JP2003269531A - Slide bearing structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slide bearing structure superior in long-time durability and weatherproof capable of effectively damping or absorbing shocks and vibrations of earthquakes, and maintaining a primary characteristic without deteriorating a performance along with the elapse of time, especially a slide bearing structure suitable for usage indoors and outdoors of a detached house and the like. <P>SOLUTION: This slide bearing structure has a vibration input support inputting vibrations, and a structure support slidably arranged to the vibration inputting support and capable of damping the inputted vibrations by vibrations. At least one of sliding faces of the vibration inputting support and the structure support is a coating of copolymer composed of an olefin base chain part and a silicon base chain part. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding bearing structure which is suitable for use in a seismic isolation system for buildings and structures and has excellent durability without deterioration in performance over time.

[0002]

2. Description of the Related Art In recent years, in order to prevent destruction and collapse of building structures and the like due to earthquakes, seismic isolation bearing structures have been provided in the foundations of many building structures. This seismic isolation bearing structure is generally composed of a plurality of hard plates, such as steel plates, and soft plates, such as rubber sheets, that are alternately laminated, and a composite laminate that prevents resonance with seismic waves and converts seismic waves into slow vibrations. , And a damper (attenuator) for damping this vibration in a short time.

Conventionally, as the damper, a metal rigid rod damper, a friction damper, a viscous damper, etc. have been known. Recently, among them, two slides have the advantage of effectively damping the vibration. Sliding type friction dampers (hereinafter sometimes referred to as "sliding support structure") that utilize the frictional force generated when a plate slides have been widely used.

By the way, conventionally, as a sliding member provided on the surface of the sliding plate of the sliding bearing structure, a plate plate such as a stainless material has a low friction coefficient and excellent abrasion resistance and high hardness. Synthetic resin is often used, and depending on the case, molybdenum disulfide or a lubricant is intervened on the sliding surface,
The friction coefficient of the sliding surface has been set to a desired design value. It has also been attempted to control the coefficient of friction between the plate plate and the synthetic resin by making unevenness and / or grooves on the contact surface side of the synthetic resin.

Polyethylene, polypropylene, polyester, polyamide, polyimide, polyacetal, polytetrafluoroethylene and the like have been proposed as synthetic resins having a low coefficient of friction and excellent wear resistance and high hardness. It is difficult to obtain a low friction coefficient of around .04, and even if a low friction coefficient is obtained by interposing a lubricant,
It had poor reproducibility and lacked long-term reliability.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems in the prior art and achieve the following objects. INDUSTRIAL APPLICABILITY The present invention is capable of effectively isolating and damping vibrations such as seismic waves, and is suitably used for seismic isolation systems and the like,
A sliding bearing structure that has excellent long-term durability and can maintain its initial characteristics for a long period of time without deterioration in performance over time, and is particularly suitable for indoor and outdoor use such as for single-family homes. The purpose is to provide a dynamic bearing structure.

[0007]

The means adopted by the present invention to solve the above-mentioned problems are as follows. <1> A sliding bearing structure having a vibration input support for inputting vibration and a structure support disposed slidably with respect to the vibration input support and capable of damping the input vibration by sliding. A sliding body, wherein at least one of the sliding surfaces of the vibration input support and the structure support is a coating film of a copolymer composed of an olefin chain part and a silicon chain part. Dynamic bearing structure. <2> The sliding bearing structure according to <1>, wherein a friction coefficient (μ) between sliding surfaces of the sliding bearing structure is 0.001 to 0.08. <3> The above <1>, wherein the copolymer is a block copolymer composed of an olefinic chain portion and a silicon chain portion.
The sliding bearing structure according to <2>. <4> The sliding bearing according to the above <1> or <2>, wherein the copolymer is a graft copolymer having one of an olefin chain portion or a silicon chain portion as a main chain and the other as a side chain. Structure. <5> The number average molecular weight of the copolymer is 500 to 50.
The sliding bearing structure according to any one of the above <1> to <4>, which is 000. <6> The mass ratio (A: B) of the olefinic chain portion (A) and the silicon chain portion (B) of the copolymer is 10:90 to.
The sliding bearing structure according to any one of <1> to <5>, which is 90:10. <7> The sliding bearing structure according to any one of <1> to <6>, wherein the sliding surface of the vibration input support or the structure support is a solid sliding material. <8> The solid sliding material is a polyetheretherketone resin, a polyamide resin, a polyacetal resin, an ultrahigh molecular weight polyethylene resin, a polyester resin, a fluororesin, a polyamideimide resin, a polyphenylene sulfide resin, a polyimide resin, a polybenzimidazole resin. The sliding bearing structure according to <7>, which is at least one member selected from the above.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below. The sliding bearing structure of the present invention is a vibration input support for inputting vibration, and a structure support that is slidably arranged with respect to the vibration input support and is capable of damping the input vibration by sliding. And a sliding support structure having the above-mentioned vibration input support and at least one of the sliding surfaces of the above-mentioned structure support is a copolymer composed of an olefin chain part and a silicon chain part. It is composed of a coating film.

(Olefin-Silicon Copolymer) The above-mentioned olefinic chain portion is preferably an olefinic chain portion formed of a polymer of a monomer having an α-olefinic unsaturated double bond. Specific examples of the monomer having a saturated double bond include monomers having an α-ethylenically unsaturated double bond such as ethylene, propylene, butene and pentene; acrylic acid esters such as methyl acrylate, ethyl acrylate and butyl acrylate; Methacrylic acid esters such as methylmethacrylate, ethylmethacrylate, butylmethacrylate; vinyl esters such as acrylonitrile, acrylamide, methacrylamide, acrylamide, vinyl acetate, etc., vinyl chloride, vinylidene chloride, vinyl ether, vinyl alcohol, su Ren, alkyl - styrenes, halostyrenes, maleic anhydride, maleic acid esters, itaconic acid, itaconic acid esters, vinyl ethers,
Examples thereof include vinyl esters, N-vinyl heterocycles, allyl ethers, allyl esters and the like.

The above-mentioned silicon-based chain portion is preferably a silicon-based chain portion composed of the following structural units.

[Chemical 1] In the above structural formula, R ¹ and R ² each independently represent a hydrogen atom, an alkyl group or an aryl group.

The alkyl group represented by R ¹ and R ² may have a substituent and has 1 to 18 carbon atoms.
Is preferable, and an alkyl group having 1 to 12 carbon atoms is more preferable. Specific examples of the alkyl group include methyl group, ethyl group, propyl group, butyl group, amyl group, hexyl group, octyl group, 2-ethylhexyl group, dodecyl group, octadecyl group, methoxypropyl group, ethoxypropyl group and phenoxy group. Examples include ethyl group, cyclopentyl group, cyclohexyl group, etc.

The aryl group represented by R ¹ and R ² may have a substituent, and the aryl group preferably has 6 to 30 carbon atoms, more preferably 6 to 20 carbon atoms. . Specific examples of the aryl group include a phenyl group, a tolyl group, a xylyl group, a biphenyl group, a naphthyl group, an anthryl group, a phenanthryl group, and an alkyl-substituted product or a halogen-substituted product thereof.

In general, the above-mentioned silicon-based chain portion may have low adhesiveness to a metal, a resin plate or the like, so that it has adhesiveness to the alkyl group and aryl group represented by R ¹ and R ² described above. It is preferred to introduce functional groups for improvement. Functional groups introduced for this purpose include -OH,-
_{COOH, -CHO, -NH 2, -CN} , -NCO, -
CONH _2, -SH, -SO ₂ H, and the like. Also,
It is also preferable to introduce a halogen atom.

The above-mentioned olefin chain part and silicon chain part can be arbitrarily combined to obtain the copolymer used for the sliding surface of the sliding bearing structure of the present invention. Among these combinations, , A copolymer composed of an unsaturated double bond monomer of ethylene and propylene as an olefinic chain part and a structural unit of dimethyl (R ¹ ═CH ₃ , R ² ═CH ₃ ) silicon as a silicon chain part, It is preferable because it has excellent friction coefficient, adhesion, abrasion resistance, strength, weather resistance and the like as a dynamic coating film.

The method for producing the above-mentioned copolymer used in the present invention is not particularly limited, and conventionally known polymerization methods such as solution polymerization, bulk (bulk) polymerization, suspension (emulsion) polymerization, polymer reaction, It can be appropriately selected from polymer modification and the like.

The type of the above-mentioned copolymer used in the present invention is not particularly limited, and various conventionally known copolymers including random copolymers can be used. Among them, among them, In particular, (1) a block copolymer comprising an olefinic chain part and a silicon chain part, and (2)
A graft copolymer in which one of the olefinic chain portion and the silicone chain portion is the main chain and the other is the side chain is preferable. When the copolymer used in the present invention is the above block copolymer or graft copolymer, it has a low friction coefficient (μ) characteristic due to the presence of a silicone chain portion, and has a low friction coefficient due to the presence of an olefinic chain portion. Both of the properties of high adhesion and high strength can be retained, and their balance can be widely controlled by changing the ratio of copolymerization. Further, the block copolymer and the graft copolymer can be molecularly designed so that desired performances can be obtained relatively easily by varying the synthesis conditions.

The number average molecular weight of the copolymer used in the present invention is preferably 500 to 50,000, more preferably 1,000 to 30,000, and particularly preferably 2,000 to 25,000. If the molecular weight is less than 500, the mechanical strength of the coating film may be low and abrasion resistance, durability, etc. may be insufficient. On the other hand, if the molecular weight exceeds 50,000, it may be synthesized in high yield. In addition, the solubility is low and the viscosity is too high, which may make it difficult to prepare a coating solution.

In the above-mentioned copolymer used in the present invention, the friction coefficient (μ) of the surface can be obtained by varying the mass ratio (A: B) of the olefinic chain (A) and the silicon chain (B). Can be widely changed. Further, the above-mentioned copolymer used in the present invention may be added with a silicone oil such as polydimethylsiloxane, polymethylphenylsiloxane, polymethylhydrogensiloxane for the purpose of varying the friction coefficient (μ) of the surface. .

Further, the above-mentioned copolymer used in the present invention includes
In addition to the above silicone oil, if necessary, for the purpose of maintaining and improving durability, weather resistance, water resistance, stability over time, production suitability, etc., an ultraviolet absorber, an antioxidant, an antioxidant, a light Stabilizers, plasticizers, fillers and the like can be added.

The above-mentioned copolymer used in the present invention is a copolymer in which the mass ratio (A: B) of the olefinic chain part (A) and the silicon-based chain part (B) is 10:90 to 90:10. Is preferable, and the mass ratio (A: B) is 20:80 to 80: 2.
0 is more preferable, and 25:75 to 75:25 is particularly preferable. The mass ratio (A: B) is 10:90 to 90:10.
If the silicon chain (B) is too small, it may be difficult to control the friction coefficient (μ) between the sliding surfaces to 0.08 or less, while the mass ratio (A: B) ) Is 1
Olefin chain (A) deviating from 0:90 to 90:10
If the value is too small, the strength and durability of the coating film may decrease.

In the sliding bearing structure of the present invention, at least one sliding surface may be composed of a coating film of a copolymer composed of an olefin chain part and a silicon chain part. The friction coefficient (μ) between the sliding surfaces of the sliding bearing structure is
The friction coefficient is preferably 0.001 to 0.08, more preferably 0.01 to 0.07, and most preferably 0.02 to 0.065. If the friction coefficient between the sliding surfaces is less than 0.001, the building structure or the like may easily move due to wind or the like.
When the coefficient of friction exceeds 0.08, the ability of particularly delaying the phase of a shocking input and mitigating or isolating the building structure or the like from the shock of an earthquake may be too low. Is not sufficient to achieve the purpose and effect of. On the other hand, the friction coefficient between the sliding surfaces is 0.001 to 0.
Within the range of 08, such a situation does not occur, and shock input such as seismic waves can be mitigated and attenuated, and building structures and the like can be sufficiently isolated from shock and protected.

Here, the above-mentioned friction coefficient in the present specification is such that the unit surface pressure becomes 12 MPa between the sliding surfaces of the structure support (upper plate) and the vibration input support (lower plate). Calculated as a dynamic friction coefficient (μ) by measuring the frictional force when a load is applied and sliding in a horizontal (lateral) direction at a sliding speed of 20 cm / sec, and dividing by the above vertical load. Is.

(Solid Sliding Material) In the sliding bearing structure of the present invention, one sliding surface of the vibration input support and the structure support constituting the sliding bearing structure is made to have an olefin chain portion. In the case of being composed of a coating film of a copolymer composed of a silicone chain portion, it is a preferred embodiment that the other sliding surface is composed of a solid sliding material. As the solid sliding material used in the above, from the viewpoint of friction coefficient, durability, weather resistance and economic efficiency, polyether ether ketone resin, polyamide resin, polyacetal resin, ultra high molecular weight polyethylene resin, polyester resin, fluorine-based Suitable examples include resins, polyamide-imide resins, polyphenylene sulfide resins, polyimide resins, polybenzimidazole resins and the like. Among the above, particularly polyether ether ketone resin, polyamide resin, polyacetal resin is suitable, among them, especially durability, weather resistance, water resistance, solvent resistance, creep resistance, abrasion resistance, heat resistance, etc. Polyether ether ketone resin is most preferable from the viewpoint of excellent physical properties.

The above polyether ether ketone copolymer is a thermoplastic copolymer resin having a polymer chain composed of an ether bond and a ketone bond. Among them, a polyether ether ketone copolymer composed of a combination of pheniketones and phenyl ethers, in which the skeleton of the polymer chain is all aromatic rings, has a low friction coefficient, excellent abrasion resistance, strength and hardness. It is high and is excellent in durability, weather resistance, water resistance, heat resistance, stability over time, and the like, and poly (oxy-1,4-phenylene-oxy-phenylene-carbonyl-1,4-phenylene) is particularly preferable. It is most preferable because it has all the advantages and is easily available.

As the polyether ether ketone resin, the polyether ether ketone resin is used as a matrix, and a resin or filler having a low friction coefficient, a resin or filler having high strength or hardness, a fiber or reinforcing material having high reinforcing property, and It is also possible to use a composite of a resin or a filler having good wear resistance.

The polyetheretherketone resin used in the present invention and the polyetheretherketone copolymer reinforced with glass fibers or carbon fibers are commercially available from ICI under the trade name "VICTREX PE".
EK "commercially available (for example, product number 450G,
450GL30, 450CA3, etc.), commercially available from Sumitomo Chemical Co., Ltd. under the trade name "Sumiproi K" (for example, product numbers CK4600, TK4600, CK3
420, TK3420, GK3440, SK1660
Etc.) and products sold under the trade name “Polypenco PEEK” by Nippon Polypenco Co., Ltd. (for example, product number PK
-450, PK-450FC, PK-450GF, PK
-450CA, PK-150PF, PK-450PF,
PK-150FC30, PK-450FC30, PK-
450G Black, etc.) can be preferably used.

As described above, various resins, fillers, reinforcing materials and the like can be added to the polyether ether ketone resin used in the present invention. Among these compounds, especially poly (oxy-1,4-phenylene-oxy-phenylene-carbonyl-1,4-
A compound in which at least graphite, a fluororesin and carbon fiber are mixed in a matrix of phenylene) is preferable because it has a low friction coefficient, high strength and hardness, and excellent abrasion resistance and durability.

The base material for forming the coating film of the copolymer of the olefinic chain portion and the silicone chain portion of the present invention is
The sliding bearing structure is not particularly limited as long as it is durable for use, and can be appropriately selected according to the purpose. For example, the vibration input support and the structure in the sliding bearing structure. Preferable examples include a structure including one flat surface of the object support, or a plate material fixed to these. In this case, the structure on which the sliding film for the sliding bearing structure is formed, the plate material (for example, a stainless steel plate), etc. function as a sliding film in the sliding bearing structure.

The coating method is not particularly limited as long as the coating liquid for the sliding film can be thinly coated on the base material, and can be appropriately selected from known coating methods. Spray coating, curtain coating, screen printing method, coater method, doctor blade method and the like can be mentioned.

The composition of the sliding film is preferably uniform in the thickness direction. In this case, the sliding film is not broken or peeled off, which is advantageous in terms of excellent durability.

(Structure of Sliding Bearing Structure) The structure of the sliding bearing structure of the present invention comprises at least a vibration input support and a structure support, and other known members may be used as necessary. Can be provided appropriately. The vibration input support is
It is a member to which vibrations such as earthquakes are directly input, and is usually directly or indirectly fixed to the ground where structures such as machines, devices, buildings, houses, buildings and bridges are provided. The structure support is slidably arranged with respect to the vibration input support and delays the phase by sliding to attenuate the input, and is usually a machine, a device, a building, a house, It is directly or indirectly fixed to the bottom of structures such as buildings and bridges.

In the present invention, the sliding surface of at least one of the vibration input support and the structure support is coated with the above-mentioned copolymer comprising the olefinic chain portion and the silicon chain portion of the present invention. A sliding member made of a film is provided, and if necessary, a solid sliding member or the like is provided on the other sliding surface.
The two sliding surfaces are in contact with each other and are slidably arranged.

Specific embodiments of the sliding bearing structure of the present invention will be described in detail below with reference to the drawings. In the embodiments of FIGS. 1 and 2, the sliding surface of the structure support is a solid sliding material made of a compound of polyetheretherketone copolymer, and the sliding surface of the vibration input support is olefin-based. It is an example of a sliding bearing structure which is a coating film of a copolymer composed of a chain portion and a silicon chain portion. The embodiment of FIGS. 3 and 4 is a sliding bearing structure in which the sliding surface of the structure support and the vibration input support is a coating film of a copolymer composed of an olefin chain part and a silicon chain part. Is an example of.

One embodiment of the sliding bearing structure of the present invention shown in FIG. 1 will be described in detail. The sliding bearing structure 10 includes bolts 4 on a ground (foundation) 16 on which a target structure is installed.
0 has a vibration input support 12 and a metal holder 24 indirectly attached to a bottom substrate 28 of the upper structure, and the lower end of the metal holder 24 has polyetheretherketone. A solid sliding member 38 made of a compound of a copolymer is provided, and a slide made of a coating film of a copolymer of the present invention having an olefinic chain portion and a silicon chain portion is provided on the upper end of the vibration input support 12. A moving material 34 is provided.

Here, the method for providing the solid sliding member 38 made of a compound of polyether ether ketone copolymer at the lower end of the metallic holder 24 is not particularly limited. They may be joined by using an appropriate adhesive, may be physically fitted and fixed, or may be fixed by locking means such as screws or bolts.

The sliding bearing structure 10 is horizontally (horizontally) only when the vibration input support 12 and the structure support 14 receive a vibration (horizontal lateral force) such as seismic waves of a predetermined value or more. Can be freely displaced relative to each other in the direction, and friction such as friction between the coating film sliding member 34 of the vibration input support 12 and the solid sliding member 38 of the structure support 14 can be used to generate vibrations such as seismic waves. Delay and decay.

In this embodiment, the structure support 1
The sliding surface 38 of No. 4 is designed in a column shape, and the sliding surface 34 of the vibration input support 12 is designed in a flat plate shape having a larger area than the sliding surface 38 of the structure support 14. . In this way, since the sliding surface of the vibration input support body 12 is designed to have a larger area than the sliding surface of the structure support body 14,
This sliding bearing structure 10 can maintain a stable state with respect to horizontal (lateral) displacement.

Further, as shown in the drawing, the side surface is formed so as to cover the entire surface of the coating film 34 of the copolymer composed of the olefinic chain portion and the silicon chain portion constituting the sliding surface of the sliding bearing structure 10. It is preferable to provide the dustproof side plate 30 and the dustproof cover 32 on the upper surface thereof to prevent dust, foreign matter, and rainwater from entering from the outside.

FIG. 2 shows the sliding bearing structure 1 of the present invention shown in FIG.
It is an expanded sectional view of the sliding surface part in 0. The metal holder 24 is fitted in the metal flange 22. The structure support 14 of this figure is an example fixed to a structure bottom substrate 28 via a cushion rubber 26, and a solid made of polyetheretherketone copolymer compound is provided under the metal holder 24. The sliding member 38 is fixed and constitutes the sliding surface of the structure support 14. Here, the holder 24 and the integral structure support formed of a solid sliding material made of a polyetheretherketone copolymer compound are also one of the preferred embodiments of the present invention.

In the present sliding bearing structure 10, in order to improve the contact between the sliding members 34 and 38 and keep the two sliding members in parallel, the sliding member 38 having the smaller area is used. Cushion rubber 26 made of an elastic material such as rubber at the base
Are arranged. As a result, even when an eccentric load is applied to the sliding bearing structure 10, the two sliding surfaces are kept parallel, and stress concentration due to the eccentric load and local peeling due to the stress concentration are caused. Effectively prevented.

In the present embodiment, the structure bottom substrate 28, the cushion rubber 26, and the metal holder 24 do not necessarily have to be adhered to each other, but in order to improve workability during construction or in an earthquake. In this case, it is preferable to bond them so as not to drop due to pitching.

FIG. 3 is a schematic sectional view showing another embodiment of the sliding bearing structure of the present invention, and FIG. 4 is an enlarged sectional view of a sliding surface portion in the sliding bearing structure.

In the sliding bearing structure 10 of FIG. 3, the sliding surface of the vibration input support 12 is composed of the olefin chain part and the silicon chain part of the present invention as in the case of FIG. The sliding member 34 is made of a polymer coating film. The sliding surface of the structure support 14 is also composed of the sliding member 34 made of a coating film of the copolymer of the olefin chain portion and the silicon chain portion of the present invention. Incidentally, in this embodiment,
The points other than the above are the same as in the first embodiment, and the same reference numerals are given and the description thereof is omitted.

Although two embodiments of the sliding bearing structure of the present invention have been described above, the present invention is not limited to the above embodiments, and for example, the sliding of the vibration input support 14 of FIG. The surface may be formed of a solid sliding material, and various modifications may be made without departing from the gist of the present invention.

The sliding bearing structure of the present invention described above is
At least one sliding surface of the vibration input support and the structure support is provided with a coating film of a copolymer composed of an olefinic chain portion and a silicon chain portion, and in some other sliding surface, By being provided with a solid sliding material, water resistance and ultraviolet resistance are improved, performance is not deteriorated with time, and durability is excellent, and a known composite laminate (laminated rubber composite) is used. By combining it with (1), a seismic isolation system with good durability and seismic isolation performance can be constructed, and it can be used without problems, especially indoors and outdoors such as single-family homes.

In the seismic isolation system, it is preferable to control the ratio of the mass supported by the entire sliding support structure to the total mass of the frame, and the sliding support structure with respect to the entire seismic isolation system. The load bearing ratio (P) is preferably in the range of 0.3 to 1.0. Further, it is preferable to set a large initial rigidity as a measure against wind sway, and as a result of examination, as a quantity of the sliding bearing structure necessary to obtain the minimum initial rigidity, the load bearing ratio ( P) is at least 0.30 or more. Therefore, from the viewpoint of the balance between the seismic isolation effect and the wind sway prevention effect, the load bearing ratio (P) is preferably 0.30 ≦ P ≦ 1.0.

In the seismic isolation system, it is feared that the sliding support structure is used together with the laminated rubber composite having a large pull-out resistance, and the laminated rubber composite is apt to generate a negative pressure. It is preferable to install it in a place. For this reason, it is preferable to install the laminated rubber composite at a position farthest from the fulcrum (center of gravity) where there is a risk of maximum vertical movement, specifically, at the corners of the body including the four corners.

[0048]

EXAMPLES The present invention will be specifically described below with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples.

[Example 1] As the sliding surface of the vibration input support (lower plate) of the sliding bearing structure of Example 1, a metal plate was coated with a coating film having the following solid content composition. Formed. <Solid content of coating film> -Olefin-silicon copolymer 100% by mass (ethylene / propylene-based and dimethylsilicon-based block copolymer, molecular weight 10000, mass copolymerization ratio 50:50) The above copolymer Was dispersed in a dispersion medium to prepare a coating solution, which was then coated on a stainless plate and dried to form a coating film having a thickness of 20 μm as a sliding surface of the vibration input support (lower plate) of Example 1. . The sliding surface of the structure support (upper plate) of the sliding bearing structure was made of a solid sliding material made of PEEK (polyether ether ketone) resin.

Comparative Example 1 On the other hand, the sliding surface of the vibration input support (lower plate) of the sliding bearing structure of Comparative Example 1 was coated with a coating film having the following solid content composition on a metal plate. A coating was formed. The sliding surface of the structure support (upper plate) of the sliding bearing structure was made of the same solid sliding material made of PEEK (polyether ether ketone) resin as in Example 1. <Solid content of coating film> Polytetrafluoroethylene (PTFE) 20% by mass Paraffin wax 80% by mass The above composition is dispersed in a dispersion medium to prepare a coating liquid,
A stainless steel plate was applied and dried, and a coating film having a thickness of 20 μm was formed as a sliding surface of the vibration input support (lower plate) of Comparative Example 1.

With respect to the sliding bearing structures according to Example 1 and Comparative Example 1 obtained above, the performance was evaluated by the following method. (Friction coefficient between sliding surfaces) 60 mmφ sliding plate made of sliding material of structure support (upper plate) and vibration input support (lower plate)
The sliding plate of 1200 mm ² made of the sliding material of
Applying a load of MPa at a sliding speed of 20 cm / sec,
The frictional force when sliding was measured and divided by the surface pressure to calculate the dynamic friction coefficient (μ).

(Sliding test) A sliding plate of 60 mmφ (upper plate) made of the sliding material of the structure support and a 1200 mm ² sliding plate (lower plate) of the sliding material of the vibration input support were used. , A surface pressure of 120 kgf / cm ² is applied, and a sliding speed of 10 cm /
In seconds, the amplitude is 60 cm, and the same place is repeatedly slid for a total of 10 m. The results of the above evaluation tests are shown in Table 1 below.
Shown in.

[0053]

[Table 1]

The structure support (upper plate) and the vibration input support (lower plate) made of the sliding material of Example 1 were attached to the sliding bearing structure shown in FIG. Specifically, the solid sliding member 38 of the sliding bearing structure of Example 1 had a diameter of 60 mm and a thickness of 5 mm, and was firmly fixed to the metal holder 24.

Area 75 fixed to the vibration input support 12
0 mm x 750 mm, 3 mm thick stainless steel plate 3
On the surface of 6, a coating film 34 for the sliding bearing structure is formed.

When the sliding test was carried out using the assembled sliding bearing structure, the sliding test was performed smoothly, and no change in the friction coefficient was observed after the test was completed.

[0057]

According to the present invention, vibrations such as seismic waves can be effectively damped, and it is suitable for use in seismic isolation systems, etc., and has improved resistance to ultraviolet rays and water resistance, and deteriorated with time. It is possible to provide a sliding bearing structure that can maintain the initial performance over a long period of time without any need, and a sliding bearing structure particularly suitable for indoor and outdoor use such as a single-family home. Obtainable.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of a sliding bearing structure of the present invention.

FIG. 2 is an enlarged cross-sectional view of a sliding surface portion of the sliding bearing structure of FIG.

FIG. 3 is a schematic cross-sectional view showing another embodiment of the sliding bearing structure of the present invention.

4 is an enlarged cross-sectional view of a sliding surface portion of the sliding bearing structure of FIG.

[Explanation of symbols]

10 ……… Sliding bearing structure 12 ………… Vibration input support 14 ………… Structure support 16 ……… Basic 18 ……… Sliding plate (sliding material) 20 ……… Sliding plate (sliding material) 22 ……… Metal flange 24 ……… Metal holder 26 ………… Cushion rubber 28 ………… Structure bottom substrate 30 ……… Dustproof side plate 32 ……… Dust cover 34 ……… Coating film 36 ……… Metal plate 38 ………… Solid sliding material 40 ……… Bolt 42 ……… Support post

Continued front page    F term (reference) 3J048 AA03 AA07 BA02 BD04 BG04                       DA01 EA38                 4F100 AK03A AK03J AK04A AK17A                       AK41A AK46A AK49A AK50A                       AK52A AK52J AK54A AK57A                       AK80A AL01A AL04A AT00B                       BA02 BA10A BA10B CC00A                       GB90 JA07A JK11 JK16                       YY00 YY00A

Claims (8)

[Claims] 1. A slide having a vibration input support for inputting vibration and a structure support arranged slidably with respect to the vibration input support and capable of damping the input vibration by sliding. The support structure, wherein at least one of the sliding surfaces of the vibration input support and the structure support is a coating film of a copolymer composed of an olefin chain part and a silicon chain part. Sliding bearing structure. 2. The sliding bearing structure according to claim 1, wherein a friction coefficient (μ) between sliding surfaces of the sliding bearing structure is 0.001 to 0.08. 3. The sliding bearing structure according to claim 1, wherein the copolymer is a block copolymer composed of an olefin chain part and a silicon chain part. 4. The sliding bearing structure according to claim 1, wherein the copolymer is a graft copolymer having one of an olefinic chain portion or a silicon chain portion as a main chain and the other as a side chain. body. 5. The number average molecular weight of the copolymer is 500.
The sliding bearing structure according to any one of claims 1 to 4, which is -50000. 6. The olefinic chain portion (A) of the copolymer
And the mass ratio (A: B) of the silicon chain (B) is 10:
90 to 90:10, The sliding support structure according to any one of claims 1 to 5. 7. The sliding bearing structure according to claim 1, wherein the sliding surface of the vibration input support or the structure support is a solid sliding material. 8. The solid sliding material is polyetheretherketone resin, polyamide resin, polyacetal resin,
8. At least one selected from ultra-high molecular weight polyethylene resin, polyester resin, fluorine resin, polyamide-imide resin, polyphenylene sulfide resin, polyimide resin, and polybenzimidazole resin.
The sliding support structure described in.