Door and window switching mechanism with stroke adjustment function

A door and window switching mechanism with a stroke adjustment function, comprising:

• a mounting panel,
• a stroke adjustment mechanism, and
• a transmission arm plate disposed between the mounting panel and the stroke adjustment mechanism, wherein the mounting panel and the stroke adjustment mechanism are rotationally connected, and one end of the transmission arm plate is slidably connected to the mounting panel while the other end is rotationally connected to the stroke adjustment mechanism,
• wherein the stroke adjustment mechanism comprises:
• a stroke bracket,
• a linear transmission component,
• a stroke adjustment assembly, and
• a mounting base, wherein the linear transmission component is slidably mounted on the stroke bracket, and the mounting base is mounted on the stroke adjustment assembly, with both ends of the linear transmission component being drivingly engaged with the transmission arm plate and the stroke adjustment assembly;
• when the mounting panel and the stroke adjustment mechanism rotate relative to each other, the linear transmission component converts the rotational movement of the transmission arm plate into its own sliding movement and transmits it to the stroke adjustment assembly, and after amplification by the stroke adjustment assembly, it drives the mounting base to displace in an extension direction of the stroke bracket;
• wherein a limiting slot is provided on the stroke bracket, the transmission arm plate is L-shaped, and a limiting protrusion is provided on the end of the transmission arm plate close to a gear plate and protrudes from an end surface of the transmission arm plate, the limiting slot and the limiting protrusion being correspondingly engaged to restrict a final position of the transmission arm plate and the stroke bracket in an open state of the door or window, thereby controlling an opening and closing angle of the door or window.