| 摘要 |
The main structural portions of the frame are standardized and are assembled without welding therebetween, thereby enabling a reduction in the number of components, a simplification of manufacturing processes, and simple attachment and detachment of various types of security components and accessory components. An extruded material or a molded material having an integrally molded structure is cut into required lengths and screwed to one another to form the main structural portions. As a result, the frame is assembled without welding the main structural portions themselves and the main frame is simultaneously made to be a structure of a single bar having no joint, which distributes a load and realizes the body without using a truss structure. Furthermore, a concave groove is formed in the integrally molded structural material, and is used to screw or insert the security components and accessory components, which simplifies attaching and detaching of the components. |
