This to invention relates to the support wheels of the carrier region for carrying the goods in hospitals, restaurants, is coupled to the lower end of the carrier foot in the holder for easily coupling the wheel, through-holes are perforated in the center, the lower end has the closure member formed of a perforated, but the cap-shaped locking step bent outwardly, a plurality of holes flowing between the through ball engaging shoulder; A nut member positioned on the inner side is fixed to enable the welding of the coupled wheel bolt member and the threaded upper and the lower height adjustment of the closure member; And but said nut member injection-molded to the closure member welded integrally, and the molten resin injected from the top of the closure member formed between the outer surface of the inner surface of a nut member of the closure member through said inlet hole, the upper portion of said closure member the molten resin is the matter about the inner surface of the foot is predetermined projection height so that the combined interference fit the guide hole of the same inner diameter of the through-ball formed at the center inside the mold injection on; as yirueojim further including the wheel if the earth structural durability as well as improve, and how the earth bonding is coupled to the foot of the carrier and its bottom is intended to provide enhanced global support wheels for a carrier that can be prevented that the flow or escape.
展开▼
