof and dustproof properties during use.

The slide bearing cover 24 can be formed of various materials such as rubber-like elastic material and soft plastic, but is preferably formed of a sheet-like member made of lightweight material such as urethane foam having no water permeability. . Further, the back surface (the surface with protrusions) of the slide support cover 24 may be formed with a surface having a large number of protrusions as shown in the figure, or may be formed with an uneven surface. Further, as shown in the drawing, only one cut 27 is formed from the opening 25 to the edge as shown in the figure, and two cuts from the opening 25 of the sheet 24 to the peripheral edge are formed at two substantially opposing positions, so that the sheet ( The sliding support cover) may be configured to be completely divided into two. However, in this case, it is attached (assembled) to the slide bearing device 20.
In this case, the entirety of the dividing surfaces (cuts) 27 is in close contact with each other, so that dust-proof and waterproof properties can be secured.

According to the embodiment described above, the sliding bearing 21 is provided at the lower part of the building 10, and the building is slidably displaceable via the sliding bearing by the sliding surface 22 provided on the foundation 12. A sliding bearing cover 24 used to cover the sliding surface in the sliding bearing device 20 to be supported, and a sheet-like cover that covers the sliding surface in order to prevent water and dust from entering the sliding surface 22. An opening 25 is formed so as to closely fit with the periphery of the slide bearing member 21.
By making the surface with six, the slide surface 22 is substantially point-contacted at the protruding point, and the sheet 24 is formed with a cut 27 extending from the opening 25 to the peripheral edge. It is easy to attach and remove, is easy to handle, and maintains air permeability on the sliding surface 22 while maintaining the sealing property, so that moisture can be easily released even when dew condensation occurs. The slide support cover 24 that can easily perform the maintenance of the sliding support is provided.

In such a sliding support cover 24, the projection-bearing surface on the back surface of the sheet has a large number of projections 26.
The surface having protrusions on the back surface of the sheet is an uneven surface; the material of the sheet is a lightweight material such as urethane foam having no water permeability; or the opening 25 of the sheet. The above-described effect can be achieved more efficiently by forming the cut 27 extending from the edge to the periphery at two positions substantially opposite to each other so that the sheet can be divided into two.

[0016]

As is apparent from the above description, according to the present invention (claim 1), a sliding bearing is provided at the lower part of the building, and the sliding surface provided on the foundation is provided through the sliding bearing. A sliding bearing device for slidingly supporting the building, wherein the sliding bearing cover is used to cover the sliding surface, wherein the sliding bearing cover covers the sliding surface to prevent water or dust from entering the sliding surface. An opening that forms a perfect sheet and closely fits with the periphery of the slip bearing body is formed, and by making the back surface of the sheet a surface with a protrusion, the slip surface makes substantially point contact with the protrusion at the point of projection, and Has a cut formed from the opening to the periphery, so that it can be easily attached to and detached from the slide bearing device, is easy to handle, and maintains airtightness while maintaining air permeability on the slide surface. Be condensed by water can easily escape, Meitenansu sliding bearings cover which can be easily performed only with supporting devices turn the cover is provided.

According to the second to fifth aspects of the present invention, in addition to the configuration of the first aspect, the rear surface of the sheet has a plurality of projections, and the rear surface of the sheet has the projections. The surface is an uneven surface, the material of the sheet is a light-weight material such as urethane foam having no water permeability, or a cut from the opening of the sheet to the periphery is formed at two locations substantially opposed to each other. As a result, the sheet can be divided into two parts, so that the above-mentioned effect can be achieved more efficiently.

[Brief description of the drawings]

FIG. 1 is an elevational view schematically showing a building using a sliding bearing device having a sliding bearing cover to which the present invention is applied.

FIG. 2 is a longitudinal sectional view showing the slide bearing device in FIG.

FIG. 3 is a perspective view showing an upper surface of a slide bearing cover in FIG. 2;

FIG. 4 is a perspective view showing a back surface of the sliding support cover of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Building 11 Floor surface 12 Foundation 13 Building pillar 14 Ground 20 Slip bearing device 21 Slip bearing member 22 Slip surface 23 Flat member 24 Slip bearing cover 25 Opening 26 Projection 27 Cut 30 Laminated rubber bearing device

Claims (5)

[Claims] 1. A sliding bearing device provided with a sliding bearing at a lower part of a building, wherein the sliding surface is provided on a foundation, and the building is slidably supported via the sliding bearing, for covering the sliding surface. The slide support cover used in the form of a sheet that covers the slide surface to prevent water and dust from entering the slide surface, and has an opening that closely fits around the slide support body. The slip is formed by making the back surface of the sheet a projection surface so that the slip surface makes substantially point contact at a projection point, and the sheet has a cut formed from the opening to the periphery. Bearing cover. 2. The slide bearing cover according to claim 1, wherein the projection-provided surface on the back surface of the sheet is a surface having a large number of projections. 3. The slide bearing cover according to claim 1, wherein the projection-provided surface on the back surface of the sheet is an uneven surface. 4. The slide bearing cover according to claim 1, wherein the sheet is made of a lightweight material such as urethane foam having no water permeability. 5. The sheet according to claim 1, wherein the sheet is divided into two by forming cuts from the opening to the peripheral edge of the sheet at two positions substantially opposed to each other. The slip bearing cover described.