WO2012108081A1 - Cane and tubular body - Google Patents

Cane and tubular body Download PDF

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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
Application number
PCT/JP2011/074183
Other languages
French (fr)
Japanese (ja)
Inventor
山本 勉
小菅 一彦
明人 宮崎
幸輝 土井
Original Assignee
株式会社Kosuge
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2011026414A external-priority patent/JP6037599B2/en
Priority claimed from JP2011213921A external-priority patent/JP2013070917A/en
Application filed by 株式会社Kosuge filed Critical 株式会社Kosuge
Priority to KR1020137023312A priority Critical patent/KR20140047583A/en
Priority to CN2011800672639A priority patent/CN103384482A/en
Priority to CA2825701A priority patent/CA2825701A1/en
Priority to US13/984,001 priority patent/US20140041702A1/en
Publication of WO2012108081A1 publication Critical patent/WO2012108081A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45BWALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B9/00Details
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45BWALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B9/00Details
    • A45B9/02Handles or heads
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45BWALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B9/00Details
    • A45B9/04Ferrules or tips
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL 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
    • A61H3/00Appliances for aiding patients or disabled persons to walk about
    • A61H3/06Walking aids for blind persons
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06Fibrous reinforcements only
    • B29C70/10Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06Fibrous reinforcements only
    • B29C70/10Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/12Fibrous 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
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45BWALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B9/00Details
    • A45B2009/005Shafts
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45BWALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B9/00Details
    • A45B2009/005Shafts
    • A45B2009/007Shafts of adjustable length, e.g. telescopic shafts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL 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
    • A61H2201/00Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/01Constructive details
    • A61H2201/0161Size reducing arrangements when not in use, for stowing or transport
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/13Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1372Randomly 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.

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Abstract

The purpose of the present invention is to provide a cane which has sufficient strength with excellent impact resistance, excellent safety, excellent durability, excellent repairability and high rigidity, while being light in weight. The cane has a shaft portion (4) and a grip portion. The shaft portion (4) is provided with high-strength organic fiber-reinforced resin layers (31) and a carbon fiber-reinforced resin layer (32). The high-strength organic fiber-reinforced resin layers (31) are integrally laminated on the outer circumferential surface and the inner circumferential surface of the carbon fiber-reinforced resin layer (32). A glass fiber-reinforced resin layer (33a) is provided on the inside of the innermost high-strength organic fiber-reinforced resin layer (31a). A glass fiber-reinforced resin layer (33b) is provided on the outside of the outermost high-strength organic fiber-reinforced resin layer (31b).

Description

[規則37.2に基づきISAが決定した発明の名称] 杖及び筒体[Name of invention determined by ISA based on Rule 37.2] Staff and cylinder
 本発明は、視覚障害者用白杖などの杖に関し、さらに詳しくは、シャフト部の軸と直交方向からの力に対して耐衝撃性に優れた十分な強度を有し、安全性、耐久性、および補修性に優れるうえ、軽量であり、しかも高い剛性を備える杖に関する。 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.
 従来、杖は、ステッキやポールとも称され、視覚障害者や、高齢者等の足の不自由な人のみならず、健常者においてもトレッキングや軽登山等において使用されている。このような杖は、通常、棒状のシャフト部と、シャフト部の上端に形成され使用者にて把持されるグリップ部と、シャフト部の下端に付設された石突きとを備えている。これら従来の杖は、構造的に多少の違いはあるものの、何れにしろそれらの殆どが、木製やアルミニウム合金等の材質から成っている。 Conventionally, 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. Such 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. Although these conventional canes have some structural differences, most of them are made of a material such as wood or aluminum alloy.
 しかしながら、例えば視覚障害者が使用する、いわゆる白杖にあっては、長時間に亘って、先端を地面から僅かに持ち上げた状態で使用されることが多く、軽量化が望まれるのに対し、従来の木製の杖にあっては重量が重く、使用者の負担が大きい問題がある。さらにこの木製の杖は強度的にも問題があるうえ、環境の変化によって膨潤と乾燥が繰り返されて、シャフト部に反りが生じたり、表面の塗料が剥がれたりする問題がある。また前記アルミニウム合金製の杖においては、木製の杖に比して軽量化されてはいるものの、長時間の使用には依然として重く、しかも衝撃によって凹みや曲がりが生じ易い問題がある。 However, for example, 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. Furthermore, 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. In addition, although 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.
 一方、最近では、シャフト部を炭素繊維強化樹脂材料にて構成された杖が提案されている(例えば、特許文献1参照。)。このようなシャフト部を有する杖においては、前記従来の木製やアルミニウム合金製の杖に比べて軽量化されており、反りや腐食の問題が解消されている。 On the other hand, recently, a cane having a shaft portion made of a carbon fiber reinforced resin material has been proposed (see, for example, Patent Document 1). The cane having such a shaft portion is lighter than the conventional wooden or aluminum alloy cane, and the problems of warpage and corrosion are solved.
 しかしながら、前記特許文献1に記載の杖においても、従来の木製やアルミニウム合金製等の杖よりも軽量化されたとはいえ、特に視覚障害者等にとっては未だ長時間の使用に耐えうるほど軽量とはいえず、更なる軽量化が望まれている。 However, 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.
 また、上記したシャフト部を炭素繊維強化樹脂材料にて構成された杖は、炭素繊維が高引張強度・高弾性率であるので、例えばゴルフシャフトに適用されているように、曲げ弾性率が高いものとなる。しかしながら、炭素繊維は伸びが小さく、無機繊維であるが故のしなやかさが無いことから、シャフト部に対する横方向からの衝撃(曲げ衝撃)に対して折損し易いという欠点がある。そのため、ゴルフシャフトのように打撃としての機械的強度は十分であると考えられるが、これを用いた杖にあっては、歩行路面や障害物の状況を探るため頻繁にこれらを叩く作業が入るので、その叩いた時の衝撃力が石突きを通してシャフト部に伝搬し、上記の炭素繊維に微小クラック(亀裂)を発生させると推測される。従って、この杖に、人や自転車、その他障害物との接触等による外力が加わったとき、上記の亀裂が発生している部分で容易に破断するという問題がある。そのため、シャフト部の軸と直交する、横方向からの力が加わった場合にも、十分な強度(曲げ剛性)を有する杖の開発が望まれている。 Further, 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. Therefore, it is presumed that the impact force at the time of hitting propagates to the shaft portion through the stone bumps and causes micro cracks (cracks) in the carbon fiber. Therefore, when an external force is applied to the cane due to contact with a person, a bicycle, or other obstacles, there is a problem that the cane is easily broken at the cracked portion. Therefore, it is desired to develop a cane having sufficient strength (bending rigidity) even when a force from the lateral direction orthogonal to the axis of the shaft portion is applied.
 さらに、上記したシャフト部を炭素繊維強化樹脂材料にて構成された杖は、衝撃等を受けて破断するとその断面で激しく損傷し、その破断面から硬い繊維の端部がトゲのように突出する場合がある。その破断位置や損傷程度は、例えば視覚障害者にあっては手探りで確認しなければならないので、その破断面から露出している繊維が使用者の手に刺さる虞がある。このため上記の杖は、衝撃等を受けても容易に破断しないように肉厚を厚くするなどの対策が必要となるが、これでは杖の重量が大きくなる問題がある。また、破断個所が激しく損傷することから、現場での簡易補修が困難であるという補修性の問題もあり、現場において簡易補修可能な杖の開発が望まれていた。 Furthermore, 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. There is a case. For example, in the case of a visually impaired person, 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. For this reason, 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. In addition, since 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.
 上記の問題点を解消するため、例えばパラ系アラミド繊維とエポキシ樹脂などからなる高強度有機繊維強化樹脂を用いて上記のシャフト部を形成することが考えられる。しかしながら、上記のシャフト部を高強度有機繊維強化樹脂で形成した場合には、耐衝撃性に優れるものの、炭素繊維強化樹脂を用いた場合に比べて剛性が低下する。これを解消するため高強度有機繊維強化樹脂層を厚く形成して剛性を高めようとすると、シャフト部が太くなり、使用樹脂量が増えて杖の重量が過剰に大きくなる問題がある。 In order to solve the above problems, it is conceivable to form the shaft portion using a high-strength organic fiber reinforced resin made of, for example, para-aramid fiber and epoxy resin. However, when the shaft portion is formed of a high-strength organic fiber reinforced resin, although it is excellent in impact resistance, the rigidity is reduced as compared with the case where a carbon fiber reinforced resin is used. In order to solve this problem, if 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.
特開2005-218473号公報JP 2005-218473 A
 本発明の技術的課題は上記の問題点を解消し、シャフト部の軸と直交方向からの力に対して耐衝撃性に優れた十分な強度を有し、安全性、耐久性、および補修性に優れるうえ、軽量であり、しかも高い剛性を備える杖を提供することにある。 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.
 本発明は上記の課題を解決するために、例えば本発明の実施の形態を示す図1から図18に基づいて説明すると、次のように構成したものである。
 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.
 また本発明2は筒体であって、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。 Further, 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.
 上記の高強度有機繊維強化樹脂層を構成する有機繊維は、軽量で且つ高い引張強度を備えており、しかも炭素繊維等の無機繊維に比べて伸度があるので、例えば杖の先端で地面等を叩いても、その衝撃で有機繊維に微小クラックを発生させる虞がない。しかも上記のシャフト部や筒体が軸直交方向から衝撃(曲げ衝撃)を受けても、高強度有機繊維強化樹脂層は破断することなく座屈状に変形し、この衝撃が緩衝される。 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.
 上記のシャフト部や筒体が備える炭素繊維強化樹脂層は、炭素繊維が有機繊維に比べて弾性率が高いことから高い剛性を備えており、上記の高強度有機繊維強化樹脂層を過剰に厚く形成する必要がない。
 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.
 上記の炭素繊維強化樹脂層は、少なくとも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ればよいが、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が一体的に積層してあると、この炭素繊維強化樹脂層が内外の高強度有機繊維強化樹脂層で挟持された状態となり、これらの高強度有機繊維強化樹脂層で一層良好に保護されてシャフト部や筒体の破断が防止され、好ましい。 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. When the layers are integrally laminated, 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.
 上記の高強度有機繊維としては、引張強度など機械的強度などが高い有機繊維であればよく、特定の材質のものに限定されない。例えば、超高分子量ポリエチレン繊維、全芳香族ポリアミド繊維、全芳香族ポリエステル繊維、ヘテロ環高性能繊維、ポリアセタール繊維等が挙げられ、これらの繊維は単独で、または2種以上を任意の割合で混合して使用することができる。この高強度有機繊維として、具体的には例えばパラ系アラミド繊維が好ましく用いられ、中でもポリパラフェニレンテレフタルアミド繊維が特に好ましい。 The high-strength organic fiber is not limited to a specific material as long as it has high mechanical strength such as tensile strength. For example, 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. Can be used. Specifically, for example, a para-aramid fiber is preferably used as the high-strength organic fiber, and a polyparaphenylene terephthalamide fiber is particularly preferable.
 上記のシャフト部や筒体は、上記の炭素繊維強化樹脂層と高強度有機繊維強化樹脂層とを、1層ずつまたはいずれか一方または両方を複数層備えておればよく、これらの層のみで構成することも可能である。しかし上記のシャフト部が、最も内側の高強度有機繊維強化樹脂層のさらに内側に筒状のガラス繊維強化樹脂層を備えると、内面の耐摩耗性を良好にできるうえ、このシャフト部や筒体を所定長さ等に切断する際、切断端部の内面で有機繊維がほぐれることを防止でき、この切断端部の形状を良好にできて好ましい。 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.
 また上記のシャフト部が、最も外側の高強度有機繊維強化樹脂層のさらに外側に筒状のガラス繊維強化樹脂層を備えた場合も、外面の耐摩耗性を良好にできるうえ、このシャフト部や筒体を所定長さ等に切断する際、切断端部の外面で有機繊維がほぐれることを防止でき、この切断端部の形状を良好にできて好ましい。 In addition, when the above-mentioned shaft portion is provided with a cylindrical glass fiber reinforced resin layer on the outer side of the outermost high-strength organic fiber reinforced resin layer, 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.
 上記のシャフト部は、例えば視覚障害者が使用する際など、外部から杖の位置や機能を明示するため、あるいは装飾用などのために、最も外側の高強度有機繊維強化樹脂層のさらに外側に、表示層を備えると好ましい。この表示層としては、任意の色彩や模様の塗膜などであってもよいが、反射テープや赤色表示テープなどを用いると所定の色彩等に容易に設定できるうえ、補修等が容易であり、好ましい。 For example, when the visually impaired person uses the above-mentioned shaft portion, 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.
 上記の表示層は、シャフト部の外表面に露出していてもよいが、この表示層の外側に筒状のガラス繊維強化樹脂層や、耐摩耗性透明樹脂層を備えると、これらのガラス繊維強化樹脂層や耐摩耗性透明樹脂層で表示層が保護され、耐摩耗性や耐水性が向上し、色の変化やシャフト部からの脱落も防止できて好ましい。 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.
 上記のシャフト部は、特定の断面形状のものに限定されず、異形断面状であってもよいが、真円断面状であるとより好ましい。異形断面状としては、例えば、楕円状、中空状、X断面状、Y断面状、T断面状、L断面状、星型断面状、葉形断面状(例えば三つ葉形状、四葉形状、五葉形状等)、その他の多角断面状(例えば三角状、四角状、五角状、六角状等)等であってもよい。 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. Examples of 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.).
 上記のシャフト部は、本発明の効果を妨げない限り、中実であってもよいが、杖の軽量化の点から、中空に形成され、中空部とその周囲の外殻部とからなるものが好ましい。このシャフト部の軸直交断面において、上記の中空部と前記外殻部との断面積比率は、本発明の効果を妨げない限り特定の値に限定されないが、軸直交方向からの力に対して十分な強度を有し、かつ長時間の使用にも耐えられるほど軽量である点から、その断面積比率は85:15~56:44が好ましく、さらにより優れた安全性および補修性も有する点から80:20~60:40であるとより好ましく、75:25~62:38であると特に好ましい。シャフト部全体に対する中空部の断面積比率が56%未満であると、杖を十分に軽量化できないうえ、シャフト部が硬くなり過ぎて長時間使用すれば疲れやすくなり、好ましくない。一方、シャフト部全体に対する中空部の断面積比率が85%を超えると、杖が軽量になり過ぎ、かつ、軸直交方向からの力に対する強度が十分でなくなるため、好ましくない。 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. In the cross-axis orthogonal section of the shaft portion, 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. If 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. On the other hand, if 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.
 上記の杖は、1本の筒体等から形成されたシャフト部を備える、折り畳むことができない、いわゆる直式の杖であってもよく、この場合は接続部などを省略でき、シャフト部を軽量にできて好ましい。しかし本発明の杖は、上記のシャフト部を複数のシャフト部分から構成した、いわゆる折り畳み式の杖であってもよく、この場合は、不使用時に杖を折り畳んでコンパクトにでき、容易に携帯できるので好ましい。 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. However, 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.
 即ち上記のシャフト部を、互いに連結・分離可能な複数のシャフト部分から構成し、互いに隣接するシャフト部分の、一方のシャフト部分の第1連結端部に、これに対向する他方のシャフト部の第2連結端部内へ挿抜可能な小径部を設けることで、上記の折り畳み式杖にすることができる。このときのシャフト部分の数、即ち折り畳み段数は、特定の値に限定されず、杖の長さと携帯時の寸法とから、例えば5段~7段など、任意の段数に適宜設定される。なお、上記の小径部は、シャフト部分とは別々に製造されて、接着剤により接着されていてもよく、シャフト部分の連結端部に一体に形成したものであってもよい。前記の接着剤は、公知の物を使用することができ、特に限定されない。 That is, 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. By providing a small-diameter portion that can be inserted into and removed from the two connecting end portions, the above-described folding cane can be obtained. 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. In addition, said small diameter part may be manufactured separately from the shaft part, may be adhere | attached with the adhesive agent, and may be integrally formed in the connection end part of the shaft part. A well-known thing can be used for the said adhesive agent, It does not specifically limit.
 上記の小径部は、特定の材質に限定されないが、上記のシャフト部に用いたような高強度有機繊維強化樹脂層を用いて形成してあると、シャフト部分同士の接続部を良好に補強でき、この応力の加わり易い接続部での破断を効果的に防止できて好ましく、特にパラ系アラミド繊維などの高強度有機繊維強化樹脂層のみを用いて形成してあると、一層好ましい。 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.
 上記の折り畳み式杖が、上記の互いに連結された第1連結端部と第2連結端部とを覆う筒状のジョイントカバーを備え、このジョイントカバーを、一端を上記の第1連結端部と第2連結端部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すると、シャフト部分同士を連結した際にこのジョイントカバーでそのシャフト部分の端部を締め付けるように保持でき、ガタツキの発生を抑えることができて好ましい。 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. When it is configured to be externally fitted and fixed to one of the second connecting end portions and to be able to insert and remove the other connecting end portion into the other end, when the shaft portions are connected to each other, this joint cover It is preferable because the end can be held tightly and the occurrence of rattling can be suppressed.
 前記のグリップ部の形態としては、本発明の効果を妨げない限り特に限定されず、例えば、I字形、T字形等が挙げられる。このグリップ部は、樹脂からなるものでもよく、任意の芯材を用いてその外側を樹脂で被覆してもよいが、中空構造であると軽量にできて好ましく、中空構造の芯材を用いてもよい。 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.
 またこのグリップ部に用いる樹脂材料としては、本発明の効果を妨げない限り特に限定されず、例えば、ポリエステル樹脂や、ポリアミド樹脂(例えばナイロン6、66ナイロン、MCナイロン等のナイロン樹脂等)、アクリル樹脂、ABS樹脂、ポリオレフィン樹脂(例えばポリプロピレン樹脂、ポリエチレン樹脂等)、ポリブチレンテレフタレート樹脂、ポリエチレンテレフタレート樹脂等が挙げられ、さらに繊維で補強した樹脂を用いてもよい。また上記の芯材に用いる材料としては、シリコーン、ナイロン等が挙げられる。特に上記のグリップ部を、例えば上記のシャフト部と同一材料など、炭素繊維強化樹脂や高強度有機繊維強化樹脂を用いて形成すると、軽量でありながら高い強度を備えることができ、しかも安価に実施できて好ましい。 The resin material used for the grip portion is not particularly limited as long as the effects of the present invention are not hindered. For example, 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. Moreover, silicone, nylon, etc. are mentioned as a material used for said core material. In particular, if 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.
 上記のグリップ部は、長さや直径などの寸法は必要に応じて適宜設定でき、製造方法は特に限定されず、公知の方法を用いて製造することができ、市販品を使用することもできる。
 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.
 上記のシャフト部の下端には石突きを設けたものであってもよい。この石突きは特定の形状や材質のものに限定されないが、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と、使用特性に優れるうえ、耐摩耗性に優れるので好ましい。 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.
 即ち、上記の高強度有機繊維強化樹脂を用いて形成した石突きを備える杖にあっては、これを用いて歩行する際に、杖の先端の石突きで路面を軽く叩いたりなぞったりして探ると、石突きが探査する対象物に対し良好に反応する。例えば、石突きが路面と接触すると軽く飛び跳ねるように挙動して、その僅かな跳ね返り具合や叩いたときの音、表面をなぞった感触等が、アスファルト舗装とコンクリート舗装など路面の種類や材質により明確に相違する。これらの挙動等は石突きの硬さや密度、弾性係数、摩擦抵抗、耐摩耗性など、材質に基づく各種特性が総合的に影響しているものと考えられる。 That is, when walking with a cane provided with a stone stick formed using the above-mentioned high-strength organic fiber reinforced resin, the road surface is lightly tapped or traced with the stone stick at the tip of the cane. When searched, 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.
 この結果、この石突きを備える杖にあっては、路面上の障害物や凹凸だけでなく、路面の微細な凹凸や材質感などを使用者へ鋭敏に伝えることができ、進行方向の路面の種類等をより正確に把握することができるので、視覚障害者が大いに安心感を得て、より安全に歩行することができる利点がある。また、探査する対象物に対し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軽減できる利点がある。さらに、探査対象物を叩いたときの音が過剰に大きくなることを抑制でき、操作性に優れる利点もある。これらの点からこの杖は優れた使用特性を発揮でき、特に視覚障害者が用いる白杖であると、センサとしての機能を良好に発揮できて好ましく、さらに軽量であるうえ、耐久性に優れる利点もある。 As a result, 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.
 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は、特定の配合量に限定されないが、少なすぎると使用特性や耐摩耗性の効果が低く、過剰に多いと合成樹脂中に分散させることが容易でない。このため、高強度有機繊維の配合比率は、10~60質量%であると好ましく、より好ましくは20~50質量%に設定される。 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. For this reason, the blending ratio of the high-strength organic fibers is preferably 10 to 60% by mass, more preferably 20 to 50% by mass.
 上記の高強度有機繊維は、引張強度など機械的強度などが高い有機繊維であればよく、特定の材質のものに限定されない。例えば、超高分子量ポリエチレン繊維、全芳香族ポリアミド繊維、全芳香族ポリエステル繊維、ヘテロ環高性能繊維、ポリアセタール繊維等が挙げられ、これらの繊維は単独で、または2種以上を任意の割合で混合して使用することができる。この高強度有機繊維として、具体的には例えばパラ系アラミド繊維が好ましく用いられ、中でもポリパラフェニレンテレフタルアミド繊維が、フィブリル化して分散し易いため、特に好ましい。 The high-strength organic fiber is not limited to a specific material as long as it has high mechanical strength such as tensile strength. For example, 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. Can be used. Specifically, for example, 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.
 上記の高強度有機繊維は短繊維の状態で合成樹脂材料中に分散される。この短繊維は合成樹脂材料中に分散できる寸法であればよく、特定の太さや長さに限定されないが、フィラメントの繊度が1.1~2.3デシテックス程度であり、繊維長が2~8mm程度であると、合成樹脂材料中に良好に分散でき、しかも石突きに必要な使用特性や耐摩耗性等の特性を充分に発揮できて好ましい。 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.
 上記の合成樹脂は、高強度有機繊維を分散でき石突きに形成できるものであればよく、特定の材質に限定されないが、熱可塑性合成樹脂であると成形が容易であり、好ましい。具体的には、例えば、ポリエステル樹脂や、ポリアミド樹脂(例えば6ナイロン、66ナイロン、MCナイロン等のナイロン樹脂等)、アクリル樹脂、ABS樹脂、ポリオレフィン樹脂(例えばポリプロピレン樹脂、ポリエチレン樹脂等)、ポリブチレンテレフタレート樹脂、ポリエチレンテレフタレート樹脂等を挙げられるが、特にポリアミド樹脂は耐摩耗性に優れるので好ましい。 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. Specifically, for example, 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.
 本発明は上記のように構成され作用することから、次の効果を奏する。 Since the present invention is configured and operates as described above, the following effects can be obtained.
 (1)炭素繊維強化樹脂層が高い剛性を備えているので、軸方向に力を受けた場合にシャフト部が湾曲したり折れ曲がったりせず、使用者が安心して杖を使用することができる。
 (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.
 (5)軸直交方向から大きな曲げ衝撃を受けても高強度有機繊維強化樹脂層が座屈変形することでその衝撃を緩衝でき、耐衝撃性等の機械的強度において優れた性能を発揮して、シャフト部の破断を良好に防止できる。
 (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.
本発明の第1実施形態を示し、図1(a)は直式杖の外観図、図1(b)は図1(a)のA-A線矢視端面図である。直式杖の外観図である。1 shows a first embodiment of the present invention, FIG. 1 (a) is an external view of a straight cane, and FIG. 1 (b) is an end view taken along line AA in FIG. 1 (a). It is an external view of a direct cane. 第1実施形態の、シャフト部の積層構造を示す一部破断図である。It is a partially broken figure which shows the laminated structure of the shaft part of 1st Embodiment. 第1実施形態の杖の、グリップ部の一部破断図である。It is a partially broken figure of the grip part of the cane of a 1st embodiment. 第1実施形態の杖の、石突き近傍の一部破断斜視図である。It is a partially broken perspective view of the cane according to the first embodiment in the vicinity of the stone bump. 本発明の第2実施形態を示す、シャフト部の積層構造を示す一部破断図である。It is a partially broken view which shows the laminated structure of the shaft part which shows 2nd Embodiment of this invention. 本発明の第3実施形態を示し、図6(a)は折り畳み式杖の外観図であり、図6(b)は図6(a)のB部の拡大断面図である。6 shows a third embodiment of the present invention, FIG. 6 (a) is an external view of a folding cane, and FIG. 6 (b) is an enlarged sectional view of part B of FIG. 6 (a). 第3実施形態の、折り畳んだ状態の杖の外観図である。It is an external view of the cane of the folded state of 3rd Embodiment. 第3実施形態の杖の、連結前のジョイントカバー近傍の断面図である。It is sectional drawing of the joint cover vicinity before the connection of the cane of 3rd Embodiment. 第3実施形態の杖の、連結状態でのジョイントカバー近傍の断面図である。It is sectional drawing of the joint cover vicinity in the connection state of the cane of 3rd Embodiment. 本発明の変形例1を示す、グリップ部の外観図である。It is an external view of the grip part which shows the modification 1 of this invention. 本発明の変形例2を示す、石突き近傍の部分図である。It is a fragmentary figure of the stone thrust vicinity which shows the modification 2 of this invention. 補修性測定に用いた緊急用補修キットを示す斜視図である。It is a perspective view showing an emergency repair kit used for repairability measurement. 補修性測定時の筒体の状態を示す要部の斜視図である。It is a perspective view of the principal part which shows the state of the cylinder at the time of repair property measurement. 本発明のシャフト部の各特性値を、比較例と対比して測定した結果を示す対比表1である。It is the comparison table 1 which shows the result of having measured each characteristic value of the shaft part of this invention in contrast with the comparative example. シャフト部の外表面の耐摩耗性を測定する、測定装置の概略図である。It is the schematic of the measuring apparatus which measures the abrasion resistance of the outer surface of a shaft part. 石突きの使用特性を測定する際に用いた路面を示し、図16(a)はアスファルト舗装の写真であり、図16(b)は表面に小石を配したコンクリート舗装の写真であり、図16(c)はタイル状に形成したコンクリート舗装の写真である。FIG. 16 (a) is a photograph of asphalt pavement, FIG. 16 (b) is a photograph of concrete pavement with pebbles on the surface, and FIG. (c) is a photograph of a concrete pavement formed in a tile shape. 本発明の石突きの使用特性を比較例と対比して測定した結果を示す対比表2である。It is 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. 本発明の石突きの摩耗特性を、比較例と対比して測定した結果を示す対比表3である。It is 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.
 以下、図面に基づいて本発明を具体的に説明する。
 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.
 図1(b)に示すように、上記のシャフト部(4)は中空で軸直交断面が真円の筒状に形成してある。このシャフト部(4)は、図2に示すように、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)とガラス繊維強化樹脂層(33)とを備えている。
 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).
 図1と図2に示すように、上記の第2高強度有機繊維強化樹脂層(31b)の外側には上記の第2ガラス繊維強化樹脂層(33b)を積層し、その外周面に、表示層(34)として白色の反射テープ(15)や赤色表示テープ(16)が貼着してある。そしてこの表示層(34)の外側を耐摩耗性透明樹脂層(35)で覆ってある。この耐摩耗性透明樹脂層(35)は、上記の表示層(34)を効果的に保護できる、耐摩耗性や耐水性等に優れたものであればよく、特定の材質のものに限定されない。具体的には、例えばハイミラン(商品名、三井・デュポン ポリケミカル株式会社製)などのアイオノマー樹脂製フィルム等が、単層または複数層積層して用いられる。 As shown in FIGS. 1 and 2, 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. . Specifically, for example, 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.
 上記のシャフト部(4)の軸直交断面における、中空部(17)とその周囲の外殻部(18)との断面積比率は特定の比率に限定されないが、軸方向と直交方向からの力に対して十分な強度と剛性を有し、且つ長時間の使用に耐えられるほど軽量である点から、通常、85:15~56:44の範囲で、より好ましくは80:20~60:40の範囲内で、さらに好ましくは75:25~62:38の範囲内で、適宜設定される。 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.
 上記のシャフト部(4)は、例えば杖(7)の使用者に自転車がぶつかった場合など、軸直交方向に衝撃を受けた場合にも、容易に破断せぬように、その軸直交方向の力に対する耐衝撃性は10J以上の衝撃吸収エネルギーのものが好ましく、安全性および補修性により優れる点から15J以上のものがより好ましい。なおこの耐衝撃性は、インストロン社の落錘型衝撃試験機(製品名:落錘型衝撃試験機 Dynatup(登録商標) 9200シリーズ)等を用いて、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測定できる。 For example, when the bicycle hits the user of the cane (7), 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).
 上記のシャフト部(4)は、一端から他端へ向かって外径が変化するテーパー形状の筒体であってもよいが、一端から他端まで外径が変化しない筒体であると、任意の長さに成形したのち、これを所定の寸法に切断することで上記のシャフト部(4)を簡単に製造することができ、好ましい。 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.
 上記のシャフト部(4)を構成する高強度有機繊維強化樹脂層(31)は、公知の方法によって製造できる。即ち、例えばパラ系アラミド繊維などの高強度有機繊維に、エポキシ樹脂などの樹脂を含浸させて所定の円筒状に成形し、これを例えば、室温~130℃程度で加熱して樹脂を硬化させた後、所定の長さに切断することで製造される。上記の炭素繊維強化樹脂層(32)やガラス繊維強化樹脂層(33)も同様に製造される。 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.
 上記の高強度有機繊維強化樹脂層(31)を構成する有機繊維は特定のものに限定されず、例えば超高分子量ポリエチレン繊維、全芳香族ポリアミド繊維、全芳香族ポリエステル繊維、ヘテロ環高性能繊維、ポリアセタール繊維など、任意のものを単独で、あるいは2種以上を組み合わせて用いることができる。
 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.
 上記の超高分子量ポリエチレン繊維とは、超高分子量ポリエチレン樹脂からなる繊維をいう。ここで、超高分子量ポリエチレン樹脂とは、分子量が20万程度以上、好ましくは60万程度以上であり、ホモポリマーの他、炭素原子数3~10程度の低級α-オレフィン類、例えばプロピレン、ブテン、ペンテン、へキセン等との共重合体も含むものが好適である。エチレンとα-オレフィンとの共重合体の場合、後者の割合は炭素数1000個当たり平均0.1~20個程度、好ましくは平均0.5~10個程度であるような共重合体が好ましい。超高分子量ポリエチレン繊維の製造方法は、例えば特開昭55-5228号公報、特開昭55-107506号公報等に開示されており、これら自体公知の方法を用いてもよい。また、超高分子量ポリエチレン繊維として、ダイニーマ(商品名、東洋紡績株式会社製)、スペクトラ(商品名、ハネウエル社製)、ハイゼックスミリオン(商品名、三井化学株式会社製)等の市販品を用いてもよい。 The above ultra high molecular weight polyethylene fiber refers to a fiber made of ultra high molecular weight polyethylene resin. Here, the ultrahigh molecular weight polyethylene resin has a molecular weight of about 200,000 or more, preferably about 600,000 or more. In addition to homopolymers, lower α-olefins having about 3 to 10 carbon atoms such as propylene, butene, etc. Further, those containing a copolymer with pentene, hexene and the like are preferable. In the case of a copolymer of ethylene and α-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. . Methods for producing 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. In addition, as 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.
 上記の全芳香族ポリアミド繊維としては、特に限定されないが、例えば、アラミド繊維等が挙げられる。アラミド繊維としては、パラ系アラミド繊維が好ましい。前記パラ系アラミド繊維としては、ポリパラフェニレンテレフタルアミド繊維(東レ・デュポン株式会社製、商品名:ケブラー29、49、149等)又はコポリパラフェニレン-3,4’-ジフェニルエーテルテレフタルアミド繊維(帝人株式会社製、商品名:テクノーラ)等が挙げられ、中でも、上記のポリパラフェニレンテレフタルアミド繊維が特に好ましい。かかる全芳香族ポリアミド繊維は、公知又はそれに準ずる方法で製造でき、また、上記のような市販品を用いてもよい。 The above-mentioned wholly aromatic polyamide fiber is not particularly limited, and examples thereof include aramid fiber. As an aramid fiber, a para-aramid fiber is preferable. Examples of 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.
 上記の全芳香族ポリエステル繊維としては、特に限定されないが、例えば、パラヒドロキシ安息香酸の自己縮合ポリエステル、テレフタル酸とハイドロキノンからなるポリエステル、又はパラヒドロキシ安息香酸と6-ヒドロキシ-2-ナフトエ酸からなるポリエステルからなる繊維等が挙げられる。全芳香族ポリエステル繊維は、公知又はそれに準ずる方法で製造でき、また、例えばベクトラン(商品名、株式会社クラレ製)等の市販品を用いることもできる。 The wholly aromatic polyester fiber is not particularly limited. For example, 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.
 前記ヘテロ環高性能繊維としては、特に限定されないが、例えば、ポリパラフェニレンベンゾビスチアゾール(PBZT)繊維、又はポリパラフェニレンベンゾビスオキサゾール(PBO)繊維等が挙げられる。ヘテロ環高性能繊維は、公知又はそれに準ずる方法で製造でき、また、例えばザイロン(商品名、東洋紡績株式会社製)等のPBO繊維等を用いることもできる。 The heterocyclic high-performance fiber is not particularly limited, and examples thereof include polyparaphenylene benzobisthiazole (PBZT) fiber and polyparaphenylene benzobisoxazole (PBO) fiber. 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.
 前記ポリアセタール繊維は、特に限定されないが、公知又はそれに準ずる方法で製造でき、また、例えばテナック(商品名、旭化成株式会社製)、デルリン(商品名、デュポン社製)等の市販品を用いることもできる。 Although 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.
 上記の高強度有機繊維や炭素繊維、ガラス繊維に含浸される樹脂としては、本発明の効果を妨げない限り特に限定されず、エポキシ樹脂のほか、不飽和ポリエステル樹脂、ビニルエステル樹脂等の熱硬化性樹脂等が挙げられる。又、熱可塑性樹脂も挙げられる。これらの樹脂は単独で、または2種以上を任意の割合で混合して使用することができる。 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. In addition to epoxy resin, thermosetting such as unsaturated polyester resin and vinyl ester resin. Resin etc. are mentioned. Moreover, a thermoplastic resin is also mentioned. These resins can be used alone or in admixture of two or more at any ratio.
 前記エポキシ樹脂としては、ビスフェノールA、ビスフェノールAD、ビスフェノールFもしくはビスフェノールSのジグリシジルエーテル化合物またはその高分子量同族体、フェノールノボラック型ポリグリシジルエーテルまたはクレゾールノボラック型ポリグリシジルエーテル類等が挙げられる。さらにこれらのハロゲン化誘導体も使用できる。さらに合成過程で、ビスフェノールA、ビスフェノールAD、ビスフェノールF、ビスフェノールS等のフェノール類をこれらのグリシジルエーテルと反応させて得られた芳香族系エポキシ樹脂等を使用してもよく、また脂肪族系エポキシ樹脂を使用してもよい。エポキシ樹脂は本発明の効果を妨げない限り特に限定されず、公知の製造方法により得ることができ、市販品を用いてもよい。 Examples of the epoxy resin 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.
 前記不飽和ポリエステル樹脂としては、本発明の効果を妨げない限り特に限定されず、公知の方法により製造されるものを用いることができ、市販品を用いてもよい。例えば、多価アルコールからなるアルコール成分と、α、β-不飽和多価カルボン酸類と、飽和多価カルボン酸類および芳香族多価カルボン酸類からなる酸成分とを用いて公知の製造方法により得ることができる。ビニルエステル樹脂も本発明の効果を妨げない限り特に限定されず、公知の方法により製造されるものを用いることができ、市販品を用いてもよい。 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. For example, it can be obtained by a known production method using an alcohol component composed of a polyhydric alcohol, an α, β-unsaturated polyvalent carboxylic acid, and an acid component composed of a saturated polyvalent carboxylic acid and an aromatic polyvalent carboxylic acid. Can do. 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.
 前記熱可塑性樹脂としては、本発明の効果を妨げない限り特に限定されず、スチレン系熱可塑性樹脂、ポリオレフィン系熱可塑性樹脂、ポリ塩化ビニル系熱可塑性樹脂、ポリウレタン系熱可塑性樹脂、ポリエステル系熱可塑性樹脂、ポリイミド系熱可塑性樹脂等、どの熱可塑性樹脂を用いてもよいが、ポリオレフィン系熱可塑性樹脂が好ましい。前記ポリオレフィン系熱可塑性樹脂としては、特に限定されないが、ポリプロピレン樹脂、ポリスチレン樹脂、アクリロニトリル・ブタジエン・スチレン樹脂(ABS樹脂)等のポリオレフィン系熱可塑性樹脂等が挙げられる。また、エチレン・プロピレンゴム(EPDM)、スチレン・ブタジエン共重合系合成ゴム(SBR)、ニトリルゴム(NBR)等の合成樹脂も使用できる。 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. Although it does not specifically limit as said polyolefin-type thermoplastic resin, Polyolefin-type thermoplastic resins, such as a polypropylene resin, a polystyrene resin, an acrylonitrile butadiene styrene resin (ABS resin), etc. are mentioned. Also, synthetic resins such as ethylene / propylene rubber (EPDM), styrene / butadiene copolymer synthetic rubber (SBR), and nitrile rubber (NBR) can be used.
 上記の各層における繊維と樹脂の含有比率は、本発明の効果を妨げない限り特定の値に限定されず、有機繊維や樹脂の種類、成形寸法によっても異なるが、軽量で、且つ充分な曲げ剛性など所望の強度を確保でき、かつ長時間の使用にも耐えられるほど軽量で、破断し難く安全性や補修性に優れる観点から、質量比で80:20~60:40の範囲内に設定され、より好ましくは75:25~65:35の範囲内に設定され、さらに好ましくは70:30~67:33の範囲内に設定される。樹脂含浸量が高すぎると適切な強度を容易に維持することができず、また、樹脂含浸量が低すぎると成形品として形態をなさず、成したとしても、適切な強度が得られないからである。ここで、上記の「適切な強度」とは、本発明の効果を合わせ持つための強度を意味する。 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. If the resin impregnation amount is too high, the appropriate strength cannot be easily maintained, and if the resin impregnation amount is too low, it will not form as a molded product, and even if it is made, an appropriate strength cannot be obtained. It is. Here, the above “appropriate strength” means strength for combining the effects of the present invention.
 上記のシャフト部(4)は、使用する高強度有機繊維や樹脂の種類、含有比率等によっても異なるが、比重が1.30~1.45程度であると好ましく、1.32~1.37であるとより好ましく、1.33~1.36であると特に好ましい。 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.
 上記の杖(7)の重量と強度は、杖(7)の太さや上記の外殻部(18)の肉厚、各繊維強化樹脂層(31・32・33)の繊維と樹脂との使用比率や肉厚のほか、樹脂の種類等によっても異なる。しかし、高強度有機繊維は炭素繊維に比べて比重が小さいので、炭素繊維強化樹脂層(32)を少なくし、高強度有機繊維樹脂層(31)を多くすることで、軽量で強度の高い杖(7)が得られる。この場合、シャフト部(4)の比重は、特定の値に限定されないが、1.30~1.45であると好ましく、シャフト部(4)の軸直交方向の力に対しても十分な曲げ剛性を有し、かつ長時間の使用にも耐えられるほど軽量である点から1.32~1.37であるとより好ましく、1.33~1.36であると特に好ましい。 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. In this case, 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.
 この第1実施形態での上記のグリップ部(1)はI字形に形成してあり、必要に応じて、任意の部位に繋ぎ手材(2)やストラップ(3)等を付設してある。ただし本発明では後述のように、このグリップ部(1)をT字形など他の形状に形成したものであってもよい。このグリップ部(1)の長さや太さは、使用者が確りと把持できる寸法に、適宜設定される。 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. However, in the present invention, as described later, 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.
 図3に示すように、上記のグリップ部(1)は、シャフト部(4)の上端から上方へ延設した中空構造からなるグリップ本体(19)を備える。このグリップ本体(19)は、例えばブロー成型や真空成型などにより、上記のシャフト部(4)の一端を所定形状に膨らませることでシャフト部(4)と一体に成形してもよい。このように成形した場合は、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に形成されるので、使用者が確りと把持し易いうえ、中空構造であるのでグリップ部(1)を容易に軽量化でき、また、上記のシャフト部(4)と同一の繊維強化樹脂材料を用いて形成されるので、強度の高いグリップ部(1)を安価に製作することができる。 As shown in FIG. 3, 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. When molded in this way, 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.
 ただし本発明では、別体のグリップ部(1)をシャフト部(4)の上端に接着剤等で固定してもよい。また、このグリップ部(1)は任意の芯材を用いて、その外側を樹脂で被覆してもよく、この場合に中空構造の芯材を用いてもよい。これらのグリップ部(1)は、市販品を使用することもできるが、公知の方法を用いて製造することができ、製造方法は特に限定されず、長さや直径などの寸法は必要に応じて適宜設定される。 However, in the present invention, 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 | cover the outer side with resin using arbitrary core materials, and may use the core material of a hollow structure in this case. 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.
 またこのグリップ部(1)に用いる樹脂材料としては、本発明の効果を妨げない限り特に限定されず、例えば、ポリエステル樹脂や、ポリアミド樹脂(例えばナイロン6、66ナイロン、MCナイロン等のナイロン樹脂等)、アクリル樹脂、ABS樹脂、ポリオレフィン樹脂(例えばポリプロピレン樹脂、ポリエチレン樹脂等)、ポリブチレンテレフタレート樹脂、ポリエチレンテレフタレート樹脂等が挙げられ、さらに繊維で補強した樹脂を用いてもよい。また上記の芯材に用いる材料としては、シリコーン、ナイロン等が挙げられる。特に上記のグリップ部(1)を、例えば炭素繊維強化樹脂や、高強度有機繊維強化樹脂を用いて形成すると、軽量でありながら高い強度を備えることができ、しかも安価に実施できて好ましい。 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. For example, 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. Moreover, silicone, nylon, etc. are mentioned as a material used for said core material. In particular, it is preferable to form the grip portion (1) using, for example, a carbon fiber reinforced resin or a high-strength organic fiber reinforced resin.
 上記のグリップ本体(19)の外表面は、そのまま外部に露出してもよいが、例えば凹凸模様など滑り止め形状に形成したり、図3に示すように滑止め部材(20)が付設してあると、使用者がこのグリップ部(1)を容易に保持できて好ましい。上記の滑止め部材(20)は、例えばウレタン等の合成樹脂やゴム材料等を被着したものであってもよく、或いはこれらの材料をテープ状に形成して上記の把持部の周囲に捲着したものであってもよい。特にテープ状の滑止め部材(20)を捲着してあると、この滑止め部材(20)が摩耗等で損傷した場合などに、容易に新しい滑止め部材(20)と交換できて好ましい。 The outer surface of the grip body (19) may be exposed to the outside as it is. For example, 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.
 図1と図4に示すように、上記のシャフト部(4)の下端には、前記の石突き(6)が装着してある。この石突き(6)は、高強度有機繊維強化樹脂を用いて、上半部が円錐台状であり、下半部が球面となった、いわゆるティアドロップタイプ(涙滴形)に形成してある。この石突き(6)の上端には装着穴(25)が凹設してあり、この装着穴(25)に上記のシャフト部(4)の下端が内嵌されて固定してある。 As shown in FIG. 1 and FIG. 4, 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).
 なお、上記の石突き(6)のシャフト部(4)への固定は、接着剤等で分離不能に固定すると、使用中に石突き(6)がシャフト部(4)から外れることがなく、好ましいが、圧入等により分離可能に固定しておくと、石突き(6)が摩耗した場合などに、新しい石突き(6)へ容易に交換できて好ましい。
 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.
 上記の石突き(6)の太さと長さは、本発明の効果を妨げない範囲で適宜設定することができ、例えば外径は、上記のシャフト部(4)の外径よりも大形に形成して、路面に配置された溝蓋の格子などへ容易に嵌り込まない大きさに設定してある。また、この石突き(6)の外表面は滑らかな曲面に形成してあり、路面や階段等の段差部や障害物等へ引っ掛かりにくいようにしてある。 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. For example, 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.
 上記の石突き(6)を形成する高強度有機繊維強化樹脂は、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ものである。この高強度有機繊維は、少なすぎると石突き(6)のセンサ機能が十分に発揮されず、過剰に多いと合成樹脂材料中に分散させることが容易でない。このため、上記の高強度有機繊維強化樹脂材料に占める高強度有機繊維の割合は、10~60質量%であると好ましく、より好ましくは20~50質量%に設定される。 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.
 上記の高強度有機繊維としては、前述とシャフト部(4)を構成する高強度有機繊維と同様、例えば超高分子量ポリエチレン繊維、全芳香族ポリアミド繊維、全芳香族ポリエステル繊維、ヘテロ環高性能繊維、ポリアセタール繊維等が挙げられ、任意のものを単独で、あるいは2種以上を組み合わせて用いることができる。具体的にはパラ系アラミド繊維が好ましく用いられ、中でもポリパラフェニレンテレフタルアミド繊維が特に好ましい。 Examples of the high-strength organic fiber 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.
 上記の合成樹脂材料中に分散される高強度有機繊維の寸法は、高強度有機繊維や合成樹脂材料の種類等によっても異なるが、フィラメントの繊度が1.1~2.3デシテックス程度であり、繊維長が2~8mm程度であると良好に分散できて好ましい。 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.
 上記の高強度有機繊維を分散させる合成樹脂材料としては、熱硬化性合成樹脂等であってもよいが、熱可塑性合成樹脂であると石突き(6)を所定形状に容易に形成できて好ましい。この熱可塑性合成樹脂としては、特定の材質に限定されないが、例えば6ナイロン、66ナイロン、MCナイロン等のポリアミド樹脂であると、高強度有機繊維の分散や、石突き(6)への成形が容易であるうえ、耐摩耗性等に優れるため、好ましい。 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.
 なお、上記の高強度有機繊維強化樹脂には、上記の高強度有機繊維に加えて、ポリアミド繊維など、任意の繊維材料が配合されていてもよく、さらに耐摩耗性、耐久性、耐光性等を高めるための任意の添加剤や、充填剤、着色剤などを加えたものであってもよい。 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.
 上記の第1実施形態では、表示部を耐摩耗性透明樹脂層で覆う場合について説明した。しかし本発明では、例えば図5に示す第2実施形態のように、上記の表示層(34)の外側に筒状のガラス繊維強化樹脂層(33b)を積層したものであってもよい。 In the first embodiment, the case where the display unit is covered with the wear-resistant transparent resin layer has been described. However, in the present invention, as in the second embodiment shown in FIG. 5, for example, a cylindrical glass fiber reinforced resin layer (33b) may be laminated on the outside of the display layer (34).
 即ちこの第2実施形態では、第2高強度有機繊維強化樹脂層(31b)の外側に表示層(34)が形成してあり、その外側に第2ガラス繊維強化樹脂層(33b)が一体的に積層してある。この第2ガラス繊維強化樹脂層(33b)は透明であるので、上記の表示層(34)は外方から良好に目視され、またこの第2ガラス繊維強化樹脂層(33b)は耐摩耗性や耐水性に優れるので、上記の表示層(34)が摩耗したり水に濡れて剥がれたりすることが防止される。しかも上記の第1実施形態と異なり、耐摩耗性透明樹脂層を必要としないので、その分安価に実施できる。その他の構成は上記の第1実施形態と同様であり、同様に作用するので説明を省略する。 That is, in the second embodiment, 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.
 上記の第1実施形態では、直式の杖について説明した。しかし本発明では、例えば図6と図7に示すように、折り畳み式杖であってもよい。
 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).
 上記のシャフト部分(14)は、第1実施形態のシャフト部(4)と同様に、軸直交断面が真円の中空円筒状に形成してあり、図6(b)に示すように、炭素繊維強化樹脂層(32)と、その内・外周面にそれぞれ一体に形成した高強度有機繊維強化樹脂層(31)とを備え、さらにその外側と内側にそれぞれガラス繊維強化樹脂層(33)を備えている。また、第2ガラス繊維強化樹脂層(33b)の外周面には、白色の反射テープ(15)や赤色表示テープ(16)が貼着してあり、その外側を耐摩耗性透明樹脂層(35)で覆ってある。 Similar to the shaft portion (4) of the first embodiment, 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. I have. Further, 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 ).
 図8と図9に示すように、上記の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、小径部としてインナーパイプ(9)が固設してあり、このインナーパイプ(9)内に、シャフト部分(14)同士を接続しているゴム紐(8)が挿通してある。上記の第1連結端部(21)から外方へ突出させたインナーパイプ(9)の突出長さは、特定の寸法に限定されず、シャフト部分(14)同士を確りと連結できる長さがあればよく、例えば30~50mm程度に設定される。
 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.
 上記のインナーパイプ(9)は、上記のシャフト部分(14)の内径と略等しい外径に形成してあり、対面する他方のシャフト部分(14)の第2連結端部(22)内へ挿抜可能に構成してある。なおこの実施形態では、シャフト部分(14)とは別体に形成したインナーパイプ(9)の一端を、上記の第1連結端部(21)内へ圧入もしくは公知の接着剤等により固定してある。しかし本発明では上記の小径部を、シャフト部分(14)の接続端部に一体に形成したものであってもよい。このインナーパイプ(9)は特定の材質に限定されないが、上記のシャフト部分(14)に用いたような高強度有機繊維強化樹脂層やガラス繊維強化樹脂層を備えると好ましく、特にパラ系アラミド繊維などの高強度有機繊維強化樹脂層のみを備えると、一層好ましい。ただし炭素繊維強化樹脂層は、上記のシャフト部分(14)と異なって含まないほうが好ましい。 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).
 上記の第1連結端部(21)には、前記のジョイントカバー(5)の一方の端部が外嵌固定してある。このジョイントカバー(5)はシャフト部分(14)同士を連結できる筒状であればよく、特定の形状に限定されない。しかしこの外表面は、他物に引っ掛からないような滑らかな形状であると好ましく、例えば、両端ほどやや径小となる円筒状に形成してあり、内面の中央部にリング状の受止め部(23)が形成してある。上記のゴム紐(8)はこの受止め部(23)内に挿通してある。また上記の第1連結端部(21)は、先端をこの受止め部(23)へ当接する状態に、ジョイントカバー(5)の一端から挿入され、圧入または公知の接着剤等により確りと固定してある。 One end of the joint cover (5) is fitted and fixed to the first connecting end (21). 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.
 上記のジョイントカバー(5)の他方の端部は、上記の第2連結端部(22)側に臨ませて開放してあり、この端部内に差込み部(24)が形成してある。上記の第2連結端部(22)をこの差込み部(24)内へ挿入することで、シャフト部分(14)同士が連結され、この差込み部(24)から抜きとることでシャフト部分(14)同士が分離される。 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. By inserting the second connecting end (22) into the insertion portion (24), 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.
 上記の差込み部(24)は、外端から内方に向かって小径となるテーパー部(10)と、このテーパー部(10)の内端からさらに内方へ、上記の受止め部(23)まで延びる所定の内径を備えたストレート部(11)とを備えている。このストレート部(11)の内径は、上記の第2連結端部(22)の外周面をガタツキなく確りと締め付ける寸法に設定してある。 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.
 上記のジョイントカバー(5)の長さは、特定の寸法に限定されず、本発明の効果を妨げない範囲で適宜設定することができる。上記のテーパー部(10)の長さは、連結しようとするシャフト部分(14)同士の軸心方向を容易に一致させて、上記の第2連結端部(22)を円滑に案内できるように、上記のストレート部(11)より長いことが好ましく、具体的には、テーパー部:ストレート部=5~2:1程度の長さとすることが好ましい。また上記のストレート部(11)の長さは、連結部分でのガタツキの発生を抑えることができる長さであればよく、本発明の効果を妨げない限り特定の寸法に限定されないが、過剰に長いと連結・分離操作が容易でなくなるので、通常、シャフト部(4)の外径の20~80%程度が好ましい。 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 tapered portion (10) is such that the axial center directions of the shaft portions (14) to be connected can be easily matched to smoothly guide the second connecting end portion (22). It is preferable that the length is longer than the straight portion (11), specifically, the taper portion: straight portion = 5 to 2: 1. Further, 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.
 上記のジョイントカバー(5)は、例えばナイロン6などのポリアミドを用いて製造されるが、連結部分を確りと保持できればよく、本発明の効果を妨げない限り特定の材料に限定されない。具体的には、例えば、エポキシ樹脂、不飽和ポリエステル樹脂、ビニルエステル樹脂等の熱硬化性樹脂を用いてもよく、ポリエステル樹脂、ポリアミド樹脂(例えばナイロン6、66ナイロン、MCナイロン等のナイロン樹脂等)、アクリル樹脂、ABS樹脂、ポリオレフィン樹脂(例えばポリプロピレン樹脂、ポリエチレン樹脂等)、ポリブチレンテレフタレート樹脂、ポリエチレンテレフタレート樹脂等の熱可塑性樹脂を用いてもよく、合成ゴムやエラストマーなどゴム弾性を備えた材料を用いてもよい。このジョイントカバー(5)は、公知の方法によって製造することができ、製造時には必要に応じて公知の添加剤、顔料等を適宜加えてもよく、さらに繊維で補強した樹脂を用いてもよく、製造後に着色等をしてもよい。 The joint cover (5) is manufactured using, for example, polyamide such as nylon 6. However, 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. Specifically, for example, 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., and 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.
 上記のジョイントカバー(5)の差込み部(24)内へ、上記の第2連結端部(22)を挿入すると、この第2連結端部(22)が上記のテーパー部(10)で円滑に案内され、第2連結端部(22)の先端は、上記のストレート部(11)を経て、前記の受止め部(23)に受け止められ、図9に示す連結した状態となる。この連結状態では、第2連結端部(22)の外周面がストレート部(11)の内面で締め付けられており、ガタツキの発生が抑制される。 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.
 これにより、上記の連結端部など杖(7)の一部に応力が集中することを防止でき、しかも応力が集中し易い連結部分をジョイントカバー(5)で外側から確りと補強して機械的強度を高めることができるので、この応力集中による杖(7)の破損とこれに伴う使用者の転倒の虞を低減し安全に杖(7)を用いることができて好ましい。またガタツキがないため、連結・分離操作時に連結端部同士がこすれて早期に摩耗するという虞がなく、杖(7)の耐久性を向上させることができる。さらに、また使用時に杖(7)の軸が屈曲することがないので、使用者が安心して使用することができる。しかも上記のシャフト部分(14)同士は、連結端部やこれに設けた上記の小径部(9)を挿抜操作するだけでよく、例えば連結端部をねじ止め機構などの特殊な構造に形成する必要がないので、簡単な構造で安価に製造できるうえ、容易に連結・分離操作できて好ましい。 As a result, it is possible to prevent stress from concentrating on a part of the cane (7) such as the above-mentioned connecting end portion, and to reinforce mechanically the connecting portion where stress is easily concentrated from the outside by the joint cover (5). Since the strength can be increased, it is preferable that 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 | shaft of a cane (7) does not bend at the time of use, a user can use it in comfort. Moreover, 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). For example, 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.
 なおこの第3実施形態では、上記のジョイントカバー(5)の一方の端部を上記の第1連結端部(21)に固定し、他方の端部内へ上記の第2連結端部(22)を挿抜できるように構成した。しかし本発明では、小径部を備えていないシャフト部分(14)の第2連結端部(22)に、このジョイントカバー(5)の一方の端部を固定し、小径部を備えた他のシャフト部分(14)の第1連結端部(21)を、ジョイントカバー(5)の他方の端部内へ挿抜できるように構成してもよい。 In the third embodiment, 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. However, in the present invention, 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).
 なおこの第3実施形態では、上記の石突き(6)を、下部が滑らかな局面の円柱形となった、スタンダードタイプに形成してあり、上部はシャフト部(4)の外周面と滑らかに連続するように、上端ほど細径となる曲面に形成してある。この石突き(6)は、上記の第1実施形態と同様、高強度有機繊維強化樹脂で形成されており、上端に凹設された装着穴(25)へ、シャフト部(4)の下端が内嵌固定してある。上記のグリップ部(1)など、その他の構成は上記の第1実施形態と同様であり、同様に作用するので説明を省略する。 In addition, in this 3rd Embodiment, 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. Similar to the first embodiment, 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.
 上記の各実施形態では、いわゆるI字形のグリップ部(1)を用いた杖(7)についてそれぞれ説明した。しかし本発明では、例えば図10に示す変形例1のように、他の形状のグリップ部(1)を備えたものであってもよい。例えば図10(a)はいわゆるT字形のグリップ部(1)を備えた杖(7)を示し、図10(b)はL字形のグリップ部(1)を備えた杖(7)を示しており、いずれもシャフト部(4)の上端にこのグリップ部(1)を延設してある。 In each of the above embodiments, the cane (7) using the so-called I-shaped grip portion (1) has been described. However, in the present invention, a grip portion (1) having another shape may be provided as in Modification 1 shown in FIG. For example, FIG. 10 (a) shows a cane (7) having a so-called T-shaped grip portion (1), and FIG. 10 (b) shows a cane (7) having an L-shaped grip portion (1). In either case, the grip portion (1) is extended at the upper end of the shaft portion (4).
 上記の第1実施形態では、ティアドロップタイプの石突きを用い、第3実施形態ではスタンダードタイプの石突きを用いた。しかし本発明で用いる石突き(6)は、杖としての使用を妨げない限り、特定の形状に限定されない。例えば、第1実施形態のような直式杖において、上記のスタンダードタイプの石突きを用いてもよく、第3実施形態のような折り畳み式杖において、上記のティアドロップタイプの石突きを用いてもよい。また上記のスタンダードタイプの石突きは、例えば図11に示す変形例2のように、上部を細径にして他物への引っ掛かりを低減した、段付きのスタンダードタイプの石突き(6)を用いることも可能である。 In the first embodiment described above, a teardrop type stone thruster was used, and in the third embodiment, a standard type stone thruster was used. However, 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. For example, in the straight cane as in the first embodiment, the above-mentioned standard type stone thruster may be used, and in the folding cane as in the third embodiment, the above teardrop type stone thruster is used. Also good. In addition, 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.
 以下、実施例および比較例を用いて本発明を更に具体的に説明するが、本発明は以下の実施例のみに限定されるものではない。 Hereinafter, the present invention will be described more specifically using examples and comparative examples, but the present invention is not limited to the following examples.
 [実施例1]
 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.
 次に、内側から順に、1層のガラス繊維プリプレグと、3層の高強度有機繊維プリプレグと、1層の炭素繊維プリプレグと、2層の高強度有機繊維プリプレグと、1層のガラス繊維プリプレグとを順に積層して全体を一体化させ、加熱硬化させたのち、表面に反射テープを巻きつけ、さらにその外周面に、耐摩耗性透明樹脂フィルムとして、厚さ0.06mmのハイミランフィルム(商品名、三井・デュポン ポリケミカル株式会社製)を積層して上記の反射テープを覆い、実施例1の筒体を得た。 Next, in order from the inside, 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.
 [比較例1]
 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.
 [比較例2]
 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. .
 上記の得られた筒体は、いずれも外径が12mmであり、中空部と外殻部の断面積比率は67:33となっていた。
 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.
 〔剛性(撓み性)〕
 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.
 〔耐衝撃性〕
 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.
 〔安全性〕
 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.
 〔現場補修性〕
 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.
 上記の各特性値の測定結果は、図14に示す測定結果対比表1の通りである。
 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.
 上記の本発明の実施例1は、内面にガラス繊維強化樹脂層を備えるので、すべての層を高強度有機繊維プリプレグで形成した上記の比較例2と異なって、内面の耐摩耗性が優れており、例えばシャフト部内にゴム紐を配置した折り畳み式杖であっても、そのゴム紐でシャフト部の端部が早期に摩耗する虞がない。 Since 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.
 上記の実施例1は外側表面に巻きつけた反射テープのさらにその外周面に、耐摩耗性透明樹脂フィルムを配置したので、このフィルムを省略した従来品と比べて、その外周面の耐摩耗性が格段に優れており、反射テープの摩損を良好に防止することができる。これを確認するため、次の測定方法により外表面の耐摩耗性を測定した。 In Example 1 described above, 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.
 〔外表面の耐摩耗性〕
 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.
 上記の測定の結果、上記の耐摩耗性透明樹脂フィルムを省略し、反射テープが外面に露出している場合は、5往復で表面の反射テープが摩耗してテープの下のガラス繊維強化樹脂層が露出した。これに対し、反射テープの外側に耐摩耗性透明樹脂フィルムを配置した本発明の実施例1では、100回往復後でも反射テープが摩耗することはなかった。 As a result of the above measurement, when the wear-resistant transparent resin film is omitted and the reflective tape is exposed on the outer surface, the surface reflective tape is worn by 5 reciprocations and the glass fiber reinforced resin layer under the tape Exposed. On the other hand, in Example 1 of this invention which has arrange | positioned the abrasion-resistant transparent resin film on the outer side of a reflective tape, the reflective tape did not wear even after 100 reciprocations.
 次に、上記の実施例1の筒体に、ティアドロップタイプの石突き(6)を付設して実施例2とし、この石突き(6)の使用特性について、図16に示す実際の路面を対象として、情報伝達性と操作性を測定し、さらに階段の滑り止め具や路面の溝部等の凹凸を対象として対突っかかり性を測定した。測定に用いた上記の路面は、図16(a)に示すアスファルト舗装と、図16(b)に示す表面に小石を配したコンクリート舗装と、図16(c)に示すタイル状に形成したコンクリート舗装の3種類である。 Next, 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). There are three types of pavement.
 上記の石突き(6)は高強度有機繊維強化樹脂材料を用いて、最大外径が26.1mm、全長が40.4mmのティアドロップタイプに形成し、上端に形成した内径が13mmの装着穴(25)に、外径が12.5mmのシャフト部(4)の下端を挿入して、接着剤で固定した。上記の高強度有機繊維強化樹脂材料としては、ポリアミド樹脂(ナイロン6)に、ポリパラフェニレンテレフタルアミド繊維の短繊維を分散させたものを用いた。使用したポリパラフェニレンテレフタルアミド繊維は、1.7デシテックスのフィラメントを、繊維長6mmにカットしてポリアミド樹脂に混合し分散した。高強度有機繊維強化樹脂材料の配合比率は、ポリアミド樹脂を70質量%とし、ポリパラフェニレンテレフタルアミド繊維を30質量%とした。 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. In (25), the lower end of the shaft portion (4) having an outer diameter of 12.5 mm was inserted and fixed with an adhesive. As 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.
 [情報伝達性]
 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”.
 [操作性]
 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”.
 [対突っかかり性]
 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”.
 上記の各使用特性について、従来の杖の石突きと比較しながら測定した結果を、図6の測定結果対比表2に示す。
 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.
 上記の測定の結果から明らかなように、上記の比較例3~5では、いずれも路面の種類を容易に識別することができず、情報伝達性に劣ったが、これに対し本発明の実施例2では、上記の3種類の路面を容易に識別することができ、きわめて優れた情報伝達性を発揮することができた。
 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. .
 また本発明の実施例2は、比較例4はもとより、比較例3や比較例5よりもさらに優れた操作性を発揮することができた。
 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.
 次に、前記の石突き(6)について耐摩耗性を測定した。使用した試験体は、実施例3として、上記の第3実施形態で採用したスタンダードタイプの石突きに使用した、高強度有機繊維強化樹脂材料を用いた。この高強度有機繊維強化樹脂材料は、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の短繊維を配合して強化した、ポリアミド樹脂(66ナイロン)からなる。なお、繊維強化樹脂に対する高強度有機繊維の配合比率は、30質量%である。また、これと対比する試験体は、比較例6としてポリプロピレン樹脂(PP)単体による成形品を用い、比較例7としてポリアミド樹脂(ナイロン6)単体による成形品を用いた。 Next, the wear resistance of the above stone bump (6) was measured. 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. In addition, the mixture ratio of the high intensity | strength organic fiber with respect to fiber reinforced resin is 30 mass%. In addition, as a comparative specimen, a molded article made of a single polypropylene resin (PP) was used as Comparative Example 6, and a molded article made of a single polyamide resin (Nylon 6) was used as Comparative Example 7.
 試験方法はJIS K 7218:1986(プラスチックの滑り摩耗試験方法)に記載のA法に準拠し、次の条件で行った。
 ・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:2cm
   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: temperature 23 ± 2 ℃, humidity 50 ± 10% RH
・ Measuring device: Rotational dynamic friction and wear tester IIIT-2000-5000N (Takachiho Seiki Co., Ltd.)
 その試験結果は、図18に示す測定結果対比表3の通りである。
 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.
 上記の各実施形態で説明した杖やこれに用いる筒体は、本発明の技術的思想を具体化するために例示したものであり、各部の形状や寸法、積層数などをこの実施形態のものに限定するものではなく、本発明の特許請求の範囲内において種々の変更を加え得るものである。 The cane described in each of the above embodiments and the cylinder used therein are exemplified to embody the technical idea of the present invention, and the shape, dimensions, number of layers, etc. of each part are the same as in this embodiment. The present invention is not limited to this, and various modifications can be made within the scope of the claims of the present invention.
 例えば上記の第1実施形態では、シャフト部とグリップ部とを一体に形成したが、本発明では互いに別体に形成してこれらを互いに固定してもよい。
 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.
 本発明の杖は、視覚障害者用白杖のほか、登山、スキー等のスポーツ用または通常歩行用の杖として有用である。また、本発明の杖は、使用者の肉体的負担を軽減でき、特に高齢者、年少者、視覚障害者に対しても効果は大きく、自立支援を促進し、要介護者の社会参加および労働生産力の向上のためにも有用である。 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. In addition, 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.
 1…グリップ部
 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 SYMBOLS 1 ... Grip part 4 ... Shaft part 5 ... Joint cover 6 ... Stone butt 7 ... Cane 9 ... Small diameter part (inner pipe)
14 ... Shaft portion 17 ... Hollow portion 18 ... Outer shell portion 19 ... Grip body 20 ... Non-slip member 21 ... First connecting end 22 ... Second connecting end 31 ... High strength organic fiber reinforced resin layer 31a ... First height Strength organic fiber reinforced resin layer 31b ... second high strength organic fiber reinforced resin layer 32 ... carbon fiber reinforced resin layer 33 ... glass fiber reinforced resin layer 33a ... first glass fiber reinforced resin layer 33b ... second glass fiber reinforced resin layer 34 ... Display layer 35 ... Abrasion-resistant transparent resin layer

Claims (27)

  1.  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.
  2.  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. .
  3.  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.
  4.  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).
  5.  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).
  6.  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).
  7.  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).
  8.  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).
  9.  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.
  10.  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. .
  11.  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.
  12.  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.
  13.  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).
  14.  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.
  15.  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.
  16.  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.
  17.  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.
  18.  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.
  19.  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.
  20.  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.
  21.  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).
  22.  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.
  23.  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.
  24.  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).
  25.  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).
  26.  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.
  27.  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.
PCT/JP2011/074183 2011-02-09 2011-10-20 Cane and tubular body WO2012108081A1 (en)

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

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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

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CA2825701A1 (en) 2012-08-16
US20140041702A1 (en) 2014-02-13

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