Seat belt pretensioner

What are the different types of seat belt pretensioners? What does pretension mean in a seatbelt? What is the difference between a pretensioner and a retractor?

Countless auto accident survivors literally owe their lives to a handful of inventors who enhanced the seatbelt into an active restraining device , by developing the seatbelt pretensioner. A seat belt pretensioner is a part of the seat belt system that locks the seatbelt in place in the event of a crash. It is an addition to the basic seatbelt of a vehicle that has been proven to reduce the number of injuries and deaths from crashes.

The idea of a pretensioner is to tighten up any slack in the belt webbing in the event of a crash. Whereas the conventional locking mechanism in a retractor keeps the belt from extending any farther, the pretensioner actually pulls in on the belt. This force helps move the passenger into the optimum crash position in his or her seat. Small form factors can be easily incorporated into the seat design. All the passenger sees and feels is a standard lap belt.

Two-point pretensioner systems retract the seatbelt , and the advanced design limits the seatbelt load to non-injurious levels. Ever wonder what a seat belt Pre-tensioner does in the event of a crash? Well, your about to find out.

Seat Belt Pretensioner Types: There are three types of seat belt pretensioners , electrical, mechanical, and pyrotechnic. The latest version is the pyrotechnic pretensioner , which use electrically triggered pyrotechnics that tighten the seatbelt upon sensing a crash event. Hey guys, if your air bag light is on and the co. We rebuild all seat belts , if they are locke torn, cut, or just not working properly.

Seat belts will usually lock after an accident. In this case the seat belt will need to be rebuilt. We deal with mostly body shops, collision shop, automotive dealership to restore your seat belt after an accident. Dont purchase new or used seat belts , send your seat. But Did You Check eBay?

Simply start by entering your vehicle registration, confirm the part you need and a little about you. Great Prices On Great Brands. STOP BUYING SEATBELT TENSIONERS! We DO NOT repair seatbelt tensioners but we do have the parts so you can do it yourself.

There is a known pretensioner which draws in a seat belt buckle when the same deceleration as that for a locking operation of the retraction shaft is detected and which serves as a device for canceling, in some measure, the looseness of the seat belt and the withdrawal of the seat belt caused by the time lag up to the time when the retraction shaft is locked such as, for example, shown in. There are sensors in your vehicle which detect this sudden deceleration. Once they do, the seat belt pretensioner sends a force which moves a concealed piston in your seat belt system.

The seat belt pretensioner allows that passenger to come into contact with the inflated airbag in a controlled way.

A seat belt with an anchor pretensioner is designed to have a dual-stage deployment in an event of a crash. So when a vehicle gets into an accident, the following occurs: The crash is detected by an impact or crash sensor. The signal is transmitted to the SRS airbag computer.

The buckle pretensioner uses a pyrotechnic gas generator that propels the piston. After it activates, the safety belt buckle has a cable that pulls the buckle down toward the seat , thereby tightening and locking the belt. The anchor pretensioner uses a pyrotechnic gas generator that propels the piston.

Was just wondering if you had a sec could you cast your eyes over a photo of my wiring below? Get Top Products With Fast and Free Shipping on eBay. The Top 1Retailers Can Be Found on eBay. How does seat belt pretensioner work? That incredibly fast retraction of the belt fabric removes the slack from the belt instantly.

This extra seatbelt pre- tension, moments prior to the full force of impact, pulls the bodies of the driver and front-seat passenger firmly into their seats. Seatbelt pretensioners are a component of the seatbelt system which locks the seatbelt in place during a crash. The pre-tensioner is an addition to the basic seat belt. While the basic has been to reduce serious injury and save lives, research and crash testing has shown that the seat belt in itself is not perfect and that it can be improved. A GM seatbelt pretensioner recall is under an upgraded investigation by the U. National Highway Traffic Safety Administration (NHTSA) after vehicle owners continued to complain about flexible steel cables that separated.

According to a report in Carcomplaints. Under the seat by the center console there is a roughly inch tube. Inside the tube is a slug with a pyrotechnic charge sitting behind it. If your airbag light is on maybe this is one of the reasons.

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