Belt mechanism for belt tensioner and belt tensioner

1 . A belt mechanism for a belt tensioner, comprising a clamping component and a fixing component;

the clamping component comprises a clamping frame, a clamping torsion spring, and a clamping body;

the clamping frame is rotatably connected to a driving arm of the belt tensioner;

one end of the clamping torsion spring abuts against the clamping frame;

the clamping body is fixedly provided at one end of the clamping frame;

when the clamping component clamps and fixes excess webbing, the clamping body clamps and fixes the excess webbing to the belt tensioner;

the fixing component comprises two fixing rods, the fixing rods are slidably fitted with the driving arm of the belt tensioner;

the clamping frame is rotated away from the driving arm of the belt tensioner to a first position;

when the clamping torsion spring drives the clamping frame to rotate towards the driving arm of the belt tensioner, and the clamping frame is at a second position, the fixing rods abut against the clamping frame so as to prevent the clamping frame from resetting.

2 . The belt mechanism for a belt tensioner according to claim 1 , wherein the fixing component further comprises pushing blocks, the number of the pushing blocks is the same as that of the fixing rods;

the pushing blocks are slidably fitted with the driving arm of the belt tensioner;

the pushing blocks are fixedly connected to the fixing rods;

when the pushing blocks are pressed, the pushing blocks drive the fixing rods to slide, and the fixing component is unlocked to cause the clamping frame to be reset.

3 . The belt mechanism for a belt tensioner according to claim 2 , wherein the fixing component further comprises a reset spring, and the reset spring is provided on the driving arm of the belt tensioner;

the reset spring is connected to the fixing rods, when the clamping torsion spring drives the clamping frame to rotate and return towards the driving arm of the belt tensioner, the fixing rods abut against the clamping frame.

4 . The belt mechanism for a belt tensioner according to claim 3 , wherein one side of the fixing rods is provided with an inclined surface, and when the clamping frame is rotated away from the driving arm of the belt tensioner and abuts against the inclined surface, the clamping frame pushes the fixing rods to slide via the inclined surface so as to unlock the fixing component.

5 . The belt mechanism for a belt tensioner according to claim 3 , wherein the fixing component further comprises one or more limit blocks, and the limit blocks are fixedly provided on the driving arm of the belt tensioner;

when the reset spring pushes the fixing rods to reset, the pushing block abuts against the limit blocks.

6 . The belt mechanism for a belt tensioner according to claim 2 , wherein the pushing block is engraved with a friction texture to cause the pushing block to be easily pushed.

7 . The belt mechanism for a belt tensioner according to claim 1 , wherein the clamping body is fixedly provided with a plurality of fixing protrusions on one side facing the belt tensioner, and when the clamping body clamps and fixes the excess webbing to the belt tensioner, each of the fixing protrusions abuts against the webbing.