The main reasons for choosing a children's tricycle
are to see whether it is a good frame, secondly, whether it is composed of good parts, and thirdly, whether the components are assembled well or not. After combining these three factors scientifically, it can be regarded as a reliable stroller. (Tricycles belong to the category of children's toys in foreign countries, so the safety standard used is the safety standard of children's toys. Generally, the EU EN71 standard is used for reference, and the CE mark can only be affixed to the European market after passing.) The frame is equivalent to a human skeleton, with a frame To install various car parts. The whole frame is composed of handlebar, front fork and main frame, and the material used is generally steel pipe. According to the position of the seat on the frame, it can be divided into medium-high type and low-profile type. The medium-high type is the classic medium-sized type. The rider's hands, feet and seat form an equilateral triangle, which fully adapts to the child's body; the low-profile type is the most recent It has become popular at home and abroad for a few years - the center of gravity of the whole vehicle is low, it is very imposing when riding, and it is not suitable for children's poor growth.
(Children's cars are in the category of children's toys in foreign countries, so the paint used does not contain heavy metals and toxicity) Generally, ordinary steel pipes, black pipes and bright steel pipes are used. According to the diameter of the steel pipe, there are ones with a diameter of less than 10 mm. The low configuration and the medium and high configuration with a diameter of more than 22 mm are divided into steel pipes with a diameter of less than 1 mm and a steel pipe with a diameter of more than 1.2 mm according to the wall thickness of the steel pipe. Foreign manufacturers also have frames that use materials other than iron, such as aluminum alloys, which will not be discussed here.
Lightness, firmness, and good elasticity are one of the goals pursued by the frame. In order to achieve this goal, it depends on the craftsmanship of each frame manufacturer. For example, whether the designed frame is designed according to the strength and characteristics of the material, and whether the welding process is mature. These all directly affect the appearance, strength and elasticity of the frame. There is also more important is industrial spray paint, good frame spray paint evenly, and spray 3 layers of paint. Don't underestimate the spray paint, a good spray paint can make the children's car easy to maintain and not easy to rust. In addition, there is a low-cost powder spray, that is, plastic powder coating.
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