These are the self-closing hinges. Inside these hinges are springs under tension, which pull the door closed after it has been opened. It sounds as if one or both of your hinges are not working.

TAIPEI, Sept. 17, 2020 /PRNewswire/ -- Waterson 3-in-1 Closer Hinges make self-closing doors more affordable by eliminating the need for overhead or in-floor door closers. According to Betty Chen ...

Waterson's innovative gate hinges provide efficient self-closing solutions for modern architectural designs. Aesthetic, functional, and adjustable. YUNLIN, TAIWAN, July 31, 2023/EINPresswire.com ...