Belt device
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Belt device
What does a jammed belt mean?
What will be required for repairs? Tools
Effect of frost
How to install the rear belts
If the belt does not come out of its slot, it is most likely jammed. To fix the problem, you need to understand the principle of this element of the car. With such a breakdown, there is a high probability that it is the locking mechanism that is not working correctly. Sometimes the belt may not stretch after an accident. There is a special technology for eliminating such breakdowns.
The first step is to understand the seat belt design. There is a special element inside the locking mechanism that is responsible for fixation. It looks like a ball that moves through levers. At the same time, it clings to the gears of the coils.
The seat belt latch reacts when it is pulled out too quickly, blocking the ball. It is in this system that problems may appear over time. In this case, the belt may not stretch or, conversely, may remain locked in the fastened position.
Checking the condition of the seat belt
To ensure proper operation of seat belts, they should be checked periodically.
In order to do this, you need:
- check the condition of the straps for mechanical damage;
- find out if the straps are twisted (to do this, the belt must be pulled out to its full length, if necessary, correct it and return it to its original position);
- check the movement of the belt - it should retract on its own (otherwise, you should inspect the place where it enters the retractor and, if there is dirt in it, clean it with a soap solution);
- check the locking force of the lock - it should firmly hold the metal tip of the belt, preventing it from being removed without pressing the button.
If during such a check damage is discovered that cannot be eliminated by washing and blowing with air, the entire device should be replaced.
What does a jammed belt mean?
If the seat belt does not pull out of the installation socket, it is most likely jammed. To understand what this means, you first need to understand how it works. When the belt does not extend, this indicates a failure of the locking mechanism or that the belts were jammed as a result of an accident. But first, let's look at the principle of operation.
Vehicle seat belt
Inside the blocking device there is a sensitive element responsible directly for blocking, which is made in the form of a ball. This ball, moving through a system of levers, clings to the body of the coil gear. If the belt is retracted too quickly, the spool disc puts more force on the screw surface, thus blocking the ball.
Seat belt buckle
The seat belt buckle (also known as the seat belt latch ) is a latch located on the side of the seat into which the seat belt itself is inserted (Fig. 1). It is extremely rare for a seat belt buckle to fail. But apparently I was lucky and encountered this problem.
Rice. 1. Seat belt buckle assembly.
At first I didn’t want to describe this problem at all. However, after studying search engine queries, I found out that several hundred people a month are interested in this topic. And this is not so little. Consequently, the security lock may not only break for me))).
So, what exactly is the problem? I came to the car service center and solved it. But! Firstly, if you have been to our car services, then you know that it is better not to go there again. Secondly, the malfunction is really rare. It’s not a fact that everything will be fixed for you on the same day (there may simply not be a spare seat belt buckle in the warehouse). And if you have an expensive foreign car, then even such a trivial repair will cost significant money.
There is a second way - go to the store and buy a new seat belt buckle. That's exactly what I did. However, this trifling item turned out to be in short supply. I had to visit several stores before I found it, and even then the seat belt latch turned out to be not original, but only similar, and cost me 350 rubles. I had to slightly bend the bracket that is attached to the seat, but in the end I put it in place.
However, there was a simple and cheap alternative - to fix the faulty latch. Yes, you will have to spend a little time, but I spent the same time on shopping trips. Again, 350 rubles is not a lot of money, but it’s still money. It is better to pour some gasoline into the tank on them. In short, I propose to repair the seat belt latch here together with you. More precisely, I will repair, and you will read a text report about the work performed))). We will talk about a lock for the Lada Priora, however, the seat belt buckle device may be similar for other VAZ models, and maybe for some foreign cars.
So, first we need to disassemble the case. The case is actually not collapsible. So you will have to divide it into two halves along the seam with a screwdriver or knife. Having disassembled the case, we will see something like the following (Fig. 2).
Rice. 2. Seat belt buckle mechanism.
Here the numbers indicate:
- Seat belt retainer.
- Security lock lever.
- Roller.
- Spring.
When we insert the belt into the lock, it presses on lever 2. This lever moves back and allows latch 1 to latch the belt. Spring 4 acts on roller 3, and roller 3 presses on the latch, which snaps the belt into the lock. In my case, one end of spring 4 broke off (Fig. 3), its force became insufficient to influence the latch, so the seat belt buckle stopped working.
Rice. 3. Broken spring.
You are unlikely to be able to buy such a spring. You can try to get it from another castle, but this is also not an easy way. I chose a different method - I made the spring myself. In order to make a spring, we need a springy wire with a diameter of approximately 0.5 mm. Such wire can be “obtained” from an ordinary spring by straightening it. From this wire we bend a spring similar to the original one. See the result in Fig. 4.
What will be required for repairs?
For the reasons mentioned above, sometimes the seat belt does not extend. What to do? Advice from experienced auto mechanics will help. First of all, you will have to disassemble the casing and remove the coil. In some models, you will have to dismantle the seats in the place where the breakdown occurred.
Repairs can be simple or more complex. In some cases, you have to completely change the coil. For some machine models, you will need to prepare special tools. But repairing a seat belt yourself will help save quite a lot of money in the family budget.
Tools
To disable the lock if a corresponding signal appears, the entire mechanism will need to be cleaned. To do this, you need to thoroughly prepare in advance and collect all the necessary tools. so what to prepare:
- a Phillips screwdriver, preferably a short one;
- flat head screwdriver;
- a wrench set to “17”, it will be more convenient to use a socket wrench;
- stationery pin;
- syringe with tube;
- some gasoline (lighter fuel is ideal).
Read, it may come in handy: Front and rear glass - replacement and tinting
Phillips head screwdriver. Screwdriver with slotted tip 17mm wrench Stationery pin for fixing Syringe with tube Gasoline for lighters
How to change seat belts on a VAZ 2114
How to disassemble and reassemble a VAZ seat belt
To remove the belts (at least the front ones) you will need a flat screwdriver to remove the plugs and a 17mm wrench.
If it’s written that it’s not allowed, then we have to go there and unwind the belt from the reel. To avoid holding it all the time, you can insert a screwdriver.
This is necessary to free up access to the locks. Using a thin screwdriver or a suitable object, press out the spacer nails.
Here's what's under the cap. This is the blocking mechanism. The white plastic tendril comes off the gear only in a certain position of the belt, in which it sits in the car.
A metal ball steers with a tendril.
There’s nothing complicated and not a dozen details, but as the frost gets stronger, you’ll stretch the horseradish belt. What was done; All grease and a little dirt have been removed from the metal surfaces, the L-shaped plate pressed by the ball is slightly bent towards the ball itself. Removed burrs from ratchet stopper.
The plastic there is soft, the nail file rules. When assembling, don’t forget to put on a small spring, it’s not visible in the photo, but it’s hard to make a mistake and you don’t have to put the lid on very tightly so as not to pinch the ratchet wheel.
The test drive was carried out using a freezer. After an hour at -18. The trouble is gone, but so is the frost outside. Now about removing the belt from the reel
You can take out two tight loops, but putting them back in will be very, very difficult.
Now about the spring - everything is fine with me, but since I removed it, I took it apart for those who suffer.
Effect of frost
Sometimes the seat belt latch may not work due to extreme cold. This will not require changing any parts. In some older vehicles, the insulation of the mechanism may not be sufficient. This causes the belt to jam.
In this case, the oil that lubricates the system becomes thicker in the cold. You will have to disassemble the coil and lubricate its elements with a special substance. It must be frost resistant. This, for example, could be silicone grease or lithol.
In some cases, the situation can be corrected by bending the metal “claw” of the ball mechanism at a smaller angle. When the coil is positioned vertically, the retainer should not come into contact with the gear teeth. This should only happen when the bobbin is tilted.
These simple steps will prevent the squib from accidentally firing. Otherwise, you may be injured during the repair process.
The coil housing needs to be opened. Most likely, the spring of the tape return mechanism has failed. This element can be replaced. It will be easier to get it out than to install it in its original place.
Modification of the inertial seat belt of the VAZ 2114
Gradually, the seat belts on the VAZ 2114, VAZ 2113, 2115 begin to jam; it is difficult to pull it out of the reel, even if you pull it very slowly. Here are the two most common problems that arise with the seat belts of the VAZ 2114: they jam or are pulled out very tightly. According to the rules, you cannot fix defects in seat belts with your own hands, otherwise the manufacturer will not be responsible for the proper functioning of the belt and injuries sustained in an accident.
Some locks and retractors are designed so that once disassembled, the structure cannot be reassembled. However, you can blow it out with compressed air. So when modifying seat belts, you do so at your own peril and risk. First of all, we remove the belt reel from its regular place; to do this, just move it forward and tilt the backrest forward. Next, we determine the side where the blocking device is located. This can be determined very simply: shake the belt near your ear, where the ball will ring, that’s where the blocker is located. Another option: completely unwind the belt; the blocker is located on the side where there is a plastic square on the sidewall. The inertial reel consists of: a housing, a retracting spiral spring, an inertial mechanism, a ball, a control and a locking ratchet. If you accidentally disassemble the reel from the other side where the winding spring is located, then you need to be prepared for the fact that the spring may fly out and cause injury to you. So safety comes first! So, remove the cover; this must be done carefully and in a horizontal position. We disassemble the coil and get to the blocking ratchet. The rectangular body contains a ball that blocks the belt when the reel body is tilted. We get to the rubbing elements, remove the old lubricant, which has now become like a dry substance.
The new lubricant should not thicken in cold weather. For clearer operation of the seat belt mechanism, you need to bend the bracket, or rather, bend the copper tab on which the ball acts. Due to the influence of the weight of the ball, the copper tab unbends a little and the belt begins to work worse. This means that you need to reduce the bend angle of the copper foot so that when the coil is in a vertical position, the latch does not engage with the teeth of the coil. You need to make sure that when the coil is tilted, the lock is activated. Some car enthusiasts simply throw away the block with the ball and think that seat belts will work without problems. However, this latch is activated not only when the car turns over, it is also an inertial mechanism and blocks the belt even during sudden braking and strong shaking of the body. Therefore, there is no need to remove anything from the seat belt reel. Assembly is carried out in reverse order. After this modification, the seat belt reel will work well in any frost. Remember that the seat belt is not made to be worn only when you encounter traffic police officers. It is designed to keep you alive and healthy. So it is advisable to fasten your seat belt before starting the trip and unfasten it only after you have turned off the engine.
Removing and installing rear belts
Rear seat belts are an extremely necessary item to protect passengers from injury in the event of an accident. Unfortunately, many drivers previously neglected safety and abandoned them due to small fines for their absence. Now the situation has changed for the better, and many are interested in how to install them. We’ll talk about this too, but first we’ll find out how to remove the seat belt on a VAZ 2114.
For this you will need:
- ratchet;
- head at 17;
- screwdriver with a thin slotted blade.
The belts are dismantled in the following order:
- Remove the seat belt buckles located on the floor.
- Use a screwdriver to pry up the plastic cap located near the threshold and remove it.
The rear seat belts of the VAZ 2114 should be installed in exactly the same order, but in reverse order. After installation, check the condition of the lock and the smooth running of the belt.
How do they work
Before starting repairs, it is important to understand exactly how seat belts work, what are their features, and what devices generally take part in protecting the driver and passengers.
- The coil lock is made on the basis of a ratchet mechanism, which is locked by a sensitive element. Its role is played by a pendulum with a semi-spherical support. In some cases, this is a ball of metal placed in a sphere with a large diameter.
- The pendulum or ball moves, while the ratcheting gear of the reel is fixed to the body through a system of levers.
- A flywheel disc is located on the gear axis on screw splines.
- When the straps are slowly tightened, the disc rotates with the shaft due to friction, but does not lock the reel.
- If you make a jerk, the disk will put more pressure on the screw surface, acting by inertia, overcome the friction force and block the ratchet, moving along the screw splines.
Checking status
When driving, the driver and his passengers must wear seat belts.
This node will only provide security if it is used. The problem for many of our citizens is that they wear seat belts not for the sake of safety, but to avoid fines for violating traffic rules. That’s why many people simply throw on the tape without putting it into the lock, creating an imitation of a fastened belt for the traffic police.
You should always be sure that your seat belts are functioning properly. Therefore, it is recommended to check them periodically.
New belts
There are several useful recommendations for this.
- Check whether the belts are twisted due to improper use.
- If the tapes are twisted, they may jam and retract incorrectly.
- Pull the belt out to its full length, straighten it and return it to its original position.
- Remove the tape completely and let it come together on its own.
- If the device jams when pulling in and out, check the condition of the tape, dirt, grease and other defects.
- Washing can only be done with a mild soap solution. If it is impossible to rinse with a weak solution, the belt must be replaced.
- Make sure the belt attachment points are secure and in good condition. All bolts must be tightened tightly.
- Check the condition of the device's fastenings to the body. Sometimes on a VAZ 2110, traces of corrosion appear in that area. All corroded elements must be replaced.
When replacement is required
There are several situations in which it may be necessary to replace just the tape or the entire device assembly.
We invite you to familiarize yourself with these situations in a special table.
What to change | Reasons for replacement |
Belt replacement | — The threads on the ribbon are torn or frayed — The loops broke on the edges of the belt — The braid bent — There are cuts or tears in the tape |
Replacing the complete device | — The belt buckle is fixed rather weakly, there are suspicions of unreliability — The unlock button does not work or does not perform its functions well — The buckle cannot release the belt — Cracks appeared on the surface of the buckle - You have to apply more force to release the belt |
The condition of the device should be checked periodically. Only there can you be sure that your safety is under reliable protection.