EP3070236B1 - Emergency unlocking device - Google Patents

Description

The invention relates to an emergency release device having the features of the preamble of the attached claim 1, as shown in WO 2004/113653 A1 is known.

From the WO 00/43619 A1 is a castle with a removable core known.

From the DE 20 2005 006 255 U1 are a power-operated door and a suitable door drive known in which a traction mechanism is used.

From the US 5 698 073 A an automatic door drive for a sectional door is known.

From the US2014 / 0251556 A1 is an automatic door opener for vans known.

Garage door drives, such as the gate operators "ProMatic" or "SupraMatic" available on the market from the Hörmann KG sales company, which are described in detail in the company brochure "Garage and entrance gate drives" of the Hörmann KG sales company with the imprint "Stand 05.2014 / Druck 05.2014 / HF 85945 DE "can have a decoupling device for decoupling a motor drive unit from a door leaf to be driven in the event of a fault, for example during power failures. For example, known gate drives on a guide rail, in which a guide carriage is guided, which is driven by a traction mechanism to move back and forth movable. At this guide carriage can be coupled via a push rod, a door leaf. The guide carriage can be released from the traction mechanism via a decoupling device. The decoupling device has, for example, a lever to which a pull cord connected is. If there is a malfunction, such as a power failure, a person in the garage can pull on the drawstring to decouple the carriage from the traction mechanism. As a result, the carriage can be moved without being held by the traction mechanism along the guide rail. Thus, the door leaf coupled to the door drive carriage can also be moved. For garages or other spaces to be closed by a gate, where the gate is the only access to the room, an emergency release from outside should be possible.

For this purpose, for example, the emergency release of the WO 2004/113653 A1 intended. This emergency release device, which may also be referred to as an emergency release lock, has a base housing which can be secured in a passage opening in the door leaf. Next, a lock cylinder is provided which can be locked in the base housing and can be solved only by key insert thereof. To the lock cylinder, a traction means, for example a steel cable or a drawcord, connected, which can be connected with its other end to the decoupling device. For example, the traction means to the operating lever of the decoupling of one of the known door drives Hörmann KG sales company - see the aforementioned company brochure - connected. In a practical embodiment, the base housing is made of die-cast zinc. In the embodiment of WO 2004/113653 A1 is provided as a lock cylinder, a standard half-cylinder, which is formed from the usual metal materials. In other similar emergency release locks of comparable design on the market, the lock cylinder is also made of die-cast zinc.

The invention has for its object to improve an emergency release of the type mentioned in the preamble of claim 1 such that it works more reliable over a long time.

To solve this problem, an emergency release device is provided with the features of claim 1.

Advantageous embodiments are the subject of the dependent claims.

According to one aspect, the invention provides an emergency unlocking device for a gate comprising a door leaf and a door drive for driving the door leaf, comprising a base housing to be fixed in a passage opening in the door leaf, a lock cylinder accommodated in the base housing and a traction mechanism attached to the lock cylinder, the other end is connectable to a decoupling device for decoupling the door leaf from a drive device of the door drive, wherein the lock cylinder locks in the locked state on the base housing,
wherein the lock cylinder is at least partially formed of a plastic material and wherein on the base housing a separate Zugmittelführung is provided for guiding the traction means.

It is preferred that a securing device for securing an axial movement of the lock cylinder relative to the base housing on the main housing spaced from the ends of the base housing is arranged.

It is preferred that the base housing is tubular or sleeve-shaped and that the Zugmittelführung has a guide sleeve formed of plastic, which is insertable into an inner end of the base housing.

It is preferred that the traction means guide has a provided with a passage opening for the traction means plastic plug.

It is preferred that the plastic plug has a collar area for resting on one end of the base housing and a cylindrical insertion area for clamping insertion into the basic housing and for guiding the traction means.

It is preferred that the traction means guide has a funnel-shaped inner guide to the insertion end, which is widened in a funnel shape and rounded for the traction means.

It is preferred that the Zugmittelführung has an inner shape similar to a trumpet sound.

It is preferred that the traction means is a traction rope formed on the basis of non-metal materials, plastics and / or organic fiber materials.

It is preferred that the lock cylinder has a pocket for the positive reception of a thickened end of the traction means.

It is preferred that the lock cylinder has a substantially cylindrically shaped main body formed of plastic, which is provided with at least one slot for a by key action extendable and retractable latch.

According to a further aspect, the invention relates to a door drive, in which such emergency release device is attached as an accessory.

According to a preferred embodiment, an emergency unlocking lock preferably with a diameter of about 13 mm - bore diameter - is provided as an emergency unlocking device. Preferably, the emergency release lock is made with a lock cylinder made of a high strength plastic. The use of a plastic significantly increases the corrosion resistance of the emergency release lock.

Preferably, the emergency release lock is provided with a cable guide which minimizes sliding friction and prevents wear and tear of the cable.

The cable guide preferably has rotationally symmetrical convex curvatures for as gentle as possible guiding a rope entering the base body.

In contrast, the currently available on the market generic emergency release locks are only partially corrosion resistant. In particular, existing emergency release locks involve the risk that the cable will be destroyed when the emergency release lock is actuated by sharp edges on the housing.

The emergency unlocking device according to the invention or one of its advantageous embodiments provides an emergency unlocking lock that functions reliably and for many years.

Such emergency unlocking devices are usually only in case of incidents, such. during power outages, used. Accordingly, the door drives can be operated for years, without the use of emergency release device comes.

On the other hand, the emergency unlocking devices are mounted in through holes of the door leaf, where they are constantly exposed to weathering in many cases. There is thus the danger that the usually unused for years emergency release locks corrode and then, once they are brought, can not be operated.

If you have to operate a known emergency release lock, then it may continue due to production-related sharp edges cause the rope is damaged or destroyed.

Therefore, previous solutions consisting of die-cast zinc lock cylinders and a zinc die-cast housing, which had sharp edges due to design, were not reliable in all cases.

In a preferred embodiment of the invention, a lock cylinder is made of a high-strength plastic.

In a particularly preferred embodiment, the housing is made of zinc die-cast. Preferably, a cable guide is provided on the housing. The cable guide comprises, for example, a guide element, e.g. in the form of a plastic stopper, which can be attached to the inner - located in the garage - housing end.

The lock cylinder preferably has a main body or lock cylinder housing, which is formed of high-strength plastic. The lock cylinder housing is preferably made of a high strength polymeric material. Examples include high-strength thermoplastics or thermosets. Preferably, the material of the lock cylinder housing is selected from a high strength thermoplastic selected from a group including PA, PPA, PPS, PET and PEEK. To increase strength, the plastic materials may have fiber reinforcements, such as glass fiber reinforcements or carbon fiber reinforcements.

As is generally known in the field of lock cylinders, slots can be provided on the lock cylinder housing, which can be penetrated by locking elements. For example, the locking elements by small platelets - latch plates or closing plates - formed, which can be extended or retracted by key insert. The platelets can also be formed of high-strength plastic. Alternatively, however, the plates could also be made of metal, for example steel.

The traction means may in particular be a rope which is formed from fiber material, preferably plastic fiber material or organic fiber material. But it would also be a steel rope conceivable.

The lock cylinder housing may have a pocket for a thickened end of the traction means at the end facing the garage. This bag is designed so that the thickened end can be received in a form-fitting manner therein. The thickened end could be formed, for example, by a knot in a rope be. The garage facing the end of the lock cylinder, for example, an axial through hole - rope opening - have, which is only slightly larger than the normal diameter of the traction device and opens into the interior of the bag. The pocket may be formed, for example, by a recess in a cylinder jacket wall of the lock cylinder housing. Accordingly, the still unthickened end of a rope could be passed through the axial passage opening and then formed a node, which is received in the bag.

Fig. 1

eine perspektivische Explosionsansicht einer Ausführungsform einer Notentriegelungsvorrichtung in Form eines Notentriegelungsschlosses zum Notentriegeln eines Torantriebes von außen;

Fig. 2

eine perspektivische Ansicht der zusammengesetzten Notentriegelungsvorrichtung;

Fig. 3

eine Schnittansicht durch die Notentriegelungsvorrichtung bei Anwendung an einem Torblatt, und

Fig.4

eine Schnittansicht durch die Notentriegelungsvorrichtung ohne Zugmittel dargestellt.

An embodiment will be explained in more detail below with reference to the accompanying drawings. It shows:

Fig. 1

an exploded perspective view of an embodiment of an emergency release device in the form of an emergency release lock for emergency unlocking a door drive from the outside;

Fig. 2

a perspective view of the composite emergency release device;

Fig. 3

a sectional view through the emergency unlocking device when applied to a door leaf, and

Figure 4

a sectional view through the emergency release device without traction means shown.

In the Fig. 1 to 4 an emergency unlocking device 10 is shown, which is designed for emergency unlocking of a door drive, not shown in case of failure, such as power outages from the outside. For this purpose, the emergency unlocking device 10 is designed as an emergency unlocking lock 12, so that actuation from the outside is possible only by using a key 14.

The emergency unlocking device 10 has a base housing 16, a lock cylinder 18 and a pulling means 20.

The base housing 16 has a substantially tubular or tubular shape. For this purpose, the base housing 16 is provided with a sleeve body 22, which on two sides flats 24 - in particular designed as a tool attack for engaging a wrench - and has an axially continuous pipe opening 26 for passing the traction means 20.

A securing device 72 arranged on the base housing 16 at a distance from the ends of the base housing 16 for securing an axial movement of the lock cylinder 18 against the base housing 16 is formed by a groove 74 on the lock cylinder 18 and by cams 76 on the base housing 16. The cams 76 on the base housing 16 are spaced from the ends of the base housing 16 such that contact of the pulling means 20 with the cams 76 at any time during the normal use of emergency release device is possible.

When closed, the cams 76 are engaged with the groove 74 such that axial movement of the lock cylinder 18 in the body 16 is prevented. By turning the lock cylinder 18 by 90 °, the engagement between the cam 76 and the groove 74 can be solved and the lock cylinder 18 are pulled out of the base housing 16 in the axial direction.

At an end to be arranged on the outside of the sleeve body 22, a flange-like thickening 28 is provided. In the interior of the pipe opening 26 abutment 30 are provided for later to be described locking elements of the lock cylinder 18. The sleeve body 22 has at least at the end region of an end to be arranged inside an external thread 32 for a fastening nut 34. Like from the Fig. 1 and 3 it can be seen, the base housing 16 is inserted into a through hole formed as a through hole 36 of a door leaf 38 from the outside until the provided with the external thread 32 end of the sleeve body 22 protrudes on the inside of the door leaf 38 from the through hole 36. On this outstanding end of a washer 40 and then the fastening nut 34 is placed. The flats 24 can serve as a tool attack, so as to secure the sleeve body 22 against rotation during unscrewing the fastening nut 34.

Next, a Zugmittelführung 48 is provided. The traction mechanism 48 has a plastic plug 50. The outer contour of the plastic stopper 50 has a cylindrical insertion region 52 and a cap region or collar region 54. The insertion region 52 is inserted into the inner end of the tube opening 26 after attachment of the sleeve body 22, so that the flange-like cap region or collar region 54 rests on the edge of the tube opening 26.

As can be seen in particular from the FIGS. 2 and 3 shows, an inner contour serving for guiding the traction means 20 is provided, which widens in a funnel shape from the insertion region 52 towards the collar region 54. As a result, a funnel-shaped inner guide 53 is formed.

The inner guide 53 has a relative to the central axis of the Zugmittelführung 48 rotationally symmetrical guide surface formed, which is seen in the axial sectional view formed inwardly to the central axis convexly curved. Thus, the inner guide 53 is formed with a rounding 55. The rounding 55 may, for example, be circular in section with a comparatively large radius. The guide surface is formed as smooth as possible in order to minimize the sliding friction. The funnel shape, the rounding 55 and the rotational symmetry act for a possible slippage introduction of the traction device when pulling out the lock cylinder 18, no matter how the traction means 20 runs in the interior of the garage before.

Instead of plastic, the traction mechanism 48 may also consist of other materials, including metal. Although a separate from the base housing 16 embodiment in terms of ease of manufacture and assembly is preferred, the Zugmittelführung 48 may be formed integrally with the above-described inner contour of the base housing 16.

The traction means is, for example, a rope 42 made of synthetic fibers. One end of the rope 42 is connected to a decoupling device of the door drive not shown here, which drives the door leaf 38. The Decoupling device is formed in a known manner such that it can be decoupled by a train on the traction means 20 in order to move the door leaf 38 without counter-locking by the motor drive unit of the door drive can. The other end 44 of the rope shown in the figures is passed through the tube opening 26 and fastened to the lock cylinder 18.

The lock cylinder 18 is essentially formed from a plastic material 56. In particular, the lock cylinder 18 has a lock cylinder housing 58, which is formed from plastic material 56. The lock cylinder housing 58 is substantially cylindrical in shape and has lateral openings in the form of slots 60 or the like for locking plate 62, which act as locking elements or latches. The locking plate 62 and the abutment 30 are matched. The lock cylinder 18 is designed such that by inserting and rotating the key 14, the locking plates 62 extend radially outwards or retract inwards when the key 14 is rotated in the opposite direction. To support a against rotation positively secured slide is provided between the base housing 16 and the lock cylinder 18.

The lock cylinder housing 58 further has a pocket 64 for a thickening 66 at the end 44 of the cable 42. The thickening 66 is formed for example by a node on the cable 42.

At the interior of the garage to be addressed in the end of the lock cylinder 18, a cable opening 70 is provided, whose diameter is only slightly larger than the outer diameter of the cable 42. At the edge of this rope opening 70, the thickening 66, in particular the node 68, can be supported. The pocket 64 is formed, for example, by recesses on the cylinder wall of the lock cylinder housing 58. <B> LIST OF REFERENCES: </ b> 10 emergency unlocking 12 Notentriegelungsschloss 14 key 16 Headers 18 lock cylinder 20 traction means 22 sleeve body 24 flattening 26 tube opening 28 thickening 30 thrust bearing 32 external thread 34 fixing nut 36 Through opening 38 door leaf 40 washer 42 rope 44 The End 48 transmission means 50 Plastic plugs 52 insertion 53 funnel-shaped inner guide 54 collar region 55 rounding off 56 Plastic material 58 Lock cylinder housing 60 slot 62 closing plate 64 bag 66 thickening 68 node 70 rope opening 74 groove 72 safety device 76 cam

Claims (10)

1. Emergency unlocking device (10) for a gate having a gate leaf (38) and a gate drive for driving the gate leaf (38), comprising a basic housing (16) to be fixed in a passage opening (36) in the gate leaf (38), a lock cylinder (18) received in the basic housing (16), and a traction mechanism (20) fixed to the lock cylinder (18) and connectible to a decoupling device for decoupling the gate leaf (38) from a driving device of the door drive on the other end thereof, wherein the lock cylinder (18) is locked to the basic housing (16) in the locked state,
   characterized in that the lock cylinder (18) is at least partially formed from a synthetic material (56) and that a separate traction mechanism guide (48) for guiding the traction mechanism (20) is provided on the basic housing (16).
2. Emergency unlocking device (10) according to claim 1,
   characterized in that a securing device (72) for securing the lock cylinder (18) against an axial movement relative to the basic housing (16) is disposed on the basic housing (16) in spaced manner from the ends of the basic housing (16).
3. Emergency unlocking device (10) according to one of the preceding claims, characterized in that the basic housing (16) is tubular or sleeve-shaped and that the traction mechanism guide (48) comprises a guide sleeve from synthetic material that can be inserted into an inner end of the basic housing (16).
4. Emergency unlocking device (10) according to one of the preceding claims, characterized in that the traction mechanism guide (48) comprises a plastic material plug (50) provided with a passage opening (36) for the traction mechanism (20).
5. Emergency unlocking device (10) according to claim 4,
   characterized in that the plastic material plug (50) has a collar portion (54) to rest on one end of the basic housing (16), and a cylindrical insertion portion (52) for the clamping insertion into the basic housing (16) and for guiding the traction mechanism (20).
6. Emergency unlocking device (10) according to one of the preceding claims, characterized in that the traction mechanism guide (48) comprises an inner guide (53) which expands in a funnel-shaped manner towards the insertion end and which has a rounding (55) for the traction mechanism (20).
7. Emergency unlocking device (10) according to one of the preceding claims, characterized in that the traction mechanism (20) is a traction cable (42) formed on the basis of non-metal materials, synthetic materials and/or organic fiber materials.
8. Emergency unlocking device (10) according to one of the preceding claims, characterized in that the lock cylinder (18) comprises a pocket (64) for receiving a thickened end (44) of the traction mechanism (20) in a form-fit manner.
9. Emergency unlocking device (10) according to one of the preceding claims, characterized in that the lock cylinder (18) comprises a main body substantially formed in a cylindrical shape from a synthetic material and provided with at least one slot (60) for a bolt that can extend and retract by the action of a key.
10. Gate drive (10), comprising an emergency unlocking device (10) according to one of the preceding claims as an accessory.

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