3results about How to "With dustproof" patented technology

This utility model relates to the field of circuit board technology and discloses a circuit board with a built-in heat dissipation and airflow guiding structure. The circuit board includes a circuit board body with a copper heat-conducting strip embedded inside. A heat dissipation base is connected to the front end of the circuit board body, and a guide pipe is connected to the outside of the heat dissipation base. A heat dissipation fin holder is connected to the front end of the guide pipe, and a cooling fan is mounted on the top of the heat dissipation fin holder. A connector is mounted on the left side of the circuit board body, and a CPU module is mounted on the front end of the circuit board body. This utility model, by setting up a heat dissipation and airflow guiding structure, allows heat to be transferred through the heat dissipation base to the guide pipe and heat dissipation fin holder during use. Then, by activating the cooling fan, the heat on the heat dissipation fin holder is dissipated, thus achieving the heat dissipation and airflow guiding function.

This invention belongs to the field of micro-coating protection and discloses an organosilicon aerosol coating for waterproofing precision instruments and its preparation method. The organosilicon aerosol coating comprises, by weight, 4-6 parts of fluorinated organosilicon, 2-3 parts of organosilicon-acrylate resin, 30-40 parts of a first solvent, 20-30 parts of a second solvent, 1-1.5 parts of a release agent, 0.5-1 parts of a leveling agent, and a certain amount of propellant. This invention uses a first solvent and a second solvent with different volatility properties to improve the self-leveling and film-forming quality of the microfilm after spraying, reducing surface micropore defects caused by excessive evaporation and forming a good waterproof layer. Through the synergistic effect of fluorinated organosilicon and organosilicon-acrylate resin as film-forming materials, the waterproof coating formed with the release agent and leveling agent possesses both long-lasting waterproofing and peelability. When used for the protection of precision instruments, the coating can be peeled off after a certain protection period without leaving residual pollution on the instrument surface.

This utility model discloses a vertical portable speaker, including a speaker body and casters. The speaker body has casters at its bottom and a fixing plate on its exterior. A first and second mounting bracket are located on the exterior of the speaker body, arranged opposite each other. The bottom of each bracket has an inner groove, and an anti-slip pad is embedded inside the groove. This vertical portable speaker, by installing the first and second mounting brackets on the exterior of the speaker body, allows for initial assembly when the speaker is unstable on the ground. The speaker body is then removed, and the mounting bracket structure is installed and fixed to the exterior by tightening the external fasteners. This provides greater stability when the speaker body is placed, and a stable external structure is provided for use.