General Question

RedDeerGuy1's avatar

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

Asked by RedDeerGuy1 (24892points) October 13th, 2022

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.

Observing members: 0 Composing members: 0

5 Answers

smudges's avatar

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

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

smudges (11161points)“Great Answer” (8points) Flag as…
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.

JLeslie (65722points)“Great Answer” (5points) Flag as…
kritiper's avatar

It is activated by high speed.

kritiper (25757points)“Great Answer” (1points) Flag as…
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