WO2013061538A1 - 高負荷伝動用vベルト及びその製造方法 - Google Patents
高負荷伝動用vベルト及びその製造方法 Download PDFInfo
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- WO2013061538A1 WO2013061538A1 PCT/JP2012/006598 JP2012006598W WO2013061538A1 WO 2013061538 A1 WO2013061538 A1 WO 2013061538A1 JP 2012006598 W JP2012006598 W JP 2012006598W WO 2013061538 A1 WO2013061538 A1 WO 2013061538A1
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- Prior art keywords
- belt
- high load
- load transmission
- block
- carbon fiber
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G5/00—V-belts, i.e. belts of tapered cross-section
- F16G5/04—V-belts, i.e. belts of tapered cross-section made of rubber
- F16G5/06—V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber
- F16G5/08—V-belts, i.e. belts of tapered cross-section made of rubber with reinforcement bonded by the rubber with textile reinforcement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G5/00—V-belts, i.e. belts of tapered cross-section
- F16G5/16—V-belts, i.e. belts of tapered cross-section consisting of several parts
- F16G5/166—V-belts, i.e. belts of tapered cross-section consisting of several parts with non-metallic rings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D29/00—Producing belts or bands
- B29D29/10—Driving belts having wedge-shaped cross-section
Definitions
- the present invention relates to a V-belt for high load transmission and a manufacturing method thereof.
- Patent Document 1 discloses such a high-load transmission V-belt in which a block has a configuration in which a reinforcing material made of aluminum is covered with a resin coating layer.
- the high-load transmission V-belt of the present invention includes an endless tension band and a plurality of blocks that are arranged so as to be aligned in the length direction of the tension band and are locked to the tension band.
- Each of the plurality of blocks includes a reinforcing structure material formed of carbon fibers and a resin coating layer provided so as to cover the reinforcing structure material.
- the method for manufacturing a V-belt for high load transmission includes a block molding step in which a reinforcing structural member formed of carbon fiber is disposed in a cavity of a block molding die and an unsolidified resin material is supplied into the cavity. .
- FIG. 1 It is a perspective view of the V belt for high load transmission. It is II-II sectional drawing in FIG. It is a side view of a tension belt. It is a side view of a block.
- (A) And (b) is a figure which shows the fixation aspect to the sheet-like base material of a carbon fiber thread
- (A)-(d) is a figure which shows the orientation pattern of a carbon fiber yarn.
- A) And (b) is a figure which shows the pulley layout of a belt-type continuously variable transmission. It is a figure which shows shaping
- (A)-(c) is a schematic diagram of a belt running test machine.
- V-belt B for high load transmission 1 and 2 show a V belt B for high load transmission according to the present embodiment.
- the high load transmission V-belt B according to this embodiment is used for a belt type continuously variable transmission in an automobile or the like, for example.
- the high load transmission V-belt B includes a pair of endless tension bands 10 and a plurality of blocks 20, and the plurality of blocks 20 are arranged in the length direction of the pair of tension bands 10 and at a constant pitch. They are arranged with a space between each other, and each has a configuration in which it is locked and fixed to a pair of tension bands 10.
- the high load transmission V-belt B has, for example, a belt length (dimension in the belt length direction at a center line center position described later in the tension band 10) of 480 to 750 mm, and a belt pitch width (center line center in the tension band 10).
- Position dimension in the belt width direction is 20 to 30 mm
- the belt thickness is 10 to 16.5 mm
- the number of blocks 20 is 96 to 375
- the block pitch is 2 to 5 mm
- the distance between the blocks 20 is 0. 01 to 0.5 mm.
- FIG. 3 shows the tension band 10.
- Each tension band 10 is formed in an endless flat band shape. Each tension band 10 is chamfered on one side on the upper side and the lower side, and the other side is formed on an inclined surface. Each tension band 10 has upper fitting recesses 11a formed of U-shaped cross sections extending in the belt width direction on the upper surface side (outer peripheral surface side) at a constant pitch in the belt length direction, and upper fitting recesses 11a. Are formed on the lower surface side (inner peripheral surface side) at a constant pitch in the belt length direction. Each tension band 10 has, for example, a length of 480 to 750 mm, a width of 6 to 13 mm, and a thickness of 1.0 to 5.0 mm (preferably 1.5 to 3.0 mm). In particular, the thickness t 1 of the thinnest portion between the bottoms of the upper fitting recess 11a and the lower fitting recess 11b is, for example, 0.606 to 3.0 mm (preferably 0.606 to 1.5 mm).
- Each tension band 10 is composed of a shape-retaining rubber layer 12 in the tension band body.
- a core wire 13 is embedded in the shape-retaining rubber layer 12 so as to form a spiral having a pitch in the belt width direction at substantially the center in the belt thickness direction.
- An upper reinforcing cloth 14 is attached to the shape retaining rubber layer 12 so as to cover the upper surface side surface.
- a lower reinforcing cloth 15 is attached to the shape retaining rubber layer 12 so as to cover the lower surface.
- the tension band 10 may be composed of only the shape-retaining rubber layer 12 and the core wire 13 without the upper reinforcing cloth 14 and the lower reinforcing cloth 15 being provided.
- the shape-retaining rubber layer 12 is formed of a rubber composition in which an uncrosslinked rubber composition obtained by blending various rubber compounding ingredients with a rubber component and kneaded is heated and pressurized to be crosslinked with a crosslinking agent.
- Examples of rubber components include ethylene- ⁇ such as hydrogenated acrylonitrile rubber (H-NBR), ethylene / propylene copolymer (EPR), ethylene / propylene / diene terpolymer (EPDM), ethylene / octene copolymer, and ethylene / butene copolymer. -Olefin elastomers, chloroprene rubber (CR), chlorosulfonated polyethylene rubber (CSM) and the like.
- the rubber component may be hydrogenated acrylonitrile rubber (H-NBR) reinforced with an unsaturated carboxylic acid metal salt such as zinc dimethacrylate or zinc diacrylate.
- the rubber component may be composed of a single species or a blend of a plurality of species.
- compounding agents include vulcanization accelerators, plasticizers, reinforcing materials, anti-aging agents, co-crosslinking agents, and crosslinking agents.
- the vulcanization accelerator examples include metal oxides such as magnesium oxide and zinc oxide (zinc white), fatty acids such as metal carbonates and stearic acid, and derivatives thereof.
- the vulcanization accelerator may be composed of a single species or a plurality of species.
- the blending amount of the vulcanization accelerator with respect to 100 parts by mass of the rubber component is, for example, 5 to 15 parts by mass.
- plasticizer examples include phthalic acid derivatives, isophthalic acid derivatives, tetrahydrophthalic acid derivatives, adipic acid derivatives, azelaic acid derivatives, sebacic acid derivatives, dodecane-2-acid derivatives, maleic acid derivatives, fumaric acid derivatives, trimellitic acid. Derivatives, pyromellitic acid derivatives, citric acid derivatives, itaconic acid derivatives, oleic acid derivatives, ricinoleic acid derivatives, stearic acid derivatives, sulfonic acid derivatives, phosphoric acid derivatives, glutaric acid derivatives, glycol derivatives, glycerin derivatives, paraffin derivatives, epoxy derivatives Etc.
- the plasticizer may be composed of a single species or a plurality of species. The compounding amount of the plasticizer with respect to 100 parts by mass of the rubber component is, for example, 5 to 15 parts by mass.
- a reinforcing material for example, carbon black, channel black; furnace black such as SAF, ISAF, N-339, HAF, N-351, MAF, FEF, SRF, GPF, ECF, N-234; FT, MT, etc. Thermal black; acetylene black.
- Silica is also mentioned as a reinforcing agent.
- the reinforcing agent may be composed of a single species or a plurality of species.
- the compounding amount of the reinforcing material with respect to 100 parts by mass of the rubber component is, for example, 5 to 100 parts by mass.
- the reinforcing material include organic short fibers such as aramid short fibers and nylon short fibers, and inorganic short fibers such as carbon short fibers. These reinforcing short fibers may be blended or not blended. When reinforcing short fibers are blended, they are preferably provided so as to be oriented in the belt width direction.
- Antiaging agents include amine-based, quinoline-based, hydroquinone derivatives, phenol-based, phosphite-based compounds, and the like.
- the anti-aging agent may be composed of a single species or a plurality of species.
- the blending amount of the anti-aging agent with respect to 100 parts by mass of the rubber component is, for example, 0.1 to 10 parts by mass.
- co-crosslinking agent examples include bismaleimide co-crosslinking agent, TAIC, 1,2-polybutadiene, unsaturated carboxylic acid metal salt, oximes, guanidine, trimethylolpropane trimethacrylate, and the like.
- bismaleimide co-crosslinking agents are preferred, and specific bismaleimide co-crosslinking agents include, for example, N, Nm-phenylene bismaleimide, 4,4′-diphenylmethane bismaleimide, 4-methyl-1 , 3-phenylene bismaleimide, 1,6′-bismaleimide- (2,2,4-trimethyl) hexane, bisphenol A diphenyl ether bismaleimide, 3,3′-dimethyl-5,5′-diethyl-4,4 ′ -Diphenylmethane bismaleimide, 4,4'diphenyl ether bismaleimide, 4,4'-diphenylsulfone bismaleimide, 1,3-bis (3-maleimidophenoxy) benzene, 1,3-bis (4-maleimidophenoxy) benzene, etc. Can be mentioned.
- the co-crosslinking agent may be composed of a single species or a plurality of species. The compounding amount of the co-crosslink
- the crosslinking agent examples include sulfur and organic peroxides.
- a crosslinking agent only sulfur may be used, only an organic peroxide may be used, and both of them may be used in combination.
- the crosslinking agent is preferably used in an amount of 0.1 to 5 parts by mass with respect to 100 parts by mass of the rubber component. ⁇ 10 parts by mass.
- the crosslinking agent is preferably an organic peroxide.
- the organic peroxide include, for example, diacyl peroxide, peroxy ester, t-butylcumyl peroxide, dicumyl peroxide (DCP), 2,5-dimethyl-2,5-di (t-butyl peroxide).
- the core wire 13 is composed of a high-strength fiber twisted yarn or braid, such as aramid fiber, PBO fiber, or carbon fiber, which has been subjected to an adhesive treatment.
- the core wire 13 is formed of, for example, a filament bundle of 800 to 1200 dtex and has an outer diameter of 0.5 to 1.4 mm.
- the adhesive treatment of the core wire 13 is configured by performing a first treatment that is heated after being immersed in a treatment solution of an epoxy solution or an isocyanate solution, and a second treatment that is heated after being immersed in an RFL aqueous solution. After the second treatment, a third treatment for drying after dipping in the rubber paste may be performed, but it is preferable that this third treatment is not performed.
- the treatment liquid used for the first treatment is an aqueous solution of an epoxy compound or an isocyanate compound or a solution containing toluene or methyl ethyl ketone as a solvent.
- the RFL aqueous solution used for the second treatment is a mixed aqueous solution of resorcin (R) -formalin (F) precondensate aqueous solution and rubber latex (L).
- This rubber latex is preferably a carboxylated hydrogenated nitrile rubber (carboxylated H-NBR) latex.
- the rubber paste used in the third treatment is a solution obtained by dissolving rubber and resin in toluene, methyl ethyl ketone or the like, or a commercially available rubber adhesive.
- Each of the upper and lower reinforcing cloths 14 and 15 is immersed in an epoxy solution or an isocyanate solution and then heated in a woven fabric, a knitted fabric or a nonwoven fabric such as an aramid fiber or a nylon fiber, and after being immersed in an RFL aqueous solution. It comprises a second treatment to be heated and a third treatment to be dried after dipping or coating the rubber paste as necessary.
- Each of the upper and lower reinforcing cloths 14 and 15 has a thickness of 0.2 to 0.4 mm, for example.
- FIG. 4 shows the block 20.
- Each block 20 is formed with a slit-like fitting portion 22 opened laterally on each side surface portion 21 in the belt width direction of a trapezoidal plate-like body whose upper base is longer than the lower base in plan view.
- the shape is such that the letter “H” is horizontal.
- Each block 20 is formed so that the upper part from the fitting part 22 has a uniform thickness in a side view, while the lower part from the fitting part 22 becomes thinner as it goes downward. .
- Each block 20 has, for example, a height of 10 to 16.5 mm, a width of 20 to 30 mm, and a thickness of 2 to 5 mm.
- the angle formed by both sides, that is, the belt angle is, for example, 15 to 26 °.
- Each fitting portion 22 of each block 20 is formed so as to extend horizontally at a uniform interval from the inner back portion toward the side opening.
- Each fitting portion 22 has an upper fitting convex portion 22a formed of a semicircular cross-sectional protrusion extending in the belt width direction on the upper surface side, and a cross-section arc-shaped protrusion extending in the belt width direction on the lower surface side.
- a lower fitting convex portion 22b made of a strip is formed.
- Each fitting portion 22 includes a surface in which the back portion is continuously inclined from the upper side surface to the back side and a surface that is continuously outwardly inclined from the surface and continues to the lower side surface.
- Each fitting portion 22 has, for example, a gap t 2 in the belt thickness direction of 1 to 3 mm and a depth in the belt width direction of 2 to 5 mm.
- Each block 20 has a configuration in which a reinforcing structural member 23 arranged in the center so as to form a skeleton is covered with a resin coating layer 24. Note that the entire reinforcing structural member 23 does not need to be covered with the resin coating layer 24, and at least the contact portion with the tension band 10 and both side surface portions 21 (upper side surface portions above the fitting portion 22) constituting the pulley contact surface. And the lower side surface portion below the fitting portion 22), and the reinforcing structural member 23 may be exposed in other portions.
- the reinforcing structural member 23 is formed in a shape with the letter “H” on its side as in the block 20, and the center pillars 23 c vertically move between the center portions of the upper and lower beams 23 a and 23 b extending in the belt width direction. It has the structure which was connected to.
- the height of the upper beam 23a is 5.0 to 9.5 mm
- the height of the lower beam 23b is 5.0 to 9.5 mm.
- the reinforcing structural member 23 is made of carbon fiber.
- the carbon fiber may be polyacrylonitrile-based carbon fiber (PAN-based carbon fiber), may be pitch-based carbon fiber, or may be a mixture of them.
- PAN-based carbon fiber polyacrylonitrile-based carbon fiber
- the carbon fiber is preferably subjected to a surface treatment with a silane coupling agent or the like.
- the filament diameter of the carbon fiber is, for example, 4 to 20 ⁇ m.
- the reinforcing structural member 23 may be formed of carbon fiber filament yarn or may be formed of carbon fiber spun yarn.
- the filament yarn of carbon fiber may be twisted or untwisted.
- the filament yarn or spun yarn of carbon fiber may be wound with carbon fiber.
- the fineness of the carbon fiber filament yarn or spun yarn is, for example, 50 to 2000 tex.
- the reinforcing structural member 23 may be formed of a composite yarn of the above-described carbon fiber filament yarn or spun yarn and other fibers.
- fibers other than carbon fiber include synthetic fibers such as polyethylene fiber, polypropylene fiber, polyester fiber, nylon fiber, aramid fiber, and PBO fiber, natural fibers such as cotton and hemp, and metal fibers such as glass fiber and steel wire. Is mentioned.
- thermoplastic resin fibers that melt at the molding temperature are preferred from the viewpoint that the integrity is enhanced by melting at the time of block molding and being compatible with the resin coating layer 24.
- the composite yarn may have a configuration in which fibers other than carbon fibers are vertically attached inside or outside the fiber bundle of carbon fiber filament yarn or spun yarn, and the carbon fiber filament yarn or spun yarn other than carbon fiber
- the configuration may be a configuration in which the fibers are wound and sewed, or may be a configuration in which they are combined.
- the yarn In a configuration in which fibers other than carbon fibers are vertically attached inside or outside a fiber bundle of carbon fiber filament yarn or spun yarn, the yarn may be twisted or untwisted.
- the ratio of the carbon fiber to the other fibers may be such that the former may be more than the latter, the former may be less than the latter, and the former and the latter may be the same. Good.
- the fineness of fibers other than carbon fibers is, for example, 50 to 30000 tex.
- Such a composite yarn is disclosed in Japanese Patent Application Laid-Open No. 2010-121250.
- the reinforcing structural member 23 may be formed of a knitting yarn configured in a braid shape by collecting a plurality of carbon fiber filament yarns or spun yarns.
- the reinforcing structural member 23 has a carbon fiber filament yarn, spun yarn, composite yarn, or knitting yarn (hereinafter referred to as “carbon fiber yarn T”) in a block shape. It may be configured to be fixed to the sheet-like substrate 25.
- a method for producing a carbon fiber reinforced resin molded article in which carbon fiber is preliminarily molded using a plate-like prepreg obtained by hardening an epoxy resin or the like and then placed in an autoclave or the like to cure the resin, or a carbon fiber woven In the method of manufacturing a carbon fiber reinforced resin molded product in which a cloth or the like is cut into a predetermined shape and placed in a cavity of a mold, and an unsolidified resin material is supplied and cured there, by pre-molding or cutting a woven cloth, etc.
- the sheet-like substrate 25 include thermoplastic resin sheets such as polyethylene resin sheets and polypropylene resin sheets; woven fabrics and knitted fabrics formed of synthetic fibers such as polyethylene fibers, polyester fibers, nylon fibers, aramid fibers, and PBO fibers. And non-woven fabric.
- a thermoplastic resin sheet such as a polyethylene resin sheet having a melting point of 130 ° C. or less, a polyethylene fiber, etc.
- a woven fabric, a knitted fabric or a non-woven fabric formed of the thermoplastic resin fibers is preferred.
- the thickness of the sheet-like substrate 25 is, for example, 0.1 to 10 mm.
- the reinforcing structural member 23 has a configuration in which the sheet-like base material 25 is sewn by the carbon fiber yarn T itself and the sheet-like base material 25 is embroidered by the carbon fiber. Good. Further, as shown in FIG. 5 (b), the reinforcing structural member 23 is embroidered by sewing the carbon fiber thread T on the sheet-like base material 25 with a sewing thread 26 made of a thin carbon fiber thread or the like. It may be a configuration. Specifically, the reinforcing structural member 23 is placed, for example, while pressing the carbon fiber yarns T on the sheet-like base material 25 and sews them with a sewing thread 26 to form the carbon fiber yarns T into a sheet shape.
- the distance between the turns of the carbon fiber yarn T is preferably 1 mm or more, more preferably 2 mm or more, and further preferably 5 mm or more.
- the orientation pattern of the carbon fiber yarn T is such that the carbon fiber yarn T extends substantially in the belt width direction in the upper and lower beams 23a and 23b. It is preferable that the carbon fiber yarn T is provided in the center pillar 23c so as to extend in the belt thickness direction. Moreover, as shown in FIG.6 (b), in the upper side and lower side beam 23a, 23b, the carbon fiber yarn T is provided so that it may extend in the orthogonal
- the carbon fiber yarn T extends from the center pillar 23c to the upper and lower beams 23a and 23b. You may provide so that it may extend in the direction which inclined on both sides outward.
- the carbon fiber yarns T may be provided in multiple layers along the outline of the sheet-like substrate 25.
- the carbon fiber yarn T that reinforces the upper and lower beams 23a and 23b and the center pillar 23c is continuous, and at the joint between the upper and lower beams 23a and 23b and the center pillar 23c, A high reinforcing effect can be obtained by arranging the fiber yarns T at a high density.
- the reinforcing structural member 23 may be constituted by a prepreg arranged so that the carbon fibers are oriented in one direction.
- the reinforcing structural member 23 may be configured by cutting and laminating a prepreg sheet arranged so that carbon fibers are oriented in one direction.
- the carbon fibers are preferably provided so as to be oriented in the belt width direction.
- the reinforcing structural member 23 may be composed of a three-dimensional woven fabric formed of carbon fiber yarns T.
- the maximum length of the carbon fiber contained in the block 20 is preferably 1 mm or more, more preferably 2 mm or more, and further preferably 5 mm or more from the viewpoint that the high reinforcing effect of the block 20 is obtained.
- the content of the carbon fiber forming the reinforcing structural member 23 included in the block 20 is preferably 15 to 95% by volume, and 25 to 80% by volume from the viewpoint that the high reinforcing effect of the block 20 can be obtained. Is more preferable, and more preferably 30 to 75% by volume.
- a single reinforcing structure member 23 may be embedded, or a plurality of reinforcing structure members 23 may be stacked and embedded. Further, in addition to the reinforcing structural member 23, a thinner metal reinforcing material than that in the related art may be embedded in the block 20.
- the resin coating layer 24 is formed of a resin composition in which a resin compounding agent is blended with a matrix resin.
- the layer thickness of the resin coating layer 24 is, for example, 0.8 to 1.5 mm.
- the matrix resin of the resin composition forming the resin coating layer 24 may be a thermosetting resin or a thermoplastic resin.
- the thermosetting resin include a phenol resin and an epoxy resin.
- the thermoplastic resin include polyamide resin, polyimide resin, polycarbonate resin, and the like.
- the matrix resin may be composed of a single species or a plurality of species.
- the matrix resin may be composed only of a thermosetting resin, may be composed only of a thermoplastic resin, and is a blend of a thermosetting resin and a thermoplastic resin. Also good.
- the matrix resin may additionally contain a rubber component or the like.
- the resin coating layer 24 may be formed of a carbon short fiber reinforced resin composition in which carbon short fibers are mixed in a matrix resin.
- at least both side portions 21 constituting the pulley contact surface are formed of a carbon short fiber reinforced resin composition of a thermosetting resin containing carbon short fibers from the viewpoint of improving frictional wear resistance.
- the carbon short fibers may be polyacrylonitrile-based carbon short fibers (PAN-based carbon short fibers), pitch-based carbon short fibers, or a mixture of them.
- the blending amount of the short carbon fibers with respect to 100 parts by mass of the matrix resin is, for example, 10 to 40 parts by mass.
- the length of the short carbon fibers contained in the resin coating layer 24 is, for example, 50 to 150 ⁇ m.
- the resin composition forming the resin coating layer 24 may contain graphite powder, para-aramid short fibers, and the like.
- the para-aramid short fibers have a fiber length of 1 to 3 mm and a blending amount of 2 to 5 parts by mass with respect to 100 parts by mass of the matrix resin.
- the graphite powder has, for example, a particle size of 5 to 10 ⁇ m and a blending amount of 15 to 20 parts by mass with respect to 100 parts by mass of the matrix resin.
- the block molding resin material forming the resin coating layer 24 may contain a curing agent.
- the tension band 10 is fitted to the fitting portions 22 of the plurality of blocks 20 so as to connect them. Specifically, the tension band 10 is inserted into each fitting portion 22 of each block 20 from one side portion chamfered, and an upper fitting convex portion 22a on the upper side surface of the fitting portion 22 is formed. The upper fitting recess 11a on the upper side of the tension band 10 is fitted, and the lower fitting projection 22b on the lower side of the fitting part 22 is fitted on the lower fitting depression 11b on the lower side of the tension band 10. In addition, the tension band 10 is fitted into the fitting part 22 so that one side of the tension band 10 comes into contact with the inner part of the fitting part 22.
- a structure is formed in which a plurality of blocks 20 are locked and fixed to the endless tension band 10 so as to be spaced apart from each other at a constant pitch along the belt length direction.
- the other side surface of the surface portion 21 and the tension band 10 exposed to the outside is configured as a pulley contact surface.
- the gap t 2 of the fitting portion 22 of the block 20 is larger than the thickness t 1 between the upper and lower fitting recesses 11a and 11b of the tension band 10. Somewhat small. Accordingly, the tension band 10 is fitted into the fitting portion 22 of the block 20 in a compressed state.
- the tightening allowance t 1 -t 2 is, for example, 0.006 to 0.150 mm, and the tightening allowance is a ratio of the tightening allowance t 1 -t 2 to the gap t 2 of the gap of the fitting portion 22 of the block 20.
- the tension band 10 is provided in a state of protruding out of the block 20, whereby the high load transmission V-belt B enters the pulley.
- the impact can be reduced by the protruding tension band 10.
- the protrusion amount ⁇ d of the protruding amount is, for example, 0.02 to 0.25 mm
- the insertion width w of the tension band 10 in the belt pitch line (center line center position) is, for example, 6 to 13 mm.
- the reinforcing structural member 23 of the block 20 is formed of carbon fiber, so that it is compared with a conventional reinforcing member made of aluminum.
- the weight of the high load transmission V-belt B can be reduced.
- the weight of the block 20 is preferably reduced to 1.5 to 2.2 g / cm 3, more preferably 1.5 to 1.8 g / cm 3. More preferably, the weight is reduced to 4 to 1.6 g / cm 3 .
- the weight per belt unit length is preferably reduced to 0.25 to 0.46 g / mm.
- 7 (a) and 7 (b) show a belt type continuously variable transmission 70 using a high load transmission V-belt B according to the present embodiment.
- This belt-type continuously variable transmission 70 includes a drive shaft 71 and a driven shaft 73 arranged in parallel thereto, and a drive pulley 72 on the drive shaft 71 and substantially the same as the drive pulley 72 on the driven shaft 73.
- a diameter driven pulley 74 is provided.
- the drive pulley 72 includes a fixed sheave that is fixed to the drive shaft 71 so as to rotate integrally and non-slidably, and a movable sheave that is supported so as to rotate integrally and slidably so as to face the fixed sheave.
- the driven pulley 74 includes a fixed sheave which is fixed to the driven shaft 73 so as to be rotatable and non-slidable, and a movable sheave supported so as to be rotatable and slidably opposed to the fixed sheave.
- Each of the driving pulley 72 and the driven pulley 74 has a V-groove between the fixed sheave and the movable sheave, and the high load transmission V-belt B is wound around the V-groove of the driving pulley 72 and the driven pulley 74. It has been.
- Each of the driving pulley 72 and the driven pulley 74 is configured to be variable in a pulley pitch diameter of, for example, 40 to 150 mm.
- the power required for belt transmission is supplied on the drive shaft 71 side and consumed on the driven shaft 73 side, and the belt winding diameter of the drive pulley 72 and the winding of the driven pulley 74 are also measured.
- the travel speed of the high load transmission V-belt B is changed by changing the hook diameter. Specifically, when the movable sheave of the driving pulley 72 is brought close to the fixed sheave and the movable sheave of the driven pulley 74 is moved away from the fixed sheave, as shown in FIG. This is larger than the belt winding diameter of the driven pulley 74. As a result, the high load transmission V-belt B travels at a high speed.
- ⁇ Tension band production process> Preparation of uncrosslinked rubber composition-
- a rubber component is put into a rubber kneading machine such as a Banbury mixer and kneaded, and then a rubber compounding agent is put into this and kneaded. Then, the kneaded uncrosslinked rubber composition is processed into a sheet form by a calender roll to obtain a sheet-like uncrosslinked rubber composition.
- twisted yarn or braid is subjected to a treatment of heating after being immersed in an RFL aqueous solution and / or a treatment of drying after being immersed in rubber paste to obtain the core wire 13.
- the upper and lower reinforcing fabrics 14 and 15 are obtained by subjecting a woven fabric, knitted fabric, or nonwoven fabric to a treatment of heating after being immersed in an RFL aqueous solution and / or a treatment of immersing or coating rubber paste with a rubber paste and then drying. In addition, you may perform the process dried after immersing in an epoxy solution or an isocyanate solution to a woven fabric etc. before these processes.
- the cylindrical mold is put in a heating and pressing apparatus, and the inside of the apparatus is set to a predetermined temperature and pressure so that the crosslinking of the uncrosslinked rubber composition proceeds about half, and the state is maintained for a predetermined time. .
- the crosslinking of the uncrosslinked rubber composition proceeds about half, and the shape of the lower half of the shape-retaining rubber layer 12 is formed.
- the uncrosslinked rubber composition flows and the protrusion provided on the cylindrical mold presses the lower reinforcing cloth 15 to form the lower fitting recess 11b.
- the cylindrical mold is taken out from the heating and pressurizing apparatus, the core wire 13 is spirally wound at an equal pitch from above the semi-crosslinked rubber composition, and the sheet-like uncrosslinked rubber composition is again formed thereon.
- a predetermined layer is laminated, and an upper reinforcing cloth 14 formed in a cylindrical shape is placed thereon.
- an outermost layer is covered with a cylindrical sleeve in which protrusions extending in the axial direction of the upper fitting concave shape of the tension band 10 are provided at equal pitches in the circumferential direction of the inner peripheral surface.
- a cylindrical mold in which a material is set is placed in the heating and pressurizing device, the inside of the device is set to a predetermined temperature and pressure, and the state is maintained for a predetermined time.
- crosslinking of the semi-crosslinked rubber composition and the uncrosslinked rubber composition proceeds to form the shape retaining rubber layer 12.
- the uncrosslinked rubber composition flows and the protrusion provided on the sleeve presses the upper reinforcing cloth 14 to form the upper fitting recess 11a.
- the adhesive on the surface of the core wire 13 and the shape-retaining rubber layer 12 are mutually diffused, whereby the core wire 13 is integrally bonded to the shape-retaining rubber layer 12 and is attached to the upper and lower reinforcing cloths 14 and 15.
- the upper and lower reinforcing cloths 14 and 15 are integrally bonded to the shape-retaining rubber layer 12.
- a cylindrical slab is formed on the surface of the cylindrical mold.
- the cylindrical mold is taken out from the heating and pressurizing device, the cylindrical slab formed on the peripheral surface is removed from the mold, and the strip is cut into a band with a predetermined width and subjected to chamfering or the like, thereby performing a tension band. Get 10.
- ⁇ Block molding process> Preparation of resin material for block molding-
- a matrix resin and a resin compounding agent are charged into a resin kneader such as a biaxial kneader and kneaded, and the recovered kneaded material is pulverized to be pulverized or granulated to obtain a resin material for block molding.
- the viscosity of the unsolidified resin material is lower. It can be controlled by setting conditions.
- the block molding step can be performed by injection molding.
- RIM reaction / Injection / Molding
- RTM using a low-viscosity non-solidified resin material M for block molding
- Resin (Molding) molding is preferable.
- VaRTM Vauum assisted Resin Transfer Molding
- the reinforcing structural member 23 is formed of a composite yarn of carbon fibers and thermoplastic resin fibers, the thermoplastic resin fibers around the carbon fibers are melted by heat and impregnated into the carbon fibers.
- This block molding process can also be performed by press molding.
- the mold 80 After cooling the mold 80, the mold is opened and the block 20 is taken out.
- the matrix resin is a thermosetting resin
- the annealing temperature is, for example, 190 to 195 ° C.
- the annealing time is, for example, 2 to 4 hours.
- the upper and lower fitting concave portions 11a and 11b of one tension band 10 are respectively associated with the upper and lower fitting convex portions 22a and 22b of the block 20, and the upper and lower fitting concave portions 11a and 11b are respectively upper and lower.
- the tension band 10 is inserted into one of the fitting parts 22 of the block 20 so that the lower fitting convex parts 22 a and 22 b are fitted, and the block 20 is locked to the tension band 10. This operation is performed for the entire circumference of the tension band 10.
- the other tension band 10 is inserted into the other fitting portion 22 of the block 20, thereby obtaining the high load transmission V-belt B.
- V-belt for high load transmission V-belts for high load transmission of Examples 1 to 5 and Comparative Examples 1 to 4 below were produced. Each configuration is also shown in Table 1.
- Example 1 As a resin material for block molding, 72.5 parts by mass of PAN-based carbon short fiber and 17.5 parts of graphite powder with respect to 100 parts by mass of a phenol resin (50% by mass of phenol aralkyl resin and 50% by mass of novolak phenol resin) as a matrix resin. What knead
- the molten resin material for block molding is injected into the cavity to form carbon that forms the reinforcing structural material
- a block having a fiber content of 60% by volume was molded.
- the density of this block was 1.50 g / cm 3 .
- the maximum length of the carbon fiber contained in the block was 1.95 mm.
- Example 1 A high-load transmission V-belt having the same configuration as that of the above embodiment using this block was produced, and this was designated as Example 1.
- the belt length of Example 1 is 612 mm, the belt pitch width is 25 mm, the belt thickness is 12.8 mm, the belt angle is 26 °, the number of blocks is 204, the block pitch is 3 mm, and the spacing between the blocks is It was 0.05 mm. Further, the belt mass of Example 1 was 215.5 g (total tension band mass 78.0 g and block total mass 137.5 g), and therefore the mass per belt unit length was 0.35 kg / m.
- the tension-retaining rubber layer is a hydrogenated acrylonitrile rubber composition reinforced with zinc dimethacrylate, the core is a braid of aramid fibers, and the upper and lower reinforcing fabrics are nylon fiber woven fabrics. Formed.
- Example 2 As a reinforcing structural material, carbon fiber filament yarn (manufactured by Toho Tenax Co., Ltd., trade name: HTS40, 7 ⁇ ⁇ 3000, 200 tex) is added to a polyethylene sheet having a thickness of 200 ⁇ m as a sheet-like base material formed into a block shape. A high-load power transmission V-belt having the same configuration as in Example 1 was used except that an embroidery was used so that the fiber orientation direction corresponded to the belt width direction.
- the belt mass of Example 2 was 215.5 g (total tension band mass 78.0 g and block total mass 137.5 g), and therefore the mass per belt unit length was 0.35 kg / m.
- the density of the reinforcing structural material is 1.51 g / cm 3
- the density of the block is 1.50 g / cm 3
- the maximum length of the carbon fiber included in the block is 1.80 mm
- the reinforcing structural material included in the block is formed.
- the content of carbon fiber to be used was 60% by volume.
- Example 3 As a reinforcing structural material, a filament sheet of carbon fiber and a filament thread of polypropylene fiber are drawn in a ratio of 1: 1 on a polyethylene sheet having a thickness of 200 ⁇ m as a sheet-like base material formed into a block shape, and these are made of polypropylene fiber.
- a high-load power transmission V-belt having the same configuration as that of No. 1 was produced.
- Example 3 The belt mass was 215.5 g (total tension band mass 78.0 g and block total mass 137.5 g), and therefore the mass per belt unit length was 0.35 kg / m.
- the density of the reinforcing structural material is 1.51 g / cm 3
- the density of the block is 1.50 g / cm 3
- the maximum length of the carbon fiber included in the block is 1.90 mm
- the reinforcing structural material included in the block is formed.
- the content of carbon fiber to be used was 60% by volume.
- Example 4 The orientation direction of the carbon fiber by the spun yarn of carbon fiber (the same thickness as the filament yarn of the carbon fiber of Example 2) on a polyethylene sheet having a thickness of 200 ⁇ m as a sheet-like base material formed into a block shape as a reinforcing structural material Except that the embroidery was applied so as to correspond to the belt width direction, the carbon fiber content forming the reinforcing structural material included in the block was 35% by volume, and the belt pitch width was 20 mm. A high-load power transmission V-belt having the same configuration as that of Example 1 was produced.
- the belt mass of Example 4 was 186.1 g (total tension band mass 63.0 g and block total mass 123.1 g), and therefore the mass per belt unit length was 0.30 kg / m.
- the density of the reinforcing structural member was 1.32 g / cm 3
- the density of the block was 1.34 g / cm 3
- the maximum length of carbon fibers contained in the block was 1.90 mm.
- Example 5 The orientation direction of the carbon fiber by the spun yarn of carbon fiber (the same thickness as the filament yarn of the carbon fiber of Example 2) on a polyethylene sheet having a thickness of 200 ⁇ m as a sheet-like base material formed into a block shape as a reinforcing structural material Except that the embroidery was applied so as to correspond to the belt width direction, the carbon fiber content forming the reinforcing structural material included in the block was 95% by volume, and the belt pitch width was 20 mm.
- a V-belt for high load transmission having the same configuration as that of Example 1 was produced and designated as Example 5.
- the belt mass of Example 5 was 219.3 g (tensile band total mass 63.0 g and block total mass 156.3 g), and therefore the mass per belt unit length was 0.36 kg / m.
- the density of the reinforcing structure material 1.76 g / cm 3, the density of the block 1.70 g / cm 3, the maximum length of the carbon fiber contained in the block was 1.90 mm.
- Example 1 A high-load power transmission V-belt having the same configuration as in Example 1 except that a metal reinforcing material formed of duralumin of A2024P T361 in JIS H 4000 was used instead of the reinforcing structural material, and this was compared with the comparative example. It was set to 1.
- the belt mass of Comparative Example 1 was 305.3 g (total tension band mass 78.0 g and block gross mass 227.3 g), and thus the mass per belt unit length was 0.50 kg / m.
- the density of the metal reinforcing member is 2.70 g / cm 3
- the density of the block is 2.48 g / cm 3
- the maximum length of the carbon fiber contained in the block was 0.1 mm.
- ⁇ Comparative example 2> As a block molding resin material, 100 mass parts of 4,6 nylon resin, which is a matrix resin, is used by blending 30 parts by mass of PAN-based carbon short fibers and without embedding a reinforcing structural material. A high-load transmission V-belt having the same configuration as that of Example 1 except that the manufactured block was used was prepared, and this was designated as Comparative Example 2.
- the belt mass of Comparative Example 2 was 210.2 g (total tension band mass 78.0 g and block gross mass 210.2 g), and thus the mass per belt unit length was 0.34 kg / m.
- the density of the block was 1.44 g / cm 3 and the maximum length of the carbon fiber contained in the block was 0.1 mm.
- the belt mass of Comparative Example 3 was 216.5 g (total tension band mass 63.0 g and block gross mass 153.5 g), and therefore the mass per belt unit length was 0.35 kg / m.
- the density of the block was 2.28 g / cm 3
- the maximum length of the carbon fiber contained in the block was 0.1 mm.
- the belt mass of Comparative Example 4 was 159.9 g (total tension band mass 63.0 g and block total mass 96.9 g), and thus the mass per belt unit length was 0.26 kg / m.
- the density of the block was 1.44 g / cm 3 and the maximum length of the carbon fiber contained in the block was 0.1 mm.
- Test evaluation method Using a belt running test machine in which a driving pulley and a driven pulley were provided in the chamber, a belt running test was conducted to test and evaluate the following items.
- the pulley pitch diameter (the core when the high load transmission V-belt B is wound) It is wound around a drive pulley 91 having a diameter of 65.0 mm and a driven pulley 92 having a pulley pitch diameter of 130 mm.
- the driven pulley 92 is loaded with a dead weight (DW) of 4000 N, and air at 90 ° C. is placed in the chamber 93.
- the drive pulley 91 was rotated at a rotational speed of 2600 ⁇ 60 rpm with a drive shaft torque of 80.0 N ⁇ m.
- N 1 input rotation speed
- N 2 output rotation speed
- Tr 1 input torque
- Tr 2 output torque
- a pulley 91 having a pulley pitch diameter of 130 mm and a driven pulley having a pulley pitch diameter of 60.0 mm are used.
- the pulley 92 is wound, and the driven pulley 92 is loaded with a dead weight (DW) of 4000 N, and air is blown into the chamber 93 at 23 ⁇ 4 ° C., while the drive shaft is unloaded and the drive pulley 91 is set at 0 to 3000 rpm. It was rotated while changing the rotation speed range.
- the maximum value of noise measured with a noise measuring device at a position 10 mm from the belt side surface in the center between the belt spans was defined as belt noise.
- Table 2 shows the test results.
- the belt transmission efficiency was 98% in Example 1, 97% in Example 2, 98% in Example 3, 98% in Example 4, 98% in Example 5, and 95% in Comparative Example 1, compared with 95%.
- Example 2 was 97%
- Comparative Example 3 was 95%
- Comparative Example 4 was 97%.
- the high-speed and high-load heat-resistant durability life is 500 hours or more for Examples 1 to 5, 500 hours or more for Comparative Example 1, 24 hours (block breakage) for Comparative Example 2, 500 hours or more for Comparative Example 3, and Comparative Example 4 was 20 hours (block breakage).
- the belt noise was 74 dB in Example 1, 75 dB in Example 2, 75 dB in Example 3, 76 dB in Example 4, 76 dB in Example 5, and 90 dB in Comparative Example 1, and 75 dB in Comparative Example 2. 3 was 85 dB, and Comparative Example 4 was 75 dB.
- the present invention is useful for a V-belt for high load transmission and a manufacturing method thereof.
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Abstract
Description
図1及び2は本実施形態に係る高負荷伝動用VベルトBを示す。この本実施形態に係る高負荷伝動用VベルトBは、例えば自動車等におけるベルト式無段変速装置に用いられるものである。
次に、高負荷伝動用VベルトBの製造方法について説明する。
-未架橋ゴム組成物準備-
バンバリーミキサー等のゴム練り加工機にゴム成分を投入して素練りした後、これにゴム配合剤を投入して混練りする。そして、練り上がった未架橋ゴム組成物をカレンダロールによりシート状に加工してシート状の未架橋ゴム組成物を得る。
撚り糸又は組紐に、RFL水溶液に浸漬した後に加熱する処理及び/又はゴム糊に浸漬した後に乾燥させる処理を施して心線13と得る。なお、これらの処理の前に撚り糸等にエポキシ溶液やイソシアネート溶液に浸漬した後に乾燥させる処理を施してもよい。
織布、編物、或いは不織布に、RFL水溶液に浸漬した後に加熱する処理及び/又はゴム糊に浸漬或いはゴム糊をコートした後に乾燥させる処理を施して上側及び下側補強布14,15を得る。なお、これらの処理の前に織布等に、エポキシ溶液やイソシアネート溶液に浸漬した後に乾燥させる処理を施してもよい。
張力帯10の下側嵌合凹部形状の金型軸方向に延びる突条が外周面に周方向に等ピッチで設けられた円筒金型を筒状に形成した下側補強布15で被覆し、その上にシート状の未架橋ゴム組成物を所定層積層して設ける。
-ブロック成型用樹脂材料準備-
二軸混練機等の樹脂混練機にマトリクス樹脂及び樹脂配合剤を投入して混練し、回収した混練物を粉砕して粉状化乃至粒状化してブロック成型用樹脂材料を得る。
図8に示すようにブロック成型機の金型80のキャビティC内に補強構造材23を配置して型締めした後、キャビティC内に樹脂被覆層24を形成する未固化のブロック成型用樹脂材料Mを供給することによりブロック20を成型する。
一方の張力帯10の上側及び下側嵌合凹部11a,11bにそれぞれブロック20の上側及び下側嵌合凸部22a,22bを対応させ、上側及び下側嵌合凹部11a,11bにそれぞれ上側及び下側嵌合凸部22a,22bが嵌め入れられるように、ブロック20の一方の嵌合部22に張力帯10を挿入し、ブロック20を張力帯10に係止させる。この操作を張力帯10の全周について行う。同様に、他方の張力帯10をブロック20の他方の嵌合部22に挿入し、それによって高負荷伝動用VベルトBを得る。
以下の実施例1~5及び比較例1~4の高負荷伝動用Vベルトを作製した。それぞれの構成は表1にも示す。
ブロック成型用樹脂材料として、マトリックス樹脂であるフェノール樹脂(フェノールアラルキル樹脂50質量%及びノボラックフェノール樹脂50質量%)100質量部に対し、PAN系炭素短繊維72.5質量部、グラファイト粉末17.5質量部、パラアラミド短繊維2.8質量部、及び硬化剤のヘキサミン15質量部を配合して混練したものを調製した。このブロック成型用樹脂材料の密度は1.44g/cm3であった。
補強構造材として、ブロック形状に形成したシート状基材としての厚さ200μmのポリエチレンシートに、炭素繊維のフィラメント糸(東邦テナックス社製、商品名:HTS40、7μ×3000本、200tex)により、炭素繊維の配向方向がベルト幅方向に対応するように刺繍を施したものを用いたことを除いて実施例1と同一構成の高負荷伝動用Vベルトを作製し、それを実施例2とした。
補強構造材として、ブロック形状に形成したシート状基材としての厚さ200μmのポリエチレンシートに炭素繊維のフィラメント糸とポリプロピレン繊維のフィラメント糸とを1:1の割合で引き揃え、それらをポリプロピレン繊維により巻き縫いした複合糸(実施例2の炭素繊維のフィラメント糸と同一太さ)により、炭素繊維の配向方向がベルト幅方向に対応するように刺繍を施したものを用いたことを除いて実施例1と同一構成の高負荷伝動用Vベルトを作製し、それを実施例3とした。
補強構造材として、ブロック形状に形成したシート状基材としての厚さ200μmのポリエチレンシートに炭素繊維の紡績糸(実施例2の炭素繊維のフィラメント糸と同一太さ)により、炭素繊維の配向方向がベルト幅方向に対応するように刺繍を施したものを用い、ブロックに含まれる補強構造材を形成する炭素繊維の含有量を35体積%とし、ベルトピッチ幅を20mmに形成したことを除いて実施例1と同一構成の高負荷伝動用Vベルトを作製し、それを実施例4とした。
補強構造材として、ブロック形状に形成したシート状基材としての厚さ200μmのポリエチレンシートに炭素繊維の紡績糸(実施例2の炭素繊維のフィラメント糸と同一太さ)により、炭素繊維の配向方向がベルト幅方向に対応するように刺繍を施したものを用い、ブロックに含まれる補強構造材を形成する炭素繊維の含有量を95体積%とし、ベルトピッチ幅を20mmに形成したことを除いて実施例1と同一構成の高負荷伝動用Vベルトを作製し、それを実施例5とした。
補強構造材の代わりに、JIS H 4000におけるA2024P T361のジュラルミンで形成された金属補強材を用いたことを除いて実施例1と同一構成の高負荷伝動用Vベルトを作製し、それを比較例1とした。
ブロック成型用樹脂材料として、マトリックス樹脂である4,6ナイロン樹脂100質量部に対し、PAN系炭素短繊維30質量部を配合して混練したものを用い、また、補強構造材を埋設せずに作製したブロックを用いたことを除いて実施例1と同一構成の高負荷伝動用Vベルトを作製し、それを比較例2とした。
ベルトピッチ幅を20mmに形成したことを除いて比較例1と同一構成の高負荷伝動用Vベルトを作製し、それを比較例3とした。
ベルトピッチ幅を20mmに形成したことを除いて比較例2と同一構成の高負荷伝動用Vベルトを作製し、それを比較例4とした。
駆動プーリ及び従動プーリがチャンバー内に設けられたベルト走行試験機を用い、以下の各項目を試験評価するためのベルト走行試験を行った。
実施例1~5及び比較例1~4のそれぞれの高負荷伝動用VベルトBについて、図9(a)に示すように、プーリピッチ径(高負荷伝動用VベルトBを巻き掛けたときの心線位置の径)が65.0mmの駆動プーリ91及びプーリピッチ径が130mmの従動プーリ92に巻き掛けると共に、従動プーリ92に4000Nのデッドウエイト(DW)を負荷し、チャンバー93内に90℃の空気を吹き込みながら、駆動軸トルク80.0N・mで駆動プーリ91を2600±60rpmの回転数で回転させた。そして、このときのN1:入力回転数、N2:出力回転数、Tr1:入力トルク、及びTr2:出力トルクを求め、(N2×Tr2)/(N1×Tr1))×100をベルト伝動効率として算出した。
実施例1~5及び比較例1~4のそれぞれの高負荷伝動用VベルトBについて、図9(b)に示すように、プーリピッチ径が130mmの駆動プーリ91及びプーリピッチ径が60.0mmの従動プーリ92に巻き掛けると共に、従動プーリ92に2300Nのデッドウエイト(DW)を負荷し、チャンバー93内に120℃の空気を吹き込みながら、駆動軸トルク65.0N・mで駆動プーリ91を5800±60rpmの回転数で回転させ、最長走行時間500時間としてベルトが破壊するまで走行させた。そして、ベルトが破壊するまでの走行時間を高速高負荷耐熱耐久寿命とした。
実施例1~5及び比較例1~4のそれぞれの高負荷伝動用VベルトBについて、図9(c)に示すように、プーリピッチ径が130mmの駆動プーリ91及びプーリピッチ径が60.0mmの従動プーリ92に巻き掛けると共に、従動プーリ92に4000Nのデッドウエイト(DW)を負荷し、チャンバー93内に23±4℃の空気を吹き込みながら、駆動軸を無負荷として駆動プーリ91を0~3000rpmの回転数の範囲で変動させながら回転させた。そして、このときベルトスパン間中央でベルト側面から10mmの位置で騒音測定器を用いて計測した騒音の最大値をベルト騒音とした。
表2は試験結果を示す。
C キャビティ
T 炭素繊維糸
10 張力帯
11a 上側嵌合凹部
11b 下側嵌合凹部
12 保形ゴム層
13 心線
14 上側補強布
15 下側補強布
20 ブロック
21 側面部
22 嵌合部
22a 上側嵌合凸部
22b 下側嵌合凸部
23 補強構造材
23a 上側ビーム
23b 下側ビーム
23c センターピラー
24 樹脂被覆層
25 シート状基材
26 縫付糸
70 ベルト式無段変速装置
71 駆動軸
72 駆動プーリ
73 従動軸
74 従動プーリ
80 金型
91 駆動プーリ
92 従動プーリ
93 チャンバー
Claims (15)
- エンドレスの張力帯と、
上記張力帯の長さ方向に並ぶように配設され、各々、該張力帯に係止された複数のブロックと、
を備えた高負荷伝動用Vベルトであって、
上記複数のブロックのそれぞれは、炭素繊維で形成された補強構造材と、該補強構造材を被覆するように設けられた樹脂被覆層と、を有する高負荷伝動用Vベルト。 - 請求項1に記載された高負荷伝動用Vベルトにおいて、
上記補強構造材は、炭素繊維がシート状基材に固定されて構成されている高負荷伝動用Vベルト。 - 請求項2に記載された高負荷伝動用Vベルトにおいて、
上記補強構造材は、炭素繊維によりシート状基材に刺繍が施されて構成されている高負荷伝動用Vベルト。 - 請求項1に記載された高負荷伝動用Vベルトにおいて、
上記補強構造材は、炭素繊維が一方向に配向するように配されたプリプレグで構成されている高負荷伝動用Vベルト。 - 請求項4に記載された高負荷伝動用Vベルトにおいて、
上記補強構造材は、炭素繊維がベルト幅方向に配向するように設けられている高負荷伝動用Vベルト。 - 請求項1乃至5のいずれかに記載された高負荷伝動用Vベルトにおいて、
上記補強構造材が炭素繊維のフィラメント糸又は紡績糸で形成されている高負荷伝動用Vベルト。 - 請求項1乃至6のいずれかに記載された高負荷伝動用Vベルトにおいて、
上記補強構造材が炭素繊維とそれ以外の繊維との複合糸で形成されている高負荷伝動用Vベルト。 - 請求項1乃至7のいずれかに記載された高負荷伝動用Vベルトにおいて、
ベルト単位長さ当たりの質量が0.25~0.46g/mmである高負荷伝動用Vベルト。 - 請求項1乃至8のいずれかに記載された高負荷伝動用Vベルトにおいて、
上記ブロックの密度が1.5~2.2g/cm3である高負荷伝動用Vベルト。 - 請求項1乃至9のいずれかに記載された高負荷伝動用Vベルトにおいて、
上記ブロックに含まれる炭素繊維の最大長さが1mm以上である高負荷伝動用Vベルト。 - 請求項1乃至10のいずれかに記載された高負荷伝動用Vベルトにおいて、
上記ブロックに含まれる上記補強構造材を形成する炭素繊維の含有量が15~95体積%である高負荷伝動用Vベルト。 - 請求項1乃至11のいずれかに記載された高負荷伝動用Vベルトにおいて、
上記樹脂被覆層における少なくともプーリ接触面を構成する部分は炭素短繊維が配合された熱硬化性樹脂で形成されている高負荷伝動用Vベルト。 - エンドレスの張力帯と、
上記張力帯の長さ方向に並ぶように配設され、各々、該張力帯に係止された複数のブロックと、
を備えた高負荷伝動用Vベルトの製造方法であって、
ブロック成形型のキャビティに炭素繊維で形成された補強構造材を配置し、該キャビティ内に未固化樹脂材料を供給するブロック成型工程を含む高負荷伝動用Vベルトの製造方法。 - 請求項13に記載された高負荷伝動用Vベルトの製造方法において、
上記ブロック成型工程をRIM成形、RTM成形、又はVaRTM成形で行う高負荷伝動用Vベルトの製造方法。 - 請求項13に記載された高負荷伝動用Vベルトの製造方法において、
補強構造材が炭素繊維と熱可塑性樹脂繊維との複合糸で形成されており、
上記ブロック成型工程をプレス成形で行う高負荷伝動用Vベルトの製造方法。
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JP2017205943A (ja) * | 2016-05-18 | 2017-11-24 | 新日鐵住金株式会社 | 接合体及びその製造方法 |
US10716912B2 (en) | 2015-03-31 | 2020-07-21 | Fisher & Paykel Healthcare Limited | User interface and system for supplying gases to an airway |
US11324908B2 (en) | 2016-08-11 | 2022-05-10 | Fisher & Paykel Healthcare Limited | Collapsible conduit, patient interface and headgear connector |
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WO2017061100A1 (ja) * | 2015-10-09 | 2017-04-13 | バンドー化学株式会社 | Vリブドベルト及びその製造方法 |
US9601567B1 (en) * | 2015-10-30 | 2017-03-21 | Taiwan Semiconductor Manufacturing Co., Ltd. | Multiple Fin FET structures having an insulating separation plug |
JP7272529B2 (ja) * | 2017-04-27 | 2023-05-12 | ゲイツ コーポレイション | 一方向帆布により強化された同期ベルト |
US10743608B2 (en) | 2017-12-28 | 2020-08-18 | Under Armour, Inc. | Fiber reinforced plate for articles of footwear and methods of making |
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- 2012-10-15 EP EP12843589.8A patent/EP2772662A4/en not_active Withdrawn
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- 2012-10-15 WO PCT/JP2012/006598 patent/WO2013061538A1/ja active Application Filing
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US10716912B2 (en) | 2015-03-31 | 2020-07-21 | Fisher & Paykel Healthcare Limited | User interface and system for supplying gases to an airway |
US11904097B2 (en) | 2015-03-31 | 2024-02-20 | Fisher & Paykel Healthcare Limited | User interface and system for supplying gases to an airway |
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US11324908B2 (en) | 2016-08-11 | 2022-05-10 | Fisher & Paykel Healthcare Limited | Collapsible conduit, patient interface and headgear connector |
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US20140235393A1 (en) | 2014-08-21 |
KR20140082833A (ko) | 2014-07-02 |
EP2772662A4 (en) | 2015-06-17 |
JPWO2013061538A1 (ja) | 2015-04-02 |
EP2772662A1 (en) | 2014-09-03 |
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