TW201233357A - Walking stick - Google Patents

Abstract

This invention provides a walking stick (cane) which exhibits sufficient strength against impacts, as well as excellent safety, durability, repairability, and rigidity; it is also light. The walking stick has a shaft portion (4) and a grip portion (1). The shaft portion (4) has high-strength organic fibre reinforced resin layers (31) and a carbon fibre reinforced resin layer (32). The high strength organic fibre reinforced resin layers (31) are laminated integrally on an outer peripheral surface and an inner periphered surface of the high strength organic fibre reinforced resin layer (32). A glass fibre reinforced resin layer (33a) is provided on a futher inner side of the innermost high strength organic fibre reinforced resin layer (31a), and another glass fibre reinforced resin layer (33b) is provided on a further outer side of the outermost high strength organic fibre reinforced resin layer (31b).

Description

201233357 VI. Description of the Invention: [Technical Field] The present invention relates to a cane such as a white cane for a visually impaired person, and more specifically: ' relates to a force in a direction orthogonal to an axis from a main shaft portion: There is a good impact resistance reduction, in addition to safety, durability, and maintainability, the amount is also lighter than the crutches. [Prior Art] In addition to = the crutches are also known as walking sticks (WalkingStiCk) or grips (_), r ^, elderly people and other inconvenient people, the average person is climbing or :; distance = etc. will also be used. Such a cane usually has a handle which is held by the user at the upper end of the spindle C, and a plurality of attached shoes. These conventional crutches are formed in the structure. In the case of a material such as a wooden or a pure alloy, the so-called white cane, which is slightly thicker from the ground, is often used for a long period of time, and it is preferable to use it lightly. The weight of the wooden cane 4 is heavy, and there will be a user's negative because of the change of the environment. t:: The crutches have problems in strength. 'It will also be curved or table,,,,,,: 夂 膨 及 及 and dry, and A curved wooden problem is generated in the main shaft portion. Moreover, the crutches made of the aforementioned alloys are heavier than ..., and they are lighter in weight, but there are still problems of being sunken or bent due to impact under long-term use. On the main side, recently, a kind of carbon fiber reinforced resin material has been used to make a scepter. With such a spindle portion 4 323601

S 201233357 ‘ The crutches are lighter than the conventional crutches made of wood or aluminum alloy, eliminating the problem of bending or corrosion. However, although the cane described in the above-mentioned Patent Document 1 is lighter than a conventional cane such as a wooden or an aluminum alloy, it is not particularly difficult for a visually impaired person or the like to be used for a long time. Further weight reduction is still needed. Further, since the carbon fiber reinforced resin material constitutes the cane of the main shaft portion, the carbon fiber has a high tensile strength and a high modulus of elasticity. Therefore, if it is applied to, for example, a golf club, it becomes a crutches having a high bending modulus. However, since the carbon fiber has a small ductility and is an inorganic fiber, it has no flexibility, and therefore has a drawback that it is easily broken by a collision (bending impact) from the lateral direction of the main shaft portion. Therefore, the mechanical strength of the golf club as a hit is very sufficient. However, when a crutches of carbon fiber are used, in order to check the condition of the walking road or the obstacle, there is a work of frequently hitting the pedestrian road or the obstacle, and therefore the tapping is presumed. The impact force is transmitted to the main shaft portion through the tip, and minute cracks (cracks) are generated in the carbon fiber. Therefore, when a force is applied to the crutches due to contact with a person, a bicycle, or other obstacles, the portion where the crack is generated may be easily broken. Thus, it has been desired to develop a crutches which have sufficient strength (bending rigidity) even when there is a lateral force application orthogonal to the axis of the main shaft portion. Further, the crutches of the main shaft portion formed of the carbon fiber reinforced resin material are severely damaged in cross section when they are broken by impact or the like, and the ends of the hard fibers may protrude from the fracture surface like a spike. As 5 323601 201233357 = If the visually impaired person must manually confirm the position of the (4) and the degree of damage: there is a fiber that is exposed from the fracture surface to stab the user's hand. Because: The second = crutches are not easy to break even if they are hit by impact, etc., there is a need to increase and countermeasures, but this will increase the weight of the crutches. S. Because the fractures will be seriously damaged, there are also differences: Maintenance and repair problems, _ expect to develop a cane for easy maintenance. In order to solve the above problems, it is conceivable to form the above-mentioned main shaft portion by using high-strength aroma = grease composed of, for example, a para-type polyamide fiber and an epoxy resin. However, the ancient secret priest t reeds secret open; the mouth of the ancient cylinder, ', the strength of the organic fiber reinforced resin I into the bee (four) 'although the impact resistance is good, but compared to the case of the reinforced resin' The rigidity will decrease. In order to eliminate this problem, when the thickness of the strength-strength organic fiber-reinforced resin layer is increased to increase the rigidity, the main shaft portion becomes thicker or the amount of the resin is increased to cause the crutches to be excessively heavy. (Prior Art Document) (Patent Document) Patent Document 1: JP-A-2005-218473 (Summary of the Invention) The problem to be solved by the present invention is to solve the above problem and provide a The force in the direction in which the axes of the main shaft portions are orthogonal has a sufficient strength to be excellent in impact resistance. In addition to good safety, durability, and maintainability, the weight is also light and the crutches having high rigidity are provided. 323601

S 6 201233357 (Means for Solving the Problems) In order to solve the above problems, the present invention is constructed as follows, based on, for example, Figs. 1 to 18 showing the embodiment of the present invention. That is, the present invention relates to a crutches which are a crutches having a main shaft portion (4) and a shank portion (1) provided at an upper end portion of the main shaft portion (4), characterized in that the main shaft portion (4) has high strength. The organic fiber-reinforced resin layer (31) and the carbon fiber-reinforced resin layer (32), wherein the carbon fiber-reinforced resin layer (32) has the high-strength organic fiber-reinforced resin layer (31) formed on at least one outer layer of the outer peripheral surface thereof. Further, the crutches according to the second aspect of the present invention are a cylindrical body, and include 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) has at least a volume layer on its outer peripheral surface. There is the above high strength organic fiber reinforced resin layer (31). The organic fiber constituting the high-strength organic fiber reinforced resin layer is light in weight and has high tensile strength, and has a longer elongation than inorganic fibers such as carbon fibers. Therefore, even if the ground is hit with the tip of a cane, for example, it is not necessary to worry about The impact causes tiny cracks in the organic fibers. Further, even if the main shaft portion or the cylindrical body is subjected to impact (bending impact) from the direction orthogonal to the axis, the high-strength organic fiber-reinforced resin layer is not broken and becomes curved, and the impact can be buffered. Since the carbon fiber reinforced resin layer provided in the main shaft portion or the cylindrical body has a higher elastic modulus than the organic fiber, the carbon fiber reinforced resin layer has high rigidity and does not need to excessively increase the thickness of the high-strength organic fiber reinforced resin layer. 7 323601 201233357 Although the above-mentioned carbon fiber is easily broken by the bending impact, since the carbon fiber reinforced resin layer has a high-strength organic fiber reinforced resin layer on one outer layer of the outer peripheral surface thereof, even if the main shaft portion or the cylindrical body is subjected to impact from the axis orthogonal direction, carbon fiber Temporary damage, as long as the carbon fiber reinforced resin layer is protected by the high-strength organic fiber reinforced resin layer, the main shaft portion or the cylindrical body is bent and deformed, thereby preventing severe fracture and preventing the broken carbon fiber from protruding into a spike shape. Further, the crutches which are bent and deformed such as the main shaft portion can be easily repaired using, for example, a commercially available service tool or the like. The carbon fiber-reinforced resin layer may have a high-strength organic fiber-reinforced resin layer in a volume layer at least on the outer peripheral surface. However, if the high-strength organic fiber-reinforced resin layer is formed in a volume layer on each of the outer peripheral surface and the inner peripheral surface, the carbon fiber-reinforced resin layer is formed. Since the carbon fiber-reinforced resin layer is sandwiched between the inner and outer high-strength organic fiber-reinforced resin layers, it is preferable that these high-strength organic fiber-reinforced resin layers can be more effectively protected from breakage of the main shaft portion or the cylindrical body. The high-strength organic fiber is not limited to a specific material as long as it is an organic fiber having a high mechanical strength such as tensile strength. For example, it may be an ultrahigh molecular weight polyethylene fiber, a wholly aromatic polyamide fiber, a wholly aromatic polyester fiber, a heterocyclic high performance fiber, a polyacetal fiber, or the like, and these fibers may be used singly or in combination of two or more kinds. The proportions are mixed to use. The high-strength organic fiber is particularly preferably, for example, a para-type aromatic polyamide fiber, and particularly preferably a p 1 yparapheny 1 ene terephthamide fiber. The main shaft portion or the cylindrical body is provided with one or a plurality of layers of the carbon fiber reinforced resin layer and the high strength organic fiber reinforced resin layer or 8 323601

S 201233357 Both sides can be used, or they can be composed only of these layers. However, if the main shaft portion has a tubular glass fiber reinforced resin layer on the inner side of the innermost high-strength organic fiber reinforced resin layer, the wear resistance of the inner surface can be improved, and the spindle portion or the tube can also be used. When the body is cut into a predetermined length or the like, the organic fiber is prevented from being scattered on the inner surface of the cut end portion, and the shape of the cut end portion can be favorably formed, which is preferable. In addition, even when the tubular portion is provided with a tubular glass fiber reinforced resin layer on the outer side of the outermost high-strength organic fiber reinforced resin layer, the wear resistance of the outer surface can be improved, and the spindle can be used. When the portion or the cylindrical body is cut into a predetermined length or the like, the organic fiber is prevented from being scattered on the outer surface of the cut end portion, and the shape of the cut end portion can be favorably formed, which is preferable. The main shaft portion is preferably provided with a display layer on the outer side of the outermost high-strength organic fiber reinforced resin layer in order to clearly display the position and function of the crutches from the outside, or for decorative purposes, for example, when the main shaft portion is used. The display layer may be a coating film of any color or pattern. However, if a reflective tape or a red display tape or the like is used, it can be easily set to a predetermined color or the like, and maintenance or the like is easy. The display layer may be exposed on the outer surface of the main shaft portion. However, if a tubular glass fiber reinforced resin layer or a wear-resistant transparent resin layer is provided on the outer side of the display layer, the display layer receives the glass fiber reinforced resin layer. Or the protection of the abrasion-resistant transparent resin layer, the fuel wear and the water-saving property are improved, and the color change or the falling off from the main shaft portion can be prevented, which is quite desirable. The main shaft portion is not limited to a specific cross-sectional shape, and may have a profiled shape, but is preferably a perfect circular cross-section. The profiled profile may be, for example, an ellipse 9 323601 201233357, a hollow shape, an x-profile, a γ-section star-shaped profile, or a leaf-shaped profile (eg, a three-leaf shape, a [profile, shape, etc.), or other polygonal profile. Shape (/four thin, five-leaf, hexagon, etc.) and so on. - the angular portion, the square shape, and the pentagonal portion of the main shaft portion are not affected by the effect of the present invention, but it is solid from the viewpoint of weight reduction of the crutches and is composed of the hollow portion and the outer casing portion around it: forming a hollow 'and =, the above-mentioned hollow portion and the aforementioned force have sufficient strength, and the ratio of the cross-sectional area is 85:15 to 5fi · ^, which is better and safer. Sex and maintainability point of view, to 60. 40 is better, with 75: 25 to 62: 38 is especially good. If the second. When the ratio of the cross-sectional area of P to the entire recording portion is less than 5 (10), it is not possible to reduce the weight sufficiently, and the filament portion may become too hard. As long as the $ is tired for a long time, it is not ideal. In other respects, if the hollow portion is relatively When the sectional area ratio of the entire main axis β exceeds 85%, the crutches become too light, and the strength of the force from the direction orthogonal to the axis is insufficient, which is not preferable. The above-mentioned crutches may be a so-called straight crutches which are provided with a main shaft portion formed of a single cylinder or the like and which cannot be folded. In this case, the connection portion or the like can be omitted, and the main shaft portion can be made lighter. However, the crutches of the present invention may be a so-called folding crutches in which the main shaft portions are constituted by a plurality of main wheel portions, in which case the crutches are folded and miniaturized when not in use, and can be easily carried, since 10 323601

201233357 This is quite ideal. In other words, the main shaft portion is constituted by a plurality of main shaft portions that are connectable and detachable from each other, and the first connecting material of the square main shaft portions adjacent to each other is provided at the opposite end of the _ junction end portion. The folding cane can be formed by a small diameter portion inserted/extracted into the second connecting end portion of one of the main shaft portions. The number of the main thin portions at this time, that is, the number of folded segments is not limited to the number of the legs, but may be appropriately set to, for example, 5 to 7 segments, depending on the length of the cane and the size at the time of carrying. Further, the small-diameter portion may be separately manufactured from the main shaft portion, and the contiguous portion of the recording portion may be used by the adhesive = 'disambiguation-(four). The well-known adhesive can be used as the riding adhesive, and is not particularly limited. The spindle Ϊ = = ί is not limited to a specific material, but it is preferable to use a joint portion of the above-mentioned good-wire portions as described above, and it is preferable to break the joint portion which is easy to apply, in particular, the height of the bis-amine metal fiber or the like is high. It is more desirable to form strong organic fibers. w赝赝社社=Folding cane has a tubular mask for covering the first and second connecting ends that are connected to each other, and the second connecting end and the second connecting end are卜队口=The end of the knot can be inside the other end; when the cover is inserted/extracted, when the main wheel parts are connected to each other, the end of the == part is tightly held, and the hood is generated 323601 11 201233357 The shape of the handle portion is not particularly limited as long as the effect of the present invention is not impaired, and examples thereof include an I-shape and a τ-shape. The handle portion may be made of a resin, or any core material may be used, and the outer side may be covered with a resin. However, if it is a hollow structure, it is preferable to be lightweight, and a core material having a hollow structure may be used. Further, the resin material used for the handle is not particularly limited as long as it does not impair the effects of the present invention, and may be, for example, a polyester resin or a polyamide resin (for example, a nylon resin such as nylon 6, 66 nylon, or MC nylon). Etc.), acrylic resin, ABS resin, polyolefin resin (such as polypropylene resin, polyethylene resin, etc.), polybutylene terephthalate resin, polyethylene terephthalate resin, etc., can also be used Fiber reinforced resin. Further, the material used for the core material may be silicone, nylon or the like. In particular, when the shank is formed using, for example, a carbon fiber reinforced resin or a high-strength organic fiber reinforced resin having the same material as the above-described main shaft portion, it is not only lightweight, but also has high strength, and can be preferably inexpensively implemented. The size of the shank, such as the length or the diameter thereof, can be appropriately set as needed, and the production method is not particularly limited, and it can be produced by a known method, and a commercially available product can also be used. However, the shank has a shank main body formed by a hollow structure extending from an upper end of the main shaft portion, and if the tangential cross section of the shank main body is larger than an orthogonal cross section of the main shaft portion, a user can be formed. It is indeed the thickness of the grip, and it is light and ideal. Further, the outer surface of the shank main body may be directly exposed to the outside, and a shape such as a embossing pattern may be formed on the outer surface thereof. However, if the handle is on the outer surface of the handle body or the like to 12 323601

S 201233357 A small-partially formed anti-slip member composed of a coating layer such as rubber or synthetic resin, or a non-slip member made of commercially available non-slip tape, etc., the user can surely hold the handle Department, quite ideal. A pointed end may be provided at the lower end of the main shaft portion. Although the tip is not limited to a specific shape or material, if a high-strength organic fiber reinforced resin in which short fibers composed of high-strength organic fibers are dispersed in a synthetic resin material is used, it is not only excellent in use characteristics, The wear resistance is also very good, ideal. Tian blade, that is, has the use

...a, one heart eclipsed the pointed cane of the fiber-reinforced resin of the pageless machine, so that when the bribe came to walk, if the front end of the crutches tapped or traced the road to probe, the pointed head was to be explored. The object ^ responds well. For example, the tip and the road surface will be slightly bounced. 'The degree of rebound or the sound of the tapping, the feeling of the surface, etc., etc., depending on the type of pavement such as asphalt paving and concrete laying. These actions can be said to be based on the hardness or density of various materials, the elastic modulus, the frictional resistance, and the wear resistance. However, the crutches with the pointed end are not only obstacles or I on the road surface, but also The road _ fine unevenness and texture are conveyed sharply to the type of the road surface that uses the ❹ to correctly grasp the traveling direction. Therefore, it is advantageous to obtain a large sense of security and to walk safely. Moreover, the object to be probed will respond well, so that the necessity of tilting the crutches by the j-swing can be reduced, and there is an advantage that it can be applied to the hand or the wrist. Furthermore, it is possible to suppress the sound of the tapping of the 323601 13 201233357 elephant from becoming too large and having the advantage of being operability. From these points of view, the crutches can exert good use characteristics, especially if the white cane used by the visually impaired person can function well as a sensor, which is ideal, light weight and durable. advantage. The high-strength organic fiber occupied by the above-mentioned horse strength organic fiber reinforced resin is not limited to a specific compounding amount. However, if it is too small, the effects of use characteristics and abrasion resistance are inferior, and if it is too large, it is not easily dispersed in the synthetic resin. Therefore, the blending ratio of the high-strength organic fibers is preferably from 10 to 6 % by mass, more preferably from 20 to 50% by mass. The high-strength organic fiber is not limited to a specific material as long as it is a high-strength organic fiber such as tensile strength. For example, it may be an ultrahigh molecular weight polyethylene fiber, a wholly aromatic polyamide fiber, a wholly aromatic polyfluorene fiber, a heterocyclic high performance fiber, a polymylon fiber, or the like, and these fibers may be used singly or in combination of two or more kinds. The proportions are mixed to use. In particular, the high-strength organic fiber is preferably made of, for example, a para-type polyarylene fiber, wherein the poly-p-phenylene group is easily fibrillated and easily dispersed, so that it is particularly desirable. . The above-mentioned two-strength organic fiber is dispersed in the state of short fibers in the state of the short fibers. The H fibers are not limited to a specific thickness or length as long as they are dispersible in the synthetic resin material, but if the filaments are in the range of 1.1 to Udtex In the left and right, the fiber length is about 2 to 8 Å, and the product is well dispersed in the synthetic resin material, and the properties such as the use characteristics and the abrasion resistance required for the tip can be sufficiently exhibited. The synthetic resin is not particularly limited to a specific material as long as it can disperse high-strength organic fibers, and can be formed into a pointed shape. However, it is preferable because it is a thermoplastic synthetic resin. Specifically, it may be, for example, a poly-resin resin, a polyamide resin (for example, a nylon resin such as 6 nylon, 66 nylon, or MC nylon), an acrylic resin, an ABS resin, or a polyolefin resin (for example, a polyene resin, polyethylene). A resin or the like, a polybutylene terephthalate, or a polyethylene terephthalate resin, and the like, but particularly preferably a polyamine resin which is particularly excellent in abrasion resistance. (Effect of the Invention) The invention is constructed and acted as described above, and thus has the following effects. Q> Since the carbon fiber reinforced resin layer has high rigidity, the force of the 愔 and u u are in the axial direction. The main shaft portion is not bent or bent, and the user uses the turning pole. The use of the test can be made with the high-strength resin 良好 & the door difficulty organic fiber q ′ with good vibration damping characteristics, so that the vibration of the front end of the cane can be surely valued.得连里使(3) Due to the combination of a lightweight high-strength organic fiber and a high-strength, reinforced resin layer, the phantom fiber reinforced resin layer, the spindle portion 岑衿μ _ degrees, not + 4 with the same body Degree; and; by increasing the dimension of the reinforced tree wall layer, because of the high-strength organic fiber reinforced resin layer, even if the other end of the knife hits the ground or obstacles, etc., it is not necessary to expand the high-powered vocal, code, due to impact s No machine fiber produces tiny cracks, so it is resistant to people's health. 0 Organic heart 吏 A large bending impact from the axis orthogonal direction, because the high-strength multi-dimensional reinforced resin layer will bend and deform, so it can buffer the production. Strike, 323601 15 201233357 It is possible to exhibit excellent mechanical strength such as impact resistance and to prevent breakage of the main shaft portion. (6) The carbon fiber reinforced resin layer is protected by a high-strength organic fiber reinforced resin layer integrated on the outer peripheral surface, even if it is subjected to a large bending impact in the direction orthogonal to the axis, and the carbon fiber reinforced resin layer is prevented from being severely broken. Further, in the portion where the above-mentioned bending impact is owed, the broken carbon fiber can be prevented from protruding into a sharp shape. As a result, for example, a visually impaired person or the like can safely recognize a portion damaged by the impact by a method such as groping. (7) - The main shaft portion or the cylindrical body is subjected to a large bending collision from the direction orthogonal to the axis, for example, = easy to break, and therefore, for example, at the site where the impact is applied, a rod or the like can be used. The repair tool or the like sold is simply repaired, whereby the turn can be continued. [Embodiment] Hereinafter, the present invention will be specifically described based on the drawings. As shown in Fig. 1(a), the crutches (7) of the first embodiment have a main shaft portion (4) and t > a handle portion (1) which is slid at the upper end portion of the main shaft portion (4), and a fixing portion. A pointed end (6) at the lower end of the main shaft portion (4). ^1 (b), the main shaft portion (4) is a cylindrical shape in which a hollow surface is formed and the surface is positively rounded. As shown in Fig. 2, the main shaft portion (4) includes a 'strength strength organic fiber reinforced resin layer (31), a carbon fiber reinforced resin layer (321 v ' and a glass fiber reinforced resin layer (33). The resin layer (32) has a first high-strength organic fiber-reinforced resin layer (31a) integrally formed on the inner peripheral surface thereof, and a volume layer of the inner peripheral surface of the j-th strength green fiber-reinforced resin layer (31a) has 16 323601

201233357 A cylindrical first glass fiber reinforced resin layer (33a). Further, a second high-strength organic fiber-reinforced resin layer (31b) is formed on the outer peripheral surface of the carbon fiber-reinforced resin layer (32), and a volume layer is provided on the outer peripheral surface of the second high-strength organic fiber-reinforced resin layer (31b). A tubular second glass fiber reinforced resin layer (33b). As shown in Fig. 1 and Fig. 2, the second glass fiber reinforced resin layer (33b) is laminated on the outer side of the second high-strength organic fiber reinforced resin layer (31b), and white reflection is adhered to the outer peripheral surface thereof. A tape (π) or a red display tape (16) is used as the display layer (34). Further, the outer side of the display layer (34) is covered with an abrasion-resistant transparent resin layer (35). The wear resistant transparent tree layer (35) effectively protects the display layer (34). As long as the wear resistance and water resistance are good, it is not limited to a specific material. Specifically, a film made of an ionic polymer resin such as a product name of Himilar K, manufactured by Mitsui & DuPont Chemical Co., Ltd., or the like can be used in a single layer or a plurality of layers. The ratio of the area ratio of the hollow portion in the axial cross section of the main shaft portion (4) to the surrounding outer casing portion (18) (4) is not a specific ratio, but has sufficient strength and rigidity for the force from the direction orthogonal to the axial direction. 'And for the lightweight view that can be forbidden for a long time, it is usually set in the range of 85:15 to 56:44, more preferably 8Q:2〇 to 60:40, especially 75:25 to 62:38. In order to strike the crutches (7), for example, in the case where the bicycle hits the crutches (7), the brothers and sisters are not easily broken in the direction of the impact, and the impact resistance against the orthogonal direction is The impact energy absorption of the above 323601 17 201233357 is better, and from the viewpoint of better safety and maintainability, it is preferably 15J or more. In addition, the impact resistance can be obtained by Instron's drop hammer impact tester (product name; drop hammer type impact tester ^仙1: 叩 (registered trademark) 9200 series), etc., and 151 (7055) : measured by the three-point bending drop test method described in 1995 (bending test method for glass fiber reinforced plastics). The main shaft portion (4) may be a heterogeneous cylinder in which the outer diameter is changed from one end to the other end. However, in the case of a cylindrical body whose outer diameter does not change from one end to the other end, it is preferable to form the above-described main shaft portion (4) by cutting it into a predetermined size, and it is preferable to form the above-mentioned main shaft portion ( The high-strength organic fiber reinforced resin layer (31) of 4) can be produced by a well-known method, that is, by immersing a resin such as an epoxy resin in a high-strength organic substance such as a para-polyamide fiber. The fiber is formed into a predetermined cylindrical shape, and is heated, for example, at room temperature to about 130 ° C to cure the resin, and then cut into a predetermined length to produce the carbon fiber reinforced resin layer (32) and the glass fiber. Strong The resin layer (33) can also be produced in the same manner. The organic fiber constituting the above-mentioned surface strength organic fiber reinforced resin layer (31) is not limited to a specific fiber, and for example, ultrahigh molecular weight polyethylene fiber, aromatic aromatic fluorene can be used. Any one of the amine fiber, the wholly aromatic polyester fiber, the heterocyclic high-performance fiber, and the fiber may be used singly or in combination of two or more. The carbon fiber constituting the carbon fiber reinforced resin layer (32) may be, for example, The polyacrylonitrile-based carbon fiber, the pitch-based carbon fiber, etc. Further, the glass fiber constituting the glass fiber reinforced resin layer (3 3 ) may be, for example, an alkali-containing glass fiber, an alkali-free glass fiber, or a low dielectric glass fiber. However, the organic fibers, carbon fibers, and glass fibers used in the present invention are not limited thereto. The ultrahigh molecular weight polyethylene fibers are fibers composed of ultrahigh molecular weight polyethylene resins. Here, ultrahigh molecular weight polyethylene resins are used. , the molecular weight of about 200,000 or more, preferably about 600,000 or more, in addition to the homopolymer, also contains carbon atoms a lower α-olefin of about 3 to 1 Å, such as a copolymer of propylene, butene, pentene, hexene or the like. In the case of a copolymer of ethylene and an α-olefin, the ratio of the latter is preferably 1 per liter. The average carbon 〇 is from about 1 to about 20, preferably from about 5 to about 10. The method for producing the ultrahigh molecular weight polyethylene fiber is disclosed, for example, in Japanese Laid-Open Patent Publication No. 55-5228. In addition, the method known per se can be used, and the ultrahigh molecular weight polyethylene fiber can also use Dyneema (trade name, manufactured by Toyobo Co., Ltd.), SpectraC trade name, Huo. Commercial products such as HI-ZEX MILLION (trade name, manufactured by Mitsui Chemicals, Inc.). The above-mentioned wholly aromatic polyamide fiber is not particularly limited, but may be, for example, an aromatic polybenzazole 4 (10) poly-fiber based on a para-type polyarylene fiber. The above-mentioned para-type poly scorpion thief can be poly-p-phenylene terephthalamide fiber (manufactured by Toray DuPont Co., Ltd., trade name: Kevlar29, 49, U9, etc.) or copolymerized paraphenylene _3 4, _ Diphenyl(tetra)benzamide fiber (manufactured by Teijin Co., Ltd., trade name: TeChnora). Among them, the above-mentioned poly-pairs of stupid bases are particularly good for dioxin fibers 323601 19 201233357. The wholly aromatic polyamide fiber can be produced by a method known or based thereon, or a commercially available product as described above can also be used. The above wholly aromatic polyester fiber is not particularly limited, but may be, for example, a polyester composed of self-condensing polyester, terephthalic acid, and p-phenylene phenol, or p-hydroxybenzene. A fiber composed of formic acid and a hydroxyl group of 2-naphthoic acid is used exclusively for the purpose of the composition. The wholly aromatic poly-g-fiber can be produced by a method known or based on it, or a commercially available product such as vectran (trade name, manufactured by Kuraray Co., Ltd.) can be used. The above heterocyclic high-performance fiber is not particularly limited, and may, for example, be a polyparaphenylene benzopyrene (PBZT) fiber or a polyparaphenylene bismuthoxazole (ΡΒ0) fiber. The heterocyclic high-performance fiber may be produced by a known method or a method based thereon, or a pB fiber such as ZylOn (trade name, manufactured by Toyobo Co., Ltd.) may be used. The polyacetal fiber is not particularly limited, but may be produced by a method known or based thereon, or may be, for example, Tenac (trade name, manufactured by Asahi Kasei Co., Ltd.), Deirin (trade name, manufactured by DuPont). And other commercial products. The resin in which the high-strength organic fiber, the carbon fiber, and the glass fiber are immersed is not particularly limited as long as the effect of the present invention is not impaired. However, in addition to the epoxy resin, an unsaturated polyester resin or a vinyl ester resin may be mentioned. Thermosetting resin, etc. Further, it may be a thermoplastic resin. These resins may be used singly or in combination of two or more kinds in any ratio. The epoxy resin may be a bisphenol A, a bisphenol AD, a bisphenol F or a diglycidyl ether compound of bisphenol S or a high molecular weight homolog thereof, a phenolol phenol 20 323601

201233357 phenol novolak plastic polyglycidyl ether or cre 骏 、, too & (cresol nov〇iak) type polyglycidyl ether. In addition, two halogenated derivatives can also be used. Further, in the synthesis process, it is also possible to use an aromatic epoxy resin obtained by bisphenol A, bisphenol F, bisphenol S or the like, and an aromatic epoxy resin obtained by using these glycidyl ages, or using fat. Family epoxy resin. The epoxy resin is not particularly limited as long as it does not impair the effects of the present invention, and can be obtained by a known production method. Commercially available products can also be used. The unsaturated polyester resin is not particularly limited as long as it does not impair the effects of the present invention, and a resin produced by a known method can be used, and a commercially available product can also be used. For example, an acid component composed of an alcohol component composed of a polyhydric alcohol, an α,/5-unsaturated polycarboxylic acid, a saturated polycarboxylic acid, and an aromatic polybasic acid can be used and obtained by a known production method. The vinyl ester resin is not particularly limited as long as it does not impair the effects of the present invention, and a manufacturer which uses a known method can be used, and a commercially available product can also be used. The thermoplastic resin is not particularly limited as long as it does not impair the effects of the present invention. A styrene-based thermoplastic resin, a polyolefin-based thermoplastic resin, a polyvinyl chloride-based thermoplastic resin, a polyurethane-based thermoplastic resin, and a poly-polymer can be used. Any thermoplastic resin such as an ester-based thermoplastic resin or a polyimine-based hot-hot plastic resin is preferable, and a polyolefin-based heat-sensitive resin is preferred. The polyhydrocarbon-based thermoplastic resin is not particularly limited, but may be a polyolefin-based thermoplastic resin such as a polypropylene resin, a polystyrene resin, or an acrylonitrile/butadiene/phenethyl hydrazine resin (ABS resin). . Further, a synthetic resin such as rubber (SBR) or nitrile rubber (NBR) may be synthesized by using ethylene/propylene rubber (EPDM) or styrene/butadiene copolymerization. The content ratio of the fiber to 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 affected, and the type and the molding size of the organic fiber and the resin are different, but it is lightweight and ensures sufficient bending. The desired strength such as rigidity, and the lightweight "can not be easily broken, safe and maintainable", the mass ratio can be set in the range of 80:20 to 60:40. The setting is in the range of 75:25 to 65:35, and it is preferably set in the range of 70:30 to 67:33. If the resin impregnation amount is too high, the appropriate strength cannot be easily maintained. Further, if the resin impregnation amount is too low, the form as a molded article is not easily formed, and even if it is formed, an appropriate strength cannot be obtained. Here, the "appropriate strength" refers to the strength for supporting the effects of the present invention. The above-mentioned main shaft portion (4) differs depending on the type and content ratio of the high-strength organic fiber and the resin to be used, but the specific gravity is preferably from about 13 to about 0.45, and more preferably from 1.32 to 1.37. It is especially preferred from 1.33 to 1.36. The weight and strength of the crutches (7) are related to the thickness of the crutches (7), the thickness of the outer casing portion (18), the fiber-to-resin ratio and thickness of each fiber-reinforced resin layer (31, 32, 33). In addition, it varies depending on the type of resin and the like. However, since the specific gravity of the high-strength organic fiber is smaller than the specific gravity of the carbon fiber, the crutches (7) which are light in weight and high in strength can be obtained by reducing the carbon fiber reinforced resin layer (32) and increasing the high-strength organic fiber resin layer (31). In this case, the specific gravity of the main shaft portion (4) is not limited to a specific value, but it is preferably 1.30 to 1.45. 'The force from the direction orthogonal to the axis of the main shaft portion also has sufficient bending rigidity, and is also prohibitive for a long time. in use

22 323601 S 201233357 Lightweight point of view 'Easy from 丨.32 to l 37' is particularly good at l 33 to 丨.36. The shank portion (1) of the first embodiment is formed in an I-shape, and a hand material (2) or a belt (3) is attached to an arbitrary portion as needed. However, the present invention can also form the handle portion (1) into other shapes such as a T shape as will be described later. The length and thickness of the handle (1) can be appropriately set to a size that the user can surely hold. As shown in Fig. 3, the shank portion (1) includes a shank main body (19) which is formed by a hollow structure extending upward from the upper end of the main shaft portion (4). The shank main body (19) may be integrally formed with the main shaft portion (4) by bubbling one end of the main shaft portion (4) to a predetermined shape by, for example, blow molding or vacuum forming. In the case of forming in this manner, 'the orthogonal cross-section of the shaft of the main body (19) is formed to be larger than the orthogonal cross-section of the main shaft portion (4), so that the user can surely hold it 'and since Since the hollow structure is easy to reduce the weight of the shank portion (1), and the fiber reinforced resin material similar to the above-described main shaft portion (4) is used, the shank portion (1) having high strength can be produced at low cost. However, the present invention can also fix the additional handle (1) to the upper end of the main shaft portion (4) by means of an adhesive or the like. Further, the handle portion (1) may be any core material, and the outer side thereof may be coated with a resin. In this case, a hollow core material may be used. Commercially available products can also be used for these shanks (1), but they can be manufactured by a well-known method. The manufacturing method is not particularly limited, and the dimensions such as the length and the diameter can be appropriately set as needed. Further, the resin material used in the handle portion (1) is not particularly limited as long as it does not impair the effects of the present invention, and may be, for example, a polyester resin or a polyamide resin 23 323601 201233357 grease (for example, nylon 6, 66 nylon). , nylon resin such as MC nylon, etc.), acrylic resin, ABS resin, poly-smoke resin (for example, polypropylene resin, polyethylidene resin, etc.), polybutylene terephthalate resin, poly(p-phenylene dicarboxylate) It is also possible to use a fiber-reinforced resin. Further, examples of the material used for the core material include linaloone, nylon, and the like. In particular, when the shank portion (1)' is formed using, for example, a carbon fiber reinforced resin or a high-strength organic fiber reinforced resin, it is not only lightweight, but also has high strength, and can be inexpensively implemented, which is preferable. The outer surface of the handle body (19) may be directly exposed to the outside, but if a slip-proof shape such as a concave-convex pattern is formed, or a non-slip member (20) is attached as shown in Fig. 3, the user can easily maintain The handle (1) is quite ideal. The anti-slip member (20) may be covered with a synthetic resin such as urethane or a rubber material or the like, or these materials may be formed into a tape shape and wound around the grip portion. In particular, when the anti-slip member (2) of the tape-like shape is wound, when the anti-slip member (20) is damaged by abrasion or the like, it is easy to replace or a new anti-slip member (20). . As shown in Figs. 1 and 4, the pointed end (6) is attached to the lower end of the main shaft portion (4). The pointed end (6) is made of a high-strength organic fiber-reinforced resin, and has a truncated cone shape in which the upper half is a truncated cone shape and the lower half is a spherical surface. A mounting hole (25) is recessed at an upper end of the tip (6), and a lower end of the spindle portion (4) is embedded and fixed in the mounting hole (25). Further, the method of fixing the above-mentioned tip (6) to the main shaft portion (4) is fixed by an adhesive or the like; in a state in which it cannot be separated, the middle tip (6) is not detached from the main body portion (4). Although ideal, if it is fixed into 323601 by pressing in etc.

S 24 201233357 The separable state is ideal when the tip (6) is worn or the like, and can be easily replaced with a new tip (6). Further, when the pointed end (6) is externally fitted to the lower end of the main shaft portion (4) as described above, the lower end portion of the main shaft portion (4) can be protected by the tip (6), which is preferable. However, in the present invention, a mounting portion such as a rod or the like may be protruded from, for example, an upper portion of the tip (6), and the mounting portion may be inserted into the lower end of the spindle portion (4) to be fixed. The thickness and length of the above-mentioned tip (6) can be appropriately set within a range that does not affect the effect of the present invention, for example, the outer diameter is formed larger than the outer diameter of the main shaft portion (4), and is set so as not to be easily embedded in the road surface. The size of the drain hole, etc. of the drain cover. Further, the outer surface of the pointed end (6) is formed into a smooth curved surface, and is not easily caught on a stepped portion such as a road surface or a step, an obstacle or the like. The high-strength organic fiber-reinforced resin forming the above-mentioned pointed end (6) is obtained by dispersing short fibers composed of high-strength organic fibers in a synthetic resin material. If the high-strength organic fiber is too small, the sensing function of the tip (6) cannot be sufficiently exerted, and if it is too large, it is not easily dispersed in the synthetic resin material. Therefore, the proportion of the high-strength organic fibers in the above high-strength organic fiber-reinforced resin material is preferably from 10 to 60% by mass, more preferably from 20 to 50% by mass. The high-strength organic fiber may be, for example, an ultrahigh molecular weight polyethylene fiber, a wholly aromatic polyamide fiber, a wholly aromatic polyester fiber, or the like, similar to the high-strength organic fiber constituting the main shaft portion (4). The ring-shaped high-performance fiber or the polyacetal fiber may be used singly or in combination of two or more. In particular, it is preferred to use a para-type polyarylamine fiber 25 323601 201233357 dimension, in which a polyparaphenylene terephthalamide fiber is preferred. The size of the high-strength organic fiber dispersed in the above synthetic resin material varies depending on the type of the inter-strength organic fiber and the synthetic resin material, and the enthalpy of the filament is about 1.1 to 2.3 dtex and the fiber length is 2 to It can be well dispersed around 8mm, which is quite ideal. The synthetic resin material in which the high-strength organic fibers are dispersed may be a thermosetting synthetic resin or the like. However, in the case of a thermoplastic synthetic resin, the pointed end (6) can be easily formed into a predetermined shape. The thermoplastic synthetic resin is not limited to a specific material. However, if it is a nylon resin such as 6 nylon, 66 nylon or nylon, it is easy to disperse high-strength organic fibers and shape the tip (6). The wear resistance and the like are good, so it is quite desirable. Further, in the above-mentioned high-strength organic fiber reinforced resin, in addition to the above-mentioned high-strength organic fiber, any fiber material such as polyamidamide fiber may be mixed, and may be added to improve wear resistance and durability. Any additives, fillers, colorants, etc., such as financial properties. In the first embodiment, the state in which the display portion is covered with the abrasion-resistant transparent resin layer will be described. In the present invention, for example, a tubular glass fiber reinforced resin layer (33b) may be laminated on the outside of the display layer (34) as in the second embodiment shown in Fig. 5. In the second embodiment, the display layer (34) is formed on the outer side of the second high-strength organic fiber-reinforced resin layer (31b), and the second glass fiber-reinforced resin layer (33b) is formed on the outer side of the second layer. Since the second glass fiber reinforced resin layer (33b) is transparent, the display layer (34) can be clearly seen from the outside, and the abrasion resistance of the second glass fiber reinforced resin layer (33b) is 26 323601 201233357 Since the water is good, it is possible to prevent the display layer (34) from being worn away or wetted and peeled off. Unlike the above-described first embodiment, the wear-resistant transparent resin layer is not required, so that the portion can be inexpensively implemented. The other configuration is the same as that of the first embodiment described above, and functions in the same manner, and therefore the description thereof will be omitted. The first embodiment described above is described with respect to a straight cane. However, the present invention can also be a folding cane as shown in Figs. 6 and 7, for example. In the third embodiment, as shown in Fig. 6(a), the first embodiment has a main shaft portion, a shank portion (1) provided at the upper end of the main shaft portion (4), and a fixed portion. a pointed end (6) at the lower end of the main shaft portion (4). However, in the third embodiment, unlike the first embodiment, the main shaft portion (4) is composed of a plurality of (for example, five) main shaft portions (14) that are connectable and separable from each other, and the main shaft portions (14) are mutually connected to each other. The connecting portion is provided with a cylindrical joint cover (5) for covering the joint portion. Further, the shank portion (1) is integrally formed to extend over the upper end of the uppermost spindle portion (14). Similarly to the main shaft portion (4) of the first embodiment, the main shaft portion (14) has a hollow cylindrical shape in which a cross section of the shaft is formed into a perfect circle, and as shown in Fig. 6(b), a carbon fiber reinforced resin layer (32) is provided. And a high-strength organic fiber-reinforced resin layer (31) formed on the inner and outer peripheral surfaces thereof, and a glass fiber-reinforced resin layer (33) is provided on the outer side and the inner side, respectively. Further, a white reflective tape (15) and a red display tape (16)' are adhered to the outer peripheral surface of the second glass fiber reinforced resin layer (33b), and the outer side is covered with an abrasion-resistant transparent resin layer (35). As shown in Figs. 8 and 9, the adjacent main shaft portion (14) is 323601 27 201233357. The inner end portion (21) of one main shaft portion (14) is fixed as a small diameter portion. (9) 'The inner tube (8) (10) is connected to the main shaft portion ((4) the rubber cord (8). The length of the inner tube (9) from the above-mentioned "knot end portion (21) toward the outer dog is not limited to The specific size may be a length that can surely connect the main shaft portions (14) to each other, for example, it can be set to about 3 to 5 brilliant. Further, the above rubber rope (8) is provided as long as the main shaft portion ((4) is easy to each other) The elasticity and the stretchability of the separation and the connection may be any, and the material and the thickness are not particularly limited, and those known in the art may be used. The inner tube (9) is formed to have an outer diameter substantially equal to the inner diameter of the main shaft portion 〇4). Alternatively, it can be inserted/extracted in the opposite other main shaft portion (the second connecting end portion (22) of (4). Further, this embodiment is press-fitted into the first connecting end portion (21) or is known. The adhesive or the like is fixed to the inner portion formed by the main shaft portion (14) One end of the tube (9). However, the present invention may also form the small-diameter portion-body formed at the connecting end portion of the main shaft portion ((4). The inner tube (9) is not limited to a specific material, and it is preferable to have the above-described main shaft portion (14). The high-strength organic fiber reinforced fine layer and the glass fiber reinforced resin layer to be used are particularly preferable if only the high-strength organic fiber-consuming resin layer such as the (four) shots is used. (4), with the above-mentioned spindle 4 It is preferable that the knives (14) are different from each other. The carbon fiber reinforced resin layer is not included. The joint cover (5) is externally fitted to the first joint end portion (2), and the joint portion (5) can be connected to the spindle portion ((4) It is limited to a specific shape. However, the outer surface thereof is a rounded shape that does not get stuck in other articles, for example, a cylindrical shape having a smaller diameter toward the two 323601 28 201233357, and a ring shape is formed in the central portion of the inner surface. a receiving portion (23), wherein the rubber cord (8) is inserted into the receiving portion (23). Further, the first connecting end portion (21) abuts the front end portion of the receiving portion (2 phantom In the state, inserted from one end of the joint cover (5), and The other end portion of the joint cover (5) is open to the side of the second connecting end portion (22), and an insertion portion (24) is formed in the end portion. By inserting the second connecting end portion (22) into the insertion portion (24), the main shaft portions (14) are coupled to each other, and the main shaft portions (14) are mutually separated by being withdrawn from the insertion portion (24). The insertion portion (24) is provided with an inclined portion (10) whose diameter becomes smaller from the outer end toward the inner side, and extends from the inner end of the inclined portion (1〇) to the inner side to the receiving portion (23) A straight portion (η) having a predetermined inner diameter. The inner diameter of the straight portion (11) is a size that can be surely fastened to the outer peripheral surface of the second connecting end portion (22) without being shaken. . The length of the joint cover (5) is not limited to a specific size, but may be appropriately set within a range that does not affect the effects of the present invention. Preferably, the length of the inclined portion (1〇) is longer than the straight portion (11), and the axial direction of the main shaft portions (14) to be connected is easily aligned, and the second connection can be smoothly guided.卩 (22), specifically, it is preferably an inclined portion: a straight portion = a length of about 5 to 2:1. Further, the length of the straight portion (11) may be a length that can suppress the occurrence of shaking in the joint portion, and the effect is not limited to a specific size, but if it is too long, it is not easy to carry out. Connection, 'mouth / knife off operation, so usually the outer diameter of the main shaft (4) to the left 323601 29 201233357 right. The joint cover (5) is produced by using, for example, polyamide such as nylon 6, but it is not limited to a specific material as long as the effect of the present invention is not affected as long as the joint portion can be surely held. Specifically, 'a thermosetting resin such as an epoxy resin, an unsaturated poly-resin resin, or a ethyl ester resin can also be used'. A polyester resin or a polyamide resin (for example, nylon 6, 66 nylon, MC nylon) can also be used. Nylon resin, etc.), acrylic resin, ABS resin, polyolefin resin (for example, polypropylene resin, polyethylene resin, etc.), poly-p-butyl phthalate resin, polyparaphenylene terephthalate resin, etc. As the thermoplastic resin, a rubber-elastic material such as synthetic rubber or elastomer can also be used. The joint cover (5) can be produced by a well-known method, and it is also possible to add a well-known additive, a pigment, etc. as needed, or a fiber-reinforced resin, or to perform coloring after production. 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 guided by the inclined portion (1). The distal end of the connecting end portion (22) is stopped by the straight portion (11) and is stopped by the receiving portion (23), and the connected state shown in Fig. 9 is formed. In this connected state, the outer peripheral surface of the second connecting end portion (22) is fastened to the inner surface of the straight portion (11), and the occurrence of the shaking can be suppressed. Therefore, it is possible to prevent stress from being concentrated on the portion of the crutches (7) such as the connecting end portion, and it is possible to secure the mechanical strength by the joint portion (5) from the outer side, and the mechanical strength can be improved. Because of the stress concentration caused by the crutches (7) damage caused by the user's fall, and the safe use of crutches (7) 'is quite ideal. Because it does not shake, 30 323601 201233357 will not be connected to the end station during the connection/separation operation, thus improving the durability of the subtraction (7). The shaft that rubs and wears faster does not bend, so the user can use the H (4) when the wand (7) is used. Further, the main pumping portions (14) may be inserted and removed with respect to the connecting end portion or 9 & eating the small diameter portion (9) provided at the connecting end portion, and the connecting end portion may be Since a special structure such as a screwing mechanism is formed, it is possible to easily perform the joining/separating operation by using a gas „ J J J 用 用 用 。 。 。 。 。 。 。 。 。 。 。 。 。 。 分离 分离 分离 分离 分离 分离 分离 分离 分离 分离 分离 分离 分离 分离One end of the joint J is fixed to the first connecting end portion (2))' and the second connecting end portion (22) can be inserted/extracted in the other end portion. However, the present invention can also be The square end portion of the joint cover (5) is fixed to the second joint end portion (22) of the main shaft portion (14) not having the small diameter portion, and the small end portion of the joint cover (5) can be provided with the small joint The first connecting end portion (21) of the other main shaft portion (14) of the portion is inserted and removed. In the third embodiment, the pointed end (6) is formed into a cylindrical shape having a rounded curved surface at the lower portion. Standard type, the upper part is smoothly connected to the outer peripheral surface of the main shaft portion (4) to form the upper end The curved surface having a smaller diameter. The tip (6) and the first embodiment are formed of a high-strength organic fiber strong resin, and a spindle is embedded in the female hole (25) recessed at the upper end. The other end of the portion (4) is the same as the above-described third embodiment, and the same functions are applied in the same manner, and therefore the description thereof is omitted. The above embodiments are directed to the use of a so-called I-shaped handle (1). The crutches (7) are respectively described. However, the present invention may have other shapes of the handle as in the modification 1 shown in Fig. 10 (e.g., the first figure (a) 31 323601 201233357 τ shape The crutches (7) of the handle (1), i. Figure (6) is the ==) The crutches (7) of the part (1) are all on the upper part of the main shaft part (4) a σ ® , ^ ^ The tip used by the moon (6) rf = The use of the cane is not limited to a specific shape. For example, as in the straight cane of the first embodiment, the folding cane of the third embodiment described above may be used, and the A head of the teardrop i may be used. The standard type of tip can also be modified as in the second modification shown in FIG. The standard type tip (6) which is stuck in other parts is shown. EXAMPLES Hereinafter, the present invention will be more specifically described using examples and comparative examples, but the present invention is not limited to the following examples. The high-strength organic fiber is Kevlar29 1670dtex (manufactured by Toray DuPont Co., Ltd.) which is a polyparaphenylene terephthalamide fiber. The organic fiber is used to make a UD having a basis weight of 73 g/m2 ( The unidirectional fiber) sheet and the high-strength organic fiber prepreg having a basis weight of 110 g/m 2 by impregnating the sheet material with a resin content ratio of 67.33 by heat-dissolving method material. Further, the carbon fiber prepreg is a prepreg (variety: 9052S-17 and 3252S-05) using Torayca (registered trademark, manufactured by Toray Co., Ltd.). The prepreg is impregnated with epoxy resin at a resin content ratio of 67: 33 to 32 323601

S 201233357 A UD sheet having a basis weight of 220 g/m2 and a carbon fiber prepreg having a basis weight of 330 g/m2. Further, the glass fiber is a glass cloth WPA-240D (manufactured by Nitto Textile Co., Ltd.) which uses a UD sheet having a basis weight of 1 〇〇 / 1112, and is made by a heat fusion method at a resin content ratio of 67.33. The epoxy resin was impregnated into the glass cloth to obtain a glass fiber prepreg having a basis weight of 150 g/m2. Then, a layer of glass fiber prepreg, three layers of high-strength organic fiber prepreg, a layer of carbon fiber prepreg, two layers of high-strength organic fiber prepreg, and a layer of glass fiber prepreg are laminated from the inside to the whole. After integration, and after heat-hardening, the reflective tape is wound around the surface, and further, a Himilan film (trade name, manufactured by Mitsui & DuPont Chemical Co., Ltd.) having a thickness of 外.〇6 mm in the outer peripheral area layer is further included. The above-mentioned reflective tape was applied as a wear-resistant transparent resin film to obtain the cylinder of Example 1. [Comparative Example 1] The high-strength organic fiber prepreg and the glass fiber prepreg of Example 1 were used in the same manner as in Example 1 except that the carbon fiber prepreg was used in the same manner, and the tube of Comparative Example 1 was obtained. body. [Comparative Example 2] In place of the above-described high-strength organic fiber prepreg, the carbon fiber prepreg and the glass fiber prepreg according to Example 1 were treated in the same manner as in Example 1, and Comparative Example 2 was obtained. Cylinder. The cylinders obtained above had an outer diameter of 12 mm and a sectional area ratio of the hollow portion to the outer casing portion of 67:33. Next, for each of the cylinders, the respective characteristic values of the properties (flexibility), impact resistance, safety, and field maintainability of the steel were measured by the following measurement methods. [Rigidity (Flexibility)] The respective cylinders of the above-described examples and comparative examples were supported by a distance of 780 mm between the fulcrums, and a hook having a load of 3 kg was hung in the center between the fulcrums and left for 10 seconds. The size of the load and the deflection (mm). [Impact Resistance] The crutches of each of the examples and the comparative examples were cut into 30 cm and used as a sample, and the three-point bending drop weight test method described in JIS K 7055: 1995 (bending test method for glass fiber reinforced plastics) was used. Hammer impact tester (trade name: Dynatup (registered trademark) 9210, Instron Co., Ltd.), the cut sample was fixed at a distance of 105 mm between the fulcrums, and the presser with a diameter of 22 mm was pressed under the condition of 110 J. The impact force is applied to measure the fracture state of the sample, the energy absorbed, and the like. The evaluation criteria of this fracture state are as follows. 〇: no fracture △: partial fracture X: easy to completely break [safety] After the impact resistance test, safety was evaluated based on whether or not the fibers were protruded into a spike shape at the impact application position of each cylinder. The safety evaluation criteria are as follows: 〇: There is no fiber that protrudes into a spike, which is very safe. △: A fiber which protrudes slightly into a spike shape. X: There are fibers that protrude into spikes and may stab the hand. 34 323601

201233357 [On-site maintainability] After the financial test, the emergency repair tool (trade name: Yatsuhashikun; quotient break: 39032) of the domestic white cane of the Japanese Character Library is used to repair the break or The damaged part, and the evaluation of the cylinder can be used as the main shaft part for reuse and on-site maintainability. The emergency maintenance tool (26) has, for example, a pair of semi-cylindrical holding plates (13) as shown in Fig. 12. When the broken main shaft portion (4) is repaired by the emergency repair tool (26), the peeling tape of the double-sided tape (12) attached to the back surface of each holding plate (丨3) is torn apart to re-spin the main shaft portion ( 4) The fracture site is placed in the center and clamped to temporarily fix the two holding plates (13), and the two ends of the holding plate (13) are wound with the attached reflective tape (10) to be surely fixed to the cylinder. The state shown in Fig. 13 is formed. The evaluation criteria for the on-site maintainability are as follows. ◦: After the conflict, it can be easily repaired at the site and can be reused as a city. X: After the conflict, it can't be repaired on site, and it can't be reused as a cane. The measurement results of the above respective characteristic values are as shown in Fig. 14 in comparison with Table 1. From the measurement results, it was found that Comparative Example 1 formed of only the carbon fiber-reinforced resin layer had high productivity. However, the impact resistance against the force in the direction perpendicular to the axis of the cylindrical body was not sufficient, and the impact was broken at the time of impact so that the fibers protruded. Spiked, safe and on-site secrets are not good. In addition, in Comparative Example 2 in which only the (four) (four) resin layer was formed, the impact resistance was good, and cracking, safety, and on-site maintainability were required, but 323601 ν was applied from the direction of reduction. 35 201233357 The amount of deflection at the load was large. Low rigidity. The rigidity of the first embodiment of the present invention is better than that of the comparative example 2, and it is only slightly bent when an impact is applied, and the impact resistance against the force in the direction orthogonal to the axis of the cylinder is good, and is impacted. In the part, the fiber does not protrude into a spike shape. It is safe and does not break, so the maintainability of the site is also very good. In the first embodiment of the present invention, the glass fiber reinforced resin layer is provided on the inner surface. Therefore, unlike the above-described comparative example 2 in which all the layers are formed of the high-strength organic fiber prepreg, the inner surface has excellent wear resistance, even if it is, for example, A folding cane in which a rubber cord is disposed in the main shaft portion does not cause the end portion of the main shaft portion to wear faster due to the rubber cord. In the first embodiment, the wear-resistant transparent resin film is disposed on the outer peripheral surface of the reflective tape wound around the outer surface. Therefore, the wear resistance of the outer peripheral surface of the conventional product in which the film is omitted is particularly excellent. Good wear of the reflective tape is prevented. In order to confirm this, the abrasion resistance of the outer surface was measured by the following measurement method. [Abrasion Resistance of Outer Surface] An abrasive cloth having a width of 25 mm and a length of 300 mm (particle size #240, manufactured by N〇rhake Coated Abrasive Co., Ltd.) was used. As shown in Fig. 15, the main shaft portion (4) is horizontally held, and the main shaft portion (4) is arranged horizontally in a direction of 90 degrees with respect to the axial direction of the main shaft portion (4). The above-mentioned abrasive cloth (36) is disposed in the horizontal direction and the vertical direction in such a manner that the upper surface to the vertical surface of the quarter portion (9-degree portion) is in contact with each other. Hanging 330g 36 323601 at the lower end of the vertical portion of the abrasive cloth (36)

The load of the 201233357 (37), and in this state, the abrasive cloth (36) was moved by 200 mm with respect to the main shaft at a speed of 2 times back and forth to wear the surface of the main shaft portion (4). As a result of the above measurement, the abrasion-resistant transparent resin film was omitted, and the reflective tape was exposed on the outer surface. After five round trips, the reflective tape on the surface was worn. The glass fiber reinforced resin layer under the tape was exposed. On the other hand, in the first embodiment of the present invention in which the abrasion-resistant transparent resin film is disposed outside the reflective tape, the reflective tape does not wear even after the back and forth 100 times. Next, the teardrop type tip (6) is attached to the cylinder of the above-described first embodiment as the second embodiment, and the information on the actual road surface shown in Fig. 16 is measured for the use characteristics of the tip (6). In the conveyance and the operability, the impact property is measured for the unevenness of the stepped slipper or the groove portion of the road surface. The above-described road surface system used for the measurement is shown in Fig. 16. The tar pavement shown, the concrete paving with pebbles on the surface as shown in Fig. 16(b), and the concrete paving with corrugated bricks shown in Fig. 16(c) are three. The above-mentioned tip (6) is a teardrop type having a maximum outer diameter of 26.1 mm and a total length of 4〇4 mm, and a mounting hole (25) having an inner diameter of 13 mm formed at the upper end, using a high-strength organic fiber reinforced resin material. Insert the lower end of the main shaft portion (4) having an outer diameter of 1. 5 mm and fix it with an adhesive. The above high-strength organic fiber-reinforced resin material is obtained by dispersing short fibers of polyparaphenylene terephthalamide fibers in a polyamide resin (nylon 6). The polyparaphenylene terephthalamide fiber used was obtained by cutting a filament of h 7dtex into a fiber length of 6 mm and mixing and dispersing it in a polyamide resin. The blending ratio of the high-strength organic fiber-reinforced resin material was set to 7 〇 mass% of the polyamidamide resin, and 30 323601 201233357 polyparaphenylene terephthalamide fiber was set to 30% by mass. [Information transmission] It is determined whether the user can convey the state of unevenness or smoothness of the road surface through the crutches. When the road surface is explored by the user, the difference in the road surface of the object can be detected as "good", and the case where the road surface cannot be detected is "bad". [Operability] The amount of the burden on the hand or wrist and the sound when the tip is connected to the road surface when measuring the swinging of the crutches back and forth, or touching the road surface. The situation that the burden on the opponent and the wrist is small and the sound is not too large is "good", and the above-mentioned burden and loudness are "bad". [Impactability] Whether the test will hit or catch with the slipper of the step or the groove of the road surface, etc., and the situation that does not conflict or get stuck is "good", and the situation may be conflict or jam. inferior". With respect to each of the above-described use characteristics, the remaining results are displayed in the measurement result comparison table 2 of Fig. 6 in comparison with the pointed tip of the conventional cane. The conventional tip used for the comparison object was made of polyamide resin (ΡΑ6), the core type was Comparative Example 3, and the teardrop type was Comparative Example 4, with palm (palm Comparative Example 5. In addition, 'Comparative Example The palm type of 5 is, for example, as described in the "No. 7/〇5818° bulletin of the Ministry of National Affairs, 'the grounding portion of the tip and the main tree waxing system' are used in the polyamine structure. /, the shaft. The fluorobutadiene rubber is disposed between the crucibles as the elasticity. From the above measurement results, it is clear that the above-mentioned comparative example 323601 38 201233357 does not recognize the type of the road surface, and the information conveyability is poor. In contrast, the second embodiment of the present invention can be It is easy to identify the above three types of road surfaces, and it can provide excellent information transmission. That is, the above Comparative Examples 3 to 5 are like the writing of a crayon, and there is a feeling that the chuck is stuck on the road surface, and it is not easy to detect the road surface. In contrast, in the second embodiment of the present invention, for example, the tip and the road (four) are lightly contacted, and there is a slight bounce contact, and the feeling is significantly different depending on the type of the road surface. Moreover, the embodiment 2 of the present invention is of course Compared with the case of the comparative example 3 or the comparative example 5, the operation blade of the comparative example 3 can exhibit a better operation edge, that is, in the comparative example 4, the burden imposed on the user at the time of operation is large, and the operability is bad. In Comparative Example 3 and Comparative Example 5, the above-mentioned burden is small and the operability is good compared with the above-mentioned ==4'. In contrast, in the present invention, the "tip" is good for the road surface as the object to be probed, so that the excessive amount can be reduced. The necessity of swinging or pricking the crutches, as in Comparative Example 3 and Comparative Example 5, can reduce the burden applied to the wrist of the user more well, and the sound when hitting the road surface is not excessively large, and excellent operability can be exhibited. = 'For the above-mentioned _(10), the wear resistance is the same. The 円 strength organic fiber reinforced resin material used in the standard tip used in the third embodiment of the test is the actual (4) 3. =!: The resin material is made high Intensity of organic fibers and mixing; polystyrene 323601 201233357 resin (66 nylon) composed of short fibers of base-based p-xylylene amine fiber and strengthened. In addition, the combination of high-strength organic fibers with enamel-reinforced resin ratio It is 30% by mass. In addition, the test dimension is a molding formed using a polypropylene resin (PP) monomer as a specific body 6 and formed by using a polyamide resin (nylon 6) monomer. The product is as an example 7. The test method is based on the A method described in JIS K 7218: ι986 (sliding abrasion test method for plastics), and is carried out under the following conditions: • Test piece: braided (hollow cylindrical) • Competitor: SUS304 ring shape (hollow cylindrical shape), surface roughness adjustment is done with #1000 abrasive paper (〇. leniRa>) • Measurement items: abrasion quality • Measurement conditions Slide speed: 500 mm / sec Friction area: 2 cm 2 Test weight: 100N Test time: 100 minutes (3km) Measurement quantity: n=l • Laboratory environment: temperature 23±2°C, humidity 50±10〇/〇RH, • Measuring device: Rotary dynamic friction wear testing machine IIIT-2000 -5000N type (manufactured by Takachiho Seiki Co., Ltd.) The test result is a comparison table 3 of the measurement results shown in Fig. 18. From the results of the measurement, it is clear that Comparative Example 6 formed of a polypropylene resin wears out relatively quickly, and Comparative Example 7 formed of a polyamide resin has a high abrasion quality and becomes high in temperature due to rubbing. The resin will dissolve in the middle. 40 323601 201233357 • In contrast, Example 3 of the present invention uses a high-strength organic fiber reinforced resin, so that stable wear can be maintained at the end of the test time, and the wear quality is only a little. From this, it is understood that the tip formed using the high-strength organic fiber-reinforced resin of the present invention has good wear resistance. The crutches described in the above embodiments and the cylinder system used in the crutches are exemplified to embody the technical idea of the present invention, and the shape, size, number of layers, and the like of the respective portions are not limited to the embodiment. Various changes are made within the scope of the patent application of the invention. For example, in the first embodiment described above, the main shaft portion and the shank portion are integrally formed. However, the present invention may be formed separately from each other, and these may be fixed to each other. Further, the folding cane according to the third embodiment described above is a case where each of the connecting portions of the main shaft portion is provided with a joint cover. However, in the present invention, the joint cover may be omitted at any joint portion. For example, the joint cover may be provided at the lowermost joint portion which is easily bent, and the joint cover may be omitted. Further, in each of the above embodiments, the display layer is formed of a reflective tape or a display tape. However, other display layers may be used in the present invention, or some display layers may be omitted. Further, the above embodiment is directed to the case where polyparaphenylene terephthalamide fiber is used as the high-strength organic fiber. However, other kinds of high-strength organic fibers can of course be used in the present invention. (Industrial Applicability) The crutches of the present invention can be used as a walking stick for hiking, skiing, or general walking, in addition to a white cane for visually impaired persons. Moreover, the crutches of the present invention 323601 41 201233357 can reduce the physical burden on the user, and are particularly effective for the elderly, young people, and visually impaired persons. The promotion of self-supporting support, the social participation and labor of the caregiver Productivity improvements are also very useful. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a first embodiment of the present invention, and Fig. 1 is an external view of a straight cane, and Fig. 1 (6) is an AA line end view of Fig. 1(a). Fig. 2 is a partial cross-sectional view showing the laminated structure of the main shaft portion of the i-th embodiment. Fig. 3 is a partial cross-sectional view showing the shank portion of the crutches according to the second embodiment. Fig. 4 is a perspective view of the first embodiment. Fig. 5 is a partial cross-sectional view showing a laminated structure of a main shaft portion according to a second embodiment of the present invention. Fig. 6 is a view showing a third embodiment of the present invention. 6 (&) is an external view of a folding cane, and Fig. 6(b) is an enlarged cross-sectional view of a portion B of Fig. 6(a). 11 Fig. 7 is an appearance of a cane in a folded state according to a third embodiment Fig. 8 is a cross-sectional view of the vicinity of the joint cover of the third embodiment before the joint is connected. Fig. 9 is a cross-sectional view showing the vicinity of the joint cover of the crutches in the connected state according to the third embodiment. The external view of the handle of the modified example 1 of the invention is shown. Fig. 11 is a perspective view showing a modified example 2 of the present invention. The near part 323601 42 201233357 Fig. Fig. 12 is a perspective view showing the emergency service tool used for the maintainability measurement. Fig. 13 is a perspective view of the main part showing the state of the cylinder during the maintenance measurement. A comparison table 1 showing the results of measurement of each characteristic value of the main shaft portion of the present invention in comparison with a comparative example. Fig. 15 is a schematic view of a measuring device for measuring the abrasion resistance of the outer surface of the main shaft portion. Figure 16 is a road surface used to measure the use characteristics of the tip, Fig. 16 (a) is a photograph of the asphalt pavement, and Fig. 16 is a photograph of the concrete paved with pebbles on the surface, Fig. 16 (<;:) is a photograph of the construction of a magnetic monument. & Figure 17 is a comparison table 2 showing the results of comparison between the use characteristics of the pointed tip of the present invention and a comparative example. ^ Fig. 18 is a comparison table 3 showing the results of comparison between the abrasion characteristics of the pointed tip of the present invention and the comparison. , 4 [Description of main component symbols] 1 Handle 2 Handle 3 Strap 4 Spindle section 5 Connector cover 6 Tip 7 Crutches 9 Small diameter section (inner tube) 14 Spindle section 15 Reflex tape 16 Red display tape 17 Hollow part 323601 43 201233357 18 The outer casing portion 19 The shank main body 20 The anti-slip member 21 The first connecting end portion 22 The second connecting end portion 23 The receiving portion 24 The insertion portion 31 The high-strength organic fiber reinforced resin layer 31a The first high-strength organic fiber reinforced resin layer 31b 2 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 44 323601

Claims (1)

201233357. VII. Patent application scope: 1. A crutches' is a crutches having a main shaft portion (4) and a handle portion (1) provided at an upper end of the main shaft portion (4), characterized in that: the main shaft portion (4) The high-strength organic fiber-reinforced resin layer (31) and the carbon fiber-reinforced resin layer (32) are provided, and the high-strength organic fiber-reinforced resin layer (31) is formed on at least one outer layer of the carbon fiber-reinforced resin layer (32). 2. The crutches according to claim 1, wherein the carbon fiber reinforced resin layer (32) has the high-strength 4 organic fiber reinforced resin layer (31) formed on the outer peripheral surface and the inner peripheral surface of the carbon fiber reinforced resin layer (32). 3. The crutches according to claim 1 or 2, wherein the high-strength organic fiber is a para-type polyarylene fiber. 4. The crutches according to any one of claims 1 to 3, wherein the main shaft portion (4) is provided with fiberglass on the inner side of the innermost high-strength organic fiber reinforced resin layer (31a). Reinforced resin layer (33a). 5. The crutches according to any one of claims 1 to 4, wherein the main shaft portion (4) is provided with a glass fiber on the outer side of the outermost high-strength organic fiber reinforced resin layer (31b). Reinforced resin layer (33b). 6. The crutches according to any one of claims 1 to 5, wherein the main shaft portion (4) has a display layer on the outer side of the outermost high-strength organic fiber reinforced resin layer (31b). (34). 7. The crutches according to claim 6, wherein the outer side of the display layer (34) is provided with a cylindrical glass fiber reinforced resin layer (3 magic. 8. As described in claim 6 The crutches, wherein the wearable transparent resin layer (35) is provided on the outer side of the display layer (34) of the above-mentioned display 1 323601 201233357. The crutches according to any one of claims 1 to 8 The main shaft portion (4) is hollow, and the ratio of the sectional area of the hollow portion (17) to the outer casing portion (18) is 85: 15 to 56 in the axial cross section of the main shaft portion (4). The crutches according to any one of the preceding claims, wherein the main shaft portion (4) is composed of a plurality of main shaft portions (14) that are connectable and separable from each other, adjacent to each other. The main shaft portion (14) is provided with a part (the fourth (4) portion (2) of (4)) which is inserted into the second connecting worm 2 of the other main shaft portion (4) opposed to the ^=2 portion (21). The small diameter section (9).) 11. The crutches as described in the first paragraph of the patent application, wherein, the upper part, the middle part (9) The use of a high-strength organic fiber reinforced resin layer to form a scorpion, as described in claim 1 or claim 11, wherein the crutches have a first link for covering the above-mentioned connections. The tubular joint cover (5) of the second connecting end portion (22), the joint of the first side end portion (21) and the second connecting end portion (22) Either one of them can be constructed by broadcasting another connection end inside the other end. The crutches according to any one of claims 1 to 12, wherein the handle (1) has a handle body formed of a hollow body extending from an upper end of the main shaft portion (4) (19) The axial cross section of the shank main body (19) is larger than the orthogonal cross section of the main shaft portion (4). 14. The nucleus rod according to any one of the preceding claims, wherein the shank (1) is formed using a high-strength fiber reinforced resin. The crutches according to any one of claims 1 to 14, wherein the handle (1) has a non-slip member (20) on at least a portion of the outer surface. 16. A cane comprising a main shaft portion (4) and a cane attached to a tip end (6) at a lower end of the main shaft portion (4), characterized in that: the pointed end (6) is used to make a high-intensity organic The short fibers composed of fibers are formed by dispersing a high-strength organic fiber-reinforced resin in a synthetic resin material. 17. The crutches according to claim 16, wherein the high-strength organic fiber reinforced by the high-strength organic fiber-reinforced resin is from 10 to 60% by mass. And the fiber length is from 2 to 8 mm, and the fiber length of the filament is from 1. 1 to 2. 3 dtex, and the fiber length is from 2 to 8 mm, as described in claim 16 or 17, wherein the fiber has a fineness of from 1. 1 to 2. 3 dtex and a fiber length of from 2 to 8 mm. . 19. The crutches according to any one of claims 16 to 18, wherein the crutches having the pointed end (6) are as described in any one of claims 1 to 15. crutch. The crutches according to any one of claims 1 to 19, wherein the crutches are white canes. 21. A tubular body comprising: a tubular high-strength organic fiber reinforced resin layer (31) and a carbon fiber reinforced resin layer (32), wherein the carbon fiber reinforced resin layer (32) is at least on an outer peripheral surface thereof 323601 201233357 The volume layer has the above-mentioned high-strength organic fiber reinforced resin layer (31). The crutches according to claim 21, wherein the carbon fiber reinforced resin layer (32) has the high-strength organic fiber reinforced resin layer (31) formed on the outer peripheral surface and the inner peripheral surface thereof in a volume layer. 23. The cylinder according to claim 21 or 22, wherein the high-strength organic fiber is a para-type aromatic polyamide fiber. The cylindrical body according to any one of the present invention, wherein the innermost high-strength organic fiber reinforced resin layer (31a) is provided with a glass fiber reinforced resin layer (33a). ). The cylindrical body according to any one of the present invention, wherein the outermost high-strength organic fiber reinforced resin layer (31b) has a cylindrical glass fiber reinforced resin on the outer side. Layer (33b). The cylinder according to any one of claims 21 to 25, wherein a ratio of a sectional area of the hollow portion (17) to the outer casing portion (18) in the axial cross section is 85 : 15 to 56 ·· 44. The cane according to any one of claims 1 to 20, wherein the cane according to any one of claims 1 to 20 is a cylindrical body for a spindle portion. 323601 S