General Question

RedDeerGuy1's avatar

How does a car's shoulder strap seat belt know when to lock?

Asked by RedDeerGuy1 (24487points) October 13th, 2022
5 responses
“Great Question” (0points)

In a car? For the shoulder strap?

Sometimes it clicks and sometimes it goes slack when deployed.

Is that a defect or is it supposed to be like that?

Have you noticed the issue?

I’m frustrated trying to put one on. Sometimes it locks and sometimes it goes slack.

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Answers

smudges's avatar

It doesn’t know it…it’s purely mechanical.

https://www.youtube.com/watch?v=aunIE33GYZc

JLeslie's avatar

If you pull quickly it locks up, like if you were thrown forward in a crash. If you pull gently it won’t lock up.

kritiper's avatar

It is activated by high speed.

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