EP0073964B1 - Door with a locking device - Google Patents

Abstract

A latch assembly for use in combination with slidable doors is disclosed. A rotatable disk is connected to the door so that the plane of the disk is perpendicular to the door and parallel to the direction of door movement. A lock bolt which projects from the door jam is adapted to engage a slot in the disk as the door closes, causing the disk to rotate. As the disk rotates, it slides with respect to a spring loaded latch bolt until the bolt slides through a second slot in the disk, when the door is fully closed. Efforts to effectuate a forced entry of the door cause the resulting forces to be passed primarily between the disk and the lock bolt, while the latch bolt's primary function is to prevent rotation of the disk. Thus, an attempted forced entry will not cause excessive forces to be placed on the latch bolt. The latch bolt is slidably connected to a conventional manually operated garage door handle assembly including a lock.

Description

The invention relates to a gate with the features of the preamble of claim 1.

It is known to provide gates of the type in question here with a lock which is actuated by hand with the aid of a swivel lever or a rotary handle and thereby controls locking devices located in the side region of the gate via lock rods (DE-A-2 919143). It is also known to equip these locking devices with spring-loaded bolt latches and the like, so that one can bring the lock preparatively into the closed position with the door still open and only in the ensuing period does the actual closing of the gate only take place by moving the door leaf into the closed position. Which takes place under spring pressure in the closed position. The bolt latches acted upon by spring pressure into the closed position temporarily move back into their open position.

Gates of the type in question here, with which relatively large bushings are closed, necessarily and in part also have a relatively large amount of play in the guides between the frame frame and the door leaf for reasons of a construction which is not too complex. This applies in particular to doors with door leaves that can be moved overhead. Accordingly, the door leaf can be moved by a corresponding amount of force in a certain order of magnitude, in particular also transversely to its guide direction in a certain order of magnitude, so that there is a risk that the door leaf will be released from the lock even when the lock is in the closed position. Correspondingly large displacement movements of the door leaf can be achieved, in particular, by the rhythmic application of force and a corresponding rocking of the door leaf movement. Even with bolt latches or latches of correspondingly large or long dimensions, depending on the construction, there is also the risk that force components in the direction of the spring travel of the latches occur in the rejection of the force acting on the door leaf, which components can yield in the direction of the open position.

It is an object of the invention to design a locking device of the type mentioned at the outset such that, despite simple design, assembly and handling, the door leaf cannot be released from the lock by external attack by unauthorized persons.

This is achieved according to the invention by the subject matter of claim 1.

According to the invention, the cutter function and the actual interlocking locking function are separated, the cutter function being taken over by a cutter bolt and the locking function being carried out by a locking bolt which cooperate with a common locking member. As a result, forces exerted on the door leaf in the closed state can be kept away from the cutter device, so that the risk of the cutter member receding into the open position is avoided.

In the closed position of the gate, the locking member, which is designed as a rotary bolt or rotatable locking disk, is rotated in engagement with the locking bolt in such a way that it is held in a form-fitting manner against sliding on the engagement. In this rotational position, the rotary latch is held by engagement of the spring-loaded cutter bolt. When the lock is opened by moving the lever handle or rotary handle by hand, the cutter bolt is removed from engagement with the rotary bolt or the locking disk against the force of the spring acting on it. In the course of the opening movement of the door leaf, the rotary bolt or the locking washer is rotated by the locking bolt held in the frame to such an extent that the bolt can slide out of its recess in the rotary bolt. In this position, the rotary latch or the locking disk, which is correspondingly fraught with friction, remains until the door leaf is moved back into the closed position, so that the locking bolt again comes into the recess intended for it in the course of the closing movement. When the closed position has been reached, the snapper bolt can be inserted into the recess in the rotary bolt or the locking plate which is intended for it by appropriately closing the lock.

By training as a snapper, the lock can be prepared in the open position of the door leaf preparatively in the closed position, whereupon the door leaf can be moved into the closed position after any time and is properly locked there without the lock having to be operated. When the lock is turned into the closed position, the cutter bolt is released accordingly, so that it is acted upon by the force of its spring in its engagement position with the recess of the rotary latch intended for it. However, when the door leaf is not in the closed position, the rotary latch is in a rotational position in which the cutter bolt cannot slide into its recess. Rather, it lies in the adjacent area of its recess on the rotary bolt or the locking washer and only engages in its recess when the locking bolt has correspondingly rotated the locking bolt or the locking washer by closing the gate.

In a preferred embodiment, the rotary bolt or the locking disk is provided with a locking point in the form of a recess, into which the cutter bolt engages in the open position of the rotating bolt or the locking disk. The rotary bolt or the locking disc is thus in its open position due to the spring-loaded Snapper bolt held. When the locking bolt is attacked by closing the gate, the rotary bolt or the locking disc is rotated against the force threshold that is necessary to push the snapper bolt out of the locking point. The tip of the cutter bolt and the locking point are rounded off accordingly, so that this force threshold is determined accordingly. Through this preferred embodiment, the force of the cotter pin spring is used simultaneously for the engagement of the cutter and for the maintenance of the open, rotational position of the rotary bolt or the locking disk.

In order to achieve the most favorable installation conditions, the locking device can be installed either on the left side or on the right side of the door leaf. Various training courses are provided for this purpose in duplicate. In this case in particular, it is advisable to design the rotary bolt as a locking washer.

Gates of the type in question are often provided with an electric motor drive, which prevents unauthorized opening of the gate when switched off in the closed position. In this case, the lock arranged on the door leaf with the locking device is not required. So far, in such a case, at least the locking device has been removed so as not to cause maloperation if the lock is inadvertently locked by hand. If the electric motor drive failed, the lock or the locking device had to be installed again in order to be able to lock the door by hand. This is not only particularly cumbersome, experience has shown that parts of the locking device that have been removed are lost. In a preferred embodiment, the locking device designed according to the invention is therefore designed in the simplest manner so that the cutter bolt is always held in its open position. For this purpose, only a small plastic sleeve is required, which is used in the case of an electric motor drive and is removed in the case of a manual drive.

Furthermore, care can be taken that the electric motor drive is disengaged as soon as the handle of the lock is moved into the open position by hand. For this purpose, a holder for a cable pull is provided on the locking device designed according to the invention.

• Figur 1 eine perspektivische Innenansicht eines Sektionaltores im Schließzustand als Anwendungsbeispiel ;
• Figuren 2 und 3 zwei perspektivische Teilansichten des Ausführungsbeispieles ;
• Figur 4 eine Seitenansicht einer Verriegelungsscheibe von der Eingriffseite des Schnepperbolzens her gesehen ;
• Figur 5 eine Teilschnitterstellung nach der Linie IV-IV in Figur 3 ;
• Figur 6 eine Seitenansicht des Schnepperbolzens.

Further developments of the invention result from the subclaims in connection with the embodiment shown in the drawing, to which particular reference is made and the following description of which explains the invention in more detail. Show it :

• Figure 1 is a perspective interior view of a sectional door in the closed state as an application example;
• Figures 2 and 3 two partial perspective views of the embodiment;
• Figure 4 is a side view of a locking washer seen from the engaging side of the cutter bolt;
• Figure 5 is a partial section along the line IV-IV in Figure 3;
• Figure 6 is a side view of the cutter bolt.

• Wie aus den Figuren 2 und 3 ersichtlich, ist das Ausführungsbeispiel im Zusammenhang mit einem Sektional-Tor als besonders bevorzugter Einsatzbereich wiedergegeben. Der insgesamt mit 1 bezeichnete Zargenrahmen umfaßt seitliche Zargenholme 2, zwischen welchen sich im Schließzustand das insgesamt mit 3 bezeichnete Torblatt erstreckt, welches aus einer Vielzahl hintereinander angeordneter und aneinander angelenkter Paneele 4 besteht. Die Paneele sind in bekannter Weise mit Rollen versehen, die in Führungsschienen eingreifen, die sich über den Bewegungsbereich des Tores hinweg erstrecken. Die Führungsschienen umfassen zu diesem Zwecke einen vertikalen Abschnitt im Bereich der seitlichen Zargenholme, an welchen mit bogenförmigen Übergang horizontale Bereiche angeschlossen sind, die sich beispielsweise parallel zu einer entsprechend angeordneten Gargendecke erstrecken.

To illustrate, for example, the area of application of the door lock in question, FIG. 1 shows a perspective view of a sectional door leaf in the closed state, which consists of a number of horizontally extending and sequentially hinged panels 4. Rollers 8 are provided in the articulated area between the panels, which engage in U-shaped hollow profile guide rails 2 provided on both sides of the door leaf. A lock 5 provided on the door leaf is explained in more detail below:

• As can be seen from FIGS. 2 and 3, the exemplary embodiment in connection with a sectional gate is shown as a particularly preferred area of use. The frame frame designated overall by 1 comprises side frame spars 2, between which the door leaf designated overall by 3 extends in the closed state and consists of a plurality of panels 4 arranged one behind the other and articulated to one another. The panels are provided in a known manner with rollers which engage in guide rails which extend over the range of movement of the door. For this purpose, the guide rails comprise a vertical section in the area of the side frame spars, to which horizontal areas are connected with an arcuate transition, which, for example, extend parallel to a correspondingly arranged cooking top.

On the inside of the panel 4 shown, a lock designated 5 overall is attached, to which a turning handle 6 is assigned. The rotary movement of the rotary handle 6 is converted into a linear movement in the longitudinal direction of a lock rod 7, which transmits this movement triggered by hand to a locking device designated overall by 8.

The locking device 8 comprises a bracket 9 which is screwed onto the lateral inner edge region of the panel shown. The locking device further comprises a locking disk 10, which is assigned a cutter bolt 11 and a locking bolt 12. The locking disc 10 is mounted with its axis of rotation 13 in the console, in such a way that the axis of rotation 13 extends in a plane parallel to the inside of the panel 4 and perpendicular to the direction of the guide rails or the direction of movement of the door leaf. The cutter bolt 11 is mounted in a longitudinal displacement guide 17 formed in the bracket 9 so as to be movable parallel to the axis of rotation 13. As part of the longitudinal displacement guide is a housing, not shown Se is provided for receiving a spring, also not shown, which is arranged between an end housing projection and an end bolt projection facing it in such a way that it acts on the cutter bolt 11 in the direction of the locking disk 10. The locking bolt 12 is fastened to the associated side frame spar 2 with the aid of any device.

In the locking position shown, the locking pin 12 engages in a recess 14 which is provided in the locking disk 10 with a radially outward opening 16. Through this opening 16, the locking bolt can enter or slide out of the recess 14 when the locking disk reaches the opening twisting direction, not shown here.

In the locking position shown, the cutter bolt 11 engages under the force of its spring in a recess 15, which is also provided in the locking disk 10. Thus, the locking plate 10 is secured in the closed position against rotation in a rotational position in which the locking bolt 12 can not emerge from the recess 14.

When the rotary handle 6 is actuated in the open position, the cutter bolt 11 is pulled out of the engagement with the recess 15 against the force of its spring by the closing rod 7, so that the locking disk 10 can rotate when the door leaf 3 moves upwards into the open position becomes. The locking washer 10 mounted on the panel 9 on the panel 4 of the door leaf 3 rotates until the locking bolt 12, which is held in a fixed manner on the frame frame and thus remains stationary, can emerge from the recess 14. In this rotational position, which corresponds to the open position of the locking device, the locking disk 10 remains stationary due to appropriate friction.

If the lock 5 is moved back into the closed position after initiating the opening movement of the door leaf after the sense and purpose of a locking with a snapper effect, the lock rod 7 moves to the right and releases the snapper pin 11. The cutter bolt 11 strikes the locking disk 10 under the force of its spring, specifically outside the area of the recess 15 provided for it. The lock rod 7 is displaced relative to the cutter bolt 11 by an empty path 23, which allows the cutter bolt 11 to corresponding rotation of the locking plate 10 to engage in the recess 15 without the lock rod 7 having to be moved.

The point at which the spring-loaded cutter bolt 11 strikes the locking disk 10 rotated in the open position is designed as a locking point 18, as can be seen in FIGS. 4 and 5. Thereafter, the rest point is formed as a trough into which the tip of the cutter bolt 11 engages under the force of the cutter spring assigned to it. In this way, the locking disk 10 is additionally held in the rotational position, which corresponds to the open position of the lock and in which the locking bolt 12 can enter the recess 14 through the opening 16 when the door leaf is moved into the closed position. With further movement of the door leaf in the closed position, the locking plate 10 is rotated by the locking bolt 12, so that the cutter bolt is lifted against the force of its spring from the locking point until the closed rotational position of the locking disc 10 is reached, in which the cutter bolt 11 in the for certain recess 15 engages him.

The locking bolt 12 is provided at its end facing the door leaf 3 with a head 19 which is wider than the shaft of the bolt at the point with which it engages in the recess 14. The diameter of the opening 14 is thus kept smaller than the head 19, so that the locking plate 10 cannot be pulled off the locking bolt by a lateral movement directed parallel to the door leaf plane. Thus, in the closed position, locking is ensured not only against movements of the door leaf 3 in the direction of the guide rails, but also against movement transverse to it in the direction of the roller axes.

It is therefore of particular advantage that locking must only be provided in one side region of the door leaf 3, whereas locking devices are generally provided on both sides in known designs of locking devices and gates of the type in question here.

In a particularly advantageous manner in terms of assembly technology, parts of the locking device are designed such that they can be attached either in the right or in the left side region of the door leaf 3. In the present case, the console 9 is provided with two bores for receiving the axis of rotation 13 of the locking disk 10, which are symmetrically spaced with respect to the longitudinal displacement guide 17 for the cutter bolt 11. The locking plate 10 has two recesses 14 and 14 'for receiving the locking bolt 12 and two locking points 18 and 18', which are arranged in pairs mirror-symmetrically to a plane which in the axis of rotation 13 of the locking plate 10 and in the middle of the recess 15 for the Cutter bolt 11 is located, as can be seen in FIG. 4.

From the sectional view according to FIG. 5 it can be seen that the latching point 18 is designed as a flat trough into which the rounded tip 26 of the snapper pin 11 shown in FIG. 6 engages when it rests spring-loaded on the locking disk 10 in preparation for engagement in the recess 15 . These conditions make it easy to see that when the bolt is turned disc 10 through the locking bolt 12 out of this position, the tip 26 of the cutter bolt 11 emerges from the rest point while tensioning the spring.

6 shows a groove 24 into which a spring washer 20 can be inserted, as shown in FIG. 2. This spring washer limits the movement of the cutter bolt 11 under the force of the spring assigned to it in the recess 15 such that the cylindrical section 25 of the cutter bolt tip rests on the likewise cylindrical walls of the recess 15. Twisting forces acting on the locking disk 10 are therefore unable to exert a force component on the cutter bolt 11 which lies in the direction of the spring movement.

If the cutter bolt 11 is pulled out of its closed position shown in FIG. 2 by compressing the spring acting on it, there is a distance between the disk 20 and the end face of the longitudinal displacement guide 17 of the console 9 facing this. A spacer (not shown) can be located at this distance. for example in the form of a longitudinally slotted plastic sleeve, so that even when the rotary handle 6 is turned back into the closed position, the cutter bolt 11 cannot get out of its open position. The locking device is thus deactivated, which corresponds to operation with an electric motor drive. If, on the other hand, the gate is to be operated by hand without an electric motor drive, this spacer is simply removed, as a result of which the cutter bolt 11 and thus the locking device takes on the function described above.

On the console 9 - for right and left operation mirror-symmetrical - projections 21 are provided which serve to hold a cable pull. The core of the cable pull is connected to the lock rod. If the electric drive energy fails, a coupling between the door leaf 3 and the electric drive (not shown) can be released by turning the rotary handle 6 to the open position with the help of this cable, so that the door leaf 3 can be moved freely by hand and not by the drive device which is at a standstill is blocked.

As can be seen in FIG. 4, the opening 16 is widening from the recess 14 to the periphery of the locking disk (10) and is formed in an inclined position to the radial direction in order to facilitate the insertion or gripping of the locking bolt 12.

Claims (10)

1. A door having a surrounding frame (1) and a single and multi-part door leaf (3), in particular a sectional door leaf which is movable overhead and is composed of a plurality of panels (4) which are articulated one onto the other in succession and which are mounted, by means of rollers, in lateral guide rails each of which comprises a vertical portion extending parallel to the lateral frame member and a horizontal portion connected thereto by an arc, the door being able to be locked in relation to the surrounding frame in the closed position by means of a manually actuated lock unit (5) which has a spring locking device (8) in the region of the lateral frame member, characterised by a rotary catch (10), the pivot (13) of which is disposed transversely to the longitudinal direction of the lateral frame members (2) and which has at least two recesses (14, 15), in one (15) of which a spring bolt (11) engages when the door leaf (3) is in the closed position, and the other (14) of which is open radially of the pivot (13), which radial opening (16) is aligned, when the rotary catch (10) is in the open position of rotation, with a locking bolt (12) which is held in this recess (14), secure against sliding out, in the closed position of rotation.

2. A door as claimed in Claim 1. characterised in that the rotary catch is constructed in the form of a locking disc (10) and that the spring bolt (11) and the locking bolt (12) extend substantially parallel to the pivot (13).

3. A door as claimed in Claim 2, characterised in that the pivot (13) of the locking disc (10) is mounted in a bracket (9) which is secured in a lateral edge region of the door leaf (3), in which also a longitudinal displacement guide (17) for the spring bolt (11) is constructed, which guide comprises a housing for a spring which acts on the spring bolt (11) in the direction of displacement towards the locking disc (10).

4. A door as claimed in one of the preceding Claims, characterised in that the rotary catch or the locking disc (10) comprises, at a distance from the recess (15) to receive the spring bolt (11) in the direction of the path of rotation, a detent position (18) for the spring bolt (11) released in preparation for the engagement.

5. A door as claimed in one of the preceding Claims, characterised in that the locking bolt (12), secured to a lateral frame member (2), of the rotary catch provided only in one of the two lateral regions of the door leaf (3) has a head (19) of widened construction behind which the edges of the associated recess (14) engage in the closed position.

6. A door as claimed in one of the Claims 4 or 5, characterised in that, to enable installation selectively at the right-hand or left-hand inner region of the door leaf, the locking disc (10) is provided with two recesses (14, 14') to receive the appropriately disposed locking bolt (12), and two detent positions (18, 18') are provided disposed in mirror symmetry in the direction of rotation to the recess (15) to receive the spring bolt (11).

7. A door as claimed in one of the Claims 3 to 5, characterised in that, to enable installation selectively at the right-hand or left-hand inner region of the door leaf, the locking disc is provided with two recesses to receive the spring bolt, together with associated detent positions.

8. A door as claimed in one of the Claims 3 to 7, characterised in that, to enable installation selectively at the right-hand or in the left-hand inner region of the door leaf, the bracket (9) is provided with two bearing positions for the pivot (13) of the locking disc (1).

9. A door as claimed in one of the preceding Claims with selective operation by hand or by means of an electric-motor drive, characterised in that disposed on the shank of the spring bolt (11) is a projection - for example a ring (20) which can be pushed on resiliently - between which and the spring bolt guide (17) of the bracket (9) a space is kept free in the unlocking position, in which space a spacer. In particular a longitudinally slit sleeve of resilient plastics material, is inserted in the case of operation by an electric motor.

10. A door as claimed in Claim 9, characterised in that disposed on the bracket (9) is a holding means (21) for a cable line, the cable core of which is connected to the lock rod (7) actuating the spring bolt (11).

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