WO2012108081A1 - Cane and tubular body - Google Patents
Cane and tubular body Download PDFInfo
- Publication number
- WO2012108081A1 WO2012108081A1 PCT/JP2011/074183 JP2011074183W WO2012108081A1 WO 2012108081 A1 WO2012108081 A1 WO 2012108081A1 JP 2011074183 W JP2011074183 W JP 2011074183W WO 2012108081 A1 WO2012108081 A1 WO 2012108081A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reinforced resin
- resin layer
- fiber reinforced
- cane
- shaft portion
- Prior art date
Links
- 229920005989 resin Polymers 0.000 claims abstract description 216
- 239000011347 resin Substances 0.000 claims abstract description 216
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims description 206
- 239000004575 stone Substances 0.000 claims description 58
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 53
- 239000004917 carbon fiber Substances 0.000 claims description 53
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 48
- 239000000463 material Substances 0.000 claims description 44
- 239000003365 glass fiber Substances 0.000 claims description 39
- 230000002093 peripheral effect Effects 0.000 claims description 24
- 229920003002 synthetic resin Polymers 0.000 claims description 20
- 239000000057 synthetic resin Substances 0.000 claims description 20
- 229920003235 aromatic polyamide Polymers 0.000 claims description 17
- 238000005299 abrasion Methods 0.000 claims description 12
- 238000010030 laminating Methods 0.000 claims description 5
- 239000011521 glass Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 125
- -1 polyparaphenylene terephthalamide Polymers 0.000 description 36
- 230000000052 comparative effect Effects 0.000 description 34
- 239000004677 Nylon Substances 0.000 description 19
- 229920001778 nylon Polymers 0.000 description 19
- 230000000694 effects Effects 0.000 description 18
- 238000000034 method Methods 0.000 description 18
- 238000005259 measurement Methods 0.000 description 16
- 229920006122 polyamide resin Polymers 0.000 description 15
- 238000005452 bending Methods 0.000 description 13
- 229920005992 thermoplastic resin Polymers 0.000 description 13
- 239000003822 epoxy resin Substances 0.000 description 10
- 229920000647 polyepoxide Polymers 0.000 description 10
- 229920000728 polyester Polymers 0.000 description 10
- 238000012360 testing method Methods 0.000 description 10
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 10
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 9
- 229920001971 elastomer Polymers 0.000 description 9
- 230000001771 impaired effect Effects 0.000 description 9
- 230000008439 repair process Effects 0.000 description 9
- 239000005060 rubber Substances 0.000 description 9
- 239000004743 Polypropylene Substances 0.000 description 8
- 239000004760 aramid Substances 0.000 description 8
- 125000003118 aryl group Chemical group 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 229920001155 polypropylene Polymers 0.000 description 7
- 229920002292 Nylon 6 Polymers 0.000 description 6
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 6
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 6
- 239000011162 core material Substances 0.000 description 6
- 125000000623 heterocyclic group Chemical group 0.000 description 6
- 229920006253 high performance fiber Polymers 0.000 description 6
- 238000003780 insertion Methods 0.000 description 6
- 230000037431 insertion Effects 0.000 description 6
- 229930182556 Polyacetal Natural products 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000004744 fabric Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 229920006324 polyoxymethylene Polymers 0.000 description 5
- 238000010998 test method Methods 0.000 description 5
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229920001225 polyester resin Polymers 0.000 description 4
- 239000004645 polyester resin Substances 0.000 description 4
- 229920013716 polyethylene resin Polymers 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 229920005672 polyolefin resin Polymers 0.000 description 4
- 229920003051 synthetic elastomer Polymers 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 210000000707 wrist Anatomy 0.000 description 4
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 3
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 229920001707 polybutylene terephthalate Polymers 0.000 description 3
- 239000005061 synthetic rubber Substances 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 229920006337 unsaturated polyester resin Polymers 0.000 description 3
- 229920001567 vinyl ester resin Polymers 0.000 description 3
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical compound C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 2
- 229940090248 4-hydroxybenzoic acid Drugs 0.000 description 2
- 229930185605 Bisphenol Natural products 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 241000253999 Phasmatodea Species 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 206010041662 Splinter Diseases 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 229920006231 aramid fiber Polymers 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical class C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 2
- 150000002170 ethers Chemical class 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 210000004247 hand Anatomy 0.000 description 2
- 239000012784 inorganic fiber Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 229920003986 novolac Polymers 0.000 description 2
- 238000013001 point bending Methods 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 239000004711 α-olefin Substances 0.000 description 2
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 1
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 1
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 1
- KAUQJMHLAFIZDU-UHFFFAOYSA-N 6-Hydroxy-2-naphthoic acid Chemical compound C1=C(O)C=CC2=CC(C(=O)O)=CC=C21 KAUQJMHLAFIZDU-UHFFFAOYSA-N 0.000 description 1
- 235000007756 Akebia quinata Nutrition 0.000 description 1
- 240000008027 Akebia quinata Species 0.000 description 1
- 229920004943 Delrin® Polymers 0.000 description 1
- 241001166076 Diapheromera femorata Species 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 229920003368 Kevlar® 29 Polymers 0.000 description 1
- 229920013692 Kevlar® K-29 Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229920000508 Vectran Polymers 0.000 description 1
- 239000004979 Vectran Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 1
- 239000011304 carbon pitch Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229930003836 cresol Natural products 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- OEBRKCOSUFCWJD-UHFFFAOYSA-N dichlorvos Chemical compound COP(=O)(OC)OC=C(Cl)Cl OEBRKCOSUFCWJD-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- MHSKRLJMQQNJNC-UHFFFAOYSA-N terephthalamide Chemical compound NC(=O)C1=CC=C(C(N)=O)C=C1 MHSKRLJMQQNJNC-UHFFFAOYSA-N 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- 238000007666 vacuum forming Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229940089401 xylon Drugs 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B9/00—Details
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B9/00—Details
- A45B9/02—Handles or heads
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B9/00—Details
- A45B9/04—Ferrules or tips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H3/00—Appliances for aiding patients or disabled persons to walk about
- A61H3/06—Walking aids for blind persons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B9/00—Details
- A45B2009/005—Shafts
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
- A45B9/00—Details
- A45B2009/005—Shafts
- A45B2009/007—Shafts of adjustable length, e.g. telescopic shafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/01—Constructive details
- A61H2201/0161—Size reducing arrangements when not in use, for stowing or transport
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1372—Randomly noninterengaged or randomly contacting fibers, filaments, particles, or flakes
Definitions
- the present invention relates to a cane such as a white cane for a visually impaired person, and more specifically, has sufficient strength excellent in impact resistance against a force from a direction orthogonal to the axis of the shaft portion, and is safe and durable. Further, the present invention relates to a cane that is excellent in repairability, is lightweight, and has high rigidity.
- walking sticks are also called walking sticks and poles, and are used not only for visually handicapped and elderly people, but also for healthy people, such as trekking and light climbing.
- a cane usually includes a rod-shaped shaft portion, a grip portion formed at the upper end of the shaft portion and gripped by the user, and a stone thrust attached to the lower end of the shaft portion.
- these conventional canes have some structural differences, most of them are made of a material such as wood or aluminum alloy.
- a so-called white cane used by a visually impaired person is often used in a state where the tip is slightly lifted from the ground for a long time.
- Conventional wooden canes are heavy and have a heavy burden on the user.
- this wooden cane has a problem in terms of strength and also has a problem that the shaft portion is warped and paint on the surface is peeled off due to repeated swelling and drying due to environmental changes.
- the aluminum alloy cane is lighter than the wooden cane, it is still heavy when used for a long time, and there is a problem in that a dent or bend easily occurs due to impact.
- Patent Document 1 Although the cane described in Patent Document 1 is also lighter than conventional wooden or aluminum alloy canes, it is still light enough to withstand long-term use, particularly for visually impaired people. However, further weight reduction is desired.
- the cane having the above-described shaft portion made of a carbon fiber reinforced resin material has a high bending elastic modulus, for example, as applied to a golf shaft, because the carbon fiber has a high tensile strength and a high elastic modulus. It will be a thing. However, since carbon fiber has a small elongation and is not flexible because it is an inorganic fiber, it has a drawback that it is easily broken by an impact (bending impact) from the lateral direction to the shaft portion. Therefore, it is considered that the mechanical strength as a hit is sufficient as in a golf shaft, but in a cane using this, the work of hitting these frequently enters in order to investigate the situation of a walking road surface and an obstacle.
- a cane in which the shaft portion described above is made of a carbon fiber reinforced resin material is severely damaged in its cross section when it is broken upon impact or the like, and the end of the hard fiber protrudes like a splinter from the broken surface.
- the broken position and the degree of damage must be confirmed by groping. Therefore, there is a possibility that the fiber exposed from the broken surface may be stuck in the user's hand.
- the above wand requires measures such as increasing the thickness so that it does not easily break even when subjected to an impact or the like, but this causes a problem of increasing the weight of the wand.
- the broken part is severely damaged, there is a problem of repairability that it is difficult to perform simple repairs at the site, and the development of a cane that can be easily repaired at the site has been desired.
- the shaft portion using a high-strength organic fiber reinforced resin made of, for example, para-aramid fiber and epoxy resin.
- a high-strength organic fiber reinforced resin made of, for example, para-aramid fiber and epoxy resin.
- the rigidity is reduced as compared with the case where a carbon fiber reinforced resin is used.
- a high strength organic fiber reinforced resin layer is formed thick to increase the rigidity, the shaft portion becomes thick, the amount of resin used increases, and the weight of the cane becomes excessively large.
- the technical problem of the present invention is to solve the above-mentioned problems, and has sufficient strength excellent in impact resistance against the force from the direction orthogonal to the axis of the shaft portion, safety, durability, and repairability. Furthermore, the object is to provide a cane that is lightweight and yet has high rigidity.
- the present invention relates to a cane, which is a cane having a shaft portion (4) and a grip portion (1) at the upper end of the shaft portion (4), wherein the shaft portion (4) is a high-strength organic fiber reinforced resin.
- Layer (31) and a carbon fiber reinforced resin layer (32), and the carbon fiber reinforced resin layer (32) is integrated with the high-strength organic fiber reinforced resin layer (31) at least on the outer peripheral surface thereof. It is characterized by being laminated.
- the present invention 2 is a cylindrical body comprising a cylindrical high-strength organic fiber reinforced resin layer (31) and a carbon fiber reinforced resin layer (32), and the carbon fiber reinforced resin layer (32) is The high-strength organic fiber reinforced resin layer (31) is integrally laminated at least on the outer peripheral surface thereof.
- the organic fibers constituting the high-strength organic fiber reinforced resin layer are light and have high tensile strength, and are more stretchable than inorganic fibers such as carbon fibers. There is no possibility that micro-cracks will be generated in the organic fiber due to the impact. Moreover, even if the shaft or cylinder is subjected to an impact (bending impact) from the direction orthogonal to the axis, the high-strength organic fiber reinforced resin layer is deformed in a buckling shape without breaking, and the impact is buffered.
- the carbon fiber reinforced resin layer provided in the shaft part and the cylinder has high rigidity because the carbon fiber has a higher elastic modulus than the organic fiber, and the high strength organic fiber reinforced resin layer is excessively thick. There is no need to form.
- the carbon fiber reinforced resin layer is integrally laminated with a high-strength organic fiber reinforced resin layer on its outer peripheral surface. Even if the carbon fiber is broken due to an impact from the direction perpendicular to the axis, the carbon fiber reinforced resin layer is protected by the high-strength organic fiber reinforced resin layer, and the shaft and the cylinder are only buckled and severely broken. In addition, the broken carbon fiber is prevented from protruding in a thorn shape.
- the cane with the shaft portion or the like buckled and deformed is easily repaired by using, for example, a commercially available repair kit.
- the carbon fiber reinforced resin layer may be formed by integrally laminating a high-strength organic fiber reinforced resin layer on at least the outer peripheral surface, but the high-strength organic fiber reinforced resin is respectively provided on the outer peripheral surface and the inner peripheral surface.
- the carbon fiber reinforced resin layer is sandwiched between the inner and outer high strength organic fiber reinforced resin layers, and is better protected by these high strength organic fiber reinforced resin layers. Breakage of the shaft portion and the cylinder is prevented, which is preferable.
- the high-strength organic fiber is not limited to a specific material as long as it has high mechanical strength such as tensile strength.
- ultra high molecular weight polyethylene fiber, wholly aromatic polyamide fiber, wholly aromatic polyester fiber, heterocyclic high-performance fiber, polyacetal fiber, etc. are mentioned, and these fibers are used alone or in combination of two or more kinds at an arbitrary ratio.
- a para-aramid fiber is preferably used as the high-strength organic fiber, and a polyparaphenylene terephthalamide fiber is particularly preferable.
- the above-mentioned shaft part and cylinder need only be provided with the carbon fiber reinforced resin layer and the high-strength organic fiber reinforced resin layer one layer at a time, or any one or both, and these layers only. It is also possible to configure. However, if the above-mentioned shaft portion is provided with a cylindrical glass fiber reinforced resin layer further inside the innermost high-strength organic fiber reinforced resin layer, the wear resistance of the inner surface can be improved, and this shaft portion and cylinder body Is cut into a predetermined length or the like, so that the organic fibers can be prevented from being loosened on the inner surface of the cut end, and the shape of the cut end can be improved.
- the outer surface can have good wear resistance, and the shaft portion and When the cylindrical body is cut into a predetermined length or the like, it is possible to prevent the organic fibers from being loosened on the outer surface of the cut end, and it is preferable that the shape of the cut end can be improved.
- the outermost high-strength organic fiber reinforced resin layer is further outside of the outermost high-strength organic fiber reinforced resin layer to clearly indicate the position and function of the cane from the outside or for decoration.
- the display layer is preferably provided.
- the display layer may be a coating film of any color or pattern, but can be easily set to a predetermined color using a reflective tape, a red display tape, etc., and is easy to repair, preferable.
- the display layer may be exposed on the outer surface of the shaft portion. However, if a cylindrical glass fiber reinforced resin layer or an abrasion-resistant transparent resin layer is provided outside the display layer, these glass fibers The display layer is protected by a reinforced resin layer or an abrasion-resistant transparent resin layer, and the abrasion resistance and water resistance are improved, and color change and falling off from the shaft portion can be prevented.
- the above-mentioned shaft portion is not limited to a specific cross-sectional shape, and may have an irregular cross-sectional shape, but is more preferably a perfect circular cross-sectional shape.
- the irregular cross-sectional shape include an oval shape, a hollow shape, an X cross-sectional shape, a Y cross-sectional shape, a T cross-sectional shape, an L cross-sectional shape, a star cross-sectional shape, and a leaf-shaped cross-sectional shape (for example, a three-leaf shape, a four-leaf shape, a five-leaf shape, etc. ), Other polygonal cross-sectional shapes (for example, triangular, quadrangular, pentagonal, hexagonal, etc.).
- the shaft portion may be solid as long as the effect of the present invention is not hindered, but from the viewpoint of weight reduction of the cane, the shaft portion is formed in a hollow shape and includes a hollow portion and a surrounding outer shell portion. Is preferred.
- the cross-sectional area ratio between the hollow portion and the outer shell portion is not limited to a specific value as long as the effect of the present invention is not hindered.
- the cross-sectional area ratio is preferably 85:15 to 56:44 because it has sufficient strength and is light enough to withstand long-term use, and further has excellent safety and repairability. To 80:20 to 60:40, more preferably 75:25 to 62:38.
- the ratio of the cross-sectional area of the hollow portion with respect to the entire shaft portion is less than 56%, the cane cannot be sufficiently reduced in weight, and the shaft portion becomes too hard and is likely to get tired if used for a long time.
- the cross-sectional area ratio of the hollow portion with respect to the entire shaft portion exceeds 85%, the cane becomes too light and the strength against the force from the axis orthogonal direction becomes insufficient, which is not preferable.
- the above cane may be a so-called straight cane that includes a shaft part formed from a single cylinder or the like and cannot be folded. In this case, the connecting part can be omitted, and the shaft part is light. To be preferable.
- the cane of the present invention may be a so-called foldable cane in which the shaft portion is composed of a plurality of shaft portions. In this case, the cane can be folded compactly when not in use and can be easily carried. Therefore, it is preferable.
- the above-mentioned shaft portion is composed of a plurality of shaft portions that can be connected and separated from each other, and the first connecting end portion of one shaft portion of the adjacent shaft portions is connected to the first shaft portion of the other shaft portion facing this.
- the number of shaft portions at this time that is, the number of folding steps, is not limited to a specific value, and is appropriately set to an arbitrary number of steps, such as 5 to 7 steps, based on the length of the cane and the dimensions when carried.
- said small diameter part may be manufactured separately from the shaft part, may be adhere
- a well-known thing can be used for the said adhesive agent, It does not specifically limit.
- the small-diameter portion is not limited to a specific material, but when formed using a high-strength organic fiber reinforced resin layer as used in the shaft portion, the connecting portion between the shaft portions can be reinforced well. It is preferable that it is possible to effectively prevent breakage at the connection portion where the stress is easily applied, and it is more preferable that it is formed using only a high-strength organic fiber reinforced resin layer such as para-aramid fiber.
- the folding cane includes a cylindrical joint cover that covers the first connection end and the second connection end connected to each other, and the joint cover has one end connected to the first connection end.
- this joint cover It is preferable because the end can be held tightly and the occurrence of rattling can be suppressed.
- the form of the grip part is not particularly limited as long as the effect of the present invention is not hindered, and examples thereof include an I-shape and a T-shape.
- the grip portion may be made of resin, and may be coated with an outer surface using an arbitrary core material. However, a hollow structure is preferable because the weight can be reduced, and a hollow structure core material is used. Also good.
- the resin material used for the grip portion is not particularly limited as long as the effects of the present invention are not hindered.
- polyester resin polyamide resin (for example, nylon resin such as nylon 6, 66 nylon, MC nylon, etc.), acrylic, etc.
- examples thereof include resins, ABS resins, polyolefin resins (for example, polypropylene resins and polyethylene resins), polybutylene terephthalate resins, polyethylene terephthalate resins, and the like, and resins reinforced with fibers may also be used.
- silicone, nylon, etc. are mentioned as a material used for said core material.
- the grip part is formed using a carbon fiber reinforced resin or a high-strength organic fiber reinforced resin, such as the same material as the shaft part, for example, it can be provided with high strength while being lightweight, and it can be implemented at low cost. This is preferable.
- the grip part can be appropriately set in dimensions such as length and diameter as required, and the production method is not particularly limited, and can be produced using a known method, and a commercially available product can also be used.
- this grip part has a grip body made of a hollow structure extending from the upper end of the shaft part, and the axial orthogonal section of the grip body is larger than the axial orthogonal section of the shaft part.
- the outer surface of the grip body may be exposed to the outside as it is, or a non-slip shape such as an uneven pattern may be formed on the outer surface.
- this grip portion is provided with a non-slip member made of a coating layer such as rubber or synthetic resin, or a non-slip member made of a commercially available grip tape or the like on at least a part of the outer surface of the grip body or the like. It is preferable that the user can securely hold the grip portion.
- the bottom end of the shaft part may be provided with a stone bump.
- This stone bump is not limited to a specific shape or material, but if it is formed using a high-strength organic fiber reinforced resin in which short fibers made of high-strength organic fibers are dispersed in a synthetic resin material, the usage characteristics In addition to being excellent in wear resistance, it is preferable.
- the road surface is lightly tapped or traced with the stone stick at the tip of the cane.
- the stone thrusters react well to the object being explored. For example, when a stone thruster touches the road surface, it behaves as if it jumps lightly. Is different. It is considered that these behaviors and the like are comprehensively influenced by various properties based on the material such as the hardness and density of the stone bump, the elastic modulus, the frictional resistance, and the wear resistance.
- the cane equipped with this stone thruster can convey not only the obstacles and irregularities on the road surface but also the fine irregularities and texture of the road surface to the user, and the road surface in the traveling direction Since the type and the like can be grasped more accurately, there is an advantage that a visually impaired person can obtain a sense of security greatly and can walk more safely. Moreover, since it responds favorably to the object to be explored, it is possible to reduce the necessity of excessively swinging and striking the cane, thereby reducing the burden on the user's hand and wrist. Furthermore, it is possible to suppress an excessive increase in sound when the object to be explored is hit, and there is an advantage that the operability is excellent. From these points, this cane can exhibit excellent usage characteristics, and is particularly advantageous if it is a white cane used by a visually impaired person, because it can function well as a sensor, and is lighter and more durable. There is also.
- the high-strength organic fiber occupying the high-strength organic fiber reinforced resin is not limited to a specific blending amount, but if it is too small, the effect of use characteristics and wear resistance is low, and if it is excessive, it is dispersed in the synthetic resin. Is not easy.
- the blending ratio of the high-strength organic fibers is preferably 10 to 60% by mass, more preferably 20 to 50% by mass.
- the high-strength organic fiber is not limited to a specific material as long as it has high mechanical strength such as tensile strength.
- ultra high molecular weight polyethylene fiber, wholly aromatic polyamide fiber, wholly aromatic polyester fiber, heterocyclic high-performance fiber, polyacetal fiber, etc. are mentioned, and these fibers are used alone or in combination of two or more kinds at an arbitrary ratio.
- para-aramid fiber is preferably used as the high-strength organic fiber, and polyparaphenylene terephthalamide fiber is particularly preferable because it is easily fibrillated and dispersed.
- the above high-strength organic fibers are dispersed in the synthetic resin material in the state of short fibers.
- the short fiber is not limited to a specific thickness or length as long as it can be dispersed in the synthetic resin material, but the fineness of the filament is about 1.1 to 2.3 dtex, and the fiber length is 2 to 8 mm. If it is, it is preferable that it can be dispersed well in the synthetic resin material and that the characteristics such as use characteristics and abrasion resistance necessary for the stone bump can be sufficiently exhibited.
- the above-mentioned synthetic resin is not limited to a specific material as long as it can disperse high-strength organic fibers and can be formed into a stone bump, and is preferably a thermoplastic synthetic resin because it can be easily molded.
- polyester resin polyamide resin (eg nylon resin such as 6 nylon, 66 nylon, MC nylon, etc.), acrylic resin, ABS resin, polyolefin resin (eg polypropylene resin, polyethylene resin etc.), polybutylene A terephthalate resin, a polyethylene terephthalate resin, etc. are mentioned, However, Since a polyamide resin is excellent in abrasion resistance especially, it is preferable.
- the shaft portion Since the carbon fiber reinforced resin layer has high rigidity, the shaft portion does not bend or bend when a force is applied in the axial direction, and the user can use the cane with peace of mind. (2) Since the high-strength organic fiber reinforced resin layer having excellent vibration damping characteristics is provided, the vibration of the tip of the cane can be accurately transmitted to the user. (3) Since the lightweight high-strength organic fiber reinforced resin layer and the high-rigidity carbon fiber reinforced resin layer are combined, the shaft portion and the cylinder have high strength, and the high-strength organic fiber reinforced resin layer It is not necessary to make it excessively thick and can be kept light.
- the high-strength organic fiber reinforced resin layer can be buffered by buckling deformation, and exhibits excellent performance in mechanical strength such as impact resistance.
- the shaft portion can be favorably prevented from breaking.
- the carbon fiber reinforced resin layer is protected by a high-strength organic fiber reinforced resin layer integrated on the outer peripheral surface, preventing severe breakage. Is done. Moreover, it is prevented that the broken carbon fiber protrudes in a thorn shape at the portion subjected to the bending impact.
- a visually handicapped person or the like can safely check a site damaged by the impact by searching for the site.
- the shaft and the cylinder are not easily broken even if they are subjected to a large bending impact from the direction perpendicular to the axis.
- a commercially available repair kit can be used at the site where the impact is received. It can be repaired so that the cane can be used continuously.
- FIG. 1 shows a first embodiment of the present invention
- FIG. 1 (a) is an external view of a straight cane
- FIG. 1 (b) is an end view taken along line AA in FIG. 1 (a).
- It is an external view of a direct cane.
- It is a partially broken figure which shows the laminated structure of the shaft part of 1st Embodiment.
- It is a partially broken figure of the grip part of the cane of a 1st embodiment.
- It is a partially broken perspective view of the cane according to the first embodiment in the vicinity of the stone bump.
- 6 shows a third embodiment of the present invention, FIG.
- FIG. 6 (a) is an external view of a folding cane
- FIG. 6 (b) is an enlarged sectional view of part B of FIG. 6 (a).
- It is an external view of the cane of the folded state of 3rd Embodiment.
- It is sectional drawing of the joint cover vicinity before the connection of the cane of 3rd Embodiment.
- It is sectional drawing of the joint cover vicinity in the connection state of the cane of 3rd Embodiment.
- It is an external view of the grip part which shows the modification 1 of this invention.
- It is a fragmentary figure of the stone thrust vicinity which shows the modification 2 of this invention.
- It is a perspective view showing an emergency repair kit used for repairability measurement.
- FIG. 16 (a) is a photograph of asphalt pavement
- FIG. 16 (b) is a photograph of concrete pavement with pebbles on the surface
- FIG. (c) is a photograph of a concrete pavement formed in a tile shape.
- the comparison table 2 which shows the result of having measured the use characteristic of the stone hammer of this invention in contrast with the comparative example.
- the comparison table 3 which shows the result of having measured the abrasion characteristic of the stone hammer of this invention compared with the comparative example.
- the cane (7) of the first embodiment includes a shaft portion (4), a grip portion (1) provided at the upper end of the shaft portion (4), and a shaft portion ( 4) and a stone bump (6) fixed to the lower end.
- said shaft part (4) is hollow and formed in the cylinder shape whose axis orthogonal cross section is a perfect circle.
- the shaft portion (4) includes a cylindrical high-strength organic fiber reinforced resin layer (31), a carbon fiber reinforced resin layer (32), and a glass fiber reinforced resin layer (33).
- the carbon fiber reinforced resin layer (32) is formed by integrally laminating the first high strength organic fiber reinforced resin layer (31a) on the inner peripheral surface, and the first high strength organic fiber reinforced resin layer.
- a cylindrical first glass fiber reinforced resin layer (33a) is laminated integrally on the inner peripheral surface of (31a).
- a second high-strength organic fiber reinforced resin layer (31b) is integrally laminated on the outer peripheral surface of the carbon fiber reinforced resin layer (32), and the second high-strength organic fiber reinforced resin layer (31b) is laminated. ) Is integrally laminated with a cylindrical second glass fiber reinforced resin layer (33b).
- the second glass fiber reinforced resin layer (33b) is laminated outside the second high-strength organic fiber reinforced resin layer (31b), and a display is provided on the outer peripheral surface thereof.
- a white reflective tape (15) and a red display tape (16) are attached as the layer (34).
- the outside of the display layer (34) is covered with an abrasion-resistant transparent resin layer (35).
- the wear-resistant transparent resin layer (35) is not limited to a specific material as long as it can effectively protect the display layer (34) and has excellent wear resistance and water resistance. .
- an ionomer resin film such as Himiran (trade name, manufactured by Mitsui DuPont Polychemical Co., Ltd.) or the like is used as a single layer or a plurality of layers.
- the cross-sectional area ratio between the hollow portion (17) and the surrounding outer shell portion (18) in the axial cross section of the shaft portion (4) is not limited to a specific ratio. In general, it is in the range of 85:15 to 56:44, and more preferably in the range of 80:20 to 60:40. And more preferably within the range of 75:25 to 62:38.
- the shaft portion (4) is arranged in the direction perpendicular to the axis so that it does not easily break when it receives an impact in the direction perpendicular to the axis.
- the impact resistance against force is preferably 10 J or more, and more preferably 15 J or more from the viewpoint of superior safety and repairability.
- This impact resistance is measured by using an Instron falling weight impact tester (product name: falling weight impact tester Dynat (registered trademark) 9200 series), etc. JIS K 7055: 1995 (glass fiber reinforced plastic). Can be measured according to the three-point bending weight test method described in (3).
- the shaft portion (4) may be a tapered cylindrical body whose outer diameter changes from one end to the other end, but is arbitrary if it is a cylindrical body whose outer diameter does not change from one end to the other end. It is preferable that the above-described shaft portion (4) can be easily manufactured by cutting it into a predetermined dimension.
- the high-strength organic fiber reinforced resin layer (31) constituting the shaft portion (4) can be manufactured by a known method. That is, for example, a high-strength organic fiber such as a para-aramid fiber is impregnated with a resin such as an epoxy resin and formed into a predetermined cylindrical shape, and this is heated at, for example, room temperature to about 130 ° C. to cure the resin. Then, it is manufactured by cutting to a predetermined length.
- the carbon fiber reinforced resin layer (32) and the glass fiber reinforced resin layer (33) are also produced in the same manner.
- the organic fibers constituting the high-strength organic fiber reinforced resin layer (31) are not limited to specific ones.
- ultrahigh molecular weight polyethylene fibers wholly aromatic polyamide fibers, wholly aromatic polyester fibers, and heterocyclic high-performance fibers. Any one of polyacetal fibers and the like can be used alone or in combination of two or more.
- Examples of the carbon fibers constituting the carbon fiber reinforced resin layer (32) include polyacrylonitrile-based carbon fibers and pitch-based carbon fibers.
- Examples of the glass fibers constituting the glass fiber reinforced resin layer (33) include alkali-containing glass fibers, alkali-free glass fibers, and low dielectric glass fibers.
- the organic fiber, carbon fiber, and glass fiber used in the present invention are not limited to these.
- the above ultra high molecular weight polyethylene fiber refers to a fiber made of ultra high molecular weight polyethylene resin.
- the ultrahigh molecular weight polyethylene resin has a molecular weight of about 200,000 or more, preferably about 600,000 or more.
- lower ⁇ -olefins having about 3 to 10 carbon atoms such as propylene, butene, etc.
- those containing a copolymer with pentene, hexene and the like are preferable.
- a copolymer of ethylene and ⁇ -olefin a copolymer in which the latter ratio is about 0.1 to 20 on average per 1000 carbon atoms, preferably about 0.5 to 10 on average is preferable.
- ultrahigh molecular weight polyethylene fibers are disclosed in, for example, Japanese Patent Application Laid-Open Nos. 55-5228 and 55-107506, and methods known per se may be used.
- ultra high molecular weight polyethylene fibers commercially available products such as Dyneema (trade name, manufactured by Toyobo Co., Ltd.), Spectra (trade name, manufactured by Honeywell), Hi-Zex Million (trade name, manufactured by Mitsui Chemicals, Inc.) are used. Also good.
- the above-mentioned wholly aromatic polyamide fiber is not particularly limited, and examples thereof include aramid fiber.
- aramid fiber a para-aramid fiber is preferable.
- the para-aramid fiber include polyparaphenylene terephthalamide fiber (manufactured by Toray DuPont Co., Ltd., trade names: Kevlar 29, 49, 149, etc.) or copolyparaphenylene-3,4'-diphenyl ether terephthalamide fiber (Teijin Ltd.)
- the above-mentioned polyparaphenylene terephthalamide fiber is particularly preferable.
- Such a wholly aromatic polyamide fiber can be produced by a known or equivalent method, and a commercially available product as described above may be used.
- the wholly aromatic polyester fiber is not particularly limited.
- it is a self-condensed polyester of parahydroxybenzoic acid, a polyester composed of terephthalic acid and hydroquinone, or composed of parahydroxybenzoic acid and 6-hydroxy-2-naphthoic acid.
- examples thereof include fibers made of polyester.
- the wholly aromatic polyester fiber can be produced by a known method or a method equivalent thereto, and a commercially available product such as Vectran (trade name, manufactured by Kuraray Co., Ltd.) can also be used.
- the heterocyclic high-performance fiber is not particularly limited, and examples thereof include polyparaphenylene benzobisthiazole (PBZT) fiber and polyparaphenylene benzobisoxazole (PBO) fiber.
- PBZT polyparaphenylene benzobisthiazole
- PBO polyparaphenylene benzobisoxazole
- Heterocyclic high-performance fiber can be produced by a known or equivalent method, and for example, PBO fiber such as XYLON (trade name, manufactured by Toyobo Co., Ltd.) can also be used.
- the said polyacetal fiber is not specifically limited, It can manufacture by the method according to well-known or it, for example, can also use commercial items, such as tenac (brand name, Asahi Kasei Co., Ltd.), delrin (brand name, DuPont). it can.
- the resin impregnated in the above-described high-strength organic fiber, carbon fiber, or glass fiber is not particularly limited as long as the effect of the present invention is not hindered.
- thermosetting such as unsaturated polyester resin and vinyl ester resin. Resin etc. are mentioned.
- a thermoplastic resin is also mentioned. These resins can be used alone or in admixture of two or more at any ratio.
- the epoxy resin examples include diglycidyl ether compounds of bisphenol A, bisphenol AD, bisphenol F or bisphenol S or high molecular weight homologues thereof, phenol novolac type polyglycidyl ethers or cresol novolac type polyglycidyl ethers. Furthermore, these halogenated derivatives can also be used. Furthermore, aromatic epoxy resins obtained by reacting phenols such as bisphenol A, bisphenol AD, bisphenol F, and bisphenol S with these glycidyl ethers in the synthesis process may be used. A resin may be used.
- the epoxy resin is not particularly limited as long as the effect of the present invention is not hindered, and can be obtained by a known production method, and a commercially available product may be used.
- the unsaturated polyester resin is not particularly limited as long as the effects of the present invention are not hindered, and those produced by known methods can be used, and commercially available products may be used.
- it can be obtained by a known production method using an alcohol component composed of a polyhydric alcohol, an ⁇ , ⁇ -unsaturated polyvalent carboxylic acid, and an acid component composed of a saturated polyvalent carboxylic acid and an aromatic polyvalent carboxylic acid.
- the vinyl ester resin is not particularly limited as long as the effects of the present invention are not hindered, and those produced by known methods can be used, and commercially available products may be used.
- the thermoplastic resin is not particularly limited as long as it does not hinder the effects of the present invention, and is a styrene-based thermoplastic resin, a polyolefin-based thermoplastic resin, a polyvinyl chloride-based thermoplastic resin, a polyurethane-based thermoplastic resin, a polyester-based thermoplastic resin. Any thermoplastic resin such as a resin or a polyimide-based thermoplastic resin may be used, but a polyolefin-based thermoplastic resin is preferable.
- polystyrene-type thermoplastic resins such as a polypropylene resin, a polystyrene resin, an acrylonitrile butadiene styrene resin (ABS resin), etc. are mentioned.
- synthetic resins such as ethylene / propylene rubber (EPDM), styrene / butadiene copolymer synthetic rubber (SBR), and nitrile rubber (NBR) can be used.
- EPDM ethylene / propylene rubber
- SBR styrene / butadiene copolymer synthetic rubber
- NBR nitrile rubber
- the content ratio of the fiber and the resin in each of the above layers is not limited to a specific value as long as the effect of the present invention is not hindered, and varies depending on the type of organic fiber or resin and the molding size, but is lightweight and has sufficient bending rigidity.
- the weight ratio is set within the range of 80:20 to 60:40 from the viewpoint of ensuring the desired strength and being light enough to withstand long-term use, being hard to break, and having excellent safety and repairability. More preferably, it is set within the range of 75:25 to 65:35, and further preferably within the range of 70:30 to 67:33.
- the above “appropriate strength” means strength for combining the effects of the present invention.
- the shaft portion (4) preferably has a specific gravity of about 1.30 to 1.45, although it varies depending on the type of high-strength organic fiber and resin used, the content ratio, and the like. Is more preferable, and 1.33 to 1.36 is particularly preferable.
- the weight and strength of the cane (7) are the thickness of the cane (7), the thickness of the outer shell (18), and the fiber and resin used in each fiber reinforced resin layer (31, 32, 33). In addition to the ratio and thickness, it varies depending on the type of resin. However, since high-strength organic fibers have a lower specific gravity than carbon fibers, a lighter and stronger cane is achieved by reducing the number of carbon fiber-reinforced resin layers (32) and increasing the number of high-strength organic fiber resin layers (31). (7) is obtained.
- the specific gravity of the shaft portion (4) is not limited to a specific value, but is preferably 1.30 to 1.45, and sufficient bending with respect to the axial force of the shaft portion (4) is sufficient. It is more preferably 1.32 to 1.37, and particularly preferably 1.33 to 1.36 from the viewpoint of rigidity and light weight enough to withstand long-term use.
- the grip portion (1) in the first embodiment is formed in an I-shape, and a connecting material (2), a strap (3), and the like are attached to arbitrary portions as necessary.
- the grip portion (1) may be formed in another shape such as a T-shape.
- the length and thickness of the grip portion (1) are appropriately set to dimensions that can be securely gripped by the user.
- the grip portion (1) includes a grip body (19) having a hollow structure extending upward from the upper end of the shaft portion (4).
- the grip body (19) may be formed integrally with the shaft portion (4) by expanding one end of the shaft portion (4) into a predetermined shape by, for example, blow molding or vacuum forming.
- the grip body (19) has an axial cross section that is larger than the cross section of the shaft portion (4). Since it has a hollow structure, the grip portion (1) can be easily reduced in weight, and since it is formed using the same fiber reinforced resin material as the shaft portion (4), the grip portion (1) having high strength can be formed. It can be manufactured at low cost.
- a separate grip portion (1) may be fixed to the upper end of the shaft portion (4) with an adhesive or the like. Moreover, this grip part (1) may coat
- a commercially available product can be used for these grip portions (1), but they can be manufactured using a known method, and the manufacturing method is not particularly limited, and dimensions such as length and diameter are as required. Set as appropriate.
- the resin material used for the grip portion (1) is not particularly limited as long as the effect of the present invention is not hindered.
- polyester resin, polyamide resin (for example, nylon resin such as nylon 6, 66 nylon, MC nylon, etc.) ), Acrylic resin, ABS resin, polyolefin resin (eg, polypropylene resin, polyethylene resin, etc.), polybutylene terephthalate resin, polyethylene terephthalate resin, and the like, and a resin reinforced with fibers may be used.
- silicone, nylon, etc. are mentioned as a material used for said core material.
- the outer surface of the grip body (19) may be exposed to the outside as it is.
- the grip body (19) may be formed in a non-slip shape such as a concavo-convex pattern, or may be provided with a non-slip member (20) as shown in FIG. It is preferable that the user can easily hold the grip portion (1).
- the non-slip member (20) may be a member to which a synthetic resin such as urethane or a rubber material is attached, for example. Alternatively, these materials may be formed in a tape shape around the grip portion. It may be worn. In particular, it is preferable that a tape-like non-slip member (20) is attached because it can be easily replaced with a new non-slip member (20) when the anti-slip member (20) is damaged due to wear or the like.
- the above-mentioned stone thrust (6) is attached to the lower end of the shaft portion (4).
- This stone bump (6) is made of a high strength organic fiber reinforced resin and is formed into a so-called tear drop type (teardrop type) in which the upper half is a truncated cone and the lower half is a spherical surface. is there.
- a mounting hole (25) is recessed in the upper end of the stone bump (6), and the lower end of the shaft portion (4) is fitted in and fixed to the mounting hole (25).
- the stone thrust (6) does not come off from the shaft portion (4) during use.
- the stone bump (6) is externally fitted to the lower end of the shaft portion (4) as described above, so that the lower end portion of the shaft portion (4) can be protected by the stone bump (6).
- a rod-like mounting portion may be provided on the top of the stone thrust (6), and the mounting portion may be inserted into the lower end of the shaft portion (4) to be fixed.
- the thickness and the length of the stone bump (6) can be appropriately set within a range not impeding the effects of the present invention.
- the outer diameter is larger than the outer diameter of the shaft portion (4). It is formed and set to a size that does not easily fit into a lattice of groove covers arranged on the road surface. Further, the outer surface of the stone bump (6) is formed into a smooth curved surface so that it is not easily caught on a stepped portion such as a road surface or a staircase or an obstacle.
- the high-strength organic fiber reinforced resin forming the above-mentioned stone bump (6) is obtained by dispersing short fibers made of high-strength organic fibers in a synthetic resin material. If the amount of the high-strength organic fiber is too small, the sensor function of the stone bump (6) is not sufficiently exhibited, and if it is excessively large, it is not easy to disperse in the synthetic resin material. For this reason, the ratio of the high-strength organic fiber to the high-strength organic fiber-reinforced resin material is preferably 10 to 60% by mass, more preferably 20 to 50% by mass.
- the high-strength organic fiber examples include, as described above, the high-strength organic fiber constituting the shaft portion (4), such as ultrahigh molecular weight polyethylene fiber, wholly aromatic polyamide fiber, wholly aromatic polyester fiber, and heterocyclic high-performance fiber. , Polyacetal fibers and the like, and any of them can be used alone or in combination of two or more. Specifically, para-aramid fibers are preferably used, and polyparaphenylene terephthalamide fibers are particularly preferable.
- the size of the high-strength organic fiber dispersed in the synthetic resin material is different depending on the type of the high-strength organic fiber and the synthetic resin material, but the fineness of the filament is about 1.1 to 2.3 dtex, A fiber length of about 2 to 8 mm is preferable because it can be dispersed well.
- the synthetic resin material in which the high-strength organic fibers are dispersed may be a thermosetting synthetic resin or the like, but a thermoplastic synthetic resin is preferable because the stone bump (6) can be easily formed into a predetermined shape.
- the thermoplastic synthetic resin is not limited to a specific material. For example, if it is a polyamide resin such as 6 nylon, 66 nylon, or MC nylon, it is possible to disperse high-strength organic fibers or to mold the stone bump (6). It is preferable because it is easy and has excellent wear resistance.
- the high-strength organic fiber reinforced resin may be blended with any fiber material such as polyamide fiber in addition to the high-strength organic fiber, and further, wear resistance, durability, light resistance, etc. Any additive, filler, colorant or the like for increasing the viscosity may be added.
- a cylindrical glass fiber reinforced resin layer (33b) may be laminated on the outside of the display layer (34).
- the display layer (34) is formed outside the second high-strength organic fiber reinforced resin layer (31b), and the second glass fiber reinforced resin layer (33b) is integrally formed on the outside. It is laminated. Since the second glass fiber reinforced resin layer (33b) is transparent, the display layer (34) is visually observed from the outside, and the second glass fiber reinforced resin layer (33b) Since it is excellent in water resistance, it is possible to prevent the display layer (34) from being worn or peeled off due to water. In addition, unlike the first embodiment described above, the wear-resistant transparent resin layer is not required, so that the cost can be reduced accordingly.
- the other configuration is the same as that of the first embodiment described above, and functions in the same manner, so that the description thereof is omitted.
- the straight cane has been described.
- a folding cane may be used. That is, in the third embodiment, as shown in FIG. 6A, as in the first embodiment, the shaft portion (4), the grip portion (1) provided at the upper end of the shaft portion (4), It has a stone thrust (6) fixed to the lower end of the shaft portion (4).
- the shaft portion (4) is composed of a plurality of, for example, five shaft portions (14) that can be connected to and separated from each other.
- a cylindrical joint cover (5) is provided at the connecting portion.
- said grip part (1) is integrally formed in the extended state at the upper end of the uppermost shaft part (14).
- the shaft portion (14) is formed in a hollow cylindrical shape having a perfectly perpendicular axis, and as shown in FIG. It comprises a fiber reinforced resin layer (32) and a high-strength organic fiber reinforced resin layer (31) integrally formed on the inner and outer peripheral surfaces thereof, and a glass fiber reinforced resin layer (33) on the outer and inner sides, respectively.
- a white reflective tape (15) or a red display tape (16) is adhered to the outer peripheral surface of the second glass fiber reinforced resin layer (33b), and the outer side thereof is attached to the wear-resistant transparent resin layer (35 ).
- the adjacent shaft portion (14) has an inner pipe (9) fixed to the first connecting end (21) of one shaft portion (14) as a small diameter portion.
- a rubber string (8) connecting the shaft portions (14) to each other is inserted into the inner pipe (9).
- the protruding length of the inner pipe (9) protruded outward from the first connecting end (21) is not limited to a specific dimension, and the length that allows the shaft portions (14) to be securely connected to each other is not limited. For example, it is set to about 30 to 50 mm.
- the rubber cord (8) may be elastic or stretchable so that the shaft portions (14) can be easily separated and connected to each other.
- the material and thickness are not particularly limited, and a known one is used. can do.
- the inner pipe (9) is formed to have an outer diameter substantially equal to the inner diameter of the shaft portion (14), and is inserted into and removed from the second connecting end portion (22) of the other shaft portion (14) facing each other. It is configured to be possible. In this embodiment, one end of the inner pipe (9) formed separately from the shaft portion (14) is press-fitted into the first connecting end (21) or fixed by a known adhesive or the like. is there. However, in the present invention, the small diameter portion may be formed integrally with the connecting end portion of the shaft portion (14).
- the inner pipe (9) is not limited to a specific material, but is preferably provided with a high-strength organic fiber reinforced resin layer or glass fiber reinforced resin layer as used in the shaft portion (14), particularly para-aramid fibers. It is more preferable to provide only a high-strength organic fiber reinforced resin layer. However, it is preferable that the carbon fiber reinforced resin layer is not included unlike the shaft portion (14).
- the joint cover (5) may be a cylindrical shape that can connect the shaft portions (14) to each other, and is not limited to a specific shape. However, this outer surface is preferably a smooth shape that does not catch on other objects, for example, it is formed in a cylindrical shape with a slightly smaller diameter at both ends, and a ring-shaped receiving portion ( 23) is formed.
- the rubber cord (8) is inserted into the receiving portion (23).
- the first connecting end (21) is inserted from one end of the joint cover (5) so that the tip is in contact with the receiving portion (23), and firmly fixed by press-fitting or a known adhesive. It is.
- the other end of the joint cover (5) is opened to face the second connecting end (22), and an insertion portion (24) is formed in this end.
- the shaft portions (14) are connected to each other, and by removing from the insertion portion (24), the shaft portion (14) They are separated from each other.
- the insertion portion (24) includes a tapered portion (10) having a small diameter inward from the outer end, and the receiving portion (23) further inward from the inner end of the tapered portion (10). And a straight portion (11) having a predetermined inner diameter extending up to.
- the inner diameter of the straight portion (11) is set to a dimension that securely tightens the outer peripheral surface of the second connecting end portion (22) without rattling.
- the length of the joint cover (5) is not limited to a specific dimension, and can be appropriately set within a range that does not hinder the effects of the present invention.
- the length of the straight portion (11) may be a length that can suppress the occurrence of rattling at the connecting portion, and is not limited to a specific dimension as long as the effect of the present invention is not hindered. If the length is too long, the connecting / separating operation is not easy, so about 20 to 80% of the outer diameter of the shaft portion (4) is usually preferable.
- the joint cover (5) is manufactured using, for example, polyamide such as nylon 6.
- the joint cover (5) is not limited to a specific material as long as the connecting portion can be securely held and the effect of the present invention is not hindered.
- a thermosetting resin such as an epoxy resin, an unsaturated polyester resin, or a vinyl ester resin may be used.
- a polyester resin or a polyamide resin for example, nylon resin such as nylon 6, 66 nylon, MC nylon, or the like
- Acrylic resin ABS resin
- polyolefin resin eg, polypropylene resin, polyethylene resin, etc.
- thermoplastic resin such as polybutylene terephthalate resin, polyethylene terephthalate resin, etc.
- materials having rubber elasticity such as synthetic rubber and elastomer May be used.
- This joint cover (5) can be manufactured by a known method, and a known additive, a pigment or the like may be added as needed at the time of production, and a resin reinforced with fibers may be used. You may color after manufacture.
- the second connecting end portion (22) When the second connecting end portion (22) is inserted into the insertion portion (24) of the joint cover (5), the second connecting end portion (22) is smoothly formed by the tapered portion (10). The leading end of the second connecting end portion (22) is guided by the receiving portion (23) through the straight portion (11), and is connected as shown in FIG. In this connected state, the outer peripheral surface of the second connecting end portion (22) is fastened by the inner surface of the straight portion (11), and the occurrence of rattling is suppressed.
- the cane (7) can be used safely by reducing the risk of breakage of the cane (7) due to the stress concentration and the user's fall. Further, since there is no backlash, there is no risk that the connecting end portions will be rubbed and worn at an early stage during the connecting / separating operation, and the durability of the cane (7) can be improved. Furthermore, since the axis
- the shaft portions (14) may be simply inserted / extracted between the connecting end portions and the small-diameter portion (9) provided on the shaft portions (14).
- the connecting end portions are formed in a special structure such as a screwing mechanism. Since it is not necessary, it can be manufactured at a low cost with a simple structure, and can be easily connected and disconnected, which is preferable.
- one end of the joint cover (5) is fixed to the first connecting end (21), and the second connecting end (22) is inserted into the other end. It was comprised so that insertion / extraction was possible.
- one end portion of the joint cover (5) is fixed to the second connecting end portion (22) of the shaft portion (14) not provided with the small diameter portion, and another shaft having the small diameter portion is provided. You may comprise so that the 1st connection edge part (21) of a part (14) can be inserted / extracted in the other edge part of a joint cover (5).
- said stone thrust (6) is formed in the standard type which became the cylindrical shape of the smooth aspect of the lower part, and the upper part is smoothly with the outer peripheral surface of a shaft part (4). In order to be continuous, it is formed in a curved surface having a smaller diameter at the upper end.
- the stone bump (6) is made of high-strength organic fiber reinforced resin, and the lower end of the shaft portion (4) is inserted into the mounting hole (25) recessed at the upper end. The inner fitting is fixed.
- Other configurations such as the above-described grip portion (1) are the same as those in the first embodiment and operate in the same manner, and thus the description thereof is omitted.
- FIG. 10 (a) shows a cane (7) having a so-called T-shaped grip portion (1)
- FIG. 10 (b) shows a cane (7) having an L-shaped grip portion (1).
- the grip portion (1) is extended at the upper end of the shaft portion (4).
- the stone bump (6) used in the present invention is not limited to a specific shape as long as the use as a walking stick is not hindered.
- the standard type stone thruster described above uses a stepped standard type stone thruster (6) having a small upper portion and reduced catching on other objects as in Modification 2 shown in FIG. 11, for example. It is also possible.
- Example 1 As the high-strength organic fiber, Kevlar K-29 1670 dtx (manufactured by Toray DuPont Co., Ltd.), which is a polyparaphenylene terephthalamide fiber, was used. Using this organic fiber, a UD (unidirectional fiber) sheet having a basis weight of 73 g / m 2 was prepared, and this was impregnated with an epoxy resin by a hot melt method so that the resin content ratio was 67:33, A high-strength organic fiber prepreg having a basis weight of 110 g / m 2 was obtained.
- Kevlar K-29 1670 dtx manufactured by Toray DuPont Co., Ltd.
- trading card registered trademark, manufactured by Toray Industries, Inc.
- This prepreg is a carbon fiber prepreg having a basis weight of 330 g / m 2 by impregnating a UD sheet having a basis weight of 220 g / m 2 with an epoxy resin so that the resin content is 67:33.
- glass cloth WPA-240D manufactured by Nitto Boseki Co., Ltd.
- UD sheet with a basis weight of 100 g / m 2 is used as the glass fiber, and an epoxy resin is hot in this glass cloth so that the resin content is 67:33
- a glass fiber prepreg having a basis weight of 150 g / m 2 was obtained by impregnation by a melt method.
- one layer of glass fiber prepreg, three layers of high-strength organic fiber prepreg, one layer of carbon fiber prepreg, two layers of high-strength organic fiber prepreg, and one layer of glass fiber prepreg are laminated in order, and the whole is heated and cured, and then a reflective tape is wound around the surface. Further, a 0.06 mm thick high-milan film (product) Name, Mitsui DuPont Polychemical Co., Ltd.) was laminated to cover the above reflective tape, and a cylinder of Example 1 was obtained.
- Each of the obtained cylindrical bodies had an outer diameter of 12 mm, and the cross-sectional area ratio between the hollow portion and the outer shell portion was 67:33.
- characteristic values of rigidity (flexibility), impact resistance, safety, and on-site repairability were measured by the following measurement methods.
- the emergency repair kit (26) includes a pair of semi-cylindrical holding plates (13) as shown in FIG. 12, for example.
- Example 1 of the present invention the rigidity is superior to that of Comparative Example 2, and when the impact is applied, it is only slightly bent, and the impact resistance against the force from the axis orthogonal direction of the cylinder is excellent.
- the part subjected to the impact is excellent in safety because the fiber does not protrude like a splinter, and is excellent in repairability on site because it does not break.
- Example 1 of the present invention includes a glass fiber reinforced resin layer on the inner surface, unlike the above Comparative Example 2 in which all layers are formed of a high-strength organic fiber prepreg, the wear resistance of the inner surface is excellent. For example, even if it is a foldable cane in which a rubber cord is arranged in the shaft portion, there is no possibility that the end portion of the shaft portion will be worn at an early stage by the rubber cord.
- Example 1 since the wear-resistant transparent resin film is arranged on the outer peripheral surface of the reflective tape wound around the outer surface, the wear resistance of the outer peripheral surface is compared with the conventional product in which this film is omitted. Is remarkably excellent, and the reflective tape can be satisfactorily prevented from being worn. In order to confirm this, the wear resistance of the outer surface was measured by the following measuring method.
- a cloth file having a width of 25 mm and a length of 300 mm (grain size # 240, manufactured by Noritake Coated Abrasive Co., Ltd.) is used. As shown in FIG. 15, the shaft part (4) is kept horizontal, and the cloth file (36) is placed in a horizontal state in a direction of 90 degrees with respect to the axial direction of the shaft part (4). Further, the shaft portion (4) is disposed across the horizontal direction and the vertical direction so as to be in contact with a quarter portion (90-degree portion) from the upper surface to the vertical surface. A load (37) of 330 g is suspended at the lower end of the vertical portion of the cloth file (36). ) Worn surface.
- Example 1 of this invention which has arrange
- a teardrop type stone thruster (6) is attached to the cylindrical body of Example 1 to give Example 2, and the actual road surface shown in FIG.
- Information transmission and operability were measured as targets, and the bumping property was also measured for unevenness such as anti-skid tools for stairs and grooves on road surfaces.
- the road surface used for the measurement is asphalt pavement shown in FIG. 16 (a), concrete pavement with pebbles on the surface shown in FIG. 16 (b), and concrete formed in a tile shape shown in FIG. 16 (c).
- the above stone bump (6) is made of a high-strength organic fiber reinforced resin material and is formed into a teardrop type having a maximum outer diameter of 26.1 mm and a total length of 40.4 mm, and a mounting hole with an inner diameter of 13 mm formed at the upper end.
- the lower end of the shaft portion (4) having an outer diameter of 12.5 mm was inserted and fixed with an adhesive.
- the high-strength organic fiber reinforced resin material a material obtained by dispersing short fibers of polyparaphenylene terephthalamide fiber in polyamide resin (nylon 6) was used.
- the polyparaphenylene terephthalamide fibers used were 1.7 decitex filaments cut to a fiber length of 6 mm, mixed with a polyamide resin and dispersed.
- the blending ratio of the high-strength organic fiber reinforced resin material was 70% by mass for polyamide resin and 30% by mass for polyparaphenylene terephthalamide fiber.
- the measurement results of each of the above-mentioned use characteristics while comparing with the conventional cane stab are shown in the measurement result comparison table 2 of FIG.
- the conventional stone bumps used for comparison were all made of polyamide resin (PA6), the standard type was Comparative Example 3, the teardrop type was Comparative Example 4, and the palm chip type was Comparative Example 5.
- the palm chip type of Comparative Example 5 is an arrangement in which an elastic member is disposed between the ground contact portion of the stone bump and the shaft portion, as described in, for example, WO 07/058180 pamphlet. Used the thing which has arrange
- Example 2 As is apparent from the results of the above measurements, in Comparative Examples 3 to 5 described above, none of the road surface types could be easily identified and the information transmission was poor. In Example 2, the above three types of road surfaces could be easily identified, and extremely excellent information transmission performance could be exhibited. That is, in each of Comparative Examples 3 to 5 described above, there is a feeling that the stone bump sticks to the road surface, for example, when writing characters with crayons, and the type of road surface cannot be easily detected. It was. On the other hand, in Example 2 of the present invention, for example, when writing a character with a pencil, the contact with the road surface of the stone bump is light and there is a contact that jumps slightly, and the feeling is clearly different depending on the type of the road surface. .
- Example 2 of the present invention was able to demonstrate operability superior to Comparative Example 3 and Comparative Example 5 as well as Comparative Example 4. That is, in the comparative example 4, the burden added to a user's hand and neck at the time of operation was large, and it was inferior to operativity. In the comparative example 3 and the comparative example 5, compared with this comparative example 4, the said burden was small and operativity was favorable.
- the test body used was a high-strength organic fiber reinforced resin material used for the standard type stone thrust adopted in the third embodiment as Example 3.
- This high-strength organic fiber reinforced resin material is made of polyamide resin (66 nylon) reinforced by blending short fibers of polyparaphenylene terephthalamide fiber as high-strength organic fibers.
- strength organic fiber with respect to fiber reinforced resin is 30 mass%.
- a molded article made of a single polypropylene resin (PP) was used as Comparative Example 6
- a molded article made of a single polyamide resin (Nylon 6) was used as Comparative Example 7.
- Test specimen Ring (hollow cylindrical shape) -Partner material: SUS304 ring (hollow cylindrical shape), surface roughness adjustment is # 1000 polishing paper finish (0.1 ⁇ m Ra>).
- Example 3 The test results are as shown in the measurement result comparison table 3 shown in FIG.
- Comparative Example 6 molded with polypropylene resin wears out early, and Comparative Example 7 molded with polyamide resin has a large wear mass and becomes high temperature due to friction. Has melted.
- Example 3 of the present invention since high-strength organic fiber reinforced resin was used, steady wear was maintained until the end of the test time, and the wear mass was also slight. Thereby, it was confirmed that the stone bump formed using the high-strength organic fiber reinforced resin of the present invention has excellent wear resistance.
- the shaft portion and the grip portion are integrally formed. However, in the present invention, they may be formed separately from each other and fixed to each other.
- the joint cover can be omitted for an arbitrary connecting portion.
- the joint cover may be provided in the lowermost connecting portion which is easily broken, and the joint cover may be omitted for the other connecting portions.
- the display layer is formed of a reflective tape or a display tape.
- the present invention may use other display layers, or may omit these display layers.
- the cane of the present invention is useful as a cane for sports such as mountain climbing and skiing or normal walking in addition to a white cane for the visually impaired.
- the cane of the present invention can reduce the physical burden on the user, and is particularly effective for elderly people, young people, and visually impaired people. It is also useful for improving productivity.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Pain & Pain Management (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Rehabilitation Therapy (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- Physical Education & Sports Medicine (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Composite Materials (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Rehabilitation Tools (AREA)
- Golf Clubs (AREA)
Abstract
Description
すなわち、本発明は杖に関し、シャフト部(4)とこのシャフト部(4)の上端にグリップ部(1)とを有する杖であって、上記のシャフト部(4)は高強度有機繊維強化樹脂層(31)と炭素繊維強化樹脂層(32)とを備えており、上記の炭素繊維強化樹脂層(32)は、少なくともその外周面に上記の高強度有機繊維強化樹脂層(31)が一体的に積層してあることを特徴とする。 In order to solve the above-described problems, the present invention is described as follows, for example, based on FIGS. 1 to 18 showing an embodiment of the present invention.
That is, the present invention relates to a cane, which is a cane having a shaft portion (4) and a grip portion (1) at the upper end of the shaft portion (4), wherein the shaft portion (4) is a high-strength organic fiber reinforced resin. Layer (31) and a carbon fiber reinforced resin layer (32), and the carbon fiber reinforced resin layer (32) is integrated with the high-strength organic fiber reinforced resin layer (31) at least on the outer peripheral surface thereof. It is characterized by being laminated.
上記の炭素繊維は、曲げ衝撃に対して折損し易いものの、上記の炭素繊維強化樹脂層はその外周面に高強度有機繊維強化樹脂層が一体的に積層してあるので、シャフト部や筒体が軸直交方向から衝撃をうけて炭素繊維が仮に折損しても、炭素繊維強化樹脂層が高強度有機繊維強化樹脂層で保護され、シャフト部や筒体は座屈変形するだけで、激しく破断することが防止され、しかも折損した炭素繊維がトゲ状に突出することが防止される。そしてこのシャフト部等が座屈変形した杖は、例えば市販の補修キット等を用いることで容易に補修される。 The carbon fiber reinforced resin layer provided in the shaft part and the cylinder has high rigidity because the carbon fiber has a higher elastic modulus than the organic fiber, and the high strength organic fiber reinforced resin layer is excessively thick. There is no need to form.
Although the above carbon fiber is easily broken against bending impact, the carbon fiber reinforced resin layer is integrally laminated with a high-strength organic fiber reinforced resin layer on its outer peripheral surface. Even if the carbon fiber is broken due to an impact from the direction perpendicular to the axis, the carbon fiber reinforced resin layer is protected by the high-strength organic fiber reinforced resin layer, and the shaft and the cylinder are only buckled and severely broken. In addition, the broken carbon fiber is prevented from protruding in a thorn shape. The cane with the shaft portion or the like buckled and deformed is easily repaired by using, for example, a commercially available repair kit.
しかしながらこのグリップ部は、上記のシャフト部の上端から延設した中空構造からなるグリップ本体を有し、このグリップ本体の軸直交断面が上記のシャフト部の軸直交断面よりも大形であると、使用者が確りと把持できる太さに形成したものでありながら、軽量にできて好ましい。なおこのグリップ本体の外表面は、そのまま外部に露出してもよく、その外表面に、例えば凹凸模様など滑り止めの形状を形成したものであっても良い。しかしこのグリップ部は、上記のグリップ本体等の外表面の少なくとも一部に、ゴムや合成樹脂等の被覆層からなる滑止め部材を形成したり、市販のグリップテープ等からなる滑止め部材を備えると、使用者が確実にこのグリップ部を把持できて好ましい。 The grip part can be appropriately set in dimensions such as length and diameter as required, and the production method is not particularly limited, and can be produced using a known method, and a commercially available product can also be used.
However, this grip part has a grip body made of a hollow structure extending from the upper end of the shaft part, and the axial orthogonal section of the grip body is larger than the axial orthogonal section of the shaft part. Although it is formed in a thickness that can be securely gripped by the user, it is preferable because it can be made lightweight. Note that the outer surface of the grip body may be exposed to the outside as it is, or a non-slip shape such as an uneven pattern may be formed on the outer surface. However, this grip portion is provided with a non-slip member made of a coating layer such as rubber or synthetic resin, or a non-slip member made of a commercially available grip tape or the like on at least a part of the outer surface of the grip body or the like. It is preferable that the user can securely hold the grip portion.
(2)振動減衰特性に優れた高強度有機繊維強化樹脂層を備えているので、杖先端の振動等を使用者の手元へ適確に伝えることができる。
(3)軽量の高強度有機繊維強化樹脂層と高い剛性の炭素繊維強化樹脂層とを組み合わせてあるので、シャフト部や筒体は高い強度を備えているうえ、高強度有機繊維強化樹脂層を過剰に厚くする必要がなく、軽量に維持することができる。
(4)高強度有機繊維強化樹脂層を備えているので、杖の先端で地面や障害物等を叩いても、その衝撃で高強度有機繊維に微小クラックを発生させる虞がなく、耐久性に優れる。 (1) Since the carbon fiber reinforced resin layer has high rigidity, the shaft portion does not bend or bend when a force is applied in the axial direction, and the user can use the cane with peace of mind.
(2) Since the high-strength organic fiber reinforced resin layer having excellent vibration damping characteristics is provided, the vibration of the tip of the cane can be accurately transmitted to the user.
(3) Since the lightweight high-strength organic fiber reinforced resin layer and the high-rigidity carbon fiber reinforced resin layer are combined, the shaft portion and the cylinder have high strength, and the high-strength organic fiber reinforced resin layer It is not necessary to make it excessively thick and can be kept light.
(4) Since it is equipped with a high-strength organic fiber reinforced resin layer, there is no risk of microcracks being generated in the high-strength organic fiber by the impact even if the ground or an obstacle is struck with the tip of the cane. Excellent.
(6)軸直交方向から大きな曲げ衝撃を受けて炭素繊維が折損しても、炭素繊維強化樹脂層は外周面に一体化した高強度有機繊維強化樹脂層で保護され、激しく破断することが防止される。また、上記の曲げ衝撃を受けた部位で、折損した炭素繊維がトゲ状に突出することが防止される。この結果、例えば視覚障害者等は、この衝撃をうけて損傷した部位を手探り等で安全に確認することができる。
(7)シャフト部や筒体は、軸直交方向から大きな曲げ衝撃を受けても容易に破断することがないので、例えばその衝撃を受けた現場において、例えば市販の補修キット等を用いて簡単に補修でき、これによりその杖等を継続して使用することができる。 (5) Even when subjected to a large bending impact from the direction perpendicular to the axis, the high-strength organic fiber reinforced resin layer can be buffered by buckling deformation, and exhibits excellent performance in mechanical strength such as impact resistance. The shaft portion can be favorably prevented from breaking.
(6) Even if the carbon fiber breaks due to a large bending impact from the direction perpendicular to the axis, the carbon fiber reinforced resin layer is protected by a high-strength organic fiber reinforced resin layer integrated on the outer peripheral surface, preventing severe breakage. Is done. Moreover, it is prevented that the broken carbon fiber protrudes in a thorn shape at the portion subjected to the bending impact. As a result, for example, a visually handicapped person or the like can safely check a site damaged by the impact by searching for the site.
(7) The shaft and the cylinder are not easily broken even if they are subjected to a large bending impact from the direction perpendicular to the axis. For example, at the site where the impact is received, for example, a commercially available repair kit can be used. It can be repaired so that the cane can be used continuously.
図1(a)に示すように、この第1実施形態の杖(7)は、シャフト部(4)と、このシャフト部(4)の上端に設けたグリップ部(1)と、シャフト部(4)の下端に固設した石突き(6)とを有している。 Hereinafter, the present invention will be specifically described with reference to the drawings.
As shown in FIG. 1 (a), the cane (7) of the first embodiment includes a shaft portion (4), a grip portion (1) provided at the upper end of the shaft portion (4), and a shaft portion ( 4) and a stone bump (6) fixed to the lower end.
即ち、上記の炭素繊維強化樹脂層(32)は、その内周面に第1高強度有機繊維強化樹脂層(31a)が一体的に積層してあり、その第1高強度有機繊維強化樹脂層(31a)のさらに内周面に筒状の第1ガラス繊維強化樹脂層(33a)が一体的に積層してある。また、上記の炭素繊維強化樹脂層(32)の外周面には第2高強度有機繊維強化樹脂層(31b)が一体的に積層してあり、その第2高強度有機繊維強化樹脂層(31b)の外周面に筒状の第2ガラス繊維強化樹脂層(33b)が一体的に積層してある。 As shown in FIG.1 (b), said shaft part (4) is hollow and formed in the cylinder shape whose axis orthogonal cross section is a perfect circle. As shown in FIG. 2, the shaft portion (4) includes a cylindrical high-strength organic fiber reinforced resin layer (31), a carbon fiber reinforced resin layer (32), and a glass fiber reinforced resin layer (33). Yes.
That is, the carbon fiber reinforced resin layer (32) is formed by integrally laminating the first high strength organic fiber reinforced resin layer (31a) on the inner peripheral surface, and the first high strength organic fiber reinforced resin layer. A cylindrical first glass fiber reinforced resin layer (33a) is laminated integrally on the inner peripheral surface of (31a). A second high-strength organic fiber reinforced resin layer (31b) is integrally laminated on the outer peripheral surface of the carbon fiber reinforced resin layer (32), and the second high-strength organic fiber reinforced resin layer (31b) is laminated. ) Is integrally laminated with a cylindrical second glass fiber reinforced resin layer (33b).
また上記の炭素繊維強化樹脂層(32)を構成する炭素繊維としては、例えばポリアクリロニトリル系炭素繊維、ピッチ系炭素繊維等が挙げられる。また上記のガラス繊維強化樹脂層(33)を構成するガラス繊維としては、例えば含アルカリガラス繊維、無アルカリガラス繊維、低誘電ガラス繊維等が挙げられる。但し本発明に用いる有機繊維や炭素繊維、ガラス繊維は、これらのものに限定されない。 The organic fibers constituting the high-strength organic fiber reinforced resin layer (31) are not limited to specific ones. For example, ultrahigh molecular weight polyethylene fibers, wholly aromatic polyamide fibers, wholly aromatic polyester fibers, and heterocyclic high-performance fibers. Any one of polyacetal fibers and the like can be used alone or in combination of two or more.
Examples of the carbon fibers constituting the carbon fiber reinforced resin layer (32) include polyacrylonitrile-based carbon fibers and pitch-based carbon fibers. Examples of the glass fibers constituting the glass fiber reinforced resin layer (33) include alkali-containing glass fibers, alkali-free glass fibers, and low dielectric glass fibers. However, the organic fiber, carbon fiber, and glass fiber used in the present invention are not limited to these.
また上記の石突き(6)は、上記のようにシャフト部(4)の下端に外嵌すると、このシャフト部(4)の下端部を石突き(6)で保護できて好ましい。しかし本発明では、例えばこの石突き(6)の上部に棒状等の装着部を突設し、この装着部を上記のシャフト部(4)の下端内へ挿入することで固定してもよい。 In addition, when the above-mentioned stone thrust (6) is fixed to the shaft portion (4) in an inseparable manner with an adhesive or the like, the stone thrust (6) does not come off from the shaft portion (4) during use. However, it is preferable to fix it so as to be separable by press-fitting or the like so that it can be easily replaced with a new stone thruster (6) when the stone thruster (6) is worn.
Further, it is preferable that the stone bump (6) is externally fitted to the lower end of the shaft portion (4) as described above, so that the lower end portion of the shaft portion (4) can be protected by the stone bump (6). However, in the present invention, for example, a rod-like mounting portion may be provided on the top of the stone thrust (6), and the mounting portion may be inserted into the lower end of the shaft portion (4) to be fixed.
即ちこの第3実施形態では、図6(a)に示すように、第1実施形態と同様、シャフト部(4)と、このシャフト部(4)の上端に設けたグリップ部(1)と、シャフト部(4)の下端に固設した石突き(6)とを有している。しかしこの第3実施形態では、第1実施形態と異なって、上記のシャフト部(4)は互いに連結・分離可能な複数の、例えば5つのシャフト部分(14)からなり、シャフト部分(14)同士の連結部分に、これを覆う筒状のジョイントカバー(5)が備えてある。そして上記のグリップ部(1)は、最も上段のシャフト部分(14)の上端に、延設した状態に一体的に形成してある。 In the first embodiment, the straight cane has been described. However, in the present invention, for example, as shown in FIGS. 6 and 7, a folding cane may be used.
That is, in the third embodiment, as shown in FIG. 6A, as in the first embodiment, the shaft portion (4), the grip portion (1) provided at the upper end of the shaft portion (4), It has a stone thrust (6) fixed to the lower end of the shaft portion (4). However, in the third embodiment, unlike the first embodiment, the shaft portion (4) is composed of a plurality of, for example, five shaft portions (14) that can be connected to and separated from each other. A cylindrical joint cover (5) is provided at the connecting portion. And said grip part (1) is integrally formed in the extended state at the upper end of the uppermost shaft part (14).
なお上記のゴム紐(8)は、シャフト部分(14)同士を容易に分離・連結できる弾力性や伸縮性を備えておればよく、材質や太さは特に限定されず、公知のものを使用することができる。 As shown in FIGS. 8 and 9, the adjacent shaft portion (14) has an inner pipe (9) fixed to the first connecting end (21) of one shaft portion (14) as a small diameter portion. A rubber string (8) connecting the shaft portions (14) to each other is inserted into the inner pipe (9). The protruding length of the inner pipe (9) protruded outward from the first connecting end (21) is not limited to a specific dimension, and the length that allows the shaft portions (14) to be securely connected to each other is not limited. For example, it is set to about 30 to 50 mm.
The rubber cord (8) may be elastic or stretchable so that the shaft portions (14) can be easily separated and connected to each other. The material and thickness are not particularly limited, and a known one is used. can do.
高強度有機繊維として、ポリパラフェニレンテレフタルアミド繊維であるケブラーK-29 1670dtx(東レ・デュポン株式会社製)を用いた。この有機繊維により、目付け73g/m2としたUD(一方向性繊維)シートを作成し、これに、樹脂含有比率が67:33となるようにエポキシ樹脂をホットメルト方式にて含浸させて、目付け110g/m2の高強度有機繊維プリプレグを得た。
また炭素繊維プリプレグとして、トレカ(登録商標、東レ株式会社製)のプリプレグ(品種:9052S-17と3252S-05)を用いた。このプリプレグは、目付け220g/m2のUDシートに、樹脂含有比率が67:33となるようにエポキシ樹脂を含浸させて、目付け330g/m2の炭素繊維プリプレグとしてある。
またガラス繊維として、目付け100g/m2のUDシートであるガラスクロスWPA-240D(日東紡績株式会社製)を用い、このガラスクロスに、樹脂含有比率が67:33となるようにエポキシ樹脂をホットメルト方式にて含浸させて、目付け150g/m2のガラス繊維プリプレグを得た。 [Example 1]
As the high-strength organic fiber, Kevlar K-29 1670 dtx (manufactured by Toray DuPont Co., Ltd.), which is a polyparaphenylene terephthalamide fiber, was used. Using this organic fiber, a UD (unidirectional fiber) sheet having a basis weight of 73 g / m 2 was prepared, and this was impregnated with an epoxy resin by a hot melt method so that the resin content ratio was 67:33, A high-strength organic fiber prepreg having a basis weight of 110 g / m 2 was obtained.
Further, as a carbon fiber prepreg, trading card (registered trademark, manufactured by Toray Industries, Inc.) prepreg (variety: 9052S-17 and 3252S-05) was used. This prepreg is a carbon fiber prepreg having a basis weight of 330 g / m 2 by impregnating a UD sheet having a basis weight of 220 g / m 2 with an epoxy resin so that the resin content is 67:33.
In addition, glass cloth WPA-240D (manufactured by Nitto Boseki Co., Ltd.), which is a UD sheet with a basis weight of 100 g / m 2 , is used as the glass fiber, and an epoxy resin is hot in this glass cloth so that the resin content is 67:33 A glass fiber prepreg having a basis weight of 150 g / m 2 was obtained by impregnation by a melt method.
実施例1の高強度有機繊維プリプレグとガラス繊維プリプレグに替えて、いずれも上記の炭素繊維プリプレグを用い、その他は実施例1と同様に処理して、比較例1の筒体を得た。 [Comparative Example 1]
In place of the high-strength organic fiber prepreg and glass fiber prepreg of Example 1, the above carbon fiber prepreg was used, and the others were processed in the same manner as in Example 1 to obtain a cylinder of Comparative Example 1.
上記の実施例1の炭素繊維プリプレグとガラス繊維プリプレグに替えて、いずれも上記の高強度有機繊維プリプレグを用い、その他は実施例1と同様に処理して、比較例2の筒体を得た。 [Comparative Example 2]
In place of the carbon fiber prepreg and the glass fiber prepreg of Example 1, both of the above high-strength organic fiber prepregs were used, and the others were processed in the same manner as in Example 1 to obtain a cylindrical body of Comparative Example 2. .
次にこれらの筒体について、剛性(撓み性)、耐衝撃性、安全性、現場補修性の各特性値を次の測定方法により測定した。 Each of the obtained cylindrical bodies had an outer diameter of 12 mm, and the cross-sectional area ratio between the hollow portion and the outer shell portion was 67:33.
Next, for these cylinders, characteristic values of rigidity (flexibility), impact resistance, safety, and on-site repairability were measured by the following measurement methods.
上記の実施例と比較例の各筒体を、支点間距離780mmで支持し、支点間の中央に3kgの荷重が付いたフックを掛けて10秒間放置したときの、その荷重により筒体が撓んだ寸法(mm)を測定した。 (Rigidity (flexibility))
When the cylinders of the above-mentioned examples and comparative examples are supported at a distance of 780 mm between the fulcrums and a hook with a load of 3 kg is hung at the center between the fulcrums and left for 10 seconds, the cylinders are bent by the load. The measured dimensions (mm) were measured.
各実施例および比較例の杖を30cmにカットしてサンプルとし、JIS K 7055:1995(ガラス繊維強化プラスチックの曲げ試験方法)に記載の3点曲げ落錘試験法に準じて、落錘型衝撃試験機(商品名:Dynatup (登録商標) 9210、インストロン社製)を用いて、カットしたサンプルを支点間距離105mmで固定し、直径22mmの抑え具(圧子)を110Jの条件で衝撃力を与え、サンプルの破断状態と、吸収エネルギー等を測定した。
この破断状態の評価基準は次の通りである。
○:破断なし
△:部分的に破断した。
×:容易に完全に破断した。 (Impact resistance)
The cane of each example and comparative example was cut to 30 cm to give a sample, and a drop weight impact was applied according to the three-point bending drop weight test method described in JIS K 7055: 1995 (bending test method for glass fiber reinforced plastic). Using a testing machine (trade name: Dynatup (registered trademark) 9210, manufactured by Instron), the cut sample is fixed at a distance between fulcrums of 105 mm, and a pressing tool (indenter) with a diameter of 22 mm is applied under the condition of 110 J. The rupture state of the sample and the absorbed energy were measured.
The evaluation criteria for this rupture state are as follows.
○: No break Δ: Partially broken
X: It broke easily and completely.
耐衝撃性試験後に、各筒体の衝撃付与位置での、トゲ状に突出した繊維の有無により、安全性を評価した。
この安全性の評価基準は次の通りである。
○:トゲ状に突出した繊維がなく、十分に安全である。
△:トゲ状に突出した繊維がわずかにある。
×:トゲ状に突出した繊維があり、手に刺さる虞がある。 〔safety〕
After the impact resistance test, safety was evaluated based on the presence or absence of fibers protruding in a thorn shape at the impact application position of each cylinder.
The safety evaluation criteria are as follows.
○: There is no fiber protruding in a thorn shape, and it is sufficiently safe.
Δ: Slightly protruding fibers are present.
X: There are fibers protruding like thorns, and there is a risk of sticking into hands.
耐衝撃性試験後に、破断または損傷した部位を、日本点字図書館の用具事業課の国産白杖の緊急用補修キット(商品名:やつはしくん;商品番号:39032)を用いて補修し、筒体が杖のシャフト部として再利用が可能か否かで、現場補修性を評価した。この緊急補修キット(26)は、例えば図12に示すように、半円筒状の保持板(13)を一対備えている。破断したシャフト部(4)をこの緊急補修キット(26)で補修する際は、各保持板(13)の裏面に貼り付けてある両面テープ(12)の剥離テープを剥がし、シャフト部(4)の破断個所を真ん中にして挟むように両保持板(13)を仮止めし、付属の反射テープ(15)で保持板(13)の両端を巻いて筒体に確りと固定して、図13に示される状態にされる。
この現場補修性の評価基準は次の通りである。
○:衝突後に現場で簡易補修することで、杖として再利用できた。
×:衝突後に現場で簡易補修することができず、杖として再利用できなかった。 [On-site repairability]
After the impact resistance test, the broken or damaged part was repaired using a Japanese white braille emergency repair kit (product name: Yatsuha-kun; product number: 39032) in the Braille Library's Equipment Business Division. Field repairability was evaluated based on whether or not the body could be reused as a shaft portion of a cane. The emergency repair kit (26) includes a pair of semi-cylindrical holding plates (13) as shown in FIG. 12, for example. When repairing the broken shaft part (4) with this emergency repair kit (26), the peeling tape of the double-sided tape (12) attached to the back surface of each holding plate (13) is peeled off, and the shaft part (4) Both holding plates (13) are temporarily fixed so as to be sandwiched with the fractured portion of Fig. 13 in the middle, and both ends of the holding plate (13) are wound around with the attached reflective tape (15) and securely fixed to the cylindrical body. It will be in the state shown in.
The evaluation criteria for this field repairability are as follows.
○: It was possible to reuse it as a cane by simply repairing it after the collision.
X: After the collision, it could not be repaired on site and could not be reused as a cane.
この測定結果から明らかなように、炭素繊維強化樹脂層のみで形成した比較例1では、剛性が高いものの、筒体の軸直交方向の力に対する耐衝撃性は十分ではなく、衝撃時に破断して繊維がトゲ状に突出し、安全性や現場補修性が優れていなかった。また、高強度有機繊維強化樹脂層のみで形成した比較例2では、耐衝撃性に優れており、衝撃時に破断せず、安全性や現場補修性に優れるものの、軸直交方向から荷重を加えた際の撓み量が大きく、剛性が低かった。
これに対し本発明の実施例1では、剛性が比較例2よりも優れており、しかも衝撃を与えた場合にやや折れ曲がるのみで、筒体の軸直交方向からの力に対する耐衝撃性が優れており、衝撃を受けた部位は繊維がトゲ状に突出することがなく安全性に優れ、破断しないので現場での補修補修性においても優れていることが確認された。 The measurement results of the above characteristic values are as shown in the measurement result comparison table 1 shown in FIG.
As is apparent from this measurement result, in Comparative Example 1 formed with only the carbon fiber reinforced resin layer, although the rigidity is high, the impact resistance against the force in the direction perpendicular to the axis of the cylinder is not sufficient, and it breaks at the time of impact. The fibers protruded in a thorn shape, and safety and field repairability were not excellent. Moreover, in Comparative Example 2 formed with only the high-strength organic fiber reinforced resin layer, although it was excellent in impact resistance, it did not break at the time of impact, and was excellent in safety and field repairability, a load was applied from the direction perpendicular to the axis. The amount of bending at the time was large and the rigidity was low.
On the other hand, in Example 1 of the present invention, the rigidity is superior to that of Comparative Example 2, and when the impact is applied, it is only slightly bent, and the impact resistance against the force from the axis orthogonal direction of the cylinder is excellent. In addition, it was confirmed that the part subjected to the impact is excellent in safety because the fiber does not protrude like a splinter, and is excellent in repairability on site because it does not break.
幅25mm、長さ300mmの布ヤスリ(粒度#240、株式会社ノリタケコーテッドアブレーシブ製)を用いる。図15に示すように、シャフト部(4)を水平に保った状態とし、そのシャフト部(4)の軸方向に対し90度の方向に上記の布ヤスリ(36)を、水平状態に配置されたシャフト部(4)の上面から垂直面までの四半部(90度部分)と接するように、水平方向と垂直方向とに亘って配置する。この布ヤスリ(36)の垂直部分の下端に330gの荷重(37)をつりさげ、この状態で布ヤスリ(36)を、1往復2秒の速度でシャフトに対し200mm移動させ、シャフト部(4)の表面を摩耗した。 [Abrasion resistance of outer surface]
A cloth file having a width of 25 mm and a length of 300 mm (grain size # 240, manufactured by Noritake Coated Abrasive Co., Ltd.) is used. As shown in FIG. 15, the shaft part (4) is kept horizontal, and the cloth file (36) is placed in a horizontal state in a direction of 90 degrees with respect to the axial direction of the shaft part (4). Further, the shaft portion (4) is disposed across the horizontal direction and the vertical direction so as to be in contact with a quarter portion (90-degree portion) from the upper surface to the vertical surface. A load (37) of 330 g is suspended at the lower end of the vertical portion of the cloth file (36). ) Worn surface.
路面の凹凸や平滑性などの状態を、使用者に杖を通して伝達できるかを測定した。使用者が路面を探ることにより、対象の路面の相違を検知できた場合は「良好」とし、検知できない場合は「劣る」とした。 [Information transmission]
It was measured whether road surface unevenness and smoothness could be transmitted to the user through a cane. When the user could detect the difference in the target road surface by searching the road surface, it was judged as “good”, and when the user could not detect it, it was judged as “poor”.
杖を振り回したり、路面等を突いたりしたときの、手や手頸への負担の大きさや、石突きが路面と接したときの音の大きさを測定した。手や手頸への負担が少なく、音が過剰に大きくない場合を「良好」とし、上記の負担や音が大きい場合を「劣る」とした。 [Operability]
The magnitude of the burden on the hands and wrists when swinging the cane or struck the road surface, and the loudness of the sound when the stone thruster touches the road surface were measured. The case where the burden on the hand and the wrist was small and the sound was not excessively loud was determined as “good”, and the case where the above-mentioned load and sound were large was determined as “poor”.
階段の滑り止め具や、路面の溝部などに突っかかったり、引っ掛かったりしないかを測定した。突っかかったり引っ掛かったりしない場合を「良好」とし、突っかかったり引っ掛かったりする場合を「劣る」とした。 [Non-impact]
Measurements were made to determine whether it would stick to or get caught on stair slippers or road grooves. The case where it did not get stuck or caught was judged as “good”, and the case where it stuck or caught was judged as “poor”.
比較対象に用いた従来の石突きはいずれもポリアミド樹脂(PA6)製であり、スタンダードタイプを比較例3とし、ティアドロップタイプを比較例4とし、パームチップタイプを比較例5とした。なお、比較例5のパームチップタイプは、例えば国際公開第07/058180号パンフレットに記載のように、石突きの接地部とシャフト部との間に弾性部材を配置したものであり、具体的には、ポリアミド樹脂製接地部とシャフト部との間に弾性部材としてクロロプレンゴムを配置したものを用いた。 The measurement results of each of the above-mentioned use characteristics while comparing with the conventional cane stab are shown in the measurement result comparison table 2 of FIG.
The conventional stone bumps used for comparison were all made of polyamide resin (PA6), the standard type was Comparative Example 3, the teardrop type was Comparative Example 4, and the palm chip type was Comparative Example 5. In addition, the palm chip type of Comparative Example 5 is an arrangement in which an elastic member is disposed between the ground contact portion of the stone bump and the shaft portion, as described in, for example, WO 07/058180 pamphlet. Used the thing which has arrange | positioned chloroprene rubber as an elastic member between the grounding part made from a polyamide resin, and a shaft part.
即ち、上記の比較例3~5では、いずれも、例えばクレヨンで字を書くときのように、石突きが路面へ粘着するような感触があり、路面の種類を容易に検出することができなかった。これに対し本発明の実施例2では、例えば鉛筆で字を書くときのように、石突きの路面との接触が軽く、微小に飛び跳ねる接触があり、その感触は路面の種類によって明確に異なった。 As is apparent from the results of the above measurements, in Comparative Examples 3 to 5 described above, none of the road surface types could be easily identified and the information transmission was poor. In Example 2, the above three types of road surfaces could be easily identified, and extremely excellent information transmission performance could be exhibited.
That is, in each of Comparative Examples 3 to 5 described above, there is a feeling that the stone bump sticks to the road surface, for example, when writing characters with crayons, and the type of road surface cannot be easily detected. It was. On the other hand, in Example 2 of the present invention, for example, when writing a character with a pencil, the contact with the road surface of the stone bump is light and there is a contact that jumps slightly, and the feeling is clearly different depending on the type of the road surface. .
即ち、比較例4では、操作時に使用者の手や手頸に加わる負担が大きく、操作性に劣った。比較例3や比較例5では、この比較例4に比べて上記の負担が小さく、操作性が良好であった。これに対し本発明の実施例2では、探査する対象物である路面に対し、石突きが良好に反応するため、杖を過剰に振り回したり突いたりする必要性が低減され、使用者の手や手頸に加わる負担を、比較例3や比較例5よりも一層良好に軽減することができ、また路面を叩いたときの音が過剰に大きくなることがなく、きわめて良好な操作性を発揮することができた。 Further, Example 2 of the present invention was able to demonstrate operability superior to Comparative Example 3 and Comparative Example 5 as well as Comparative Example 4.
That is, in the comparative example 4, the burden added to a user's hand and neck at the time of operation was large, and it was inferior to operativity. In the comparative example 3 and the comparative example 5, compared with this comparative example 4, the said burden was small and operativity was favorable. On the other hand, in the second embodiment of the present invention, since the stone strikes react well with the road surface that is the object to be explored, the necessity of excessively swinging or pushing the cane is reduced, and the user's hand or The burden applied to the wrist can be reduced more satisfactorily than in Comparative Example 3 and Comparative Example 5, and the sound when hitting the road surface is not excessively loud, and extremely good operability is exhibited. I was able to.
・試験片:リング(中空円筒形)
・相手材:SUS304リング(中空円筒形)、表面粗さ調整は#1000研磨紙仕上げ(0.1μmRa>)。
・測定項目:摩耗質量
・測定条件
滑り速度:500mm/秒
摩擦面積:2cm2
試験加重:100N
試験時間:100分(3km)
測定数 :n=1
・試験室環境:温度23±2℃、湿度50±10%RH
・測定装置:回転動型摩擦摩耗試験機IIIT-2000-5000N型(高千穂精機株式会社製) The test method was based on the method A described in JIS K 7218: 1986 (plastic sliding wear test method), and was performed under the following conditions.
・ Test specimen: Ring (hollow cylindrical shape)
-Partner material: SUS304 ring (hollow cylindrical shape), surface roughness adjustment is # 1000 polishing paper finish (0.1 μm Ra>).
Measurement item: Wear mass Measurement condition Sliding speed: 500 mm / sec Friction area: 2 cm 2
Test weight: 100N
Test time: 100 minutes (3 km)
Number of measurements: n = 1
・ Test room environment:
・ Measuring device: Rotational dynamic friction and wear tester IIIT-2000-5000N (Takachiho Seiki Co., Ltd.)
この測定結果から明らかなように、ポリプロピレン樹脂で成形した比較例6は早期に摩耗してしまい、ポリアミド樹脂で成形した比較例7は摩耗質量が多いうえ、摩擦により高温となって、途中で樹脂が溶融してしまった。これに対し本発明の実施例3では、高強度有機繊維強化樹脂を用いてあるので、試験時間の最後まで定常摩耗が維持され、その摩耗質量も僅かであった。これにより、本発明の高強度有機繊維強化樹脂を用いて形成した石突きは、優れた耐摩耗性を備えることが確認された。 The test results are as shown in the measurement result comparison table 3 shown in FIG.
As is apparent from this measurement result, Comparative Example 6 molded with polypropylene resin wears out early, and Comparative Example 7 molded with polyamide resin has a large wear mass and becomes high temperature due to friction. Has melted. On the other hand, in Example 3 of the present invention, since high-strength organic fiber reinforced resin was used, steady wear was maintained until the end of the test time, and the wear mass was also slight. Thereby, it was confirmed that the stone bump formed using the high-strength organic fiber reinforced resin of the present invention has excellent wear resistance.
また上記の第3実施形態の折り畳み式杖では、シャフト部分の全ての連結部分がそれぞれジョイントカバーを備える場合について説明した。しかし本発明では、任意の連結部分についてジョイントカバーを省略することができ、例えば、折れやすい最下部の連結部分にジョイントカバーを設け、他の連結部分はジョイントカバーを省略してもよい。
また上記の各実施形態ではいずれも反射テープや表示テープで表示層を形成した。しかし本発明は他の表示層を用いたものであってもよく、あるいはこれらの表示層を省略したものであってもよい。
さらに上記の実施形態では高強度有機繊維としてポリパラフェニレンテレフタルアミド繊維を用いる場合について説明したが、本発明では他の種類の高強度有機繊維を用いたものであってもよいことは、いうまでもない。 For example, in the first embodiment, the shaft portion and the grip portion are integrally formed. However, in the present invention, they may be formed separately from each other and fixed to each other.
In the foldable cane of the third embodiment, the case where all the connecting portions of the shaft portion each include a joint cover has been described. However, in the present invention, the joint cover can be omitted for an arbitrary connecting portion. For example, the joint cover may be provided in the lowermost connecting portion which is easily broken, and the joint cover may be omitted for the other connecting portions.
In each of the above embodiments, the display layer is formed of a reflective tape or a display tape. However, the present invention may use other display layers, or may omit these display layers.
Furthermore, in the above embodiment, the case where polyparaphenylene terephthalamide fiber is used as the high-strength organic fiber has been described, but it goes without saying that another type of high-strength organic fiber may be used in the present invention. Nor.
4…シャフト部
5…ジョイントカバー
6…石突き
7…杖
9…小径部(インナーパイプ)
14…シャフト部分
17…中空部
18…外殻部
19…グリップ本体
20…滑止め部材
21…第1連結端部
22…第2連結端部
31…高強度有機繊維強化樹脂層
31a…第1高強度有機繊維強化樹脂層
31b…第2高強度有機繊維強化樹脂層
32…炭素繊維強化樹脂層
33…ガラス繊維強化樹脂層
33a…第1ガラス繊維強化樹脂層
33b…第2ガラス繊維強化樹脂層
34…表示層
35…耐摩耗性透明樹脂層 DESCRIPTION OF
14 ...
Claims (27)
- シャフト部(4)とこのシャフト部(4)の上端にグリップ部(1)とを有する杖であって、
上記のシャフト部(4)は高強度有機繊維強化樹脂層(31)と炭素繊維強化樹脂層(32)とを備えており、
上記の炭素繊維強化樹脂層(32)は、少なくともその外周面に上記の高強度有機繊維強化樹脂層(31)が一体的に積層してあることを特徴とする、杖。 A cane having a shaft portion (4) and a grip portion (1) at the upper end of the shaft portion (4),
The shaft portion (4) includes a high-strength organic fiber reinforced resin layer (31) and a carbon fiber reinforced resin layer (32).
The cane characterized in that the carbon fiber reinforced resin layer (32) is formed by integrally laminating the high strength organic fiber reinforced resin layer (31) on at least an outer peripheral surface thereof. - 上記の炭素繊維強化樹脂層(32)は、その外周面と内周面とにそれぞれ上記の高強度有機繊維強化樹脂層(31)が一体的に積層してある、請求項1に記載の杖。 The cane according to claim 1, wherein the carbon fiber reinforced resin layer (32) is formed by integrally laminating the high-strength organic fiber reinforced resin layer (31) on an outer peripheral surface and an inner peripheral surface, respectively. .
- 上記の高強度有機繊維がパラ系アラミド繊維である、請求項1または請求項2に記載の杖。 The cane according to claim 1 or 2, wherein the high-strength organic fiber is a para-aramid fiber.
- 上記のシャフト部(4)は、最も内側の高強度有機繊維強化樹脂層(31a)のさらに内側にガラス繊維強化樹脂層(33a)を備える、請求項1から3のいずれかに記載の杖。 The cane according to any one of claims 1 to 3, wherein the shaft portion (4) includes a glass fiber reinforced resin layer (33a) further inside the innermost high-strength organic fiber reinforced resin layer (31a).
- 上記のシャフト部(4)は、最も外側の高強度有機繊維強化樹脂層(31b)のさらに外側にガラス繊維強化樹脂層(33b)を備える、請求項1から4のいずれかに記載の杖。 The cane according to any one of claims 1 to 4, wherein the shaft portion (4) includes a glass fiber reinforced resin layer (33b) on the outer side of the outermost high-strength organic fiber reinforced resin layer (31b).
- 上記のシャフト部(4)は、最も外側の高強度有機繊維強化樹脂層(31b)のさらに外側に表示層(34)を備える、請求項1から5のいずれかに記載の杖。 The cane according to any one of claims 1 to 5, wherein the shaft portion (4) includes a display layer (34) further outside the outermost high-strength organic fiber reinforced resin layer (31b).
- 上記の表示層(34)の外側に筒状のガラス繊維強化樹脂層(33)を備える、請求項6に記載の杖。 The cane according to claim 6, further comprising a cylindrical glass fiber reinforced resin layer (33) outside the display layer (34).
- 上記の表示層(34)の外側に耐摩耗性透明樹脂層(35)を備える、請求項6に記載の杖。 The cane according to claim 6, further comprising an abrasion-resistant transparent resin layer (35) outside the display layer (34).
- 上記のシャフト部(4)が中空であり、このシャフト部(4)の軸直交断面において、中空部(17)とその周囲の外殻部(18)との断面積比率が85:15~56:44である、請求項1から8のいずれかに記載の杖。 The shaft portion (4) is hollow, and the cross-sectional area ratio between the hollow portion (17) and the surrounding outer shell portion (18) is 85:15 to 56 in the cross section perpendicular to the axis of the shaft portion (4). The wand according to any one of claims 1 to 8, which is 44.
- 上記のシャフト部(4)は、互いに連結・分離可能な複数のシャフト部分(14)からなり、互いに隣接するシャフト部分(14)は、一方のシャフト部分(14)の第1連結端部(21)に、これに対向する他方のシャフト部(4)の第2連結端部(22)内へ挿抜可能な小径部(9)が設けてある、請求項1から9のいずれかに記載の杖。 The shaft portion (4) includes a plurality of shaft portions (14) that can be connected to and separated from each other, and the shaft portions (14) adjacent to each other are the first connection end portions (21) of one shaft portion (14). The cane according to any one of claims 1 to 9, wherein a small-diameter portion (9) that can be inserted into and removed from the second connecting end portion (22) of the other shaft portion (4) opposite to the shaft portion (4) is provided. .
- 上記の小径部(9)が高強度有機繊維強化樹脂層を用いて形成してある、請求項10に記載の杖。 The cane according to claim 10, wherein the small-diameter portion (9) is formed using a high-strength organic fiber reinforced resin layer.
- 上記の互いに連結された第1連結端部(21)と第2連結端部(22)とを覆う筒状のジョイントカバー(5)を備え、このジョイントカバー(5)は、一端を上記の第1連結端部(21)と第2連結端部(22)とのいずれか一方に外嵌固定するとともに、他端の内部へ他方の連結端部を挿抜可能に構成してある、請求項10または請求項11に記載の杖。 A cylindrical joint cover (5) is provided to cover the first connection end (21) and the second connection end (22) connected to each other, and the joint cover (5) has one end at the first end. The first connecting end (21) and the second connecting end (22) are externally fitted and fixed, and the other connecting end can be inserted into and removed from the other end. Or the cane of Claim 11.
- 上記のグリップ部(1)が、上記のシャフト部(4)の上端から延設した中空構造からなるグリップ本体(19)を有し、このグリップ本体(19)の軸直交断面が上記のシャフト部(4)の軸直交断面よりも大形である、請求項1から12のいずれかに記載の杖。 The grip part (1) has a grip body (19) having a hollow structure extending from the upper end of the shaft part (4), and the axial cross section of the grip body (19) is the shaft part. The cane according to any one of claims 1 to 12, wherein the cane is larger than an axially orthogonal cross section of (4).
- 上記のグリップ部(1)が高強度繊維強化樹脂を用いて形成してある、請求項1から13のいずれかに記載の杖。 The cane according to any one of claims 1 to 13, wherein the grip portion (1) is formed using a high-strength fiber reinforced resin.
- 上記のグリップ部(1)が、外表面の少なくとも一部に滑止め部材(20)を備える、請求項1から14のいずれかに記載の杖。 The cane according to any one of claims 1 to 14, wherein the grip portion (1) includes a non-slip member (20) on at least a part of the outer surface.
- シャフト部(4)とこのシャフト部(4)の下端に付設した石突き(6)とを有する杖であって、
上記の石突き(6)は、合成樹脂材料中に高強度有機繊維からなる短繊維を分散させた高強度有機繊維強化樹脂を用いて形成してあることを特徴とする、杖。 A cane having a shaft portion (4) and a stone thruster (6) attached to the lower end of the shaft portion (4),
The above stone bump (6) is formed of a high-strength organic fiber reinforced resin in which short fibers made of high-strength organic fibers are dispersed in a synthetic resin material. - 上記の高強度有機繊維強化樹脂に占める高強度有機繊維が、10~60質量%である、請求項16に記載の杖。 The cane according to claim 16, wherein the high-strength organic fiber in the high-strength organic fiber-reinforced resin is 10 to 60% by mass.
- 上記の合成樹脂材料中に分散される短繊維は、フィラメントの繊度が1.1~2.3デシテックスであり、繊維長が2~8mmである、請求項16または請求項17に記載の杖。 The cane according to claim 16 or 17, wherein the short fibers dispersed in the synthetic resin material have a filament fineness of 1.1 to 2.3 dtex and a fiber length of 2 to 8 mm.
- 上記の石突き(6)を有する杖が、請求項1から15のいずれかに記載の杖である、請求項16から18のいずれかに記載の杖。 The cane according to any one of claims 16 to 18, wherein the cane having the stone bump (6) is the cane according to any one of claims 1 to 15.
- 上記の杖が白杖である、請求項1から19のいずれかに記載の杖。 The cane according to any one of claims 1 to 19, wherein the cane is a white cane.
- 筒状の高強度有機繊維強化樹脂層(31)と炭素繊維強化樹脂層(32)とを備えており、
上記の炭素繊維強化樹脂層(32)は、少なくともその外周面に上記の高強度有機繊維強化樹脂層(31)が一体的に積層してあることを特徴とする、筒体。 It has a cylindrical high-strength organic fiber reinforced resin layer (31) and a carbon fiber reinforced resin layer (32),
The cylindrical body characterized in that the high-strength organic fiber-reinforced resin layer (31) is integrally laminated on at least the outer peripheral surface of the carbon fiber-reinforced resin layer (32). - 上記の炭素繊維強化樹脂層(32)は、その外周面と内周面とにそれぞれ上記の高強度有機繊維強化樹脂層(31)が一体的に積層してある、請求項21に記載の筒体。 The cylinder according to claim 21, wherein the carbon fiber reinforced resin layer (32) is formed by integrally laminating the high-strength organic fiber reinforced resin layer (31) on an outer peripheral surface and an inner peripheral surface, respectively. body.
- 上記の高強度有機繊維が、パラ系アラミド繊維であることを特徴とする請求項21または請求項22に記載の筒体。 The cylinder according to claim 21 or 22, wherein the high-strength organic fiber is a para-aramid fiber.
- 上記の最も内側の高強度有機繊維強化樹脂層(31a)のさらに内側にガラス繊維強化樹脂層(33a)を備える、請求項21から23のいずれかに記載の筒体。 The cylinder according to any one of claims 21 to 23, further comprising a glass fiber reinforced resin layer (33a) on the inner side of the innermost high-strength organic fiber reinforced resin layer (31a).
- 上記の最も外側の高強度有機繊維強化樹脂層(31b)のさらに外側に筒状のガラス繊維強化樹脂層(33b)を備える、請求項21から24のいずれかに記載の筒体。 The cylinder according to any one of claims 21 to 24, further comprising a cylindrical glass fiber reinforced resin layer (33b) on the outer side of the outermost high-strength organic fiber reinforced resin layer (31b).
- 軸直交断面において、中空部(17)とその周囲の外殻部(18)との断面積比率が85:15~56:44である、請求項21から25のいずれかに記載の筒体。 The cylindrical body according to any one of claims 21 to 25, wherein a cross-sectional area ratio between the hollow portion (17) and the surrounding outer shell portion (18) is 85:15 to 56:44 in the cross section orthogonal to the axis.
- 請求項1から20のいずれかに記載の杖の、シャフト部用筒体である、請求項21から26のいずれかに記載の筒体。 The cylinder according to any one of claims 21 to 26, which is a cylinder for a shaft portion of the cane according to any one of claims 1 to 20.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020137023312A KR20140047583A (en) | 2011-02-09 | 2011-10-20 | Cane and tubular body |
CN2011800672639A CN103384482A (en) | 2011-02-09 | 2011-10-20 | Cane and tubular body |
CA2825701A CA2825701A1 (en) | 2011-02-09 | 2011-10-20 | Cane and cylindrical body |
US13/984,001 US20140041702A1 (en) | 2011-02-09 | 2011-10-20 | Cane and Cylindrical Body |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011-026414 | 2011-02-09 | ||
JP2011026414A JP6037599B2 (en) | 2011-02-09 | 2011-02-09 | Cane |
JP2011-213921 | 2011-09-29 | ||
JP2011213921A JP2013070917A (en) | 2011-09-29 | 2011-09-29 | Walking stick ferrule and walking stick |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012108081A1 true WO2012108081A1 (en) | 2012-08-16 |
Family
ID=46638311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/074183 WO2012108081A1 (en) | 2011-02-09 | 2011-10-20 | Cane and tubular body |
Country Status (6)
Country | Link |
---|---|
US (1) | US20140041702A1 (en) |
KR (1) | KR20140047583A (en) |
CN (1) | CN103384482A (en) |
CA (1) | CA2825701A1 (en) |
TW (1) | TW201233357A (en) |
WO (1) | WO2012108081A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113954386A (en) * | 2021-10-14 | 2022-01-21 | 亨弗劳恩(江苏)复合材料研发有限公司 | Composite material part and preparation device and method thereof |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI577367B (en) * | 2015-12-17 | 2017-04-11 | Gigantex Composite Technologiesco Ltd | Can be folded crutches |
CN106626430A (en) * | 2016-10-08 | 2017-05-10 | 深圳市天龙金属制品有限公司 | Light composite material handheld aid instrument and manufacture technology for same |
JP6437510B2 (en) * | 2016-12-19 | 2018-12-12 | 株式会社オートネットワーク技術研究所 | Wire harness |
CN106723754A (en) * | 2016-12-27 | 2017-05-31 | 陕西理工学院 | A kind of high tenacity outdoor mountain-climbing cane |
US20200206599A1 (en) * | 2018-12-26 | 2020-07-02 | Darin Mich'l | Folding and collapsible snowboard pole mounting system |
US10898406B2 (en) * | 2019-03-01 | 2021-01-26 | John McAteer | Collapsable safety cane with shock absorbing feature |
US11369507B2 (en) * | 2019-06-10 | 2022-06-28 | Debra Ann Frappier | Method and device for positioning a limb |
WO2021071391A1 (en) * | 2019-10-10 | 2021-04-15 | Владимир Львович ШЕРСТНЕВ | Sports pole |
CN111840010A (en) * | 2020-07-22 | 2020-10-30 | 温州医科大学 | Walking aid for training |
US20220338457A1 (en) * | 2020-10-11 | 2022-10-27 | Wei Zhang | Compact Fishing Apparatus |
US20220110303A1 (en) * | 2020-10-11 | 2022-04-14 | Wei Zhang | Apparatus and methods for expanding and collapsing a rod |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0691022A (en) * | 1992-09-10 | 1994-04-05 | Nikko Golf:Kk | Golf shaft |
JPH11155987A (en) * | 1997-11-28 | 1999-06-15 | Fujikura Rubber Ltd | Golf shaft made of fiber reinforced resin and manufacture thereof |
JP2001062014A (en) * | 1999-08-25 | 2001-03-13 | Mizuno Corp | Golf shaft |
JP2003250930A (en) * | 2002-03-04 | 2003-09-09 | Kizaki:Kk | Pole for walking aid |
JP2004141548A (en) * | 2002-10-28 | 2004-05-20 | Sumitomo Rubber Ind Ltd | Crutch |
JP2005218473A (en) * | 2004-02-03 | 2005-08-18 | Nitto Boseki Co Ltd | Stick |
JP2007029331A (en) * | 2005-07-26 | 2007-02-08 | Lapacho Japan:Kk | Shaft for golf club, its manufacturing method and golf club |
WO2007058180A1 (en) * | 2005-11-15 | 2007-05-24 | Take's Corporation | Ferrule of safety walking stick for blind |
JP2011255155A (en) * | 2010-05-13 | 2011-12-22 | Kosuge:Kk | Stick and joint cover for the same |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1967355A (en) * | 1931-04-08 | 1934-07-24 | Kyle P Edwards | Collapsible golf shaft |
US4864763A (en) * | 1986-10-24 | 1989-09-12 | Peikin Aaron J | Temperature measurement apparatus for use in recreational and sporting activities |
US5271640A (en) * | 1992-05-29 | 1993-12-21 | Patrick Potochick | Lighted ski pole |
US5495867A (en) * | 1993-11-16 | 1996-03-05 | Momentum Medical Corp. | Dual handled cane |
JP3235964B2 (en) * | 1996-06-14 | 2001-12-04 | ダイワ精工株式会社 | Tubular body |
JPH1024075A (en) * | 1996-07-12 | 1998-01-27 | Maeda:Kk | Bar-shaped cane |
JP2000238140A (en) * | 1999-02-17 | 2000-09-05 | Toray Ind Inc | Frp cylinder and its manufacture |
USH2138H1 (en) * | 2001-02-08 | 2006-01-03 | The United State Of America As Represented By The Secretary Of The Air Force | Custom fit carbon fiber composite forearm crutch |
CN2868352Y (en) * | 2005-11-09 | 2007-02-14 | 李明贤 | Improved structure of ball arm |
DE102007035754B4 (en) * | 2007-07-27 | 2009-04-30 | Paul Muhr | Collapsible stick |
US8006711B2 (en) * | 2009-01-05 | 2011-08-30 | Easton Technical Products, Inc. | Trekking pole clamp and methods |
CN201509741U (en) * | 2009-09-01 | 2010-06-23 | 高雄 | Novel walking stick |
CN101913270B (en) * | 2010-07-23 | 2012-11-21 | 哈尔滨工业大学 | Foldable-expandable shape memory supporting pipe and preparation method thereof |
-
2011
- 2011-10-20 US US13/984,001 patent/US20140041702A1/en not_active Abandoned
- 2011-10-20 CA CA2825701A patent/CA2825701A1/en not_active Abandoned
- 2011-10-20 CN CN2011800672639A patent/CN103384482A/en active Pending
- 2011-10-20 WO PCT/JP2011/074183 patent/WO2012108081A1/en active Application Filing
- 2011-10-20 KR KR1020137023312A patent/KR20140047583A/en not_active Application Discontinuation
- 2011-10-27 TW TW100139085A patent/TW201233357A/en unknown
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0691022A (en) * | 1992-09-10 | 1994-04-05 | Nikko Golf:Kk | Golf shaft |
JPH11155987A (en) * | 1997-11-28 | 1999-06-15 | Fujikura Rubber Ltd | Golf shaft made of fiber reinforced resin and manufacture thereof |
JP2001062014A (en) * | 1999-08-25 | 2001-03-13 | Mizuno Corp | Golf shaft |
JP2003250930A (en) * | 2002-03-04 | 2003-09-09 | Kizaki:Kk | Pole for walking aid |
JP2004141548A (en) * | 2002-10-28 | 2004-05-20 | Sumitomo Rubber Ind Ltd | Crutch |
JP2005218473A (en) * | 2004-02-03 | 2005-08-18 | Nitto Boseki Co Ltd | Stick |
JP2007029331A (en) * | 2005-07-26 | 2007-02-08 | Lapacho Japan:Kk | Shaft for golf club, its manufacturing method and golf club |
WO2007058180A1 (en) * | 2005-11-15 | 2007-05-24 | Take's Corporation | Ferrule of safety walking stick for blind |
JP2011255155A (en) * | 2010-05-13 | 2011-12-22 | Kosuge:Kk | Stick and joint cover for the same |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113954386A (en) * | 2021-10-14 | 2022-01-21 | 亨弗劳恩(江苏)复合材料研发有限公司 | Composite material part and preparation device and method thereof |
Also Published As
Publication number | Publication date |
---|---|
KR20140047583A (en) | 2014-04-22 |
TW201233357A (en) | 2012-08-16 |
CN103384482A (en) | 2013-11-06 |
CA2825701A1 (en) | 2012-08-16 |
US20140041702A1 (en) | 2014-02-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2012108081A1 (en) | Cane and tubular body | |
US7052419B2 (en) | Ball bat | |
US8579738B2 (en) | Racket with replaceable grip sleeve | |
CA2852586C (en) | Ball bat including a reinforced, low-durability region for deterring barrel alteration | |
US20070270252A1 (en) | Composite locking upright | |
US20160184678A1 (en) | Sports paddle and method of manufacture | |
US20090215559A1 (en) | Layered Composite Material Bat | |
US8113971B2 (en) | Multi-material composite locking upright | |
US10478688B1 (en) | Knob sleeve for a ball bat handle assembly | |
US9956464B2 (en) | Ball bat barrel with luminescent interior | |
KR20130039674A (en) | Golf club | |
US7972226B2 (en) | Multi-material composite locking upright | |
US6736733B2 (en) | On billiard cue | |
JP3189658U (en) | Cane | |
JP6037599B2 (en) | Cane | |
JP2011255155A (en) | Stick and joint cover for the same | |
US20150119162A1 (en) | Golf club | |
JP2007185253A (en) | Golf club shaft | |
JP2007307169A (en) | Golf club shaft | |
US20170203139A1 (en) | Jump rope assembly | |
US20030042726A1 (en) | Ski pole grip assembly having changeable hand grip | |
JP6547103B2 (en) | Folding white cane | |
JP2013070917A (en) | Walking stick ferrule and walking stick | |
JP2706313B2 (en) | stick | |
KR102585076B1 (en) | Shuttlecock and shuttlecock manufacturing method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11858019 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2825701 Country of ref document: CA |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20137023312 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13984001 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 11858019 Country of ref document: EP Kind code of ref document: A1 |