Webbing adjusting buckle

A webbing adjusting buckle, comprising:

• a shell (1), wherein the shell (1) is provided with a webbing connecting space (2);
• a roller (3) arranged in the shell (1) and be capable of rotating around an axis of the roller (3), as well as moving back and forth relative to the shell (1);
• wherein the middle part of the roller (3) is located in the webbing connecting space (2), and both ends of the e roller (3) are extended into the shell (1), allowing a webbing of a seat belt to be mounted on the shell (1) after bypassing the roller (3), and allowing the length of the webbing of the seat belt to be adjusted by rotating the roller (3);
• and
• at least one limit locking member (4) movably assembled in the shell (1), wherein the locking member (4) moves in the same direction as the roller (3);
• the limit locking member (4) comprises a limit column (5) and an elastic member (6);
• the limit column (5) comprises a first end and a second end opposite to each other, and the elastic member (6) comprises a first end and a second end opposite to each other;
• wherein the elastic member (6) is arranged in a length direction of the limit column (5), and the first end of the elastic member (6) rests against the first end of the limit column (5);
• the second end of the elastic member (6) rests against the shell (1);
• wherein at least a part of the second end of the limit column (5) rests against an outer wall of the roller (3), and a rotation limit structure is formed between the outer wall of the roller (3) and the limit column (5), to allow the roller (3) to rotate in one direction and prevent the roller (3) from rotating reversely;
• and the elastic member (6) is used to provide the limit column (5) with an elastic force towards the roller (3).