DE395128C - Security lock through which the keyhole of the lock to be secured is covered by a lockable cap - Google Patents

Description

The present invention! ”Arrives .Safety lock of the well-known type, one for securing the lock to be secured takes place in that the keyhole of this lock through a lockable cap is covered and causes the opening of the cap by inserting a key will. According to the invention, one equips the key with one under the action of ίο Feather standing part from pushing home of the key into the cap against one of the (still held) bolts pushes and thereby pushed back into the key against the action of the so-called spring is, however, if the guard locking (or guard locking) of the lock by the remaining key from the bolts, from which the cap is held have been completely excavated from the The spring is pushed back out of the key and thereby pushes the bolt back.

A more convenient way to close the cap, can be achieved if erschließ in the \ ^T \ verk the cap a spring arranges that is tensioned by unlocking the cap and which, when attached by pressure on one hand to the cap Button is triggered, the latch, which are used to hold the cap, advances. You can then give the whole safety lock the shape of the push button of an electric bell and thereby conceal the actual purpose of the lock.

This is achieved even more safely if the aforementioned button is also used as a power connection button trains. You can then actually use the button to trigger an electric doorbell and one attach the corresponding inscription to the safety lock; an uninitiated at first it doesn't even occur to me that the keyhole is under the cap to be sought.

In the drawing the invention is through an exemplary embodiment explained:

Fig. Ι shows the security lock attached to a door.

Figure 2 is an exterior view of the lock with the key inserted.

Figure 3 is a view of the interior of the security lock in the locked state. Fig. 4 is an associated cross-section and Fig. 5 is the same view as Fig. 3, only seen from the opposite side.

Fig. 6 is a section through Fig. 5 and Fig. 7 is the same section when retracted Latches.

Figures 8 and 9 are two views of the key.

Fig. 10 shows a view of the key in the lock in the middle of the opening process and

Fig. 11 at the end of the opening process.

Fig. 12 shows a cross section through the lock with the key inserted at Beginning of the opening process.

Fig. 13 shows the same section in the state corresponding to Fig. 10 and

Fig. 14 the same section, but in that the states corresponding to Fig. 11. Fig. 15 shows the lock from the side. Figure 16 is a view of the interior of the lock with the cover removed.

Fig. 17 is a cross-section through the lock.

Fig. 18 shows the lock with the lid folded aside.

In a cover 1, an angle lever 4 is rotatable about a pin 16; an angle lever 3, which is rotatable in the cover about a pin 18, lies under the action of a spring 20 against the angle lever 4. A bolt 5 'is connected to the free end of the angle lever 4 by a bolt 15, with which The free end of the angle lever 3 is connected to a bolt 5 by a bolt 13. Five tumblers 7, 8, 9, 10 and 11 of different widths can be rotated about a pin 14 in the cover 1: they each encompass the pin 18 with a slot 17 and each engage with a nose 12 behind a nose 6 of the bolt 5, with acts on each one spring 20 '. The cover ι finally carries a pressure under the action of a spring 24

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button 23 which allows a pawl 25 to act on a pawl 25 which is loaded by a spring 26 around a pin 25 '. The push button 23 carries a contact piece 23 '.
The lid 1 is hinged to a slide 33 which can slide on a housing 2 into which the lid fits; the cover can therefore be pulled out of the housing and then folded aside. The housing is attached to the door to be secured by means of screws 39 above the keyhole of the door; the keyhole is accessible through a correspondingly shaped opening 38 in the bottom of the housing when the cover 1 is folded aside; a wire connection screw 35 is screwed into the housing.

ao The key consists of a flat metal body 27, which has a button 28 at one end and with cutouts at the other end is provided, which correspond to the various tumblers 7 to 11 with their depth. In the key body 27, a rod 29 is displaceable in its longitudinal direction, which protrudes into the button 28, on which a spring 30 acts in the sense that it moves the rod to the free end of the body 27 seeks to push.

The function of the security lock is as follows: If the cover is 1 in the one in Fig '. 3 to 6, 10, 12 and 13 drawn States, the latches 5 and 5 'each engage in a groove 40 and 40' in the housing 2 is milled; the lid 1 is as a result firmly locked on the housing and the keyhole of the lock to be secured inaccessible. The position of the bolt is secured by the tumblers 7 to 1 r, the under the action of the spring 20 ', each with its nose 12 behind the nose 6 of the bolt 5 to grab. If the keyhole is to be accessible, the key 27 must be inserted.

With this, the tumblers with their noses are lifted out of the bolt 5, while until this is completed, the rod 29 of the bell crank 4 on which it strikes, is advancing is prevented, so that it is against the action of the spring 30 in the key body 27 pushes back. If the tumblers are lifted, the spring 30 pushes the rod 29 forwards. As a result, this pulls With the help of the angle lever, the bolt 5 'back immediately, while the angle lever 4 on the other hand, with the help of the angle lever 3, the bolt 5 is withdrawn. Then the pawl falls 25 under the action of the spring 26 and secures the bolt in its retracted position Position and thus the tumblers in their raised position. The lid 1 can can now be pulled out and folded aside so that the keyhole is released will.

If you want to close the lid 1 again, so you have to fold it back over the housing 1 and push it into the housing and then press button 23. The button 23 is then the pawl 25 through the latches 5 and 5 'are held in their retracted position, free. Consequently the latch is determined by the spring 20 'by means of the angle levers 4 and 4' again advanced so that the lid is firmly closed again. Under the action of Spring 20 'grip the tumblers 7 to 11 again with their lugs 12 behind the Nose 6 of the bolt 5 and consequently secure the bolt in its advanced position. The contact piece 23 'of the push button 23 is also opposite the contact screw 34 again, so that the push button can serve as a bell button.

Claims (3)

Patent Claims: 1. Safety lock through which the keyhole of the lock to be secured covered by a closable cap and easy to open the cap Insertion of a key is effected, characterized in that the key with one under the action of a spring that can be moved on the key Parts is equipped, which when inserting the key initially against pushes one of the bolts and is pushed back into the key against the action of the said spring, However, if the guard lock is lifted from the bolts by the rest of the key has been, is pushed back out of the key by the spring and thereby pushes the bolt back. 2. Safety lock according to claim 1, characterized by a spring which is through the unlocking of the cap is cocked and the when by a pressure on one Triggered the button that advances the latch holding the cap. 3. Safety lock according to claim 2, characterized in that the button is designed at the same time as a power button. 1 sheet of drawings.