ES2349945T3 - Closure for a transport container - Google Patents

Abstract

Closure for a transport container, which has two parts connected to each other, and in which the closure is arranged in a clamping flange on a first cover (1) and the movable locking hook (14) is arranged inclined on a second cover (2), said hook being fitted behind the clamping flange in a closed position, characterized in that, at least one spring (18) is arranged so that the locking hook (14) is pushed towards the bottom of the second cover (2) in a rest position.

Description

Closure for a transport container.

The invention relates to a closure for a transport container according to the preamble of claim 1.

The closures according to the preamble are also called butterfly or butterfly closures and have been known for a long time, for example by US 3,516,125. Closures of this type are frequently used in transport containers for instruments and equipment, which can be stacked on means of transport, such as airplanes and trucks. To protect the closures, these are made in such a way that, thanks to the use of the shells, the closing mechanism does not protrude from the surface of the transport container, at least not in the closed state.

However, it has been shown that also in the unclosed state it is an inconvenience that the closing mechanism protrudes from the surface, which can, for example, pose a danger of accidents. To overcome this inconvenience, in a closure that has been disclosed by US 5,511,834 according to the preamble of the main claim, the movement towards the outside of the closing hook caused by a spring is limited by suitable constructive measures. However, in this way these drawbacks of the butterfly closures known so far could only be insufficiently avoided.

Another closure, although only with a shell, is known from DE 198 04 582 A1.

The closure according to the invention is characterized in that at least one spring is arranged in such a way that the closing hook is pressed in the direction of the bottom of the second shell in a rest position. In this way it is guaranteed that the closing hook and the parts attached thereto are tightened by the spring inside the shell, both in an open position and in a closed position.

So that the closing hook must not be pulled outwards when the closure is unlocked, according to an advantageous configuration, at least one other spring is provided, whose force action is oriented such that the closing hook can only fit behind the closing edge with pressure from the outside.

In order not to have to lift the closing hook in a movement thereof to reach the closing edge, according to a variant it is provided that a chamfer is arranged in the first shell, which guides the closing hook during a movement towards the edge closing from the resting position to the closing edge.

Alternatively or additionally, this objective can also be achieved because the closing hook is provided with a chamfer, which guides the closing hook in a movement in the direction of the closing edge from the rest position to the closing edge.

An advantageous configuration of the invention provides that the closing edge is part of a hole in a closing housing. Here it is preferably provided that the hole is closed by the other spring which, in case of a pressure from the outside, releases the hole.

In this configuration it can also be provided that the force of the other spring is greater than the force exerted by the closing hook by the action of the spring on the other spring.

An advantageous embodiment of this configuration also provides for the second spring to be a leaf spring, which embosses a hole in the area of the closure housing. Thus, in the unclosed or non-locked state, the hole is closed and, in addition, when opening it, a displacement of the closing hook is possible without other measures, for example, without a lifting of the closing hook.

In known butterfly closures, the movement of the closing hook is carried out by means of an eccentric, which is rotatable with the aid of a wing-shaped handle. In order to reduce even more that parts of the closure in the closure according to the invention stand out, according to a variant it is provided that a nut, which serves by means of an eccentric for the movement of the closing hook, is rotatable with the aid of a wing-shaped handle that pins, which fit in recesses of the nut, are molded into substantially 90 ° bent portions of the wing-shaped handle.

In another advantageous embodiment of the invention, a generic closure is characterized in that the closing hook can be tightened in the direction of the bottom of the second shell in a resting position, and because a lifter that is below the closing hook cooperates in such a way with an elevation in the bottom of the second shell that, when turning the nut, the closing hook can be lifted thanks to the lifter that slides during the opening of the closure over the elevation leaving its resting position and being able to lower during the closure corresponding to the rest position.

In another advantageous configuration of this embodiment it is provided that the lifter is another rotating eccentric with the nut. This embodiment can be realized in such a way that the other eccentric has the shape of a spherical cap.

Another advantageous embodiment provides that the lifter is arranged on the closing hook. This embodiment can be configured in a particularly simple way such that the lifter is formed by a folding of the closing hook. In addition, it is possible that the closing edge is part of a hole in a closing housing. Another advantageous configuration that can be manufactured in an economical manner provides that the elevation at the bottom of the second shell is embossed.

Examples of embodiment of the invention are represented in the drawing with the help of several figures and in the description set forth below they will be explained in more detail. They show:

Figure 1 three views of the exemplary embodiment;

Figure 2 a longitudinal section in the open position of the transport container not shown;

Figure 3 the longitudinal section in the closed position of the transport container during the interlocking process;

Figure 4, the interlocked closure;

Figure 5 parts of another exemplary embodiment;

Figure 6 three views of another advantageous configuration of the invention;

Figure 7 a longitudinal section of another embodiment of the configuration according to Figure 6 in the position

open of the transport container not shown, as well as the longitudinal cut in position

closed of the transport container with the lock unlocked and the lock locked;

Figure 8 different positions of the wing-shaped handle and of the closing hook of the embodiment according to Figure 6 and

Figure 9 shows a longitudinal section of another embodiment of the embodiment according to Figures 6 to 8 in three positions.

For the housing of the closure, a first shell 1 and a second shell 2 are used, which can be mounted embedded in the two parts of the container to be closed (lid and container), for which a flange 3, respectively, is provided. 4 with corresponding holes for rivets or screws. In 6, 7, 8, 9, edges 3, 4 are angled for adaptation to reinforcements of the edges of the container and the lid.

The shell 1 carries a closing housing 10, in which there is a leaf spring 11, which closes a hole 12 in the unlocked state (Figures 2 and 3), and which is therefore provided with a corresponding embossing 13a. The closing housing 10 is provided with a chamfer 10, which raises the closing hook 14 when closing the transport container.

The closing hook 14 is housed in a guide 15 movably in the longitudinal direction. For the movement or movement of the closing hook 14, a nut 21 is used, which acts on the closing hook by means of an eccentric not shown in detail. By turning in a wing-shaped handle 16, the closing hook 14 can be moved (shortened or elongated). The guide 15 is pivotally housed in another housing 17, which is mounted at the bottom of the second shell 2 by squeezing a leaf spring 18 (Figures 2 to 4) the guide and, therefore, the closing hook in the direction towards the bottom of the shell 2.

A wire spring 19 serves as an axis for the tilting guide 15 and is housed in oblong holes not shown in the housing 17, while the ends of the wire spring are fixed. In this way, a defined force is exerted when locking the closure, that is, when tightening the closing hook 1 between the two shells 1, 2.

Figure 2 shows the two parts of the closure away from each other, as presented in the open transport container. In Figure 3, the two parts of the transport container are embedded in each other, so that the closing hook slides through a chamfer 20 over the closing housing 10. Since the leaf spring 11 exerts a greater force on the closing hook that the spring 18, for closing and interlocking, a force must be exerted in the direction of the date 25 on the closing hook 14. Thus, according to Figure 4 the closing hook is pressed into the hole 12, following which the closing hook 14 is tensioned against the action of the wire spring 19 by a rotation in the wing-shaped handle 16. The movement of the closing hook 14 is carried out by means of a nut 21 rotating, in which a pin 22 is arranged eccentrically, which fits into a corresponding recess of the guide 15.

In the wing-shaped handle 16, in areas 23, 24 bent at right angles, cams are molded, which fit into corresponding recesses in the nut 21. The cams are rectangular and are loaded by a disc spring not represented in such a way. that the wing-shaped handle 16 fits in the flat drawn position or in an upwardly oriented position.

Figure 5 shows parts of another exemplary embodiment, in which a closing hook 14 'tilting in the direction of the double arrow 30 fits into the closing position behind a closing edge 26, which is formed by a rail 27 provided in the opening 1. As in the first embodiment, a leaf spring 18 is provided, which presses the guide 15 and, therefore, the closing hook 14 'downwards. Another leaf spring 28 prevents the closure from closing before exerting pressure on the guide 15 in the direction of the arrow 29.

Other advantageous embodiments of the closure according to the invention are shown in Figures 6 to 9.

For the housing of the closure serve a first 1 ’and a second 2’, which can be mounted from

form embedded in the two parts of the container to be closed (lid and container), for which it is planned

respectively a 3 ’, 4’ flange with corresponding holes for rivets or screws. The 3 ’, 4’ flanges are angled into 6 ’, 7’, 8 ’, 9’, for adaptation to the container and lid closure profiles. Shell 1 ’carries a closing housing 10’ with a hole 12 ’.

The closing hook 14 "is housed in a guide 15’ mobile in the longitudinal direction. For the movement

or the displacement of the closing hook 14 "serves a nut 21", which acts by means of an eccentric not shown in detail on the closing hook 14 ". By turning in a wing-shaped handle 16 ’, the closing hook 14" can be moved (shortened or elongated). The guide 15 'is pivotally housed in another housing 17', which is mounted on the bottom of the second shell 2 ', by tightening a leaf spring 18' (Figures 7 and 9) the guide and, therefore, the closing hook in the direction of the bottom of the shell 2 '.

A wire spring 19 ’serves as an axis for the tilting guide 15’ and is housed in oblong holes not shown in the housing 17 ’, while the ends of the wire spring are fixed. In this way a defined force is exerted when locking the closure, that is to say, by tightening the closing hook 14 "between the two shells 1’, 2 ’, despite the existing tolerances.

Figure 7a shows the two parts of the closure away from each other, as presented in the open transport container. In Figure 7b, the two parts of the transport container are embedded in each other, the closure hook 14 "being located above the hole 12". In this way it is achieved that by means of a turn of the nut 21 ’an eccentric 13’ in the form of a cap slides over an elevation 11 ’at the bottom of the second shell 2’. During this turn (Figure 7b), the closing hook 14 ’is further advanced to such an extent that in the subsequent interlocking process (Figure 7c) it can fit into the hole 12’.

By turning in the opposite direction, according to Figure 7c, the closing hook 14 "is pressed into the hole 12 ', following which the closing hook 14" is tensioned against the action of the spring of wire 19 'by a twist on the wing-shaped handle 16'. The movement of the closing hook 14 "is carried out by means of a pin 22’ arranged eccentrically in the rotating nut 21 ’.

In the wing-shaped handle 16 ’, in zones 23’, 24 ’bent at right angles, cams are molded, which fit into corresponding recesses in the 21’ nut. The cams are rectangular and are loaded by a disc spring not shown in such a way that the wing-shaped handle 16 ’fits in the flat drawn position or in an upwardly oriented position.

Figures 8a to 8d3 show parts of the embodiment according to Figures 6 and 7 in various phases of movement during the opening of the closure. The parts, that is, the spherical cap 13 ', the elevation 11' at the bottom of the second shell and the turning point of the nut 21 ', which in the plan view from above in principle are not visible, are represented Like circles Figure 8a shows the zero position with the closure closed, the closure hook 14 "protruding only slightly from the guide 15".

Figures 8b, 8c show different positions during opening. During this process, the closing hook 14 "is removed from the guide 15". In the position shown in Figure 8d, the closing hook has come out at 95%. In Figure 8d1, the spherical cap 13 'begins to slide over the elevation 11', whereby the closing hook 14 "begins with the upward movement, which passes through the position shown in Figure 8d2 and ends in the position final according to Figure 8d3. In this position, the lid of the transport container can be lifted. When closing, the development of the movement takes place in reverse order, that is, first lower and then close.

Figures 9a to 9c represent a second embodiment, for greater ease without the wing-shaped handle, in which the lifting of the closing hook 14 "'is carried out with the aid of a folding 31' on the closing hook 14 "', That when the closing hook 14"' is released from the guide 15 'it cooperates with an elevation 11 "at the bottom of the second shell 2'.

Figure 9a shows the closing position, Figure 9b an intermediate position, in which the closing hook 14 "'is expelled by a twist of the wing-shaped handle not shown in Figure 9, the folding 31' entering in contact with elevation 11 ”. When the closing hook 14 "'according to Figure 9c is further drawn out, the closing hook 14"' is lifted, so that the two shells and, therefore, the lid and the transport container, can move away of others.

Claims (17)

one.

 Closing for a transport container, which has two parts to be joined together, the closure having a first closing edge (26) arranged in a first shell (1) and a mobile closing hook (14), arranged in tilting form in a second shell (2), which in a closed position fits behind the closing edge, characterized in that at least one spring (18) is arranged such that the closing hook (14) is tightened in the direction towards the bottom of the second shell (2) in a rest position.

2.

 Closure according to claim 1, characterized in that at least one other spring (11) is provided, whose force action is oriented such that the closing hook can only fit behind the closing edge with pressure from the outside.

3.

 Closure according to one of claims 1 or 2, characterized in that a chamfer (10 ') is arranged in the first shell (1), which guides the closing hook (14) in the case of a movement towards the closing edge. (10) from the resting position to the closing edge (10).

Four.

 Closing according to one of claims 1 to 3, characterized in that the closing hook (14) is provided with a chamfer, which guides the closing hook in case of a movement in the direction towards the closing edge (10) from the position from rest to the closing edge (10).

5.

Closing according to one of claims 1 or 4, characterized in that the closing edge is part of a hole

(12) of a closing housing (10).

6.

 Closure according to claim 5, characterized in that the hole (12) is closed by the other spring (11), which releases the hole as soon as there is pressure from the outside.

7.

 Closure according to claim 6, characterized in that the force of the other spring (11) is greater than the force exerted by the closing hook (14) by the action of the spring (18) on the other spring (11).

8.

 Closure according to one of claims 6 or 7, characterized in that the other spring is a leaf spring (11), which has an embossing (13) in the area of the hole (12) of the closing housing (10).

9.

 Closing according to one of claims 2 to 4, characterized in that the other spring is arranged in such a way on the closing hook that in its resting position it closes the closing hook.

10.

 Closure according to one of the preceding claims, characterized in that a nut (21) that serves by means of an eccentric for the movement of the closing hook (14) is rotatable with the aid of a wing-shaped handle

(16) and because the pins that fit in the recesses of the nut (21) are molded into parts (23, 24) substantially bent 90 ° of the wing-shaped handle (16).

eleven.

 Closure according to claim 1, characterized in that a riser (13 ') that is located below the closing hook (14 ", 14"') cooperates in such a way with an elevation at the bottom of the second shell (2 ') that when the nut is turned, the closing hook can be lifted from its resting position by the lifter that slides over the elevation during opening of the closure and can be lowered correspondingly to the rest position during closing.

12.

 Closure according to claim 11, characterized in that the lifter is another eccentric (13 ') that can rotate with the nut.

13.

 Closure according to claim 12, characterized in that the other eccentric has the shape of a cap

spherical (13 ’).

14.

 Closure according to claim 11, characterized in that the lifter (13 ’) is arranged in the closure hook (14”).

fifteen.

 Closure according to claim 14, characterized in that the lifter is formed by a folding of the closing hook (14 ").

16.

 Closing according to one of claims 11 to 15, characterized in that the closing edge forms part of a hole (12 ’) of a closing housing (10’).

17.

 Closure according to one of claims 11 to 16, characterized in that the elevation (11 ’, 11”) at the bottom of the second shell is embossed.