EP2944746A1 - Fastener - Google Patents

Abstract

The invention relates to a closure (10) for detachably connecting a cover element to an environmental structure with a tensioning lever (12) which is pivotably connected to an armature (16) in such a way that the cover element can be connected to the surrounding structure by pivoting the tensioning lever (12) , In the closed state, the tensioning lever (12) can be secured via a securing pin (38) which can be pushed through through openings (36) provided in its side walls. According to the invention, a swivel element (26) pivotable when the lid element is closed can be pivoted out of a position in which it blocks the path between the openings (36) provided in the side walls of the clamping lever (12). In this way, an integrated genuine second mechanical security level can be created, which completely prevents a malfunction due to incorrect operation of the closure (10).

Description

The invention relates to a closure for releasably connecting a cover element with an environmental structure. In many applications, it is desirable to quickly and securely connect lid members to the environmental structure.

The most common type of connection of a cover element with the surrounding structure is a conventional screw connection, for example by means of hexagon screws and lock washers. The problem with this inexpensive connection, however, are the slow assembly and disassembly and the lack of rapid visual control. Thus, it is not easy to see, with a visual check, whether the fitting has been tightened correctly, that is, the correct torque has been applied during tightening.

For the detachable connection of cover elements with an environmental structure, however, different quick-release closures are already in use. There are so-called quick release clamps (eg Camloc tension locks). On the other hand, compression rotary bolt locks, such as those of the Company Southco are offered in use. Although these prior art quick releases allow for rapid handling, but have at most an integrated mechanical security level, which clearly defines the state of the closure (open / closed). The correct connection through these quick-release fasteners is only conditionally visually controllable and thus their actual primary function with the closure alone is not ensured.

The object of the invention is to develop a generic closure such that it connects not only a cover element quickly and safely releasably connected to an environmental structure, with a mechanical security or first level of security is also provided here. Rather, the closure should still have a real integrated second mechanical security level, which completely prevents a malfunction that could result from incorrect operation of the closure. The closed or open position of the closure should also be visually recognizable, even from a distance.

This object is achieved in a generic closure by the combination of the features of claim 1.

Here, a closure for detachably connecting a cover element is provided with an environmental structure having a clamping lever which is pivotally connected to an armature such that by pivoting the clamping lever, the lid member with the surrounding structure is connectable, wherein the clamping lever via a through in its side walls provided openings hindurchsteckbaren safety pin in the closed state is securable. According to the invention, a pivotable pivoting element integrated in the closure of the cover element is pivotable out of a position in the mold so that the path between the openings provided in the side walls of the tensioning lever is blocked by the pivoting element when the clamping lever is closed but not correctly connected. By providing the pivotable pivoting element, an integrated genuine second mechanical locking plane has thus been created in the closure, which is a malfunction completely prevented by incorrect operation of the closure. The solution here consists in a special combination of Kompressionsdreh- and tension lever principle, wherein an integrated pivot member is provided, which releases the way to insert a locking bolt only when correctly closing the lid member.

Preferred embodiments of the invention will become apparent from the subsequent claims to the main claim.

Accordingly, the pivoting element is advantageously part of a pivotable pressure plate, which is held by a spring assembly in a blocking starting position, wherein the pressure plate is pivoted with correct connection of the cover element with the surrounding structure against the force of the spring assembly in an end position releasing the area between the opening. When connecting the lid member with the surrounding structure, the pressure plate, which is supported on the surrounding structure, pivoted against the spring force during the attraction of the armature with a corresponding pivoting of the clamping lever, whereby at the same time the pivot member is pivoted releasing the area between the openings of the clamping lever upwards , However, this pivoting against the force of the spring packs is only possible if the pressure plate is actually supported on the surrounding structure. For example, if the anchor is accidentally not positioned in the correct position below the surrounding structure when closing the shutter and so can not support the surrounding structure during pivoting of the clamping lever, the pressure plate also can not be supported on the surrounding structure, so as to counteract the force of Spring package to provide a pivoting of the pivoting element.

Particularly advantageously, the armature is defined in a base plate rotatably and displaceably guided. About the base plate, the anchor can be mounted with the clamping lever in the correct position on the cover element. About corresponding recesses or by appropriate shaping of the recess, through which the suitably shaped anchor is inserted therethrough, the rotational or displacement movement of the armature can be fixed.

According to a further advantageous embodiment of the invention, the pressure plate is pivotally mounted in the base plate. For this purpose, a corresponding slot may be provided in the base plate, through which passes a part of the pressure plate bent through 90 °, wherein the pressure plate on the base plate over widened shoulders (stop) can be supported laterally.

The base plate may have an upwardly bent nose, which serves as a guide during the closing of the clamping lever. The guide takes place in that the side walls of the clamping lever when pivoting down are guided laterally along the side wall of the bent nose.

Preferably, the pivoting element is designed as a gooseneck-shaped web on the front part of the pressure plate.

In the curved nose of the base plate, a slot may be excluded, in which the gooseneck-shaped web of the pivotal pressure plate is accommodated. This results in a particularly stable embodiment variant.

Advantageously, the gooseneck-shaped web together with the inserted securing bolt secure the clamping lever in its closed position.

Furthermore, at least one projection can be integrally formed on the clamping lever, which dips when closing the clamping lever in a corresponding recess. As a result, a lateral rotation of the clamping lever is effectively prevented even with corresponding lateral forces in the closed position.

Figur 1:

eine teilweise geschnittene perspektivische Darstellung einer Ausführungsform des erfindungsgemäßen Verschlusses;

Figur 2:

eine seitliche Darstellung des Verschlusses im Schnitt;

Figur 3:

eine Ansicht des Verschlusses von vorne;

Figur 4:

eine seitliche Darstellung des Verschlusses;

Figur 5:

eine Darstellung des Verschlusses von oben und

Figuren 6 und 7:

eine Darstellung des Verschlusses, die die Kinematik während des Öffnens und Verschließens zeigen.

Further features, details and advantages of the invention will become apparent from an embodiment shown in the drawing. Show it:

FIG. 1:

a partially sectioned perspective view of an embodiment of the closure according to the invention;

FIG. 2:

a side view of the closure in section;

FIG. 3:

a view of the closure from the front;

FIG. 4:

a side view of the closure;

FIG. 5:

a representation of the closure from above and

FIGS. 6 and 7:

a representation of the closure, showing the kinematics during opening and closing.

In the FIG. 1 is a perspective view of a closure 10 according to an embodiment of the present invention, with which a lid member not shown here in detail with an environmental structure is releasably connectable. The closure 10 has a clamping lever 12, which in the illustration according to FIG. 1 partially cut away to represent the entire mechanism. The clamping lever 12 is pivotally connected via a bolt 14 with an armature 16. The armature 16 is guided rotatably and displaceably in a base plate 18.

The clamping lever 12 is designed as a curved sheet metal construction and has on the bolt 14 each side of the armature 16 eccentric surfaces 20 on which it is ensured that when pivoting down the clamping lever 12 of the armature 16 is moved in the vertical direction.

The base plate 18 has both-sided slots 22. By screws not shown here, the base plate can be adjusted over the slots and bolted to the cover element also not shown here.

The base plate 18 has an upwardly bent nose 24, which serves as a guide during the closing of the clamping lever 12. When closed, the bent nose 24 secures the clamping lever 12 enclosing it against lateral loading.

The closure 10 also has a pressure plate 26 pivotally connected to the base plate 18. With its rear part, which is bent up by 90 °, the pressure plate 26 by a according FIG. 2 slot 28 shown in the base plate 18 and mounted on a shoulder-like widened stop 30 pivotally mounted relative to the base plate.

As in particular in cross-section according to FIG. 2 illustrated, the armature 16 is also passed through the pressure plate 26, wherein the armature 16 is rotatable and displaceable.

The front end of the pressure plate 26 is formed in the form of a gooseneck-shaped web 32. This gooseneck-shaped web 32 is slidably guided in a formed in the nose 24 of the base plate 18 central slot. The pressure plate 26 with the gooseneck-shaped web 32 forms a mechanical security element, which ensures the correct connection of a cover element with an environmental structure.

Between the base plate 18 and the pressure plate 26 is a cup spring package 34 which is threaded onto the shaft of the armature 16.

As from the sectional drawing according to FIG. 2 easily seen, with appropriate depressions of the clamping lever 12 of the armature 16 is pulled over the eccentric 20 upwards, so that the cover element not shown here with the environment structure also not shown here is firmly connected together by both are pressed together. By this pressure, the pressure plate 26 is pivoted against the spring force of the disc spring assembly 34 relative to the base plate 18 upwards. Thus, the gooseneck-shaped web extension 32 of the pressure plate 26 is pivoted upward at the same time. As a result, the space between two provided in the corresponding side walls of the closed clamping lever 12 openings 36 is released, so that a securing bolt 38 can be pushed through the corresponding openings 36. The safety pin 36 is used in the closed state for additional securing of the closure 10. This is inserted through the corresponding openings 36 in the side walls of the closed clamping lever 12, whereby it extends below the nose 24 of the base plate 18. The closure 10 can therefore not be opened because the securing bolt 38 rests against the inside of the nose of the base plate 24.

A second level of security consists in the fact that the locking bolt 38 can only be inserted through the corresponding openings 36 in the side walls of the clamping lever 12 when the closure 10 has really been properly closed. This reliably precludes a malfunction of the closure 10.

In the following, the second level of security is explained by the description of the closing process.

In the open state, the clamping lever 12 of the closure 10 is in a lying position normal to the plane of symmetry of the base plate 18. The armature 16 is applied to the pressure plate 26 at. To close the clamping lever 12 is initially opened, which is due to the eccentric rolling curve of the cam surfaces 20 of the clamping lever 12, the anchor lowers and is introduced into the opposite profile of the surrounding structure. The cover element is not directly itself, but at each closure position only on the underside of the pressure plate 26 on the opposite profile of the environmental structure on the outside. In the unfolded position of the clamping lever 12 is now rotated counterclockwise by 90 ° and thus the armature 16 within the mating profile of the surrounding structure, as the basis of the FIG. 6 is shown.

By folding down the clamping lever 12 and positioning the clamping lever 12 designed as a hollow sheet metal structure over the nose 24 of the base plate 18 in the lying position, the armature is now pulled back over the eccentric discs 20 and thus presses the pressure plate against the intermediate profile wall of the surrounding structure Disc spring package 34. The closing force of the clamping lever 12 and the biasing force of the closure 10 is thus defined by the compression of the disc spring package 34. At the same time during the closing operation by the pressing of the pressure plate 26 via the rear pivot axis in the slot 28 with the base plate 18, the front gooseneck-shaped web 32 is raised. In the correctly closed state of the closure 10 is defined by the openings 36 through hole of the clamping lever for receiving the securing bolt 38 is released.

In the case of a faulty operation, for example, when the armature 16 does not engage under the mating profile of the surrounding structure, the armature 16 lies with its underside on the outside on the opposite profile of the surrounding structure. When folding down the clamping lever 12 in the closed position, the armature 16 is indeed attracted. But there is no power transmission to the pressure plate 26 and thus no compression of the plate springs of the disc spring package 34 by the absence of the counter-profile wall of the environment structure between armature 16 and pressure plate 26. Thus, no pivotal movement of the pressure plate, so that the front goose neck-shaped web 32 of the pressure plate 26 does not change its position and thus does not release the through hole between the openings 36 of the lying clamping lever 12. Thus, it is no longer possible that when not done correctly closing the locking pin 38 is inserted through the lever.

The FIG. 6 schematically shows the kinematics of the shutter 10 when opening. First, the safety pin 38 is pulled out in the direction of arrow 1. Subsequently, the clamping lever 12 is pivoted upwards and rotated by 90 °. Finally he is panned down again.

The armature 16 can now be pulled out through the corresponding slot-shaped opening in the surrounding structure, which is to be connected to the cover element.

FIG. 7 on the other hand shows the closing process. Here, the armature 16 is initially positioned over the clamping lever 12 so that it can be passed through the corresponding slot opening. By corresponding pivoting of the clamping lever of the armature 16 is pivoted down and passed through the slot of the surrounding structure. After 90 ° pivoting counterclockwise and pivoting down the clamping lever 12, the armature 16 is tightened again and the surrounding structure is firmly connected to the lid member. Anschießend the locking pin 38 is inserted in the direction of arrow 2.

Claims (9)

Closure for releasably connecting a cover element with an environmental structure with a clamping lever which is pivotally connected to an armature such that the cover element can be connected to the environmental structure by pivoting the tensioning lever, wherein the clamping lever in the closed state can be pushed through an opening provided in its side walls Securing bolt is securable,
characterized,
in that a pivoting element, which can be pivoted when the cover element is connected to an environmental structure, can be pivoted out of a position in which it blocks the path between the openings provided in the side walls of the tensioning lever for insertion of the safety lever. Closure according to claim 1, characterized in that the pivoting element is part of a pivotable pressure plate, which is held by a spring assembly in a blocking starting position, wherein the pressure plate with correct connection of the cover element with the surrounding structure against the force of the spring assembly in a the area between the Openings opening end position is pivoted. Closure according to claim 1 or 2, characterized in that the armature is guided rotatably and displaceably in a base plate. Closure according to claim 3, characterized in that the pressure plate is pivotally mounted in the base plate. Closure according to one of the preceding claims, characterized in that the base plate has an upwardly bent nose, which serves as a guide during the closing of the clamping lever. Closure according to one of the preceding claims, characterized in that the pivoting element is designed as a gooseneck-shaped web on the front part of the pressure plate. Closure according to claim 6, characterized in that in the curved nose of the base plate, a slot is excluded, in which the gooseneck-shaped web of the pivotable pressure plate is accommodated. Closure according to claim 7, characterized in that the gooseneck-shaped web together with the inserted securing bolt secures the clamping lever in its closed position. Closure according to one of the preceding claims, characterized in that on the clamping lever at least one projection is formed, which dips when closing the clamping lever in a corresponding recess.

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