A slidably extendable barrier for placement between two relative positions is provided, including a first sliding partition plate, a second sliding partition plate, a locking
assembly, and an adjusting and pressure-applying
assembly. The first sliding partition plate and the second sliding partition plate can slide relative to each other along a length direction; the locking
assembly is used for optionally locking the first sliding partition plate and the second sliding partition plate along the length direction. The adjusting and pressure-applying assembly enables the slidably extendable barrier to be fixed between the two relative positions. During use, following the logic of “sliding adjustment locking and positioning-pressure-applying fixation”, the core advantages of “flexible
adaptation, rapid installation, stability and reliability” are achieved. It is suitable for application scenarios with high requirements on installation convenience, environmental friendliness, and
scenario adaptability, integrating functionality and practicability, and enhancing the user experience.