EP0924369A1 - Door fitting - Google Patents

Abstract

A door mounting for a closure mechanism of a door (2), wherein the door mounting exhibits a locking means (11), which locking means (11) blocks a locking mechanism (29, 36) in a locking position, wherein the locking mechanism (20, 36) is mechanically coupled to the closure mechanism (2) and thus an actuation of the closure mechanism is not possible, if the locking means (11) is disposed in the locking position. The locking means (11) can be moved into an unlocked position with the aid of an adjustment mechanism (10, 50), wherein a support mechanism (15, 16) retains the locking means (11) in the region of the unlocked position and releases an actuation of the closure mechanism of the door (2).

Description

The present invention relates to a door fitting for a locking mechanism Door. In particular, the present invention relates to an electrical door fitting for the installation on entrance doors with locking systems, for example with the help of a Profile cylinder can be locked and unlocked.

It is already known to provide door fittings for locking locking systems Use entrance doors. In this regard, in particular, various ones are electrical Locking door fittings for mounting on front doors known with the help of a electromagnetic clutch locks and locks the entrance door unlock to prevent unauthorized access through the front door. This However, known door fittings have in common that both the electronics and the Mechanism of the electrically locking and unlocking door fitting is very complicated and has a variety of items. This is not just the manufacturing cost the door fitting is high, but the door fitting is also only with a relatively high Assemble and assemble effort.

In this regard, for example from DE 35 37 785 A1 a door fitting with the Features of the preamble of claim 1 known. The door fitting includes one Locking mechanism, the locking mechanism by a corresponding Code entry can be unlocked using a card or keyboard. At The presence of a corresponding adjustment signal is an anchor using a Electromagnets and a permanent magnet against the spring force of a compression spring attracted, whereby a bell crank attached to a spring rocker pivots becomes. By pivoting the angle lever, the pressure point changes between the bell crank and the rocker arm, causing a shift Coupling sleeve leads against the force of a compression spring, so that the locking mechanism is unlocked. The latch of the door can be turned by turning a lock operating button be opened, in which case a corresponding voltage pulse is applied to the electromagnet so that the armature is raised, the angle lever pivoted accordingly via the spring rocker and the coupling sleeve back into the Uncoupling position is moved. This locks the locking mechanism again. Furthermore, it is proposed in this document, after unlocking the Closing mechanism with the help of a time control a closing operation of the Monitoring the locking mechanism, so that after a certain time interval the electromagnet is controlled analogously to the procedure described above, to lock the locking mechanism. From the above description it can be seen that this door fitting or its locking mechanism is relatively complicated is constructed.

The present invention is therefore based on the object of a door fitting to propose a locking mechanism for a door that made it much easier Structure with a smaller number of items, so that Manufacturing costs reduced and the assembly of the door fitting can be simplified.

The present invention is characterized by a door fitting with the features of Claim 1 solved. The subclaims describe advantageous configurations of the Present invention, which in itself for a simple construction of the contribute door fitting according to the invention.

The door fitting according to the invention essentially comprises a locking means, which is movable between an unlocked position and a locked position is a locking mechanism that mechanically with the locking mechanism of the The door is to be coupled and the locking mechanism is blocked if this happens Locking means is in the locking position, an adjustment mechanism in the presence of an adjustment signal, a movement of the locking means in the Unlocking position allows and a holding mechanism that after a Movement of the locking means in the unlocking position the locking means stops there.

The holding mechanism is in particular designed such that it the locking means also holds in the unlocked position, if that before on the adjustment mechanism adjustment signal no longer exists. When you create one again Adjustment signal to the adjustment mechanism, however, gives the holding mechanism Locking means free again so that they return to the locked state can. This means that the holding mechanism with each activation of the Adjustment mechanism the locking means alternately in the unlocked position holds or releases for a return movement into the locking position.

For this purpose, the holding mechanism can have two oppositely arranged have crown-like edges, the lower crown edge arranged alternately includes first and second grooves, which are either the locking position or Unlocked position of the locking means are assigned. In particular, they show first and second grooves different depths. That through one Locking means formed locking means has on its outside preferably several protrusions by the holding mechanism with each actuation of the adjustment mechanism alternately transferred into the first and second grooves become. The edge opposite the edge to the first and second grooves Forming spikes are arranged such that each time the Adjustment mechanism, i.e. each time the locking bolt is pulled up, the Projections of the locking bolt on the teeth of the opposite edge moved along in the circumferential direction of the locking bolt and in a Correspondingly adjacent first and second grooves are transferred so that with each Actuation of the adjustment mechanism of the locking bolt rotated in the circumferential direction becomes.

The locking means can in particular in the form of a locking bolt and Adjustment mechanism in the form of an electromagnet arrangement, the Locking bolt is linearly movable in the coil of the electromagnet assembly and when a voltage is applied to the coil into the coil, i.e. to the Unlocked position is pulled. The locking bolt is preferably to the Locked position biased towards elastic so that when the Locking bolt automatically by the locking mechanism of the locking bolt returns to the locked position.

The adjustment mechanism can with a control circuit, for example in the form of a Microprocessor assembly to be connected, which is a key or keyboard input User on the outside of the corresponding door monitors and evaluates and at Determine an access authorization an adjustment signal to the adjustment mechanism applies so that the locking means from the locking position in the Unlocked position is moved to actuate the locking mechanism allow. The control circuit can be timed in such a way that after a certain opening time (for example between 10s and 15s) of the adjustment mechanism is controlled again to return the locking means in the Bring locking position.

The locking mechanism can have a first disk, the recesses has, in which the locking bolt engages in the locking position, so that the In this case the disc cannot be rotated. The disc is over one Rotary shaft coupled to the locking mechanism of the door, so that when the Washer through the locking bolt actuation of the closing mechanism of the door is prevented.

The locking mechanism is preferably designed such that an actuation the locking mechanism is allowed from the inside of the door. For this purpose includes the locking mechanism a second, rotatably mounted disc, which also on the Rotary shaft of the aforementioned disc can be placed, but not with this is non-positively coupled. Rather, this second disc is directly from the inside the door via a corresponding actuating mechanism, for example in the form of a Door handle, set in rotation. This second pane has rounded corner sections its outside, when the disc rotates as a result of the actuation of the inner door handle pressed against the locking bolt in the locking position to move it slightly out of the locked position. This Relative movement of the locking bolt out of the locking position especially so large that the locking bolt also from the recesses first-mentioned disc is moved out, so that subsequently the with the Locking mechanism of the door coupled first disc can be rotated. The the second disc is mechanically coupled to the first disc such that after a certain relative movement of the second disk with respect to the first disk a transmission of the torque from the second disk to the first disk and thus also on the closing mechanism of the door (via the rotating shaft) is possible.

The door fitting according to the invention has a relatively small number of individual parts built, which can also be easily assembled. This will decrease the Manufacturing costs for the door fitting according to the invention, and the door fitting can easiest way to be attached to any door.

Fig. 1 zeigt eine Seitenansicht einer Tür mit einem daran angebrachten Türbeschlag gemäß der vorliegenden Erfindung,

Fig. 2 - 5 zeigen verschiedene Ansichten eines bevorzugten Ausführungsbeispiels des erfindungsgemäßen Türbeschlags zur Erläuterung des Aufbaus des erfindungsgemäßen Türbeschlags,

Fig. 6 zeigt verschiedene Ansichten eines in den Fig. 2-5 dargestellten Druckelements,

Fig. 7 zeigt verschiedene Ansichten einer in Fig. 3 dargestellten drehbar gelagerten Scheibe,

Fig. 8 zeigt verschiedene Ansichten einer in den Fig. 4 und 5 dargestellten weiteren drehbar gelagerten Scheibe, die zusammen mit der in Fig. 7 gezeigten Scheibe einen Verriegelungsmechanismus des erfindungsgemäßen Türbeschlags bildet,

Fig. 9 zeigt eine vergrößerte Darstellung eines in den Fig. 2-5 dargestellten Haltemechanismus des erfindungsgemäßen Türbeschlags, und

Fig. 10 zeigt verschiedene Ansichten einer Drehwelle, die bei dem erfindungsgemäßen Türbeschlag zur Übertragung eines Drehmoments auf den Schließmechanismus der in Fig. 1 gezeigten Tür eingesetzt wird.

The invention is explained in more detail below on the basis of a preferred exemplary embodiment with reference to the accompanying drawing:

1 shows a side view of a door with an attached door fitting according to the present invention,

2-5 show different views of a preferred embodiment of the door fitting according to the invention to explain the structure of the door fitting according to the invention,

6 shows various views of a printing element shown in FIGS. 2-5,

7 shows various views of a rotatably mounted disc shown in FIG. 3,

8 shows various views of a further rotatably mounted pane shown in FIGS. 4 and 5, which together with the pane shown in FIG. 7 forms a locking mechanism of the door fitting according to the invention,

FIG. 9 shows an enlarged illustration of a holding mechanism of the door fitting according to the invention shown in FIGS. 2-5, and

10 shows various views of a rotary shaft which is used in the door fitting according to the invention for transmitting a torque to the locking mechanism of the door shown in FIG. 1.

1 shows a schematically represented door fitting 1 according to the present Invention, which is on the inside of any door 2, such as an entrance door is appropriate. There is also a door fitting on the outside of door 2 a keyboard 9 integrated therein for entering a number code. The door 2 is with a configured, for example, as a mortise lock mechanism that 1 includes a latch 3 and a bolt 4 and not via an internal shown profile cylinder is locked and unlocked. The invention shown in Fig. 1 Door fitting 1 is designed such that it actuates the locking mechanism of the outside of the door 2 only permits if a correct one via the keyboard 9 Number code has been entered by a user. The door fitting, on the other hand, allows 1 from the inside of the door 2 always an actuation of the locking mechanism. For Operation of the locking mechanism of door 2 is on the inside and outside of door 2 in each case an actuating mechanism is provided, one of which is exemplary in FIG. 1 outer handle 5 and an inner handle 6 is shown. The twist grip 5 is with the locking mechanism, i.e. with the profile cylinder, the door 2 rotatable via a first mounted shaft 7 coupled, this shaft 7 on the inside of the door 2nd preferably has a recess into which one extends through the door fitting 1 second shaft 8 is positively and positively inserted, so that rotation of the first Shaft 7 and thus an actuation of the locking mechanism, i.e. of the profile cylinder, the Door 2 is only possible if the door fitting 1 also rotates the second shaft 8 allowed. As has already been explained above, the door fitting 1 is in particular such designed that the inner rotary handle 6 always rotates the shaft 8 and thus also a rotation of the shaft 7 and an actuation of the closing mechanism of the door 2 is possible. Of course, the exemplary embodiment explained in more detail below of the door fitting 1 according to the invention can also be modified such that the Inside the door 2, actuation of the locking mechanism is only possible if the user has a corresponding numerical code 9 or another Access authorization has been entered.

The profile cylinder, not shown in FIG. 1, of the closing mechanism of the door 2 is For example, designed such that by a corresponding full revolution Door handles 5 and 6 of the bolt 4 first moved out in a first step and as a result a further full turn of the door handles 5 and 6 in its fully extended position is transferred. Accordingly, full turns of the door handles 5 and 6 in opposite direction to a return movement of the bolt 4 in its half-extended position or its fully retracted position. Is the Door latch 4 already in its fully retracted position, can by rotating the Door handles 5 and 6 in the opposite direction the case 3 are retracted.

The door fitting according to the invention is described below with reference to FIGS. 2-5 are explained in more detail. 2-5 show different states of the door fitting according to the invention during its assembly. Show in particular 2 - 5 are plan views of the door fitting 1 according to the invention, if this is removed from the inside of the door 2 shown in FIG. 1.

As can be seen in FIG. 2, the door fitting according to the invention comprises, for example made of cast iron, in the interior of which the individual parts of the Door fitting according to the invention are housed.

The door fitting 1 shown in Fig. 2 comprises a locking means in the form of a Locking bolt 11, which has a widening 12 with a at its lower end certain external shape. The locking bolt 11 serves as follows is explained in more detail, for blocking the closing mechanism of the door shown in Fig. 1 2. For this purpose, the locking bolt 11 is movable between one Unlocked and locked position. 2-5 is the Locking bolts each shown in its locking position. Of the Locking bolt 11 can move from its locking position into the unlocking position upwards with the help of a likewise provided in the housing of the door fitting 1 Adjustment mechanism can be moved. In the present case, the adjustment mechanism formed by an electromagnet arrangement, of which a coil 10 and a in FIG Anchor 50 are shown. The coil 10 and the armature 50 form a so-called lifting magnet, the locking bolt 11 mechanically coupled to the armature 50 or even is designed in one piece with this. When the coil 10 is energized, the armature 50 is also connected the locking bolt 11 thereon drawn into the coil body, wherein in the retracted position (unlocking position) the locking mechanism of the door fitting 1 according to the invention is unlocked.

The locking bolt 11 is, for example, via a spiral spring 13 to the Preloaded locking position so that below even closer to explanatory circumstances when the bobbin 10 is not energized, a return movement of the armature 50 with the locking bolt 11 located thereon in the FIGS. 2-5 locking position shown is possible. Below the locking bolt 11 there is a larger recess in the housing of the door fitting 1, in which the Locking mechanism of the door fitting is to be arranged, which with the help of Locking bolt 11 is either locked or unlocked. In this recess is one for example, circular opening 21 formed to that shown in FIG. 1 The inside of the door is open, so that through this opening 21, as follows in more detail is explained, the inner rotary handle 6 shown in Fig. 1 with the Locking mechanism of the door fitting can be mechanically coupled.

The locking bolt 11 and the armature 50 are by a holding mechanism which essentially consists of two parts 15 arranged opposite one another and 16. These two parts 15 and 16 are together with the coil body 10 in the housing of the door fitting 1, for example via one shown in FIG Mounting plate 17, attached, in particular screwed. The holding mechanism has according to the present invention the task when moving the locking bolt 11 in its unlocked position, at least temporarily, in the Keep unlocking position and under certain conditions Locking bolt later for a return movement to the locking position to release. For this purpose, the two parts 15 and 16 of the holding mechanism edges 18 and 19 arranged opposite one another, the two edges 18 and 19 run crown-shaped and by alternately arranged rising and falling Flanks are formed. With the help of these crown-shaped edges, the Holding mechanism consisting of the two parts 15 and 16 for that with each Powering the coil body 10 of the locking bolt 11 alternately in his Unlocked position is held or transferred back to the locking position. The locking bolt 11 has at least one projection 20 on its outside on. To the storage of the locking bolt in the lower part 16 of the To improve the holding mechanism, however, the locking bolt has several Projections evenly distributed along its circumference, in particular two Opposed projections 20. These projections are made with each Powering the coil body 10 alternately in a higher or lower lying Groove of the crown-shaped edge 19 of the lower part 16 of the holding mechanism transferred, the projections 20 from a groove in an adjacent groove over the Above the edge 19 arranged counter edge 18, which is also a crown-shaped Has course, be directed. Are the projections 20 of the Locking bolt 11 in higher-lying grooves of the edge 19, the Locking bolt 11 held in its unlocked position while the Locking bolt 11 is in its locking position if the projections 20th are arranged in the deeper grooves of the edge 19. The function of the Holding mechanism will be explained later in detail with reference to FIG. 9.

The bobbin 10 is energized via an evaluation or Control circuit 24, in particular by a battery powered Microprocessor assembly can be formed, which is preferably also in the housing the door fitting 1 is housed. The control circuit 24 monitors the also in Fig. 1 shown keyboard 9, which is located on the outside of the door 2. Instead of keyboard monitoring is also monitoring key entry, a magnetic card or the like possible, so that the control circuit 24 due to a Entry of a user can determine whether the user to operate the Locking mechanism of the door 2 shown in Fig. 1 is authorized.

The control circuit 24 is initially in an idle state. By actuation the key or keyboard input on the outside of door 2 becomes the control circuit 24 switched to an operating state and evaluates the key of the user or the entered code, etc. By comparing it with a given code, the Control circuit 24 whether the appropriate user to operate the Locking mechanism is authorized and has access authorization. Will not Access authorization recognized, the control circuit 24 switches back to the previously Waiting state mentioned, wherein the locking bolt 11 continues in the in the Fig. 2 - 5 locking position remains and an actuation of the Locking mechanism blocked at least from the outside of the door 2. Has the Control circuit 24, however, an access authorization is recognized to the Electromagnetic arrangement of the door fitting 1 an adjustment signal in the form of a Voltage pulse applied, causing the locking bolt 11 in its Unlocked position moves and there by the holding mechanism 15, 16 initially is held. The holding mechanism 15, 16 ensures in particular that in this case the locking bolt 11 also remains in its unlocked position if meanwhile, the coil 10 of the electromagnet is no longer energized or to the Electromagnet arrangement applied voltage pulse has already disappeared again. The Control circuit 24 is timer-controlled and monitors the sequence of any given Opening time, which can be between 10s and 15s, for example. After this The control circuit 24 applies a renewed voltage pulse to the coil 10 during the opening time to energize the solenoid assembly. As below in more detail Referring to Fig. 9 is explained by this renewed voltage pulse, the a renewed adjustment signal for the locking bolt 11 corresponds to the Locking bolt 11 released by the holding mechanism 15, 16 and can due to the retroactive spring force of the coil spring 13 back into its Return to the locked position. Since the locking bolt 11 below the lower Part 16 of the holding mechanism is arranged, this return process is additional supported by the weight of the locking bolt 11. Once the Locking bolt 11 has returned to its locking position, blocked he over the arranged in the lower recess of the housing of the door fitting 1 Locking mechanism again actuates the locking mechanism of FIG. 1 shown door 2.

The control circuit 24 also continuously monitors the position of the locking bolt 11. To report the position of the locking bolt 11, the control circuit 24 continuously the inductance of the coil 10. The relative change in inductance is present directly proportional to the ratio of the air distances in the retracted and extended State of the armature 50, which is coupled to the locking bolt 11. As an air gap generally the distance between the position of the fully retracted anchor 50 and the actual position of the armature 50. The coil 10 and the armature 50 are advantageously designed such that the inductance ratio between the if the armature is fully retracted and the inductor is full extended armature occurring inductance is as large as possible and for example 10: 1 is, so that the evaluation by the control circuit 24 with a relatively low electronic effort can be done.

The interaction of the electromagnet arrangement on the one hand and that as a restoring force acting spring 13 can of course also be modified such that with Help of the electromagnet of the locking bolt 11 when the coil is energized Electromagnet is pressed permanently into the locking position while for Unlocking the power supply to the coil of the electromagnet is interrupted, so that the spring 13 transfers the locking bolt into the unlocked position. At this modification, however, would have to lock the locking mechanism of the door Coil of the electromagnet are constantly energized, which is compared to that in FIGS. 2-5 arrangement shown would result in a significantly higher power consumption.

After the general operation of the door fitting according to the invention a preferred embodiment has been explained, the structure is below described this door fitting according to the preferred embodiment become.

As has already been explained, are in the upper part of the door fitting 1 an electromagnet assembly 10, 50 formed adjustment mechanism and below that two parts 15,16 comprehensive holding mechanism arranged. The anchor 50 of the Electromagnet is movably mounted in the coil 10 and with the locking bolt 11 coupled, on the one hand the armature 50 by a in the upper part 15 of the Holding mechanism formed opening and on the other hand the locking pin 11th through an opening formed in the lower part 16 of the holding mechanism is.

As has already been explained, the locking bolt 11 locks in its Locking position in the lower recess of the housing of the door fitting 1 arranged locking mechanism, which will be explained in more detail below.

To mount this locking mechanism, a first is in this recess shown in Fig. 2 pressure element 22, which with the help of two Coil springs 23, which are supported on the underside of the recess, to the Locking bolt 11 is biased. Fig. 6 shows different views of this Pressure element 22, with FIG. 6a the front view also shown in FIG. 2, FIG. 6b a Side view and Fig. 6c shows a plan view of this pressure element 22. The single ones Views show that the pressure element from a substantially cuboid Is formed and a curved portion 24 formed thereon, wherein the curved section 24 has a smaller thickness than the base body. On the underside of the base body, two holes 25 are formed for receiving serve the coil springs 23 shown in FIG. 2. The pressure element 22 shown in FIG. 6 is first directed with the curved section 24 down into the Receiving cavity of the housing of the door fitting 1 arranged so that it is as in Fig. 2nd shown comes to lie.

Then a washer 29 in the aforementioned cavity of the housing as 3 shown in FIG. Fig. 7 shows different views of this disc 29, wherein Fig. 7a is a plan view of one side of this disc 29, Fig. 7b is a side view and 7c shows a plan view of the opposite side of the disk 29. Like that can be seen in individual views, the disc 29 has several evenly along its circumference distributed rounded corner portions 35 so that the disc 29 a has a cloverleaf-like shape. In the disc 29 is a circular through opening 32 trained. Furthermore, the disk 29 has an elongated, curved shape Recess 31. As the side view in Fig. 7b and the top view of Fig. 7c can be removed, the disc 29 on the side surface visible in Fig. 7c a preferably cylindrical projection 33, in which the circular through opening 32, a square recess 34 is formed, the the circular through opening 32 connects, the side edges of this square recess 34 substantially on the side edges of the through opening 32 connect. 7a and 7b that between the individual rounded corner sections 35 of the pane 29 are recessed 30, whose outer shape is the shape of the curved section 24 of the pressure element 22 corresponds.

The disc shown in Fig. 7 is with the cylindrical projection 33, the Diameter essentially the diameter of the opening 21 shown in FIG Corresponds to the housing of the door fitting 1, inserted into this opening 21, so that the washer 29 comes to lie as shown in Fig. 3. As can be seen in FIG. 3, the Thickening of the locking bolt 11 in the locking position between two rounded corner portions 35 of this disc 29. The diameter of the disc 29 is slightly smaller than the diameter of the circular cavity of the housing in which The center of the opening 21 is formed so that with the help of the projection 33 in the Opening 21 mounted disc 29 can be rotated in the corresponding cavity. So that the washer 29 is correctly inserted into the cavity of the door fitting housing can, the pressure element 22 must something against the spring force of the springs 23 down are pressed, and so that the disk 29 is inserted into the curved portion 24 of the pressure element 22 as a result of the biasing force of the springs 23 against one of the troughs 30 the disc 29 presses, and due to this pressure force, a slight resistance to that Twisting the disc 29 exerts, the disc-shaped when rotating the disc 29 Section 24 always engages in a subsequent recess 30 of the disk 29, so to define predetermined rotational positions of the disk 29.

As previously explained, the cylindrical one shown in Figs. 7b and 7c became Projection 33 through the opening 21 of the door fitting housing shown in Fig. 2 guided. The one in FIG. 1 can now be seen from the outside of the door fitting housing inner door handle 6 shown also inserted into the opening 21 and there be non-positively coupled to the disc 29. For this purpose, the door handle 6 have a square projection, the outer shape of which essentially corresponds to that in Fig. 7c corresponds to the square recess 34, so that a twisting of the Door handle 6 brings about a rotation of the disc 29.

Then, as shown in Fig. 4, another disc 36 is already on the pre-assembled disc 29, Fig. 8 different views accordingly 7 shows the views of this disk 36 shown in FIG. 8a accordingly shows one 4 corresponding plan view of a side surface of this disc 36, while Fig. 8b is a side view and Fig. 8c is a plan view of the opposite Side surface of this disc 36 represents. Fig. 8b can be seen that this Disk 36 is formed essentially in two layers. The top layer is doing this formed by rounded corner portions 37 which are essentially analogous to that The outer shape of the pre-assembled disc 29 are formed. The second layer form projections 39, which are formed adjacent to the rounded corner sections 37 each one of the inner shape of the circular cavity of the door fitting housing exhibit. The projections 39 are spaced apart from one another by cutouts 40, wherein the width of these recesses is at least the width of the thickening 12 of the Locking bolt 11 corresponds. At the bottom of the disc 36 is a slight elongated projection 42 present. Finally, there is also one in the disk 36 Through opening 41 is formed, but which has a square shape.

The disk 36 is now, as shown in FIG. 4, on the previously assembled disk 29 placed, the projection 42 formed on the underside of the disk 36 in the curved recess 31 of the disc 29 is inserted. This curved recess 31 allows one of the length of this recess corresponding relative movement between the disk 29 and the disk 36 Twist one of the two disks before the projection 42 at one end of the elongated Recess 31 arrives and thus the torque of one disc on the other Disc is transferred. Fig. 4 can be seen that in the locked position Locking bolt 11 protrudes into one of the recesses 40 of the disk 36, so that in In this state, the disk 36 cannot be rotated.

Then, another arrangement is shown on the arrangement shown in FIG. 5 according to FIG. 5 Pressure element 44 is placed, which is analogous to pressure element 22 shown in FIG. 6 is trained. Accordingly, this pressure element 44 also essentially has one cuboid base body and a curved section formed thereon 45 smaller width. This second printing element becomes analogous to the first Pressure element 22 with the curved section 45 directed downward into the Cavity of the door fitting housing inserted. The second pressure element 44 is also for example via spiral springs 46 which are located on the one hand on the housing of the door fitting 1 and on the other hand in openings formed on the underside of the pressure element 44 support, biased towards the locking bolt 11. For this reason, the Inserting the pressure element 44 slightly against the biasing force of the springs 46 be pressed down so that the curved portion 45 into one of the troughs 38 of the Disc 36 engages. Accordingly, the second pressure element 44 also serves as Resistance element for the rotation of the disc 36, wherein when the disc is rotated 36 the curved section 45 always in one of the troughs 38 of the disk 36, which is analogous are formed to the troughs 30 of the disk 29, engages and thus certain Locking positions for the disk 36 defined.

With the construction shown in FIG. 5, the door fitting 1 according to the invention is in principle completed. The two disks 29 and 36 form the one described above Locking mechanism of the door fitting according to the invention.

For transmitting a torque from the external turning handle 5 shown in FIG. 1 the locking mechanism or from the inner rotary handle 6 shown in FIG the locking mechanism on the closing mechanism of door 2 must be this Locking mechanism mechanically coupled with the locking mechanism become. A rotary shaft can be used for this purpose, which is shown in FIG shown openings 32 of the disc 29 and 41 of the disc 36 is to be introduced. Fig. 10 shows various views of this rotary shaft, FIG. 10b being a longitudinal side view, Fig. 10a is a plan view of the end face facing the door 2 and Fig. 10c one Top view of the end face of the rotary shaft 8 facing the door handle 6. The 10 shows that the rotary shaft 8 as a whole is formed in three parts, with a square section 48 first at the door end and then a further square section 49 is formed, one has a larger diameter than the first-mentioned square section 48. To the another square section 49 includes an elongated section 47 circular cross section. This rotary shaft 8 is now with section 47 first by the disk 36 shown in FIG. 5 and then by the disk shown in FIG. 3 Washer 29 guided, the square section 49 of the rotary shaft 8 in a form-fitting manner the square recess 41 of the disc 36 is arranged and on the surface of the Disc 29 rests. The elongated section 47 with the circular cross section is positively guided and protrudes through the circular opening 32 of the disc 29 advantageously at the inside of the door fitting housing, so that the in Fig. 1 shown internal handle 6 can be placed on this elongated portion 47 can. The inner rotary handle 6 runs loosely on the rotary shaft 8, i.e. a rotation of the Internal rotary handle 6 is not transmitted directly to the rotary shaft 8. Of the Inner rotary handle 6 is, however, mechanically coupled directly to the slide 29 in that it has a four-channel projection that is complementary to the square Recess 34 of the disc 29 is formed and inserted into this. Thus one causes Rotation of the inner rotary handle 6 at the same time a rotation of the lower disc 29 of the Door fittings. As has already been mentioned at the beginning, runs through the Locking mechanism of the door 2 shown in Fig. 1, a door-outside shaft 7, the part of the profile cylinder for actuating the locking mechanism, wherein a rotation of the external rotary handle 5 is transmitted directly to this shaft 7. At the On the inside of the door, this shaft 7 has a recess, which is in particular complementary to the outer shape of the short square section 48 of the rotary shaft 8 of the Door fitting according to the invention is designed so that by coupling this square section 48 with the further rotary shaft 7 of the locking mechanism one Torque transmission from the rotary shaft 8 to the rotary shaft 7 and vice versa can take place.

The door fitting according to the invention now works as follows.

In the locked position, it is located at the lower end of the locking bolt 11 trained thickening 12 in a recess 40 of the disc 36. A rotation of the Disk 36 is therefore not possible. Tried in this state, without unlocking of the locking bolt 11 from the outside of the door over that shown in Fig. 1 External turning handle 5 to operate the closing mechanism of the door 2 is via the in the four-cornered opening 41 of the disc 36 positively held rotary shaft 8, which on the Door inside 2 is mechanically coupled to the outside rotary shaft 7, a rotation this rotary shaft 7 and thus actuation of the closing mechanism of the door 2 blocked. A rotation of the outer rotary handle 5 and the outer rotary shaft 7 with subsequent actuation of the locking mechanism is only possible if by the Washer 36 does not rotate the rotary shaft 8 of the door fitting 1 according to the invention is blocked. In contrast, the locking bolt 11 from his Moving the locking position into the unlocking position, the disc 36 turn freely so that the locking mechanism is actuated from the outside of the door can be.

The locking mechanism of the door fitting according to the invention is now such designed that in the event that the locking bolt in the Locking position, the locking mechanism is from the outside of the door the door 2 can not be operated, but this from the inside of the door over the Internal handle 6 is possible. The reason for this is the fact that contrary to the outside turning handle 5 the inside turning handle 6 directly mechanically with that in FIGS. 3 and 7 Disc 29 is coupled, so that a rotation of the outer handle 6 on the in particular shown in Fig. 7c square recess 34 of the disc 29 on the Disk 29 is transmitted. Is now due to an actuation of the inner rotary handle 6th the disc 29 rotated, enables in the curved recess 31 of the disc 29 mounted projection 42 of the disc 36 (see. Fig. 8c) a slight relative rotation the disc 29 opposite the disc 36 arranged above one end of the elongated recess 31 abuts the projection 42. This relative rotation enables a corresponding one of the first when the inner rotary handle 6 is actuated in particular in Fig. 3 rounded corner portion 35 of the disc 29 against the lower end of the locking bolt 11 is rotated or pressed so that the corresponding rounded corner portion of the disc 29 against the locking bolt 11 the spring force of the coil spring 13 slightly upwards and out of the locking position can move out. The locking bolt 11 is moved upwards so far that he no longer in the recess 40 between two adjacent projections 39 protrudes upper disc 36. At this moment, the disc 36 is no longer blocked. After moving the locking bolt 11 out of one of the recesses 40 turns on due to the rotation of the lower disc 29 at a certain time corresponding end of the recess 31 on the underside of the disk 36 initiate trained projection 42. By turning the shown in Fig. 1 Inner rotary handle 6 can thus over the recess 31 of the disc 29 and the projection 42 of the disk 36, the rotation of the disk 29 on the disk 36 and the rotary shaft 8 positively supported in the recess 41 are transmitted. The Disk 36 is no longer blocked at this time, as has already been mentioned and can thus be rotated by operating the inner rotary handle 6, so that the rotation of the rotary shaft 8 on the door-side rotary shaft 7 shown in FIG Locking mechanism of the door 2 can be transferred to the shooting mechanism too actuate.

Was the lower disk 29 rotated so far that one of the rounded corner sections 35 the disk 29 has passed the locking bolt 11 and now one of the trough 30 the disc 29 is opposite the locking pin 11, the locking pin 11 return to the locking position shown in Fig. 5, so that the Thickening 12 at the lower end of the locking bolt 11 again in a recess 40 engage the upper disc 36 and thus can block the disc 36. By 1 can again turn the inner rotary handle 6 shown in FIG described process can be repeated so that again a relative rotation of the lower Disc 29 compared to the disc 36 arranged above and a brief unlocking of the locking bolt 11 is brought about, then via the mechanical driver mechanism, which through the recess 31 of the lower disc 29 and the projection 42 of the upper disc 36 is formed, also the upper disc 36 and thus turn the rotary shaft 8 and the closing mechanism of the door to be able to operate.

Finally, it should be pointed out that the particular in Fig. 8 and Fig. 4th Projections 39 shown of the upper disc 36 between the opposite circular sections 24 and 45 of the two pressure elements arranged relative to one another 22 and 44 are arranged, these projections 39 unimpeded between the two Pressure elements 22 and 44 can pass when the disc 36 rotates.

In the following, with reference to FIGS. 5 and 9, the unlocking and Locking process using the holding mechanism proposed according to the invention are explained.

As previously described, the retention mechanism essentially comprises two parts 15 and 16 which are fixed in the housing of the door fitting. The two Parts each have a serrated or crown-like edge 18 and 19, respectively each have a through opening formed in the upper part 15 and lower part 16 limit for the anchor 50 or the locking bolt 11. The anchor 50 is thus through the through opening of the upper part 15, the edge 18 of the part 15 extends in the circumferential direction of the armature 50 while the locking bolt 11 is guided through the through opening of the lower part 16. The spikes of the lower one Edges 19 are due to an alternating arrangement of rising and falling Flanks formed, the rising according to the present embodiment If the same difference in height is overcome, the flanks are steeper than the descending ones Flanks run. In the lower edge 19 are between the individual points Recesses formed, wherein, as can be seen in particular from FIG. 9, alternately deep recesses or grooves 26 and less deep grooves 27 are formed are. The individual grooves 26 and 27 are uniform along the circumference of the edge 19 distributed, preferably a total of four grooves 26 and four grooves 27th are arranged alternately in the circumferential direction of the edge 19. The grooves 26 and 27 serve as storage of the aforementioned projections 20, which are on the outside of the Locking bolt 11 are formed. The locking bolt 11 preferably has two oppositely arranged pin-like projections 20. Are they This corresponds to projections 20 in opposing deep grooves 26 the locking position of the locking bolt 11. However, the Projections 20 in opposite, less deep grooves 27 is the Locking bolt from its locked position to an unlocked position emotional.

Above the edge 19, the individual teeth of the counter edge 18 are offset from the Jagged edge 19 arranged. Between the individual teeth of the counter edge 18 Grooves 28 can also be formed, which act as a stop surface for the projections 20 serve the locking bolt 11.

9, the projections 20 of the locking bolt 11 are in opposite deep grooves 26. Is now used to unlock the locking bolt 11 a voltage pulse is applied to the electromagnet or to the coil 10, the Anchor 50 with the locking bolt 11 coupled to it pulled upwards, so that the projections 20 on the perpendicularly opposite to the corresponding groove 26 descending flank of the counter edge 18 (seen from the part 16) nudge. Then the projections 20 along this falling edge of the Counter edge 18 guided so that the projections 20 as shown in FIG. 9 to the right in one corresponding groove 26 adjacent groove 28 of the opposite edge 18 are conveyed. In this Groove 28, the corresponding projection 20 remains held even if the Coil 10 current should be supplied. However, as soon as the power supply to the coil 10 is interrupted, i.e. the voltage pulse applied to the coil 10 has disappeared, the armature 50 with the locking bolt 11 coupled thereto is removed from the coil 10 released and pressed down by the coil spring 13 shown in Fig. 5, so that strike the projections 20 on a falling flank of the lower edge 19 and due to the weight of the locking bolt 11 and in particular the Restoring force of the spring 13 along this falling edge in one of the corresponding groove 28 of the opposite edge 18 adjacent groove 27 are performed. The projections 20 now remain in this groove 27 until a new one Voltage pulse is applied to the coil 10, which pulls the armature 50 upwards and the locking bolt 11 with the projections 20 thereon, repeating the process described above, except that now after the disappearance of the voltage pulse, the projections 20 of one less deep recess 27 are again guided into a deeper recess 26.

Overall, this results from the alternating application of a voltage pulse the coil 10 of the electromagnet arrangement has the zigzag-like course shown in FIG. 9 of the protrusions 20, the protrusions 20 upon application of a voltage pulse initially from a deep groove 26 in a counterclockwise direction adjacent arranged shallow groove 27 are transported and remain there until a renewed voltage pulse is applied, which protrusions 20 from the corresponding Groove 27 transferred back into a deep groove 26. This way when you create Voltage pulses to the electromagnet arrangement of the locking bolts 11 alternately transferred to its locking and unlocking position. So that is at the same time rotating the locking bolt counterclockwise. Are the prongs of the edge 18 arranged such that above the individual grooves 26th and 27 a rising edge of the counter edge 18 seen from the part 15 is arranged, the projections 20 migrate with the locking bolt 11 alternately applying voltage pulses to the electromagnet arrangement accordingly clockwise through the individual grooves 26 and 27 of the lower edge 19th

In the locked position, the projections 20 are placed in the deep groove 26, so that thereby the locking bolt 11 is held at the same time. It has been done before mentions that the locking bolt 11 has a thickening 12 on its underside which, as shown in Fig. 5, in the locked position of the Locking bolt 11 is guided in a constriction 43 of the door fitting housing. This thickening 12 is shaped such that it then only narrows the 43rd can happen if the projections 20 are in deep grooves 26, because only in this If the thickening 12 with the locking bolt 11 is aligned with the constriction 43 the housing is rotated. However, if the projections are in less deep grooves 27, is synonymous with the fact that the thickening 12 of the locking bolt 11 is not is aligned with the constriction 43 and thus does not pass the constriction 43 can and rests on the upper edge of the constriction 43. Of course, the amount of Grooves 27 are dimensioned such that in the unlocked position Locking bolt 11 is held in the grooves 27 solely via the projections 20, without to rest with its thickening 12 on the upper edge of the constriction 43.

The holding mechanism described above with the crown-like parts 15 and 16 leads thus the function that after movement of the locking bolt 11 from its Locking position in the unlocking position of the locking bolt in the corresponding grooves 27 in the unlocked position even after a subsequent one The control circuit 24 shown in FIG. 2 does not occur Adjustment signal remains held. Only when a new adjustment signal occurs through the Control circuit 24 or when a new voltage pulse is applied to the coil 10 Electromagnetic arrangement, the locking bolt 11 is back in the Locked position transferred. This way it becomes a relatively simple one Holding mechanism for the locking bolt 11 provided to by means of the Control circuit 24 timed the locking mechanism of the to release the door fitting according to the invention for a certain opening time. After Detection of a user's access authorization sets the purpose for this Control circuit 24 a first voltage pulse to the coil 10 of the Electromagnet arrangement, whereby the locking bolt 11 of the in Fig. 5th locking position shown in the unlocking position and the projections 20 in higher lying grooves 27 are transferred. After a predetermined The control circuit 24 applies a renewed voltage pulse to the coil 10 during the opening time on, as a result of the holding mechanism described above, the projections 20 of high grooves 27 are converted into deep grooves 26 and the locking bolt 11 returns to the locked position. Only during the previously defined Opening time is the locking mechanism consisting of those previously described Disks 29 and 36 and the rotary shaft 8 released, so that the locking mechanism the door 2 from the outside of the door only during this opening time the in Fig. 1st external turning handle 5 shown can be actuated.

Claims (19)

Door fitting (1) for a locking mechanism of a door (2), with a locking means (11) which can be moved between an unlocking position and a locking position, with a locking mechanism (29, 36) which can be mechanically coupled to the locking mechanism of the door (2) and blocks an actuation of the locking mechanism if the locking means (11) is in the locking position, with an adjustment mechanism (10, 50) which enables movement of the locking means (11) into the unlocking position when an adjustment signal occurs, and with a holding mechanism (15, 16) which, after a movement of the locking means (11) from the locking position into the unlocking position, holds the locking means (11) in the unlocking position,
characterized, that the holding mechanism (15, 16) is designed in such a way that, after the occurrence of an adjustment signal, it holds the locking means (11) in the unlocking position even if the adjustment signal does not occur if the locking means (11) is in the locking position before the adjustment signal occurs was, and that the holding mechanism (15, 16) is designed in such a way that after the occurrence of an adjustment signal when it subsequently does not occur, it releases the locking means (11) for a return movement into the locking position if the locking means (11) was in the unlocking position before the adjustment signal occurred . Door fitting according to claim 1,
characterized, that the adjusting mechanism (10, 50) comprises an electromagnet arrangement which moves the locking means (11) into the unlocking position when a voltage is applied to the electromagnet arrangement, and that the locking means (11) is movably mounted in the electromagnet arrangement (10, 50) and is moved into the electromagnet arrangement when a voltage is applied to the electromagnet arrangement. Door fitting according to one of the preceding claims,
characterized, that the locking means (11) is biased towards the locking position by an elastic means (13). Door fitting according to one of the preceding claims,
characterized, that the locking means is formed by a locking bolt (11) which has at least one projection (20) on its outside, that the holding mechanism (15, 16) is designed such that, after the occurrence of an adjustment signal, it transfers the at least one projection (20) of the locking bolt (11) into a first groove (27) assigned to the unlocking position if the locking bolt (11) occurs before it occurs the adjustment signal was in the locked position, and that the holding mechanism (15, 16) is designed such that, after the occurrence of an adjustment signal, it transfers the at least one projection (20) of the locking bolt (11) into a second groove (26) corresponding to the locking position if the locking bolt (11) occurs before it occurs the adjustment signal was in the unlocked position. Door fitting according to claim 4,
characterized, that the holding mechanism (15, 16) has a plurality of uniformly arranged first and second grooves (27, 26) which are alternately arranged in the circumferential direction of the locking bolt (11) and which delimit an opening through which the locking bolt (11) is guided, the second grooves ( 26) have a shallower depth than the first grooves (27), and that the locking bolt (11) has projections (20) arranged opposite one another on its outside. Door fitting according to claim 5,
characterized, that each first groove (27) is connected to an adjacent second groove (26) via a rising and a falling flank, so that the rising and falling flanks connecting the individual grooves (27, 26) form a crown-like edge (19), and that a crown-like counter edge (18), which is likewise formed by alternately rising and falling flanks, is arranged opposite the crown-like edge (19) and serves as a stop for the projections (20) of the locking bolt (11) when an adjustment signal occurs,
wherein the flanks of the counter edge (18) are arranged with respect to the flanks of the edge (19) connecting the first and second grooves (27, 26) such that when an adjustment signal occurs and the adjustment signal does not subsequently occur, the projections (20) of the locking bolt of one first or second groove over a flank of the counter edge (18) into a second or first groove. Door fitting according to claim 6,
characterized, that a third groove (28) is formed between the rising and falling flanks of the counter edge (18). Door fitting according to claim 6 or 7,
characterized, that the flanks of the edge (19) connecting the first and second grooves (27, 26) rising in the circumferential direction of the edge (19) are steeper than the falling flanks. Door fitting according to one of claims 6 to 8,
characterized, that the rising and falling flanks of the counter edge (18) are arranged offset to the rising and falling flanks of the edge (19) connecting the first and second grooves (27, 26) in such a way that a falling or rising flank of the counter edge (18) is arranged opposite to a first or second groove (26, 27).
wherein the rising and falling flanks of the counter edge (18) are arranged such that the projections (20) with the locking bolt (11) groove by groove (27,26) are moved in a circumferential direction of the locking bolt (11) by a sequence of adjustment signals . Door fitting according to claim 9,
characterized, that the locking bolt (11) has a thickening (12) of a certain shape at its end facing the locking position, that the thickening (12) of the locking bolt (11) at the transition from the locking position into the unlocking position a narrowing (43) of the door fitting body (1) happens, and that the constriction (43) has a shape such that the thickening (12) of the locking body (11) can only pass the constriction (43) if the projections (20) of the locking bolt (11) are in a second groove (26) are in this case, the thickening (12) with the locking body (11) aligned with the constriction (43). Door fitting according to one of the preceding claims,
characterized, that the locking mechanism (29, 36) can be mechanically coupled to the closing mechanism of the door (2) via a rotary shaft (8),
wherein the locking mechanism comprises a first rotatably mounted disc (36) with an opening (41) through which the rotary shaft (8) is to be positively guided so that a torque for actuation between the rotary shaft (8) and the first disc (36) of the locking mechanism can be transmitted. Door fitting according to claim 11,
characterized, that the first disc (36) has recesses (40) distributed uniformly along its circumference, into which the locking means (11) engages in the locking position and thus blocks rotation of the first disc (36) and the rotary shaft (8) coupled to it, and that a pressure element (44) is resiliently prestressed against the first disk (26) and presses against it, in order thus to exert a rotational resistance when rotating the first disk (36),
wherein the first disc (36) has troughs (38) distributed uniformly along its circumference, which are formed in the width direction of the first disc (36) next to the recesses (40) for the locking means (11) and complementary to the outer shape of the pressure element (44 ) have a trained shape. Door fitting according to one of the preceding claims,
characterized, that the locking mechanism (29, 36) is designed and coupled to the locking mechanism in such a way that, via the locking means (11), it only blocks an actuation of the locking mechanism from an outside of the door (2) and an actuation of the locking mechanism from an inside of the door (2) ago enabled. Door fitting according to claim 12 and claim 13,
characterized, that the locking mechanism comprises a second rotatably mounted disc (29) which has rounded corner portions (35) distributed along its circumference which, when the second disc (29) rotates, cause the locking means (11) to move out of the locking position to such an extent that the locking element (11) is moved out of the corresponding recess (40) of the first disk (36) and the first disk (36) can be turned. Door fitting according to claim 14,
characterized, that the second disc (29) is mechanically coupled to the first disc (36) in such a way that a relative movement with a certain angle of rotation between the first and second discs (36, 29) is possible, that the second disc (29) has an opening (32) through which the rotary shaft (8) is to be guided, that the first and second disks (36, 29) are arranged adjacent to one another, and that the first disc (36) has a projection (42) on a side surface opposite the second disc (29), which is displaceably mounted in a recess (31) formed in the second disc (29), the recess (31) extends in the direction of rotation of the second disc (29) and enables the relative movement between the first and second discs (36, 29). Door fitting according to claim 15,
characterized, that the rotary shaft (8) on the outside of the door is mechanically coupled to a first actuating element (5), and that the second disc (29) on the inside of the door is mechanically coupled directly to a second actuating element (6),
wherein the rotary shaft (8) can only be rotated via the first actuating element (5) if the locking means (11) is not in the locking position, while when the second actuating element (6) is actuated, the second disk (29) initially corresponds to the Longitudinal dimension of the recess (31) formed in the second disc (29) is rotated relative to the first disc (36), as a result of which one of the rounded corner sections (35) of the second disc (29) removes the locking means (11) in the locking position from the Locked position moved out, and wherein by striking one end of the recess (31) formed in the second disc (29) on the projection (42) formed on the first disc (36), the rotational movement of the second disc (29) subsequent to the first disc ( 36) and the rotary shaft (8) is transmitted. Door fitting according to claim 16,
characterized, that the rotary shaft (8) in the region of the opening (41) of the first disc (36) has a polygonal outer shape corresponding to the opening (41) and in the region of the opening (32) of the second disc (29) one of the opening (32) of the second Disc (29) has a corresponding circular outer shape. Door fitting according to one of claims 15 to 17,
characterized, that a pressure element (22) is resiliently biased against the second disk (29) and presses against it, so as to exert a rotational resistance when the second disk (29) is rotated, the second disk (29) having a plurality of troughs distributed uniformly along its circumference ( 30) which have a shape corresponding to the outer shape of the pressure element (22). Door fitting according to one of the preceding claims,
marked by an evaluation circuit (24) which evaluates an input from a user and, when a certain access condition is met by the input from the user, applies an adjustment signal to the adjustment mechanism (10, 50) in order to bring about a movement of the locking means (11) into the unlocking position.
wherein the evaluation circuit (24) applies a first adjustment signal to the adjustment mechanism (10, 50) when the specific access condition is met by the input of the user in order to bring about the movement of the locking means (11) into the unlocking position, the holding mechanism (15, 16) is designed in such a way that it holds the locking means (11) in the unlocked position until a new adjustment signal occurs, and that the evaluation circuit (24), after a certain period of time has elapsed after the first adjustment signal has been applied, sends a second adjustment signal to the adjustment mechanism (10, 50) The holding mechanism (15, 16) is designed in such a way that, owing to the movement of the locking means (11) caused by the adjusting mechanism (10, 50) in the direction of the unlocking position, the locking means (11) for a return movement into the locking position releases.

Images