air bag and seat belt backpack

by:GF bags     2019-09-23
About four years ago, I had a very serious car accident.
Everyone is fine. Don\'t worry).
When I went to the garbage station to pick up my items from the car, I noticed that the airbag was made of very strong nylon material.
Fortunately, I have never had access to this material before, but after noticing the material from the garbage station, I continued to think for a while.
A few years later, I handled it with a very good sewing machine and some extra time and the airbag fabric came back to my mind again and I decided to make the bag.
The bag is made primarily of airbags and comes with an integrated flash light to ensure safety while riding a bike.
I also made my own hardware for this package, which can double as a bottle opener.
You need two airbags for this project (
One driver, one passenger)
Two seat belts and a closed foam (about 1. 5 by 2 feet)
Nylon ThreadThick interface FabricWebbing or wrap edge FabricScissorsA rotary CutterAn industrial sewing machine MachineThe integrated lamp required: 5-35 red LEDs1 welded bread BoardA resident wire solidersoling IronAn ATTiny micro-controleran Arduino (
In tiny programming)A Bread Board (
Prototype for circuit)
Bottle Opener buckle needs: stainless steel SheetA water jet catara BlasterI search for airbag fabric on the internet and there is nothing.
There is no real market for used airbags, so no one sells it.
Fortunately, because no one really wants it, it\'s easy to get it from the garbage station.
The garbage station may be a strange place and I suggest you be careful when cleaning your air bag and seat belt.
I went to two different pick stations and pulled garbage stations for airbags and seat belts, and I still don\'t know if it was really cool I took them with me.
The following suggestions on garbage cleaning should be treated with caution.
I always go with a bag full of tools so it looks like you\'re looking for a specific car part.
I am not suggesting that the reason you are there is lying, but that I want to be in my heart forever.
People who pick and pull yards are usually Autobots, not soft commodity designers, so pay attention to this.
Once you find a car that exploded the airbag, you need a sharp knife to cut it off.
For this I used a tool knife with a sharp blade, but I think a sharp knife is OK as well.
Cut as close as possible to where the airbag is connected in order to use the round pass fabric as much as possible.
Seat belts can usually be removed from the same car with the same knife.
Pull out as many seat belts as you can from the car and bring it close to the base.
After you cut, don\'t be scared by the sound of the retraction mechanism wrapping around yourself.
Once you have two or three airbags and seat belts, you can get out of the yard.
They might let you check it out in the bag.
If you explain why you are collecting airbags and seat belts, they may not charge you, but it depends on the yard and who is working.
In some ways, the garbage station is significantly different from the fabric store.
Most notably, they don\'t have a big yard
Wide wire shaft of fabric.
Cut the airbag along the seam to create the fabric part as large as possible.
The largest rectanluar work I can get is about 24 by 32 inch.
When using recycled fabrics, it is often necessary to sew small pieces into larger pieces.
I do it with industrial curlers, but it\'s OK with a regular sewing machine.
The overall shape of the bag takes four pieces 24 by 32 inch, and the other two pieces are about 20 by 6.
I removed all the components from the three airbags, one from the driver side and two from the passenger side.
The basic structure of this package is quite simple.
There are two main panels, one for the front and one for the back.
Each panel has an external fabric (blue)
, Interface layer and lining fabric layer (white).
The panel with the back panel also has a layer of closed foam between the external fabric and the interface.
Each of the two panels has something else sewn on it.
The first panel is a panel with a Velcro strap, half buckle, for closure.
I also decided to sew a silhouette of the car accident on the panel to add the decoration and keep the foam in place.
The straps are made by simply sewing a tube. The tube is 2.
5 inch wide and 20 inch long.
After turning the tube out, thread the thin part of the tight foam through the tube and pass a 26 inch strap through the tube.
The straps should be flush to the top of the tube and extend 6 inch at the bottom.
This step is quite unnecessary, and I may do different things afterwards.
The purpose of the back pattern is only to maintain the position of the foam liner.
I think it would be cool to draw it out too, but in practice it\'s really hard to draw with a sewing machine and the result is not as much as I would like.
For this step, it is important to stitch the external fabric, foam and interface together, not the lining fabric.
Once the strap is finished and the foam is sewn in, you can attach the strap to the first panel.
Cut off two seat belt straps and pin one of them to the bag width of about 9 inch from the top.
The other one should be about 15 inch long, extending up from the middle of the first one.
This will be a closed belt.
Stitch along the top edge of the first strap and attach only the closed band at one end.
Secure the strap under this seat belt about 3 or 4 inch apart.
Now you can sew along the bottom of the seat belt and make an X where the shoulder straps intersect.
The second panel is constructed the same way.
The seat belt on the panel supports the other half of the closed buckle.
If you want to add any extra internal pockets, it\'s time to do so.
When a package is still in half, adding features to it is much easier than adding features retroactively.
I chose to add some built-in-
Put LED lights into the bag with integrated wires and switches.
I wrote a small micro-controller called ATtiny using Arduino that has a custom flashing mode.
After making the circuit prototype on the breadboard, I welded five LEDs and all the other necessary components together with all the components to a small board.
I installed the light inside the sewing circle of the back panel of the package.
I use two large holes on the weldable breadboard as mounting holes for threads.
The wire then extends between the interface and the padded fabric into a small pocket on the front panel with a battery pack inside.
Finally, the wire passes through the rear panel to the switch at the bottom of the shoulder strap.
This is the hardest step for your sewing machine.
You will sew seven to eight layers of fabric in the thickest part.
Place the two main panels together so they can face each other and fix the bottom and sides together.
Add a 16 to 20 inch harness strap between the two panels.
These pieces form the bottom of the shoulder strap.
They should point up at a 45 degree angle about 4 inch from the bottom.
It\'s hard to place these perfectly, so you can sew them on one of the panels before this step, if you want.
Now simply sew along these three sides.
If you have a serger, it\'s a good idea to use it in this step.
If not, I would suggest covering this seam with some sort of seam tape or extra tape to prevent it from wearing out.
When the two halves of the bag are sewn together, you can now give it more shape.
Grab the bag at the bottom corner and form a crease at the seams.
This corner seam should be about 3 inch from the corner of the bag, just below the strap that was sewn in at the last step.
This will give the package a bottom and side without adding additional panels.
Once the bottom seam is created, you can turn the bag to the right --side-
Appreciate your work again, but you are not finished yet.
My original intention was to use the hardware on the seat belt buckle, but they are not ideal for the length adjustment of the shoulder strap or closure system.
Fortunately, I can use a high power water jet cutter and am able to cut out custom buckles from stainless steel sheets.
I then mold the end into a bottle opener with a mold grinder and soften the edges a little with Dremmel.
To connect the buckle, simply pass the strap through the top ring on the buckle and put it back into the tube of the strap.
Now sew a few stitches at the bottom of the strap and pass the lower half of the strap through the other two gaps on the buckle.
The bottle opener part of the buckle will remain unused until you have the bottle to open.
The final stitching will complete the top handling of the bag.
Sew a thin strap on the top edge of the bag to create the structure and protect the top edge.
You finished your bag. Cool!
You can wear it in town and impress your friends with your sewing skills.
The light at the back is great for night bike safety, but if you are planning on riding a bike, it is recommended not to use the bottle opener for alcoholic beverages.
It is illegal and dangerous to ride a bike.
We already have a lot of airbags to make more backpacks and we don\'t need to cause accidents in order to get them.
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