EP2186946A2 - Safety assembly for a closed or lockable component, in particular for a shaft lid - Google Patents

Abstract

The safety arrangement has a locking device with an actuating element. A rotation of the locking device is moved between the locking position and releasing position in back and forth manner. A removable lock and an access authorization monitoring device are fitted to block closing position of the lock.

Description

The invention relates to a securing arrangement for a closable or lockable component, in particular for a manhole cover, which is provided with a locking device which contains an actuating element, by the movement, in particular rotation, the locking device between a locking position and a release position of the component movable back and forth is.

The manhole cover may be the upper manhole cover flush with the environment, or a lower cover located below the actual manhole cover to prevent unauthorized access to the manhole, e.g. may be housed electrical or electronic devices or devices of other kind, to which unauthorized persons may not have access.

The manhole cover, which is preferably made of concrete or cast iron, preferably has a rotary latch, which can engage under a projection of the shaft edge by turning an associated actuating element.

The manhole cover, which is preferably made of steel, has on its underside a locking device, which may consist of a linkage, which can be advanced by turning an actuating element, which is accessible from the top of the lower lid, in shank rim receptacles to the lower lid to lock. By turning the Actuator in the opposite direction, the rods of the locking device are pulled back in the direction of the actuating element, whereby the manhole cover is free for its removal from the shaft.

The actuator may e.g. a rotatable pin connected to the locking device or its linkage, e.g. may have a hexagon socket opening, so that the actuating element can be rotated after insertion of a correspondingly shaped tool.

Since such a hex tool or similar tool with which the actuator is rotatable, readily available to an unauthorized person who wishes to gain access to the shaft, the access to the actuator can be locked by an insertable lock above of the actuating element, for example can be used in a sleeve-shaped receptacle and must be removed before turning the actuator. In practice, it can not be ruled out that a fitter forgets to work in the shaft to lock the lid or lower lid before he attaches the security lock.

In particular, when the shaft is in the region of a road, it may also happen that the locking device automatically moves due to the sudden loading of the manhole cover and the associated vibrations in the release position, so that in this case the shaft through the manhole cover or manhole cover is not secured.

Another problem is that it can not be ruled out that an unauthorized person may come into possession of the key of the inserted lock which obstructs access to the actuating element and therefore can remove the lock and subsequently turn the actuating element of the locking device into the open position.

The present invention has for its object to improve the safety of a shaft against unauthorized access to the shaft interior.

This object is achieved by the features of claim 1.

Advantageous embodiments of the invention are characterized in the subclaims.

The invention provides a safety arrangement which has a removable lock or lock, which is preferably only lockable to block access to the actuating element of the locking device when the actuating element is rotated to the position corresponding to the locking position.

The actuator may be a pin or bolt with a hexagon socket, which is connected to the linkage of the locking device so that the elements of the locking device can be retracted either in receiving pockets of the shaft edge or manhole frame or retracted from these. It is understood that the actuating element can also be rotated by a different type of tool.

In addition, the invention provides an access authorization checker which can block the lock's closed position and only release it when it has received associated conditional access data. The access authorization checking device contains a transmitting unit, a receiving and evaluating unit and a locking and releasing unit for the lock.

The transmitting unit carries the person authorized to open the shaft and is formed, for example, by a chip transponder, as is widely used, for example, for the remote control of a motor vehicle lock. Of the Chip transponder sends its stored signals to a receiving and evaluation unit, which advantageously has an antenna and can be arranged in a housing under the manhole cover. The evaluation unit checks whether it has received the correct access authorization data and, in this case, sends a signal to a blocking and release unit which has a feed-forward and retractable, for example pin-like element.

The blocking and release unit can move the pin-like element forward or backward, for example by means of a solenoid, or by means of an electric spindle drive. For this every suitable means comes into consideration.

The blocking and releasing unit is arranged at such a position that the pin-like element protrudes in the advanced state in the movement path of the bolt of the lock. Preferably, the blocking and releasing unit is mounted on a non-rotatably mounted housing into which the lock is insertable.

In the case of the safety arrangement, if the actuating element of the locking device is preferably moved into the locking position and the lock is inserted in the associated housing and locked therein, the authorized user sends with his transmission unit a blocking signal to the receiving and evaluating unit, which in turn sends a signal to the Blocking and release unit continues, which then advances the pin-like element in the movement path of the bolt (from the Verrieglungs- in the open position). This can also be done purely mechanically by spring action of the pin. Even if an unauthorized person were to be in possession of a key to the lock, it would not be able to move the lock of the lock to the open position as this is surely prevented by the pin of the lock and release unit. The pin has such a strength that it can neither be torn off nor deformed by the bolt so that the path of movement of the bolt would be free.

By contrast, a person entitled to access activates the blocking and release unit via the receiving and evaluating unit by sending the access authorization data, as a result of which the pen-like element is pulled back out of the path of movement of the bolt of the lock.

Thus, unauthorized access to the manhole is almost certainly excluded.

It is further proposed that the actuating element, with which the locking device can be actuated, is surrounded by a housing into which the lock can be inserted. This housing may have a closed peripheral wall, and thereby preferably be formed circular cylindrical, wherein the lock (in the case of a manhole cover or manhole cover) is inserted from above into the housing.

It is further proposed that the lock can be inserted into the housing only in a predetermined circumferential length such that the lock can be locked in the housing. This is achieved in that the housing has an inwardly projecting projection, which may be a molded-on projection or a fixed cylindrical pin, and that the lock has an elongated, in the insertion direction to the front edge continuous recess into which the projection or pin can occur. The elongated recess, which may also be referred to as a slot, should be slightly wider than the projection or pin so that it can enter smoothly. The slot runs parallel to the longitudinal axis of the lock.

Further, the arrangement should be made so that the elongated recess or the slot on the inside of the housing of the latch, preferably a rotary latch of the lock, is covered when the rotary latch is rotated by the key of the lock in the locked position.

In addition, it is provided that the slot has such an extent that the pin is at fully inserted into the housing position of the lock behind (in the case of a manhole cover or manhole cover: over) the rotary latch. Thus, when the rotary latch is closed, it secures the projection or pin located in the upper end portion of the slot so that the lock can not be removed from the housing unless previously unlocked.

In particular, when the lockable component is a manhole cover, is advantageously further provided that the actuator is rotatably connected to a component having a recess into which a pin can enter, which is attached to the lock and in the direction of insertion of the lock of this project. The component connected to the actuating element is preferably a flat ring, which extends outward from the actuating element and is attached, preferably welded, to the actuating element in a suitable manner. The attached to the lock pin or rod-shaped body preferably extends in the axial direction of the castle.

It is further proposed that the recess in the annular element connected to the actuating element is aligned with the pin when the actuating element is in the rotational position in which the locking device is in the locking position. The pin has a length such that it protrudes into the recess in the fully inserted state of the castle.

This design has the consequence that the lock can only be shut off when the locking device is in the locking position, otherwise the pin impinges on the component connected to the actuating element, with the result that the projection or pin attached to the housing is not in the upper end position of the slot above the range of motion the lock of the lock is located. However, when the locking device is in the locking position, the latch of the lock can be moved to the closed position, since the pin projects into the recess of the ring, and the projection or pin does not block the closing movement of the lock. In this state, the pin engaging in the recess also blocks rotation of the actuator to the release position, which could otherwise be caused by vibration, etc. The recess is adapted to the cross-sectional shape of the pin so that it can enter smoothly into the recess, but expediently no significant lateral play remains. The actuating element is thus held non-rotatable, whereby the locking device is fixed substantially immovable.

If the lockable component is a manhole cover which closes the shaft flush with the environment, the arrangement is preferably made such that the latch is in its open position in the entry path of the pin when the lock is inserted into the housing, wherein the pin on protrudes from a corresponding point from the bottom of the castle. The pin has a length such that it blocks the complete insertion of the lock into the housing in this case, whereby the lock is not lockable. But when the latch is in the locking position, it is pivoted out of the entry path of the pin, so that the pin can be used on the latch along with the lock in the end position, in which the lock is lockable. The housing can be covered by a detachable cap over the lock, so that no foreign matter and no water can enter the housing.

It is emphasized that the fuse arrangement according to the invention is not only suitable for a manhole cover or manhole cover, but can also be applied to other lockable and removable or hinged cover devices such as flaps, covers or doors.

Figur 1

ein Beispiel einer unterhalb eines Schachtunterdeckels angebrachten Verriegelungseinrichtung in der geöffneten Stellung;

Figur 2

die Verriegelungseinrichtung gemäß Figur 1 in der Verriegelungs- stellung;

Figuren 3 und 4

zwei verschiedene Ansichten eines bei der Sicherungsanordnung lösbar einzusetzenden Schlosses, im unverschlossenen Zustand;

Figuren 5 und 6

das Schloss gemäß den Figuren 3 und 4 im versperrten Zustand;

Figur 7

einen Teil der Verriegelungseinrichtung mit dem Schloss im noch nicht eingesetzten Zustand;

Figur 8

das Schloss im eingesetzten Zustand, wenn sich die Verriegelungs- einrichtung in der Freigabestellung des Schachtunterdeckels befindet;

Figur 9

die durch das abgesperrte Schloss gesicherte Verriegelungsstellung der Verriegelungseinrichtung;

Figur 10

eine Aufsicht auf einen Bereich eines Schachtdeckels, der den Schacht bündig mit seiner Umgebung abschließt, mit der erfindungsgemäßen Sicherungsanordnung;

Figur 11

den Zustand des Schachtes, in dem das Schloss in das rohrförmige Gehäuse des Schachtdeckels eingesetzt wird;

Figur 12

den Schachtdeckel gemäß Figur 11, wobei sich der Drehriegel in der Öffnungsstellung des Schachtes befindet;

Figur 13

den Schacht gemäß Figur 11, wobei sich der Drehriegel in der Verriegelungsstellung des Schachtes befindet;

Figur 14

eine Darstellung ähnlich Figur 13, die die Verriegelungsstellung des Drehriegels veranschaulicht;

Figur 15

eine Darstellung ähnlich Figur 8, mit einer Blockier- und Freigabeeinheit einer Zugangsberechtigungs-Überprüfungseinrich- tung im blockierten Zustand des Riegels des Schlosses und

Figur 16

eine Darstellung ähnlich Figur 15, jedoch mit zurückgezogenem Stift der Blockier- und Freigabeeinheit.

Further details emerge from the following description of a preferred embodiment and from the drawings. Showing:

FIG. 1

an example of a locking device mounted below a manhole cover in the open position;

FIG. 2

the locking device according to FIG. 1 in the locked position;

FIGS. 3 and 4

two different views of a releasably inserted in the fuse assembly lock, in the unlocked state;

FIGS. 5 and 6

the castle according to the Figures 3 and 4 in the locked state;

FIG. 7

a part of the locking device with the lock in the not yet inserted state;

FIG. 8

the lock in the inserted state when the locking device is in the release position of the manhole cover;

FIG. 9

the locking position of the locking device secured by the locked lock;

FIG. 10

a view of an area of a manhole cover, which closes the shaft flush with its surroundings, with the fuse arrangement according to the invention;

FIG. 11

the state of the shaft in which the lock is inserted into the tubular housing of the manhole cover;

FIG. 12

according to the manhole cover FIG. 11 , wherein the rotary latch is in the open position of the shaft;

FIG. 13

the shaft according to FIG. 11 , wherein the rotary latch is in the locking position of the shaft;

FIG. 14

a representation similar FIG. 13 illustrating the locking position of the rotary latch;

FIG. 15

a representation similar FIG. 8 with a blocking and releasing unit of an access authorization checking device in the locked state of the lock of the lock and

FIG. 16

a representation similar FIG. 15 , but with retracted pin of the blocking and release unit.

In the FIGS. 1 to 9 the fuse arrangement according to the invention is shown on a manhole cover.

In the FIGS. 1 and 2 is a locking device 1 shown, in which by rotating an inner linkage 2 five rods 3 can be extended so that their ends engage in pockets not shown on the shaft edge or in a manhole frame, or - like FIG. 1 shows - be withdrawn from these. It will be appreciated that the invention is also applicable to other interlocking devices in which one or more latches can be advanced or retracted. The illustrated locking device is located on the underside of a manhole cover 4.

The FIGS. 3 to 6 show a cylindrical lock 5, in which by means of a key 6, a rotary latch 7 from the in the Figures 3 and 4 illustrated open position of the castle in the in Figures 5 and 6 shown locking position is rotatable. The lock 5 has a straight line extending from the lower edge 8, which extends beyond the range of movement of the rotary bolt 7 addition.

In addition, protruding from the lock 5 down a pin 9, which is secured to the lock in a suitable manner.

The FIGS. 7 to 9 show that the inner rod 2 is rotatably connected to an actuating element 10, which is provided for example with a hexagon socket, into which a corresponding tool can be used to rotate the inner linkage 2 and thus extend the rods 3 substantially radially or pull back.

A housing 11 circular cylindrical shape with a bottom 12 surrounds the actuator 10 and is provided with an inwardly projecting pin 13 which is fixed to the housing wall. With the actuating element 10, an outer ring 13 a is rotatably connected, which has a recess 14 which is dimensioned such that the pin 9 can protrude into the recess 14 when the recess 14 is aligned with the pin 9. The housing 11 is non-rotatably attached to the lower lid 4.

In the in FIG. 8 shown state in which the locking device 2, 3 is in the release state of the manhole cover 4, encounters when inserting the lock 5 in the housing 11, the tip of the pin 9 on top of the ring 13 a, which is why the pin 13 in the path of movement of the bolt 7 of the lock 5 is located so that the lock 5 can not be shut off. As a result, a worker knows that the manhole cover has been accidentally not brought into the locked position. After removal of the lock 5, the actuating element 10 (FIG. FIG. 9 ) is rotated in the locking position, whereby the recess 14 rotates in a position aligned with the pin 9 position, when now the lock 5 is inserted into the housing. The pin 13 migrates to the upper end of the slot 8, so that the key 6 can rotate the latch 7 in the closed position in which the lock 5 is mounted in the housing 11.

In the FIGS. 10 to 14 the fuse arrangement according to the invention is shown on a manhole cover, which closes the shaft flush with its surroundings. The manhole cover is preferably made of cast iron, but it can also consist of concrete.

In this embodiment, a cylindrical lock 5 is provided, which coincides with the lock 5 of the manhole cover, so that this not to be described again here. The circular cylindrical housing 11 includes an integrally formed, inwardly projecting projection 15 which has the same function as the pin 13 of the above embodiment.

The actuator 10, which has the shape of a flattened on one side bolt head is connected to a bolt 16 for common rotation, which is located between a in FIG. 12 illustrated opening position of the shaft and one in the FIG. 13 and 14 shown locking position is rotatable back and forth, wherein it engages in the latter, locked position of the shaft, an inner projection 17a of the manhole frame 18a.

The pin 9 is at such a point from the bottom of the lock 5 down before that it impinges when inserting the lock 5 in the housing 11 on the located in the open position latch 16, wherein he due to its length complete insertion of the lock plug. 5 prevented in the closed position. The pin 9 passes through a hole 17 in the bottom wall 18 of the housing 11, said bottom wall 18 has a central opening, which allows the insertion of a tool for rotating the underlying actuator 10.

When the rotary latch 16 is in the closed position of the shaft, it is pivoted out of the entry path of the pin 9, so that the pin 9 can get past the rotary latch 16 in the lower end position.

The pin 9 prevents the rotary latch 16 can automatically move due to vibration in the open position.

FIG. 15 schematically shows a blocking and releasing unit 19, which can extend and retract a pin 20, for example by means of an electric spindle drive or in an electromagnetic manner. In FIG. 15 the pin 20 is extended and protrudes through a lateral recess 21 which extends from the elongated recess 8 in the path of movement of the bolt 7 of the Lock 5 so that the latch 7 is not in the release position of the castle (in FIG. 15 to the left) can be turned. In FIG. 16 the pin 20 of the blocking and release unit 19 is retracted from the path of movement of the bolt 7, which thus - as in FIG. 16 shown - can be turned into the release position of the castle. The blocking and releasing unit 19 is part of an access authorization checking device, which contains a reception and evaluation unit, not shown in the figures, which is mounted at a suitable location of the manhole cover.

It is emphasized that the invention is not limited to the described and illustrated embodiments. Rather, all disclosed features can be individually combined with each other in any way.

Claims (17)

Safety arrangement for a lockable or lockable component, in particular for a manhole cover, which is provided with a locking device which contains an actuating element, by the rotation of which the locking device is movable between a locking position and a release position of the manhole cover,
marked by
a removable lock (5) and by a conditional access checking device adapted to block the closed position of the lock (5) and to release it only when it has received associated access authorization data. Safety arrangement according to claim 1,
characterized,
that the access authorization checking device, a transmitting unit, a receiving and evaluation unit and a locking and unlocking unit (19). A fuse arrangement according to claim 2,
characterized,
in that the blocking and releasing unit (19) has a push-pull and retractable pin-like element (20). A fuse arrangement according to claim 3,
characterized,
that the pin-like element (20) protrudes in the advanced state in the movement path of the bolt (7) of the lock (5). A fuse arrangement according to any one of claims 1 to 4,
characterized,
in that the actuating element (10) is surrounded by a non-rotatably supported housing (11) into which the lock (5) can be inserted. A fuse arrangement according to any one of claims 1 to 5,
characterized,
in that the lock (5) can be inserted into the housing (11) only in a predetermined circumferential position such that the lock (5) can be locked in the housing (11). Safety arrangement according to claim 6,
characterized,
in that the housing (11) has an inwardly projecting projection (13), and in that the lock (5) has an elongated recess (8) extending in the direction of insertion to the front edge into which the projection (13) can enter. Safety arrangement according to claim 7,
characterized,
that the elongated recess (8) on the inside of a bolt (7) of the lock (5) is covered when the latch (7) is moved to the locked position. A fuse arrangement according to claim 7 or 8,
characterized,
that the recess (8) has such an extent, that the projection (13) in the fully into the housing (11) inserted position of the lock (5) behind or above the bolt (7) is located. A fuse arrangement according to any one of claims 1 to 9,
characterized,
that from the recess (8) at the height of the bolt (7) further comprises a lateral recess (21) into which the pin-like element (20) can enter. A fuse arrangement according to any one of claims 1 to 10,
characterized,
that on the lock (5) a pin (9) is fixed, which projects in the direction of insertion of the lock (5) of this. Safety arrangement according to claim 11,
characterized,
in that the actuating element (10) is non-rotatably connected to a component (13a) which has a recess (14) into which the pin (9) can enter. A fuse arrangement according to claim 11 or 12,
characterized,
that the recess (14) is aligned with the pin (9) when the actuating element (10) is in the position in which the locking device (2,3) is in the locking position. A fuse arrangement according to any one of claims 11 to 13,
characterized,
that the pin (9) has a length such that it projects into the recess (14) in the fully inserted state of the lock (5). A fuse arrangement according to any one of claims 1 to 14,
characterized,
that the manhole cover is a manhole cover. Safety arrangement according to claim 11,
characterized,
in that, in the open position, a latch (16) connected in a rotationally fixed manner to the actuating element (10) is arranged in the entry path of the pin (9) so as to block the complete insertion of the lock (5) while in the closed position it locks the entry path of the pin (9) releases. A fuse arrangement according to any one of claims 1 to 16,
characterized,
that the housing can be covered with a cap.

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