EP0096229B1 - Lock for a door, a window or the like - Google Patents

Abstract

1. Lock for a door, a window or the like, with a key operable gearing with profiled or lock barrel (6) for the actuation of at least one bolt (4) and/or latch (3) as well as possibly at least one additional lock member on a drive rod (8, 9), the lock barrel being removably pushed into a radially slotted annular gearwheel (10) and the gearwheel (10) which is adapted to be driven directly by the drive nose (12) of the lock barrel (6) being capable of being locked at least in its assembly position for the lock barrel (6) by means of a lock device (20, 21) which can be rendered inoperative, characterized in that locking device (20, 21) has a locking member (22, 23) adapted for a spring loaded (30, 41) movement towards the gearwheel (10), the locking member (22, 23) being capable of being interlocked with the teeth of the gearwheel (10) constructed as a toothed gearwheel and/or with a catch housing (38) on the gearwheel (10).

Description

The invention relates to a lock for a door, a window or the like., With a key-operated transmission with profile or lock cylinder for actuating at least one bolt and / or a lock latch, the lock cylinder being removable in a radially slotted, ring-shaped gear wheel inserted and the gear wheel can be locked at least in its assembly rotational position for the lock cylinder by means of an overriding device of the lock. Such a lock has become known from EP-A-0 007 395. It is preferably installed in external doors and is called a security lock due to the use of a profile or locking cylinder.

With the key of the lock cylinder you can adjust a bolt in a known manner and usually also the lock latch. The lock latch can also be actuated from the inside, for example, by a door handle, however, the pulling of the lock latch by an outer door handle is not provided for an outer door. In both cases, the bolt or bolts are locked and unlocked using the key and locking cylinder. Modern locks have, in addition to the horizontally lockable and lockable bolt arranged directly on the lock, also vertically displaceable, additional bolt members, so that the door, the window or the like can be locked in more than one place with the frame or the like .

In order to protect the locking cylinder from damage and dirt and only have to hand over the key to the authorized person, the locking cylinder is not installed at the same time as the lock, but usually much later. On the other hand, the locksmith must check the functionality of the lock. For this purpose, he normally does not use a locking cylinder with a key, but a so-called construction cylinder. In order to be able to use this, he must override the locking device installed by the fitting manufacturer, which prevents the gear from rotating and thereby enables the immediate, effortless insertion of either a locking cylinder or the construction cylinder mentioned. The latter also serves to operate the lock during the construction phase. In locking systems, it is recommended to use the locking cylinders at the end of the construction work if possible.

When the lock of the type mentioned above, the gearbox and, above all, the radially slotted gearwheel is held in the assembled rotational position with the aid of a shear pin. Accordingly, the locking device can be overridden there by shearing off this bolt. This happens when the lock is started up for the first time, i.e. even when using a construction cylinder. Experience has shown that after using a construction cylinder, the anti-rotation lock for the gearbox is no longer used. If the door is shaken or the like, the non-self-locking gear can turn after the bolt has been sheared off. If the locksmith now wants to use the lock cylinder and the gear has shifted somewhat due to the vibrations mentioned, he can no longer carry out the assembly without further ado, rather he has to try to manipulate the gear back to the "zero position" or the assembly turning position turn back. This is time consuming and cumbersome and does not rule out damage.

From DE-C-625 117 it has become known to hold a rotary member of the drive lying in the power flow between a key nut and the bolt by means of a disengageable locking device in predetermined rotational positions in a lock with a bolt, the locking device consisting of a spring-loaded locking member, which engages in one of several catches of the rotary member. As a result, the flow of force to the bolt on this rotary member can be blocked, but not the rotary movement of the key nut into which the key is to be inserted immediately. As a result, the key nut can rotate a certain amount despite the effective locking device, so that the key can no longer be inserted easily.

In the case of a lock of the type mentioned at the outset, however, it is necessary that no part of the drive and in particular not the slotted gearwheel receiving the lock cylinder can be rotated before the lock cylinder is installed. For this reason alone, this locking device is not suitable for use in a generic lock. In addition, the locking device in the previously known lock is released by means of an elaborate tumbler consisting of two complicated parts. This tumbler is actuated with the aid of the key, and this on the one hand requires the locked rotary member to stand still during the actuation of the tumbler and on the other hand limits the rotary movement of the rotary member to a fraction of a full revolution.

Because at the lock of the type mentioned, the gear wheel must make at least one, but preferably two full revolutions due to its coupling with the lock cylinder and a kind of forward rotation for releasing the locking device before the rotary movement for actuating the bolt is not possible, this known locking device , which otherwise serves a different purpose than the locking device mentioned at the beginning, is unsuitable for installation in a lock of the generic type.

The object of the invention is therefore a castle called the beginning ten kind so that it still allows the use of a construction cylinder, but on the other hand after the removal of the construction cylinder or the like. The aforementioned "zero position" or "assembly rotation position" of the gearbox and thus, above all, of the slotted, ring-shaped gearwheel is reliably guaranteed.

To solve this problem, the invention proposes that the lock is designed according to the preamble of claim 1 in accordance with the characterizing part of this claim.

When using a single, special snap-in receptacle of the gear wheel, only a single secured position of the gear, namely the aforementioned zero or assembly rotational position, is possible. If the locking member interacts with the toothing of the gear wheel designed as a gear, there are of course several possible locking positions according to the number of teeth, but the locking is carried out by the manufacturer so that the gear is in the assembly rotational position for the locking cylinder. If this is left later when checking the functions of the lock, the locking still takes place again at exactly the same point on the gear, because the construction cylinder or the like can only be removed in this rotational position of the gear. It is possible without difficulty to design the locking device so that it automatically comes into operation even when the locking cylinder is removed, provided that it remains permanently unlocked in normal operation when the locking cylinder is inserted. On the other hand, one can also provide a permanently functional disengaging locking device that is not deactivated by the insertion of the locking cylinder.

The "zero position" or "assembly rotation position" for the lock cylinder can be locked by means of this locking device of the lock. In addition, the function of the lock, that is, the flawless movement of the bolt or bolts or the lock latch, can be checked by means of a construction cylinder or a similar device as before. In order to be able to remove the construction cylinder or the like again, the gear must be adjusted so that it returns to its assembly rotational position. If the construction cylinder or the like is now removed, the locking device holds the slotted ring-shaped gearwheel in a rotationally secure manner, and thus adjustment of the other gearwheels is also not possible. On the other hand, the slot of this gear wheel is exactly aligned with the corresponding openings in the lock housing, the door rosettes and the like. Like. So that after checking the functions of the lock, the lock cylinder can be inserted immediately and effortlessly.

It would be readily possible to secure another gearwheel in the assembled rotational position by means of the locking device instead of the slotted annular gearwheel, but the cooperation of the locking member with the slotted annular gearwheel has advantages. In addition, this gearwheel is more suitable than another gearwheel for reasons of space. One advantage is that the smallest locking force (lowest torque) is required on the slotted annular gear.

In a further development of the invention it is provided that the locking member is designed in the manner of a cutter. Schnepper are characterized by a simple and inexpensive construction with great robustness.

Another variant of a lock with a bearing collar on the gear wheel provides that the latching receptacle is located on the outside of the bearing collar and the locking member can be latched in an approximately radial direction. If the spring action of the tractor is not overridden when the lock cylinder is inserted or secured, the locking element disengages from its catch when the lock is actuated and re-enters it after a 360 ° rotation of the bearing collar.

A further embodiment of the invention provides that the locking member has a cup-shaped shape, the inside of which is the load spring designed as a helical compression spring and a spherical or similarly shaped locking element is formed on the outside of its pot base. Because of its spherical or conical or frustoconical shape, the aforementioned automatic snapping in and out can easily take place if the catch is shaped accordingly, for example providing an entry and exit slope. It should not be overlooked here that a relatively low locking force is sufficient to keep this gear in the assembly rotational position, because when the lock is installed, twisting can only be expected due to vibrations or comparable effects on the lock.

The locking member is expediently inserted transversely to its longitudinal axis in a receptacle of a bearing part for the gear wheel and held or additionally held therein by means of a stopper-like closure member. In this way it can be installed and removed again very easily. Installation is initially carried out with the spring tensioned, and in the final assembly position of the locking member, its locking element then automatically jumps into the locking receptacle of the gear wheel. After attaching the plug-like closure member, the assembly of this locking device is finished.

Another variant of the invention is characterized in that the locking member has a bore or a window extending transversely to its locking direction, the center of which is somewhat offset in relation to the geometrical axis of the fastening thread in the locking cylinder for the locking cylinder retaining screw towards the gear wheel in the locking position, however, the elongated geometric axis is still within the hole. If you insert the lock cylinder retaining screw into this lock after inserting the lock cylinder, its inner, usually somewhat pointed end presses against the edge of the window or the bore facing away from the gearwheel, and the interaction of these two inclined surfaces results in the lock cylinder being pressed in deeper - Holding screw a displacement of the locking member in the unlocking direction. If the locking cylinder retaining screw is pushed completely through the window of the locking member, then a complete release of the gear wheel is achieved by the locking member. After passing through the locking member or the locking member window, the retaining screw is inserted into the lock until the fastening thread of the locking cylinder is reached or the screw head subsequently comes to rest on a faceplate or cover rail of the lock. If the lock cylinder is to be replaced, the retaining screw must first be removed again, and the locking element automatically functions again after the retaining screw has been removed, the locking then taking place in the correct position of the gearwheel because of the still installed locking cylinder.

Another advantageous embodiment of the invention is that the locking member is slidably guided in a bearing part of the gear wheel, which has a through hole for the lock cylinder retaining screw on both sides of the bore or the window of the locking member. In this way you get two abutments for moving the locking member against the resistance of its locking spring.

Furthermore, it is very advantageous that the locking direction of the locking member runs approximately perpendicular to the axis of the locking cylinder retaining screw and approximately parallel to the longitudinal center plane of the locking cylinder, but is laterally offset with respect to the longitudinal center plane, the free end of the locking member in the locking position in a tooth space engages and has a run-up slope on which one of the teeth forming the tooth gap rests. Because of this run-up slope, a check of the lock with the aid of a construction cylinder is readily possible, because its member corresponding to the drive lug of the lock cylinder rotates approximately on the same path as the teeth of the slotted ring-shaped gear. The teeth and also this link of the construction cylinder slide on the slope of the locking member when the gear is turned by means of the construction cylinder. When turning back, the teeth act on the free end of the locking member and push it in the unlocking direction as far as is necessary to move the tooth in question past. When removing the construction cylinder, however, the gearbox is again in its correct rotational position. The run-up slope of the locking member expediently lies in the range of rotation of the drive lug of the locking cylinder.

• Fig. 1 eine Seitenansicht des Schlosses mit einer Schnittdarstellung im Bereich der Arretiervorrichtung,
• Fig. 2 in vergrößerter Darstellung einen Ausschnitt aus Fig. 1,
• Fig. 3 eine der Fig. 1 entsprechende Darstellung bei eingesetztem und gesichertem Schließzylinder,
• Fig. 4 eine der Fig. 1 entsprechende Darstellung einer zweiten Ausführungsform,
• Fig. 5 eine vergrößerte Darstellung eines Ausschnitts aus Fig. 4 mit einer Schnittdarstellung im Bereich der Arretiervorrichtung,
• Fig. 6 einen Schnitt gemäß der Linie VI-VI der Fig. 4.

Two exemplary embodiments of the invention are shown in the drawing. It shows

• 1 is a side view of the lock with a sectional view in the area of the locking device,
• 2 is an enlarged view of a section of FIG. 1,
• 3 shows a representation corresponding to FIG. 1 with the locking cylinder inserted and secured,
• 4 shows a representation corresponding to FIG. 1 of a second embodiment,
• 5 shows an enlarged illustration of a detail from FIG. 4 with a sectional illustration in the area of the locking device,
• 6 shows a section along the line VI-VI of FIG. 4th

In the housing 1 of the lock is a gear 2, which is preferably designed as a gear transmission and is used to actuate a latch 3 and a bolt 4 with the help of a key which is inserted into the keyhole 5 of a lock cylinder 6. The latter is a conventional profile cylinder. This is usually only inserted into the lock when the window or door in which this lock is installed is fully assembled and there is no longer any risk of damage and contamination of the lock cylinder. The lock cylinder is secured in a known manner by means of a retaining screw 7 against shifting, but also against unauthorized removal, the screw head being inaccessible in a known manner when the door is closed or the like. Incidentally, drive rods 8 and 9 can also be moved via the transmission 2, which at least each carry a locking member which cooperates with a corresponding striking plate on the frame or the like, so that the door or the like at more than one point can be locked. On the one hand, this serves to protect against warping and, on the other hand, it also increases the security against burglary.

The construction of the transmission 2 is not important in the following, rather the transmission can also be designed differently from that of the exemplary embodiment. It is important, however, that it has a radially slotted, ring-shaped gear wheel 10, into which the locking cylinder 6 can be inserted from the outside, ie through an opening of the housing plate 11 which is shaped according to the contour of the locking cylinder and, if appropriate, also a rosette of the door. Disassembly takes place in the opposite direction. The drive lug 12 of the locking cylinder is in its final assembly position exactly at the level of the ring gear 13 of this gear wheel 10, which is designed as a gear wheel. A gap that may exist between the two facing ring gear ends and the drive lug is known in the manner of a bridging limb closed. Accordingly, turning the key causes the gear wheel designed as a slotted ring to be turned, for example in the direction of arrow 14. Via the interposed further gear members and a link control 15, the rotary movement is converted into a displacement movement of the bolt 4 in the direction of arrow 16. A rotary movement against the arrow 14 causes the latch 3 to be retracted using the key via the gear 2 and the rocker 17. The latter of course also serves to move the drive rods 8 and 9, which then go into their locking position when the bolt 4 also enters its striking plate on the frame side.

Because the housing plate 11 and possibly a further housing plate 18 and rosettes on both sides of the door or window preferably have a breakthrough corresponding to the profile of the locking cylinder 6, the locking cylinder can only be easily inserted into the fully assembled lock if the gearbox does this 1, in which the central axis of the slot in the gear wheel 10 lies exactly in the longitudinal center plane of the built-in locking cylinder 6. To ensure this, this lock is equipped with a locking device 20 (Fig. 1 and 3) or 21 (Fig.4 and 5). Both exemplary embodiments are a device which can be disengaged or unlocked and which allows the lock to be checked with the aid of a so-called construction cylinder, but on the other hand automatically ensures the assembly rotational position of the gearwheel 10 after the construction cylinder has been removed, but also after the locking cylinder 6 has been removed.

In both cases, a spring-loaded, movable locking member 22 or 23 designed in the manner of a snapper is used. Fig. 2 shows the locking member 22 on an enlarged scale and you can also see there the engagement of the locking member in the tooth gap 24, that is between the teeth 25 and 26. The tooth 26 rests on the free end face 27 extending transversely to the direction of displacement 28, while the tooth 25 bears against the inclined surface 29 which is inclined to this, which lies in the rotation range of the drive lug 12. If the gearwheel 10 is now rotated, for example with the aid of a construction cylinder, in the direction of arrow 14, the tooth 25 presses the locking member 22 in the direction of arrow 28 against the resistance of the load spring 30 because the surfaces 27 and 29 form it Corner protrudes somewhat into the range of motion of the tooth head. In any case, a rotation of the gear wheel 10 is possible both in the direction of arrow 14 and in the opposite direction, so that the function of the lock can be checked without the aid of the locking cylinder 6. On the other hand, however, the gearwheel 10 is in the rotational position required for the assembly of the lock cylinder 6 when the construction cylinder or a similar auxiliary device for checking the lock is removed, and this is automatically secured by the locking device 20 and 21, respectively.

The locking member 22 has a window 31 which extends transversely to its locking direction and, at its end remote from the gear wheel 10, has an oblique edge 32 which forms a run-up slope for the pointed end 33 of the retaining screw 7. Because the center of the left end of the opening is somewhat offset relative to the axis 34 of the screw 7 against the gear wheel 10, although the extended geometric axis of the fastening thread in the lock cylinder is still within the window, but on the other hand that in the two through holes 35 and 36 of the bearing part 37 guided retaining screw 7 can move the locking member 22 in the direction of arrow 28 against the resistance of the loading spring 30 via the oblique edge 32, a secure unlocking of the locking device 20 takes place as soon as the thread of the screw has at least reached the through hole 36. During the use of the lock cylinder, this locking device is permanently deactivated.

According to FIG. 5, the locking member 23 of the locking device 21 engages in a radially extending latching receptacle 38 of the gear wheel 10. It is located on a bearing collar 39 of the gearwheel 10 arranged on the side of the teeth. Because the latching receptacle 38 is provided with an inlet and outlet slope, the gearwheel 10 can be rotated in both directions with the aid of, for example, a construction cylinder and thereby check the functioning of the lock. After a 360 ° rotation of the gear wheel 10, the locking element 40 of the cup-shaped locking member 23 loaded by the internal spring 41 engages again in its locking receptacle 38 with a spherical locking element formed on the outside of the pot base. 6 in the direction of arrow 43 is inserted into a receptacle 42 of a bearing part 44 and subsequently secured by means of a plug-like closure member 45. The locking device 21 is therefore not overridden during the use of the lock with a lock cylinder 6, but only disengaged and engaged when the assembly rotational position is left or reached again.

Claims (9)

1. Lock for a door, a window or the like, with a keyoperable gearing with profiled or lock barrel (6) for the actuation of at least one bolt (4) and/or latch (3) as well as possibly at least one additional lock member on a drive rod (8, 9), the lock barrel being removably pushed into a radially slotted annular gearwheel (10) and the gearwheel (10) which is adapted to be driven directly by the drive nose (12) of the lock barrel (6) being capable of being locked at least in its assembly position for the lock barrel (6) by means of a lock device (20, 21) which can be rendered inoperative, characterised in that the locking device (20, 21) has a locking member (22, 23) adapted for a spring loaded (30, 41) movement towards the gearwheel (10), the locking member (22, 23) being capable of being interlocked with the teeth of the gearwheel (10) constructed as a toothed gearwheel and/or with a catch housing (38) on the gearwheel (10).

2. Lock according to Claim 1, characterised in that the locking member (22, 23) ist constructed like a tumbler.

3. Lock according to Claim 2, with a bearing shoulder (39) on the gearwheel (10), characterised in that the catch housing (42) is on the outside of the bearing collar (39) and in that the locking member (23) engages ratchetwise in a substantially radial direction.

4. Lock according to Claim 2 or 3, characterised in that the locking member (23) is pot-shaped, having in its interior the loading spring (41) which is constructed as a coil thrust spring and in that on the outside of the bottom of the pot-shaped member is a convex or similarly shaped catch element (40).

5. Lock according to Claim 4, characterised in that the locking member (23) is inserted transversely of its longitudinal axis in a housing (42) in a bearing part (44) for the gearwheel (10) being held therein or being additionally held by means of a plug-like closure member (45).

6. Lock according to Claim 2, characterised in that the locking member (22) has extending transversely to its direction of engagement a bore or a window (31), the centre of which, in the engaged position, is somewhat offset in respect of the geometrical axis (34) of the fixing thread in the lock cylinder (6) for the lock cylinder retaining screw (7), in the direction of the gearwheel (10), the extended geometrical axis (34) still being within the bore or window (31) however.

7. Lock according to Claim 6, characterised in that the locking member (22) ist displaceably guided in a bearing part (37) of the gearwheel (10) which has on either side of the bore or window (31) of the locking member (22) a through- bore (35, 36) through which the lock cylinder retaining screw (7) can pass.

8. Lock according to Claim 6 or 7, characterised in that the direction of engagement of the locking member (22) extends substantially at a right-angle to the axis of the lock cylinder retaining screw (7) and substantially parallel with the longitudinal central plane (19) of the lock cylinder (6), but is laterally offset in relation to the longitudinal central plane, the free end of the locking member (22), when in the engaged position, engaging into a gap (24) between teeth and having a ramp member (29) on which rests one of the teeth (25) which form the gap between the teeth.

9. Lock according to Claim 8, characterised in that the ramp (29) of the locking member (22) lies in the range of rotation of the drive nose (12) of the lock cylinder (6).

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