EP0854261A1 - 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 well-known lock is especially for burglar-resistant Locks provided with several locked bolts. The linear push rod movement is considered to be particularly simple Transmission used for the secondary locks. As a disadvantage is considered in this castle that the bolt in End portion of its retraction movement in any retreat position can be locked so that the bolt is not completely is withdrawn into the lock case and only a door a correspondingly wide air gap between the frame and Door can be opened.

The invention has for its object to provide a tamper-proof 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 every 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 to design the mechanics of a lock for the interaction of bolt, lock latch and auxiliary or control latch in such a way that the bolt can be "advanced" to the lock latch when it is opened. The bolt is always fully retracted into the lock and locked in the fully retracted state. A slide plate which is resiliently biased and locks the bolt and the lock latch in the locked position against being pushed back into the lock and, when the door is open, holds the bolt in the lock via the auxiliary latch, which blocks a locking lever, thus preventing the bolt from being released unintentionally. is linear, preferably arranged adjustable in the vertical direction and has a guide linkage for example, 90 ^o deflected displacement of a locking bolt on.

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 tamper-proof 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 Preferably, the lock latch 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 provided in the region of the auxiliary latch 6 with a vertical elongated hole opening 18 and is guided in a recess 37 of the auxiliary latch 6, a bolt 19 being mounted in the elongated hole opening 18. The bolt 19 forms the pivot axis for a locking lever 20, which is formed almost at right angles and can be brought into operative connection with the lock latch 5 with an upper lever arm 21 for locking the auxiliary latch 6 and with a lower lever arm 22. The slide plate 12 has a recess 38 in the area of the lock latch 5, which merges via a bevel 23 into an almost vertical control edge 24 which, for example in the basic position according to FIG. 1, rests on a roller or a latch bushing 25 of the lock latch 5 and the lock latch locked in the locked state. The locking of the bolt 4 is carried out via the link guide 15, which extends approximately at an angle of 45 ^o to the vertical. 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.

Upon actuation of the presser nut 7 by a door handle on the inside and rotation by approximately 35 ^° the latch 4 and the lock latch 5 will be retracted, the latch 4 is advanced to the lock latch. 5 The bolt 4 and lock latch 5 are adjusted via the mechanism (not shown) and the transport lever 29 and the slide plate 12 or the latch lever 30. The door can then be opened. If the door is not opened and the lever handle is released, bolt 4 and lock latch 5 lock again and lock 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 with the door closed. Since there is no authorized access, the lever handle or the follower nut 7 is in the freewheeling function. The lever handle on the outside can then be depressed to approx. 35 ^o and run empty. The bolt 4 and the lock latch 5 are not moved during the freewheeling function and the lock thus 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, whereby this 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. Of 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), 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)

Self-locking lock with a bolt (4), a lock latch (5), an auxiliary latch (6) and a slide plate (12),
in which the bolt (4) and the lock latch (5) are spring-loaded and locked when the door is closed and in the locked position, and and in which the bolt (4) with the door open and in the fully retracted position by the auxiliary latch (6) via the The slide plate (12) is locked, the locking of the bolt (4) being released and the bolt being excluded by pressing in the auxiliary latch (6) when the door is closed,
characterized by that the bolt (4) leads over the lock latch (5) when the door is opened, that the lock latch (5) is provided with a latch part (40) and thereby the auxiliary latch (6) lags behind, so that the slide plate (12) and the bolt (4) are locked by the lock latch (5) until the auxiliary latch (6) the slide plate (12) and thereby the bolt (4) locked, and that the latch part (40) is received when closing in the lock latch (5), and that the lock latch (5) is locked in its locked position by the slide plate. Lock according to claim 1,
characterized by that the lock latch (5) has a stop element cooperating with the slide plate (12), in particular a roller or latch bush (25), on which the slide plate (12) can be locked with predetermined control areas (23, 24) when the lock latch opens the door is held in an intermediate state (40) by the latch part (40). Lock according to claim 1,
characterized by that the lock latch (5) is formed in two parts and has a base body (39) and the latch part (40) which is pivotally arranged on the base body. Lock according to claim 3,
characterized by that the base body (39) of the lock latch (5) has a latch area (44) that can be excluded from the lock housing (3) and a latch area (45) guided in the lock housing (3) and that the roller (25), which is used to lock the slide plate ( 12) is provided, is arranged in the transition between the trap areas (44) and (45). Lock according to claim 4,
characterized by that the latch part (40) is arranged approximately centrally in the longitudinal direction in the lockable latch area (44) of the base body (39) and can be pivoted about a vertical axis (41) against the force of a spring (48) and that the latch part (40) when closing and Pressing on a striking plate (16) is pivoted and received by the base body (39), while it remains in the widening position when the lock latch (5) is opened and the slide plate (12) rests on the roller (25) of the lock latch (5) guaranteed. Lock according to claim 5,
characterized by that the latch part (40), which is formed in cross section as an isosceles triangle with rounded corners, is acted upon by a leg spring (49) which is mounted on a cylindrical pin (41) forming the pivot axis, and that the latch part (40) in unloaded state and in the case of a load acting on a base area (47) by the force of the leg spring (49) projecting over a wedge surface (43) of the lockable latch area (44) and widening the lock latch (5). Lock according to claim 5 or 6,
characterized by that when opening the auxiliary latch (6) is provided in front of the lock latch (5), such that the lock latch is widened due to the projecting and non-pivoting latch part (40) and rests on the striking plate (16), the bolt (4 ) remains in the retracted position in the lock by locking the slide plate (12) on a bevel (23) from the roller (25) of the lock latch (5) resting on the striking plate (16), and until the lock latch (5 ) in the striking plate (16) the auxiliary latch (6) holds the slide plate (12) in a locked position. Lock according to one of the preceding claims 5 to 7,
characterized by that the latch part (40) of the lock latch (5) is pivoted when the door is closed and after contact with the striking plate (16) and is received by the lock latch (5), that the auxiliary latch (6), which after the lock latch (5) the counterpart (16) rests, the slide plate (12) releases from a locking position and that the slide plate (12) is locked by the roller (25) of the lock latch (5) and is vertically adjustable when the lock latch (5) in the striking plate (16) precedes. Lock according to one of the preceding claims,
characterized by that the bolt (4) is adjustable via a link-like guide (15) from a fully retracted position in the lock housing (3) into a closing position and that the slide plate (12), which is almost from a lower housing edge (13) to over the Auxiliary latch (6) is sufficient, arranged on the faceplate and guided in a recess (37) of the auxiliary latch (6), a recess (38) and a bevel (23) and an almost vertical control edge (24) in the area of the lock latch (5) are provided which can be brought into engagement with the roller (25) of the lock latch (5). Lock according to one of the preceding claims,
characterized by that the lock latch (5) is adjustable via a latch lever (30) by means of a detachable inside / outside follower (7) and mechanism, as well as by a key-operated lock cylinder (8) and a change (36), the mechanism being adjustable via a transport lever ( 29) the slide plate (12) and with this the latch (4) is adjustable. Lock according to one of the preceding claims,
characterized by that when the door is open, in which the auxiliary latch (6) and the lock latch (5) protrude from the lock housing (3) and the bolt (4) in the lock housing (3) is completely retracted, securing the bolt (4) against unintentional Triggering by the auxiliary latch (6) is provided, the auxiliary latch (6) being blocked by a locking lever (20) and the slide plate (12) being locked on a latching lug (31). Lock according to claim 11,
characterized by that by a relative movement of the lock latch (5) and the auxiliary latch (6) unlocks the auxiliary latch (6) and the latch (4) over the spring-loaded and adjusted sliding plate (12) self-locking.

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