[go: up one dir, main page]

WO2012108081A1 - Canne et corps tubulaire - Google Patents

Canne et corps tubulaire Download PDF

Info

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
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2011/074183
Other languages
English (en)
Japanese (ja)
Inventor
山本　勉
小菅　一彦
明人 宮崎
幸輝 土井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kosuge
KOSUGE AND CO Ltd
Original Assignee
Kosuge
KOSUGE AND CO Ltd
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/ja
Priority claimed from JP2011213921A external-priority patent/JP2013070917A/ja
Application filed by Kosuge, KOSUGE AND CO Ltd filed Critical Kosuge
Priority to CN2011800672639A priority Critical patent/CN103384482A/zh
Priority to CA2825701A priority patent/CA2825701A1/fr
Priority to US13/984,001 priority patent/US20140041702A1/en
Priority to KR1020137023312A priority patent/KR20140047583A/ko
Publication of WO2012108081A1 publication Critical patent/WO2012108081A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B9/00—Details
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B9/00—Details
    • A45B9/02—Handles or heads
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B9/00—Details
    • A45B9/04—Ferrules or tips
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H3/00—Appliances for aiding patients or disabled persons to walk about
    • A61H3/06—Walking aids for blind persons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B9/00—Details
    • A45B2009/005—Shafts
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B9/00—Details
    • A45B2009/005—Shafts
    • A45B2009/007—Shafts of adjustable length, e.g. telescopic shafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/01—Constructive details
    • A61H2201/0161—Size reducing arrangements when not in use, for stowing or transport
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/1372—Randomly noninterengaged or randomly contacting fibers, filaments, particles, or flakes

Definitions

  • the present invention relates to a cane such as a white cane for a visually impaired person, and more specifically, has sufficient strength excellent in impact resistance against a force from a direction orthogonal to the axis of the shaft portion, and is safe and durable. Further, the present invention relates to a cane that is excellent in repairability, is lightweight, and has high rigidity.
  • walking sticks are also called walking sticks and poles, and are used not only for visually handicapped and elderly people, but also for healthy people, such as trekking and light climbing.
  • a cane usually includes a rod-shaped shaft portion, a grip portion formed at the upper end of the shaft portion and gripped by the user, and a stone thrust attached to the lower end of the shaft portion.
  • these conventional canes have some structural differences, most of them are made of a material such as wood or aluminum alloy.
  • a so-called white cane used by a visually impaired person is often used in a state where the tip is slightly lifted from the ground for a long time.
  • Conventional wooden canes are heavy and have a heavy burden on the user.
  • this wooden cane has a problem in terms of strength and also has a problem that the shaft portion is warped and paint on the surface is peeled off due to repeated swelling and drying due to environmental changes.
  • the aluminum alloy cane is lighter than the wooden cane, it is still heavy when used for a long time, and there is a problem in that a dent or bend easily occurs due to impact.
  • Patent Document 1 Although the cane described in Patent Document 1 is also lighter than conventional wooden or aluminum alloy canes, it is still light enough to withstand long-term use, particularly for visually impaired people. However, further weight reduction is desired.
  • the cane having the above-described shaft portion made of a carbon fiber reinforced resin material has a high bending elastic modulus, for example, as applied to a golf shaft, because the carbon fiber has a high tensile strength and a high elastic modulus. It will be a thing. However, since carbon fiber has a small elongation and is not flexible because it is an inorganic fiber, it has a drawback that it is easily broken by an impact (bending impact) from the lateral direction to the shaft portion. Therefore, it is considered that the mechanical strength as a hit is sufficient as in a golf shaft, but in a cane using this, the work of hitting these frequently enters in order to investigate the situation of a walking road surface and an obstacle.
  • a cane in which the shaft portion described above is made of a carbon fiber reinforced resin material is severely damaged in its cross section when it is broken upon impact or the like, and the end of the hard fiber protrudes like a splinter from the broken surface.
  • the broken position and the degree of damage must be confirmed by groping. Therefore, there is a possibility that the fiber exposed from the broken surface may be stuck in the user's hand.
  • the above wand requires measures such as increasing the thickness so that it does not easily break even when subjected to an impact or the like, but this causes a problem of increasing the weight of the wand.
  • the broken part is severely damaged, there is a problem of repairability that it is difficult to perform simple repairs at the site, and the development of a cane that can be easily repaired at the site has been desired.
  • the shaft portion using a high-strength organic fiber reinforced resin made of, for example, para-aramid fiber and epoxy resin.
  • a high-strength organic fiber reinforced resin made of, for example, para-aramid fiber and epoxy resin.
  • the rigidity is reduced as compared with the case where a carbon fiber reinforced resin is used.
  • a high strength organic fiber reinforced resin layer is formed thick to increase the rigidity, the shaft portion becomes thick, the amount of resin used increases, and the weight of the cane becomes excessively large.
  • the technical problem of the present invention is to solve the above-mentioned problems, and has sufficient strength excellent in impact resistance against the force from the direction orthogonal to the axis of the shaft portion, safety, durability, and repairability. Furthermore, the object is to provide a cane that is lightweight and yet has high rigidity.
  • the present invention relates to a cane, which is a cane having a shaft portion (4) and a grip portion (1) at the upper end of the shaft portion (4), wherein the shaft portion (4) is a high-strength organic fiber reinforced resin.
  • Layer (31) and a carbon fiber reinforced resin layer (32), and the carbon fiber reinforced resin layer (32) is integrated with the high-strength organic fiber reinforced resin layer (31) at least on the outer peripheral surface thereof. It is characterized by being laminated.
  • the present invention 2 is a cylindrical body comprising a cylindrical high-strength organic fiber reinforced resin layer (31) and a carbon fiber reinforced resin layer (32), and the carbon fiber reinforced resin layer (32) is The high-strength organic fiber reinforced resin layer (31) is integrally laminated at least on the outer peripheral surface thereof.
  • the organic fibers constituting the high-strength organic fiber reinforced resin layer are light and have high tensile strength, and are more stretchable than inorganic fibers such as carbon fibers. There is no possibility that micro-cracks will be generated in the organic fiber due to the impact. Moreover, even if the shaft or cylinder is subjected to an impact (bending impact) from the direction orthogonal to the axis, the high-strength organic fiber reinforced resin layer is deformed in a buckling shape without breaking, and the impact is buffered.
  • the carbon fiber reinforced resin layer provided in the shaft part and the cylinder has high rigidity because the carbon fiber has a higher elastic modulus than the organic fiber, and the high strength organic fiber reinforced resin layer is excessively thick. There is no need to form.
  • the carbon fiber reinforced resin layer is integrally laminated with a high-strength organic fiber reinforced resin layer on its outer peripheral surface. Even if the carbon fiber is broken due to an impact from the direction perpendicular to the axis, the carbon fiber reinforced resin layer is protected by the high-strength organic fiber reinforced resin layer, and the shaft and the cylinder are only buckled and severely broken. In addition, the broken carbon fiber is prevented from protruding in a thorn shape.
  • the cane with the shaft portion or the like buckled and deformed is easily repaired by using, for example, a commercially available repair kit.
  • the carbon fiber reinforced resin layer may be formed by integrally laminating a high-strength organic fiber reinforced resin layer on at least the outer peripheral surface, but the high-strength organic fiber reinforced resin is respectively provided on the outer peripheral surface and the inner peripheral surface.
  • the carbon fiber reinforced resin layer is sandwiched between the inner and outer high strength organic fiber reinforced resin layers, and is better protected by these high strength organic fiber reinforced resin layers. Breakage of the shaft portion and the cylinder is prevented, which is preferable.
  • the high-strength organic fiber is not limited to a specific material as long as it has high mechanical strength such as tensile strength.
  • ultra high molecular weight polyethylene fiber, wholly aromatic polyamide fiber, wholly aromatic polyester fiber, heterocyclic high-performance fiber, polyacetal fiber, etc. are mentioned, and these fibers are used alone or in combination of two or more kinds at an arbitrary ratio.
  • a para-aramid fiber is preferably used as the high-strength organic fiber, and a polyparaphenylene terephthalamide fiber is particularly preferable.
  • the above-mentioned shaft part and cylinder need only be provided with the carbon fiber reinforced resin layer and the high-strength organic fiber reinforced resin layer one layer at a time, or any one or both, and these layers only. It is also possible to configure. However, if the above-mentioned shaft portion is provided with a cylindrical glass fiber reinforced resin layer further inside the innermost high-strength organic fiber reinforced resin layer, the wear resistance of the inner surface can be improved, and this shaft portion and cylinder body Is cut into a predetermined length or the like, so that the organic fibers can be prevented from being loosened on the inner surface of the cut end, and the shape of the cut end can be improved.
  • the outer surface can have good wear resistance, and the shaft portion and When the cylindrical body is cut into a predetermined length or the like, it is possible to prevent the organic fibers from being loosened on the outer surface of the cut end, and it is preferable that the shape of the cut end can be improved.
  • the outermost high-strength organic fiber reinforced resin layer is further outside of the outermost high-strength organic fiber reinforced resin layer to clearly indicate the position and function of the cane from the outside or for decoration.
  • the display layer is preferably provided.
  • the display layer may be a coating film of any color or pattern, but can be easily set to a predetermined color using a reflective tape, a red display tape, etc., and is easy to repair, preferable.
  • the display layer may be exposed on the outer surface of the shaft portion. However, if a cylindrical glass fiber reinforced resin layer or an abrasion-resistant transparent resin layer is provided outside the display layer, these glass fibers The display layer is protected by a reinforced resin layer or an abrasion-resistant transparent resin layer, and the abrasion resistance and water resistance are improved, and color change and falling off from the shaft portion can be prevented.
  • the above-mentioned shaft portion is not limited to a specific cross-sectional shape, and may have an irregular cross-sectional shape, but is more preferably a perfect circular cross-sectional shape.
  • the irregular cross-sectional shape include an oval shape, a hollow shape, an X cross-sectional shape, a Y cross-sectional shape, a T cross-sectional shape, an L cross-sectional shape, a star cross-sectional shape, and a leaf-shaped cross-sectional shape (for example, a three-leaf shape, a four-leaf shape, a five-leaf shape, etc. ), Other polygonal cross-sectional shapes (for example, triangular, quadrangular, pentagonal, hexagonal, etc.).
  • the shaft portion may be solid as long as the effect of the present invention is not hindered, but from the viewpoint of weight reduction of the cane, the shaft portion is formed in a hollow shape and includes a hollow portion and a surrounding outer shell portion. Is preferred.
  • the cross-sectional area ratio between the hollow portion and the outer shell portion is not limited to a specific value as long as the effect of the present invention is not hindered.
  • the cross-sectional area ratio is preferably 85:15 to 56:44 because it has sufficient strength and is light enough to withstand long-term use, and further has excellent safety and repairability. To 80:20 to 60:40, more preferably 75:25 to 62:38.
  • the ratio of the cross-sectional area of the hollow portion with respect to the entire shaft portion is less than 56%, the cane cannot be sufficiently reduced in weight, and the shaft portion becomes too hard and is likely to get tired if used for a long time.
  • the cross-sectional area ratio of the hollow portion with respect to the entire shaft portion exceeds 85%, the cane becomes too light and the strength against the force from the axis orthogonal direction becomes insufficient, which is not preferable.
  • the above cane may be a so-called straight cane that includes a shaft part formed from a single cylinder or the like and cannot be folded. In this case, the connecting part can be omitted, and the shaft part is light. To be preferable.
  • the cane of the present invention may be a so-called foldable cane in which the shaft portion is composed of a plurality of shaft portions. In this case, the cane can be folded compactly when not in use and can be easily carried. Therefore, it is preferable.
  • the above-mentioned shaft portion is composed of a plurality of shaft portions that can be connected and separated from each other, and the first connecting end portion of one shaft portion of the adjacent shaft portions is connected to the first shaft portion of the other shaft portion facing this.
  • the number of shaft portions at this time that is, the number of folding steps, is not limited to a specific value, and is appropriately set to an arbitrary number of steps, such as 5 to 7 steps, based on the length of the cane and the dimensions when carried.
  • said small diameter part may be manufactured separately from the shaft part, may be adhere
  • a well-known thing can be used for the said adhesive agent, It does not specifically limit.
  • the small-diameter portion is not limited to a specific material, but when formed using a high-strength organic fiber reinforced resin layer as used in the shaft portion, the connecting portion between the shaft portions can be reinforced well. It is preferable that it is possible to effectively prevent breakage at the connection portion where the stress is easily applied, and it is more preferable that it is formed using only a high-strength organic fiber reinforced resin layer such as para-aramid fiber.
  • the folding cane includes a cylindrical joint cover that covers the first connection end and the second connection end connected to each other, and the joint cover has one end connected to the first connection end.
  • this joint cover It is preferable because the end can be held tightly and the occurrence of rattling can be suppressed.
  • the form of the grip part is not particularly limited as long as the effect of the present invention is not hindered, and examples thereof include an I-shape and a T-shape.
  • the grip portion may be made of resin, and may be coated with an outer surface using an arbitrary core material. However, a hollow structure is preferable because the weight can be reduced, and a hollow structure core material is used. Also good.
  • the resin material used for the grip portion is not particularly limited as long as the effects of the present invention are not hindered.
  • polyester resin polyamide resin (for example, nylon resin such as nylon 6, 66 nylon, MC nylon, etc.), acrylic, etc.
  • examples thereof include resins, ABS resins, polyolefin resins (for example, polypropylene resins and polyethylene resins), polybutylene terephthalate resins, polyethylene terephthalate resins, and the like, and resins reinforced with fibers may also be used.
  • silicone, nylon, etc. are mentioned as a material used for said core material.
  • the grip part is formed using a carbon fiber reinforced resin or a high-strength organic fiber reinforced resin, such as the same material as the shaft part, for example, it can be provided with high strength while being lightweight, and it can be implemented at low cost. This is preferable.
  • the grip part can be appropriately set in dimensions such as length and diameter as required, and the production method is not particularly limited, and can be produced using a known method, and a commercially available product can also be used.
  • this grip part has a grip body made of a hollow structure extending from the upper end of the shaft part, and the axial orthogonal section of the grip body is larger than the axial orthogonal section of the shaft part.
  • the outer surface of the grip body may be exposed to the outside as it is, or a non-slip shape such as an uneven pattern may be formed on the outer surface.
  • this grip portion is provided with a non-slip member made of a coating layer such as rubber or synthetic resin, or a non-slip member made of a commercially available grip tape or the like on at least a part of the outer surface of the grip body or the like. It is preferable that the user can securely hold the grip portion.
  • the bottom end of the shaft part may be provided with a stone bump.
  • This stone bump is not limited to a specific shape or material, but if it is formed using a high-strength organic fiber reinforced resin in which short fibers made of high-strength organic fibers are dispersed in a synthetic resin material, the usage characteristics In addition to being excellent in wear resistance, it is preferable.
  • the road surface is lightly tapped or traced with the stone stick at the tip of the cane.
  • the stone thrusters react well to the object being explored. For example, when a stone thruster touches the road surface, it behaves as if it jumps lightly. Is different. It is considered that these behaviors and the like are comprehensively influenced by various properties based on the material such as the hardness and density of the stone bump, the elastic modulus, the frictional resistance, and the wear resistance.
  • the cane equipped with this stone thruster can convey not only the obstacles and irregularities on the road surface but also the fine irregularities and texture of the road surface to the user, and the road surface in the traveling direction Since the type and the like can be grasped more accurately, there is an advantage that a visually impaired person can obtain a sense of security greatly and can walk more safely. Moreover, since it responds favorably to the object to be explored, it is possible to reduce the necessity of excessively swinging and striking the cane, thereby reducing the burden on the user's hand and wrist. Furthermore, it is possible to suppress an excessive increase in sound when the object to be explored is hit, and there is an advantage that the operability is excellent. From these points, this cane can exhibit excellent usage characteristics, and is particularly advantageous if it is a white cane used by a visually impaired person, because it can function well as a sensor, and is lighter and more durable. There is also.
  • the high-strength organic fiber occupying the high-strength organic fiber reinforced resin is not limited to a specific blending amount, but if it is too small, the effect of use characteristics and wear resistance is low, and if it is excessive, it is dispersed in the synthetic resin. Is not easy.
  • the blending ratio of the high-strength organic fibers is preferably 10 to 60% by mass, more preferably 20 to 50% by mass.
  • the high-strength organic fiber is not limited to a specific material as long as it has high mechanical strength such as tensile strength.
  • ultra high molecular weight polyethylene fiber, wholly aromatic polyamide fiber, wholly aromatic polyester fiber, heterocyclic high-performance fiber, polyacetal fiber, etc. are mentioned, and these fibers are used alone or in combination of two or more kinds at an arbitrary ratio.
  • para-aramid fiber is preferably used as the high-strength organic fiber, and polyparaphenylene terephthalamide fiber is particularly preferable because it is easily fibrillated and dispersed.
  • the above high-strength organic fibers are dispersed in the synthetic resin material in the state of short fibers.
  • the short fiber is not limited to a specific thickness or length as long as it can be dispersed in the synthetic resin material, but the fineness of the filament is about 1.1 to 2.3 dtex, and the fiber length is 2 to 8 mm. If it is, it is preferable that it can be dispersed well in the synthetic resin material and that the characteristics such as use characteristics and abrasion resistance necessary for the stone bump can be sufficiently exhibited.
  • the above-mentioned synthetic resin is not limited to a specific material as long as it can disperse high-strength organic fibers and can be formed into a stone bump, and is preferably a thermoplastic synthetic resin because it can be easily molded.
  • polyester resin polyamide resin (eg nylon resin such as 6 nylon, 66 nylon, MC nylon, etc.), acrylic resin, ABS resin, polyolefin resin (eg polypropylene resin, polyethylene resin etc.), polybutylene A terephthalate resin, a polyethylene terephthalate resin, etc. are mentioned, However, Since a polyamide resin is excellent in abrasion resistance especially, it is preferable.
  • the shaft portion Since the carbon fiber reinforced resin layer has high rigidity, the shaft portion does not bend or bend when a force is applied in the axial direction, and the user can use the cane with peace of mind. (2) Since the high-strength organic fiber reinforced resin layer having excellent vibration damping characteristics is provided, the vibration of the tip of the cane can be accurately transmitted to the user. (3) Since the lightweight high-strength organic fiber reinforced resin layer and the high-rigidity carbon fiber reinforced resin layer are combined, the shaft portion and the cylinder have high strength, and the high-strength organic fiber reinforced resin layer It is not necessary to make it excessively thick and can be kept light.
  • the high-strength organic fiber reinforced resin layer can be buffered by buckling deformation, and exhibits excellent performance in mechanical strength such as impact resistance.
  • the shaft portion can be favorably prevented from breaking.
  • the carbon fiber reinforced resin layer is protected by a high-strength organic fiber reinforced resin layer integrated on the outer peripheral surface, preventing severe breakage. Is done. Moreover, it is prevented that the broken carbon fiber protrudes in a thorn shape at the portion subjected to the bending impact.
  • a visually handicapped person or the like can safely check a site damaged by the impact by searching for the site.
  • the shaft and the cylinder are not easily broken even if they are subjected to a large bending impact from the direction perpendicular to the axis.
  • a commercially available repair kit can be used at the site where the impact is received. It can be repaired so that the cane can be used continuously.
  • FIG. 1 shows a first embodiment of the present invention
  • FIG. 1 (a) is an external view of a straight cane
  • FIG. 1 (b) is an end view taken along line AA in FIG. 1 (a).
  • It is an external view of a direct cane.
  • It is a partially broken figure which shows the laminated structure of the shaft part of 1st Embodiment.
  • It is a partially broken figure of the grip part of the cane of a 1st embodiment.
  • It is a partially broken perspective view of the cane according to the first embodiment in the vicinity of the stone bump.
  • 6 shows a third embodiment of the present invention, FIG.
  • FIG. 6 (a) is an external view of a folding cane
  • FIG. 6 (b) is an enlarged sectional view of part B of FIG. 6 (a).
  • It is an external view of the cane of the folded state of 3rd Embodiment.
  • It is sectional drawing of the joint cover vicinity before the connection of the cane of 3rd Embodiment.
  • It is sectional drawing of the joint cover vicinity in the connection state of the cane of 3rd Embodiment.
  • It is an external view of the grip part which shows the modification 1 of this invention.
  • It is a fragmentary figure of the stone thrust vicinity which shows the modification 2 of this invention.
  • It is a perspective view showing an emergency repair kit used for repairability measurement.
  • FIG. 16 (a) is a photograph of asphalt pavement
  • FIG. 16 (b) is a photograph of concrete pavement with pebbles on the surface
  • FIG. (c) is a photograph of a concrete pavement formed in a tile shape.
  • the comparison table 2 which shows the result of having measured the use characteristic of the stone hammer of this invention in contrast with the comparative example.
  • the comparison table 3 which shows the result of having measured the abrasion characteristic of the stone hammer of this invention compared with the comparative example.
  • the cane (7) of the first embodiment includes a shaft portion (4), a grip portion (1) provided at the upper end of the shaft portion (4), and a shaft portion ( 4) and a stone bump (6) fixed to the lower end.
  • said shaft part (4) is hollow and formed in the cylinder shape whose axis orthogonal cross section is a perfect circle.
  • the shaft portion (4) includes a cylindrical high-strength organic fiber reinforced resin layer (31), a carbon fiber reinforced resin layer (32), and a glass fiber reinforced resin layer (33).
  • the carbon fiber reinforced resin layer (32) is formed by integrally laminating the first high strength organic fiber reinforced resin layer (31a) on the inner peripheral surface, and the first high strength organic fiber reinforced resin layer.
  • a cylindrical first glass fiber reinforced resin layer (33a) is laminated integrally on the inner peripheral surface of (31a).
  • a second high-strength organic fiber reinforced resin layer (31b) is integrally laminated on the outer peripheral surface of the carbon fiber reinforced resin layer (32), and the second high-strength organic fiber reinforced resin layer (31b) is laminated. ) Is integrally laminated with a cylindrical second glass fiber reinforced resin layer (33b).
  • the second glass fiber reinforced resin layer (33b) is laminated outside the second high-strength organic fiber reinforced resin layer (31b), and a display is provided on the outer peripheral surface thereof.
  • a white reflective tape (15) and a red display tape (16) are attached as the layer (34).
  • the outside of the display layer (34) is covered with an abrasion-resistant transparent resin layer (35).
  • the wear-resistant transparent resin layer (35) is not limited to a specific material as long as it can effectively protect the display layer (34) and has excellent wear resistance and water resistance. .
  • an ionomer resin film such as Himiran (trade name, manufactured by Mitsui DuPont Polychemical Co., Ltd.) or the like is used as a single layer or a plurality of layers.
  • the cross-sectional area ratio between the hollow portion (17) and the surrounding outer shell portion (18) in the axial cross section of the shaft portion (4) is not limited to a specific ratio. In general, it is in the range of 85:15 to 56:44, and more preferably in the range of 80:20 to 60:40. And more preferably within the range of 75:25 to 62:38.
  • the shaft portion (4) is arranged in the direction perpendicular to the axis so that it does not easily break when it receives an impact in the direction perpendicular to the axis.
  • the impact resistance against force is preferably 10 J or more, and more preferably 15 J or more from the viewpoint of superior safety and repairability.
  • This impact resistance is measured by using an Instron falling weight impact tester (product name: falling weight impact tester Dynat (registered trademark) 9200 series), etc. JIS K 7055: 1995 (glass fiber reinforced plastic). Can be measured according to the three-point bending weight test method described in (3).
  • the shaft portion (4) may be a tapered cylindrical body whose outer diameter changes from one end to the other end, but is arbitrary if it is a cylindrical body whose outer diameter does not change from one end to the other end. It is preferable that the above-described shaft portion (4) can be easily manufactured by cutting it into a predetermined dimension.
  • the high-strength organic fiber reinforced resin layer (31) constituting the shaft portion (4) can be manufactured by a known method. That is, for example, a high-strength organic fiber such as a para-aramid fiber is impregnated with a resin such as an epoxy resin and formed into a predetermined cylindrical shape, and this is heated at, for example, room temperature to about 130 ° C. to cure the resin. Then, it is manufactured by cutting to a predetermined length.
  • the carbon fiber reinforced resin layer (32) and the glass fiber reinforced resin layer (33) are also produced in the same manner.
  • the organic fibers constituting the high-strength organic fiber reinforced resin layer (31) are not limited to specific ones.
  • ultrahigh molecular weight polyethylene fibers wholly aromatic polyamide fibers, wholly aromatic polyester fibers, and heterocyclic high-performance fibers. Any one of polyacetal fibers and the like can be used alone or in combination of two or more.
  • Examples of the carbon fibers constituting the carbon fiber reinforced resin layer (32) include polyacrylonitrile-based carbon fibers and pitch-based carbon fibers.
  • Examples of the glass fibers constituting the glass fiber reinforced resin layer (33) include alkali-containing glass fibers, alkali-free glass fibers, and low dielectric glass fibers.
  • the organic fiber, carbon fiber, and glass fiber used in the present invention are not limited to these.
  • the above ultra high molecular weight polyethylene fiber refers to a fiber made of ultra high molecular weight polyethylene resin.
  • the ultrahigh molecular weight polyethylene resin has a molecular weight of about 200,000 or more, preferably about 600,000 or more.
  • lower ⁇ -olefins having about 3 to 10 carbon atoms such as propylene, butene, etc.
  • those containing a copolymer with pentene, hexene and the like are preferable.
  • a copolymer of ethylene and ⁇ -olefin a copolymer in which the latter ratio is about 0.1 to 20 on average per 1000 carbon atoms, preferably about 0.5 to 10 on average is preferable.
  • ultrahigh molecular weight polyethylene fibers are disclosed in, for example, Japanese Patent Application Laid-Open Nos. 55-5228 and 55-107506, and methods known per se may be used.
  • ultra high molecular weight polyethylene fibers commercially available products such as Dyneema (trade name, manufactured by Toyobo Co., Ltd.), Spectra (trade name, manufactured by Honeywell), Hi-Zex Million (trade name, manufactured by Mitsui Chemicals, Inc.) are used. Also good.
  • the above-mentioned wholly aromatic polyamide fiber is not particularly limited, and examples thereof include aramid fiber.
  • aramid fiber a para-aramid fiber is preferable.
  • the para-aramid fiber include polyparaphenylene terephthalamide fiber (manufactured by Toray DuPont Co., Ltd., trade names: Kevlar 29, 49, 149, etc.) or copolyparaphenylene-3,4'-diphenyl ether terephthalamide fiber (Teijin Ltd.)
  • the above-mentioned polyparaphenylene terephthalamide fiber is particularly preferable.
  • Such a wholly aromatic polyamide fiber can be produced by a known or equivalent method, and a commercially available product as described above may be used.
  • the wholly aromatic polyester fiber is not particularly limited.
  • it is a self-condensed polyester of parahydroxybenzoic acid, a polyester composed of terephthalic acid and hydroquinone, or composed of parahydroxybenzoic acid and 6-hydroxy-2-naphthoic acid.
  • examples thereof include fibers made of polyester.
  • the wholly aromatic polyester fiber can be produced by a known method or a method equivalent thereto, and a commercially available product such as Vectran (trade name, manufactured by Kuraray Co., Ltd.) can also be used.
  • the heterocyclic high-performance fiber is not particularly limited, and examples thereof include polyparaphenylene benzobisthiazole (PBZT) fiber and polyparaphenylene benzobisoxazole (PBO) fiber.
  • PBZT polyparaphenylene benzobisthiazole
  • PBO polyparaphenylene benzobisoxazole
  • Heterocyclic high-performance fiber can be produced by a known or equivalent method, and for example, PBO fiber such as XYLON (trade name, manufactured by Toyobo Co., Ltd.) can also be used.
  • the said polyacetal fiber is not specifically limited, It can manufacture by the method according to well-known or it, for example, can also use commercial items, such as tenac (brand name, Asahi Kasei Co., Ltd.), delrin (brand name, DuPont). it can.
  • the resin impregnated in the above-described high-strength organic fiber, carbon fiber, or glass fiber is not particularly limited as long as the effect of the present invention is not hindered.
  • thermosetting such as unsaturated polyester resin and vinyl ester resin. Resin etc. are mentioned.
  • a thermoplastic resin is also mentioned. These resins can be used alone or in admixture of two or more at any ratio.
  • the epoxy resin examples include diglycidyl ether compounds of bisphenol A, bisphenol AD, bisphenol F or bisphenol S or high molecular weight homologues thereof, phenol novolac type polyglycidyl ethers or cresol novolac type polyglycidyl ethers. Furthermore, these halogenated derivatives can also be used. Furthermore, aromatic epoxy resins obtained by reacting phenols such as bisphenol A, bisphenol AD, bisphenol F, and bisphenol S with these glycidyl ethers in the synthesis process may be used. A resin may be used.
  • the epoxy resin is not particularly limited as long as the effect of the present invention is not hindered, and can be obtained by a known production method, and a commercially available product may be used.
  • the unsaturated polyester resin is not particularly limited as long as the effects of the present invention are not hindered, and those produced by known methods can be used, and commercially available products may be used.
  • it can be obtained by a known production method using an alcohol component composed of a polyhydric alcohol, an ⁇ , ⁇ -unsaturated polyvalent carboxylic acid, and an acid component composed of a saturated polyvalent carboxylic acid and an aromatic polyvalent carboxylic acid.
  • the vinyl ester resin is not particularly limited as long as the effects of the present invention are not hindered, and those produced by known methods can be used, and commercially available products may be used.
  • the thermoplastic resin is not particularly limited as long as it does not hinder the effects of the present invention, and is a styrene-based thermoplastic resin, a polyolefin-based thermoplastic resin, a polyvinyl chloride-based thermoplastic resin, a polyurethane-based thermoplastic resin, a polyester-based thermoplastic resin. Any thermoplastic resin such as a resin or a polyimide-based thermoplastic resin may be used, but a polyolefin-based thermoplastic resin is preferable.
  • polystyrene-type thermoplastic resins such as a polypropylene resin, a polystyrene resin, an acrylonitrile butadiene styrene resin (ABS resin), etc. are mentioned.
  • synthetic resins such as ethylene / propylene rubber (EPDM), styrene / butadiene copolymer synthetic rubber (SBR), and nitrile rubber (NBR) can be used.
  • EPDM ethylene / propylene rubber
  • SBR styrene / butadiene copolymer synthetic rubber
  • NBR nitrile rubber
  • the content ratio of the fiber and the resin in each of the above layers is not limited to a specific value as long as the effect of the present invention is not hindered, and varies depending on the type of organic fiber or resin and the molding size, but is lightweight and has sufficient bending rigidity.
  • the weight ratio is set within the range of 80:20 to 60:40 from the viewpoint of ensuring the desired strength and being light enough to withstand long-term use, being hard to break, and having excellent safety and repairability. More preferably, it is set within the range of 75:25 to 65:35, and further preferably within the range of 70:30 to 67:33.
  • the above “appropriate strength” means strength for combining the effects of the present invention.
  • the shaft portion (4) preferably has a specific gravity of about 1.30 to 1.45, although it varies depending on the type of high-strength organic fiber and resin used, the content ratio, and the like. Is more preferable, and 1.33 to 1.36 is particularly preferable.
  • the weight and strength of the cane (7) are the thickness of the cane (7), the thickness of the outer shell (18), and the fiber and resin used in each fiber reinforced resin layer (31, 32, 33). In addition to the ratio and thickness, it varies depending on the type of resin. However, since high-strength organic fibers have a lower specific gravity than carbon fibers, a lighter and stronger cane is achieved by reducing the number of carbon fiber-reinforced resin layers (32) and increasing the number of high-strength organic fiber resin layers (31). (7) is obtained.
  • the specific gravity of the shaft portion (4) is not limited to a specific value, but is preferably 1.30 to 1.45, and sufficient bending with respect to the axial force of the shaft portion (4) is sufficient. It is more preferably 1.32 to 1.37, and particularly preferably 1.33 to 1.36 from the viewpoint of rigidity and light weight enough to withstand long-term use.
  • the grip portion (1) in the first embodiment is formed in an I-shape, and a connecting material (2), a strap (3), and the like are attached to arbitrary portions as necessary.
  • the grip portion (1) may be formed in another shape such as a T-shape.
  • the length and thickness of the grip portion (1) are appropriately set to dimensions that can be securely gripped by the user.
  • the grip portion (1) includes a grip body (19) having a hollow structure extending upward from the upper end of the shaft portion (4).
  • the grip body (19) may be formed integrally with the shaft portion (4) by expanding one end of the shaft portion (4) into a predetermined shape by, for example, blow molding or vacuum forming.
  • the grip body (19) has an axial cross section that is larger than the cross section of the shaft portion (4). Since it has a hollow structure, the grip portion (1) can be easily reduced in weight, and since it is formed using the same fiber reinforced resin material as the shaft portion (4), the grip portion (1) having high strength can be formed. It can be manufactured at low cost.
  • a separate grip portion (1) may be fixed to the upper end of the shaft portion (4) with an adhesive or the like. Moreover, this grip part (1) may coat
  • a commercially available product can be used for these grip portions (1), but they can be manufactured using a known method, and the manufacturing method is not particularly limited, and dimensions such as length and diameter are as required. Set as appropriate.
  • the resin material used for the grip portion (1) is not particularly limited as long as the effect of the present invention is not hindered.
  • polyester resin, polyamide resin (for example, nylon resin such as nylon 6, 66 nylon, MC nylon, etc.) ), Acrylic resin, ABS resin, polyolefin resin (eg, polypropylene resin, polyethylene resin, etc.), polybutylene terephthalate resin, polyethylene terephthalate resin, and the like, and a resin reinforced with fibers may be used.
  • silicone, nylon, etc. are mentioned as a material used for said core material.
  • the outer surface of the grip body (19) may be exposed to the outside as it is.
  • the grip body (19) may be formed in a non-slip shape such as a concavo-convex pattern, or may be provided with a non-slip member (20) as shown in FIG. It is preferable that the user can easily hold the grip portion (1).
  • the non-slip member (20) may be a member to which a synthetic resin such as urethane or a rubber material is attached, for example. Alternatively, these materials may be formed in a tape shape around the grip portion. It may be worn. In particular, it is preferable that a tape-like non-slip member (20) is attached because it can be easily replaced with a new non-slip member (20) when the anti-slip member (20) is damaged due to wear or the like.
  • the above-mentioned stone thrust (6) is attached to the lower end of the shaft portion (4).
  • This stone bump (6) is made of a high strength organic fiber reinforced resin and is formed into a so-called tear drop type (teardrop type) in which the upper half is a truncated cone and the lower half is a spherical surface. is there.
  • a mounting hole (25) is recessed in the upper end of the stone bump (6), and the lower end of the shaft portion (4) is fitted in and fixed to the mounting hole (25).
  • the stone thrust (6) does not come off from the shaft portion (4) during use.
  • the stone bump (6) is externally fitted to the lower end of the shaft portion (4) as described above, so that the lower end portion of the shaft portion (4) can be protected by the stone bump (6).
  • a rod-like mounting portion may be provided on the top of the stone thrust (6), and the mounting portion may be inserted into the lower end of the shaft portion (4) to be fixed.
  • the thickness and the length of the stone bump (6) can be appropriately set within a range not impeding the effects of the present invention.
  • the outer diameter is larger than the outer diameter of the shaft portion (4). It is formed and set to a size that does not easily fit into a lattice of groove covers arranged on the road surface. Further, the outer surface of the stone bump (6) is formed into a smooth curved surface so that it is not easily caught on a stepped portion such as a road surface or a staircase or an obstacle.
  • the high-strength organic fiber reinforced resin forming the above-mentioned stone bump (6) is obtained by dispersing short fibers made of high-strength organic fibers in a synthetic resin material. If the amount of the high-strength organic fiber is too small, the sensor function of the stone bump (6) is not sufficiently exhibited, and if it is excessively large, it is not easy to disperse in the synthetic resin material. For this reason, the ratio of the high-strength organic fiber to the high-strength organic fiber-reinforced resin material is preferably 10 to 60% by mass, more preferably 20 to 50% by mass.
  • the high-strength organic fiber examples include, as described above, the high-strength organic fiber constituting the shaft portion (4), such as ultrahigh molecular weight polyethylene fiber, wholly aromatic polyamide fiber, wholly aromatic polyester fiber, and heterocyclic high-performance fiber. , Polyacetal fibers and the like, and any of them can be used alone or in combination of two or more. Specifically, para-aramid fibers are preferably used, and polyparaphenylene terephthalamide fibers are particularly preferable.
  • the size of the high-strength organic fiber dispersed in the synthetic resin material is different depending on the type of the high-strength organic fiber and the synthetic resin material, but the fineness of the filament is about 1.1 to 2.3 dtex, A fiber length of about 2 to 8 mm is preferable because it can be dispersed well.
  • the synthetic resin material in which the high-strength organic fibers are dispersed may be a thermosetting synthetic resin or the like, but a thermoplastic synthetic resin is preferable because the stone bump (6) can be easily formed into a predetermined shape.
  • the thermoplastic synthetic resin is not limited to a specific material. For example, if it is a polyamide resin such as 6 nylon, 66 nylon, or MC nylon, it is possible to disperse high-strength organic fibers or to mold the stone bump (6). It is preferable because it is easy and has excellent wear resistance.
  • the high-strength organic fiber reinforced resin may be blended with any fiber material such as polyamide fiber in addition to the high-strength organic fiber, and further, wear resistance, durability, light resistance, etc. Any additive, filler, colorant or the like for increasing the viscosity may be added.
  • a cylindrical glass fiber reinforced resin layer (33b) may be laminated on the outside of the display layer (34).
  • the display layer (34) is formed outside the second high-strength organic fiber reinforced resin layer (31b), and the second glass fiber reinforced resin layer (33b) is integrally formed on the outside. It is laminated. Since the second glass fiber reinforced resin layer (33b) is transparent, the display layer (34) is visually observed from the outside, and the second glass fiber reinforced resin layer (33b) Since it is excellent in water resistance, it is possible to prevent the display layer (34) from being worn or peeled off due to water. In addition, unlike the first embodiment described above, the wear-resistant transparent resin layer is not required, so that the cost can be reduced accordingly.
  • the other configuration is the same as that of the first embodiment described above, and functions in the same manner, so that the description thereof is omitted.
  • the straight cane has been described.
  • a folding cane may be used. That is, in the third embodiment, as shown in FIG. 6A, as in the first embodiment, the shaft portion (4), the grip portion (1) provided at the upper end of the shaft portion (4), It has a stone thrust (6) fixed to the lower end of the shaft portion (4).
  • the shaft portion (4) is composed of a plurality of, for example, five shaft portions (14) that can be connected to and separated from each other.
  • a cylindrical joint cover (5) is provided at the connecting portion.
  • said grip part (1) is integrally formed in the extended state at the upper end of the uppermost shaft part (14).
  • the shaft portion (14) is formed in a hollow cylindrical shape having a perfectly perpendicular axis, and as shown in FIG. It comprises a fiber reinforced resin layer (32) and a high-strength organic fiber reinforced resin layer (31) integrally formed on the inner and outer peripheral surfaces thereof, and a glass fiber reinforced resin layer (33) on the outer and inner sides, respectively.
  • a white reflective tape (15) or a red display tape (16) is adhered to the outer peripheral surface of the second glass fiber reinforced resin layer (33b), and the outer side thereof is attached to the wear-resistant transparent resin layer (35 ).
  • the adjacent shaft portion (14) has an inner pipe (9) fixed to the first connecting end (21) of one shaft portion (14) as a small diameter portion.
  • a rubber string (8) connecting the shaft portions (14) to each other is inserted into the inner pipe (9).
  • the protruding length of the inner pipe (9) protruded outward from the first connecting end (21) is not limited to a specific dimension, and the length that allows the shaft portions (14) to be securely connected to each other is not limited. For example, it is set to about 30 to 50 mm.
  • the rubber cord (8) may be elastic or stretchable so that the shaft portions (14) can be easily separated and connected to each other.
  • the material and thickness are not particularly limited, and a known one is used. can do.
  • the inner pipe (9) is formed to have an outer diameter substantially equal to the inner diameter of the shaft portion (14), and is inserted into and removed from the second connecting end portion (22) of the other shaft portion (14) facing each other. It is configured to be possible. In this embodiment, one end of the inner pipe (9) formed separately from the shaft portion (14) is press-fitted into the first connecting end (21) or fixed by a known adhesive or the like. is there. However, in the present invention, the small diameter portion may be formed integrally with the connecting end portion of the shaft portion (14).
  • the inner pipe (9) is not limited to a specific material, but is preferably provided with a high-strength organic fiber reinforced resin layer or glass fiber reinforced resin layer as used in the shaft portion (14), particularly para-aramid fibers. It is more preferable to provide only a high-strength organic fiber reinforced resin layer. However, it is preferable that the carbon fiber reinforced resin layer is not included unlike the shaft portion (14).
  • the joint cover (5) may be a cylindrical shape that can connect the shaft portions (14) to each other, and is not limited to a specific shape. However, this outer surface is preferably a smooth shape that does not catch on other objects, for example, it is formed in a cylindrical shape with a slightly smaller diameter at both ends, and a ring-shaped receiving portion ( 23) is formed.
  • the rubber cord (8) is inserted into the receiving portion (23).
  • the first connecting end (21) is inserted from one end of the joint cover (5) so that the tip is in contact with the receiving portion (23), and firmly fixed by press-fitting or a known adhesive. It is.
  • the other end of the joint cover (5) is opened to face the second connecting end (22), and an insertion portion (24) is formed in this end.
  • the shaft portions (14) are connected to each other, and by removing from the insertion portion (24), the shaft portion (14) They are separated from each other.
  • the insertion portion (24) includes a tapered portion (10) having a small diameter inward from the outer end, and the receiving portion (23) further inward from the inner end of the tapered portion (10). And a straight portion (11) having a predetermined inner diameter extending up to.
  • the inner diameter of the straight portion (11) is set to a dimension that securely tightens the outer peripheral surface of the second connecting end portion (22) without rattling.
  • the length of the joint cover (5) is not limited to a specific dimension, and can be appropriately set within a range that does not hinder the effects of the present invention.
  • the length of the straight portion (11) may be a length that can suppress the occurrence of rattling at the connecting portion, and is not limited to a specific dimension as long as the effect of the present invention is not hindered. If the length is too long, the connecting / separating operation is not easy, so about 20 to 80% of the outer diameter of the shaft portion (4) is usually preferable.
  • the joint cover (5) is manufactured using, for example, polyamide such as nylon 6.
  • the joint cover (5) is not limited to a specific material as long as the connecting portion can be securely held and the effect of the present invention is not hindered.
  • a thermosetting resin such as an epoxy resin, an unsaturated polyester resin, or a vinyl ester resin may be used.
  • a polyester resin or a polyamide resin for example, nylon resin such as nylon 6, 66 nylon, MC nylon, or the like
  • Acrylic resin ABS resin
  • polyolefin resin eg, polypropylene resin, polyethylene resin, etc.
  • thermoplastic resin such as polybutylene terephthalate resin, polyethylene terephthalate resin, etc.
  • materials having rubber elasticity such as synthetic rubber and elastomer May be used.
  • This joint cover (5) can be manufactured by a known method, and a known additive, a pigment or the like may be added as needed at the time of production, and a resin reinforced with fibers may be used. You may color after manufacture.
  • the second connecting end portion (22) When the second connecting end portion (22) is inserted into the insertion portion (24) of the joint cover (5), the second connecting end portion (22) is smoothly formed by the tapered portion (10). The leading end of the second connecting end portion (22) is guided by the receiving portion (23) through the straight portion (11), and is connected as shown in FIG. In this connected state, the outer peripheral surface of the second connecting end portion (22) is fastened by the inner surface of the straight portion (11), and the occurrence of rattling is suppressed.
  • the cane (7) can be used safely by reducing the risk of breakage of the cane (7) due to the stress concentration and the user's fall. Further, since there is no backlash, there is no risk that the connecting end portions will be rubbed and worn at an early stage during the connecting / separating operation, and the durability of the cane (7) can be improved. Furthermore, since the axis
  • the shaft portions (14) may be simply inserted / extracted between the connecting end portions and the small-diameter portion (9) provided on the shaft portions (14).
  • the connecting end portions are formed in a special structure such as a screwing mechanism. Since it is not necessary, it can be manufactured at a low cost with a simple structure, and can be easily connected and disconnected, which is preferable.
  • one end of the joint cover (5) is fixed to the first connecting end (21), and the second connecting end (22) is inserted into the other end. It was comprised so that insertion / extraction was possible.
  • one end portion of the joint cover (5) is fixed to the second connecting end portion (22) of the shaft portion (14) not provided with the small diameter portion, and another shaft having the small diameter portion is provided. You may comprise so that the 1st connection edge part (21) of a part (14) can be inserted / extracted in the other edge part of a joint cover (5).
  • said stone thrust (6) is formed in the standard type which became the cylindrical shape of the smooth aspect of the lower part, and the upper part is smoothly with the outer peripheral surface of a shaft part (4). In order to be continuous, it is formed in a curved surface having a smaller diameter at the upper end.
  • the stone bump (6) is made of high-strength organic fiber reinforced resin, and the lower end of the shaft portion (4) is inserted into the mounting hole (25) recessed at the upper end. The inner fitting is fixed.
  • Other configurations such as the above-described grip portion (1) are the same as those in the first embodiment and operate in the same manner, and thus the description thereof is omitted.
  • FIG. 10 (a) shows a cane (7) having a so-called T-shaped grip portion (1)
  • FIG. 10 (b) shows a cane (7) having an L-shaped grip portion (1).
  • the grip portion (1) is extended at the upper end of the shaft portion (4).
  • the stone bump (6) used in the present invention is not limited to a specific shape as long as the use as a walking stick is not hindered.
  • the standard type stone thruster described above uses a stepped standard type stone thruster (6) having a small upper portion and reduced catching on other objects as in Modification 2 shown in FIG. 11, for example. It is also possible.
  • Example 1 As the high-strength organic fiber, Kevlar K-29 1670 dtx (manufactured by Toray DuPont Co., Ltd.), which is a polyparaphenylene terephthalamide fiber, was used. Using this organic fiber, a UD (unidirectional fiber) sheet having a basis weight of 73 g / m 2 was prepared, and this was impregnated with an epoxy resin by a hot melt method so that the resin content ratio was 67:33, A high-strength organic fiber prepreg having a basis weight of 110 g / m 2 was obtained.
  • Kevlar K-29 1670 dtx manufactured by Toray DuPont Co., Ltd.
  • trading card registered trademark, manufactured by Toray Industries, Inc.
  • This prepreg is a carbon fiber prepreg having a basis weight of 330 g / m 2 by impregnating a UD sheet having a basis weight of 220 g / m 2 with an epoxy resin so that the resin content is 67:33.
  • glass cloth WPA-240D manufactured by Nitto Boseki Co., Ltd.
  • UD sheet with a basis weight of 100 g / m 2 is used as the glass fiber, and an epoxy resin is hot in this glass cloth so that the resin content is 67:33
  • a glass fiber prepreg having a basis weight of 150 g / m 2 was obtained by impregnation by a melt method.
  • one layer of glass fiber prepreg, three layers of high-strength organic fiber prepreg, one layer of carbon fiber prepreg, two layers of high-strength organic fiber prepreg, and one layer of glass fiber prepreg are laminated in order, and the whole is heated and cured, and then a reflective tape is wound around the surface. Further, a 0.06 mm thick high-milan film (product) Name, Mitsui DuPont Polychemical Co., Ltd.) was laminated to cover the above reflective tape, and a cylinder of Example 1 was obtained.
  • Each of the obtained cylindrical bodies had an outer diameter of 12 mm, and the cross-sectional area ratio between the hollow portion and the outer shell portion was 67:33.
  • characteristic values of rigidity (flexibility), impact resistance, safety, and on-site repairability were measured by the following measurement methods.
  • the emergency repair kit (26) includes a pair of semi-cylindrical holding plates (13) as shown in FIG. 12, for example.
  • Example 1 of the present invention the rigidity is superior to that of Comparative Example 2, and when the impact is applied, it is only slightly bent, and the impact resistance against the force from the axis orthogonal direction of the cylinder is excellent.
  • the part subjected to the impact is excellent in safety because the fiber does not protrude like a splinter, and is excellent in repairability on site because it does not break.
  • Example 1 of the present invention includes a glass fiber reinforced resin layer on the inner surface, unlike the above Comparative Example 2 in which all layers are formed of a high-strength organic fiber prepreg, the wear resistance of the inner surface is excellent. For example, even if it is a foldable cane in which a rubber cord is arranged in the shaft portion, there is no possibility that the end portion of the shaft portion will be worn at an early stage by the rubber cord.
  • Example 1 since the wear-resistant transparent resin film is arranged on the outer peripheral surface of the reflective tape wound around the outer surface, the wear resistance of the outer peripheral surface is compared with the conventional product in which this film is omitted. Is remarkably excellent, and the reflective tape can be satisfactorily prevented from being worn. In order to confirm this, the wear resistance of the outer surface was measured by the following measuring method.
  • a cloth file having a width of 25 mm and a length of 300 mm (grain size # 240, manufactured by Noritake Coated Abrasive Co., Ltd.) is used. As shown in FIG. 15, the shaft part (4) is kept horizontal, and the cloth file (36) is placed in a horizontal state in a direction of 90 degrees with respect to the axial direction of the shaft part (4). Further, the shaft portion (4) is disposed across the horizontal direction and the vertical direction so as to be in contact with a quarter portion (90-degree portion) from the upper surface to the vertical surface. A load (37) of 330 g is suspended at the lower end of the vertical portion of the cloth file (36). ) Worn surface.
  • Example 1 of this invention which has arrange
  • a teardrop type stone thruster (6) is attached to the cylindrical body of Example 1 to give Example 2, and the actual road surface shown in FIG.
  • Information transmission and operability were measured as targets, and the bumping property was also measured for unevenness such as anti-skid tools for stairs and grooves on road surfaces.
  • the road surface used for the measurement is asphalt pavement shown in FIG. 16 (a), concrete pavement with pebbles on the surface shown in FIG. 16 (b), and concrete formed in a tile shape shown in FIG. 16 (c).
  • the above stone bump (6) is made of a high-strength organic fiber reinforced resin material and is formed into a teardrop type having a maximum outer diameter of 26.1 mm and a total length of 40.4 mm, and a mounting hole with an inner diameter of 13 mm formed at the upper end.
  • the lower end of the shaft portion (4) having an outer diameter of 12.5 mm was inserted and fixed with an adhesive.
  • the high-strength organic fiber reinforced resin material a material obtained by dispersing short fibers of polyparaphenylene terephthalamide fiber in polyamide resin (nylon 6) was used.
  • the polyparaphenylene terephthalamide fibers used were 1.7 decitex filaments cut to a fiber length of 6 mm, mixed with a polyamide resin and dispersed.
  • the blending ratio of the high-strength organic fiber reinforced resin material was 70% by mass for polyamide resin and 30% by mass for polyparaphenylene terephthalamide fiber.
  • the measurement results of each of the above-mentioned use characteristics while comparing with the conventional cane stab are shown in the measurement result comparison table 2 of FIG.
  • the conventional stone bumps used for comparison were all made of polyamide resin (PA6), the standard type was Comparative Example 3, the teardrop type was Comparative Example 4, and the palm chip type was Comparative Example 5.
  • the palm chip type of Comparative Example 5 is an arrangement in which an elastic member is disposed between the ground contact portion of the stone bump and the shaft portion, as described in, for example, WO 07/058180 pamphlet. Used the thing which has arrange
  • Example 2 As is apparent from the results of the above measurements, in Comparative Examples 3 to 5 described above, none of the road surface types could be easily identified and the information transmission was poor. In Example 2, the above three types of road surfaces could be easily identified, and extremely excellent information transmission performance could be exhibited. That is, in each of Comparative Examples 3 to 5 described above, there is a feeling that the stone bump sticks to the road surface, for example, when writing characters with crayons, and the type of road surface cannot be easily detected. It was. On the other hand, in Example 2 of the present invention, for example, when writing a character with a pencil, the contact with the road surface of the stone bump is light and there is a contact that jumps slightly, and the feeling is clearly different depending on the type of the road surface. .
  • Example 2 of the present invention was able to demonstrate operability superior to Comparative Example 3 and Comparative Example 5 as well as Comparative Example 4. That is, in the comparative example 4, the burden added to a user's hand and neck at the time of operation was large, and it was inferior to operativity. In the comparative example 3 and the comparative example 5, compared with this comparative example 4, the said burden was small and operativity was favorable.
  • the test body used was a high-strength organic fiber reinforced resin material used for the standard type stone thrust adopted in the third embodiment as Example 3.
  • This high-strength organic fiber reinforced resin material is made of polyamide resin (66 nylon) reinforced by blending short fibers of polyparaphenylene terephthalamide fiber as high-strength organic fibers.
  • strength organic fiber with respect to fiber reinforced resin is 30 mass%.
  • a molded article made of a single polypropylene resin (PP) was used as Comparative Example 6
  • a molded article made of a single polyamide resin (Nylon 6) was used as Comparative Example 7.
  • Test specimen Ring (hollow cylindrical shape) -Partner material: SUS304 ring (hollow cylindrical shape), surface roughness adjustment is # 1000 polishing paper finish (0.1 ⁇ m Ra>).
  • Example 3 The test results are as shown in the measurement result comparison table 3 shown in FIG.
  • Comparative Example 6 molded with polypropylene resin wears out early, and Comparative Example 7 molded with polyamide resin has a large wear mass and becomes high temperature due to friction. Has melted.
  • Example 3 of the present invention since high-strength organic fiber reinforced resin was used, steady wear was maintained until the end of the test time, and the wear mass was also slight. Thereby, it was confirmed that the stone bump formed using the high-strength organic fiber reinforced resin of the present invention has excellent wear resistance.
  • the shaft portion and the grip portion are integrally formed. However, in the present invention, they may be formed separately from each other and fixed to each other.
  • the joint cover can be omitted for an arbitrary connecting portion.
  • the joint cover may be provided in the lowermost connecting portion which is easily broken, and the joint cover may be omitted for the other connecting portions.
  • the display layer is formed of a reflective tape or a display tape.
  • the present invention may use other display layers, or may omit these display layers.
  • the cane of the present invention is useful as a cane for sports such as mountain climbing and skiing or normal walking in addition to a white cane for the visually impaired.
  • the cane of the present invention can reduce the physical burden on the user, and is particularly effective for elderly people, young people, and visually impaired people. It is also useful for improving productivity.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Rehabilitation Therapy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pain & Pain Management (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Epidemiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Rehabilitation Tools (AREA)
  • Golf Clubs (AREA)

Abstract

La présente invention concerne une canne qui a une résistance mécanique suffisante avec une excellente résistance à l'impact, qui est très sûre, très durable, très respirante, très rigide tout en étant légère. La canne comporte une partie tige (4) et une partie poignée. La partie tige (4) est composée de couches de résine renforcées de fibres organiques haute résistance (31) et d'une couche de résine renforcée de fibre de carbone (32). Les couches de résine renforcées de fibres organiques haute résistance (31) sont stratifiées intégralement sur la surface circonférentielle extérieure et la surface circonférentielle intérieure de la couche de résine renforcée de fibres de carbone (32). Une couche de résine renforcée de fibres de verre (33a) est située à l'intérieur de la couche de résine renforcée de fibres organiques haute résistance le plus à l'intérieur (31a). Une couche de résine renforcée de fibres de verre (33b) est située à l'extérieur de la couche de résine renforcée de fibres organiques haute résistance le plus à l'extérieur (31b).
PCT/JP2011/074183 2011-02-09 2011-10-20 Canne et corps tubulaire Ceased WO2012108081A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN2011800672639A CN103384482A (zh) 2011-02-09 2011-10-20 手杖及筒体
CA2825701A CA2825701A1 (fr) 2011-02-09 2011-10-20 Canne et corps tubulaire
US13/984,001 US20140041702A1 (en) 2011-02-09 2011-10-20 Cane and Cylindrical Body
KR1020137023312A KR20140047583A (ko) 2011-02-09 2011-10-20 지팡이 및 통체

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2011026414A JP6037599B2 (ja) 2011-02-09 2011-02-09 杖
JP2011-026414 2011-02-09
JP2011213921A JP2013070917A (ja) 2011-09-29 2011-09-29 杖用石突き及び杖
JP2011-213921 2011-09-29

Publications (1)

Publication Number Publication Date
WO2012108081A1 true WO2012108081A1 (fr) 2012-08-16

Family

ID=46638311

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/074183 Ceased WO2012108081A1 (fr) 2011-02-09 2011-10-20 Canne et corps tubulaire

Country Status (6)

Country Link
US (1) US20140041702A1 (fr)
KR (1) KR20140047583A (fr)
CN (1) CN103384482A (fr)
CA (1) CA2825701A1 (fr)
TW (1) TW201233357A (fr)
WO (1) WO2012108081A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113954386A (zh) * 2021-10-14 2022-01-21 亨弗劳恩(江苏)复合材料研发有限公司 一种复合材料部件及其制备装置和方法

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI577367B (zh) * 2015-12-17 2017-04-11 Gigantex Composite Technologiesco Ltd Can be folded crutches
CN106626430A (zh) * 2016-10-08 2017-05-10 深圳市天龙金属制品有限公司 一种轻质复合材料的手持辅助器械及其制作工艺
JP6437510B2 (ja) * 2016-12-19 2018-12-12 株式会社オートネットワーク技術研究所 ワイヤハーネス
CN106723754A (zh) * 2016-12-27 2017-05-31 陕西理工学院 一种高韧性户外登山杖
US20200206599A1 (en) * 2018-12-26 2020-07-02 Darin Mich'l Folding and collapsible snowboard pole mounting system
US10898406B2 (en) * 2019-03-01 2021-01-26 John McAteer Collapsable safety cane with shock absorbing feature
US11369507B2 (en) * 2019-06-10 2022-06-28 Debra Ann Frappier Method and device for positioning a limb
WO2021071391A1 (fr) * 2019-10-10 2021-04-15 Владимир Львович ШЕРСТНЕВ Bâton de sport
CN111840010A (zh) * 2020-07-22 2020-10-30 温州医科大学 一种训练助行器
US20220338457A1 (en) * 2020-10-11 2022-10-27 Wei Zhang Compact Fishing Apparatus
US20220110303A1 (en) * 2020-10-11 2022-04-14 Wei Zhang Apparatus and methods for expanding and collapsing a rod

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0691022A (ja) * 1992-09-10 1994-04-05 Nikko Golf:Kk ゴルフシャフト
JPH11155987A (ja) * 1997-11-28 1999-06-15 Fujikura Rubber Ltd 繊維強化樹脂製ゴルフシャフトおよびその製造方法
JP2001062014A (ja) * 1999-08-25 2001-03-13 Mizuno Corp ゴルフシャフト
JP2003250930A (ja) * 2002-03-04 2003-09-09 Kizaki:Kk 歩行補助用ポール
JP2004141548A (ja) * 2002-10-28 2004-05-20 Sumitomo Rubber Ind Ltd 杖
JP2005218473A (ja) * 2004-02-03 2005-08-18 Nitto Boseki Co Ltd 杖
JP2007029331A (ja) * 2005-07-26 2007-02-08 Lapacho Japan:Kk ゴルフクラブ用シャフト、その製造方法およびゴルフクラブ
WO2007058180A1 (fr) * 2005-11-15 2007-05-24 Take's Corporation Virole de canne pour aveugle
JP2011255155A (ja) * 2010-05-13 2011-12-22 Kosuge:Kk 杖と杖用ジョイントカバー

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1967355A (en) * 1931-04-08 1934-07-24 Kyle P Edwards Collapsible golf shaft
US4864763A (en) * 1986-10-24 1989-09-12 Peikin Aaron J Temperature measurement apparatus for use in recreational and sporting activities
US5271640A (en) * 1992-05-29 1993-12-21 Patrick Potochick Lighted ski pole
US5495867A (en) * 1993-11-16 1996-03-05 Momentum Medical Corp. Dual handled cane
JP3235964B2 (ja) * 1996-06-14 2001-12-04 ダイワ精工株式会社 管状体
JPH1024075A (ja) * 1996-07-12 1998-01-27 Maeda:Kk 棒状つえ
JP2000238140A (ja) * 1999-02-17 2000-09-05 Toray Ind Inc Ｆｒｐ筒状体およびその製造方法
USH2138H1 (en) * 2001-02-08 2006-01-03 The United State Of America As Represented By The Secretary Of The Air Force Custom fit carbon fiber composite forearm crutch
CN2868352Y (zh) * 2005-11-09 2007-02-14 李明贤 球杆改良结构
DE102007035754B4 (de) * 2007-07-27 2009-04-30 Paul Muhr Zerlegbarer Stock
US8006711B2 (en) * 2009-01-05 2011-08-30 Easton Technical Products, Inc. Trekking pole clamp and methods
CN201509741U (zh) * 2009-09-01 2010-06-23 高雄 一种新型拐杖
CN101913270B (zh) * 2010-07-23 2012-11-21 哈尔滨工业大学 一种可折叠-展开的形状记忆支撑管及其制备方法

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0691022A (ja) * 1992-09-10 1994-04-05 Nikko Golf:Kk ゴルフシャフト
JPH11155987A (ja) * 1997-11-28 1999-06-15 Fujikura Rubber Ltd 繊維強化樹脂製ゴルフシャフトおよびその製造方法
JP2001062014A (ja) * 1999-08-25 2001-03-13 Mizuno Corp ゴルフシャフト
JP2003250930A (ja) * 2002-03-04 2003-09-09 Kizaki:Kk 歩行補助用ポール
JP2004141548A (ja) * 2002-10-28 2004-05-20 Sumitomo Rubber Ind Ltd 杖
JP2005218473A (ja) * 2004-02-03 2005-08-18 Nitto Boseki Co Ltd 杖
JP2007029331A (ja) * 2005-07-26 2007-02-08 Lapacho Japan:Kk ゴルフクラブ用シャフト、その製造方法およびゴルフクラブ
WO2007058180A1 (fr) * 2005-11-15 2007-05-24 Take's Corporation Virole de canne pour aveugle
JP2011255155A (ja) * 2010-05-13 2011-12-22 Kosuge:Kk 杖と杖用ジョイントカバー

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113954386A (zh) * 2021-10-14 2022-01-21 亨弗劳恩(江苏)复合材料研发有限公司 一种复合材料部件及其制备装置和方法

Also Published As

Publication number Publication date
KR20140047583A (ko) 2014-04-22
CA2825701A1 (fr) 2012-08-16
US20140041702A1 (en) 2014-02-13
TW201233357A (en) 2012-08-16
CN103384482A (zh) 2013-11-06

Similar Documents

Publication Publication Date Title
WO2012108081A1 (fr) Canne et corps tubulaire
US7052419B2 (en) Ball bat
CA2852586C (fr) Batte comprenant une partie renforcee a faible resistance visant a empecher une modification du corps
US7699725B2 (en) Layered composite material bat
US20160184678A1 (en) Sports paddle and method of manufacture
CA2642520C (fr) Appareil pour baton de hockey pour l'entrainement au maniement du baton et methodes d'entrainement du maniement du baton
US20050215363A1 (en) Shaft for a hockey stick and method of fabrication
US9238163B2 (en) Ball bat including a fiber composite component having high angle discontinuous fibers
GB2252053A (en) Golf club shaft
US20110224031A1 (en) Multi-material composite locking upright
US9956464B2 (en) Ball bat barrel with luminescent interior
US6736733B2 (en) On billiard cue
JP6037599B2 (ja) 杖
JP3189658U (ja) 杖
JP2011255155A (ja) 杖と杖用ジョイントカバー
EP2762205B1 (fr) Cadre de raquette
US11406879B2 (en) Golf club
US20170203139A1 (en) Jump rope assembly
US20150126309A1 (en) Hockey stick or other sports implement
KR102585076B1 (ko) 셔틀콕 및 셔틀콕 제조 방법
JP2013070917A (ja) 杖用石突き及び杖
JP2007307169A (ja) ゴルフクラブシャフト
US10702753B2 (en) Strengthening ball bats and other composite structures with nano-additives
JP2706313B2 (ja) スティック
JP4737360B2 (ja) ラケットフレーム

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11858019

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2825701

Country of ref document: CA

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 20137023312

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 13984001

Country of ref document: US

122 Ep: pct application non-entry in european phase

Ref document number: 11858019

Country of ref document: EP

Kind code of ref document: A1