EP1960621B1 - Electrical lock with a manual emergency actuation - Google Patents

Description

The invention relates to a lock, in particular a mortise lock for a door, with a, in particular in a door leaf insertable lock cylinder and an electronically controllable locking device, for example, has a two sections with end-mounted handle, preferably in the form of knobs or pawls having shaft, said the sections of the shaft can be brought into operative connection via a coupling after recognition of an authorization code entered into the electronic locking device, in particular wirelessly, for example by radio.

Such a castle, which has proven itself in terms of its construction and handling, is for example from the DE 102 25 490 A1 known. This prior art lock has a shaft which is divided into two sections, wherein the sections of the shaft each end have a handle, preferably a rotary knob or a pawl and can be brought into operative connection via a coupling after detection of an authorization code. In this lock it is provided that the coupling has at least two, preferably four or more guided in recordings of a second part of a first portion of the shaft rolling body, which for establishing an operative connection between a first part and the second part of the first portion of the shaft with a radially or axially movable slide in the circumferential direction of the first part of the first portion of the shaft extending recess can be inserted. The slide is moved by an electric motor, which can be controlled via a locking electronics. The closing electronics may, for example, have a keyboard via which an authorization code is entered into the closing electronics. If the correct code is entered, the closing electronics control the electric motor. Of the
Electric motor shifts the slide so that the clutch is closed, such that the lock is unlocked and a door formed with the lock can be opened via the handles arranged at the ends of the shaft.

A locking device is also out of the WO 2004/057137 A1 known. This locking device has a coupling element which is arranged in a housing. In the housing electronically controlled drive means are provided with propulsion means for moving the coupling element, so that the coupling between a first and a second coupling state is movable. Furthermore, locking means are provided, which are actuated by a driven means, wherein in the first coupling state, the coupling element is positioned so that a rotor is not coupled to the output element, while in the second coupling state, the coupling element is positioned so that the coupling element, the output element with the Rotor hitches. Finally, the coupling element can be decoupled from the propulsion means in such a way that it can be moved away from the propulsion means in the second coupling state by a rotational movement of the rotor. The rotor receives a key and is rotatable by means of the key, wherein the rotor is arranged in a stator.

Furthermore, the describes DE 296 07 944 U1 an electronic door lock for mortise locks, which has a door inner fitting with a knob, a door outer fitting with a unit for entering a code and a rotary knob and an internal, electrically connected to the input unit electronics in which the code is stored and on the knob is unlocked in the door outer fitting in accordance with the stored code with the code entered. In this door lock is provided that an adapter is provided in the door as a locking mechanism, which is mechanically connected to the knobs on the inside and outside door fitting. The adapter has a fixed in the door housing in which a roller is rotatably mounted. In the housing, a closing nose is further arranged, which is arranged rotatably with the roller. With the roller in engagement is also guided in the housing closing insert. The housing of the adapter is designed as a profile cylinder and consists of a roll receiving the hollow cylindrical part and an integrally formed on the hollow cylindrical part, beard-like solid part. The housing is provided with two hollow slots passing through the hollow cylindrical part. A transverse slot is continued into the beard-like part and takes up the closing nose. The other transverse slot receives the lock insert. This embodiment contributes to a radial play compensation. In the area of
Door interior fitting a battery compartment is provided, which receives a power source, namely a battery for the power supply of the locking electronics. Furthermore, the door interior fittings on a cylinder lock, which is arranged in the rotary knob on the inside of the door.

Finally, in DE 102 25 649 A1 a locking device 1 indicated, which is actuated both by means of an electric actuator 9, as well as conventional locking cylinder 8, 72.

Starting from a prior art according to the DE 102 25 490 A1 the invention has the object , a generic lock in such a way that the reliability of such a lock is especially increased even if the electronic locking device is not unlocked by a defect and / or insufficient energy supply the lock for security reasons.

The solution to this problem is specified in the present claim 1 and provides for an inventive
Provided that the lock cylinder has a single mechanical emergency lock,
which can be actuated with a mechanical key and with which an operative connection, in particular between the sections of the shaft independent of the electronically controllable locking device can be manufactured or canceled.
The lock according to the invention can thus in principle be electronically locked and unlocked by transmitting an authorization code to the lock, checking the authorization code for its admissibility and, upon confirmation of an authorized code, unlocking the lock. As a major advantage of a lock according to the invention in accordance with the lock according to the DE 102 25 490 A1 This is because the electronics and the power supply of the electronics on the inside of the door, that is, for example, arranged at an entrance door in the room, so that the electronics from the outside is not manipulated, there is possibly the problem that when not detected in time energy shortage actuation of the lock is not possible by electronic means. In order to operate the lock according to the invention in such a case, the invention proposes that a single additional mechanical
Emergency lock is provided, which is actuated with a mechanical key, the operation is independent of the electronically controllable locking device, so that the emergency key with leading authorized person can open the lock even when the power supply of the electronically controllable locking device for a closing operation not enough. This refinement has the advantage that the entire electronics and energy supply can be arranged away from the exterior of a door and thus protected against manipulation.

According to a further feature of the invention, it is provided that a coupling is arranged between the sections of the shaft to be connected, which can be closed or can be opened via a control element connected to the emergency lock. The lock according to the invention thus has in comparison to the prior art according to the DE 102 25 490 A1 a second clutch, which is actuated via the mechanical emergency lock.

The invention further provides that the emergency lock has a roller body which has a keyhole for receiving the mechanical key and which is movable relative to the lock cylinder, in particular rotatable after insertion of the applicable closing code having mechanical key to actuate the clutch. Preferably, this embodiment of the invention is further developed in that the roller body has a particular end arranged and preferably inner control surface which is aligned in the radial direction of the roller body and cooperates with a preferably circular cross-sectionally shaped control rod, which control rod is aligned radially to the roller body and the Clutch actuated. By a rotation of the roller body is raised or lowered via the control surface, the control rod to close or open the clutch.
The coupling preferably has at least one ball which can be pressed into an annular space between the two sections of the shaft, the two sections of the shaft each having at least one projection projecting into the annular space. The projections are designed and arranged such that, when the clutch is not engaged, they allow a complete rotation of the two sections of the shaft relative to one another, without the sections of the shaft being able to come into contact in the region of the projections. If the ball is intentionally pressed into the annular space between the two sections of the shaft by actuation of the mechanical emergency lock, the section of the shaft connected to the outside handle comes into contact with the outer surface of the ball during a rotation of this section and displaces this ball into the Area of the second portion of the second projection of the second portion of the shaft, so that a positive force transmission between the portions of the shaft via the two projections and the ball arranged therebetween upon rotation of the handle and the lock is opened. Of course, a plurality of projections may be provided in the region of the two sections of the shaft in order to limit the Verdrehweg with coupled clutch.

According to a further feature of the invention it is provided that the sections of the shaft are arranged coaxially in one another. By this configuration, the length of the castle is limited.

A further embodiment of the lock according to the invention provides that the roller body has at least one, preferably six holes, into which engages or intervene in the locked state in each case a pin which can be disengaged by the mechanical key with the appropriate closing code.

According to one embodiment of this embodiment, it is provided that receiving bores are formed in the lock cylinder, which are aligned coaxially with inserted roller body with the holes in the roller body. These locating holes receive the pins as soon as they are displaced out of the holes in the roller body via the mechanical key, so that the roller body is freely rotatably mounted in the lock cylinder when the mechanical key is correctly inserted.

Preferably, the receiving holes are formed according to a further feature of the invention as blind holes, wherein between the closed ends of the mounting holes and the inserted pins spring elements are used, which press the pins into the holes in the roll body. About the mechanical key, the pins are therefore displaced against the spring force in the mounting holes.

Each pin is substantially cylindrical in shape and has at least one diameter reduction in its central region. This reduction in diameter improves the displaceability of the pin in the receiving bores or the bores in the roller body, since the adjacent outer lateral surface of the pin is reduced. This embodiment also increases the reliability of the lock against a strike of the emergency lock, in which the pins are driven out by a sudden driving a key-like wedge in the keyhole from its rest position in the holes.

A further development of the lock according to the invention provides that the pin is formed on at least one end face conical or conical section. In particular, this is the end, which faces the roll body. By the conical or cone-shaped section Design of the front end an improved handling of the emergency lock is achieved by the conical or cone-shaped surfaces form ramp surfaces for corresponding cuts of the mechanical key, so that the pins can be moved with little effort by the appropriate mechanical key from its rest position.

To increase the safety of the emergency lock is further provided that the holes, the mounting holes and the pins are arranged in two rows in the lock cylinder and in the roller body. As a result, an unauthorized reproduction of a new key is difficult. It is further provided in this regard that the holes, the mounting holes and the pins of the two rows are offset in the longitudinal axis direction of the roller body to each other.

To simplify the assembly of the lock is provided that the holes are formed open on both sides in the roll body. The receiving holes in the lock cylinder are formed on one side. During assembly of the lock according to the invention, the spring elements are inserted into the opening of the mounting holes in a first step and then pushed through the roller body. In the same way, the pins are inserted during assembly of the lock in the mounting holes from the outside and pushed through the roller body. Subsequently, the holes in the roll body are closed with extending in the axial direction of the roll body pins, which are located immediately below the keyhole. On these roller bodies are the tips or end faces of the conical or conical section shaped ends of the pin. By inserting the mechanical key, the pins are moved according to a profiling of the key from its latched, engaging in the roller body position in the receiving bore, so that the roller body is released for rotation within the lock cylinder.

A further embodiment provides for a lock according to the invention that between the sections to be connected to the shaft, a clutch is arranged, which is closed via a connected to the emergency lock, designed as a control rod control element or can be opened, wherein the control rod form-fitting with a roller body the emergency lock is connected.

The positive connection of the control rod with the roller body ensures that not only the engagement takes place with the required safety, but also the disengagement is carried out according to reliable, since even when disengaging the control rod is actuated by the rotational movement of the roller body. By virtue of this embodiment, for example, malfunctions due to a movement obstruction of the control rod caused by impurities, for example gumming of lubricants, corrosion or the like in the lock, are essentially precluded.

According to a development it is provided that the emergency lock has at one end a pin which engages in a correspondingly formed bore in the control rod. This connection is structurally simple and therefore can be produced with little effort.

Preferably, the pin is arranged offset to the longitudinal axis of the emergency lock on an end face of the emergency lock.

As part of a cost-effective manufacturability is provided in a development that the pin is formed integrally with the roller body. Of course, the pin can also be designed as a separate structural element and inserted into a bore of the roller body.

The pin may be frictionally and / or positively connected to the control rod. Accordingly, the pin may be formed, for example, in cross section round or have a control surface which cooperates with a control surface of a bore of the control rod.

In order to protect the lock against manipulation by the tampering of a manipulation key and the associated movement of the control rod, it is provided that the control rod is formed from an elastically deformable material, in particular a plastic. This choice of material leads to a compensation of the impact energy in the control rod.

It is finally provided according to a further feature of the invention that the control rod is guided in a channel and has a seal with which the control rod is sealed against an inner wall of the channel. The seal ensures that a ball to be moved with the control rod by blowing air, in particular compressed air is not manipulated.

Of course, it can also be provided in a lock with an actuatable via a control surface control rod in an advantageous manner that between the sections of the shaft to be connected, a clutch is arranged, which is closed via a connected to the emergency lock, designed as a control rod control element or can be opened, wherein the control rod is formed of an elastically deformable material, in particular a plastic.

Furthermore, it can also be provided in a lock with an actuatable via a control surface control rod in an advantageous manner that between the sections to be connected to the shaft, a clutch is arranged, which is closed via a connected to the emergency lock, designed as a control rod control element or opened can be, wherein the control rod is guided in a channel and having a seal with which the control rod is sealed against an inner wall of the channel.

Finally, it is provided in the lock according to the invention that the seal is formed of an elastically deformable material, in particular an elastomer.

Figur 1

ein Schloss in einer ersten perspektivischen Ansicht;

Figur 2

das Schloss gemäß Figur 1 in einer zweiten rückseitigen perspektivischen Ansicht und

Figur 3

das Schloss gemäß den Figuren 1 und 2 in einer dritten perspektivischen Ansicht.

Figur 4.

eine zweite Ausführungsform eines Schlosses mit einem Notschloss in einer ersten Schließstellung in Seitenansicht;

Figur 5

das Notschloss gemäß Figur 4 in perspektivischer Ansicht;

Figur 6

das Schloss gemäß Figur 4 in einer zweiten Schließstellung in Seitenansicht;

Figur 7

das Notschloss gemäß Figur 5 in der Schließstellung gemäß Figur 6 in perspektivischer Ansicht;

Figur 8

das Schloss gemäß Figur 4 in einer dritten Schließstellung in Seitenansicht;

Figur 9

das Notschloss gemäß Figur 5 in der Schließstellung gemäß Figur 8 in perspektivischer Ansicht und

Figur 10

das Schloss gemäß Figur 8 in geschnittener Seitenansicht entlang der Schnittlinie X-X in Figur 8.

Further features and advantages of the invention will become apparent from the following description of the accompanying drawings, in which a preferred embodiment of the invention is shown. In the drawing show:

FIG. 1

a lock in a first perspective view;

FIG. 2

the castle according to FIG. 1 in a second back perspective view and

FIG. 3

the castle according to the FIGS. 1 and 2 in a third perspective view.

FIG. 4.

a second embodiment of a lock with an emergency lock in a first closed position in side view;

FIG. 5

the emergency lock according to FIG. 4 in perspective view;

FIG. 6

the castle according to FIG. 4 in a second closed position in side view;

FIG. 7

the emergency lock according to FIG. 5 in the closed position according to FIG. 6 in perspective view;

FIG. 8

the castle according to FIG. 4 in a third closed position in side view;

FIG. 9

the emergency lock according to FIG. 5 in the closed position according to FIG. 8 in perspective view and

FIG. 10

the castle according to FIG. 8 in a sectional side view along the section line XX in FIG. 8 ,

The lock 1 according to the FIGS. 1 to 3 is designed as a mortise lock for a door and has an electronic locking device, not shown. The locking device is arranged in a lock cylinder 2, wherein in the lock cylinder 2 further comprises a shaft 3 is arranged, which passes through the lock cylinder 2 in the longitudinal axis direction and is rotatably mounted in the lock cylinder 2.

At the end, the shaft 3 in each case has a handle with which the shaft 3 in the lock cylinder 2 can be rotated, wherein a locking lug (not shown) can be moved via the shaft 3.

The shaft 3 is divided into at least two sections 4 and 5, which are arranged coaxially extending at least partially into one another. Not shown in detail is a coupling which can be engaged via the electronic locking device to bring the two sections 4, 5 of the shaft in operative connection. The design and function of this coupling are for example in the DE 102 25 490 A1 described.

The inventive lock 1 according to the FIGS. 1 to 3 has in the lock cylinder 2, a mechanical emergency lock 6, which consists of a roller body 7 which is rotatably mounted in a cylindrical opening 8 of the lock cylinder 2. The roller body 7 has a keyhole 9 for receiving a mechanical key 10. At its inner end, the roller body has a control surface 11 (FIG. FIG. 2 ), which is aligned in the radial direction of the roller body 7 and cooperates with a circular cross-sectionally shaped control rod 12, which control rod 12 is aligned radially to the roller body 7 and a clutch 13 is actuated.

The coupling 13 is arranged between the sections 4 and 5 of the shaft 3 to be connected and can be actuated or opened via the control rod 12. The coupling 13 has a ball 14 which is pressed into an annular space 15 between the two sections 4, 5 of the shaft 3, wherein the two sections 4, 5 of the shaft 3 each projecting into the annular space 15 projection 16 (FIGS. FIG. 1 ) or 17 ( FIG. 3 ) exhibit.

The ball 14 is pressed upon actuation of the clutch 13 in the annular space 15 and passes upon rotation of a portion 4, 5 of the shaft 3 to rest on a projection 16 or 17. If the section 4, 5 of the shaft 3 further rotated so moves the projection 16 or 17, the ball 14 until it rests against the second projection 17 or 16, so that over the ball 14, the two basically freely against each other rotatable sections 4, 5 of the shaft 3 can be rotated together.

To reset the control rod 12, a compression spring not shown is provided, which is supported on the one hand on an outside collar of the control rod 12 and on the other hand on a projection in a cylindrical, the control rod receiving space. When engaging the clutch 13, the control rod 12 is pushed onto the ball 14 and the compression spring, not shown, so that the ball 14 engages in the recess 15 and the compression spring is tensioned simultaneously.

To actuate the clutch 13, it is necessary that a key 10 is inserted with a mechanical secrecy in the form of a profiling in the keyhole 9 of the emergency lock 6, the pins 18 from holes 19 in the roller body 7 in receiving holes 20 shifts, so that the pins 18 release the roller body 7 and the roller body 7 in the opening 8 relative to the lock cylinder 2 is rotatable. For this purpose, the receiving holes 20 are aligned in the locked state of the emergency lock 6 coaxial with the holes 19, so that the pins 18 are arranged with a portion of their length in the holes 19 and with another part of their length in the mounting holes 20 and a rotation the roller body 7 in the opening 8 relative to the lock cylinder 2 do not allow.

The receiving holes 20 are formed as blind holes and have a frustoconical end. In the receiving holes 20 spring elements not shown are arranged which press the pins 18 into the bores 19 of the roller body 7.

The pins 18 are substantially cylindrical in shape and have at least one diameter reduction 21 in their central region. In addition, the pins 18 are formed conically on at least one front end 22, the pins 18 in the region of this end 22 form inclined surfaces which cooperate with a corresponding profiling of the key 10 during insertion of the key 10 in the keyhole 9. The pins 18 in the individual receiving holes 20 may be formed differently long. It can also be arranged coaxially in a bore 19 two pins 18, wherein both pins 18 each have at least one diameter reduction 21.

In addition, from the FIGS. 1 to 3 to recognize that the holes 19 and the receiving holes 20 and thus also the pins 18 in two rows next to each other in the lock cylinder 2 and in the roller body 7 are arranged. The bores 19, the receiving bores 20 and the pins 18 of the two rows are arranged offset to one another in the longitudinal axis direction of the roller body 7, so that in each case a bore 19 or receiving bores 20 of a row between two holes 19 and receiving bores 20 of the adjacent second row is arranged ,

The receiving bores 20 are formed open on one side in the lock cylinder 2, whereas the holes 19 are open on both sides in the roller body 7. This configuration serves to simplify the manufacture of the lock according to the invention in the region of the emergency lock 6, in which the pins 18 can be pushed into their position via the receiving bores 20 open on one side by the roller body 7.

The compressive stress of the compression spring pushes the control rod 12 back when turning back the key 10 in the emergency lock 6 in the starting position.

Below the keyhole 9, the roller body 7 has two bores 23 running in the axial direction of the roller body 7, the length of which corresponds at least to the length of the keyhole 9 and which serve to receive a respective pin 24 which is glued or pressed in the bores 23. The existing of a hardened metal and thus a drilling protection performing pins 24 prevent the falling out of the pins 18 from the mounting holes 20 so that the pins 24 are arranged parallel to the two rows of receiving holes 20 and the holes 19.

The pins 18 in the holes 19 may also be made of hardened metal be formed and thus represent another drilling protection.

In the locked state, the pins 18 lock the rotational movement of the roller body 7 in the lock cylinder 2, so that the clutch 13 is not actuated. In this state, the clutch 13 is disengaged, so that the two sections 4, 5 of the shaft are rotated against each other.

By inserting a closing code in the form of a profiling having key 10 in the keyhole 9, the pins 18 are displaced from the holes 19 of the roller body 7 in the receiving holes 20 of the lock cylinder 2, so that subsequently the roller body 7 relative to the lock cylinder 2 in the opening 8 can be twisted. By this rotation, the clutch 13 is closed by the control rod 12, the ball 14 presses into the annular space 15 between the two sections 4, 5 of the shaft. The ball 14 can then be brought into contact with the projection 16 at the portion 4 of the shaft 3 at a rotation of the first portion 4 of the shaft 3-. By a further rotation of the portion 4 of the shaft 3, the voltage applied to the projection 16 ball comes into contact with the projection 17 of the second portion 5 of the shaft 3, so that this positive connection between the sections 4, 5, the entire shaft 3 to the opening or actuation of a door latch can be rotated.

The key 10 can be pulled out only in a position of the roller body 7 from the keyhole 9, in which the ball 14 is disengaged, so that the clutch 13 is opened and an operative connection between the sections 4, 5 of the shaft 3 via the emergency lock. 6 does not exist. Regardless of this, the sections 4, 5 of the shaft can of course be brought into operative connection with the intended use of the lock on the second clutch, not shown, which second clutch is opened or closed via the electronic locking device.

That in the FIGS. 4 to 10 shown lock corresponds constructively and in its operation essentially the lock 1 according to the FIGS. 1 to 3 , It is to that extent on the above description of the embodiment of the lock 1 according to the FIGS. 1 to 3 directed.

In contrast to the lock 1 according to the in the FIGS. 1 to 3 illustrated embodiments consists of the control rod 12 formed control of an elastically deformable material, such as a plastic whose Deformability is limited to the effect that on the control rod, a rotational movement of the roller body 7 in the lock cylinder 2 with sufficient certainty in a longitudinal movement of the control rod 12 and the associated displacement of the ball 14 is possible.

The control rod 12 is guided in a bore 30 which is arranged radially to the longitudinal axis of the roller body 7 within the lock cylinder 2. The bore 30 has a diameter which is slightly larger than the diameter of a part of the control rod 12 which is at least round in cross-section, the control rod 12 being sealed off from the bore 30 by means of a seal 31.

With a lower end, the control rod 12 is positively connected to the roller body 7 of the emergency lock 6. For this purpose, the roller body 7 of the emergency lock 6 in the region of its arranged within the lock cylinder 2 end a pin 32 which engages in a bore 33 in the control rod 12. The pin 32 is arranged eccentrically of the roller body 7.

The seal 31 is made of an elastically deformable material, in particular of an elastomer, so that it fulfills the required sealing function and at the same time counteracts a movement of the control rod 12 by an excessive frictional force between the seal 31 and the wall of the channel 30.

The FIGS. 4 to 9 show the lock 1 in different closed positions, the FIGS. 4 and 5 show the lock 1 and the emergency lock 6 in a first closed position in which the sections to be connected 4, 5 of the shaft 3 are not connected to each other, so that the clutch 13 is disengaged. The FIGS. 6 and 7 show the lock 1 and the emergency lock 6 in a closed position between the disengaged position of the clutch 13 according to the FIGS. 4 and 5 and an engaged position of the clutch 13 according to the FIGS. 8 and 9 , These different positions of the clutch 13 are associated with a rotational movement of the roller body 7 by the key 10, as also in the FIGS. 4 to 9 can be seen.

The invention is not limited to the embodiment described above. In particular, instead of the described coupling between the sections 4 and 5 of the shaft 3 a Locking the shaft 3 may be provided which prevents rotation of the shaft 3 via a handle. About the clutch 13, this lock can be released, the clutch 13 is actuated by an operation of the emergency lock 6.

LIST OF REFERENCE NUMBERS

1 lock 19 drilling 2 lock cylinder 20 location hole 3 wave 21 Diameter reduction 4 section 22 The End 5 section 23 drilling 6 Emergency lock 24 pen 7 roller body 30 drilling 8th opening 31 poetry 9 keyhole 32 spigot 10 mechanical key 33 drilling 11 control surface 12 control rod 13 clutch 14 Bullet 15 annulus 16 head Start 17 Head Start; 18 pen

Claims (13)

1. A lock (1) comprising a locking cylinder (2) and an electronically controllable locking device which has a shaft (3) comprising two sections (4, 5) with handles arranged at the ends, wherein the sections (4, 5) of the shaft (3) can be brought into an operative connection via a coupling after recognition of an authorization code that has been entered into the electronic locking device, characterized in that the locking cylinder (2) comprises a single mechanical emergency lock (6) comprising a drum body (7) which is arranged in a rotatable manner in a cylindrical opening (8) of the locking cylinder (2), which emergency lock (6) can be actuated by a mechanical key (10), and by means of which lock (6) an operative connection between the sections (4, 5) of the shaft (3) can be established or loosened independent from the electronically controllable locking device.
2. A lock according to claim 1,
   characterized in that
   a control element, for example a control rod (12) is provided for establishing the operative connection, wherein the control element is preferably positively connected to the drum body (7) of the emergency lock (6).
3. A lock according to claim 2, characterized in that the emergency lock (6) comprises a pin (32) at one end, which pin engages into a correspondingly designed bore (33) in the control rod (12).
4. A lock according to claim 3, characterized in that the pin (32) is arranged on a front face of the drum body (7) in an offset manner with respect to the longitudinal axis of the emergency lock (6).
5. A lock according to claim 3, characterized in that the pin (32) is integrally formed with the drum body (7).
6. A lock according to claim 3, characterized in that the pin (32) is connected to the control rod (12) in a frictionally engaged and/or positive-locking manner.
7. A lock according to claim 2, characterized in that the control rod (12) is made of an elastically deformable material, in particular a plastic.
8. A lock according to claim 2, characterized in that the control rod (12) is guided in a channel (30) and comprises a seal (31), by means of which the control rod (12) is sealed against an inner wall of the channel (30).
9. A lock according to claim 2, characterized in that a coupling (13) is arranged between the sections (4, 5) of the shaft (3) to be connected, which coupling (13) can be closed or opened by means of the control rod (12) connected to the emergency lock (6), wherein the control rod (12) is made of an elastically deformable material, in particular a plastic.
10. A lock according to claim 2, characterized in that a coupling (13) is arranged between the sections (4, 5) of the shaft (3) to be connected, which coupling (13) can be closed or opened by means of the control rod (12) connected to the emergency lock (6).
11. A lock according to claim 8 or 10, characterized in that the seal (31) is made of an elastically deformable material, in particular an elastomer.
12. A lock according to claim 10, characterized in that the control rod (12) is guided in a channel (30) and comprises a seal (31), by means of which the control rod (12) is sealed against an inner wall of the channel (30).
13. A lock according to claim 12, characterized in that the coupling (13) comprises at least one ball (14) which can be pushed into an annulus (15) between the two sections (4, 5) of the shaft (3), wherein the two sections (4, 5) of the shaft (3) respectively comprise one projection (16, 17) which protrudes into the annulus (15).

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