EP0575701B1 - Lock, in particular mortise lock for outer doors - Google Patents

Abstract

The space requirement of a mortise lock for an outer door depends, above all, on the spindle dimension (37) and on the handle spacing (36). On the other hand, lock cases (1) of different sizes are required and are produced. The size of the drive for a latch (2) and a bolt (3) of such a lock therefore determines the minimum size of the lock case. Furthermore, there are versions for an only single locking of the door relative to the fixed frame, with only one bolt (3) of the lock, or multi-point locking by the use of push rods (74, 75) with locking members attached thereto. In the case of both single locking and multi-point locking, opening and closing and the securing of the closing position must be possible by means of a key inserted into a lock cylinder. Instead of closing via the key, closing can also take place via a handle which is drive-connected to a handle follower (5). The latch (3) can be actuated via the handle follower (5). In order to meet all these requirements, there is inserted into the lock case (1) an intermediate case (32) having a built-in unit (31, 39, 40) which is designed according to the particular needs. This also includes a two-part reversing device (17, 28), the upper part (17) of the reversing device, connected in an articulated manner (30) to the lower part (28) of the reversing device, being mounted rotatably on the handle follower (5). <IMAGE>

Description

The invention relates to a lock, in particular a mortise lock for an outer door, according to the preamble of claim 1.

Such locks are used, as I said, in front doors or apartment entrance doors, being inserted in the most common design as a mortise lock in a lock pocket of the door leaf and the like or a faceplate attached to the front. be held in the door leaf. After attaching this mortise lock to the door the door handle (s) and a locking cylinder are installed. In the case of an outer door, a lever handle is usually only on the inside, while a so-called knob, ie a handle that cannot be actuated, is mounted opposite on the outside. The latch can be pulled back with the help of the rotating door handle. If the bolt is in its ineffective position, the door can be opened when the latch is withdrawn. Unless there is a door handle or the like on the outside. rotatable handle is attached, the door can only be opened from the outside with the help of a key with which the latch can also be withdrawn. Furthermore, with the help of the key, the bolt can be moved from the outside as well as from the inside into the closed position or from the closed position into the release position.

There are also locks which are not only locked in the area of the lock or lock case with respect to the fixed frame, but also with the aid of additional locking devices below and / or above the actual lock or lock case. These locking devices must be operable with the bolt so that they can be brought into an effective position or returned from this to an ineffective position.

Locks are also known in which the bolt is turned into an effective position via the rotatable door handle or can bring it from this into the release position, the pusher naturally also being used here to actuate the latch. Such locks are available both with and without additional locking devices along at least the closing side of the door.

If you also consider that there are all these versions with different backset but also with different handle spacing, it is easy to see that this leads to hundreds of lock types and, consequently, each individual version is only manufactured in relatively small numbers, with correspondingly high manufacturing - but also storage costs. The "backset" in a lock is understood to mean the distance of the front edge of the lock cuff from the center of the operating element for the lock latch or to the geometric center of the follower. The "handle distance" is the measure from the center of the operating element for the lock latch or from the geometric center of the follower to the center of the lock cylinder or to the geometric center of the rotary member of the lock cylinder having the lock bit.

Backset sizes between 25 mm and 90 mm are common, in steps of 5 mm each. The usual handle spacing for today's designs is between 70 mm and 92 mm, with different step spacing.

In addition, the square receptacle of the handle follower, in which the square mandrel of a door handle is inserted, can also have different square dimensions. These days, these are between 7 mm and 10 mm, although a size of 8.5 mm is also common. Finally, variations in the lock faceplate are common, with standard versions between 16 mm and 20 mm. There is also a so-called U-cuff.

From EP 341 173 a lock of the type mentioned is known. This lock is a conventional lock with a lock housing, in which the individual components of the lock are assembled in the usual way, whereby at most small assemblies are installed.

Based on EP 341 173, the invention has for its object to provide a lock of the type mentioned in such a way that different lock variants can be created in the simplest way, with as few parts as possible having to be varied at least within one genre if one different lock size needed. In addition, the castle should consist of as few parts as possible.

To achieve this object, it is proposed according to the invention that the lock is designed according to the preamble of claim 1 in accordance with the characterizing part of this claim.

If you equip a lock case with a latch and a spring-loaded follower, on which an interchangeable upper part is rotatably mounted, this lock can be completed with various installation units. In a simple version, the installation unit is designed so that with the help of the lock cylinder inserted key the bolt can be locked back and forth. In addition, the interchangeable upper part is pivotally connected to the interchangeable lower part of the installation unit, so that the latch can also be withdrawn using the key.

The installation unit is suitable for any backset. All that is required is a latch length and bolt length corresponding to the respective backset. Furthermore, a wide variety of handle distances can be taken into account. An adaptation can take place here via the interchangeable lower part, which is chosen larger or longer with a larger lever distance and smaller or shorter with a smaller lever distance. The length of the lock case is identical for this as well as for all other installation units. Even the bolt and latch bearings, and thus their mutual spacing, are always the same in the lock case, which makes it possible to use the same locking plate for all lock variants.

If you use another installation unit, it is also easily possible to implement different backset dimensions and handle spacings in the manner described. Here too, if the backset is changed, all that is required is a shorter or longer latch or a shorter or longer bolt or a shorter or longer interchangeable part, in particular an interchangeable lower part, if the handle spacing is different. If this installation unit also has a Drive rod is equipped, so you can manage the movement of the bolt when closing back and forth on the up and down movement of the displaceably mounted drive rod, which is located inside the lock case and is preferably part of this installation unit. The plate-like drive rod is an easy-to-manufacture part that can easily be kept in different widths for the different backset dimensions in order to meet the dimensional requirements. The length of the drive rod is advantageously the same for all versions and it fits for all handle distances. With the help of the key inserted into a conventional lock cylinder, this is normally indirectly influenced by an intermediate gear on the two-part design according to the invention, so that when the key is turned in one direction the latch is retracted and when turning in the opposite direction by a corresponding action of the Gearbox on the drive rod and the suitable drive connection between the drive rod and bolt the latter can close or close. This version also offers the possibility of coupling at least one additional push rod to the drive rod, which or the like with at least one locking pin, roller pin. is equipped, whereby locking at other points at least the closing side of the door is possible. This is not only advantageous in terms of improved burglary protection, but also ensures that the door is level with the door fixed frame, which counteracts the warping of the door leaf.

Another installation unit ensures the same variants with regard to backset and handle spacing by selecting the dimensions, in particular the length of the bolt, but also the width of the drive rod belonging to this installation unit, in accordance with the requirements described above. It is a built-in unit in which the bolt is locked and closed with the help of the handle. Of course, the handle also serves to operate the latch. The key inserted in the lock cylinder is used only to lock the drive rod in the locked position, which then also indirectly locks the bolt against pushing back.

According to the principle, but not in all details, the installation units and the working and operating modes resulting from their construction are known. However, there was an adjustment, for example, via the two-part design of the change according to the invention or the mounting of a lever on the handle follower and its coupling with the drive rod.

It remains to be mentioned that when changing the handle spacing, the holes and recesses in the lock case for fastening rosettes, shields and the like. maintain their side or height distance to the hole for the trigger nut, which also contributes to cost savings.

It is advantageous that the follower is rotatable against the resistance of a return spring, in particular via an intermediate piece. If you turn the handle follower via the operating handle or pusher, this leads to the retraction of the latch and simultaneous tensioning of the return spring, which, after the pusher has been released, returns the latter and all parts coupled with it to the starting position. It is also proposed that the return spring is located in a spring housing, which is held in particular by means of fastening pins, in the lock housing or in the housing of the installation unit. In this way, the return spring can be preassembled particularly easily in the lock housing or in the housing of the installation unit.

Another embodiment of the invention results from claim 3. The toothed ring mentioned there, slotted for the passage of the locking cylinder, is known as such. Furthermore, a transmission of the power flow via, in particular two, intermediate wheels which are in engagement with the toothed ring and which transmit the rotary movement to at least one further gear wheel. Ultimately, the end gear of the gearbox or one the wheel upstream of the drive acts on the interchangeable lower part via the stop. The rotation of the key causes a rotation of the gear wheel equipped with the stop in the sense that the stop may hit the edge of the exchangeable lower part facing the locking cylinder after passing through a certain rotational movement and, when turning further in the closing sense, the changing lower part upwards against the Press the follower nut. It can be a superimposed lifting and rotating movement, which, however, is controlled by appropriate guides. In any case, this movement, at least in the direction of the stroke, of the interchangeable lower part causes the interchangeable upper part to rotate on the handle follower in such a sense of rotation that the retraction of the latch corresponds to its ineffective position. The action normally takes place on a trap tail inside the castle.

Turning the key in the opposite direction causes the transmission to act on the drive rod, which, due to its coupling with the bolt, pushes it outwards. Usually two full turns are provided for the rotation of the key in the locking direction.

A further embodiment of the invention contains claim 4. The planetary gear mentioned there is known as such, but its use in locks is new. Nevertheless, a detailed description is unnecessary here.

A particularly preferred embodiment of the invention is described in claim 5. The gear, in particular the gear wheel, causes the drive rod listed in this claim to be displaced. Depending on the direction of rotation of the key, the shift takes place in the downward or upward direction. If a pin is attached to the drive rod, which engages in an oblique slot of the bolt which forms a control curve, then the bolt can be pushed out, for example by pressing the lower edge of the control slot, and the bolt can be withdrawn by pressing against the upper edge of the oblique slot . The oblique slot can run, for example, at 45 ° to the direction of movement of the connecting rod and bolt.

The second pin mentioned in this claim engages in a likewise sloping slot or part of a slot of the drive rod, the inclination of which can be the same as or similar to that of the oblique slot on the bolt. If, for example, the drive rod is shifted downwards using the key via the gearbox, the effect is Control slot on the second pin pivoting of the lower part in the sense that its edge comes out of the range of motion of the stop of the gear wheel, so that this stop with the edge and thus with the lower part can no longer act in the sense of actuating the change lever. The control slot is expediently angled, with the other pin of the angular control slot being assigned to the second pin after the lower end of the interchangeable lower part has been pivoted out of the movement area of the stop. In this respect, it is a kind of lost motion. The rotational movement of the gear wheel, in particular the gear end wheel, is converted into a displacement movement of the drive rod by known means, for example pinion and rack.

Figur 1

eine Draufsicht auf eine erste Ausführungsform des Schloßes bei abgenommenem Gehäusedeckel;

Figur 2

eine entsprechende Darstellung einer weiteren Variante der Erfindung;

Figur 3

die Einbaueinheit des Ausführungsbeispiels der Figur 1;

Figur 4

die Einbaueinheit der in Figur 2 gezeigten Variante;

Figur 5

das Schloß ohne Einbaueinheit;

Figuren 6 bis 8

in schematischer Darstellung die stufenweise Vergrößerung des Schloßgehäuses von der kleinsten Schloßgehäusegröße links bis zur größten Schloßgehäusegröße rechts, wobei das Dommaß aller linken Figuren und aller rechten Figuren jeweils gleich ist, während der Drückerabstand sich von oben nach unten verkleinert, d.h. in Figur 6 den größten und in Figur 8 den kleinsten Wert aufweist.

Further refinements and the advantages resulting therefrom result from the subclaims and the following description of various exemplary embodiments. The drawing shows these exemplary embodiments. Here represent:

Figure 1

a plan view of a first embodiment of the lock with the housing cover removed;

Figure 2

a corresponding representation of a further variant of the invention;

Figure 3

the installation unit of the embodiment of Figure 1;

Figure 4

the installation unit of the variant shown in Figure 2;

Figure 5

the lock without installation unit;

Figures 6 to 8

a schematic representation of the gradual enlargement of the lock housing from the smallest lock housing size on the left to the largest lock housing size on the right, the dome size of all left figures and all right figures being the same, while the pusher distance decreases from top to bottom, ie in 6 has the largest and in FIG. 8 the smallest value.

The lock housing 1 is closed at the top by means of a removed cover and therefore not shown in the drawing. Inside the housing, a latch 2 and a bolt 3 can be moved in the sense of the double arrow 4. In addition, a follower 5 is rotatably mounted in the sense of the double arrow 6 in the lock housing 1. It has an opening 7, in particular a square opening for receiving a square mandrel of a handle or the like. Actuating element for at least the trap 2. A radially projecting extension 8 of the follower 5 rests on the upper end of an intermediate piece 10 which is displaceable in the sense of the double arrow 9 and whose lower end is assigned to the upper end of a return spring 11. It is a helical compression spring, which is held with its lower end in a spring housing 12, which, for example, by means of pins or the like. Elements in the lock housing 1 is mounted. So if you turn the follower 5 in the direction of arrow 13, this causes on the one hand a compression of the return spring 11 and on the other hand a retraction of the latch 2 in the direction of arrow 14. This is achieved in that a further radially projecting extension 15 of the follower 5 bears against a peg-like projection 16 of an interchangeable upper part 17, which is rotatably mounted on the follower 5. The For example, in FIG. 1, the upward-facing end 18 of the interchangeable upper part 17 bears against a shoulder 19 of the inner end of the trap 2 or the trap tail 20. If the hole section for the follower 5 and a rosette or a long plate is lowered, the end 18 also shifts downward. Because the contact surface 19 of the shoulder at the trap end is relatively long, a relatively large area can be bridged. A total area of approximately 20 mm is provided. This makes the production of preferably two optionally usable sizes of the interchangeable upper part necessary.

A lock cylinder 22 of known type, for example a so-called profile cylinder, is inserted into an opening 21 on the bottom of the lock housing and on the lock cover. The distance of the opening 21 from the lower edge of the lock housing is preferably the same for all variants. The lock bit 23 of the profile cylinder, which is only indicated in FIG. 1 and which can be rotated around the geometric axis 25 with the aid of a key inserted in the lock cylinder in the sense of the double arrow 24, causes an interposed drive device 26 in one direction of rotation to push the bolt out in the direction of the arrow 27 and when the key is turned in the opposite direction, the bolt is withdrawn in the opposite direction of the arrow 27. The drive device 26 has at least one tumbler known per se.

If, with the Riegl 3 - position according to FIG. 1, closed, the key is turned in the closing direction, this causes the lower part 28 to move approximately in the direction of arrow 29, i.e. from the bottom up. The upper end of the interchangeable lower part is articulated to the interchangeable upper part 17 via a bolt 30, i.e. this lock is advantageously equipped with a two-part change. If it is a pure swivel joint in the area of the bolt, the swivel lower part 28 must execute a lateral movement slightly superimposed on the lifting movement 29 because of the pure rotational movement of the interchangeable upper part 17. There is a second bore 30a on the interchangeable upper part 17, into which the bolt 30 can optionally be inserted. From a certain reduction in the handle spacing 36, the lower part 28 is articulated to the upper hole 30a.

From the foregoing it is clear that in addition to actuating the handle by means of the key actuation mentioned, latch 2 is also withdrawn in the direction of arrow 14, i.e. in an ineffective position and can open the door.

FIG. 3 shows the installation unit 31 which is inserted into the lock housing 1 of the embodiment according to FIG. 1. This installation unit has an intermediate housing 32, which is inserted into a receptacle 33 of the lock housing 1 can be. Fastening bores, for example 34 and 35, or fastening threads are located on the lock housing in order to fix the intermediate housing 32 to the lock housing 1. It is easy to see that with a handle spacing 36 which is greater than that in FIG. 1, one only has to choose a longer change, in particular a somewhat longer change lower part. All other parts of this lock do not need to be modified. If, however, the backset is larger than shown in Figure 1, all that is required is a longer latch 2 and a longer bolt 3. All other parts of the lock can remain unchanged. The pusher distance 36 pays off in accordance with FIG. 1 from the geometric center of the opening 7 to the geometric axis of rotation 25 of the locking bit 23. The backset 37 is determined by the distance of the geometric center of the opening 7 from the front edge of a faceplate 38 to which the lock housing 1 is attached is screwed on, for example. The faceplate is equipped with corresponding openings for the latch 2 and the bolt 3.

FIG. 4 shows a further installation unit 39. It can be installed in the lock housing according to FIG. 5 instead of the installation unit 31.

The installation unit 39 is installed in the lock housing 1 of Figure 2. As far as the parts with those of Figure 1 are identical, the same reference numbers are used.

In this embodiment, the lock bit 23, not shown, of the lock cylinder 22 drives a slotted ring gear 41 in a known manner. Its rotational movement is transmitted via the two intermediate wheels 42 and 43 to a gear, preferably a planetary gear 44. With a known implementation of the rotary movement into a sliding movement, this drives a drive rod 45 in the direction of arrow 29 or in the opposite direction, depending on the direction in which the key is turned. The drive rod 45 is guided in the lock housing 1. For this purpose, it is provided with two open-ended slots 46 and 47, in each of which a guide pin 48 or 49 engages, which is held on the lock housing 1 and on the cover.

The drive rod 45 carries a transversely projecting pin 50 which engages in an oblique slot 51 of the bolt 3. If, starting from the position shown in FIG. 2, the drive rod 45 is moved downward in the direction of the arrow 29, the pin 50 in conjunction with the oblique slot 51 causes the bolt 3 to be pre-closed in the direction of the arrow 27. Usually, the locking bit 23 becomes 360 ° twice rotated to fully lock the latch 3, but this need not necessarily be the case.

There is a transversely projecting stop 53 on the gear 52.

It works together with an edge 54 pointing downward at the lower end of the interchangeable lower part 28. If you turn the key in the sense of a closing movement of the bolt 3, the stop 53 comes to rest against the edge 54. As a result, the interchangeable lower part 28 is displaced approximately in the direction of arrow 29, which has the same effect as the corresponding movement of the interchangeable lower part of the figure 1.

On the drive rod 45 there is yet another oblique slot 56 which merges into a straight slot 57 which extends parallel to the direction of displacement 9 of the drive rod 45. Both together form a control slot 58. A pin 59 of the interchangeable lower part 28 engages in this, said pin 59 being at a distance from the bolt 30 as shown in FIG. A downward movement of the drive rod 45 in the direction of the arrow 29, due to the oblique slot 56, causes the interchangeable lower part 28 to pivot in the direction of the arrow 55. As a result, the edge 54 of the interchangeable part comes out of the movement range of the stop 53. The straight slot part 55 allows a further downward movement after the pivoting the drive rod 45 opposite the pin 59.

In the exemplary embodiment in FIG. 2, a push rod 74 or 75 is coupled to the upper and lower ends of the drive rod 45. Each carries, in a manner not shown, a locking element, for example a roller pin or the like, with a striking plate. works together on a fixed frame. Simultaneously with the locking of the bolt 3, this locking element in the striking plate or the like. transferred to a locking position. In this way, a multi-point locking of the door is achieved and, in addition, one can use the roller pin or the like. secure the flatness of the door. The push rods are covered by the faceplate 38 or faceplate extensions. There is a corresponding locating groove on the front of the door leaf. In addition, are in a known manner on the push rods Elongated holes made to allow the fastening screws of the faceplate to pass through the door leaf. Of course, fastening holes and other known connecting elements are also present on the lock housing and / or cover in order to hold the cover on the lock housing on the one hand and to ensure the fastening of the lock case in the pocket of the door leaf on the other hand.

There are a whole series of bores and openings on the lock housing 1. The holes 81 for the follower 5 and the holes 82 and 83 for fastening screws of rosettes or shields advantageously have the same distance and the same size in all variants in order to achieve standardization and cost reduction in this respect. The same applies to the cutouts 84 and 85 which can be used in this context. The distance of the cutout 84 from the upper lock case end is identical in each case.

From the above it is clear that with the inventive design of the lock and a few installation units, a large number of locks of all sizes and functions can be made available, only a few parts having to be replaced by longer or shorter ones in order to enable a different lock size. As a result, inventory is reduced and special requests can be fulfilled quickly and easily without this leading to unnecessarily high or unacceptable production costs.

Claims (6)

1. A lock, in particular a mortise lock for an exterior door, with a bolt (3) and a latch (2) located parallel displaceably in a lock housing (1), wherein the bolt (3) can be actuated by means of a key, and wherein the latch (2) can be selectively actuated by means of a pusher with a pusher hinge (5) or with the key via a two-part changer consisting of a lower changer element (28) and an upper changer element (17) hingedly connected therewith, and with a receiver (21) for a lock cylinder (22), wherein the two-part changer (17, 28), whose upper changer element (17) is rotatably seated on the pusher hinge (5) and is drivingly connected with the latch (2), can be driven by the bolt toe (23) of the lock cylinder (22), characterized by a built-in unit (31, 39) which can be inserted into the lock housing (1) and has an intermediate housing (32) or the like with the bolt (3) and the receiver (21) for the lock cylinder (22) and the lower changer element (28), wherein the size of the hinge pin (37) and therefore the width of the lock housing (1) are respectively determined solely by the length of the bolt (3) and the latch (2) or its latch tail (20), and the pusher distance (36) is determined solely by the length of the lower changer element (28).
2. A lock in accordance with claim 1, characterized in that a shoulder (15) of the pusher hinge (5) rests against or can be placed against a protrusion, pin (16) or the like, of the upper changer element (17) and carries the upper changer element along in the direction of rotation (13) when the pusher is operated, wherein the upper changer element pushes against a shoulder (19) of the latch (2) in the sense of a retraction of the latch (2).
3. A lock in accordance with claim 1 or 2, characterized in that the bolt toe (23) drives a gear ring (41), which is rotatably seated in the intermediate housing (32) or the like of the built-in unit (39) and is part of a gear, wherein a gear wheel (52) has a stop (53), which cooperates with an edge (54) of the lower changer element (28) facing away from the upper changer element (17) in the course of a rotation of the bolt toe (23) in the direction of opening in the sense of a retraction of the latch (2).
4. A lock in accordance with claim 3, characterized in that a portion of the gear is embodied as a planetary gear (44) and the entire gear with the lower changer element (28) is located in the built-in unit (39).
5. A lock in accordance with claim 3 or 4, characterized in that the built-in unit (39) has a drive rod (45), which is displaceably guided crosswise in respect to the bolt (3) and the latch (2) in the intermediate housing (32) of at least the built-in unit (39) and has a crosswise projecting pin (50), which engages an oblique slit (51) of the bolt (3), and that a pin (59), which is approximately parallel therewith, of the lower changer element (28) engages a control cam (58) or a control slit, wherein the lower changer element (28) is pivoted out of the movement area of the stop (53) via the control slit (58) when the bolt (3) is extended.
6. A lock in accordance with at least one of the preceding claims, characterized in that the lock housing (1) can be closed by means of a cover and that receivers, fastening holes, passage holes, cutouts, threads and the like are provided, in particular for the secure fastening of the built-in unit and for mounting key rosettes or door plates.

Images