Despite the fact that for the first time the level lock appeared in the early nineteenth century, it still remains one of the most popular means for locking doors, and its design is now considered to be the most protected from both mechanical and intellectual » Hacking.
Device Features
The secret part of the lever lock is a package of plates (lever) with curly cutouts. When opening the lock, they are pushed by special protrusions on the key beard.
The beard of the key, if it is used "correctly", catches a prong located on the shank of the deadbolt, and the pin on the crossbar passes through the slot and unlocks / locks the doors. Otherwise, the lever will block the system.
Such a lock can have from one to five bolts, depending on its series (light, light, heavy).
To increase secrecy, a double-bitted butterfly key is often used for a lever-type lock. With the same number of levers, the more prominent the “wings” of the key, the higher the secrecy of the lock itself.
Pros and cons
Pros:
- Locks are unpretentious and durable - the work of high-quality products involves many years of operation, and jamming of mechanisms in them is a rarity.
- Reliability - the probability of failure of the mechanism is close to zero.
- Such locks are highly resistant to mechanical breaking (drilling and knocking out).
- These devices resist vandals - if foreign objects get into the keyhole, the mechanism does not fail.
Cons:
- Massive key, from which it is quite easy to take an impression and make a duplicate.
- Closed with key only on both sides.
- By picking lockpicks, there is a possibility of "intellectual" hacking.
Difficulties in choosing
Locks of this type are divided into classes according to resistance to breaking. There are only four such classes. All of them, except for the first one, are subject to mandatory state certification. The model of the lever lock is selected individually, taking into account the design features of the doors: narrow/thin, metal/steel, wide/massive.
Keys for such locks are relatively heavy and large, usually have double-sided barbs. This increases the number of secret combinations. In addition, you can choose options for keys that exclude unauthorized duplication, as well as those that can be folded.
Below we offer a small overview of models of lever locks for doors from popular manufacturers that have earned the recognition of consumersdesign complexity of the mechanism, stable quality, high performance of the design and burglary resistance.
Mauer SUMO
This 3-way, 3-way lock for metal doors is a high security novelty in the world of locking systems. A device with exceptional reliability and the ability to mount on massive steel doors.
Mechanisms and body of this lever lock for metal door are made of high quality steel, which is highly durable. The use of two different types of locking mechanisms with a unique double closure works separately from one another. The high degree of secrecy and protection against burglary of the cylinder mechanism and the lever lock, which works with an asymmetric key, ensure the blocking of the entire structure. This feature greatly increases the life of the mechanism. From the inside, unlocking is carried out by a manual spring mechanism.
The keys used for this lock have standard sizes. It will not cause you any inconvenience when wearing them. Unlike keys for standard metal door locks, which are usually very large. If the original key is lost, the design of the lock allows you to replace only the main or only the additional mechanism, but not the entire system.
Mottura Castle 52.771
This model is a lever single-system standard of simplicity and quality of a lock for an entrance metal door. There is a reversible latch. There isthe ability to connect additional locking rods.
The lock is equipped with a secret mechanism with twisted springs and a double bar. The secrecy of the device can be changed by installing another module with levers, which is equipped with a new set of keys. The main part of the levers has false grooves, the part can be set with a key and be without springs. The keys are not symmetrical - at six different heights, the barbs have different secrets. The described solutions are directed by the manufacturer to prevent intelligent hacking methods.
In addition to the lock, the set includes a strike plate, a set of five keys, external and internal decorative lining.
Securemme 2500F
This is the main lever lock for doors under the handle with three-way locking, a master key and a replaceable nuclia. This device provides "freedom of use" - the design of its system allows you to remove the additional locking mechanism at the request of the consumer.
Features:
- reversible latch with simplified rearrangement;
- from the ingress of debris and dust into the mechanism protects the closed case of the lock;
- protection against driving inside crossbars;
- includes 5 keys and a mounting key;
- in case of loss or theft, the ability to change keys using a replaceable secret part (nucleo);
- end plate color - nickel;
- four bolts with a diameter of 14 mm.
Level lock "Guardian 40.11 QUATTRO"
This model has an innovative lock design and working principle -window type levers and gear mechanism.
This lock has a unique protection against the most common hacking methods:
- protection against self-impression key;
- protection against opening with a master key;
- internal armor plate, which is installed on the bolt shank;
- the presence of an external armor plate;
- drill protection;
- The cut-off toothed sleeve and the presence of false grooves when turning the key block the side hole of the lock bore and restrict access to the levers of the master keys through the keyhole.
Function of disconnection from the latch handle - in the closed position of the lock, even when the handle is pressed, the latch remains in the locked position.
Ease of turning the key is ensured by the presence of window-type levers, which eliminate the possibility of a slip and allow the key to be rotated with ease.
Additional options:
- long keys;
- additional number of keys;
- making locks with a single secret.
Recoding lock
Cisa 57685 CAMBIO is a "bottom" lock that serves both to fix the door with a latch and to lock it.
- Diameter of crossbars - 18 mm.
- The latch is removed with a handle or key.
- Full locking in 4 half-turns of 180 degrees.
- 5 keys included and master key.
- Outreach - 30 mm.
Lever locks from CISA have a systemrecoding New Cambio Facile, which allows multiple transitions to a new set of keys. Very simple conversion process. Such a system is convenient in cases of loss or theft of keys and the risk of their falling into the wrong hands. Initially, the lock is equipped with a conversion kit and one installation key. Recoding can be done an unlimited number of times at any time. The lock comes with five new keys after recoding.
CLASS company locks
Production of particularly complex models of locking mechanisms to prevent unauthorized access is the main specialization of CLASS.
Affordable for the average consumer, the price of “Class” lever locks allows their models to successfully compete with similar products from famous world brands.
CLASS GS-MLZ lock can be mounted on right and left doors that open both inwards and outwards.
- lock parts are made of anti-corrosion alloy and protected from corrosion with a protective and decorative coating;
- in the closed position, the fixation of the door is ensured by a latch, which is controlled by handles both from the outside and from the inside of the door;
- bolt is made in the form of a three-bolt mechanism, diameter - 12 mm, deadbolt projection for 2 turns of the cylinder mechanism - 26 mm.
- the type of cylinder mechanism determines the number of security combinations.
Level pad lock
The lock "Elbor Lazurit 1.02.051" is designed for installation on light interior and exteriormetal doors. Suitable for right and left doors as an additional lock.
There is a system of protection against sawing rods and drilling. This model comes without a handle.
Package:
- Castle.
- Set of pads.
- 5 keys.
- Mount kit.
- Installation and operation manual.
METTEM SG8 842.0.0 Chrome
This mortise lever lock is suitable for installation both in the doors of metal cabinets and for entrance doors as a non-main locking device. The lock is equipped with one direction of locking - three steel crossbars with a diameter of 14 mm are extended from the body by 22 mm. The door is locked with such a lock for two full half-turns. The lock is equipped with a high-quality alloy front plate, as well as two stainless steel overlays for the keyhole.
The model has three brass keys with a plastic head and no latch. That is why it is recommended as a second locking device.
Two-system FIAM ISEO 618 DP-1
This model is the main two-system lock of the highest quality. Interchangeable in size with similar locks CISA, Mottura.
The lower bolt of the lock is controlled by EURO DIN - a standard cylinder, which is purchased separately according to your capabilities and door thickness.
Additional rods and 4 upper locking bolts controlled by lever mechanism - 144thousands of combinations, 6 levers. The operation of the lock mechanism, in comparison with analogues, is softer and smoother.
Package:
- two decorative overlays;
- 5 main keys;
- AMS system - protection against master keys;
- RBS system - class 6 knockout protection.
The lock is equipped with a reversible latch. Experts recommend additionally installing an armor plate and an armor plate on the lever part of the mechanism.
