EP0701037B1 - Lock for prison doors - Google Patents

Abstract

The security lock firmly holds a door shut, esp. in a security area in a prison. It incorporates a set of key-operated tumblers which can retract the bolt, together with a catch retracted via a changeover mechanism by a second turn of the key. The front part (Rv) of a locking device, consisting of a recess (A) in the bolt stem (3), is necessary for locking the bolt out of use. It is formed on a lever (12) which hinges on the stem between a front position used for the locking-out movement and a rear position. This activates the changeover mechanism via a lug (10a) on moving from the front to the rear position. The lever can bear against the stem in the front position.

Description

The invention relates to a lock for prison doors with at least one Set of tumblers using a key with at least one Key bit for retracting the latch, and with a trap secured by a new classification of the tumblers Change by a second rotary movement of the possibly changed Key is retractable.

Prison door locks of the type described above are known. They are equipped with at least one set of tumblers that are suitable for the Actuation of the secured change can only be raised slightly. The reason for this is the fact that for the second rotary movement of the key the bolt closure formed on the bolt shaft changes due to material removal must be that on the other hand sufficient material in the area of the bolt closure must be present in order to be able to exclude the bolt. Because of these different requirements, the known Locks the bolt lock for actuating the change only slightly except where the limited increase of the tumblers for the Activation of the change results.

The invention is based on the task, a prison door lock to create the type described above, in which the tumblers for the purpose Achieving maximum security even when switching to Classify over the full height, i.e. the complete radius of each Key bit level can be raised.

The solution to this problem by the invention is characterized in that the front part required for excluding the bolt is designed in the form of a recess in the bolt shaft bolt closure on a lever which is on the bolt shaft between a front, used for the exclusion movement and one rear end position is pivotally mounted and which actuates the change in a transfer from the front to the rear end position via a stop.

Due to the inventive design of the bolt closure carried out in the shaft using a pivotable between two end positions Lever has the advantage that for securing the actuation of the Alternately used the same tumblers without additional processing are, taking advantage of the full lifting height for bolt operation and thus the highest possible security. At the same time, one for the second key turn necessary change of the bolt lock without Material removal achieved, so that there is no impairment of functional safety the bolt actuation results, although the tumblers provided for this can also be used to secure the switch actuation.

The lock according to the invention can with one or two sets of tumblers be executed that either have a fixed closure or convertible are. The keys used for the lock can be used with a simple or with a double bit with the same or different closure of the Beard levels must be trained. If a double bit key is used, this must be pulled out of the lock after the bolt has been withdrawn and rotated back into the lock for the latch actuation by 180 ° be plugged in.

According to a further feature of the invention, the lever is in the front End position positively on the bolt shaft and in the rear end position a stop pin of the change. The lever is preferably by a Spring loaded towards its front end position.

In a preferred embodiment of the invention, the lever is between the bolt shaft and the striking plate arranged and by bending or thickening of its area of attack with in the plane of the bolt shaft lying attack surfaces provided at least the strength of the bolt shaft have, so that despite the division of the bolt closure two components a large and reliable touch for the key bit results.

Fig. 1

eine ohne Schloßdecke gezeichnete Draufsicht auf das Schloß im verschlossenen Zustand;

Fig. 2

eine der Fig. 1 entsprechende Draufsicht, in der sich das Schloß im halboffenen Zustand befindet, d.h. mit zurückgezogenem Riegel, aber herausragender Falle;

Fig. 3

eine weitere Draufsicht auf das Schloß gemäß den Fig. 1 und 2, wiederum im halboffenen Zustand gemäß Fig. 2, jedoch mit eingeordneten Zuhaltungen zum Zurückziehen der Falle mittels des Wechsels;

Fig. 4

eine weitere Draufsicht auf das Schloß nach den Fig. 1 bis 3 in geöffnetem Zustand mit zurückgezogenem Riegel und über den Wechsel eingezogener Falle;

Fig. 5

eine Darstellung des unteren Teils des Schlosses gemäß Fig. 1, bei der zur Erläuterung des Riegelschlusses die Zuhaltungen nicht dargestellt sind;

Fig. 6

einen Querschnitt gemäß der Schnittlinie VI - VI in Fig. 5;

Fig. 7

eine der Fig. 5 entsprechende Darstellung bei Beginn der Wechselbetätigung und

Fig. 8

eine den Fig. 5 und 6 entsprechende Darstellung mit zurückgezogenem Wechsel.

An exemplary embodiment of the lock according to the invention is shown in the drawing, namely:

Fig. 1

a plan view of the castle in the closed state drawn without a castle ceiling;

Fig. 2

a plan view corresponding to Figure 1, in which the lock is in the semi-open state, ie with the bolt retracted, but outstanding case.

Fig. 3

a further top view of the lock according to Figures 1 and 2, again in the semi-open state according to Figure 2, but with arranged tumblers for withdrawing the latch by means of the change.

Fig. 4

another plan view of the lock of Figures 1 to 3 in the open state with the bolt retracted and the case retracted by the change.

Fig. 5

a representation of the lower part of the lock of Figure 1, in which the tumblers are not shown to explain the bolt closure.

Fig. 6

a cross section along the section line VI - VI in Fig. 5;

Fig. 7

a representation corresponding to FIG. 5 at the start of the change operation and

Fig. 8

5 and 6 corresponding representation with withdrawn change.

1 to 4, a lock plate 1 can be seen in each case, on the front, angled edge a faceplate 2 is attached. Openings in the faceplate 2 both protrude at the front end of a locking shaft 3 trained bolt head 3a as well as a trap 4, which is arranged at the front end of a drop shaft 4a. The bolt shaft 3 is longitudinally slidably supported on guide pins la via slots 3b are attached to the lock plate 1. The longitudinal shaft 4a is guided by guide pins 1b, which are also arranged on the lock plate 1 are. Finally, the lock plate carries 1 threaded bushings 1c, which are releasable Attachment of the castle ceiling, not shown in the drawings to serve.

The actuation of the bolt consisting of bolt shaft 3 and bolt head 3a is carried out by a key S, which is shown in dashed lines in FIGS. 1 to 4 and is attached to a key pin 1d arranged on the lock plate 1 becomes. This designed as a double-bit key in the embodiment Key S acts on locking tumblers 5, which have elongated holes 5c the guide pins 1a provided for guiding the locking shaft 3a are adjustable in height on the lock plate 1. The locking tumblers 5 are for interacting with the key bit of the key S. a tumbler channel 5a. In the area of this tumbler channel 5a are arranged on the lock plate 1 two stop pins 1e, the one Prevent key S from turning in the wrong direction.

In the exemplary embodiment, each locking tumbler 5 acts via one Coupling channel 5b with a coupling piece 6a of a changeover tumbler 6 together, via elongated holes 6b on bearing pins 3c of the locking shaft 3 are also adjustable in height. About one attached to the front Each change guard locking 6 acts with a locking lock 7 together, in the locked state of the lock on a holding pin 8 is held, which in turn is fixedly arranged on the lock plate 1.

In order to enable the change-over positions 6 to be separated from the locking tumblers 7, are the locking tumblers 7 via slots 7a on guide pins 9a of a support plate 9 guided below the locking shaft 3 is arranged between this bolt shaft 3 and the lock plate 1 and engages with the guide pins 9a in slots 3e of the locking shaft 3. This support plate 9 is loaded by a tension spring 9b, which between a Guide pin 9a of the support plate 9 and one fastened on the locking shaft 3 Spring mandrel 3f is arranged.

The actuation of the trap 4 is optionally not via the locking lug one shown profile cylinder, the one shown in the drawings Lock cylinder opening 1f in the lock plate 1 and in the not shown Castle blanket is used, or via a change 10, which on a Bearing mandrel 3g is pivotally mounted on the locking shaft 3. At the top The end of the change 10 is counterclockwise by a return spring 11 charged.

To the case 4 against the force of a case spring 4c by means of the change 10 in the half-open position of the lock according to FIG. 2 pull back can, the key S must be removed from the lock and 180 ° twisted back onto the key pin 1d. In the then turning the key S clockwise according to FIG. 3 strikes the key bit on a lever 12, which is on a bearing pin 3h the locking shaft 3 is pivotally mounted. This lever 12 comes with the described key rotation on a stop pin 10a of the Change 10 to the system, so that with a further key turn according to Fig. 4 shows the upper end of the change 10 via a on the drop shaft 4a attached stop pin 4b the case 4 in the position shown in Fig. 4 against the force of both the latch spring 4c and the return spring 11 withdraws.

The prerequisite for this retraction movement of trap 4 is that previously the key bit of the correct key S the complete tumbler package from locking tumblers 5, switching tumblers 6 and blocking tumblers 7 according to Fig. 3 has been raised so that a fixed on a removable plate 13 Change pin 13a aligned in the respective closure Incisions 7b of the locking tumblers 7 can occur. The Exchangeable plate 13 is by means of elongated holes 13b on bearing pins 1g of the lock plate 1 guided longitudinally and is via a slot 10b in Exchange 10 by a driving mandrel fastened on the exchange plate 13 13c shifted longitudinally. An actuation of the change 10 by the key S is therefore only possible if the three-part tumblers are working properly have been classified according to the respective closure, which is why one speaks of a secured change 10.

In order to hold the bolt in the respective end position, a on a bearing mandrel 1h of the lock plate 1 pivotally mounted Retainer 14 is provided, which is loaded by a leg spring 14a and with stops in corresponding recesses or behind corresponding ones Stop edges of the bolt shaft 3 engages. This holder 14 is by at least one of the locking tumblers 5 against the force of the leg spring 14a raised when the locking shaft 3 from the respective end position should be transferred to the other end position.

Around the locking shaft 3a from the closed state shown in FIG. 1 withdrawing the lock into the open position are considered first the locking tumblers 5 by the key S corresponding to the respective Closure raised so that the coupling pin 6a of the changeover tumblers 6 with a further turn of the key together with the bolt shaft 3 can be moved back. With the locking tumblers 5 was the holder 14 is raised, so that the locking shaft 3 for this retraction movement is released.

Since the support plate 9 loaded by the tension spring 9b together with the Bolt shaft 3 is moved in the retraction direction, with the retraction movement the changeover tumblers 6 also the blocking tumblers coupled with these 7 withdrawn so that they are separated from the retaining pin 8. As soon as the locking shaft 3 in its rear end position shown in Fig. 2 has been transferred, the tumblers 5,6 and 7 are lowered into the in Fig. 2 position shown. This half-open position of the lock with the retracted Bolt head 3a, but excluded case 4 is shown in FIG. 2.

In this semi-open position shown in FIG. 2, the trap 4 by the Closing nose of the profile cylinder, not shown in Fig. 2 against the force the trap spring 4c are withdrawn. This retreat movement of the trap 4 is therefore independent of the locking mechanism operated by the key S.

However, in order to retract the trap 4 using the key S, it is necessary to the key S from the position shown in Fig. 2 from the Take the lock out and put it back on the key pin by 180 ° 1d. A subsequent turn of the key S, which in Fig. 3 is shown, on the one hand causes the tumbler levels of the key bit a lifting of the tumblers 5 and thus with them Locking tumblers 5 form-locking tumblers 6 and Locking tumblers 7 and on the other hand by the bolt step in another Turning clockwise entraining the lever 12, which is the forms the front part of the deadbolt. Since the lever 12 after a slight Pivotal movement around its arranged on the locking shaft 3a Bearing mandrel 3h comes to rest on the stop pin 10a of the change 10 the further rotation of the key S is a pivoting movement of the Change 10 around its bearing mandrel 3g. This pivoting movement of the Change 10 requires that the correct closing of the key S the locking tumblers 7 are aligned such that 7b the change pin 13a of the change plate 13 can enter, which at a Pivotal movement of the change 10 from the left drawn in Fig. 3 End position is transferred to its right end position according to FIG. 4. An actuation of change 4 is therefore only with a key S with proper Closure possible.

The lever 12, which is pivotably mounted on the locking shaft 3, thus replaces the front part of the locking lock which is implemented in the locking shaft 3 in the form of a recess A. The rear part of the bolt closure R _h necessary for withdrawing the bolt shaft 3 is formed directly on the bolt shaft 3. The part of the bolt lock R _w required to actuate the change 10 when the bolt is retracted is located on the front of the lever 12, whereas the rear of this lever 12 serves as the front part R _{v of} the bolt lock when the bolt shaft 3 is shown in FIG. 4 open position of the lock is to be transferred back to the closed position shown in FIG. 1.

For this actuation of the lock, it is necessary to place the key S in the position shown in FIG. 2 on the key pin 1d and to turn it counterclockwise. In this case, the locking tumblers 5 are first raised together with the changeover tumblers 6 and locking tumblers 7 as well as the retainer 14 (via the locking tumbler 5). If a key S with the correct lock has been used, the locking tumblers 7 are then pushed onto the retaining pin 8 arranged on the lock plate 1 as well as onto the change pin 13a arranged on the interchangeable plate 13 with a further counterclockwise rotation. After all tumblers have been properly classified, a further rotation of the key S causes the bolt to be pushed out by contact with the front part R _{v of} the bolt closure, which is formed on the lever 12. A pivoting movement of the lever 12 relative to the shaft 3 of the bolt is prevented by a stop surface 12b, which is formed between the lever 12 and the bolt shaft 3. Such a detail is shown in FIGS. 5, 6 and 7.

As can be seen from FIGS. 5 to 8, the deadbolt is on the one hand by a recess A in the locking shaft 3 and on the other hand through the free end of the lever 12 protruding into this recess A, which around the the locking shaft 3 arranged bearing mandrel 3h is pivotable to a limited extent.

In the exemplary embodiment, this lever 12 (as best seen in FIG. 6 emerges) between the lock plate 1 and the change 10, which in turn is below the locking shaft 3. The front, in the recess A of the Bolt shaft 3 protruding part of the change 12 has a considerable greater strength, so that a stop surface 12b is created with which the lever 12 in its front end position, shown in FIGS. 5 and 7, at the the upper edge of the recess A. This stop surface 12b is both 8 as well as in FIG. 6. It limits the swivel movement lever 12 clockwise.

By thickening the part of the protruding into the recess A. Lever 12 results in a sufficiently wide engagement surface 12c for the respective beard of the key S, as best shown in Fig. 6 too is recognizable. 5, 7 and 8 finally show that the lever 12 in Is loaded towards its front end position by a spring 12a is supported on a spring arbor 3i, which is arranged on the drop shaft 3 is.

If the bolt is to be moved from the excluded position shown in FIG. 5 to the retracted position shown in FIG. 7, the key S shown in dashed lines in FIG. 5 is turned clockwise. In the exemplary embodiment shown, its longer key bit takes the locking shaft 3 with it over the rear part of the locking lock R _h until it has reached the position shown in FIG. 7. If the change to retract the latch 4 is now also to be actuated with the key S, it is necessary to remove the key S from the key mandrel 1d and to replace it rotated by 180 °. The latch 4 can then be actuated by turning the key S clockwise. As can be seen from FIG. 7, the longer beard step of the key 7 in turn attacks the interchangeable actuating part R _{w of} the deadbolt which is formed on the front of the lever 12. 8, the lever 12 is pivoted counterclockwise against the force of the spring 12a around the bearing mandrel 3h until it comes to rest on the stop pin 10a of the change 10. Thereafter, the lever 12 takes the change 10 with a further rotation of the key S, so that it is pivoted clockwise on the bearing mandrel 3g, as can be seen from a comparison of FIGS. 7 and 8. 8, the pivoting movement of the change 10 is ended. The trap 4 is withdrawn according to FIG. 4. After opening the door, the key S is turned counterclockwise from the position shown in FIG. 8. The latch 4 returns to its position protruding from the faceplate 2 due to its loading by the latch spring 4c. The change 10 and the lever 12 also return from their position shown in FIG. 8 to their initial position according to FIG. 7, with the aid of the return spring 11 or spring 12a.

If, from the position shown in FIG. 7, the bolt 3 is to be moved into its extended position according to FIG. 5, this is done with the help of the key S, which has a beard on the rear surface of the lever 12 during a counterclockwise rotation attacks which forms the front part of the bolt closure R _v . Since the lever 12 bears with its stop surface 12b in a form-fitting manner on the locking shaft 3, an attack of the key bit on the front part of the locking lock R _v causes the locking shaft 3 to be pushed out and thus the locking head 3a emerges from the faceplate 2.

The above-described design of the bolt closure consisting of the rear part Rh, the front part R _v and the interchangeable actuating part R _w in the form of a recess A in the bolt shaft 3 and a lever 12 projecting into this recess A and pivotable relative to the bolt shaft 3 makes it possible to use the same tumblers for securing the change-over actuation that also secure the actuation of the bolt. Here, the full stroke of the tumblers is used both for bolt actuation and for alternate actuation, so that the safety of the lock is considerably increased. However, the use of the pivotable lever 12 not only avoids additional processing of the tumblers, but also additional material removal on the locking shaft 3, which would impair the functional reliability of the lock.

Reference list

1

Lock plate

1a

Guide pin

1b

Guide pin

1c

Threaded sleeve

1d

Key pin

1e

Stop pin

1f

Lock cylinder opening

1g

Bearing pin

1h

Bearing mandrel

2nd

Forend

3rd

Bolt shaft

3a

Bolt head

3b

Long hole

3c

Bearing pin

3e

Long hole

3f

Spring mandrel

3g

Bearing mandrel

3h

Bearing mandrel

3i

Spring mandrel

4th

Cases

4a

Droppings

4b

Stop bolts

4c

Trap spring

5

Locking tumbler

5a

Tumbler channel

5b

Clutch channel

5c

Long hole

6

Diverter lock

6a

Coupling piece

6b

Long hole

7

Locking device

7a

Long hole

7b

incision

8th

Retaining pin

9

Support plate

9a

Guide pin

9b

Tension spring

10th

Change

10a

Stop pin

10b

Long hole

11

Return spring

12th

lever

12a

feather

12b

Abutment surface

12c

Target

13

Removable disk

13a

Change pin

13b

Long hole

13c

Driving mandrel

14

Retainer

14a

Leg spring

A

Recess

R _h

Bolt closure rear part

R _v

Bolt closure front part

R _w

Bolt-lock interchangeable actuator

S

key

Claims (5)

1. Lock for prison doors, with at least one set of tumblers (5, 6, 7), which are coordinated, by means of a key (S) having at least one key bit, for the purpose of retracting the bolt (3, 3a), and with a latch (4) which can be retracted by means of a second rotational movement of the, if appropriate, rearranged key (S) via a changeover mechanism (10) secured as a result of the renewed coordination of the tumblers (5, 6, 7), characterized in that the front part (R_v) of the bolt tail designed in the form of a recess (A) in the bolt shank (3), the said front part being required for unlocking the bolt (3, 3a), is formed on a lever (12) which is mounted on the bolt shank (3) so as to be pivotable between a front end position used for the unlocking movement and a rear end position and which actuates the changeover mechanism (10) via a stop (10a) in the event of a transfer from the front end position to the rear end position.
2. Lock according to Claim 1, characterized in that, in the front end position, the lever (12) bears positively on the bolt shank (3).
3. Lock according to Claim 1 or 2, characterized in that, in the rear end position, the lever (12) bears on a stop pin (10a) of the changeover mechanism (10).
4. Lock according to one of Claims 1 to 3, characterized in that the lever (12) is loaded in the direction of its front end position by a spring (12a).
5. Lock according to at least one of Claims 1 to 4, characterized in that the lever (12) is arranged between the bolt shank (3) and the lock plate (1) and, due to the angling or thickening of its region of engagement, is provided with engagement faces (12b) which lie in the plane of the bolt shank (3) and which have at least the thickness of the bolt shank (3).

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