JP2000119408A - Sliding structure by combining two sliding members and slip supporting device using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sliding structure by combining two sliding members, not only having stable, low, static and dynamic friction coefficients but also yielding an appropriate and effective low-frictional sliding when necessary, and a slip supporting device using the sliding structure. SOLUTION: This sliding structure is composed of a flat member 2 in which the sliding surface 14 is made of a lubricating film 13 of a thermosetting synthetic resin, and a facing member 3 in which the sliding surface 24 is made of a synthetic resin. The lubricating film 13 is made of a compsn. comprising an epoxy resin, a hardening agent and a silicone oil. The wt. ratio for blending the epoxy resin and the hardening agent pref. has a relationship of (epoxy resin):(hardening agent)=E:10-E:300. wherein E represents the epoxy equivalent of the epoxy resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding structure in which two sliding members having sliding surfaces which are in sliding contact with each other are both made of synthetic resin, and a sliding bearing device using the sliding structure.

In a combination of two members that are in sliding contact with each other, when one member is made of synthetic resin, the other member is generally made of metal such as steel. However, for various purposes and needs: rust prevention, chemical resistance,
Due to electrical insulation, weight reduction, and other design requirements, the other member itself may be made of synthetic resin, or at least the sliding surface may be made of synthetic resin.

[0003] For example, a combination of a steel shaft coated with a synthetic resin and a synthetic resin bearing, a combination of gears made of a synthetic resin, a synthetic resin pipe and a push-pull (reciprocal sliding) inserted through the same. Or a control cable made of a combination with a wire rope coated with a synthetic resin that slides and rotates.

[0004]

However, in the case of a combination of sliding members made of synthetic resin, even a tetrafluoroethylene resin which is known to have a low friction coefficient can be used under dry friction conditions. In slip, it is difficult to make the dynamic friction coefficient 0.1 or less.

Further, in a sliding bearing device having a function of releasing a displacement of a structure by sliding in response to an earthquake motion, if the frictional resistance acting on the sliding surface is large, the sliding displacement becomes undesired, and effective seismic isolation cannot be achieved. In order not to exhibit this, it is required that the frictional resistance on the sliding surface be low.

Further, the sliding bearing device does not operate except when force is input due to an earthquake or the like. Therefore, in order to obtain a stable seismic isolation effect, the frictional resistance during operation must be stable, that is, It is required that the change with time of the static friction coefficient is small. That is, it is required that the static friction coefficient is low and stable, in addition to the low dynamic friction coefficient.

However, in the case of a combination of sliding members made of synthetic resin, the coefficient of static friction generally shows a value of twice or more of the coefficient of dynamic friction. Further, in the case where the two members are not always operated under the load, the coefficient of static friction tends to gradually increase due to microscopic creep due to long-term contact between the two members.

Therefore, by applying a lubricating oil such as grease or oil to the sliding surface, both the coefficient of static friction and the coefficient of dynamic friction can be reduced. This effect is lost, and the friction coefficient gradually increases due to the effect of solidification or deterioration over time.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has a stable and low coefficient of static friction and dynamic friction.
It is an object of the present invention to provide a sliding structure in which two sliding members are combined and a sliding bearing device using the sliding structure, in which accurate and effective low friction sliding is performed.

[0010]

According to the present invention, there is provided a first sliding member having a sliding surface made of a lubricating coating made of a thermosetting synthetic resin, and a second sliding member having a sliding surface made of a synthetic resin. A sliding structure comprising a first sliding member and a second sliding member, wherein the lubricating coating is a coating of a composition comprising an epoxy resin, a curing agent, and a silicone oil. , And a slide bearing device using the sliding structure.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
First, of a first sliding member and a second sliding member that are in sliding contact with each other on a sliding surface, a composition forming a lubricating coating made of a thermosetting synthetic resin on a sliding surface of the first sliding member. Is described.

As the epoxy resin, conventionally known epoxy resins can be used. For example, bisphenol A type epoxy resin,
Glycidyl ether type epoxy resin such as bisphenol F type epoxy resin, phenol novolak type epoxy resin, cresol novolak type epoxy resin, brominated bisphenol A type epoxy resin, glycidyl ester type epoxy resin, glycidylamine type epoxy resin, alicyclic type epoxy resin And the like. These may be used alone or in combination of two or more. Specifically, a bisphenol A type liquid or solid type epoxy resin “Epicoat (trade name)” manufactured by Yuka Shell Epoxy Co., Ltd. may be mentioned. The epoxy resin forms the base of the synthetic resin film of the present invention, and functions as an adhesive with the base.

As the curing agent, those conventionally used as curing agents for epoxy resins can be used.
Examples thereof include polyamines, acid anhydrides, phenol resins, polyamide resins, and mercaptan compounds. Further, with these curing agents, tertiary amines, imidazole derivatives,
A curing accelerator such as boron fluoride complex salts may be used in combination.

Examples of the polyamine include aliphatic polyamines such as diethylenetriamine and triethylenetetramine;
Alicyclic amines such as isophoronediamine and bis (4-amino-3-methylcyclohexyl) methane; aromatic amines such as diaminodiphenylmethane, diaminodiphenylsulfone and metaphenylenediamine; aminoethylpiperazine; and 3,9-bis (3- Aminopropyl) -2,
Heterocyclic amines such as 4,8,10-tetraoxaspiro [5.5] undecane, dicyandiamide and modified products thereof are included. As a modification technique, for example, it is possible to form an adduct with an epoxy resin, ethylene oxide, propylene oxide, acrylonitrile, and ketones. Specific examples of the polyamine include modified aliphatic polyamine “Epicure T (trade name)”, Yuka Shell Epoxy, modified alicyclic amine “Epicure 113 (trade name)”, and modified aromatic amine “Epicure W ( Product name)].

Examples of the acid anhydride include aliphatic acid anhydrides such as dodecyl succinic anhydride and polyazeleic anhydride, hexahydrophthalic anhydride, tetrahydrophthalic anhydride,
Alicyclic acid anhydrides such as methylnadic anhydride, aromatic acid anhydrides such as phthalic anhydride, trimellitic anhydride, and pyromellitic anhydride, and halogenated acid anhydrides such as tetrabromophthalic anhydride and heptanoic anhydride In general, a tertiary amine or an imidazole derivative is used as a curing accelerator.
A specific example is “Epicure 134A (trade name)” manufactured by Yuka Shell Epoxy.

Examples of the phenol resin include a novolak type phenol resin, and a curing accelerator is generally used in combination.

Examples of the polyamide resin include polyamide obtained from dimer acid, which is a dimer of unsaturated fatty acid, and polyamine.

The mercaptan compound is an aliphatic polysulfide polymer having a mercapto group -SH at both ends of a molecular structural formula. Since it does not react with an epoxy resin by itself, it cannot be reacted with the above-mentioned polyamine or tertiary amine. Combination is required. Specific examples of the mercaptan-based compound include “Cup Cure 3800 (trade name)” manufactured by Yuka Shell Epoxy.

The mixing ratio of the epoxy resin and the curing agent is determined by the ratio of the number of epoxy groups or hydroxyl groups in the epoxy resin to the number of functional groups in the curing agent that reacts with the epoxy groups or hydroxyl groups.

For example, when a polyamine is used as a curing agent, assuming that the epoxy equivalent of the epoxy resin is E and the amine equivalent of the polyamine is A, the polyamine (0.8 to 1.2) × Ag with respect to the epoxy resin Eg. . Here, the epoxy equivalent is the number of grams of an epoxy resin containing 1 gram equivalent of an epoxy group, and the amine equivalent is the number of grams of a polyamine containing 1 gram equivalent of active hydrogen that reacts with an epoxy group.

Therefore, the blending weight ratio of the epoxy resin and the curing agent varies depending on the type of the epoxy resin and the type of the curing agent to be used, but is set as follows.
That is, it is blended with the epoxy resin Eg at a ratio shown in Table 1. Here, E is the value of the epoxy equivalent of the epoxy resin. (Below)

[0022]

[Table 1]

When a curing accelerator is used in combination, 1 to 20 g of a curing accelerator may be blended with the epoxy resin Eg.

[0024] Silicone oils are generally broadly classified into non-reactive silicone oils and reactive silicone oils.
The reactive silicone oil is a silicone oil in which a part of a methyl group of dimethylpolysiloxane is substituted with a reactive functional group. In the present invention, among these silicone oils, those that do not react with the curing treatment by heat baking described later, particularly the epoxy resin and the curing agent, and that do not solidify due to their low reactivity even if they react, have a viscosity of not solidifying. More can be used.

Such silicone oils include dimethylsilicone oils and dimethylpolysiloxanes in which a part of the methyl groups is replaced with a polyether group, a phenyl group, an alkyl group, an aralkyl group, a fluorinated alkyl group or the like. Carboxyl-modified silicone oil, carbinol-modified silicone oil, epoxy-modified silicone oil having an epoxy group at both terminals, epoxy-modified silicone having an epoxy group in a side chain having an epoxy equivalent of more than 1000 among the reactive silicone oil and the reactive silicone oil Oil. here,
A carboxyl-modified silicone oil is a silicone oil in which a part of the methyl groups of dimethylpolysiloxane has been substituted with a functional group having a carboxyl group, and a carbinol-modified silicone oil has a part of the methyl groups of dimethylpolysiloxane that has an alcoholic hydroxyl group. Epoxy-modified silicone oil refers to a silicone oil obtained by substituting a part of the methyl groups of dimethylpolysiloxane with a functional group having an epoxy group.

Among the above silicone oils, the non-reactive silicone oil has a viscosity (25 ° C.) of 100 to 5000.
0 cSt, preferably 500 to 10000 cSt is used. In addition, the reactive silicone oil used in the present invention hardly reacts with the epoxy resin or the curing agent during the curing treatment by heat baking, or has low lubricity even if it reacts, but still has lubricity. Contribute to low friction.

The amount of the silicone oil is 2 to 20 parts by weight, preferably 5 to 15 parts by weight, based on 100 parts by weight of the sum of the epoxy resin and the curing agent. If the amount is less than 2 parts by weight, the effect of improving the sliding properties cannot be obtained, and if it exceeds 20 parts by weight, the mechanical strength of the synthetic resin film is significantly reduced.

In addition to the above-mentioned epoxy resin, curing agent and silicone oil, inorganic and organic filler powders can be blended if necessary. Examples of the inorganic and organic filler powders include graphite, inorganic powders such as boron nitride, and organic powders such as a fluororesin.The compounding amount is based on 100 parts by weight of the sum of the epoxy resin and the curing agent. 2 parts by weight or more from the viewpoint of the blending effect, and 10 parts by weight or less from the viewpoint of the workability of coating film formation and the like.

A method for forming a lubricating coating made of a thermosetting synthetic resin will be described. After dissolving or dispersing the epoxy resin, silicone oil, and, if necessary, organic and inorganic filler powders in an organic solvent, dissolve the curing agent, or dissolve the epoxy resin in the organic solvent, and then apply the silicone oil, curing agent, If necessary, an organic or inorganic filler powder is dissolved or dispersed to have a solid content of 30 to 40% by weight and a viscosity (normal temperature) of 1%.
A coating liquid of about 00 to 200 cSt is prepared.

Examples of the organic solvent include ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone; alcohols such as isopropyl alcohol and n-butanol; aromatic hydrocarbon solvents such as toluene and xylene; and tetrahydrofuran. Can be. These organic solvents are used alone or as a mixture.

A coating film is formed on the steel surface, which has been subjected to a commonly-used process such as shot blasting and degreasing, by a method such as brushing or spraying, and a curing process is performed to form a cured film. obtain.

The curing treatment conditions after the formation of the coating film can take various conditions depending on what curing agent is used. As an example, when an alicyclic amine is used as a curing agent, after forming a coating film, the solvent is removed by air drying or pre-drying at 80 ° C. for about 30 minutes.
A desired cured coating is obtained by baking for 0 minutes.

The coating thickness is 5 to 100 μm, especially 10 to 100 μm.
It is 50 μm, most preferably 20 to 40 μm.
If it is less than 5 μm, the uniformity of the coating is impaired, or the durability as a lubricating coating is reduced. On the other hand, if it exceeds 100 μm, the mechanical strength of the coating is impaired, and the load resistance as a sliding member is reduced.

Next, the synthetic resin constituting the sliding surface of the second sliding member which comes into sliding contact with the first sliding member will be described. The synthetic resin is not particularly limited, and any thermoplastic or thermosetting resin can be used. For example, phenol resin, epoxy resin, polyolefin, polyacetal, polyamide, polybutylene terephthalate, polyphenylene sulfide, polyether ether ketone, aliphatic ketone, fluororesin, polyimide resin, aromatic polyester resin and the like can be mentioned. These synthetic resins may be used in combination of two or more. In addition, those in which a lubricating oil agent and a reinforcing agent are blended can be used. Lubricants include lubricating oil, grease,
Wax, graphite, molybdenum disulfide, fluorine resin, etc.
Examples of the reinforcing agent include glass powder, glass fiber, carbon powder, carbon fiber, and aramid fiber.

These synthetic resins can be used by embedding a block-shaped or plate-shaped molded product in a recess formed in a backing made of metal or the like, with a part thereof protruding, or by bonding or screwing to the surface of the backing. And various forms of application, such as use as a thin film on the surface of a backing material.

As this thin film type, a porous sintered layer of a copper alloy is provided on a steel plate, a synthetic resin is supplied on the sintered layer, and pressure and heat are applied to form a resin thin film. Multi-layered sliding member, or a cured coating of the above synthetic resin directly on the surface of a backing material such as steel, for example, a solvent dispersion type (trade name: ethylene tetrafluoride resin manufactured by Daikin Industries, Ltd.)
Polyfluorocarbon (TFE enamel) is applied and baked to form a cured film, and any of them can be used effectively.

[0037]

EXAMPLES The present invention will be described below in detail with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist.

(First sliding member) Width 40 mm, length 280
mm, 10 mm thick plate-shaped stainless steel sheet SU
S304 was used as a base, and shot blasting and degreasing treatments were performed on a mixed solvent dilution of a mixture of methyl isobutyl ketone and toluene (solid content 33) composed of components (a) to (k) shown in Tables 2 and 3 % By weight) at 80 ° C
After pre-drying for 30 minutes to remove the solvent, heat baking was performed at 180 ° C. for 30 minutes to obtain a coating thickness of 40 μm.

In the table, the epoxy resin is “Epicoat 828 (trade name) manufactured by Yuka Shell Epoxy, epoxy equivalent:
190 ”, and polyamine is a modified alicyclic amine“ Epicure 113 (trade name) ”manufactured by Yuka Shell Epoxy Co., Ltd.
Acid anhydride is hexahydrophthalic anhydride, tertiary amine is benzyldimethylamine, and KF-96 is dimethyl silicone oil “KF-96” manufactured by Shin-Etsu Chemical Co., Ltd.
(Trade name), viscosity: 5000 cSt "
Is a methylphenyl silicone oil “SH510 (trade name), viscosity: 500 cSt” manufactured by Dow Corning Toray Silicone Co., Ltd., and KF-102 is an epoxy having an alicyclic epoxy group on a side chain manufactured by Shin-Etsu Chemical Co., Ltd. The modified silicone oil “KF-102 (trade name), epoxy equivalent: 3600, viscosity: 4000 cSt” was added to SF84.
No. 18 is a carboxyl-modified silicone oil having a carboxyl group in the side chain “SF8418 (trade name) manufactured by Dow Corning Toray Silicone Co., Ltd .;
3500, viscosity: 2500 cSt "was added to KF-105.
Is an epoxy-modified silicone oil having a glycidyl group at both terminals “KF-105 (trade name), epoxy equivalent: 490, viscosity 15 cSt” manufactured by Shin-Etsu Chemical Co., Ltd.
TFE indicates tetrafluoroethylene resin. (Below)

[0040]

[Table 2] (Below)

[0041]

[Table 3]

(Second sliding member) (A) As glass fiber powder, "MF06JB1-2" manufactured by Asahi Fiberglass Co., Ltd., having a diameter of 10 μm and an average length of 63 μm.
0 (trade name) 15% by weight, as polyimide resin powder, 2% by weight of "P84 (trade name)" manufactured by Lenzing Co., and the remainder from ethylene tetrafluoride resin "Teflon 7AJ (trade name)" manufactured by Du Pont-Mitsui Fluorochemicals Co., Ltd. Of a resin composition comprising: The end surface of a rod-shaped object having a diameter of 10 mm and a height of 14 mm was used as a sliding surface. (B) A molded article of a resin composition comprising the polyimide resin powder 20% by weight and the balance of ethylene tetrafluoride resin. Diameter 10
The end surface of a rod-shaped object having a height of 14 mm and a height of 14 mm was used as a sliding surface. (C) 15% by weight of Teflon 7AJ (trade name), a tetrafluoroethylene resin manufactured by Du Pont-Mitsui Fluorochemicals Co., Ltd., Lubron L-5, a tetrafluoroethylene resin manufactured by Daikin Industries, Ltd.
(Trade name) 25% by weight, the balance being a molded article of a resin composition comprising polyphenylene sulfide “Topren PPST-4 (trade name)” manufactured by Topren Corporation. The end surface of a rod-shaped object having a diameter of 10 mm and a height of 14 mm was used as a sliding surface. (D) A molded article of a resin composition comprising 5% by weight of mineral oil and the balance polyacetal “Duracon M90 (trade name)” manufactured by Polyplastics. The end surface of a rod-shaped object having a diameter of 10 mm and a height of 14 mm was used as a sliding surface. (E) Kureha Chemical Co., Ltd. diameter 18 μm, length 0.7 m
m carbon fiber “Kureka chop M-107T (trade name)” 20% by weight, 4 × 6 mm cotton cloth strip 25% by weight,
A molded product of a resin composition comprising 5% by weight of graphite and the balance of phenolic resin. The end surface of a rod-shaped object having a diameter of 10 mm and a height of 14 mm was used as a sliding surface.

With respect to the above combination of the first sliding member and the second sliding member, the sliding characteristics were evaluated by the following method.

Reciprocal sliding test 1: The friction coefficient and the amount of wear were measured under the conditions shown in Table 4.

[0045]

[Table 4] Sliding speed: 20 cm / sec Load: 200 kgf / cm ² stroke: 220 mm Number of cycles: 500 cycles

Tables 5 to 8 show the combinations of the first sliding member and the second sliding member and the evaluation results. Here, the friction coefficient indicates the dynamic friction coefficient at the time of stability after the start of the test, and the wear amount is 50
The dimensional change of the first sliding member and the weight change of the second sliding member after 0 cycles are shown.

[0047]

[Table 5] (Below)

[0048]

[Table 6]

[0049]

[Table 7]

[0050]

[Table 8]

As described above, in the case of the combination of the examples of the present invention, in each case, the coefficient of friction was low, and the amount of wear was low for both the first sliding member and the second sliding member. there were. On the other hand, in the case of the combination of the comparative example, the friction coefficient is high in each case, and the amount of wear of the second sliding member is large. In the case of the combination of Ck, Dk, and Ek As a result, the coating of the first sliding member was completely worn away, exposing the base.

Reciprocating sliding test 2: The friction coefficient was measured under the conditions shown in Table 9.

[0053]

[Table 9] Sliding speed: 20 cm / sec Load: 200 kgf / cm ² strokes: 220 mm Cycle number: 100 cycles Operation was repeated 5 times with 5 minutes pause.

Tables 10 to 11 show the combinations of the first sliding member and the second sliding member and the evaluation results. Here, the friction coefficient indicates a static friction coefficient.

[0055]

[Table 10] (Below)

[0056]

[Table 11]

From the above results, it can be seen that in the combination of the examples of the present invention, the coefficient of static friction is low and stable. On the other hand, in the case of the combination of the comparative example, although the value is stable, the value of the static friction coefficient is high.

Next, a description will be given of a slide bearing device to which a sliding structure combining the above two sliding members is applied. FIG. 1 shows a sliding bearing device having a flat sliding surface, and FIGS. 2 and 3 show a sliding bearing device having a spherical sliding surface.

In FIG. 1, a sliding bearing device 1 includes a flat member 2 as a first sliding member, and an opposing member as a second sliding member abutting on the flat member 2 so as to be slidable in the horizontal direction. 3 is provided.

The flat member 2 includes a flat member body 11 formed of a material such as steel, and one surface 12 of the flat member body 11.
Lubricating film 1 made of thermosetting synthetic resin integrally formed on
3 is provided. The lubricating film 13 is made of an epoxy resin,
It is composed of a composition comprising a curing agent and silicone oil. The exposed surface (upper surface) 14 of the lubricating film 13 serving as a sliding surface is formed flat.

The facing member 3 is formed from a material such as steel.
An opposing member main body 22 having a concave portion 21 on its lower surface, and a sliding body 23 made of synthetic resin and partially mounted in the concave portion 21 of the opposing member 3 are provided. The exposed surface (lower surface) 24 of the sliding body 23 serving as a sliding surface is formed flat.

The sliding bearing device 1 configured as described above
The opposing member 3 is disposed on the upper structure 31 side, and is fixed to the upper structure 31 with bolts or the like, for example.
Are arranged on the ground side, and are fixed to the foundation 32 on the ground side with anchor bolts or the like for use. Further, the slide bearing device 1 is used in combination with origin return means such as laminated rubber or a horizontal spring. Then, when a horizontal vibration occurs in the foundation 32 on the ground side due to an earthquake or the like, a slip displacement occurs between the exposed surfaces 14 and 24 of the plane member 2 and the opposing member 3, thereby causing the horizontal movement of the foundation 32 on the ground side. The transmission of the vibration to the upper structure 31 is prevented, and the upper structure 31 is protected from the seismic vibration.

Further, in the sliding bearing device 1, the sliding surface of the flat member 2 is formed of a lubricating film 13 made of a thermosetting synthetic resin composed of a composition comprising an epoxy resin, a curing agent and a silicone oil. Since the sliding body 23 of the opposing member 3 slidably abutting on the sliding member 23 is formed of a synthetic resin, the sliding displacement between the flat member 2 and the opposing member 3 is performed with almost no resistance, so that a medium-scale earthquake vibration Needless to say, even in the case of a small-scale earthquake vibration having relatively small acceleration, the transmission of the horizontal vibration of the foundation 32 to the upper structure 31 can be prevented, and the upper structure 31 can be effectively prevented from the earthquake vibration. Can be protected.

The sliding bearing device 41 shown in FIG. 2 is disposed between concave spherical members 42 and 43 disposed opposite each other as a first sliding member, and between the concave spherical members 42 and 43.
An intervening member 44 is provided as a second sliding member slidably in contact with each of the concave spherical members 42 and 43.

The concave spherical member 42 is composed of a concave spherical member main body 51 formed of a material such as steel, and a lubricating coating 53 made of a thermosetting synthetic resin integrally formed on the concave spherical surface 52 of the concave spherical member main body 51. Is provided. The lubricating film 53 is composed of a composition including an epoxy resin, a curing agent, and silicone oil. The exposed surface (upper surface) 54 of the lubricating film 53 serving as a sliding surface is formed as a part of a spherical surface having a radius of curvature R1.

The concave spherical member 43 includes a concave spherical member main body 61 formed of a material such as steel, and a lubricating coating 63 made of a thermosetting synthetic resin integrally formed on the concave spherical surface 62 of the concave spherical member main body 61. Is provided. The concave spherical member main body 61 includes a base 64 and a columnar or prism-shaped hanging portion 65 integrally formed on the lower surface of the base 64.
5, a concave spherical surface 62 is formed on the lower surface. Lubricant coating 63
Is composed of a composition comprising an epoxy resin, a curing agent and a silicone oil. Lubricating film 6 to be a sliding surface
The exposed surface (lower surface) 66 of No. 3 has a radius of curvature R2 (<R1).
Is formed as a part of the spherical surface having

The intervening member 44 is made of a material such as steel and formed in a hemispherical shape, and a slide made of synthetic resin is attached to the intervening member main body 71 so as to cover the entire surface of the intervening member main body 71. A moving layer 72. The lower exposed surface (lower surface) 73 of the sliding layer 72 is formed as a part of a spherical surface having a radius of curvature R1 and slidably contacts the exposed surface 54, and the upper exposed surface of the sliding layer 72. The (upper surface) 74 is formed as a part of a spherical surface having a radius of curvature R2, and slidably contacts the exposed surface 66.

The sliding bearing device 4 configured as described above
1, a concave spherical member 43 is arranged on the upper structure 31 side,
For example, it is fixed to the upper structure 31 by a bolt or the like,
The concave spherical member 42 is disposed on the ground side, and
Is fixed with anchor bolts and used. The slide bearing device 41 may be used in parallel with the origin return means such as a laminated rubber or a horizontal spring as in the case of the slide bearing device 1, but it uses its own origin return function without using the origin return means. May be used. When horizontal vibration occurs in the ground-side foundation 32 due to an earthquake or the like, a slip displacement occurs between each of the concave spherical members 42 and 43 and the intervening member 44, thereby causing the ground-side foundation 32 to move in the horizontal direction. The transmission of the vibration to the upper structure 31 is prevented, and the upper structure 31 is protected from the seismic vibration.

Further, in the sliding bearing device 41, each of the sliding surfaces of the concave spherical members 42 and 43 is made of epoxy resin,
A sliding layer 7 of an intervening member 44 formed of lubricating films 53 and 63 made of a thermosetting synthetic resin composed of a composition comprising a curing agent and a silicone oil, and slidably in contact therewith.
2 was formed of a synthetic resin, so that the concave spherical members 42 and 43
Is performed with almost no resistance, and the same effect as the sliding bearing device 1 can be exerted.

The sliding bearing device 81 shown in FIG. 3 is disposed between concave spherical members 82 and 83, which are opposed to each other, as the first sliding member, and is disposed between the concave spherical members 82 and 83.
An intervening member 84 is provided as a second sliding member slidably in contact with each of the concave spherical members 82 and 83.

The concave spherical member 82 has a concave spherical member main body 85 formed of a material such as steel, and a lubricating coating 87 made of a thermosetting synthetic resin integrally formed on the concave spherical surface 86 of the concave spherical member main body 85. Is provided. The lubricating coating 87 is composed of a composition including an epoxy resin, a curing agent, and silicone oil. The exposed surface (upper surface) 88 of the lubricating coating 87 serving as a sliding surface is formed as a part of a spherical surface having a radius of curvature R1.

The concave spherical member 83 is formed in the same manner as the concave spherical member 82, and is formed integrally with a concave spherical member main body 89 formed of a material such as steel and a concave spherical surface 90 of the concave spherical member main body 89. And a lubricating coating 91 made of a thermosetting synthetic resin. The lubricating film 91 is composed of a composition including an epoxy resin, a curing agent, and silicone oil. Exposed surface (lower surface) 92 of lubricating film 91 serving as a sliding surface
Is formed as a part of a spherical surface having a radius of curvature R1.

The intervening member 84 is a sliding body composed of a flat intervening member main body 93 formed of a material such as steel, and a synthetic resin partially embedded in and attached to a concave portion 94 on the lower surface of the intervening member main body 93. 95 and a sliding body 97 made of synthetic resin and partially embedded in and attached to the concave portion 96 on the upper surface of the intervening member main body 93. Lower exposed surface (lower surface) 9 of each of sliding bodies 95 and 97 serving as sliding surfaces
8 and the upper exposed surface (upper surface) 99 are each formed as a part of a spherical surface having a radius of curvature R1, and slidably contact the facing exposed surfaces 88 and 92, respectively.

The sliding bearing device 8 configured as described above
1, a concave spherical member 83 is disposed on the upper structure 31 side in the same manner as the slide bearing device 41;
1, the concave spherical member 82 is disposed on the ground side, and is fixed to the ground side foundation 32 by an anchor bolt or the like for use. Similarly to the slide bearing device 1, the slide bearing device 81 may be used in parallel with origin return means such as a laminated rubber or a horizontal spring. However, the original return function is used without using the origin return means. May be used. When horizontal vibration occurs in the ground-side foundation 32 due to an earthquake or the like, a slip displacement occurs between each of the concave spherical members 82 and 83 and the intervening member 84, thereby causing the ground-side foundation 32 to move in the horizontal direction. The transmission of the vibration of the upper structure 31 to the upper structure 31 is prevented, and the upper structure 31 is protected from the seismic vibration.
The sliding surfaces of Nos. 2 and 83 are formed of lubricating films 87 and 91 made of a thermosetting synthetic resin composed of a composition comprising an epoxy resin, a curing agent and a silicone oil, and slidably contact with these. Since the sliding members 95 and 97 of the interposition member 84 are formed of synthetic resin, the concave spherical members 82 and 8 are formed.
Since the sliding displacement between each of the members 3 and the interposition member 84 is performed with almost no resistance, the same effect as the sliding bearing devices 1 and 41 can be exhibited.

The whole of the intervening members 44 and 84 may be formed of a sliding body made of synthetic resin. In addition, the sliding surfaces of the slide bearing devices 41 and 81 are formed as a part of the spherical surface, but may be formed as a part of a cylindrical surface instead. It is sufficient that a sliding surface is formed. Further, instead of the above-described embodiment, the flat member 2, the concave spherical members 42 and 43, and the concave spherical members 82 and 83 are provided with a sliding body made of synthetic resin, and the facing member 3 and the intervening members 44 and 84 are provided. A lubricating film made of a thermosetting synthetic resin may be provided.

[0076]

As described above, according to the present invention, there are provided two slides which have a stable and low coefficient of static friction and dynamic friction, and perform accurate and effective low friction slip when slip is required. A sliding structure combining a moving member and a slide bearing device using the sliding structure can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view of a preferred embodiment of a slide bearing device to which a sliding structure according to the present invention is applied.

FIG. 2 is a sectional view of another preferred embodiment of a slide bearing device to which the sliding structure of the present invention is applied.

FIG. 3 is a sectional view of still another preferred embodiment of the sliding bearing device to which the sliding structure of the present invention is applied.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sliding bearing device 2 Planar member 3 Opposing member 13 Lubricant coating 14 Exposed surface (upper surface) 23 Sliding body 24 Exposed surface (lower surface)

Continued on the front page F term (reference) 3J011 QA05 RA02 RA03 SA03 SA05 SA06 SC01 SC04 SC20 SE02 SE06 SE10 3J048 AA06 AC01 BD01 BE12 BG01 DA01 4F071 AA41 AA42 AA54 AA67 AB03 AB27 AC09 AC12 AC13 AF28 AH12 AH17 EA01 EA04

Claims (16)

[Claims] 1. A sliding structure in which a first sliding member and a second sliding member that are in sliding contact with each other on a sliding surface are combined,
The sliding surface of the first sliding member is made of a lubricating film made of a thermosetting synthetic resin, the sliding surface of the second sliding member is made of a synthetic resin,
A sliding structure in which two sliding members are combined, wherein the lubricating coating is a coating of a composition comprising an epoxy resin, a curing agent and a silicone oil. 2. When the mixing weight ratio of the epoxy resin and the curing agent is represented by E where the epoxy equivalent of the epoxy resin is E,
(Epoxy resin): (Curing agent) = E: 10 to E: 300
A sliding structure comprising a combination of the two sliding members according to claim 1. 3. When the weight ratio of the silicone oil is 100 parts by weight of the sum of the epoxy resin and the curing agent,
A sliding structure comprising two sliding members according to claim 1 or 2 in an amount of 2 to 20 parts by weight. 4. The composition for forming a lubricating film is obtained by adding an epoxy resin, a curing agent, and a silicone oil, and further adding an inorganic and organic filler powder to a total of 100 parts by weight of the epoxy resin and the curing agent. A sliding structure comprising the two sliding members according to any one of claims 1 to 3, wherein the sliding member contains 2 to 10 parts by weight. 5. The silicone oil is selected from dimethyl silicone oil and silicone oil in which a part of methyl groups of dimethyl polysiloxane is substituted with a polyether group, a phenyl group, an alkyl group, an aralkyl group or a fluorinated alkyl group. A sliding structure in which the two sliding members according to any one of claims 1 to 4 are combined. 6. Silicone oils include carboxyl-modified silicone oil, carbinol-modified silicone oil, epoxy-modified silicone oil having an epoxy group at both terminals, and epoxy-modified silicone oil having an epoxy group in a side chain having an epoxy equivalent of more than 1000. A sliding structure comprising a combination of two sliding members according to any one of claims 1 to 4, wherein the sliding structure is selected from the group consisting of: 7. The synthetic resin contains at least one selected from lubricating oil, grease, wax, graphite, molybdenum disulfide, fluororesin, glass powder, glass fiber, carbon powder, carbon fiber, and aramid fiber. , Claim 1
A sliding structure in which the two sliding members according to any one of the above items 1 to 6 are combined. 8. A sliding bearing device which generates a slip during an earthquake and performs a seismic isolation action, wherein the first sliding member having a sliding surface made of a lubricating coating made of a thermosetting synthetic resin, and the sliding surface being a composite. A second sliding member made of a resin and a sliding structure in which the second sliding member is combined so as to make sliding contact with each other on a sliding surface, wherein the lubricating coating is made of a composition comprising an epoxy resin, a curing agent and a silicone oil. A sliding bearing device characterized by being a coating. 9. The slide bearing device according to claim 8, wherein the sliding surfaces of the first sliding member and the second sliding member that are in sliding contact with each other are flat. 10. The first sliding member has a concave spherical surface having a predetermined radius of curvature, and the second sliding member has a convex spherical surface having the same radius of curvature as the concave spherical surface. 9. The slide bearing device according to claim 8, wherein the convex spherical surface makes sliding contact with the concave spherical surface. 11. When the compounding weight ratio of the epoxy resin and the curing agent is represented by E where the epoxy equivalent of the epoxy resin is E,
(Epoxy resin): (Curing agent) = E: 10 to E: 300
The slide bearing device according to any one of claims 8 to 10, wherein: 12. The compounding weight ratio of silicone oil is as follows:
The slide bearing device according to any one of claims 8 to 11, wherein the amount is 2 to 20 parts by weight when the sum of the epoxy resin and the curing agent is 100 parts by weight. 13. The composition for forming a lubricating film may comprise, in addition to an epoxy resin, a curing agent and a silicone oil, an inorganic and organic filler powder in which the sum of the epoxy resin and the curing agent is 100 parts by weight. The slip bearing device according to any one of claims 8 to 12, wherein 2 to 10 parts by weight is contained. 14. The silicone oil may be dimethyl silicone oil or silicone oil in which a part of methyl groups of dimethylpolysiloxane is substituted with a polyether group, a phenyl group, an alkyl group, an aralkyl group or a fluorinated alkyl group. Selected from claims 8 to 1
The sliding bearing device according to any one of the above items 3. 15. Silicone oils include a carboxyl-modified silicone oil, a carbinol-modified silicone oil, an epoxy-modified silicone oil having an epoxy group at both ends, and an epoxy-modified silicone oil having an epoxy group in a side chain having an epoxy equivalent of more than 1000. The sliding bearing device according to any one of claims 8 to 13, which is selected from any of the following. 16. The synthetic resin contains at least one selected from lubricating oil, grease, wax, graphite, molybdenum disulfide, fluororesin, glass powder, glass fiber, carbon powder, carbon fiber, and aramid fiber. , Claim 8
The sliding bearing device according to any one of claims 1 to 15.