Cane and Cylindrical Body

Abstract

Provided is a cane that has a sufficient impact-resistant strength; and is excellent in safety, durability and repairability and also lightweight but has a high stiffness. Such a cane has a shaft ( 4 ) and a grip, the shaft ( 4 ) comprising a high-strength-organic-fiber-reinforced-resin layer ( 31 ) and a carbon-fiber-reinforced-resin layer ( 32 ), the high-strength-organic-fiber-reinforced-resin layer ( 31 ) being integrally laminated onto each of the outside and inside surfaces of the carbon-fiber-reinforced-resin layer ( 32 ), the shaft ( 4 ) comprising a glass-fiber-reinforced-resin layer ( 33 a ) on the inner side of the innermost high-strength-organic-fiber-reinforced-resin layer ( 31 a ), the shaft ( 4 ) comprising a glass-fiber-reinforced-resin layer ( 33 b ) on the outer side of the outermost high-strength-organic-fiber-reinforced-resin layer ( 31 b ).

1 . A cane having a shaft and a grip provided at the upper end of the shaft,
 the shaft comprising a high-strength-organic-fiber-reinforced-resin layer and a carbon-fiber-reinforced-resin layer,   the high-strength-organic-fiber-reinforced-resin layer being integrally laminated onto at least the outside surface of the carbon-fiber-reinforced-resin layer.   
     
     
         2 . The cane according to  claim 1 , wherein the high-strength-organic-fiber-reinforced-resin layer is integrally laminated onto each of the outside and inside surfaces of the carbon-fiber-reinforced-resin layer. 
     
     
         3 . The cane according to  claim 1 , wherein the high-strength organic fiber is a para-aramid fiber. 
     
     
         4 . The cane according to  claim 1 , wherein the shaft comprises a glass-fiber-reinforced-resin layer on the inner side of the innermost high-strength-organic-fiber-reinforced-resin layer. 
     
     
         5 . The cane according to  claim 1 , wherein the shaft comprises a glass-fiber-reinforced-resin layer on the outer side of the outermost high-strength-organic-fiber-reinforced-resin layer. 
     
     
         6 . The cane according to  claim 1 , wherein the shaft comprises an indicating layer on the outer side of the outermost high-strength-organic-fiber-reinforced-resin layer. 
     
     
         7 . The cane according to  claim 6 , wherein a cylindrical glass-fiber-reinforced-resin layer is provided on the outer side of the indicating layer. 
     
     
         8 . The cane according to  claim 6 , wherein a wear-resistant transparent resin layer is provided on the outer side of the indicating layer. 
     
     
         9 . The cane according to  claim 1 , wherein the shaft is hollow-structured, and in the cross-section perpendicular to the axis of the shaft, the cross-sectional area ratio of a hollow and a shell surrounding the hollow is 85:15 to 56:44. 
     
     
         10 . The cane according to  claim 1 , wherein the shaft consists of a plurality of mutually connectable and separable shaft parts, and in the shaft parts adjacent to each other, a first connecting end of one shaft part is provided with a smaller-diameter part that can be inserted into and removed from a second connecting end of the opposite shaft part. 
     
     
         11 . The cane according to  claim 10 , wherein the smaller-diameter part is formed of a high-strength-organic-fiber-reinforced-resin layer. 
     
     
         12 . The cane according to  claim 10 , wherein a cylindrical joint cover is provided to cover the first connecting end and the second connecting end which are connected to each other,
 one end of the joint cover being fitted onto one of the first and second connecting ends and fixed thereto,   the other end of the joint cover being configured such that the other connecting end can be inserted thereinto and removed therefrom.   
     
     
         13 . The cane according to  claim 1 , wherein the grip has a hollow-structured grip body extended from the upper end of the shaft, and the cross-section perpendicular to the axis of the grip body is larger than that of the shaft. 
     
     
         14 . The cane according to  claim 1 , wherein the grip is formed of a high-strength fiber-reinforced resin. 
     
     
         15 . The cane according to  claim 1 , wherein the grip has an antislip member on at least part of the outer surface thereof. 
     
     
         16 . A cane having a shaft and a ferrule attached to the lower end of the shaft,
 the ferrule being formed of a high-strength organic fiber-reinforced resin in which staple fibers of a high-strength organic fiber are dispersed in a synthetic resin.   
     
     
         17 . The cane according to  claim 16 , wherein the ratio of the high-strength organic fiber in the high-strength organic fiber-reinforced resin is 10 to 60 mass %. 
     
     
         18 . The cane according to  claim 16 , wherein the staple fibers dispersed in the synthetic resin have a filament fineness of 1.1 to 2.3 dtex and a fiber length of 2 to 8 mm. 
     
     
         19 . The cane according to  claim 16 , wherein the shaft comprises a high-strength-organic-fiber-reinforced-resin layer and a carbon-fiber-reinforced-resin layer, the high-strength-organic-fiber-reinforced-resin layer being integrally laminated onto at least the outside surface of the carbon-fiber-reinforced-resin layer. 
     
     
         20 . The cane according to  claim 1 , wherein the cane is a white cane. 
     
     
         21 . A cylindrical body comprising a cylindrical high-strength-organic-fiber-reinforced-resin layer and a cylindrical carbon-fiber-reinforced-resin layer,
 the high-strength-organic-fiber-reinforced-resin layer being integrally laminated onto at least the outside surface of the carbon-fiber-reinforced-resin layer.   
     
     
         22 . The cylindrical body according to  claim 21 , wherein the high-strength-organic-fiber-reinforced-resin layer is integrally laminated onto each of the outside and inside surfaces of the carbon-fiber-reinforced-resin layer. 
     
     
         23 . The cylindrical body according to  claim 21 , wherein the high-strength organic fiber is a para-aramid fiber. 
     
     
         24 . The cylindrical body according to  claim 21 , comprising a glass-fiber-reinforced-resin layer on the inner side of the innermost high-strength-organic-fiber-reinforced-resin layer. 
     
     
         25 . The cylindrical body according to  claim 21 , comprising a cylindrical glass-fiber-reinforced-resin layer on the outer side of the outermost high-strength-organic-fiber-reinforced-resin layer. 
     
     
         26 . The cylindrical body according to  claim 21 , wherein, in the cross-section perpendicular to the axis of the cylindrical body, the cross-sectional area ratio of a hollow and a shell surrounding the hollow is 85:15 to 56:44. 
     
     
         27 . The cylindrical body according to  claim 21 , which is used as a shaft of a cane having a grip provided at the upper end of the shaft.