EP0819813B1 - Electromagnetically controlled lock - Google Patents

Description

Technical field

The invention relates to an electromagnetically controllable lock, in particular for Security container, with a bolt operated by a handle and an as Holding magnet used electromagnet, the control and locking elements Latch locks or releases.

State of the art

Such a lock has become known from European Patent 0427188. The electromagnetically controlled safe lock described there has a Housing attached electromagnet on which an armature mounted on a locking lever faces. The intricately shaped locking lever is over a bearing pin, Steering cams and a spring coupled with a control lever, which is a tour channel having. Furthermore, a locking slide is provided, one in the control lever engaging tour pin. The blocking or release by swiveling movements requires an exact interaction of holding magnetic forces, control curves, Control pins, bearing pins, springs and tour pin. The parts may hardly have bearing play or Have wear, otherwise tilting will cause failure.

The European patent 0228027 also relates to an electromagnetically controlled one Security lock with a housing, in the front opening except one Customer locking mechanism is a bank locking mechanism. In a back An electromagnet is housed in the recess of the housing. Under the main bar, so relatively difficult to access, a locking lever and a control lever is arranged. The Locking lever carries a magnetic armature, the yoke of the electromagnet mentioned faces. Here, too, is the interaction of the magnet, control lever and locking lever and Tourstift quite confusing, whereby tight manufacturing tolerances are required to to guarantee the function permanently.

Presentation of the invention

The invention has for its object a castle with the introductory To create features that with particularly few, easy to manufacture individual parts gets along, which has a low power consumption and which is characterized by special Reliability and longevity.

This object is achieved in that the handle except the latch a control spool that moves via an electromagnet with a gate valve is coupled, in the tour channel of the tour pin of the bolt.

The control spool, the cross spool and the locking spool are so with the magnetic parts matched to each other that in the idle state the magnet armature on the yoke with the coil is applied. At the start of the control movement, the cross slide is raised, whereby the Locking slide takes along when a current pulse is present. When the magnet is de-energized the cross slide moves away from the locking slide so that it remains in the locked position. The electromagnet does not have to do any lifting work in any case, so that a very small magnet with very low excitation current is sufficient.

In the basic version, the lock will be designed so that only unlocking is dependent on the presence of an electrical pulse.

But there are also use cases, for example in the hotel sector, in which a accidental or accidental closing of the safe should be prevented.

While in the basic version the tour channel is designed so that the tour pin at another bolt of the invention provides that the Tour pin exits the tour channel at the end of its opening path so that the The locking slide can fall again into the locking position.

Another advantageous embodiment of the invention is that in addition to electromagnetically controlled lock also incorporates a tumbler package. In in this case the handle is replaced, for example, by a double-bit key, so that parts of the key bit drive both the bolt and the spool. The term "handle" is therefore to be understood so broadly that it has a double-bit key or includes cylinder key. It is crucial that the torque for the Movement of the controls and the latch is built up by hand and so the long-term power supply to the lock of a small and inexpensive battery can be left.

Description of the drawings

Fig. 1

zeigt das Schloß in Sperrstellung,

Fig. 2

einen Öffnungsversuch ohne Stromimpuls,

Fig. 3

den Öffnungsvorgang bei halb zurückgezogenem Riegel,

Fig. 4

die Offen-Stellung mit arretiertem Riegel,

Fig. 5

einen Versuch, den Riegel ohne Stromimpuls auszufahren,

Fig. 6

das Ausfahren des Riegels nach Anlegen eines Betätigungsimpulses,

Fig. 7

vergrößert die Steuerungselemente als Ausschnitt aus Fig. 2,

Fig. 8

einen Längsschnitt durch das Schloß,

Fig. 9

einen Querschnitt durch das Schloß,

Fig. 10

den Riegel von oben,

Fig. 11

den Steuerschieber,

Fig. 12

den Querschieber,

Fig. 13

den Sperrschieber,

Fig. 14

das Magnetjoch mit der Spule,

Fig. 15

den Magnetanker,

Fig. 16

den Wirbel als Antriebselement für den Riegel,

Fig. 17

eine andere Ausführungsform des Sperrschiebers.

An embodiment of a lock that requires a current pulse both for opening and for closing is explained with reference to FIGS. 1-16 of the drawing. Fig. 17 is a gate valve for another version in which a pulse is only required for opening.

Fig. 1

shows the lock in the locked position,

Fig. 2

an attempt to open without a current pulse,

Fig. 3

the opening process with the bolt half pulled back,

Fig. 4

the open position with the latch locked,

Fig. 5

an attempt to open the latch without a current pulse,

Fig. 6

the bolt is extended after an actuation pulse is applied,

Fig. 7

enlarges the control elements as a detail from FIG. 2,

Fig. 8

a longitudinal section through the castle,

Fig. 9

a cross section through the castle,

Fig. 10

the latch from above,

Fig. 11

the spool,

Fig. 12

the cross slide,

Fig. 13

the gate valve,

Fig. 14

the magnetic yoke with the coil,

Fig. 15

the magnetic anchor,

Fig. 16

the vertebra as a drive element for the bolt,

Fig. 17

another embodiment of the gate valve.

In Fig. 1 , 1 denotes the lock housing, which preferably consists of die-casting or is injection molded from fiber-reinforced thermoplastic. Screw holes 1a, 1b, 1c, 1d are provided at the four corners of the cuboid housing.

In the left half of the housing 1, the bolt 2 is slidably mounted. The latch 2 has a control recess 2a, into which a vortex 3 dips, which over a Square hole 3a is actuated by a handle, not shown.

An arm 2b of the bolt 2 reaching to the right carries a cuboid tour pin 2c.

A control slide 4 is slidably mounted under the bolt 2. He moves in the same direction as the bolt 2 and is connected to the vertebra 3 by a mandrel 3b driven. This mandrel dips into an elongated hole 4a. The control slide 4 has one elongated control curve 4b, which takes a cross slide 5. The slider carries a mandrel 5a which scans the cam 4b. A light coil spring 8 presses the Slide 5 down and the mandrel 5a against the cam 4b. Below the Cross slide 5, a locking slide 6 is mounted. Both sliders are in one Recess 1e of the housing. Your movements are determined by stop surfaces 1e1 and 1e2 limited.

The locking slide 6 has a tour channel 6a shown with broken lines, in which the tour pin 2c can enter if positioned correctly.

On the gate valve 6, an electromagnet 7 is attached, an armature 7a on the Cross slide 5 faces.

Fig. 1 shows all parts in the locking position.

If you try to pull the latch 2 back by turning the swivel 3 to the right, the scraper slide 4 is first pushed to the right, as a result of which the cross slide 5 is raised.

When the magnet 7 is de-energized, the armature 7a lifts off the yoke of the magnet 7, as shown in FIG. 2 .

The locking slide 6 remains in the rest position and the tour pin 2c abuts against the surface of the Locking slide 6. After a short control travel, the rotary movement of the handle limited and the latch 2 remains in the extended position.

Fig. 3 shows the opening process, which is initiated when the magnet 7 is excited and then the handle is moved.

The electromagnet 7 holds the armature 7a so that the cross slide 5 the blocking slide 6 takes along. The locking slide 6 is raised so far that its tour channel 6a faces the Tourstift 2c.

After the transition phase shown in FIG. 3 , the bolt reaches its end position shown in FIG. 4 , in which the tour pin 2c has emerged from the right end of the tour channel 6a and the locking slide 6 again assumes its lower end position and thus its locking position.

If, as shown in FIG. 5 , the swivel 3 is turned to the left, the control slide 4 is taken along. He lifts the cross slide 5, the locking slide 6 maintaining its blocking position when the magnet is not energized. The tour pin 2c abuts the locking slide 6 and the bolt 2 remains blocked in the locked position.

Fig. 6 shows the closing of the safe when applying a current pulse. The locking slide 6 is coupled to the cross slide 5, the tour pin 2c passes through the tour channel 6a and the latch 2 can be fully extended. In this end position, the touring pin 2c emerges from the touring channel 6a, the locking slide 6 falls down and the container is securely closed.

The state of the lock then corresponds again to FIG. 1.

The control elements are shown enlarged in FIG. 7 . One recognizes the control slide 4, the control curve 4b of which pushes the cross slide 5 upwards over the dome 5a. The coil spring 8 ensures that the dome 5a rests on the control cam 4a. A second, very light coil spring 9 is located between the locking slide 6 and the cross slide 5. The slides 5 and 6 are mounted easily in the recess 1e of the housing 1. The movement is limited upwards by the stop surface 1e1, and downwards by the surface 1e2.

Fig. 8 shows a longitudinal section through the novel lock. One can see in the housing 1 the latch 2 with the arm 2b, the tour pin 2c, the cross slide 5 and the coil springs 8 and 9. The functional parts in the housing 1 are protected by a housing cover 10. The vortex 3 is guided at the bottom of the housing base and at the top in the housing cover 10.

Fig. 9 is a cross section through the castle. The latch 2 is mounted in the housing 1. In the middle is the vortex 3 with the mandrel 3b, which touches the control slide 4.

In Fig. 10 , the bolt 2 is shown with the control recess 2a, the arm 2b and the tour pin 2c.

The control recess 2a is designed so that the vortex has a certain idle having. In this phase of movement, the control slide asks the activation state of the Lock. If the magnet is excited, the opening or closing process can be carried out become.

If there is no actuation pulse, the handle will move after a short angular movement stopped. The force for the control processes is very consciously handled applied so that the electromagnet does not have to do any lifting work. You come therefore with a very small holding current that is easily made from a standardized multicellular Battery can be applied. The battery can be easily accessed in a compartment 1f of the Housing are housed.

In Fig. 11 , the spool 4 is drawn with the elongated hole 4a and the cam 4b.

In Fig. 12 the cross slide 5 is shown, which has a recess for the magnet armature 7a at the lower edge.

13 shows the locking slide 6 with the tour channel 6a and a cutout for the electromagnet 7.

The electromagnet 7 consisting of magnetic yoke and coil is shown in FIG. 14 , the associated armature 7a in FIG. 15.

16 shows the vertebra 3 with the square hole 3a and the mandrel 3b at the end of the cantilever arm engaging in the latch 2.

17 shows a special shape of the locking slide 6. It has a lateral projection 6b above the tour channel 6a, which holds the tour pin in place when the bolt is withdrawn. If this locking slide is installed in the lock instead of the one shown in FIG. 13 , the security container can be locked at any time, that is to say without a coded current pulse.

Commercial usability

The lock described is ideally suited, in valuables or lockers different types to be used.

However, the invention is not based on the lock shown with the bolt drive Eddy and handle limited. You can also use a guard locking mechanism install so that to open both a key and a coded current pulse is required. A double-bit key, which is on his "Steuerweg" both classifies the tumblers and moves the control spool before part of the key bit sets the bolt in motion.

In a further embodiment of the invention, the lock shown is by a Double-bit locking mechanism added, which is housed in a recess in the housing and serves as an emergency opening system. The additional locking mechanism is only needed if the user has forgotten the code or the coding device is defective.

The entire system is then designed so that the manager with the emergency key can open, but to close the user code must be entered again. This prevents an unfaithful manager from opening the compartment without the To inform and involve tenants.

The structure of the lock housing and the bolt basically allows bascule rods to be stored in the left third of the housing, which are driven by a mandrel 11 on the bolt 2 (FIG. 10) .

The great advantage of the new type of magnet mechanics is that they are instead of Locking and control levers with complicated control curves essentially only three Slider required, of which only one has a control curve. These sliders, who only perform linear movements can easily and precisely in Housing recesses are stored. It is achieved with a comparatively small amount Manufacturing effort a permanently reliable and precise function.

LIST OF REFERENCE NUMBERS

1

lock housing

1a, 1b, 1c, 1d

screw holes

1e

recess

1e1, 1e2

stop surfaces

1f

subject

2

bars

2a

control recess

2 B

poor

2c

Tour pen

3

whirl

3a

Square hole

3b

mandrel

4

spool

4a

Long hole

4b

cam

5

cross slide

5a

mandrel

6

blocking slide

6a

Tour channel

7

electromagnet

7a

anchor

8, 9

coil springs

10

lock cover

11

mandrel

Claims (8)

1. An electromagnetically controllable lock, particularly for valuables containers, comprising a manually operated bolt (2) and an electromagnet (7, 7a) which blocks or releases the bolt (2) by means of control and stop slides (4, 6),
   characterised in that
   a manually operated rotary catch (3) entrains the control slide (4) in addition to the bolt (2), the control slide (4) moving a transverse slide (5) by means of a cam (4b), the transverse slide (5) being coupled by the electromagnet (7, 7a) with the stop slide (6), the channel (6a) of which is entered by the pin (2c) of the bolt (2).
2. A lock according to claim 1, characterised in that the yoke and coil of the electromagnet (7) are arranged on the stop slide (6).
3. A lock according to claim 1, characterised in that a spring (8) presses the transverse slide (5) towards the stop slide (6).
4. A lock according to claim 3, characterised in that a further spring (9) acts between the transverse slide (5) and the stop slide (6), its actuating power being less than the holding power of the magnet.
5. A lock according to claim 1, characterised in that the pin (2c) rests in the channel (6a) of the stop slide (6) when the bolt (2) has been drawn back, so that the bolt (2) can readily be moved in the closing direction.
6. A lock according to claim 1, characterised in that when the bolt (2) is being drawn back the pin (2c) comes out of the channel (6a), the stop slide (6) drops into the blocking state again and the bolt (2) can be moved out only if an electric pulse is applied.
7. A lock according to claim 1, characterised in that a tumbler closing mechanism, used for emergency opening, is additionally inserted in the lock housing.
8. An electromagnetically controllable lock, particularly for valuables containers, comprising a manually operated bolt (2) and an electromagnet (7, 7a) which blocks or releases the bolt (2) by means of control and stop slides (4, 6),
   characterised in that
   a two-bit key is used for actuating the bolt (2), the key entraining the control slide (4) which moves a transverse slide (5) by means of a cam (4b), the transverse slide (5) being coupled by the electromagnet (7, 7a) with the stop slide (6), the channel (6a) of which is entered by the pin (2c) of the bolt (2), the two-bit key at the same time controlling a tumbler closing mechanism, so that both a key and a coded command for the electromagnet are necessary to open the lock.

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