The prerequisites for patent application are novelty, creativity and practicality. In other words, no matter whether the structure of your invention is simple or complex, as long as it meets the three patent characteristics, you can apply for a patent. And the simpler the structure, the more timely it is necessary to apply for a patent and obtain legal protection to prevent competitors from imitating it.
If you have any other questions, you can search for Oundun Intellectual Property on Baidu!