WO2012079746A1

WO2012079746A1 - Safety closure for a container which has an opening which can be closed by a cover

Info

Publication number: WO2012079746A1
Application number: PCT/EP2011/006288
Authority: WO
Inventors: Dietmar Lohner; Raymund Gruhn
Original assignee: Krones Ag
Priority date: 2010-12-16
Filing date: 2011-12-13
Publication date: 2012-06-21
Also published as: DE102010063291B4; DE102010063291A1

Abstract

The invention relates to a safety closure for a container (1) which has an opening which can be closed by a cover (2), with a closure lever (4), which can be brought from a closing position into a first opening position, wherein the cover (2) is lifted by a first distance, but the cover (2) is prevented from being lifted off completely, and the closure lever (4) can be brought from the first opening position into a second opening position, which allows the cover (2) to be lifted off completely. The invention provides that the closure lever (4) comes to bear against an end stop (14) in the second opening position, said end stop being selected such that the cover hits against a stop (7) of the closure lever (4) during the closing operation before it is possible for the cover (2) to be positioned loosely on the opening of the container (1), and that the cover (2) can only be closed once the closure lever (4) has been brought from the second opening position, via the first opening position, into the closing position.

Description

Safety closure for a container whose opening can be closed with a lid

The invention relates to a security closure for a container whose opening can be closed with a lid.

It is known to carry out a safety closure with a locking lever, which can be brought from a closed position into a first open position, wherein the lid is forcibly raised by a first path. In this case, a complete lifting of the lid is initially blocked upwards, whereby an uncontrolled impact of the lid should be prevented, for example, when the lid adheres to the container. Only after forced opening of the shutter lever can be folded away from the first opening position and the complete lifting of the lid is possible.

For this purpose, EP 0 862 660 A1 shows a container whose lid is closed by a bracket, in which a pivotally arranged locking lever is brought into engagement with a receptacle of the bracket in a generic manner. The locking lever has a spindle, on which an actuating element is screwed. The actuating element acts on the bracket with a clamping force, so that the cover is pressed against the container via the bracket. In this case, the actuating element comprises a guide in order to prevent a lateral movement of the locking lever during a first opening path. The lid can thus be lifted a first way without it being completely released. After the first opening of the shutter lever is pivoted sideways. This results in the problem that the lid can fall back from an open position on the container. In particular, it is problematic when safety-related components are operated in the container, which are turned off in the open state. If the cover is unintentionally placed, it can start uncontrolled without ensuring that, for example, reaching into the container is precluded.

Based on this prior art, it is the object of the present invention to provide a safety closure for a container, with which can overcome the disadvantages found in the prior art and in particular a loose laying of the lid is prevented when closing. This object is achieved by a device according to the teaching of claim 1.

Preferred embodiments of the invention are subject of the dependent claims.

In a manner known per se, the safety closure for a container whose opening is closed by a lid comprises a closure lever which can be moved from a closed position into a first opening position. A container is to be understood in the broadest sense, the safety closure can in principle be used on any closable with a lid opening. The lid is forcibly raised by a first way and a complete lifting or uncontrolled opening of the lid is blocked. The locking lever can be moved from a first opening position to a second opening position, in which the cover can be completely lifted off. According to the invention, the closing lever in the second opening position comes to rest on an end stop in such a manner that the lid abuts against a stop of the closing lever during the closing operation. As a result, a loose laying the lid on the opening of the container is impossible because the lid comes first in an accidental closing first to the stop of the locking lever to the plant before contact with the container is possible. In this case, the lid can be closed only after the closure lever has been moved from the second opening position to the closed position via the first opening position.

In principle, the articulated arrangement of the locking lever on the container can be achieved in different ways. In a preferred embodiment, however, the closure lever is pivotably arranged via a hinge on the container in a pivoting region. Along this pivoting range, the locking lever can be inserted into a receptacle arranged on the cover. The receptacle is formed in the simplest case directly on the lid, but may also be formed indirectly on the lid, for example on a bracket.

A preferred embodiment provides for the inclusion that the closure lever is at least partially included in the outer circumference. It is clear that the contact surface between the locking lever and the receptacle is to be made as large as possible in order to achieve the desired frictional connection for the movement of the locking lever on the receptacle To allow clamping force. This ensures a bifurcated recording, since the locking lever is covered in a very wide range.

In principle, the number of elements on the closure lever that come into contact with the lid with regard to its shape, in particular in the area of the recording freely selectable. In the simplest case, only one element or a corresponding shape to be provided on the locking lever, with which both the clamping force is transmitted to the recording, as well as a forced opening takes place. A preferred embodiment provides that a first and a second pressure plate are arranged on the closure lever, wherein the first and / or the second pressure plate is adjustable. This can be adjusted in a simple manner along the axis of the locking lever according to the desired contact with the recording.

A further preferred embodiment provides that the first and the second pressure plate are adjusted via an actuating element along the axis of the locking lever, for which the locking lever itself can be moved along its axis or these are adjusted along the locking lever, for example via a guide device. To close the lid, the cover can be pressed against the container by means of the first pressure disk via the receptacle. With the second pressure plate, the lid is forcibly opened by the closure lever is brought from the closed position to the first open position, wherein the second pressure plate presses from below against the receptacle and so lifts the lid. In addition to the forced opening, the second thrust washer can form the stop according to the invention on the closure lever, against which the lid abuts during the closing process, simply by always lying below the receptacle after the forced opening.

The end stop in the pivoting range of the locking lever can be arranged both on the container and on the closing lever itself in order to hold the closing lever in the second opening position. The position of the end stop in the swivel range determines the pivotal position of the locking lever in the second open position. It must be ensured that the cover is released, which takes place in a preferred embodiment, in the second opening position, the first pressure plate is outside the recording. In addition, a loose resting of the lid during the closing process is prevented by the cover with the recording of the pivoting of the locking lever from the first opening position to the second opening position second pressure plate slides, but this also forms a stop on the locking lever in the pivoted position at which the lid first comes to rest when closing.

In order to allow the adjustability of the locking lever along its axis, ie radially to the hinge axis in a simple manner, the locking lever in a particularly preferred embodiment, on the hinge-side end of a thread. This can be screwed with a mating thread formed on the joint, so as to adjust the locking lever in a control range S along its axis. As a result, in particular the distance between the pressure discs to the hinge axis and thus relative to the container is variable. As a result, the pressure discs can be moved along the receptacle on the lid to push the lid over it when closing on the container or lift off when opening. The adjustment range S extends from the first opening position, in which the cover is raised by a first path and the closure lever is pivotable, to the closed position.

A preferred embodiment provides that the closure lever comprises an axial end stop, which comes into contact with the opening at least in the second open position. For example, the axial end stop in the second opening position due to the position of the locking lever to ensure the storage of the recording on the pressure plate. For this purpose, further axial end stops are conceivable which advantageously limit the adjustment range of the locking lever along its axis in further positions. In the simplest case, lockable elements along the thread are provided, whereby the thread itself may be limited.

A preferred embodiment provides to form the joint of a arranged on the container backdrop and a pivotable about a hinge pin arranged Kulissenreiter. The shape of the backdrop is initially no restriction, but in particular stop elements and recordings along an edge are formed on this. The scenery rider takes on the locking lever and allows for this pivotal movement along the scenery in the direction of the associated container. The arrangement of the hinge pin can also be movable according to the desired degrees of freedom of Kulissenreiters. Both the number of positions of the locking lever in the pivoting range, as well as the nature of the stop elements can be carried out in many ways, with a preferred embodiment provides that the slide rider includes the mating thread through which the hinge-side end of the locking lever is screwed into a slot receiving the backdrop , The locking lever can be screwed from the first open position into the closed position starting from an axial end stop along the slot receiving in the adjusting area S. In the first opening position of the locking lever is outside the groove receiving and is pivotable in the second opening position. To close the locking lever is screwed from the first open position to the closed position, wherein the first pressure plate presses the lid against the container. In this case, the locking lever is held in the direction of the groove receiving, in which the first pressure plate above the receptacle and the second pressure plate is held below the receptacle, whereby both the closing of the lid and the forced opening is ensured.

Another particularly preferred embodiment provides to form the joint of a arranged on the container fastening means with a rotatably mounted hinge pin. The fastening device serves for the arrangement of the hinge pin in the direction which allows a pivoting of the locking lever about the hinge axis to the lid. This embodiment has the advantage that the hinge pin comprises the mating thread for screwing the thread on the locking lever, whereby a particularly simple construction with few components is made possible.

It is further preferred to design the fastening device U-shaped. For example, the two opposite surfaces can serve to receive the hinge pin and be oriented on a surface parallel to the hinge axis. The surface is parallel to the hinge axis with a recess. The recess receives the hinge-side end of the locking lever when the closure lever is screwed from the first open position to the closed position when closing the lid. The closure lever is thereby fixed in the direction in which the first pressure plate above the receptacle and the second pressure plate is held below the receptacle to hold the first pressure plate on the recording and when opening the second pressure plate below the recording when closing. Furthermore, it is preferred that the second pressure disc for positively opening the lid along the axis of the locking lever is arranged at a distance D from the hinge axis in order to lift the receptacle within the setting range S. This can be ensured that the second pressure plate forcibly opens the lid by the locking lever is moved radially to hinge axis from the closed position to the first open position.

In addition, a further preferred embodiment provides that the container or the lid comprises a sensor device in order to determine the opening state of the container. This sensor switches according to the opening state of the lid. Thus, safety-relevant components, for which a reaching into the container must be prevented during operation, be switched off, as long as the lid is open.

In the following, the security closure according to the invention will be explained in more detail on the basis of merely preferred embodiments of illustrative drawings.

Show it:

Figure 1 is a perspective view of a container which is closed with a lid indirectly arranged on a lever, with a safety closure.

FIG. 2 is a side view of the container of FIG. 1 with the safety latch in the closed position; FIG.

3 shows the side view of the container from FIG. 1, the safety closure reaching from the closed position into the first opening position;

4 shows a side view of the container from FIG. 1, the safety closure reaching from the first opening position to the second opening position;

Fig. 5 is a side view of the container of Fig. 1 with the safety latch in the second open position;

Fig. 6 shows a locking lever in a further embodiment, which is screwed directly to the hinge pin. Fig. 1 shows a container 1, the lid 2 is indirectly closed by a bracket 3. In the illustrated closed position of the locking lever 4 is in the fork-shaped receptacle 5 of the bracket 3, wherein the locking lever 4 comprises a first pressure plate 6, by means of which the receptacle 5 presses the lid 2 against the container 1 via the bracket 3. The seated below the receptacle 5 second thrust washer 7 serves the forced opening of the lid 2 and also forms the stop of the locking lever 4, against which the lid 2 abuts during the closing operation. The locking lever 4 has a threaded joint on which it is screwed to a link rider 8 radially to the hinge axis. The locking lever 4 is thus in a control range S, which includes both the closed position and the first opening position, screwed. About the scenery rider 8, the shutter lever 4 is pivotally mounted on the container 1. The scenery rider 8 is articulated about a hinge pin 9 on the associated with the container 1 scenery 10. The locking lever 4 further comprises an actuating element 11, by means of which the locking lever 4 is screwed into the sliding block 8, the first pressure plate 6 and the second pressure plate 7 are adjustable along a receptacle 5 according to a control range. The sensor device 12 provided on the container 1 determines the opening state of the container 1 or the lid 2, for example, via a proximity switch which determines the distance to a contact nose on the container 1. When the cover 2 is closed, safety-relevant components within the container 1 can be released by means of the sensor device 12.

Fig. 2 shows the container 1, the lid 2 is indirectly closed by a bracket 3, wherein the locking lever 4 is in the closed position in which the first pressure plate 6 via the receptacle 5 the bracket 3 and thus indirectly the cover 2 against the container 1 presses. In this case, the locking lever 4 is screwed with a joint-side thread through the mating thread on the link rider 8 and thus lies around the entire adjusting range S in a slot 13 at the top of the gate 10th

FIG. 3 shows the safety lock of FIG. 2, wherein the locking lever 4 passes from the closed position into the open position along the adjustment range S. The locking lever 4 is held in the groove 13 in the direction in which the first pressure plate 6 above the receptacle 5 and the second pressure plate 7 below the receptacle 5 is located. In this case, a forced opening of the lid 2 is ensured by the first pressure plate 6, the receptacle 5 releases above by a first piece and the second pressure plate 7 from below against the recording 5 presses. The second thrust washer 7 is arranged at a distance D from the axis of the hinge pin 9 along the locking lever 4, which ensures a lifting of the receptacle 5 during the adjustment path from the closed position to the first open position. The bracket 3 with the lid 2 is lifted upwards by a first opening path and a complete lifting of the lid 2 is blocked.

As can be seen in Fig. 4, the locking lever 4 when unscrewing along the adjustment range S in the first and in the second opening position with the joint end of the groove receiving 13. In this case, the adjusting movement along the adjustment range S with a on the locking lever 4 indirectly or directly arranged axial end stop 16 are limited. In the first opening position, the locking lever 4 is no longer fixed in the direction of the slot holder 13 and can be pivoted via the link rider 8 into the second opening position.

Fig. 5 shows the locking lever 4 in the second opening position in which it comes to rest on an end stop 14 in the pivoting range of the locking lever 4, which is selected so that the cover 2 abuts against a stop 7 of the locking lever 4 during the closing operation. For this purpose, an end stop 14 is formed in the pivoting region of the locking lever 4 at the gate 10. It is irrelevant whether the locking lever 4 comes to rest with the hinge-side end or on the slide rider 8 at the end stop 14 in the second open position. In essence, in the second opening position, the receptacle 5 is released such that a complete lifting of the lid 2 is possible. In the present case, the first pressure plate 6 is outside the receptacle 5. Thus, a loose laying of the cover 2 is prevented during the closing process, the receptacle 5 comes to the second pressure plate 7 as a stop to the plant. In this case, the axial adjusting movement of the locking lever 4 is limited by an axial stop 16 directly or indirectly arranged on the locking lever 4. The lid 2 can be closed only after the closure lever 4 has been moved from the second opening position over the first opening position and the screwing into the closed position.

6 shows a further exemplary embodiment with a closure lever 4, in which the joint is formed from a fastening device 15 arranged on the container with a pivot pin 9 rotatably mounted. In this case, the hinge pin 9 comprises the mating thread for screwing in the thread on the hinge-side end of the locking lever 4, so that the locking lever 4 is directly connected to the hinge bolt 9. is screwed. The embodiment shown provides that the fastening device 15 consists of three flat elements, which are arranged in a U-shape. In this case, a recess 17 is provided in the surface parallel to the hinge pin 9, in which the hinge-side end of the locking lever 4 is screwed. The locking lever 4 is screwed by means of the actuating element 1 1 in the hinge pin 9 in a control range S in the recess 17. The direction of the locking lever 4 is thus fixed in such a way that the first pressure disk 6 is held above the receptacle 5 and the second pressure disk 7 below the receptacle 5.

It should be noted that the embodiment of the invention is not limited to the embodiments described in Figures 1 to 6, but that a plurality of variants is possible. In particular, the shape and arrangement of the locking lever and the execution of the attacks and recordings may differ from the security fasteners shown. Furthermore, the safety locks are suitable for both hinged, as well as hinged lid.

The invention thus provides a decisive contribution to the improvement of security closures for a container whose opening can be closed with a lid, so that a loose laying of the lid and an associated uncontrolled start-up of safety-related components can be prevented.

Claims

claims

A safety closure for a container (1) whose opening can be closed by a cover (2), with a closure lever (4) which can be brought from a closed position into a first opening position, the lid (2) being lifted by a first path but a complete lifting of the cover (2) is blocked, and the locking lever (4) can be brought from the first opening position into a second opening position, which allows the complete lifting of the cover (2),

characterized,

the closure lever (4) comes into abutment in the second opening position on an end stop (14) which is selected so that the lid (2) strikes against a stop (7) of the closing lever (4) during the closing operation before being laid loose the lid (2) on the opening of the container (1) is possible and that the lid (2) can be closed from the second opening position via the first open position to the closed position only after the closure lever (4) has been moved.

2. Safety closure according to claim 1,

characterized,

in that the closure lever (4) is pivotably arranged in a swivel area via a hinge on the container (1), wherein the closure lever (4) can be inserted into a receptacle (5) arranged indirectly or directly on the lid (2).

3. Safety closure according to claim 2,

characterized,

the receptacle (5) arranged on the cover (2) at least partially surrounds the closing lever (4) in the outer circumference and is in particular fork-shaped. Safety closure according to one of claims 1 to 3,

characterized,

in that a first and / or a second pressure disk (6, 7) are adjustably arranged on the closure lever (4).

Safety closure according to claim 4,

characterized,

the first and the second thrust washer (6, 7) are adjustable via an actuating element (11) along the axis of the locking lever (4), wherein the cover (2) is lifted by the first thrust washer (6) via the receptacle (5) Container (1) is pressed and by means of the second pressure disc (7) a positive opening of the lid (2), and wherein the second pressure disc (7) forms the stop of the locking lever (4), against which the lid (2) abuts during the closing operation ,

Safety closure according to one of claims 1 to 5,

characterized,

in that an end stop (14) is arranged in the swiveling range of the locking lever (4) against which the locking lever (4) comes into abutment in the second opening position, the first thrust washer (6) lying outside the seat (5) in this second opening position and the lid (2) comes to rest against the second thrust washer (7) as a stop during the closing process.

Safety closure according to one of claims 2 to 6,

characterized,

in that the closure lever (4) has a thread on the joint side, the closure lever (4) having a mating thread formed indirectly and / or directly on the joint radially to the joint axis (9), in an adjustment region S which is both the

Includes closed position and as well as the first opening position, can be screwed.

8. Security closure according to claim 7,

characterized,

in that the locking lever (4) comprises an axial end stop (16) on which the locking lever (4) comes into abutment when adjusted along the axis of the locking lever (4) at least in the second opening position.

9. Safety closure according to one of claims 2 to 8,

characterized,

in that the joint is formed from a link (10) arranged on the container (1) and a link rider (8) arranged pivotably via a hinge pin (9).

10. Safety closure according to claim 9,

characterized,

in that the link rider (8) comprises the mating thread through which the joint-side end of the locking lever (4) in the adjusting region S, starting from the axial end stop (16), at which the locking lever (4) from the second to the first open position is pivotable, in a groove (13) of the gate is screwed, in which the closure lever (4) with the first pressure disc (6) above the receptacle (5) and the second pressure disc (7) below the receptacle (5) is held.

11. Safety closure according to one of claims 2 to 8,

characterized,

in that the joint is formed from a fastening device (15) arranged on the container (1) with a pivotably mounted hinge pin (9), wherein the hinge pin (9) comprises the mating thread for screwing in the thread on the locking lever (4).

12. Safety closure according to claim 11,

characterized,

in that the fastening device (15) is U-shaped, wherein a surface having a recess (17) is arranged parallel to the hinge axis, and wherein the recess (17) receives the hinge-side end of the locking lever (4) along the adjusting region S, in order to prevent the Locking lever (4) with the first thrust washer (6) above the receptacle (5) and the second thrust washer (7) below the receptacle (5) to keep.

13. Security closure according to one of claims 1 to 12,

characterized,

in that the second pressure disc (7) for positively opening the lid (2) is arranged along the axis of the locking lever (4) at a distance D from the articulation axis (9) in order to lift the receptacle (5) within the setting range S.

14. Safety closure according to one of claims 1 to 13,

characterized,

the container (1) or the cover (2) comprises a sensor device (12) which determines the opening state of the container (1) and controls the shutdown of safety-relevant components before and / or during the mechanical release of the cover (2).

15. Security closure according to one of claims 1 to 14,

characterized,

that the container (1) is a pressure vessel.