What inventions can I apply for if I want to apply for a utility model patent?

The meaning of utility model patent: utility model patent refers to a new practical technical scheme proposed for the shape, structure or combination of products. The protection period is 10 year. The shape of a product refers to the definite spatial shape that the product has and can be observed from the outside. The technical scheme proposed for product shape can be the technical scheme proposed for product three-dimensional shape, such as the improvement of cam shape and cutter shape; It can also be a technical scheme of two-dimensional shape of products, such as the improvement of sectional shape of profiles. The structure of a product refers to the arrangement, organization and interrelation of various components of the product. The product structure can be either a mechanical structure or a circuit structure. Mechanical structure refers to the relative position relationship, connection relationship and necessary mechanical cooperation relationship between components that make up a product, and circuit structure refers to the determined connection relationship between components that make up a product. It can be divided into two types according to different products: 1. One is mechanical products, which are composed of parts with different shapes and structures in various connection ways and can realize certain functions. 2. The other is modular products, which mainly refer to electrical or information things. Electronic component modules with different functions are connected in a certain logical order to realize certain functions. In fact, in theory, it seems that the connection of electronic component modules should not be called shape structure, and it seems that it should not be the authorized object of utility models. However, in reality, products made of electronic component modules connected by wires in a certain order can apply for utility model patents.