CZ2013114A3 - Assembly of slave and redundant master keys - Google Patents

Abstract

The slave and spare master set consists of a slave key (1) and a new master key (11), and the slave key is provided with a reserve hole (9) on the side rib of its working portion (5) and its master key is provided on its side rib. the working part through the opening (17) which corresponds to the spare key hole (9) of the slave key, a constant depth with the lead (10), the reserve opening (9) and the opening (17) being formed at a distance corresponding to 1/2 of the axis distance ( 12, 13) of the individual teeth (14, 15) from the axis of the third tooth (13) towards the key stop (3) and at the same time the reserve opening (9) and the opening (17) are placed on the rib of the work key (5) ( 1, 11) so that the depth of adjacent teeth (14, 15) is not reduced by more than 30%.

Description

Technical field

The invention relates to a set of slave and reserve master keys from the area of door locking systems of the so-called master key system, and allows for an extension of the use time of the slave keys regardless of the loss or theft of the master keys.

BACKGROUND OF THE INVENTION

The master key system is a system of locking objects that increases security of access and user comfort. Each user of the system has a certain key, which opens, for example, only one door for this key, but another (parent) user with its parent key opens, for example, the whole house or its parts, or floors, etc. controls the entire object system. Furthermore, there may still exist between a master key and a master key, group keys that are "subordinate" to the master key that control certain parts of the object. Subordinate (user-end) keys then only allow access to a specific location.

The essence of this system is therefore that each user opens with just one key just the door that is intended for him. This eliminates the problem of carrying a large number of keys, reduces the cost of re-entering keys for new doors (inserts), reduces the possibility of access to unauthorized persons, and the convenience of individual users is also a significant consideration.

The general key system is particularly suitable for offices, hospitals, industrial buildings, schools, etc., but it can also be used in apartment buildings where it allows residents to use one key for common areas (entrance to the house, cellars, etc.) and for your own apartment.

In buildings with several hundreds or even thousands of doors and other locking points (switchboards, cabinets, etc.) it is inconceivable to use separate lock cylinders without a master (general or group) key. The special importance of the master key system lies in the possibility of immediate intervention by the master key (general or group key) in extraordinary situations such as fires, cases of danger to persons or property in the building, etc.

The disadvantage of this system, however, is that the "mechanical" keys may be lost or stolen and thus misused by unauthorized persons.

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Currently known, but rarely used, so-called key management systems for depositing the key when the user does not use the key, eg outside working hours. However, the vast majority of systems are used in such a way that the key is issued indefinitely. This means that the user carries both slave (end) and parent (group or general keys) away from the building and increases the likelihood of loss or theft of these keys, thereby jeopardizing the safety of the building if they are lost or stolen.

If the situation occurs that the parent, ie the group or general key has been lost or stolen, it is necessary to replace the lock cylinders respectively. It is necessary to exchange-withdraw from circulation (from users) all subordinates, ie end or end. group keys, which is very time-consuming, organizationally and financially demanding.

There are no known technical solutions using the purely mechanical principle, which would enable the exchange of the master keys, ie group or general keys, to keep the original slave (end) keys in circulation.

SUMMARY OF THE INVENTION

The essence of the invention is to change the parameters (tumbler sizes) of the lock cylinder by means of a sophisticated calculation and on the basis of it to create a modified "new" parent key. In fact, only the lost parent key is exchanged and the affected group of lock inserts, which were openable to the lost or stolen parent, ie the group or general key, is modified.

Furthermore, according to the invention, the individual slave keys are provided, in contrast to conventional slave keys, in the working part with new spare (additional) holes which are inoperative at the time of using the original master keys. After the master key has been lost or stolen, the lock inserts are modified, inter alia, in the form of a lateral lock, to which the above-mentioned slave keys are prepared in advance by creating the aforementioned new spare (auxiliary) openings. This lock condition a constant position when the key is inserted into the cylinder of the insert. At the same time, it prevents its "palpation" (shifting the key position for unauthorized opening), unlike single row insert systems. Thus, the new spare holes will become functional after adjustment of the lock inserts due to loss or theft of the master keys.

This essentially simple solution is conditional on an extremely sophisticated, structured, locking plan that manages more than twice the need for combination space over conventional cylinder assemblies.

In order to prevent further illegal processing - discarded ie.

a lost or stolen parent key to create the same

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with a new key, this new parent key has less depth on any of the teeth than the original key.

In particular, the slave key according to the invention is provided at the beginning before being released to the users such that it has an additional side opening which is a reserve opening on the side rib of the key working surface at a distance corresponding to 1/2 of the axes to the key stop. At the same time, this reserve hole is located on the rib so that the depth of adjacent teeth is not substantially reduced, i.e. by more than 30%, which significantly reduces the number of possible combinations of the assembly. The reserve opening itself then has a sufficient lead to ensure a smooth insertion of the key into the cylinder of the insert and the bottom of the opening has a depth in the rib such that, when inserted into the cylinder of the insert, the lateral locking element will not always be of constant size. If it exits the channel in the cylinder above its outer perimeter (into the liner body), it would block the rotation of the cylinder in the liner body. The key thus worked then works so that only upon reaching the prescribed key position in the cylinder of the insert, i.e. By supporting the key stop on the cylinder face, the key tooth axes coincide with the axis of the tumbler chambers and can then be rotated under a condition corresponding to the size of the key teeth with the tumbler spacers.

The master key is then modified according to the invention so that it has to have the same side hole as the spare key hole of the slave key, otherwise the inserts will not be able to open with this master key, and at the same time the parent key has less depth on one of the teeth.

Clarification of the figures in the drawing

Figure 1 schematically shows a slave key with a newly created spare side hole, Figure 2 schematically shows the original parent key in the basic design and Figure 3 schematically shows a new parent key with a newly created hole corresponding to the reserve hole for a child key.

DETAILED DESCRIPTION OF THE INVENTION

The slave and reserve master key assembly consists of a slave key 6 and a new master key 11, which consists of a key head 2, a key stop 3, a key spine 4, a key working portion 5 provided with teeth 6 and a key tip 7. The slave key 8 is further provided with a basic side opening 8.

The slave key 6 is then provided on the side rib of the working part of the key 5

X

a spare side opening 9 and a master key 11 through an opening 17 corresponding to this reserve opening 9 of a depth and diameter corresponding to the size of the side blocking segment with a haunch 10. The reserve opening 9 and its corresponding opening 17 near the master key are formed at a distance corresponding to 1 / 2 of the spacing of the axes 12 and 13 of the individual teeth 14, 15 from the axis 13 of the third tooth towards the stop 3 of the key 1 and the key 11. At the same time this reserve hole 9 and its corresponding hole 17 are located on the rib limited depth of adjacent teeth 14 and 15 by more than 30%. The new master key 11 then always has a depth of one of its teeth 6 less than the depth of the corresponding tooth 6 of the original master key 16, in order to prevent a possible subsequent modification of the re-found master key 16, which has ceased to function.

Industrial applicability

The invention is applicable in the field of master key locking systems, in particular for objects with a plurality of lockable spaces or locks. multiple child keys.

Claims (2)

PATENT CLAIMS An assembly of slave and reserve master keys, characterized in that it comprises a slave key (1) and a new master key (11), the slave key having a spare hole (9) on the side rib of its working parts (5) and the master key is provided on the side rib of its working part with an opening (17) corresponding to a reserve opening (9) of the slave key of constant depth with a lead (10), the reserve opening (9) and the opening (17) being formed in a distance corresponding to 1/2 of the distance of the axes (12, 13) of the individual teeth (14,15) from the axis of the third tooth (13) towards the key stop (3), and at the same time this reserve hole (9) and hole (17) are located on the rib working parts of the key (5) of the keys (1, 11) so that the depth of adjacent teeth (14, 15) is not limited by more than 30%. A slave and reserve master key assembly according to claim 1, characterized in that the depth of at least one of the teeth (6) of the new master key (11) is always smaller than the depth of the teeth (6) of the original master key (16).