Cane and tubular body

Abstract

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

Description

technical field [0001] The present invention relates to walking sticks such as white walking sticks for the visually impaired. More specifically, the present invention relates to walking sticks having sufficient impact resistance against force from a direction perpendicular to the axis of the shaft, safety, durability and maintenance. Excellent performance, lightweight and high rigidity. Background technique [0002] At present, walking sticks, also known as crutches or walking sticks, are not only used by people with inconvenient legs and feet such as the visually impaired and the elderly, but also by healthy people when hiking or general mountain climbing. Such walking sticks generally include: a rod-shaped shaft, a handle formed on the upper end of the shaft for the user to hold, and a toe cap attached to the lower end of the shaft. Though these existing walking sticks are more or less different in structure, in a word most of them are made of materials such as wood or a...

AI Technical Summary

Problems solved by technology

[0003] However, for example, the so-called white cane used by the visually impaired is mostly used for a long time with the front end slightly raised from the ground, and it is desired to be lightweight. burdensome problems

In addition, this wooden cane also has problems in terms of strength, and there is also a problem that warpage occurs on the shaft due to repeated swelling and drying due to environmental changes, or the paint on the surface peels off.

In addition, the aforementioned aluminum alloy canes are lighter in weight than wooden canes, but they are still heavy when used for a long time, and are prone to dents or bends due to impacts.

Therefore, there is a problem that when an external force due to contact with a person, a bicycle, or other obstacles is applied to the cane, the part where the above-mentioned crack occurs is likely to break.

However, in the case of forming the above-mentioned shaft with a high-strength organic fiber-reinforced resin, although the impact resistance is excellent, compared with the case of using a carbon fiber-reinforced resin, the rigidity is lowered.

In order to solve this problem, if a high-strength organic fiber-reinforced resin layer is formed thickly to increase rigidity, there is a problem that the shaft will become thicker, the amount of resin used will increase, and the weight of the cane will become too heavy.

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