EP0987388A1 - Security lock - Google Patents

Abstract

The security lock has a sliding bolt (2) moving between two positions, and which can be locked in place in at least one of the two positions (26,27). The lock has at least two security conditions to lock the bolt. In the first place, the bolt is free to slide and its movement is blocked in the second place. After the bolt has been released, it switches from the first to the second condition.

Description

The present invention relates to a security lock with a between two positions and in at least one position lockable locking element.

Safety closures of the generic type are preferred required for device housings, vending machine housings, transport containers, Security containers, refill magazines and the like. In all cases where the Security lock at least one access to the interior of a housing or to secure a container, a locking element, which is blocking in front of an opening or snapping into a trap, in itself be secured in a known manner by a lock. So far this is the normal one Security claim to limit access to an interior of the housing or the opening of a container and the like may be sufficient Safety locks not to meet increased security requirements sufficient. In particular, they are not suitable, on the one hand, for opening to reserve housing, containers and the like to authorized personnel, on the other hand, to allow opening in special situations, for example in the prescribed installation states of the housing in machines. So it should be possible, the housing, the container or the like on the one hand by to let authorized personnel open, on the other hand an automatic one Provide opening in a planned installation state or if necessary to provide at least one opening for a special case, the Container, the housing, the refill magazine or the like in Secure it afterwards. Such special situations arise for example, where the filling of containers from the transport and the Use of the containers are separated from each other.

The invention has for its object to provide a security closure that can be used for housings, containers, magazines and the like, that is as simple and easy to manufacture and with little economic effort, less susceptible and cannot be manipulated and in addition to the unimpeded authorized opening also allows opening at least once in a predetermined installation or operating situation.

The solution of this object is achieved by a security closure with the features of claim 1. Further advantages and features result from the subclaims.

The security lock according to the invention comprises at least one between two positions longitudinally movable locking element, which in at least one of the two positions can be secured, i.e. not opened without unlocking can be. Furthermore, a lock is connected to the locking element, which has at least two different backup states. In one The first locking condition can be the locking element by external action unlock and in a translational movement from a closed position in move an opening position. As soon as the locking element is back in the Is closed, the lock switches from the first to the second security state in which the locking element against a Longitudinal shift is blocked. A release and longitudinal shift external influence is no longer possible. A downshift of the Lock from the second to the first backup state is again only possible by authorized personnel.

The locking element is preferably against a guide base against the Force of an elastic element held in a closed position and in one Plane of motion in a transitional movement from the closed position in an opening position movable. The force for this can come from outside, ie from applied outside the safety lock in different ways become. Both simple mechanical solutions can be used as well the use of electrical or hydraulic actuators. Across to the A guide link extends in the translatory direction of movement or a cam track. This is essentially parallel to the plane of motion. The leadership backdrop can also be in the Bolt element itself. A can be applied to the management backdrop control cams arranged substantially perpendicular to the plane of movement. The control cam and the guide link are between each other two stop positions movable, this relative movement in runs essentially transverse to the translatory movement. Is the Guide link formed in the locking element itself, is the Control cam on a second, transversely movable element. On the other hand, can the guide link on a component independent of the locking element, for example, a control disk. In this case the control cam preferably on the locking element or stands with this in firm connection. The two stop positions are preferred through the end limits of the cam track or Leadership backdrop formed. In the area of a stop position, the Leadership backdrop a width that is a relative movement between it and the control cam essentially parallel to the translational Allows direction of movement. So the cam is in the area of this Stop position, the locking element can translational movement of from the closed position to the open position. In the other Stop position, the guide link has a width that in corresponds essentially to the extension of the control cam. So it is the control cam is in the area of this stop position of the guide link a movement parallel to the translatory direction of movement of the Locking element no longer possible, so the locking element is in its Locked position locked. The relative transfer of the control cam from the one in the other stop position - or the transverse movement of the Leading link relative to the control cam - is made on the one hand by elastic Elements, for example a spring tension, causes, on the other hand against the force of the elastic elements by actuators.

According to an advantageous proposal of the invention, the guide link is in formed a plate-shaped control disc. Preferably, the Leading gate arched and around one outside the leading gate in the the bearing point located in the center of the slide is rotatable. The control cam is connected to the locking element in this case, so that the relative movement between the guide link and control cam by a Rotation of the control disc around the center of the slide track is effected. The control disc is in this case by the force of an elastic element preferably so biased that the control cam in the area of Stop position is positioned where the guide link width of the Expansion of the cam corresponds. The locking element with the on it Arranged control cam can be due to the disability of the do not translate narrow management backdrop. The locking element is in blocked its closed position. Along the leadership backdrop is in front of the A stop cam in the area of the stop position with increased width educated. Will the guide link against the force of the elastic Element by rotating the control disk relative to the holding cam, that a relative transverse movement from one stop position to the other Stop position takes place, the control cam is behind the holding cam locked and is thus in the stop position with an enlarged Width. In this position, the locking element can be translated into a Move open position, the control disc with the guide link due to the force of the elastic element is rotated so that the Stop cams in front of the area with reduced width against a stop bumps. Now the locking element is back in its closed position moved back, the control cam moves in along the guide link the area with reduced width so that the locking element against translatory movements are secured.

The actuator for generating the relative movement between the control cam and the guide link is advantageously secured by a lock. This means that the control cam can only be used using the safety lock get into the area of the guide link with increased width and if necessary, be locked behind the holding cam. The castle is thus positioned "sharply" and after one-time unlocking and translational Movement of the locking element automatically switches the lock to Lock position in the second backup state.

The safety lock advantageously has a further lock, the is movable against the force of an elastic element and an additional Blocking of the locking element causes in the closed position. Is located the lock in the first security state, in which the locking element can generally carry out a translatory movement, must nevertheless First the lock must be overcome using the translational movement to be able to carry out the consequences described above. The lock will like the bolt actuation itself moves from outside the safety lock and can in turn be secured by a lock or other coding his. According to a further advantageous proposal of the invention Lock also movable by the actuator, which is the relative movement between the control cam and the guide link to focus the lock carries out. Because the control cam is behind the one in the guide link trained holding cams should be locked to the first Maintaining the lock 's security status must be maintained at the Focusing the lock, the locking element at least so far be moved translationally that the control cam the holding cam can happen. For this purpose, the lock to block the Lock element to move, which is preferably by the same actuator can take place, which is the relative movement between the guide and Control cam performs.

Although the safety lock according to the invention has only a few elements includes and is simple, it is extremely effective and comprehensive multiple levels of security.

If a housing is closed and closed by authorized personnel Actuation of a safety lock via the actuator of the control cams and the guide link moves relatively such that the control cam in the widened area of the management backdrop and is locked there, the locking element can be opened once by external intervention. Is the external engagement ends, the locking element closes due to the load through an elastic element again and the lock switches to the second Security condition around, so that a translational movement of the Locking element is excluded. thus is at least an unauthorized one external intervention immediately recognizable. But the invention Safety lock is also suitable for automated use, because after authorized filling and focusing, for example Refill magazine can be opened automatically when a machine is in the prescribed installation position. Is the magazine the Taken from the machine, the locking element is in its closed position and the lock in its second security state, so that the Latch element can no longer be opened until authorized personnel close the lock has returned to the first backup state.

According to a further advantageous proposal of the invention, a Lock status display provided. For example, on moving A color or shape marking visible from the outside of the lock be arranged so that the condition tense, secured, unlocked and the like is recognizable. The status display can also be electronic be readable or otherwise signalable.

Furthermore, it is advantageously proposed with the invention that the lock is secured against manipulation. It is conceivable that the locking member has not closed completely because it is obstructed in the closing path. In this Fall could be pushed open and stopped if necessary. To do this is prevented with the invention proposed at the castle Arrange locking cams, which a pushing back of the locking member in prevented from being completely closed.

So far in relation to the security lock according to the invention Security locks and actuator movements or also Opening movements of the locking element are described, they can mechanical, electromechanical, electronic, hydraulic, pneumatic or include other statements. Security locks can For example, be carried out digitally, so that an electronic coding is required. The actuator movements can be mechanical or by Electric motors and the like can be performed.

The safety lock according to the invention can be produced economically, due to its simple and light construction also in many simple ones Housing can be used and represents an increased safeguard against opening.

Figur 1

eine Darstellung eines Ausführungsbeispiels eines Sicherheitsverschlusses in einem ersten Sicherungszustand;

Figur 2

eine Darstellung des Sicherheitsverschlusses gemäß Figur 1 in einem entsicherten und geöffneten Zustand;

Figur 3

eine Darstellung des Sicherheitsverschlusses gemäß Figur 1 in einem zweiten Sicherungszustand;

Figur 4

eine Darstellung des Sicherheitsverschlusses in der Position gemäß Figur 3 mit einem Stellglied;

Figur 5

eine Darstellung des Sicherheitsverschlusses gemäß Figur 4 in einer Umschaltposition;

Figur 6

eine Darstellung des Sicherheitsverschlusses gemäß Figur 4 im ersten Sicherungszustand;

Figur 7

eine Darstellung des Sicherheitsverschlusses mit einer Sperre in einem Sperrzustand;

Figur 8

eine Darstellung gemäß Figur 7, wobei sich die Sperre in einem Öffnungszustand befindet;

Figur 9

eine Darstellung des Sicherheitsverschlusses gemäß Figur 7, wobei sich die Sperre in einem Zwischenzustand befindet;

Figur 10

eine Darstellung des in den Figuren 1 bis 9 gezeigten Sicherheitsverschlusses im Gesamtzusammenbauzustand in einer ersten Sicherungsposition;

Figur 11

eine Darstellung des Sicherheitsverschlusses gemäß Figur 10 während eines Öffnungsvorganges und

Figur 12

eine Darstellung des Sicherheitsverschlusses gemäß Figur 10 während eines Umschaltvorganges vom zweiten in den ersten Sicherungszustand.

Further advantages and features of the invention result from the following description with reference to the figures. Show:

Figure 1

a representation of an embodiment of a security lock in a first security state;

Figure 2

a representation of the safety lock according to Figure 1 in an unlocked and opened state;

Figure 3

a representation of the security lock according to Figure 1 in a second security state;

Figure 4

a representation of the safety lock in the position shown in Figure 3 with an actuator;

Figure 5

an illustration of the safety lock according to Figure 4 in a switch position;

Figure 6

a representation of the safety lock according to Figure 4 in the first security state;

Figure 7

a representation of the safety lock with a lock in a locked state;

Figure 8

a representation according to Figure 7, wherein the lock is in an open state;

Figure 9

a representation of the safety lock according to Figure 7, wherein the lock is in an intermediate state;

Figure 10

a representation of the safety closure shown in Figures 1 to 9 in the overall assembled state in a first securing position;

Figure 11

a representation of the safety lock according to Figure 10 during an opening process and

Figure 12

a representation of the safety lock according to Figure 10 during a switching process from the second to the first security state.

In the figures, the same elements are denoted by the same reference symbols.

In Figures 1 to 3 is an embodiment for a Safety lock shown on which the basic functions are explained become.

On a base plate 1, which for example is part of a housing wall can be, a locking element 2 is translationally guided back and forth. This is indicated by the double arrow in Figure 1. The locking element 2 is shown plate-shaped and moves in a guide 25 between one upper position 26 and a lower position 27. In the upper position on Stop 26 of the guide 25 is the locking element 2 in the Closed position. Locking bars, locking rods can be on the locking element and the like can be arranged, which is translational with the locking element can be movable or pivotable or rotatable about deflections. Combinations of corresponding movements are also possible. In the shown Exemplary embodiment carries the locking element a bearing roller 4, which one the base plate arranged bearing roller 3 is opposite. One in one Lateral slot arranged housing wall can, as for example in Figure 2 indicated, from a wedge element introduced from the outside be penetrated, which moves between the rollers 3 and 4. Doing so the roller 4 pushed away from the roller 3 and attached to it Bolt element 2 moves from the closed position to the open position. The locking element also carries a control cam 5, which is vertical seen from the plate-shaped locking element in the image plane to the front protrudes.

Around a pivot bearing point 7 arranged on the base plate 1 is a Control disc 6 rotatably arranged. The control disc 6 is as plate-shaped element in the embodiment shown and has an arcuate cam track 8. The pivot point 7 is in Center of the cam track 8. By turning the control disc 6 moves the cam track 8 relative to the control cam 5. The cam track has one curved front edge course with a locking cam 9 and extended backdrop area 11 and, at the other anchor point, one narrowed backdrop area 10.

FIGS. 1 and 2 also show two further special aspects of the Invention clarifies. The control disk 6 embosses two marking cams 28, which, for example, have a differently colored point and through an opening, not shown, in a housing cover in the respective Position are visible. This creates an optical positioning mark provided. Furthermore, a stop cam 29 is shown, which Tampering with a not completely blocked locking member prevented. In particular according to Figure 2 it can be seen that the stop cam is accurate is in the insertion path of an opening key when the lock is in the unlocked but not yet closed position. Would in this position the locking member kept open, for example after Magazine removal from a machine again by inserting one Key to set the opening position, this would be done by the Stop cams 29 can be prevented. Alternative possibilities are in Scope of the invention.

In the assembly state shown in Figure 1, the locking element is in its closed position, i.e. with its front edge in the area of the upper one Stop 26, the control cam 5 behind the locking cam 9 of the Cam track 8 is locked. The control cam 5 is located on one Anchor point of the cam track 8 in the expanded area 11. The expanded Area has an extent that allows the control cam to overlap a distance determined by the extension translationally with the Bolt element can move in the cam track.

Now, as shown in FIG. 2, an opening key 13 with the wedge 14 guided from the outside between the rollers 3 and 4, the locking element moves 2 against the force of a spring, not shown, from the closed position in the Opening position. The control cam 5 also moves out of the rear the latching cam 9 position translationally approximately in the direction of Pivot point 7 of the control disk 6. The control disk 6 is not by a shown elastic element biased so that it is in the image plane seen turning to the right. The control cam 5 abuts against Stop 12, the at the inner end of the expanded area 11 Cam track 8 of the control disk 6 is formed. As long as the wedge 14 remains between the rollers 3 and 4, the locking element thus remains in its Open position and the control disc in its stop position opposite the control cam. The position of the parts shown in FIG. 2 arises relative to each other. Now the wedge 14 between the rollers 3 and 4th removed, the locking element 2 moves back in due to the spring force its closed position, the locking element 2 the control cam 5th translationally moved away from the stop 12, so that due to the bias the control disk 6 rotates further to the right, as seen in the image plane, and the control cam enters the narrowed area 10 of the cam track 8. The narrowed area 10 of the cam track has a width which is substantially the Expansion of the control cam 5 corresponds. The control cam is therefore against blocked a translatory movement relative to the control disc 6, so that the Latch element can no longer be moved in translation. It remains in its closed position. The state shown in FIG. 3 is established.

The state shown in Figure 1 is the first backup state of the by described components formed lock, in which the locking element 2nd can be unlocked and moved into the open position during the after One-time unlocking automatically set and shown in Figure 3 Security condition 2 excludes a movement of the locking element. The Switching the lock back from the second to the first safety state According to the invention, this should be done by authorized personnel.

FIGS. 4 to 6 show a further expansion stage, with FIG. 4 with regard to the locking element 2, the control disk 6 and the control cam 5 the locking position shown in FIG. 3 in the second securing state shows. An adjusting disc 15 is rotatably arranged about a pivot point 16 and has a driver cam 17, one in the embodiment shown Bending edge, on. A cam 18 is used for a later described Function. The adjusting disc 16 can be connected via a linkage, not shown be connected to a lock, so that when turning the key also Adjusting disc 15 is rotatable about the pivot point 16. In the image plane the adjusting disc 15 is seen to the left around the pivot point 16 rotated, the adjusting cam 17 engages behind an edge of the control disk 6. The adjusting disc 15 can be substantially plate-shaped and parallel next to the substantially plate-shaped control disc 6 and the be plate-shaped locking element 2 positioned. When the Setting disc 15 is the against the force of an elastic element Control disc 6 rotated so that the control cam 5 along the cam track is moved out of the narrowed area. Figure 5 shows the position where the control cam 5 reaches the area of the locking cam 9. Here can either by means of closing force against the force of a spring of the control cam 5 are moved a little downward together with the locking element 2, or it becomes one as shown in FIG. Opening key 13 with wedge 14 placed between the rollers 3 and 4 to the locking element one piece lower. The control cam 5 passes the locking cam 9 and gets into the Stop area of the cam track 8. The locking element moves in again the closed position and the state shown in FIG. 6 is established, which corresponds to the fuse state 1 shown in FIG. 1. The Locking element can now be unlocked and opened once.

Figures 7 to 9 show a further embodiment of the invention Safety lock.

The locking element 2 is in the closed position. Doing so the roller 4 arranged on the locking element from the locking arm 22 of a lock 19 blocked against movement. The lock 19 is in by means of a spring 21 the locking position shown in Figure 7 biased. The lock 19 is one Pivot bearing 20 rotatable and has an actuating arm 23 with one on it trained cam track 24, the function of which will be described later.

If the locking element is now to be moved into the open position, it must be first the lock 19 are rotated against the power spring 21 so that the roller 4 can move away from the roller 3. For this purpose, the In the embodiment shown in Figure 8 for an opening key 13 next to the wedge 14 can also be designed as an unlocking pin. This is longer than the wedge 14 and thus reaches the lock earlier than the wedge the rollers 3, 4. Die Lock is rotated away from the pin about the pivot point 20 and there thus the roller 4 against movement away from the roller 3 free, so that also the locking element from the closed position to the open position can move. If the opening key is removed, the lock moves due to the force of the spring 21, as shown in Figure 9, back into the Blocking position.

Figures 10 to 12 show the assembled state of all described Expansion stages.

The locking element 2 is located relative to the base plate 1 in the Closed position. The roles 3 and 4 are close together and the role 4 is gripped by the locking arm 22 of the lock 19 and locked. The Control disc is positioned against the force of an elastic element that the control cam locks behind the locking cam 9 of the cam track 8 is. The adjusting disc 15 is in a neutral position.

Now, as indicated in FIG. 11, an opening key 13 with wedge 14 and a safety pin is first introduced by the Unlocking pin pushed the lock 19 away, so that the roller 4 is free. The Wedge 14 is then driven between the rollers 3 and 4, so that how described above, the locking element 2 moved to the open position, so that the control cam 5 strikes the stop 12 of the control disk 6. The control cam 5 then moves into the narrowed area 10 of FIG Control disc 6 when the opening key is removed again. The Lock 19 is due to the spring force again under the roller 4 and Closure is fully secured. Should now by means of the adjusting disc 15 Control disc 6 are brought back into their cocked position, so that the Control cam locked behind the locking cam 9, so this is only possible if the lock 19 is unlocked, otherwise it is in the position of Locking cam 9, the locking element 2 in the control cam 5 located thereon couldn't at least open something. For this purpose, the one above is already there described cams 18 arranged on the adjusting disc 15 along the Cam track 24 on the actuating arm 23 of the lock 19 is moved and the lock briefly unlocked to the control disc 6 completely in the stop position to be able to move. Then the adjusting disc 15 is again in the spent neutral position and the lock 19 moves with the locking arm 22 under the role 4.

The described embodiment serves for explanation and is not restrictive. In particular, the actuators can also be different be mechanically movable, that is to say electrically, electrohydraulically and the like. The locking elements can also be mechanical or electronic locks include or be formed as such. The same goes for the very Simplified opening key, which also has complicated coding include and with an appropriately coded lock on the housing side can work together.

Reference list

1

Base plate

2nd

Locking element

3rd

role

4th

role

5

Control cam

6

Control disc

7

Pivot bearing

8th

Cam track

9

Locking cams

10th

narrowed stop area

11

extended stroke area

12th

attack

13

Opening key

14

wedge

15

Adjusting disc

16

Pivot bearing

17th

Setting cams

18th

cam

19th

Lock

20th

Pivot bearing

21

feather

22

Locking arm

23

Control arm

24th

Cam track

25th

guide

26

upper stop

27

lower stop

28

Marker cams

29

Stop cam

Claims (13)

Safety lock with one between two positions longitudinally displaceable, secure in at least one position Bolt element and a lock with at least two Security states for securing the locking element, being in one first locking state unlocked the locking element and is longitudinally displaceable and in a second securing state Lock the locking element is locked against longitudinal displacement, wherein the lock after unlocking the locking element from the first switches to the second backup state. Safety closure according to claim 1, with one against one Guide base against the force of an elastic element in one Plane of motion in a translational motion of one Locking position in an opening position movable locking element, one essentially transversely to the translatory direction of movement in a plane lying essentially parallel to the plane of movement extending leadership backdrop and a can be put on this, in arranged substantially perpendicular to the plane of movement Control cam, the control cam and the guide link relative are movable relative to one another between two stop positions, and wherein the guide link in the area of a stop position a width has a relative movement between it and the cam in allows substantially parallel to the translatory direction of movement, and which in the area of the other stop position on one of the Extension of the cam essentially corresponding width decreased. Safety lock according to one of the preceding claims, characterized characterized in that the guide link in a plate-shaped Control disc is formed. Safety closure according to claim 3, characterized in that the Guide link has an arcuate course and the control disc parallel to the locking element having the control cam around the The center of the slide is rotatably arranged. Safety lock according to one of claims 3 or 4, characterized characterized in that the guide link at one end of the arch towards of the center broadened and at the other end of the arch to one of the Expansion of the cam corresponding width is narrowed. Safety lock according to one of the preceding claims, characterized characterized in that the leadership backdrop in the widened area Holding cam has. Safety lock according to one of claims 3 to 6, characterized characterized in that the guide backdrop before the end of the sheet narrowed width has a stop. Safety lock according to one of the preceding claims, characterized characterized in that the guide link by an elastic element is so biased that the control cam in the narrowed area is positioned. Safety lock according to one of the preceding claims, characterized characterized in that this is an actuator for performing a Relative movement between the guide link and the control cam having. Safety closure according to claim 9, characterized in that the Actuator is secured by a lock. Safety lock according to one of the preceding claims, characterized characterized in that this one against the force of an elastic Element movable lock to block the locking element in the Has closed position. Safety closure according to claim 11, characterized in that the Lock by the actuator to generate the relative movement between Control cam and guide link is movable. Safety lock according to one of the preceding claims, characterized characterized in that it has a status display.

Images