DE7413584U - ELECTROMECHANICAL SECURITY KEY MAGAZINE - Google Patents

Description

Utility model auxiliary registration

the

ALPINE Aktiengesellschaft concerning a

electromechanical safety lock magazine

The invention relates to a security key magazine in which keys to be secured against removal are only released after a lock has been actuated and a timer has run out. It relates to the design of such a magazine in which an electrical timing relay is used as a Zeitschaltvei'k, through which an electrical lifting magnet is switched to actuate a blocking element .

Key magazines are used, for example, where for security reasons one or more keys are only used after a certain period of time may, for example, to open a door to a room that may only be entered after the processes that have taken place in it or For opening machines with parts rotating inside that may only be exposed after they have come to a standstill. These key magazines can can only be actuated when a key is used to unlock the magazine Key is available. This can, for example, be used to lock a power switch be provided for a drive motor and only removed from the associated lock on the circuit breaker after the motor has been switched off will.

A key magazine of the type mentioned is already duich die DT-FS 1 912 786 became known. With this device the peculiar

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borrowed magazine consisting of cylinder locks, a mechanical time ■ derailleur, one lever for tensioning the timer and two directly Discs arranged one above the other under the cylinder locks with bores for the Aafsshae of the disengageable SehioEstifte of the cylinder locks housed in a common housing. This results in a compact, easy-to-use design that can be used in a variety of ways and ensures a high level of security.

The disadvantage, however, that such a key magazine because of its mechanical or mechanical engineering structure does not allow organic installation in electrical control cabinets or in areas in which you are dependent on the Design matters, such as in the laboratory or medical sector, etc., cannot be used. In addition, kosaat that the always necessary activity of the Shift lever both when unlocking and when locking the magazine which he = · requires the operator to pay close attention, because in the event of improper handling, e.g. if the shift lever is not exactly in its respective end position is brought, the proper function of the device is not guaranteed, so that there may be delays or disruptions in operations.

The invention was therefore based on the object of creating a key magazine, this in addition to the advantages of the known device, namely high security as well as securing several keys, in particular for locks of housing doors of machines with internal rotating parts, and adjustability the expiry time of the timer »has further advantages: It should be in control cabinets with a power unit to supply individual machines or in control panels and control cabinets for supply and control

7413584 111175

of production group »η and systems built in organically and also Can be used where a raar, chinenbauittäßige training is unsuitable or is undesirable, e.g. in the laboratory or medical area. In addition, its handling should be simplified even further and thus Be <Uem'ni »& -

: errors are excluded.

'. "·' As a solution to this problem, a key magazine is proposed in which

I keys to be secured against removal, especially for the locks of

) l Housing doors of machines with internal rotating parts, only after loading

jf actuation of a lock and operation of a timer for removal

■ l are released whose time switch mechanism is set in its expiry time

!? electrical time relay and its actuator for a blocking

J5 element for locking or releasing the lock bolts and thus the key

j? the cylinder lock it is an electric Kuuma-giiet. To secure the

1 A spring element is provided to ensure that it is effective even in the event of a power failure.

I row, which brings the locking element to its rest position in the event of a power failure

t or holds there, se that a removal of the key to be secured is not

j; is possible.

Advantageous further developments of the invention are characterized in the subclaims whose objects are only related to the objects

t of the main claim and the first sub-claim placed under protection

should be.

The drawing shows two exemplary embodiments of the Sicherheitsschlüssr.liaagazins according to the invention - hereinafter referred to as "device" for the sake of simplicity - illustrated, namely shows:

7 ** 3584 UUIS

Figure 1 shows the electrical control circuit in operation

position "device free - key blocked" 'while which the timing relay expires.

Figures 2, 3 and h show the design of the device with a locking bar and arrangement of the cylinder locks in a row;

Figure 5, 6 and T show the design of the device with a locking disk

and arrangement of the cylinder fitters in a circle around the Rotation axis of the locking disc.

the operating positions are shown

"Device locked" (Figures 2 and 5)

"Device free - key blocked" (Figures 3 and 6)

"Key free" (figure h and 7)

The devices shown are designed to secure four keys, one of which can be used to block, for example, the power switch for the drive motor of a machine, while the other for the Locking of doors on this machine can be provided. In general, the number of locksmiths depends on the number of locksmiths at the same time securing number of machines or machine parts.

"Device locked" operating position (Figures 2 and 5):

The rectilinearly movable locking rail 1 or. the rotatable locking disk is connected to the lifting magnet si via the coupling member 3 and is held in the rest position by the compression spring U supported against the coupling member and housing of the lifting magnet, in which the magnet si is de-energized. In the locking rail 1 or. Lock washer 2 opposite housing wall

the cylinder locks 6, 7, in which the associated keys 8, 9 can only be removed when the lock is pushed in, are installed in such a way that the keys can be inserted from the outside. On the other side of the locking rail or locking disk and exactly opposite the locks 6, 7, the changeover switches bi, b2, b3, bU, each equipped with a normally open contact and a normally closed contact, are arranged on the rear wall 10 of the housing. Locking bar 1 and locking disk 2 are provided with bores 11, 12 for the lock bolts 13, \ k to pass through in such a way that when the magnet is de-energized, the axes of bore 11 and lock 6 coincide and the axes of bores 12 and locks 7 ma the Stroke of the magnet ä1 are offset from one another. Lock 6 is pressed in, locked and the key 8 is removed; the locking bar 1 or locking disk 2 is held by the lock bolt 13 so that the locks 7 are not pressed in, so the keys 9 cannot be removed. The withdrawn key 8 can be used to unlock a lock connected to an electrical switch. A power failure does not change anything in the locking mechanism, the safety effect is retained.

Operating position "device free - key blocked" (Figures 3 and 6):

If the lock 6 is unlocked, the firing pin 13 goes back and Switch bi toggles. The red control lamp h1 / ro goes out, the yellow one Control lamp h2 / ge, which is connected to voltage via the switch b5 activated by the locking bar or locking disk, lights up, the wiping relay d1 enters puncture and gives momentary contact to timing relay d2, which keeps itself through an immediate contact and begins the process.

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In this phase, the locks 7 cannot yet be pressed in, since the magnet is de-energized and is therefore in the rest position. If the expiry of the Time relay d2 due to power failure or by briefly pressing the lock interrupted, -that returns to its original position and begins as soon as Voltage is present, its passage of time anew. This means that the safety effect of the device is not canceled in this operating position either. If, on the other hand, lock 6 was pressed during the power failure and key 8 removed, then Betriel position "device locked" occurs and the red control lamp h1 / ro lights up when voltage is applied again.

Operating position "key free" (Figures U and 7):

If the time set on the time relay d2 has expired (this can be e.g. N .'- 'ihlaufz.eit correspond to a switched off machine, which only after The time contact switches when the rotating parts are still at a standstill of relay d2 the solenoid si on. This attracts, so that the locking rail 1 or * locking disk 2 from its rest position at the same time Tension of the spring U is offset so far that the holes 12 in front of the Lock bolts H * of the locks 7 are, which are now in any order can be pressed in while the lock 6 is locked and thus the key 8 can no longer be removed. Simultaneously The yellow control lamp h2 / ge and the green control lamp h3 / gr lights up. As soon as one of the locks 7 is pressed and thus one of the Switch b2, b3, bU is actuated, the power supply to relay d2 is interrupted, whereby the self-holding contact and the time contact of d2 open, but at the same time the power supply to the solenoid si by closing of the working contacts of b2, b3 or bU is maintained.

If a power failure occurs when the magnet si and the locks 7 are not pushed in, the spring h pushes the storage bar 1 bsv. Spcrrschcibe 2 back to the rest position, ie in the operating position "GeriiL · locked". If voltage is applied again and the lock 6 has not been pressed, the sequence is repeated after the operating position "device free - key blocked".

If a power failure occurs when the magnet is attracted but the locks 7 are pushed in, this has no effect because the locking bar or locking disk is held in place by the lock bolts 1U, the spring U does not have any effect. A machine can open in this case , but cannot be switched on. If voltage is applied again, it will also pull

% Magnet is on and relieves the lock bolt, which leads to the safety effect

but no change. Are all keys 9 in the Locks 7 and become the lock bolts 1U by turning the key 9 withdrawn, the lifting magnet si is switched off when the last lock bolt goes back. The spring U presses the locking bar 1 or locking disk 2 back to the rest position. The green control lamp h3 / gr goes out

• _r and the yellow control lamp h2 / ge lights up. The locks 7 are locked, lock 6 is free.

If the lock 6 is pushed in, the switch b1 switches over: The yellow control lamp h2 / ge goes out, the ro * · * · control lamp hl / ro lights up. With the Key 8 can now, for example, put a machine back into Betric / b.

The use of the device is of course not restricted to securing Machines, it can also be used, for example, in professional foot controls Secure individual switches, levers, flaps etc. are used.

Ϊ - 8th -

7413584 13.1175

Claims (1)

Protection claims 1. Key magazine wherein the key shared with permanently installed in the housing cylinder locks for against removal to be backed up key ^insbesondex% e for the fitter of cabinet doors of machines with rotating in the interior parts, only after actuation of a lock and the end of a Zeitschaltwerkf for the removal are marked Äareh iron locking bar (1) or locking disc (2) for locking or releasing the lock bolts (13, 1 ¹ O and thus the key (8, '9) of the cylinder locks (6, 7) »one for actuating the locking bar or locking disk provided electrical lifting magnets (si) and an electrical time relay (d2) for delayed switching of the lifting magnet. _{2, key magazine according to claim 1, characterized by a part 1,} in particular the housing of the lifting magnet (si), which supports itself against the locking bar (1) or locking disk (2) and housing (5 »10) or, in particular, the housing of the lifting magnet (si), the locking bar "or locking disk in the rest position holding compression spring 3. Key magazine according to claim 1 or 2, characterized in that that the timing relay (d2) has a self-holding contact arranged in its supply line. H. key magazine according to claim 3 »characterized in that η Q - that in a second supply line to the electrical timing relay (cl2) the Contact of a wiping relay (eil) is arranged. 5. Key magazine according to one of claims 1 to h , characterized in that each cylinder ^{lock (6, T) is actuated by its lock bolt (13, 1 1} O electrical switch (b1. B2, b3, bU) each with a rest and a work cycle is assigned. 6. Final elmagazf "" ι according to claim 5 »characterized in that that the normally closed contacts of the cylinder locks (7) are to be operated r the switch (b2, b3, bl ») in the first supply line to the timing relay (d2) are arranged 7. key magazine according to claim 5 »characterized in that that the ^ rest contacts to be actuated by the cylinder locks (6) Switch (b1) in the common supply line to time relay (d2), lifting magnet (si) and V / isch relay (d1) are arranged. 8. Key magazine according to claim 5 »characterized in ₃ that the working contacts of the switch (b2, b3, b'O) to be actuated by the cylinder locks (7) are arranged in a second feed line to the lifting magnet (si). 9 · Key magazine according to claim 5 »characterized in that that the working contacts of the cylinder locks (6) to be actuated f lowing switch (b1) in the supply line to a control lamp (h1 / ro) '■ _: Display of the lock status of the key magazine are arranged. - 10 - man * utin «T ♦ 'ti * · · «44i - 10 - 10. Key magazine according to one of claims 1 to 9 »characterized in that at least one through the locking rail 1 or locking disk 2 actuatable electrical switch (b5) with a Rest and a working contact is provided. 11. Key magazine according to claim 10, characterized in that that the contacts of the changeover switch (b?) in supply lines to one control lamp each (h2 / ge, h3 / gr) to display various operating states of the key magazine are arranged.