EP1437464A2 - Mortise lock - Google Patents

Abstract

A door frame made of tubular metal with a push-fit lock (1) with pin dimension (4) of diameter 45 mm or less. The lock has a three-part coaxial lock catch (9) operating a spring-loaded catch bolt. The lock nut mechanism consists of an external outer nut (5) for an external lever (12), with a nut center section (7) link to an inner nut (6) inner and lever (11).

Description

The present invention relates to a mortise lock with a Backset less than or equal to 45 mm.

Such mortise locks are preferably used for installation in Metal frame doors.

Thus, such locks that have a door handle on both sides should have to actuate the lock, different Functions enable them with two from each other independent lock nuts, of which each interacts with a lever handle.

Such locks can be used, for example, in an escape door Find use when z. B. the door with the bolt extended from the inside at any time via the handle and without Key use should be open during the push button on the outside of the door with the bolt locked in the Is idle.

Such locks are such. B. known from EP 05 375 31st B1.

There is a lock with a split nut described, in which the inner nut and the outer nut have the same function are. Depending on the position of the clutch slide however, either the inner nut and the outer nut are operatively connected with the middle part of the nut or - depending on the design of the clutch slide - only the inner nut.

The lock according to EP 0 537 531 is only with a swivel bolt equipped and is intended for installation in tubular frame doors. In contrast to this design, however, see standardized Mortise locks for use in tubular frame doors (DIN 18251-2 from November 2002) not just a bolt, but also a lock latch.

It is obvious that the placement is translational moving lock latch in addition to the bolt in the same Lock case cross section very difficult to implement is. This applies all the more if additional lock functions - e.g. a lockable trap with enlarged exclusion - too are integrate.

It is therefore an object of the invention to improve the design specify with which the available Better space in the lock housing of such mortise locks is exploited to operate independently of each other Internal and external handles additional lock functions to enable.

The invention solves this problem with the features of Main claim.

The advantage of the invention is that the for the control of the inner nut or outer nut necessary mechanics alone filling the space between the forend and the one from there extends from measured backset up to 45 millimeters and at the same time the extension in the vertical direction between the Perforation for the locking cylinder, preferably the profile cylinder, and the handle axis is limited.

In this installation space inside the lock housing is the Coupling slide practically movable parallel to the faceplate and controls the clutch block depending on its position, the, if necessary depending on the position of the clutch slide, the outer nut actuated by the outside handle the trap couples or not.

In this way, practically everything remains above the Pusher axis available space for the latch and the control of the trap and possibly other functions Available, the optional subject of the present invention are. This includes in particular the inevitable activation a bolt spring-loaded in the extension direction with extending the trap into its locked position, the accommodation a bolt lock to prevent tampering To prevent the lock and possibly also the accommodation and control a trap lock to prevent manipulation to prevent outside.

The corresponding position of the coupling block, the this from the contact surface of the clutch slide is imprinted, the outer nut with the nut middle part coupled to actuate the trap or not.

Possibly. the coupling block can also be dimensioned so that it is also used to couple the inner nut to the nut middle part serves.

Another possibility is to use the inner nut over one Forced coupling of the nut mandrel to the middle part of the nut while the outer nut finally via the coupling block in twist connection is spent with the middle part of the nut.

Not only in terms of manufacturing costs, but also in terms of assembly safety, it is advantageous if the Outer nut and the inner nut made from identical raw parts and / or are identical components.

Advantageous embodiments result from the subclaims.

The invention is described below on the basis of exemplary embodiments explained in more detail.

Figur 1

ein Ausführungsbeispiel der Erfindung im ausgekuppelten Zustand in Blickrichtung von der Innenseite einer auswärts öffnenden Tür

Figur 2

ein Ausführungsbeispiel der Erfindung im eingekuppelten Zustand in Blickrichtung von der Außenseite einer einwärts öffnenden Tür

Figur 3

die Schloßnußmechanik mit Innennuß links

Figur 4

die Schloßnußmechanik in Ansicht von der Türinnenseite

Figur 5

die Schloßnußmechanik mit Innennuß rechts

Figur 6

die Schloßnußmechanik im Zusammenwirken mit der Kontaktfläche des Kupplungsschiebers in Ansicht von außen (Ausrückstellung)

Figur 7

die Schloßnußmechanik im Zusammenwirken mit der Kontaktfläche des Kupplungsschiebers in Ansicht von außen (Einrückstellung)

Figur 8

Blick auf die Außenseite der Tür mit funktionslosem Außendrücker im betätigten Zustand

Figur 9

das Ausführungsbeispiel gemäß Figur 8 mit betätigtem Innendrücker

Figur 10

Funktionsdarstellung gemäß Figur 9 bei weggelassenem Kupplungsschieber, Kupplungsstein und zugehöriger Federn

Figur 10 a

Zusammenwirken zwischen Kullissenstein des Nußmittenteils und Fallensperre

Figur 11

Ansicht von außen mit eingekuppeltem Kupplungsstein und wirksamem Außendrücker

Figur 12

Ansicht des Riegels von oben mit Aufschlagdämpfung durch O-Ring

Figur 13

Detailansicht des Kupplungssteins

Figur 14

Detailansicht des Nußmittenteils

Show it

Figure 1

an embodiment of the invention in the disengaged state in the direction of view from the inside of an outward opening door

Figure 2

an embodiment of the invention in the coupled state in the direction of view from the outside of an inward opening door

Figure 3

the lock nut mechanism with inner nut on the left

Figure 4

the lock nut mechanism in view from the inside of the door

Figure 5

the lock nut mechanism with inner nut on the right

Figure 6

the lock nut mechanism in cooperation with the contact surface of the clutch slide in a view from the outside (disengaged position)

Figure 7

the lock nut mechanism in cooperation with the contact surface of the clutch slide in a view from the outside (engagement position)

Figure 8

View of the outside of the door with the outside handle inoperative when actuated

Figure 9

the embodiment of Figure 8 with the inner handle actuated

Figure 10

Functional representation according to Figure 9 with omitted clutch slide, clutch block and associated springs

Figure 10 a

Interaction between the block nut of the middle part of the nut and the latch

Figure 11

View from the outside with the clutch block engaged and an effective outside handle

Figure 12

Top view of the bolt with impact damping through O-ring

Figure 13

Detailed view of the coupling block

Figure 14

Detailed view of the middle part of the nut

Unless otherwise stated below, the following applies Description always for all figures.

The figures show a mortise lock 1 with a backset 4 less than or equal to 45 mm.

Such a mortise lock 1 has a faceplate 2 with corresponding Perforations for the inside of the mortise lock 1 arranged latch 9 and bolt 10.

The housing of the mortise lock 1 is from the lock plate 3rd educated. The associated castle ceiling is for illustration left of the castle interior.

In this respect it is also known that a pusher axis 8 is used Inner handle 11 or outer handle 12 is arranged so that the lock nut mechanism is set in rotation by actuation of the handle is and thereby the trap 9 or - as here - with certain Lock types can also retract the bolt 10.

For this purpose, the trap 9 is usually under the Preload of a preload spring 44. This applies in the same way also for the automatically extendable bolt shown 10, which is here under the load of a preload spring 43.

To retract the spring-loaded catch 9 serves a lock nut mechanism, which via the inside handle 11 and Outside handle 12 can be activated or activated in a certain way becomes.

For this purpose, the lock nut mechanism consists of an external one Outer nut 5 for the outer handle 12, an inner one Inner socket 6 for the inside handle 11 and one between Outer nut 5 and inner nut 6 arranged nut middle part 7, which extends from the handle axis 8 to the latch 9 extending arm. The nut middle part 7 is depending Position of the clutch slide 13 and one of the clutch slide 13 in its respective disengagement or engagement position 17 acted upon coupling element in terms of rotation with the outside handle 12 engaged or disengaged.

In this respect it should be noted that there is a perforation in the lock plate 3 14 is provided for a lock cylinder which - in in a known manner - the clutch slider via its lock bit 13 between the disengaging position 16 and Can shift 17 engagement position.

It is now essential that the clutch slide 13 one below the pusher axis 8 has lying contact surface 15, which between the engagement position 17 and the disengagement position 16 of the clutch slide 13 one on the nut middle part 7 area overruns, and that in this area as a coupling element between the outer handle 12 and the nut middle part 7 a clutch block 18 is arranged. Here is the Coupling block 18 with an essential component in parallel for - here vertical - movement of the clutch slide 13 displaced.

The coupling block 18 protrudes laterally in the direction of the outer nut 5 beyond the nut middle part 7 and in the turning range a driver 19 of the outer nut 5, so that the coupling block 18 when the clutch slider 13 is in the engagement position 17 is located, the rotational movement of the outer nut 5 to be transmitted via the driver 19 to the nut middle part 7 is able.

To the clutch block 18 in its engagement position 17 hold, the contact surface 15 of the clutch slide 13, on which the coupling block 18 rests on the face, one to the handle axis 8 essentially concentric contour, on which with engaged position 17 of the clutch slide 13 the clutch block 18 within every possible Angle of rotation of the nut middle part 7 with the outer nut 5 in engagement permanently slipped.

In this way it can be achieved depending on the position of the clutch slide 13 of the outside lever 12 on the Outer nut 5 is either rotationally coupled to the nut middle part 7 or not.

In addition, the figures show a further development in which the clutch block 18 in the direction of the inner nut 6 also laterally beyond the nut middle part 7 also into the turning range a driver 20 of the inner nut 6 protrudes.

Thus, when the outside handle 12 is actuated, the inside handle is not necessarily also operated, is additional provided that the coupling block 18 for movement Decoupling of inner nut 6 and outer nut 5 in the opening the necessary direction of rotation 23 seen before this driver 20 is arranged.

In this way a "free running" is achieved in the nut middle part 7, so that when the external handle is engaged, if necessary 12 the inner nut 6, which is under the preload of its pressure retaining spring stands, does not have to be moved.

In the present case, it is additionally provided that both the inner nut 6 and the outer nut 5 each one own pusher spring is assigned.

This consists of a leg spring mounted above the trap, which is with a leg on a projection of the Lock plate 3 supports and with their other legs in Direction to the end of the lock plate facing away from face plate 2 3 points.

There is a tie rod that is practically immediate runs on the rear wall of the lock plate 3 and extends from the active spring legs up to a hook on the outer or inner nut extends so that when pivoting the respective Nut in the sense of a retraction movement of the trap the leg spring is tensioned and in the opposite direction the respective Pusher swung back.

The relocation of this tie rod to the rear area the mortise lock 1 creates additional space for the Installation of the trap 9, preferably with an increased stroke. hereupon is still being received.

To on the other hand also the outside handle 12 in terms of movement Decoupling the inner nut 6 and the nut middle part 7 is additionally proposed that the coupling block 18 on the side of the Outer nut 5 in the direction of rotation required to open the door 23 of the driver 19 the outer nut 5 seen in front of this driver 19 is arranged.

Both measures serve the purpose of opening each one the door handle not involved in its horizontal To remain in position, resulting in low lever actuation forces can be achieved and what especially with glazed doors is desirable.

In addition, FIG. 1 in particular shows that the inner nut 6 with the nut middle part 7 via an insertable nut mandrel 24 is rotatably coupled. The length of the nut mandrel 24 is dimensioned that he has a through hole of the inner nut 6 to the middle part of the nut 7 penetrated into it and there with its insertion end in a segment slot lying concentrically to the handle axis 8 29 of the nut middle part 7 is inserted, in which shown Embodiment of the segment slot 29 by arrangement and segment angle 30 is such that at the same time With pivoting of the nut middle part 7 of the latch 9, a stroke 31 of more than 11 mm is possible.

As the hub 31 here is that of the outer surface of the cuff 2 Top of the trap 9 in the extended position measured To understand the distance that is common with today's mortise locks is of the order of 11 mm.

However, the invention also makes traps 9 possible, whose stroke 31 can be increased to approximately 20 mm. Such an embodiment of the trap is e.g. from EP 0 431 369 known.

As a comparison of Figures 1 and 2 taking into account 3 to 5, each nut has 5,6 a stepped bore 25 on which the nut mandrel 24 for receiving serves. The nut mandrel 24 is a cylindrical pin with a negative contour corresponding to the contour of the stepped bore and a length that is practically up to that of the nut middle part 7 facing counter surface of the opposite nut 6.5 is sufficient. There is the nut mandrel 24 in a segment slot, so that the inner nut 6 in any case opposite the nut middle part 7 has free access.

In addition, Figures 3 to 5 show a mirror image designed partial nuts 5,6, of which only one coupled to the nut middle part 7 via the nut mandrel 24 is.

However, it is also possible to use the outer nut 5 and the inner nut 6 to manufacture from identical raw parts. Then it is special advantageous if the partial nuts 5.6 identical components are.

The partial nut coupled in this way is inevitably the inner nut, there this when the associated inside handle 11 is pressed Nut center part inevitably pivoted and in this way the latch 9 and possibly also the bolt 10 actuated.

There is a cutting disc between the two partial nuts 26 to insert the respective square drive to prevent from inside handle 11 or outside handle 12.

4 shows the arrangement of a guide slot 32 in the middle part of the nut, within which the clutch block 18 guided radially with respect to the handle axis 8 is.

For this purpose, the coupling block 18 has a corresponding to FIG constriction 32a running in its direction of movement, which engages around the edges of the guide slot 32 around the coupling block 18 to convey its inward and outward movement.

The clutch block 18 is under the influence of a Coil spring 34, which is between coupling block 18 and Nut center part 7 supports that the coupling block 18 in the direction applied to the contact surface 15 of the clutch slide 13 becomes.

In order to be able to guide the coil spring 34 exactly, the Coupling block 18 additionally has a blind bore 33, inside of which the coil spring 34 is guided.

In addition, the figures show the arrangement of a latch lock 35 immediately below the trap. It is essential that this latch lock 35 acts without spring force and via a Pairing of scenery track 39 and scenery stone 40 between Locked position 41 and release position 42 is shiftable.

The latch lock projects in its locked position 41 with a Locking projection 36 in front of a counter surface, which is on the Rear 38 of the trap head is located.

The trap is in its locked position 41 by the positive engagement between scenery track 39 and scenery stone 40 held as long as the nut middle part in the left End position according to Fig.2 stands.

The latch lock 35 is on its facing away from the trap 9 End mounted on the lock plate via an axis of rotation 37 and - here - equipped with the backdrop 39, within which the sliding block 40 rigidly connected to the nut middle part 7 running.

It can be seen that with pivoting of the nut middle part 7 clockwise the positive engagement between the sliding block 40 and backdrop 39 causes the trap lock 35 pivoted downwards. The lock projection gets in the process 36 so far below the rear 38 of the trap head, that this now with further pivoting of the nut middle part can be pulled in clockwise.

As a result of the gain in space that the invention within the Lock housing enables, further lock functions are provided.

For this purpose, the figures show a bolt 10, which in the extension direction here is acted upon by the preload spring 43 and which is held in the retracted state by a bolt trigger 45 becomes.

In this state, the preload spring 43 is maximally tensioned, while the latch release via a retaining projection 46, the engages in a retaining groove 47 of the bolt 10, the bolt in holding position.

For this purpose, the latch release 45 is under the preload a holding spring 48, which is supported against the lock plate 3 and the bolt release 45 in its the extension movement of the bolt 10 holds the locking position.

The bolt trigger 45 extends immediately adjacent behind the faceplate 2 up to the underside facing the perforation 14 the trap 9 and there has a release surface 49 on, if applicable, from a trap Trigger cam 50 is applied.

It can be seen that the trigger cam 50 on the inclined Trigger surface 49 can slide and the latch release 45 shifted against the preload of the holding spring 48.

The holding engagement between the holding projection 46 and Retaining groove 47 out of action, so that the spring preload standing bolt 10 can snap out.

To additionally prevent tampering with the lock when the Bolt 10 is extended, a bolt lock 54 is provided, the rotation of the nut middle part 7 in the sense of a Retraction movement of the trap 9 is inoperable.

For this purpose, FIG. 10 shows a fixed position on the lock plate 3 arranged bearing pin 56 for a return lever 55, the over a roller 57 is acted upon by the rotational movement of the nut middle part 7 becomes.

Via the shoulder mandrel 58 arranged in the bolt lock 54 can the two-armed return lever 55 the bolt lock 54th lift to their release position.

It should also be mentioned that the bolt lock 54 has a Leg spring 53, which is at its other end on the clutch slide 13 supports, biased towards the bolt 10 is.

In addition, for the sake of completeness, it should be mentioned that the clutch slide 13 at its end where the contact surface 15 is located in a C-shaped stroke limitation curve is performed in which is located on the lock plate 3 Pin is inserted.

In addition to this, Fig.12 shows how the one in Fig.10 is practical Fully illustrated return lever 55 indirectly via the Neck mandrel 58 acts on the bolt 10.

It is important that the bolt 10 under spring preload generates an impact sound when suddenly extending, which is effectively diminished here.

For this purpose, the extension of the bolt 10, which in the Inside the mortise lock 1 protrudes, the lock plate 3 penetrating mandrel on the inside of a longitudinal slot of the lock plate is guided.

In addition, a bead 59 is provided in the lock plate 3, the just behind the end of the longitudinal slot on the exit side sitting. There one strikes rigidly with the guide pin of the bolt 10 connected damping O-ring 60 just before the Guide mandrel comes to the end of the guide slot.

In this way, impact noise damping can be done with simple means of the bolt that pops out.

LIST OF REFERENCE NUMBERS

1

mortise lock

2

stulp

3

lock plate

4

backset

5

outer nut

6

inner nut

7

Nußmittenteil

8th

push button shaft

9

Cases

10

bars

11

inside handle

12

external handle

13

coupling slider

14

Perforation for locking cylinders

15

contact area

16

Disengaging position of the clutch slide

17

Engaging position of the clutch slide

18

clutch stone

19

Driver of the outer nut

20

Driver of the inner nut

23

Direction of rotation for opening the door

24

Nußdorn

25

stepped bore

26

separation disc

29

segment slot

30

segment angle

31

stroke

32

guide slot

32a

constriction

33

blind hole

34

coil spring

35

case lock

36

lock ledge

37

axis of rotation

38

Back of the trap head

39

link path

40

sliding block

41

Lock position of the latch lock

42

Release position of the trap lock

43

Preload spring, latch

44

Preload spring, trap

45

latch trigger

46

Retaining tab on the bolt release

47

Keep groove on the bolt

48

Sprung

49

Release surface of the bolt release

50

Trigger cams on the trap

51

Bearing pin for clutch slide

52

Hubbegrenzungskurve

53

Leg spring on the clutch slide

54

bolt lock

55

returning lever

56

bearing mandrel

57

role

58

approach Dorn

59

Beading

60

O-ring

Claims (13)

Mortise lock (1) with a backset (4) less than or equal to 45 mm, preferably for installation in tubular frame doors, with a three-part lock nut mechanism that can be rotated coaxially and in three planes to pull in a spring-loaded latch (9) in the extending direction, the lock nut mechanism being from an external one Outer nut (5) for an outer handle (12), an inner inner nut (6) for an inner handle (11) and an intermediate nut middle part (7), which depending on the position of a coupling slide (13) acted upon by the lock bit of an associated locking cylinder and one by Coupling slide (13) acted upon coupling element with the external lever 12 is engaged or disengaged, the coupling slide (13) having a contact surface (15) lying below the lever axis (8), which between the coupling position (17) and disengaging position (16) of the coupling slide (13) an area located on the nut middle part (7) runs over, and that
in this area as a coupling element, a coupling block (18) which can be displaced with an essential component parallel to the direction of movement of the coupling slide (13) and which projects laterally beyond the nut center part (7) into the rotary region of a driver (19) of the outer nut (5) and that Contact surface (15) of the clutch slide (13) has a contour which is essentially concentric with the handle axis (8), on which the clutch block (18) is at every rotation angle of the nut middle part (7) when the clutch slide (13) is engaged (17) the outer nut (5) slides permanently in engagement. Mortise lock according to claim 1, characterized in that the coupling block (18) extends laterally beyond the central nut part (7) and also into the rotating area of a driver (20) of the inner nut (6) and there for the decoupling of the inner nut (6) and outer nut (5 ) in the direction of rotation (23) required to open the door is arranged in front of this driver (20). Mortise lock according to claim 1 or 2, characterized in that the coupling block (18) on the side of the outer nut (5) for the movement decoupling of the inner nut (6) and outer nut (5) in the direction of rotation (23) of the driver (23) necessary for opening the door. 19) the outer nut (5) is arranged in front of this driver (19). Mortise lock according to one of Claims 1 to 3, characterized in that the inner nut (6) can be rotatably coupled to the nut middle part (7) by means of an insertable nut mandrel (24) which, with its mortise end, lies in a segment slot (29) which is concentric to the handle axis (8). of the nut middle part (7) is inserted, the segment slot (29) according to the arrangement and segment angle (30) being dimensioned such that with simultaneous pivoting of the nut middle part (7) the latch (9) a stroke (31) of more than 11 millimeters is possible , Mortise lock according to claim 4, characterized in that the segment slot (29) is dimensioned such that the latch (9) a stroke (31) is possible up to about 20 millimeters. Mortise lock according to claims 1 to 5, characterized in that the outer nut (5) and inner nut (6) are made from identical raw parts. Mortise lock according to one of claims 1 to 6, characterized in that the outer nut (5) and inner nut (6) are identical components. Mortise lock according to one of claims 1 to 7, characterized in that the coupling block (18) is guided in a guide slot (32) of the nut middle part (7) lying radially to the handle axis (8) and in the direction of the contact surface (15) of the coupling slide (13) is spring loaded. Mortise lock according to claim 8, characterized in that the coupling block (18) has a blind bore (33) facing the guide slot (32), which serves as a guide for a helical spring (34), the other end of which is supported on the nut middle part (7). Mortise lock according to one of claims 1 to 9, characterized in that an unsprung loaded latch lock (35) is arranged below the latch (9), which is in a locked position by means of a pair of link track (39) and link block (40) from the nut center part (7) (41) or release position (42) is pivoted. Mortise lock according to one of Claims 1 to 10, characterized in that a bolt (10) is provided which is under spring preload (43) in the extension direction and is held in the retracted state by a bolt trigger (45) which is held by the extending latch (9) is so displaceable that the bolt trigger (45) comes into the release position. Mortise lock according to one of Claims 1 to 11, characterized in that the extended bolt (10) is engaged behind by a bolt lock (54) which, when the nut middle part (7) rotates in the retracting direction of the latch (9), can be deactivated. Mortise lock according to one of claims 1 to 12, characterized in that both the inner nut (6) and the outer nut (5) are each associated with their own handle retaining spring.

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