WO2002038398A1 - Roue de vehicule - Google Patents
Roue de vehicule Download PDFInfo
- Publication number
- WO2002038398A1 WO2002038398A1 PCT/JP2000/007911 JP0007911W WO0238398A1 WO 2002038398 A1 WO2002038398 A1 WO 2002038398A1 JP 0007911 W JP0007911 W JP 0007911W WO 0238398 A1 WO0238398 A1 WO 0238398A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rubber
- rim
- phr
- base
- rubber layer
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B21/00—Rims
- B60B21/02—Rims characterised by transverse section
- B60B21/023—Rims characterised by transverse section the transverse section being non-symmetrical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B21/00—Rims
- B60B21/10—Rims characterised by the form of tyre-seat or flange, e.g. corrugated
- B60B21/104—Rims characterised by the form of tyre-seat or flange, e.g. corrugated the shape of flanges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C7/00—Non-inflatable or solid tyres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C7/00—Non-inflatable or solid tyres
- B60C7/22—Non-inflatable or solid tyres having inlays other than for increasing resiliency, e.g. for armouring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C7/00—Non-inflatable or solid tyres
- B60C7/24—Non-inflatable or solid tyres characterised by means for securing tyres on rim or wheel body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C7/00—Non-inflatable or solid tyres
- B60C7/24—Non-inflatable or solid tyres characterised by means for securing tyres on rim or wheel body
- B60C7/28—Non-inflatable or solid tyres characterised by means for securing tyres on rim or wheel body using straps or the like, e.g. vulcanised into the tyre
Definitions
- the present invention relates to left-right asymmetric vehicle wheels used for industrial vehicles such as forklifts and construction vehicles. Background art
- An object of the present invention is to provide a vehicle wheel that prevents the occurrence of poor assembly, slippage, rim deviation, and damage resulting therefrom.
- the present invention has taken the following measures to solve the problems. That is,
- a vehicle wheel provided with a projection on the base for engaging with the depression
- the base rubber layer is formed to have a height of 20 to 70% with respect to the tire height, and the base rubber layer has a height of IS-K6251: a dumbbell-shaped tensile test method for vulcanized rubber.
- the tensile stress at 10% elongation in the shape is 1.5 to 5 MPa, and the hardness is A70 to 100 degrees in JIS-K6253: Type A durometer hardness test. This is a vehicle wheel characterized by the following.
- the radial interference when mounting the rim may be 1 to 4%, and the axial interference may be 1 to 5%.
- the inner peripheral length of the bead core is 1.01 to 1.04 times the outer peripheral length of the rim, and the total width of the bead core is 15 to 35% with respect to the rim width. May be mounted at a position 30 to 90% of the tire width.
- the width of the depression is 5 to 30% of the rim width, the depth of the depression is 2 to 8% of the rim diameter, the angle of the depression is 15 to 90 degrees, It is preferable that the height of the axially outer end of the depression is not less than the height of the bottom of the depression.
- the base rubber layer is composed of 20 to 80 PHR of bushing jengom containing at least 5% by weight of syringe tactic 1,2-polyptadiene, and 100 gm of gen-based rubber.
- the rubbery material used as PHR may be used.
- the base rubber layer may be composed of a gen-based rubber, and may contain 1 to 30 PHR of polyamide-based short fibers, and the polyamide-based short fibers may be chemically bonded to the gen-based rubber.
- the base rubber layer has a syndiotactic Tic-one A butadiene rubber containing at least 5% by weight of 1,2-polybutadiene is used at a rate of 20 to 60 PHR, and a rubber material having a PHR of 100 using a gen-based rubber is used.
- the polyamide short fiber may be chemically bonded to the gen-based rubber by using a polyamide short fiber of ⁇ 100 PHR for the rubber content of 100 PHR.
- the composition of the base rubber forming the base rubber layer is a compound containing a phenolic resin
- the base rubber is made of a gen-based rubber, and the amount of bound styrene in the gen-based rubber is 40 to 50% by weight.
- FIG. 1 is a sectional view of a vehicle wheel as one embodiment of the present invention.
- FIG. 2 is an enlarged sectional view of the rim of the present embodiment.
- reference numeral 1 denotes a tire base
- the tire base 1 includes a base rubber layer 2 on the rim side and a tread rubber layer 4 on the road surface side.
- a bead core 6 is disposed on the base rubber layer 2.
- the tire base 1 is mounted on a rim 8, and the rim 8 is provided with a rim flange 10 on one side.
- the rim 8 has a tapered portion ⁇ 2 connected to the rim flange 10, a flat portion 13 connected to the tapered portion 12, and a flat portion 14 connected to the flat portion 13. . Further, a recess 16 is formed on the other side of the rim 8 so as to be connected to the flat portion 14. The depression 16 is formed continuously in the circumferential direction.
- the base rubber layer 2 is formed such that the height D of the base rubber layer 2 in the meridional section including the tire axis is 20 to 70% of the tire height H. If the height D of the base rubber layer 2 is less than 20%, the rigidity is reduced, the distortion becomes too large, the lateral rigidity becomes too small, and the rim shift is apt to occur, which is not preferable. Also, since the base rubber layer 2 for preventing rim slip is too small, there is a possibility that the rubber may run idle when the rubber is deteriorated due to long-term use, which is not preferable.
- the lateral rigidity of the protrusion 20 side against lateral displacement is reduced by the absence of the side flange, and the relative rigidity of the other side with the rib flange ⁇ 0 is relatively small.
- the distortion of the protrusion 20 becomes larger, and the protrusion 2 0 is damaged and the tire base 1 is detached from the rim 8 as it is, or the damage of the projections 20 spreads to the base rubber layer 2 and there is a possibility of destruction of the base.
- the content By setting the content to at least 20%, such a trouble can be avoided and the projection 20 can be protected.
- the relatively elastic tread rubber layer 4 is too thin, and the ability to absorb and absorb various impacts during traveling is reduced.
- the heat generation of the red rubber layer 4 also tends to increase, and at the same time, the ride quality is also unfavorable.
- the tensile stress at the time of 10% elongation in the dumbbell-shaped No. 1 type of the vulcanized rubber tensile test method in JIS-K6251: 1.5 to 5 MPa. Is formed. If the protrusion 20 of the base rubber layer 2 has a tensile stress at 10% elongation of less than 1.5 MPa as a physical property of the base rubber layer 2, the protrusion 20 of the base rubber layer 2 becomes a recess 16 of the room 8 at the time of assembly. However, when the projections 20 of the base rubber layer 2 have passed over the tip of the rim 8, they do not fit neatly at once and do not fit. It is necessary to push in only this part again. Not good.
- the compression set is preferably 50% or less (JIS-K 6262: 70 ° C ⁇ 24 hours test condition). If it exceeds 50%, the settability of the rubber becomes too large, and the protrusions 20 of the base rubber layer 2 are not able to fit in the radial direction at the stage when they have passed over the tip of the rim 8 when the rim is assembled. It is not preferable because it tends to be in a state easily.
- the tensile stress at the time of the 10% elongation is less than 1.5 MPa, it is not preferable because slippage easily occurs between the tire base 1 and the rim 8 when the load is large. Since there is no side flange on the protruding portion 20 side, a sufficient tightening margin in the width direction cannot be obtained, and it is considered that the spinning easily occurs.
- the thickness of the rubber under the bead core 6 may be adjusted by changing the diameter of the bead core 6 and changing the position in the radial direction. By setting the tensile stress at the time of at least 10% extension to 1.5 MPa, it has the effect of significantly improving the fit of the protrusion 20 into the recess 16 when assembling the rim. The idling of the structural tire can be effectively prevented.
- the tensile stress at the time of the 10% elongation exceeds 5 MPa, it is not preferable because it is too hard and the rim assembly is deteriorated. If the physical properties exceed 5 MPa, the rubber may not be easily stretched, and the projections 20 may not be able to withstand the deformation at the time of assembling, and cracks may occur, and may be torn. By setting the tensile stress at the time of 10% elongation to 5 MPa or less, damage to the projection 20 can be prevented.
- the base rubber layer 2 is “IS-K6253: Type A durometer hardness test, the hardness shall be A700 to 100 degrees. If the hardness of the base rubber layer 2 is lower than 70 degrees, the tire rigidity becomes small, the vertical vibration of the base rubber layer 2, the bending in the axial and circumferential directions, the swing and the rim displacement become large, and this is not preferable. I also don't want to be able to spin easily.
- the lateral stiffness of the projection 20 against lateral displacement tends to be relatively smaller than that of the other side due to the absence of the side flange, and the rubber deteriorates over a long period of use. Or an irregular overload (strong impact, etc.)
- the distortion of the raised portion 20 becomes larger, the protrusion 20 is damaged and the tire base 1 is detached from the rim 8 as it is, or the damage of the protrusion 20 spreads to the base rubber layer 2 and the base rubber layer 2 is broken. This is not preferable in terms of tire performance.
- By setting the angle to at least 70 degrees such a trouble can be avoided and the projection 20 can be protected.
- the temperature is more than 100 degrees, the amount of the resin to be compounded to increase the hardness of the base rubber layer 2 usually increases, the flex cracking resistance as a physical property of the rubber decreases, and various kinds of materials such as plastics are used. It is not preferable because cracks and the like easily enter and progress when subjected to an impact or a scratch.
- the protrusion 20 has no protection by the side flange, it is not preferable to make the rubber have high hardness, which has plasticity that is weak against cracks or the like. By setting the hardness to 100 degrees or less, such a trouble can be avoided and the protrusion 20 can be protected.
- the tread rubber layer 4 has a tire height H of 30 to 80% and a hardness of 50 to 75 degrees. If the height is less than 30%, the ability to absorb and absorb various impacts during traveling decreases, and the heat generation of the tread rubber layer 4 tends to increase. Exceeding this is not preferable because the rigidity of the tire becomes small and wear on one side easily occurs. If the hardness is lower than 50 degrees, the rigidity of the tire tends to decrease, and the wear tends to increase. If it exceeds 75 degrees, it is not preferable because it tends to be too hard and the ride comfort is poor.
- an intermediate rubber layer may be provided between the tray rubber layer 4 and the base rubber layer 2.
- the intermediate rubber layer preferably has a hardness of 10 to 45% with respect to the tire height H and a hardness of 45 to 65 degrees, and has a lower rubber hardness than the tread rubber layer 4. If the height is less than 20%, the effect of improving cushioning and heat generation tends to decrease, and if it exceeds 45%, the tire rigidity tends to decrease, which is not preferable. Hardness If it is less than 45 degrees, the tire stiffness tends to decrease, so that it is not preferable. If it exceeds 65 degrees, the effect of improving the cushioning properties and the like tends to decrease, which is not preferable.
- the interference when the rim 8 is assembled to the rim is 1 to 4% in the radial interference, and 12 to 5% in the axial interference.
- the interference between the tire base 1 and the rim 8 on the radial meridional section passing through the shaft is in the range of 1 to 4%, preferably in the constant range of 1 to 4% everywhere. If the radial interference is less than 1%, the slip tends to be less likely to occur, and if the interference is too small, a large load such as an axial hay regular on the protrusion 20 side of the base rubber layer 2 will occur.
- the projections 20 are easily detached when the projection is applied. If it exceeds 4%, the base rubber layer 2 having the projections 20 tends to be difficult to assemble, which is not preferable. In this case, if the assembly is forcibly repeated, the projections 20 of the base rubber layer 2 may be damaged, which is not preferable. By setting the interference in the radial direction to 1 to 4%, such troubles can be avoided and the projection 20 can be protected and assembled.
- the axial interference is 12-5%. If the axial interference is smaller than -2%, the axially outer clearance of the projection 20 in the depression 16 is too large, and it is liable to be rubbed and worn during running. Conversely, if it exceeds 5%, the projections 20 are difficult to fit in the depressions 16 and are difficult to assemble, which is not preferable. In this case, if the assembly is forcibly repeated repeatedly, the protrusion 20 may be damaged, which is not preferable. Also, during running, there is a concern that cracks may occur due to the large interference allowance, and the side portions of the projections 20 protruding outward from the recess 16 in the axial direction may rub against the edges of the recess 16. Not preferred.
- the inner peripheral length of the bead core 6 arranged in the base rubber layer 2 is 1.01 to 1.04 times the outer peripheral length of the rim 8 (rim diameter R DX TC), and the tire axis of the bead core 6 is The total width in the direction is 15 to 35% with respect to the width RW of the rim 8.
- the operation of the bead core 6 is a so-called tag effect, and has a function of fixing the tire base 1 to the rim 8.
- the inner circumference of the bead core 6 is less than 1.0 times the outer circumference of the rim, the inner circumference of the bead core 6 is too small to be easily assembled into the rim, and the rubber under the bead core 6 is too thin to be used during assembly. Also easily breaks during running (reduced durability). By making it at least 0.10 times, it can be assembled smoothly. If it exceeds 1.04 times, the assemblability will be improved, but there is a tendency that the slipping effect is likely to be small due to a small evening glow effect, which is not preferable.
- the total width of the bead core 6 in the tire axial direction (the number of the bead cores 6 x the width A of one bead) is set to 15 to 35% with respect to the rim width RW.
- the function of the bead core 6 is a so-called evening gas effect, and has a function of fixing the tire base 1 to the rim 8. Since there is no side flange on the protruding portion 20 side, sufficient tightening margin in the width direction cannot be obtained. Therefore, it is necessary to set it to 15 to 35% which is larger than usual. Incidentally, as shown in Japanese Patent Application Laid-Open No. 10-193913, it is suitably about 10 to 21%. If the total width of the bead core 6 in the tire axial direction is less than 15% with respect to the rim width RW, the tires are liable to run idle. If it exceeds 35%, it is difficult to assemble the rim, which is not preferable.
- the position B of the outer bead core 6 is 30 to 90% of the tire bead width RW.
- the outer bead core 6 is less than 30% of the tire bead width RW in the tire axial direction, the tightening pressure due to the evening glow effect on the outer side of the tire is reduced, and it is not preferable because it is easy to slip.
- the bead core 6 is too far outside during assembling, the rubber around the tire opening when the rim 8 is inserted has a small margin for deformation, especially in the radial direction.
- the margin of deformation of the rubber is similarly reduced when riding over the axially outermost end (garter portion) of the recess 16 of the rim 8. It is not preferable because excessive load and deformation are likely to cause damage. Further, if it is too far outside, the bead core 6 is likely to be exposed when a rim shift occurs, which is not preferable. As described above, by setting the content to 90%, the deformation of the rubber on the projection 20 is imparted, and the projection 20 is hardly damaged. On the other hand, if the inner bead core 6 exceeds 50%, the fastening pressure at the center of the tire is reduced due to the hoop effect, which is not preferable because the tire is liable to idle. In addition, it is preferable that the bead cores 6 are arranged at equal intervals in the axial direction as much as possible.
- the width Wa of the depression 16 is preferably 5 to 30% with respect to the rim width RW. Particularly preferred is 7 to 20%. If it is less than 5%, the width Wa of the depression 16 becomes too small, and the resistance to the lateral load received by the projection 20 becomes small, and the long-term use If the rubber is degraded due to the tire, or if an irregular overload (strong impact, etc.) is applied, the protrusion 20 may be damaged or come off the dent 16, resulting in poor tire performance. Not preferred. If it exceeds 30%, the assembling low pile will increase due to the increased resistance when the protrusion 20 crosses the axially outer end (garter part) of the recess 16 during assembly. It is not preferable because it tends to be difficult to assemble.
- the depression depth Da is 2 to 8% of the rim diameter R D. Particularly preferably, it is 3 to 5%.
- the depth of the depression 16 is too shallow, and the resistance to the lateral load received by the projection 20 is small for the lateral load of the tire. It is not preferable because the protrusions 20 may be damaged or come off from the recess 16 when irregular overload (strong impact, etc.) is applied. Also, if it exceeds 8%, the assembling resistance tends to increase due to the increase in the resistance when the protrusion 20 crosses the axially outer end of the dent 16 (part of the girder) during assembly. It is not preferable because it makes assembly difficult.
- the angle 0 of the depression 16 is 15 to 90 degrees. Particularly preferably, it is 22 to 60 degrees.
- the angle of the protrusion 20 is preferable for ease of assembly and durability. Can be 0. If the angle exceeds 90 degrees, the resistance at the time of assembling, when the protrusion 20 contacts the axial end sound B (garter portion) of the recess 16 becomes too large, making it difficult to assemble. In addition, the projections 20 themselves cannot withstand deformation during assembly, and may be cracked or eventually torn, which is not preferable. In addition, if the temperature is 90 degrees or more, the rubber may deteriorate over a long period of time, or the protrusion 20 may be easily damaged in the event of irregular overload (strong impact, etc.). It is not preferable in terms of tire performance.
- the height Ha of the axially outer end (garter portion) of the depression 16 is equal to or greater than the height of the bottom of the depression 16, thereby preventing the projection 20 from falling off in the lateral load of the tire. .
- the edge height Ha is preferably 50% to 200% of the depth of the depression 16 (the depth from the flat surface 14 or the flat surface 13 to the bottom of the depression 16). % Height is preferred. Preferably, it is 70 to 150%, particularly preferably 80 to 120%. If it is less than 50%, the end height H a becomes too small, and the resistance to the lateral load applied to the tire 20 against the lateral load applied to the tire also decreases. It is not preferable because the protrusions 20 are liable to be damaged or detached from the dents 16 when irregularities are deteriorated or when an irregular overload (strong impact, etc.) is applied.
- the end height Ha is too large, and when assembling, the resistance when the protrusion 20 gets over the end (garter part) becomes large. It is not preferable because it tends to be difficult to assemble. Further, if it is more than 200%, the projections 20 cannot withstand the deformation at the time of contact with the ends, and there is a possibility that the projections 20 may be cracked and eventually torn as they are. By setting as described above, it is possible to avoid the above-described trapping and to protect the protrusion 20 and prevent the protrusion 20 from falling off.
- the composition of the base rubber forming the base rubber layer 2 is as follows: Synditactic Tactic—Uses 20 to 80 PHR of butadiene rubber containing at least 5% by weight of 1,2 polybutadiene, and natural rubber, SBR, BR 1 0 0 using gen-based rubber A rubber composition was prepared by using a rubber substance as PHR and adding a general rubber chemical such as a filler such as carbon black and a vulcanizing agent.
- Base rubber has the following physical properties: JIS-K6251: Dumbbell-shaped vulcanized rubber tensile test method Tensile stress at 10% elongation of No. ⁇ is 1.5 to 5 MPa, and JIS-K6253: Type ⁇ A hardness of 70 to 100 degrees is required for durometer hardness test.
- the following properties can be obtained by assembling a butadiene rubber containing at least 5% by weight of syndiotactic 1,2-polybutadiene with a gen-based rubber occupying 20 to 80 PHR as a main component of the compounding. Table 1 Formulation and physical property data
- Examples 1 to 4 show that butadiene rubber containing at least 5% by weight of highly crystalline and high melting point syndiotactic 1,2-polybutadiene occupies 20 to 8% PHR, and other gen-based rubbers.
- 100 PHR to add resin such as carbon black and cash-modified phenolic resin to increase hardness, and Zinc Hua No. 3, stearic acid, wax, antioxidant, aromatics
- a rubber composition that combines commonly used rubber chemicals such as oil, sulfur, and vulcanization accelerator (BBS) with hexamethylenetetramine, a curing agent for cash-modified phenolic resin It is.
- resins for the purpose of increasing the hardness, such as cash-modified phenol resin may not be used.
- syndiotactic 1,2-polybutadiene is contained in an amount of 5% by weight or more, preferably 7% or more. If it is less than 5%, the tensile stress and hardness at the time of 10% elongation tend to decrease, which is not preferable.
- VCR412 containing 12% of syndiotactic 1,2-polybutadiene was used.
- the amount of butadiene rubber containing syndiotactic 1,2-polybutadiene is 20 to 80 PHR, more preferably 30 to 60 PHR. If it is less than 20 PHR, the tensile stress and hardness at the time of 10% elongation tend to decrease, which is not preferable. When the pH is 80 PHR or more, the kneading becomes difficult, or the bagging in the roll work increases, and the overall workability as a compound tends to decrease, which is not preferable. Further, it is not preferable because it is excessive quality.
- butadiene rubber containing at least 5% by weight of syndiotactic-1,2, -polybutadiene is blended with 20 to 80 PHR. It can efficiently obtain tensile stress and hardness at 10% elongation and is excellent in compression set.
- the hardness is as follows: I SK 6253: Type A Durome % Tensile stress at the time of elongation ”IS-K 625 1: According to the tensile test method of vulcanized rubber (however, the tensile speed was set to 1 O OmmZ to measure the low elongation tensile stress), and the compression permanent strain Ha ”I SK 6262: Compression set test of vulcanized rubber set test was performed at 70 ° C for 24 hours.
- carbon black is preferably HAF grade or more, and the use amount is preferably 50 to 100 PHR.
- Phenol resin is usually used in the range of 3 to 15 PHR. If it is less than 3 PHR, the effect of increasing the hardness is small, and if it is more than 15 PHR, the flex cracking resistance of the rubber is undesirably reduced.
- the wax microcrystalline wax or the like may be appropriately used.
- An anti-aging agent may be used such as 6C, IPPD, AD PAL, TMDQ, PAN, DPPD, MBI and the like.
- sulfenamides such as BBS and CBS may be appropriately used.
- Hexamethylenetetraamine was used as a curing agent for phenolic resin.
- the base rubber that forms the base rubber layer 2 is composed of a gen-based rubber, contains polyamide short fibers in the range of PH to 30 PHR, and polyamide short fibers are chemically bonded to the gen-based rubber.
- a rubber composition may be added by adding a general rubber chemical such as a filler such as a car pump rack or a vulcanizing agent.
- Base rubber has the following physical properties: JIS-K 6251: Tensile stress at 10% elongation at 10% elongation in dumbbell-shaped No. 1 type of vulcanized rubber tensile test method, JIS-K 6253: Type ⁇ A hardness of 70 to 00 degrees is required for durometer hardness test.
- the following physical properties can be obtained by assembling a polyamide-based short fiber containing 1 to 30 PHR, and a polyamide-based short fiber that is chemically bonded to a gen-based rubber. Table 2 Formulation and physical property data
- a gen-based rubber was used, and a polyamide-based short fiber was included in the polyamide-based short fiber by up to 30 PHR.
- the polyamide-based short fiber was chemically bonded to the gen-based rubber.
- a rubber composition is prepared by adding a filler such as black and a general rubber chemical such as a vulcanizing agent ( ⁇ BR (butadiene) in Table 2 may be SBR).
- ⁇ BR butadiene
- the polyamide short fiber used here is UBE POL-HE01100 of FRR-NR under the trade name of Ube Industries.
- the compounding is a master batch of 6-nylon 50 PH R (6-nylon melting point 221 ° C) with 100 rubber natural rubber.
- the master batch FRR-NR (UBE PO It is advisable to prepare a second masterbatch of L-HE010, a part of the polymer and a part of the car pump rack, and then add the remaining materials and knead the mixture. By doing so, the dispersibility of the short fibers can be improved.
- the amount of the polyamide short fiber used is 1 PHR or less
- the tensile stress and hardness at low elongation that is, the tensile stress at 10% elongation decreases, and particularly, the tensile stress at 10% elongation tends to decrease.
- the overall workability as a compound tends to decrease, such as increased bagging in the roll work, which is not preferable.
- the rubber kneading property is poor, and the dispersibility of the nip is also reduced. The tendency is unfavorable, and the quality is excessive, which is not preferable.
- it is in the range of 2 to 20 PHR.
- nylon 6 nylon 12, nylon 61, nylon 61, nylon 61, and the like having a melting point of about 190 to 23 ° C.
- nylon 6 nylon 12, nylon 61, nylon 61, nylon 61, and the like having a melting point of about 190 to 23 ° C.
- These may be used as a master batch with an arbitrary ratio of natural rubber or the like in consideration of dispersibility and the like.
- a master batch of natural rubber and high-density or low-density polyethylene and polyamide short fibers may be used.
- the nylon surface has a chemical bond with the rubber component, the rubber can be reinforced efficiently.
- the polyamide fiber of the present invention may be in any state of bonding with rubber molecules, but for example, a chemical bond such as a primary bond or a dafraft bond by a coupling agent is preferable.
- the polyamide short fibers have an average diameter of 0.05 to 1. ⁇ ., More preferably 0.1 to 0.6 m, particularly preferably 0.2 to 0.4 ⁇ , 90% or more (weight ratio) is preferably 1 cm or less. If the average diameter is less than 0.05) m, cutting tends to occur during kneading, and if it exceeds 1 tm, it becomes a kind of foreign matter and the durability of the rubber tends to decrease, which is not preferable.
- the average fiber length is preferably from 100 to 2000 m, more preferably from 200 to 100 O wm, and still more preferably from 200 to 500 Atm. If it is less than 100 m, the orientation tends to be poor and the reinforcing effect tends to be small.
- the “average fiber length / average diameter” of the short fibers is preferably about 100 to 2,000, more preferably about 100 to 1,000. If it is less than 100, the reinforcing property tends to decrease, and if it is more than 2,000, the dispersibility tends to decrease, which is not preferable.
- the hardness is as follows: I SK 6253: Type A durometer hardness test, tensile stress at 10% elongation ”I SK 625 1: Vulcanized rubber tensile test method (however, The tensile speed was set to 1 O OmmZ for measurement), and the permanent compression set was as follows: I SK 6262: Permanent set test method for vulcanized rubber was performed at 70 ° C for 24 hours under the compression set test method. (Same conditions as in Table 1).
- carbon black is preferably HAF grade or more, and the use amount is preferably 50 to 100 PHR.
- the phenolic resin for increasing the hardness in addition to the cash-modified phenolic resin, other oil-modified products, non-modified products, etc., may be used. .
- the wax microcrystalline wax or the like may be appropriately used.
- Antioxidants such as 6C, IPPD, AD PAL, TMDQ, PAN, DPPD, MBI, etc. may be used.
- sulfenamides such as BBS and CBS may be appropriately used.
- Hexamethylene tetraamine is a curing agent for phenolic resin. (Same as Table 1)
- the composition of the base rubber for forming the base rubber layer 2 was 20 to 60 PHR, and the composition of the base rubber containing at least 5% by weight of syndiotactic mono-, 2-polybutadiene was used.
- a rubber component having a total of 100 PHR using natural rubber, SBR, BR, or other gen-based rubber was used, and a polyamide short fiber of 1 to 20 PH was used for 1 OOPHR of the rubber.
- R is used, and a rubber composition is also obtained by adding a filler such as carbon black and a general rubber chemical such as a vulcanizing agent.
- Base rubber has physical properties of J 1 SK 6251: Tensile stress at 10% elongation at 10% elongation in dumbbell No. 1 type of tensile test method for vulcanized rubber: 1.5 to 5 MPa, JIS-K 6253: Type A A hardness of 70 to 100 degrees is required in the A durometer hardness test.
- Butadiene rubber containing at least 5% by weight of syndiotactic 1,2-polybutadiene uses a gen-based rubber occupying 20 to 60 PHR (in addition to gen-based rubber such as natural rubber, SBR and BR). The total amount is 100 PHR), and polyamide-based short fibers are used in an amount of 1 to 20 PHR per 1 OOPHR of the rubber material.
- the above-mentioned physical properties can be obtained by assembling amide-based short fibers which are chemically bonded to gen-based rubber as a main component of the compounding.
- butadiene rubber containing syndiotactic 1,2-polybutadiene is 20 to 60 PHR.
- the amount of the polyamide short fiber used is 1 to 20 PHR, and the polyamide short fiber is chemically bonded to the gen rubber. By using both, the tensile stress at 10% elongation is improved.
- the abrasion resistance, crack resistance and the like are improved. Therefore, an excessive load is likely to be applied to the protruding portion 20 during an assembling operation or the like, but even in such a case, it is difficult for the protruding portion 20 to be damaged or cracked. Also, of course, the durability against the damage of the projection 20 as described above is improved even during traveling.
- the physical properties of the base rubber of the present invention are as follows: JIS-K6251: Tensile stress at 10% elongation in a dumbbell-shaped No. 1 type vulcanized rubber tensile test method is 1.5 to 5 MPa, JIS-K6253: Type A Durometer hardness test requires hardness of A70-100 degrees.
- JIS-K6251 Tensile stress at 10% elongation in a dumbbell-shaped No. 1 type vulcanized rubber tensile test method is 1.5 to 5 MPa
- JIS-K6253 Type A Durometer hardness test requires hardness of A70-100 degrees.
- a formulation containing a phenolic resin a styrene-butadiene copolymer rubber having an amount of bound styrene of 40 to 50% by weight and produced by solution polymerization is added to a gen-based rubber in an amount of 25 to 50%.
- the following physical properties can be obtained by using it within the range of PHR and assembling it as the main
- Zinc flower No. 3 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 Suaric acid 2 2 2 2 2 Wax 2 2 2 2 2 2 2
- Vulcanization accelerator (BBS) 1 1 1 1 1 1 Hexamethylene perthramine 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
- Compression set ( ⁇ 1 ⁇ 2) 35 33 32 30 29 According to the present invention, as shown in Table 4, in a formulation containing a phenolic resin, the amount of bound styrene was 40 to 50% by weight, and that of a conventional product SBR (2 Styrene-butadiene copolymer rubber (SBR) produced by solution polymerization and containing 25 to 50 PHR, to which another gen-based rubber is added to add 100 PHR.
- SBR Styrene-butadiene copolymer rubber
- Phenolic resins such as cash denaturation, carbon black, and zinc oxide 3, stearic acid, wax, anti-aging agent 6C, aromatic oil, sulfuric acid, vulcanization accelerator
- the rubber composition is a combination of a rubber agent such as (BBS) or the like, and hexamethylenetetraamine, which is a curing agent for cash-modified phenolic resin.
- the bound styrene content is preferably 40 to 50% by weight. If it is less than 40%, the tensile stress and hardness at the time of 10% elongation tend to decrease. The tendency for the flex crack resistance, which is an index of the resistance, to decrease is not preferred. Further, pugging or the like is liable to occur during the roll work, and the overall workability as a compound is undesirably reduced.
- the flex crack resistance which is an indicator of the durability of the beam rubber, tends to decrease, which is not preferable.
- the amount of styrene-butadiene copolymer rubber (SBR) used is 25 to 50 PHR. If it is less than 50 PHR, the tensile stress and hardness at 10% elongation tend to decrease, which is not preferable.If it exceeds 50 PHR, the flex crack resistance, which is also an index of rubber durability, tends to decrease. Is not preferred. Further, pugging and the like are more likely to occur during the drilling work, and the overall workability as a compound is undesirably reduced.
- the carbon black is preferably HAF class or higher, and the use amount thereof is preferably 50 to 1 OOPHR. Further, it is preferable to mix two or more types of car pump racks having H A F class or higher and different structures. For example, those with an oil absorption of about 100 Om I / 100 g (Tokai Carbon: Sheath N) and those with about 75 m I 100 Og (Tokai Carbon: Sheath 300). By doing so, it is possible to further improve the flex crack resistance, which is an index of rubber durability, while maintaining sufficient hardness and the like.
- Phenol resin is usually used in the range of 5 to 15 PHR. If it is less than 5 PHR, the effect of increasing the hardness is small, and if it is more than 15 PHR, the flex cracking resistance of the rubber is undesirably increased. With the above composition, a rubber composition having excellent flex crack resistance can be obtained, so that the protrusion 20 can be effectively prevented from being damaged during running during assembly as described above. can do.
- the used forklift was FG 15 and the load capacity was about 500 kg.
- the running surface was concrete and the running time was about 5 hours and it ran for about 30 days.
- the course is a figure of 8 and the lap is about 5 Om, and the average speed is 10 km / h.
- the tire size is 5.00-8/3. 0 0 D, front wheel: 6.5-10 / 5.0 0 F.
- Each was assembled without using the side flange, lock ring and bead seat band of the TB rim.
- Tread compound is natural rubber, base height 40%, radial direction interference 2%, width direction interference 0%, ratio of inner circumference of bead core 6 to inner circumference of rim (bead core inner circumference)
- the long rim inner circumference is 1.03 times, and the total width of the bead core 6 is 27% for the rear wheel and 23% for the front wheel.
- the present invention is not limited to such an embodiment at all, and can be implemented in various modes without departing from the gist of the present invention.
- the vehicle wheel of the present invention can be used in a manner that, even if the tire base is assembled on the rim without using the bead seat band, the side flange, and the lock ring, the assembly failure, idling, rim misalignment, and projections caused by them are caused. This has the effect of preventing the occurrence of damage to parts and other parts.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Vehicle Body Suspensions (AREA)
- Seal Device For Vehicle (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Centrifugal Separators (AREA)
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00974888A EP1338439B1 (en) | 2000-11-09 | 2000-11-09 | Vehicle wheel |
PCT/JP2000/007911 WO2002038398A1 (fr) | 2000-11-09 | 2000-11-09 | Roue de vehicule |
JP2002540953A JPWO2002038398A1 (ja) | 2000-11-09 | 2000-11-09 | 車両用車輪 |
AU2001213051A AU2001213051A1 (en) | 2000-11-09 | 2000-11-09 | Vehicle wheel |
AT00974888T ATE418462T1 (de) | 2000-11-09 | 2000-11-09 | Fahrzeugrad |
DE60041205T DE60041205D1 (de) | 2000-11-09 | 2000-11-09 | Fahrzeugrad |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2000/007911 WO2002038398A1 (fr) | 2000-11-09 | 2000-11-09 | Roue de vehicule |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002038398A1 true WO2002038398A1 (fr) | 2002-05-16 |
Family
ID=11736673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/007911 WO2002038398A1 (fr) | 2000-11-09 | 2000-11-09 | Roue de vehicule |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1338439B1 (ja) |
JP (1) | JPWO2002038398A1 (ja) |
AT (1) | ATE418462T1 (ja) |
AU (1) | AU2001213051A1 (ja) |
DE (1) | DE60041205D1 (ja) |
WO (1) | WO2002038398A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2844480A1 (fr) * | 2002-09-12 | 2004-03-19 | Jean Gergele | Roue de vehicule |
JP2020011636A (ja) * | 2018-07-19 | 2020-01-23 | 住友ゴム工業株式会社 | ホイール |
JP2021030957A (ja) * | 2019-08-27 | 2021-03-01 | 住友ゴム工業株式会社 | ソリッドタイヤ及び車輪 |
JP7424024B2 (ja) | 2019-12-12 | 2024-01-30 | 住友ゴム工業株式会社 | ソリッドタイヤ及び車輪 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1470937A1 (de) * | 2003-04-24 | 2004-10-27 | Continental Aktiengesellschaft | Kautschukmischung und Fahrzeugluftreifen mit einer solchen Mischung |
WO2008013060A1 (fr) * | 2006-07-26 | 2008-01-31 | Ube Industries, Ltd. | Composition de caoutchouc pour semelle de chaussure et composition de mousse de caoutchouc |
CN102015328A (zh) | 2008-03-11 | 2011-04-13 | 速力达控股股份有限公司 | 车轮、轮辋以及轮胎 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1341700A (en) * | 1970-03-24 | 1973-12-25 | Dunlop Holdings Ltd | Solid tyre keyed to rim |
GB2021493A (en) * | 1978-03-25 | 1979-12-05 | Continental Gummi Werke Ag | A Solid Tyre and Vehicle Wheel Assembly |
US4566515A (en) * | 1984-01-27 | 1986-01-28 | Continental Gummi-Werke Aktiengesellschaft | Wheel and solid tire assembly having locking ring |
JPH05139110A (ja) * | 1991-11-15 | 1993-06-08 | Sumitomo Rubber Ind Ltd | 産業車両用ソリツドタイヤ |
JPH093244A (ja) * | 1995-06-23 | 1997-01-07 | Yokohama Rubber Co Ltd:The | ソリッドタイヤ用ゴム組成物 |
JPH10315706A (ja) * | 1997-05-14 | 1998-12-02 | Bridgestone Corp | 産業用充填タイヤ |
JPH11246708A (ja) * | 1998-02-26 | 1999-09-14 | Aichi Tire Kogyo Kk | ゴム組成物 |
JP2000025410A (ja) * | 1998-07-15 | 2000-01-25 | Aichi Tire Kogyo Kk | ニューマチック形クッションタイヤ |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3405039A1 (de) * | 1984-02-13 | 1985-08-14 | Continental Gummi-Werke Ag, 3000 Hannover | Fahrzeugrad |
DE3406007A1 (de) * | 1984-02-20 | 1985-08-22 | Continental Gummi-Werke Ag, 3000 Hannover | Fahrzeugrad |
EP0524002B1 (en) * | 1991-07-19 | 1995-12-27 | Sumitomo Rubber Industries Limited | Solid tyre |
JPH0524407A (ja) * | 1991-07-19 | 1993-02-02 | Sumitomo Rubber Ind Ltd | ソリツドタイヤ |
-
2000
- 2000-11-09 JP JP2002540953A patent/JPWO2002038398A1/ja active Pending
- 2000-11-09 EP EP00974888A patent/EP1338439B1/en not_active Expired - Lifetime
- 2000-11-09 AT AT00974888T patent/ATE418462T1/de not_active IP Right Cessation
- 2000-11-09 AU AU2001213051A patent/AU2001213051A1/en not_active Abandoned
- 2000-11-09 WO PCT/JP2000/007911 patent/WO2002038398A1/ja active Application Filing
- 2000-11-09 DE DE60041205T patent/DE60041205D1/de not_active Expired - Lifetime
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1341700A (en) * | 1970-03-24 | 1973-12-25 | Dunlop Holdings Ltd | Solid tyre keyed to rim |
GB2021493A (en) * | 1978-03-25 | 1979-12-05 | Continental Gummi Werke Ag | A Solid Tyre and Vehicle Wheel Assembly |
US4566515A (en) * | 1984-01-27 | 1986-01-28 | Continental Gummi-Werke Aktiengesellschaft | Wheel and solid tire assembly having locking ring |
JPH05139110A (ja) * | 1991-11-15 | 1993-06-08 | Sumitomo Rubber Ind Ltd | 産業車両用ソリツドタイヤ |
JPH093244A (ja) * | 1995-06-23 | 1997-01-07 | Yokohama Rubber Co Ltd:The | ソリッドタイヤ用ゴム組成物 |
JPH10315706A (ja) * | 1997-05-14 | 1998-12-02 | Bridgestone Corp | 産業用充填タイヤ |
JPH11246708A (ja) * | 1998-02-26 | 1999-09-14 | Aichi Tire Kogyo Kk | ゴム組成物 |
JP2000025410A (ja) * | 1998-07-15 | 2000-01-25 | Aichi Tire Kogyo Kk | ニューマチック形クッションタイヤ |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2844480A1 (fr) * | 2002-09-12 | 2004-03-19 | Jean Gergele | Roue de vehicule |
JP2020011636A (ja) * | 2018-07-19 | 2020-01-23 | 住友ゴム工業株式会社 | ホイール |
JP7099114B2 (ja) | 2018-07-19 | 2022-07-12 | 住友ゴム工業株式会社 | ホイール |
JP2021030957A (ja) * | 2019-08-27 | 2021-03-01 | 住友ゴム工業株式会社 | ソリッドタイヤ及び車輪 |
JP7287186B2 (ja) | 2019-08-27 | 2023-06-06 | 住友ゴム工業株式会社 | ソリッドタイヤ及び車輪 |
JP7424024B2 (ja) | 2019-12-12 | 2024-01-30 | 住友ゴム工業株式会社 | ソリッドタイヤ及び車輪 |
Also Published As
Publication number | Publication date |
---|---|
EP1338439A4 (en) | 2008-03-05 |
ATE418462T1 (de) | 2009-01-15 |
AU2001213051A1 (en) | 2002-05-21 |
DE60041205D1 (de) | 2009-02-05 |
EP1338439A1 (en) | 2003-08-27 |
JPWO2002038398A1 (ja) | 2004-03-11 |
EP1338439B1 (en) | 2008-12-24 |
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