Do-it-yourself unpickable invisible lock. How to make a lock for a garage with your own hands Hidden lock with your own hands

There are no visible locks or key holes on the door, and it does not open, as if locked from the inside. Having become acquainted with its secret, one can say so, since there really is a latch on the other side of the door. But it is locked... from the outside, although at first glance it is not clear how.
The secret is “hidden” in the hexagonal head of a furniture bolt, lost among the screw heads on the surface of the door. Insert the hex key into it and give it half a turn - the door will open immediately.

The fact is that at the other end of the bolt, on the other side of the door, a simple latch strip is mounted. When the bolt head is turned, the latch follows its movement, locking or releasing the door.

Making such a secret lock is not difficult, it is accessible to everyone. Using a needle file or a file, a flat flat is made on the shank of a furniture bolt, onto which a steel latch strip is installed, which has a slot for the flat of the bolt.

Rice. 1. Secret latch lock assembly

Rice. 2. Assembling the secret latch:
1—door; 2 - furniture bolt with flat; 3—washers; 4 - nut; 5—latch rail; 6—nut

closed position

Secret constipation is assembled as follows. First the door is drilled through hole under the threaded part of the bolt body, and then use a thicker drill to make a recess under its head so that it is recessed into it flush with the surface of the door. On the opposite side of the door, two washers are put on the bolt, which are pressed with a screw-on nut so that the head of the bolt is recessed. A latch strip is put on the flat of the latter with its slot and tightened tightly with a second nut. That's it, the secret castle is ready.

Insert a hexagonal key into the head of the bolt and turn it - along with the bolt, the latch will turn: the door is closed, but you can’t see how!

A homemade padlock is no different in appearance from thousands of its fellows guarding storerooms and cottages, sheds and utility rooms, shops and warehouses. Except for one stunning detail: it opens... with a screwdriver.
Even a professional burglar cannot open my lock, although the key is indeed a small and thin screwdriver, like a knitting needle. The secret is not in the key, but in the lock!”

Someone will say: why make a lock yourself when it’s easier to buy a ready-made, factory-made one? But even for the best of them, attackers select the keys, and even figure out the secret of the coded ones, with fixed intermediate positions of the mechanism, by ear and touch. And in winter there is a common problem: the mechanisms of factory locks freeze so much that they need to be warmed up.
But everyone would like to have a locking device that is devoid of these shortcomings, and, moreover, the most “cunning” one, which cannot be used with any master key. I have developed a whole series of such padlocks for various purposes. Their highlight is the structurally guaranteed security not only against code selection, but also against turning out the handle of these locks with a crowbar.
Below is a description of the design of such a lock and technological features manufacturing of its parts and accessories. I am not afraid to reveal them, because the conditional secrecy of a device with these dimensions and design diagram can have over four thousand code combinations.

Homemade lock device

The lock has a body, a shackle, two bushings, a locking ring and two pins. The bushings are fixed in the body by a retractable arm that fits into the semicircular grooves of the bushings. In the latter, pins rotate on the threads, moving along the holes in the body and acting as locking elements. There are also semicircular grooves on the cylindrical surface of the pins, which, at a certain position in the bushings, coincide with a blind hole in the body for the lock shackle - this corresponds to the “open” position: the shackle is freely inserted into the lock body until it stops. If you now insert a screwdriver key, it will fit into the slot of the pin; when rotating, the pin with its cylindrical part will enter the groove of the arch and lock it. The code for opening will be the location of the groove on the pin and the number of turns of the key. To increase the security of the lock, there is a second pin with its own code.

The mechanical strength of such a unit against burglary is undoubtedly much higher than in most designs in which the shackle is fixed with a small cross-section crossbar - the weakest part. It will not be possible to select the lock code “by touch”, since at the moment of opening the key is in the groove of the shackle and does not allow you to feel whether it has been freed from the locking elements?

The through hole for the long end of the shackle is drilled from below to match the diameter of the locking ring, which prevents it from coming out of the body, which would lead to disruption of the lock assembly.

Making a homemade castle

The proposed lock, as already noted, is not only particularly strong, but also a thin mechanism. However, since we are not focusing on its factory production, we will omit tolerances and fits in the drawings: the required accuracy can be achieved through joint processing and fitting of parts that are quite accessible to the most modest home craftsman’s workshop.

First, from a round steel bar with a diameter of 10 mm, we will cut a blank 162 mm long for the bow. We will make a chamfer and two grooves on it, then bend the bow (with any lever with an eye or a nut welded at the end).

We will machine two bushings (from bronze) and two pins (from steel), as well as a blank for the lock body (from duralumin, bronze, brass). In the workpiece we drill two holes with a diameter of 6 mm for the bushings, clamping it in the chuck lathe with an eccentricity of 5 mm. Then, inserting the bushings flush, at a distance of 8 mm from the end, drill a through hole “C” with a diameter of 10 mm - for the long end of the bow. Having marked the bushings “right” and “left”, we remove them from the body.

Fig. 1 Homemade combination padlock:
1 - body (duralumin, bronze, brass); 2 - bow (steel 40X, rod with a diameter of 10): 3 - bushings (bronze); 4 - retaining ring (steel, wire with a diameter of 2.5); 5-pin (steel 40Х, 2 pcs.).

Next, insert the long end of the bow into the hole prepared for it in the body, allowing the short end to rest against the body; Let's mark this place (as the center of the blind hole "G") and, measuring the distance "a", bring it to 6 mm, grinding off the short end of the bow.
Now let’s first screw the pins into the bushings until they stop, and then turn them out to an arbitrary distance (but less than 4 mm) and insert the bushings into the corresponding holes in the body according to the marks “left” and “right”. We fix them by inserting the long end of the bow into the through hole, after which we drill in the body parallel to it the previously planned blind hole “G” with a diameter of 10 mm to a depth of 21 mm. To control, we will insert the short end of the bow into it and, if necessary, modify it.

Again, let's analyze everything down to the details - we have to cut through the slots on the ends of the threaded parts of the pins (for a key screwdriver) with a hacksaw blade (with a sanded groove). For ease of use starting position the splines should be the same. Let's assemble the lock again, but without inserting the short end of the shackle into the body; align the groove on its long end with the holes of the bushings. Using a screwdriver with a rod diameter of 3 mm through the holes in the bushings, check the freedom of axial movement of the pins; If necessary, we will polish the pins.

Fig.2. Marking a blind hole.

1- body (steel, hexagon 46...65); 2 - M6 screw (2 pcs.); 3 - spring washer (2 pcs.).

The subsequent steps are aimed directly at creating a secret code for the lock. Screw in one of the pins until it stops, then turn it out until its groove aligns with the hole in the body, counting the number of half turns. Let's write down the resulting number - this will be the code for this pin, corresponding to the “open” position. Let's make marks on the end of the case (sleeve) and the screwdriver-key for unlocking the lock.

To check, we will repeat the actions with a screwdriver-key blindly, counting to ourselves the code number of half-turns for a given pin, and if necessary, tighten the screwdriver until the marks align.

Let's repeat the same operations to create and check the code for the second pin. After this, remove the bow from the body and drill a through hole from below to a diameter of 12 mm to a depth of 10 mm.

Let's make semicircular grooves on the short end of the bow. To prevent an attacker’s hacksaw from overpowering the shackle, we will harden it and, if possible, oxidize the shackle and body against corrosion.

Now you can finally assemble the lock and install a wire retaining ring into the recess at the long end of the shackle, turning it until it fits freely into the prepared hole.

When making several of these locks, it is advisable to use a universal mandrel jig that eliminates markings. In this case, we will clamp the lock body blank in the jig using tightening screws MB and install it into the lathe chuck with end “B”.

Homemade garage locks have simple design and are opened with a special key. They are installed from inside the garage, which makes the devices invisible.

Such locks are made according to individual sketches of the garage owner, for which it is quite difficult to select a master key, which can be done for standard models of locks purchased in stores or markets. What types of homemade garage locks there are are discussed in this article.

Types and features of homemade garage locks

The garage is designed to protect the vehicle from harmful influences external factors and in order to protect it from theft. No garage can give a complete guarantee of car safety, but its safety largely depends on the strength and reliability of the garage door lock.

Garage homemade locks, like most of devices can be of several types.

They can be:

Mounted.
Mortise
Rack and pinion (see).
Invoices.
Mixed devices.

One of the main criteria that distinguishes these devices is the method of their manufacture.

They can be:

Factory products.
Homemade locks for the garage.

Each type has its own advantages and disadvantages.

Often the choice of product is determined by its price. If you want to purchase a reliable and high-quality factory device, you will need to pay quite a lot of money.

This is due to the fact that the lock will not be a simple factory stamping, but a mechanism assembled by hand by a professional. There are a number of points that distinguish factory products from handicrafts.

The main ones are: low quality and lack of reliability of many factory designs. In any case, for good devices you will have to pay a fairly large amount.

When making a lock, due to the desire to save money, you can lose in its quality, which can affect the safety of the car.

Advice: The installation of the structure should be approached very responsibly. You need to remember the basic rule: the lock that is not visible protects better.

The principle of operation of locks depending on their type

Homemade garage padlock.

This is the most common type of product. The entire mechanism of such a device is located in a suspended housing.

Locking is done using an arc or pin, which is inserted inside. For the structure to work, on the locked doors it is necessary to install special eyes into which an arc is inserted, with the help of which the locking occurs.

This type technical device has one negative quality, which casts doubt on its positive properties - it can be opened relatively easily. Such locks are hung from the outside, so attackers have access to it, and with the help of a master key it can be opened or simply knocked down.

Advice: This type of lock should only be used as a additional measure protection when the use of several locking device options is combined.

Homemade rack and pinion garage lock.

This is a fairly popular option for making locks. It is installed from the inside, and the locking process is carried out by several sliding rods.

The lock is opened with a special individual key, which is inserted into the hole and, when turned, pulls out the bolts. This type of device design is somewhat more reliable, but it can be hacked by sawing the locking elements or picking up the key.

Mortise lock.

It is quite difficult to install, and the reliability of the device is relatively low. This design can only be used as an additional measure of protection.

Easier to make yourself are locks for other types of garages.

These include:

Homemade garage lock– pinwheel, general form it is shown in the photo.

This is the name of a lockable system that works on the principle of a deadbolt. The lock version has a fairly simple design; you can easily make it yourself.

This device works according to this principle:

from the inside, special eyelets are installed on the two garage door leaves, which can be metal or made of wooden beams;
in the center of the gate, a pinwheel bolt is mounted on a through bolt, driven by turning relative to the center;
The ends of the turntable should fit into the eyes, and thus securely lock the doors from the inside.

In this case, there are no lock elements on the outside. This is the most reliable lock for a garage; breaking the gate becomes almost impossible.

Espagnolette.

This is the simplest, most reliable and effective homemade option for locking garage doors, which allows it to be used in most cases. An espagnolette is a metal pin that moves inside the eyes.

It is usually mounted on inside garage doors. This device operates on the principle of a valve.

Locks installed for swing gates.

This locking device is a type of latch, with the difference that the latch most often moves in a horizontal direction and is used with a single-leaf gate design. For swing gates, the locks consist of metal rods that move vertically inside special eyes installed on the gates.

To carry out the locking, a pair of holes about half a meter deep are made in the ground under the rods.

Tip: The strength and reliability of the structure should be increased by installing metal tubes of suitable diameter in these holes, which are then concreted.

This type of lock has a main drawback - it is locked from the inside, which requires the installation of an additional door. They can be used if the garage is built into the building of the house or in the courtyard of the estate.

How to make a simple garage lock

Instructions for making a simple rim lock with a latch, which is driven by a special individual homemade key, consists of the following:

Making the base of the castle. This is a metal plate approximately three millimeters thick, with a diameter of 10 millimeters.
Two linings are cut from the same metal:

width - 22 millimeters;
length – 120 millimeters.

The overlays are bent in a vice according to the sketches.
The valve is being manufactured.
A guide tube with an outer diameter of approximately 10 millimeters for the lock key is being prepared. Its length depends on the thickness of the gate. One end of the tube is cut at an angle of 60 degrees, as shown in Figure 4.
Assembly of the structure begins with welding the linings to the edges of the base

Tip: If parts are deformed after welding, they must be straightened. Minor distortions will be eliminated when installing the lock on the gate.

Four holes are drilled in the corners of the plate to secure the lock to the door.
The guide tube is inserted into the plate hole with a diameter of 10 millimeters, the bevel is inserted into the pads.
The tube is carefully welded to the base, while maintaining mutual perpendicularity.
The valve is inserted into the linings, in the middle between them.
Two screws with a diameter of M4 and a length of about eight millimeters are screwed into the valve. These screws are valve travel limiters; it is advisable to place spring washers under their heads.

The key is selected from a circle with a diameter of 8 millimeters, its length is 150 millimeters.

One end of it, approximately 25 millimeters long, is bent at an angle of 90 degrees.

On the other side, a cut is formed at an angle of 60 degrees.
A hole is drilled in the cut area.
The beard is made according to Figure 7.
The key is assembled according to Figure 8.

The secrecy of the lock is ensured by drilling key holes in the bolt below or above, the interval can be one millimeter, which will provide the lock with a large number of “secrecy” options. For these purposes, you can change size 12 according to Figure 5 within acceptable limits.

How to make a garage lock with your own hands is shown in more detail in the video. A high-quality lock in the garage is a guarantee of car security.

Leaving vehicle in the garage, we, first of all, protect it from adverse weather conditions, and also hope for its safety from theft. Tell me, have you ever thought about what exactly your car is protecting? Certainly, important factor are the materials from which the building is made, but the main role is still assigned to the lock on the gate. But even in such a simple question as choosing a shutter mechanism for a garage, there may still be problems. a large number of nuances: which one to choose - factory or homemade, cheap or more expensive? Our answer - choose homemade options. We will tell you why and how to make homemade security locks for the garage in our article.

Selecting a lock manufacturer Garage Doors faces all owners of garage buildings, and it is quite small. You either choose a factory product, or create a unique mechanism that is suitable specifically for your garage.

It's no secret that many car enthusiasts would rather buy this product in a store. However, if you buy a stamped lock for a garage, you are not sure that thieves will not be able to find a suitable master key for it. In addition, the quality of such bolts is often poor. Factory-made shutter mechanisms that have the appropriate quality, guarantee, and are assembled by hand are classified as products in a fairly high price category. Do you agree to pay such funds?

A homemade garage lock is a guarantee that thieves will prefer not to have to worry about solving the design and will bypass your garage space. If drawings of factory products can, if desired, be found on the Internet, then manual option– is unique, and finding the key to it is very problematic.

Main conditions of safety

Do-it-yourself garage locks must meet a number of requirements:

the mechanism must be completely hidden from the street;
It is advisable to use high-quality materials; it is better if the constipation is armored;
If possible, make combination homemade locks with a secret for the garage.

We study the classification

In general, homemade garage locks can be divided into two large groups– independently manufactured and altered. Self-production constipation is advisable if the appropriate components are present: quality materials, equipment (milling, lathes), equipment for steel hardening. Experience working with metal will also be important. Otherwise, even the most original lock will be easily opened.
The best option would be to remake purchased locks or individual components. This method will allow you to do without special equipment, while creating a single version of constipation.

By design, garage door shutter mechanisms are divided into:

mortise;
mounted;
invoices;
rack and pinion
pinwheel;
combined.

Each type has its own positive and negative sides, which should be taken into account during selection.

Padlocks

This type is considered to be the oldest and, unfortunately, unreliable type of constipation. Despite the fact that it is recommended to use hardened steel for their manufacture, such a lock can be easily knocked down with a hammer or sledgehammer, since the entire mechanism is located outside. In addition, the hinges of the device can be quietly cut with a hacksaw.

Mortise locks

Installing this type of lock in a garage is quite problematic, and for thieves it is difficult to break into such a lock. big problems. The door is simply knocked down or opened with a selected master key. Experienced car enthusiasts recommend using this type of lock as an addition to the main bolt mechanism.

Pinwheel

Garage turntable locks have a simple design, but a fairly high degree of protection. The principle of operation of such a lock is that on the doors of the garage, made of wood or metal, lugs are made into which the ends of the lock - turntables - are lowered. The latch itself is mounted on a through bolt in the center of the gate and is activated by turning from the center. This type of do-it-yourself garage lock allows you to reliably protect your car from thieves, since there are no external (visible) parts.

The main positive feature of a screw lock is its design. The main part of the mechanism is hidden behind the door, making it virtually inaccessible to thieves. The common components of such a design will be: a key, a screw, an outer bracket and a bracket with internal thread. Make a castle if you have a detailed sketch and equipment ( welding machine and a lathe) is not difficult.

"Falling" model

If you have considerable experience in locksmith work, then try to make the so-called lock with a “falling key” yourself. You will need 3 metal plates. Two of them will be used for making staples, and the third will be used for a bolt (latch) with slots. The next step is to make a gear-shaped drum with a hole for the key. The key also has its own specifics. Special slots are made in it for a metal rod (pin) with protrusions, the arrangement of which follows the holes on the drum.

Electromechanical option

This type of lock is a combined one; it combines a mechanical and an electric lock. Please note that such locks can be made by craftsmen who have experience working with electronics and mechanics. If you are not confident in your abilities, car enthusiasts suggest using a ready-made mechanism and choosing the appropriate electric drive for it.

In order to make such a lock, you will need a gear mechanism, an electric motor, a power supply and a mechanism control system.

Main advantage homemade garage locks- their originality. Thieves are familiar with industrial locks and how to install them. A homemade garage lock, if it is original enough, can put out crooks to a dead end, and this always frightens those who come “to the cause” and beats they want to continue.

It makes sense to make such a lock when there is access to good materials, steel hardening, turning and milling machines and so on. Otherwise the most original castle will simply be knocked down or broken by force. Another way is unusual use ready-made locks or their parts.

Photo homemade locks with a secret for garage:

Modification of purchased locks

If you do garage lock I can’t do it myself due to lack of necessary materials or technologies for processing them, then you can try finalize ready-made locks.

Exist different types locks:

invoices;
mortise;
mounted

The padlock It’s easy to knock it down with a sledgehammer, no matter how cunning its larva turns out to be. The loops can be cut with a regular hacksaw without much noise. The padlock is not a big obstacle for modern children's, very well equipped great tool.

Invoices And mortise locks break significantly more difficult. In essence, this is simply knocking down the door (this is especially true for mortise locks). For such cases, hackers use two methods:

opening with a master key;
sawing the bolt (bolt).

If there is a gap in the door that allows access to the deadbolt, then it may be sawed with a jigsaw for a few minutes.

Some types of locks proposed by craftsmen, for example, a rack lock with "secret" key, are too naive to protect against burglars. The only secret here is turning bar length on the key. The burglar will make this strip out of cardboard and cut it with scissors until the lock begins to wrinkle it. Next time the burglar will come not for reconnaissance, but to the point.

Security of the garage against opening should be considered a little wider than just choosing a lock. According to the location of garages there are collective located in the courtyard of a residential building or attached close to individual house or cottage. In many cases, the garage may be part of the house.

The worst case is collective garage.

But in Lately many garage communities put surveillance cameras, and they do it quite cunningly, they hire watchmen and it becomes increasingly difficult for car thieves to work.

A garage in the courtyard of a house is more convenient for the owner, especially if it is visible from the apartment window, and private garage with the house - it's very good. In the latter case, the garage can be protect the best thing.

For best protection garage should use durable metal gates And doors, those that cannot be knocked out with a sledgehammer. Homemade garage lock must be completely hidden from the outside, and its bolt must be armored. Such a lock cannot be opened with any master keys, or even ordinary keys. This electronic lock, controlled from a distance.

Another one, also very practical option, this is the installation hidden electric lock together with ordinary, mechanical. Moreover, you can even use a padlock. Mechanical lock serves as the first barrier that burglars will have to overcome. But after they do this, they will encounter a new, incomprehensible obstacle, get nervous and withdraw.

The most advanced for our time can be considered a hidden electric lock with control via radio interface. The key is miniature radio transmitter(key fob) transmitting a code combination. The receiver checks that what is received matches the given key and opens the lock.

To prevent advanced hijackers from using the intercepted key, transmitter and receiver change the code for next time according to a certain algorithm, so that it turns out "one-time password". This is called an anti-scanning system or dynamic code encryption.

But this not the cheapest option. The minimum price here is approx. 9000 rub.. Self-production of such a system will be much more cheaper for the money, but will require a fair amount of knowledge in radio engineering, electronics and programming, as well as the ability to solder very miniature parts.

Case Study

What can a car owner who wants to do well do? protect your car for little money?

One of practical options, suitable for a garage located close to the house, is given below. Apartment or house is good protected, and you can only open the garage from home.

Garage doors are locked only from the inside, using locks with powerful bolts, and it is advisable to disguise this power so that through open garage it was unclear what exactly was holding the gate.

From the side of the garage gate you can only take ram with the help of a truck, but this case goes far beyond peacetime conditions, when crooks prefer not to make noise.

The owner gets into the garage through a separate door V back wall garage. This door is locked too internal lock, but there is also a regular lock. Internal locks- These are solenoid-type electric locks that are controlled from home, via a cable that runs parallel to the garage power cable with mains voltage.

When the door closes with a regular lock, close and solenoid locks. Opening a regular lock with a master key won't give anything to burglars. And the owner himself, before leaving the house, opens the electric locks by supplying power to them and, thereby, unlocks the garage door for subsequent opening with a regular lock.

These electric locks should be installed so that they attract as little attention as possible.

Lock solenoids are usually powered by voltage 24 V and require several amperes of current to operate and much less current to hold open (unless equipped with latches).

Some of the electric locks have latches, also controlled electromagnetically. But most often they come across electromagnetic locks, which have a beveled crossbar and fix it when the door is closed. Opening occurs after current is applied.

According to the rules fire safety, when people are in the garage, the doors must open instantly And unhindered! How to do this is up to the owner, but this is the rule Necessarily must be carried out.

IN winter time Maybe freezing of crossbars, but you can fight this and it’s quite simple.

To do this you should warm up electric locks. The lock body is wrapped with fiberglass cloth, then evenly with nichrome wire, thickness 0.3-0.5 mm.

The length of the wire is selected such that the solenoid warms up when room temperature until about 70 degrees Celsius.

The voltage source used is the same from which the solenoids are powered. It must provide current not less than 8 A.

The nichrome wire is then covered with a new layer of fiberglass and you can also make a tin casing on top, and connect the nichrome wires to copper wires (preferably by welding, using coal from a battery and boric acid) and carefully remove outward.

In winter, after thaws and repeated frosts, it is enough turn on heating a few minutes before the doors open and the locks will work trouble-free.

When working on this project, it is important don't show it to anyone the existence of such a cunning system and don't tell about how it works. All car owners love to brag to each other about their technical achievements, but this is not the case. Because the garage power cables(220) and lock management can be extended in advance corrugated pipe, take advantage of this and don't tell anyone anything.

Let everyone think that you are spending light in the garage. Otherwise, crooks can dig up the cable and open the garage according to your instructions.

Conclusion

If you wish, you can protect your garage well from car thieves. There are two ways to do this. Either spend a lot of money on perfect locks and put the garage under police protection (which also costs money), or show a little skill and make tricky lock for the garage with your own hands. By the way, rich people, despite all the cool technologies they pay for, are “bombed” more often and more successfully, because their garage and car are known to a wide range of people.