EP0854261B1 - Automatically releasing lock - Google Patents

Abstract

A self-locking lock with a bolt, a lock swing catch and an auxiliary swing catch, in which the bolt and lock swing catch move out in a locking position in spring-loaded manner with the door closed and move out in a locking position are lockable by a slide plate, while the auxiliary swing catch pressed on a locking plate and in which the bolt, with the door open, is held back in the lock housing and is arrestable by the auxiliary swing catch by means of the slide plate. In order to provide a lock secure against manipulation and reliable in operation, where an uncontrollable extension of the bolt is particularly effectively prevented even in intermediate states of the opening and closing process, on opening the bolt leads compared with the lock swing catch and is arrestable completely retracted in the lock and the lock swing catch is provided with a widening, e.g., with a pivotable, springloaded swing catch part. As a result the lock swing catch engages longer on the locking plate and lags behind the auxiliary swing catch, so that the slide plate and bolt are arrested until the auxiliary swing catch arrests the slide plate and bolt. The lock swing catch widening has no effect on closing.

Description

The invention relates to a self-locking lock according to the preamble of claim 1.

DE 44 07 244 C1 is a self-locking lock with a change, one by a spring in the closed position movable latch, a latch and an auxiliary latch known in which the over a split follower or a lock cylinder operated latch via a catch, which can be triggered via the auxiliary trap in the open position can be locked. An automatic extension of the latch when the door leaf is open, this prevents a from the trap controlled, second swivel lever for blocking the auxiliary trap provided and the auxiliary trap in the extended position is blocked by the swivel lever, if the trap is also extended.

Although this lock has proven itself in practice, in the worst case it can happen that in intermediate states the latch extends, but not into the opening of the shooting plate. This can e.g. with an uncontrolled Close and strong door seals the door spring back. Not completely excluded are also disruptions when at a legitimate Doors open from the outside of the lever handles not completely Opening of the door remains depressed and the Bolt pre-closes again without snapping into the striking plate to be able to.

In the case of a self-locking device described in EP 0 668 425 A1 Door lock is a bolt in a guide setting guided a push rod, the push rod linear is displaceable against the force of a biasing spring and the bolt is drawn into the lock. A lock, which e.g. one arranged on the push rod Has a locking rod and a tiltable locking plate, attacks the push rod in such a way that the bolt in each Retreat position can be locked. With the help of one the locking device protruding from the door lock is the locking mechanism releasable, the bolt under the action of the bias spring, which acts on the push rod can exclude.

This known lock is intended in particular for burglar-resistant locks with several locked bolts.
The linear push rod movement is used as a particularly simple transmission for the secondary locks. It is considered a disadvantage of this lock that the bolt can be locked in the end section of its retraction movement in any retracted position, so that the bolt is not fully retracted into the lock case and a door can only be opened with a correspondingly wide air gap between frame and door.

The invention has for its object to provide a tamper and reliable self-locking lock, in which an uncontrolled extension of the bolt is particularly effective and prevented in a structurally extremely efficient manner in each phase of the opening and closing process.

According to the invention the object is achieved by the features of the claim 1 solved. Practical and advantageous training are in the dependent claims and in the description of the figures contain.

A basic idea of the invention is the mechanics a lock for the interaction of bolts, lock latch and training auxiliary or control trap such that the Bolt "leading" towards the lock latch when opened is adjustable. The bolt is always fully in the lock withdrawn and in the fully withdrawn state locked. A slide plate, which is spring biased is and the bolt and the lock latch in excluded Locked position against pushing back into the lock and with the door open, the bolt on the auxiliary latch, which blocked a locking lever, holds it back in the lock and such prevents the latch from being triggered unintentionally linear, preferably adjustable in the vertical direction and has a backdrop for example 90 ° deflected adjustment of a locking bolt.

In addition, the slide plate is designed such that this from a latch bushing arranged on the lock latch or roller is held when the lock latch when Opening the door in a so-called intermediate state on the Front of the counterpart or striking plate slides. By doing the slide plate held by the role of the lock latch the latch will be retracted in its Position kept safe and trouble-free.

According to the invention, the slide plate is locked by the role of the lock latch in an intermediate state when opening the door and a tamperproof and reliable Retention of the bolt in this intermediate state through a defined design of the lock latch and arrangement achieved in relation to the auxiliary or tax trap.

According to the invention, a lock latch is used, which a widening in a predeterminable intermediate state having. The broadening can e.g. through a multi-part, in particular a two-part training become. The lock latch preferably has at least one Case part, which is adjustable and counteracted in this way is arranged on the lock latch that this in the unloaded Condition and when viewed from the face plate, wider is when opening in a widening the lock latch Position is held and therefore longer on the Strike plate is present.

When opening the door, for example by pressing a Handle from the inside of the door, with authorized access by pressing the button from the outside or with authorized access with a key by actuation a profile cylinder, can by the invention Formation of the lock latch if the door is only slightly opened and the lever handle is released, the lock latch due to their width only up to the surface of the Exclude counterpart or striking plate. This will the slide plate of the on the lock latch in a predetermined Positioned roller held, whereby the Bolt is held back in the castle. An uncontrolled Exclude the bolt is by in this position locked slide plate not possible.

If the door is opened further, the auxiliary latch arrives up to the counterpart, creating one on the slide plate provided in the area of the auxiliary trap in engagement with the auxiliary trap arrives, so that the entire slide plate further prevented from moving vertically downwards becomes. In this way, the bolt stays in the lock withdrawn position. When the door is opened further then the lock latch also extended. Since the auxiliary trap, e.g. is blocked by a locking lever, the Latches are in no way triggered unintentionally.

When the door is closed, the lock latch comes first the pivoting latch part to an edge of the striking plate. The trap part is counter-loaded in this way, e.g. by a leg spring that it is pushed back into the lock latch or is pivoted. Then the Auxiliary trap, which expediently the same bevel or has a wedge-shaped design like the lock latch and the trap member, engaging the edge of the Striking plate and releases the slide plate via a locking lever from the rest position. Via a control curve on the But slide plate comes into engagement with the Role of the lock latch and is thereby on a vertical Readjustment prevented until the lock latch fits into the corresponding Can pre-open the striking plate. Only then can the slide plate be adjusted and the Latch over the scenery guide and a guided in it Lock the locking pin so that the home position is closed Door with bolt and bolt excluded Lock latch as well as pressed on the striking plate Aid or tax trap is reached.

A particularly advantageous trained and with the auxiliary trap and the latch plate cooperating with the slide plate with widening is further in the description of the figures explained.

The slide plate is at least in regions on an inner surface of the castle cuff. In the area of the auxiliary trap the slide plate has an elongated hole guide, in which is a housing-side bolt for the locking lever the auxiliary trap is arranged. The slide plate is guided in a recess of the auxiliary trap and over a Locking nose lockable on this. In the area of the lock latch and the latch bushing arranged on the lock latch or roller is the slide plate with a preferably arcuate recess in which the role is included when bolt and lock latch for opening the door withdrawn, i.e. are accommodated in the lock housing.

The lock latch can be adjusted using a latch lever and a lever linkage known per se, which directly or indirectly also in operative connection with the slide plate stands and this in the vertical direction against the force of one Tension spring adjusted, done.

The self-locking lock is also over one Keys and a cylinder block and a change to to open. The cylinder beard comes e.g. with a shape the slide plate for actuating the bolt and with a Change in engagement, which the latch in the lock housing withdraws.

The main advantages of the lock according to the invention are extremely high security against manipulation and malfunctions in critical intermediate positions or handling and at the same time a particularly efficient and space-saving Mechanics when ensuring an insurance law relevant bolt exclusion for self-locking Castles.

Fig. 1 bis 6

jeweils einen Querschnitt durch ein erfindungsgemäßes Schloß bei unterschiedlichen Phasen der Schloßbetätigung;

Fig. 7

einen Querschnitt durch ein erfindungsgemäßes Schloß gemäß Fig. 1 bis 6 in einem Zwischenzustand beim Öffnen oder Schließen einer Tür;

Fig. 8.1 bis 8.3

eine Draufsicht auf ein Schloß gemäß Figur 7 mit erfindungsgemäß ausgebildeter Schloßfalle und Hilfsfalle beim öffnen einer Tür;

Fig. 9.1 bis 9.3

eine Draufsicht auf ein Schloß gemäß Fig. 7 mit erfinderungsgemäß ausgebildeter Schloßfalle und Hilfsfalle beim Schließen einer Tür;

Fig. 10

eine Ansicht einer erfindungsgemäß ausgebildeten Schloßfalle; und

Fig. 11

eine Draufsicht auf eine erfindungsgemäße Schloßfalle gemäß Figur 10.

The invention is explained below with reference to a drawing; in this show

1 to 6

each a cross section through a lock according to the invention in different phases of the lock actuation;

Fig. 7

a cross section through an inventive lock according to Figures 1 to 6 in an intermediate state when opening or closing a door.

Fig. 8.1 to 8.3

a plan view of a lock according to Figure 7 with inventive lock latch and auxiliary latch when opening a door;

Fig. 9.1 to 9.3

7 shows a top view of a lock according to FIG. 7 with a lock latch and auxiliary latch when closing a door;

Fig. 10

a view of a lock latch designed according to the invention; and

Fig. 11

a plan view of a lock latch according to the invention according to Figure 10.

A lock according to Figures 1 to 7 has a lock faceplate 2 and a housing 3 in which a bolt 4, a lock latch 5 and an auxiliary or control latch 6 adjustable are arranged. The castle is divided into two Inside / outside handle follower 7 and a key operated Lock cylinder 8 can be actuated with a locking lug 9.

The bolt 4 is designed such that an insurance law relevant exclusion length of 20 mm is. The bolt 4 is with a recess 11 in one Latch bolt 10 performed when an adjustment of the withdrawn to the excluded position and vice versa is carried out. This adjustment is done with Using a slide plate 12, which from the lower edge of the housing 13 to over the auxiliary trap 6 and against one Tension spring 14 is linearly adjustable in the vertical direction. About the locking bolt 10, which is in a backdrop Guide 15 of the slide plate 12 is performed at a vertical adjustment of the slide plate a horizontal Bolt adjustment.

In Fig. 1 the lock is in with the door closed a basic position "door closed", in which the bolt 4 and the lock latch 5 arranged above each in Openings 17 of the striking plate 16 of the door frame pre-closed are. The auxiliary trap 6, which is above the Lock latch 5 is arranged, is pushed back and presses on the striking plate 16.

The slide plate 12 is in the area of the auxiliary trap 6 a vertical slot opening 18 and is in a recess 37 of the auxiliary trap 6, wherein in the Slot opening 18 a bolt 19 is mounted. The bolt 19 forms the pivot axis for a locking lever 20, which is formed almost at right angles and with an upper Lever arm 21 for locking the auxiliary latch 6 and with a lower lever arm 22 in operative connection with the lock latch 5 is feasible. The slide plate 12 has in the area of Lock latch 5 has a recess 38 which has a Bevel 23 in an almost vertical control edge 24 passes, which e.g. in the basic position according to FIG. 1 on a roller or a case bush 25 of the lock case 5 is present and the lock latch in the locked state locked. The locking of bolt 4 is on the backdrop guide 15, which is approximately at an angle of 45 ° Vertical runs, made. The locking bolt 10 is then held in an end position.

When the door lock is operated using the follower 7 is a transport lever 29 via a known, Mechanism not shown pivoted. The transport lever 29 is connected to the slide plate 12 and adjusted this in the vertical direction. Both the lock latch 5 and the auxiliary trap 6 are in the direction of the excluded Spring-loaded position. The lock latch 5 is via a latch lever 30 which is around a housing side Bolt 35 is pivotally mounted (see Fig. 2nd and 5), when actuating the follower 7 via the mechanics (not shown) adjusted.

In Figure 2, the lock is actuated from the inside, i.e. shown in a panic function. Identical characteristics are provided with identical reference symbols. Components which contribute nothing to the understanding of the invention omitted. This also applies to the other figures.

When the follower 7 is actuated by a lever handle inside and rotation by about 35 °, the bolt 4 and the Lock latch 5 withdrawn, the bolt 4 of the lock latch 5 advanced. The adjustment of bolt 4 and lock latch 5 takes place via the mechanics not shown and the Transport lever 29 and the slide plate 12 and the Latch lever 30. The door can then be opened. If the Door is not opened and the lever handle is released, so close bolt 4 and lock latch 5 again and close the door (see Fig. 1).

Figure 3 shows the lock with the door open, in which the auxiliary trap 6 and the lock trap 5 from the lock faceplate 2 protrude and the bolt 4 held in the lock and is secured against unintentional triggering. This backup takes place through the auxiliary trap 6, which through the upper Lever arm 21 of the locking lever 20 is blocked and over a latch 31 locks the slide plate. By a Relative movement of the lock latch 5 and the auxiliary latch 6 is the auxiliary latch 6 unlocked via the locking lever 20 and the Bolt 4 can due to the slider plate adjusted downwards 12 spring-loaded and self-locking when closing the door close.

Figure 4 shows an actuation from the outside when closed Door. Since there is no authorized access, is the door handle or the follower outside 7 in Freewheel function. The lever handle on the outside can then Be depressed 35 ° and run empty. The latch 4 and the lock latch 5 are not in the freewheel function moves and the lock remains locked.

Figure 5 shows the lock when actuated from the outside with authorized access, for example with an access control system. In this case, for example Door handle or the handle follower 7 electrically by a Solenoids can be coupled with the door handle on the inside (not shown). Through the coupling, the bolt 4 and the lock latch 5 on the panic side by turning the Door handle withdrawn into the outside of the lock (see Fig. 2). The door can be opened.

In Figure 6 is an actuation of the lock with a key-operated locking system 8 shown. Go berserk the locking system 8 with the locking lug 9 becomes the bolt 4 via the slide plate 12 and the lock latch 5 via a Change 36 withdrawn into the lock housing. The door can then be opened.

FIG. 7 shows an intermediate status of the lock according to FIG. 1 to 6 when opening and closing a door, this one Intermediate state over that shown in Figures 8 to 11 Lock latch 5 with widening 40 and with a roller 25 and the defined arrangement of the lock latch 5 relative to Auxiliary trap 6 and the slide plate 12 is reached. The Lock latch 5 slides on the front of the striking plate 16. The slide plate 12 is from the roller 25 Lock latch 5 held and at the same time holds the bolt 4 in the retracted position. An accidental advance the bolt 4 is not possible.

Figures 8.1 to 8.3 show a plan view of a 7 closed a process when opening a door in Area of the lock latch 5 with widening 40 and one Auxiliary trap 6. An arrow A indicates the opening direction Door on. Bolt 4 and lock latch 5 are as related described with Figures 2, 5 or 6, withdrawn. The door is opened a little and the lever handle is opened again released, the lock latch 5 due to the widening 40 only down to the surface of the striking plate Exclude 16 (Fig.8.1). The slide plate 12 on the bevel 23 from the roller 25 of the lock latch 5 held and the bolt 4 remains in the retracted Position in the lock back (Fig. 7). The door continues opened (Fig. 8.2), the auxiliary trap 6 moves first and catches the slide plate 12 and thereby also the bolt 4 (see Fig. 3). Then the lock latch 5 also moves forward (Fig. 8.3) and the state as in Figure 3 is given. The Advance of the auxiliary trap 6 in front of the lock trap 5 or its Caster over the auxiliary trap 6 is defined by the Training the lock latch 5 with a spring-loaded Trap part 40 as a widening (see also Figure 10 and 11).

When closing a door (see Fig. 9.1 to 9.3 with Lock direction according to arrow B), the lock latch 5 with Widening 40 initially by an edge of a striking plate 16 pushed back, this from the door gap, which approx. 4 to 1 mm, depending on (Fig.9.1). 9.1 and 9.2 illustrate that the widening 40 is not effective since it is pivoted and by the Castle latch 5 is added. Then the auxiliary trap releases 6, which also abuts the edge of the striking plate 16 (Fig. 9.2), the slide plate 12. The slide plate However, 12 is still held back by the roller 25 (Fig. 7) until the lock latch 5 in the striking plate 16 can close (see Fig. 9.3). Then the Close latch 5. It is then according to the closed state Figure 1 reached.

The lock latch 5 according to Figures 8 and 9 is in the figures 10 and 11 enlarged and shown without an auxiliary trap. The lock latch 5 consists of a base body 39 and has a pivotable latch part 40 for widening, which is counter-loaded so that when closing and Press on a striking plate 16 (see Fig. 9.1) pivoted and is received by the base body 39. Remains when opening the spring-loaded latch part 40 in the base body 39 widening position (see Fig. 8.1 to 8.3) and ensures longer contact with the striking plate 16 and the interaction of the roller 25 with the slide plate 12 (see Fig. 7).

The case part 40 is in the present embodiment arranged and widened pivotably about a vertical axis 41 with a protruding area 42 which over a wedge surface 43 of the base body 39 protrudes Lock latch 5 faceplate. The lock latch 5 points in Transition between an exclusive trap area 44 and a latch area 45 guided in the lock housing 3, which with a spring receptacle 46 for a compression spring 48 (see e.g. Fig. 1) is provided, the roller or trap bush 25 on. On this roller 25, the slide plate 12 with its control edge 24 (FIG. 1) or bevel 23 (Fig. 7) held for vertical adjustment of the slide plate 12 and unwanted locking of the latch 4 to prevent in any case and malfunctions and damage to avoid at the castle.

The pivotable latch part 40 is in cross section as one isosceles triangle with rounded corners and by a leg spring mounted on the cylinder pin 41 49 acted upon. The case part 40 is in the unloaded State and with one acting on a base 47 Load due to the action of the leg spring 49 over the wedge surface 43 and widen the lock latch 5 to to reach their lead in front of the auxiliary trap 6 when closing (Fig. 9.1 to 9.3). When opening, a forward run of Auxiliary trap 6 in front of the lock trap 5 such that the widened Lock latch 5 longer than the auxiliary latch 6 on the Strike plate 16 abuts, achieved by the latch part 40 by the leg spring 49 protruding and non-pivotable is held.

The trap part 40 is approximately in the center in the longitudinal direction arranged in the base body and is pivoted around the Dowel pin 41, which in a to the base 47th neighboring corner area is led completely from Base body 39 added. The base 47 is aligned then with an upper and lower portion of the wedge surface 43 of the front, exclusive trap area 44.

Claims (12)

1. Self-locking lock with a bolt (4), a lock swing catch (5), an auxiliary swing catch (6), and a slide plate (12),
   in which the bolt (4) and the lock swing catch (5) move out into a locking position in springloaded manner and are locked with the door closed and when moved out in a locking position, and in which the bolt (4) in case of an open door and in completely retracted position is arrested by the auxiliary swing catch (6) via the slide plate (12), wherein by pressing in the auxiliary swing catch (6) on closing the door, the arresting of the bolt (4) is cancelled and the bolt moves out in locking position,
   characterized in that,

   on opening the door the bolt (4) leads compared with the lock swing catch (5),

   the lock swing catch (5) is provided with a swig catch part (40) and consequently lags behind the auxiliary swing catch (6), so that the slide plate (12) and bolt (4) are arrested by the lock swing catch (5) until the auxiliary swing catch (6) arrests the slide plate (12), and consequently the bolt (4), and

   the swing catch part (40) is received on closure in the lock swing catch (5), and

   the lock swing catch (5) when moved out in its locking position is locked by the slide plate.
2. Lock according to claim 1,
   characterized in that,
   the lock swing catch (5) has a stop element, particularly a roller or catch bushing (25) cooperating with the slide plate (12) and on which the slide plate (12) can be arrested with predetermined control areas (23, 24) if, on opening the door, the lock swing catch is held by the swing catch part (40) in an intermediate state (40).
3. Lock according to claim 1,
   characterized in that,
   the lock spring catch (5) has a bipartite construction and has a main body (39) and a swing catch part (40) arranged pivotably on said main body.
4. Lock according to claim 3,
   characterized in that,
   the main body (39) of the lock swing catch (5) has a swing catch area (44) which can be moved out in a locking position from the lock housing (3), and a swing catch area (45) guided in the lock housing (3), and that the roller (25) provided for arresting the slide plate (12) is positioned in the transition between the swing catch areas (44) and (45).
5. Lock according to claim 4,
   characterized in that,
   the swing catch part (40), in the longitudinal direction, is positioned roughly centrally in the swing catch area (44) of the main body (39) in which the lock swing catch can be moved out in a locking position, and is pivotable about a vertical axis (41) counter to the tension of a spring (48), and that the swing catch part (40) pivots on closing and pressing on a locking plate (16) and is received by the main body (39), whilst on opening it remains in the position widening the lock swing catch (5) and ensures an engagement of the slide plate (12) on the roller (25) of the lock swing catch (5).
6. Lock according to claim 5,
   characterized in that,
   the swing catch part (40), which is cross-sectionally constructed as an isosceles triangle with rounded angles, is biased by a spring clip (49), which is mounted on a cylinder pin (41) forming a pivot pin, and that the swing catch part (40) in the unloaded state and with a loading acting on a base surface (47) by the tension of the spring clip (49) projects over a wedge surface (43) of the swing catch area (44) in which the lock swing catch can be moved out in a locking position and widens the lock swing catch (5).
7. Lock according to claim 5 or 6,
   characterized in that,
   on opening the auxiliary swing catch (6) leads compared with the lock swing catch (5), so that the latter is widened as a result of the projecting and unpivotably held swing catch part (40) and engages on the locking plate (16), the bolt (4) remaining in the retracted position in the lock, in that the slide plate (12) is arrested on a bevel (23) of the roller (25) of the lock swing catch (5) engaging on the locking plate (16), and that up to the moving forwards in a locking position of the lock swing catch (5) in the locking plate (16) the auxiliary swing catch (6) keeps the slide plate (12) in an arrested position.
8. Lock according to one of the preceding claims 5 to 7,
   characterized in that,
   in that the swing catch part (40) of the swing catch (5) on closing the door and engaging on the locking plate (16) pivots and is received by the lock swing catch (5), that the auxiliary swing catch (6) engaging after the lock swing catch (5) on the counterpart (16), releases the slide plate (12) from a stop position , and that the slide plate (12) is arrested by the roller (25) of the lock swing catch (5) and is vertically adjustable when the lock swing catch (5) moves forward in a locking position in the locking plate (16).
9. Lock according to one of the preceding claims,
   characterized in that,
   the bolt (4) is adjustable by means of a link-like guide (15) from a position completely retracted into the lock housing (3) into a moved forward locking position, and that the slide plate (12) which extends almost from a lower housing edge (13) to above the auxiliary catch (6) is arranged on the lock plate side and is guided in a recess (37) of the auxiliary swing catch (6), and in the vicinity of the lock swing catch (5) are provided a recess (38) and a bevel (23) as well as a control edge (24) virtually vertical, which can be engaged with the roller (25) of the lock swing catch (5).
10. Lock according to one of the preceding claims,
    characterized in that,
    the lock swing catch (5) is adjustable by means of a catch lever (30) by a couplable inner/outer latch nut (7) and a mechanism as well as by a key-operable lock cylinder (8) and a changer (36), the mechanism, by means of a transport lever (29) permitting the adjustment of the slide plate (12) and with it the bolt (4).
11. Lock according to one of the preceding claims,
    characterized in that,
    with the door opened, where the auxiliary swing catch (6) and the lock swing catch (5) project from the lock housing (3), and the bolt (4) is completely retracted into the lock housing (3), the bolt (4) is secured against unintentional release by the auxiliary swing catch (6), the auxiliary swing catch (6) being blocked by a catch lever (20) and the slide plate (12) being arrested on a detent (31).
12. Lock according to claim 11,
    characterized in that,
    by a relative movement of the lock swing catch (5) and auxiliary swing catch (6), the auxiliary swing catch (6) is unlocked and the bolt (4) in a self-locking manner moves forward into a locking position by means of a spring-biased adjusted slide plate (12).

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