EP4257504A1 - Container with a screw closure - Google Patents

Abstract

Container (1), in particular plastic container, preferably in the form of a bucket, with a closure (2) for closing the container (1) with: a closed cover plate (4), which is used to cover a container opening on a container edge (10) delimiting the container opening. is placeable; a locking ring (8) which can be placed over the cover plate (4) and screwed to the container (1), by means of which the cover plate (4) can be fixed on the container (1), and one for sealing the container opening between the container edge (10) and the sealing ring (6) arranged on the cover plate (4). The cover plate (4) has an edge section with a, in particular U-shaped, receiving section (12) which receives the container edge (10) and surrounds it radially from the inside and outside.

Description

Technical area

The present disclosure relates to a container, preferably a bucket that can be closed with a lid, in particular made of plastic, for the transport of dangerous goods.

Containers that are to be approved for the transport of dangerous goods must meet certain requirements in order to receive approval. To do this, the containers must pass a drop test and an internal pressure test. A drop test involves dropping the container from a certain height. The lid or closure of the container must not open when it hits the ground. During an internal pressure test, the sealed containers must withstand a certain pressure inside without the container leaking or the closure or lid detaching from the container.

It is known to equip containers with closures which consist of a cover plate and a separate screw ring or a locking ring with a thread.

From the US 2006 / 0 091 099 A1 a container is known which has an inner plate which closes an opening of the container. The plate is secured with a lid that is screwed onto the container. At least one sealing element is prepared between the plate and side walls of the container. The US 7,611,026 B1 and the US 9,359,117 B2 also show containers in which a cover plate is screwed onto the container through a lid with a thread.

The DE 600 05 333 T2 and the US 4,896,782 A each show bottle-shaped containers with a closure ring that fixes a cover plate, which closes a container opening, to a container edge.

What these containers have in common is that the protection against accidental opening or bursting during the drop test is not sufficient. The plate that is placed on the side walls of the container can shift or deform under high loads. Furthermore, the side walls of the container can deform. Then the plate would no longer lie over the entire opening of the container. As a result, the container could leak or fail the drop test.

It is therefore the object of the present disclosure to overcome or at least reduce the disadvantages of the prior art and preferably to provide a container that is particularly secure. In particular, the container must not open during the drop test.

This task is solved by a container with the features of claim 1.

The present disclosure relates to a container having a closure for closing the container. The container can be a plastic container. The container is preferably designed in the form of a bucket. The closure or lid is made up of several parts and has a cover plate, a closure ring and a seal or sealing ring (separate or molded onto the cover plate). The closed, impermeable or fluid and/or gas-tight cover plate serves to cover the container opening of the container and can be placed on a container edge delimiting the container opening. The locking ring can be placed on or above the cover plate and screwed to the container. By screwing on the locking ring, the cover plate (placed loosely on the container) is fixed on the container. The seal or sealing ring is arranged between the cover plate and the edge of the container and thus seals the container opening.

The closure ring preferably presses the sealing ring onto the upper edge of the container rim. This seals the transition between the container and the closure so that no liquid can leak out. The sealing ring can be molded or cast on the cover plate or inserted or injected as a molded part into the cover plate.

The cover plate has an edge section with a first receiving section, which accommodates the container edge and encompasses it radially from the inside and outside. The first receiving section is preferably U-shaped, more precisely ∩-shaped (in the shape of an inverted U).

The cover plate thus has a geometry on its (circumferential) edge, which accommodates the container edge or can be placed on the container edge and extends on an inside of the container edge (vertically upwards) to the top edge of the container edge and on an outside of the container edge extends in the opposite direction (downwards) towards the bottom of the container. The edge section of the cover plate thus encompasses the edge of the container on both sides or from the inside and from the outside. If the container wall and/or the lid plate deforms during a drop test, the deformation does not cause the closure to detach or open from the container. Rather, the adjacent/mutually encompassing geometries and upper edge deform equally and thus form a positive fit. The geometry thus stabilizes the container against deformation in the drop test. The closure does not open due to the positive fit. As a result, the cover plate closing the container opening is, on the one hand, positively connected to the container via the edge geometry in both radial directions and, on the other hand, non-positively connected to the container in the axial direction via the closure ring, which has proven to be a very strong and tight connection in various drop tests.

The cover plate also has a first circumferential projection or projections provided in the circumferential direction, which interact in a form-fitting manner in the axial direction with a second circumferential projection or projections provided in the circumferential direction of the closure ring. The first projection or projections of the cover plate work with the second projection or the projections of the locking ring together in such a way that when the locking ring is lifted from the container, the projections come into contact and the cover plate is also lifted.

On the other hand, the closure ring and cover plate have such an axial play that the closure ring can be moved axially by a certain amount relative to the cover plate, for example when screwed to the container. The first projection or the plurality of projections of the cover plate protrude radially outward from the first receiving portion of the cover plate. The second projection or multiple projections of the locking ring protrude radially inwardly from a collar of the locking ring. When the locking ring is unscrewed and raised, the second projection or plurality of projections of the locking ring axially abuts the first projection or plurality of projections of the cover plate. When the locking ring is lifted, the cover plate is lifted off together with the locking ring.

When the lid is lifted off, the locking ring and the lid plate act like a common component. However, the projections work together in such a way that the cover plate and the locking ring can be moved relative to one another in the circumferential direction. This means that the cover plate can be rotatable in the locking ring. This can be advantageous because the sealing ring makes it difficult for the cover plate to rotate or move on the edge of the container. When opening and closing the lid, it is therefore advantageous if the locking ring can be rotated on the edge of the container independently of the lid plate. When closing the container opening with the lid, the cover plate with the sealing ring can first be pressed onto the edge of the container. The cover plate can then sit relatively firmly and immovably on the edge of the container. The locking ring is then screwed shut relative to the cover plate. When opening the lid, the locking ring can also be screwed on relative to the cover plate.

Preferably, the closure ring and cover plate can be separated from one another when they have been removed from the container, for example by radially elastically stretching the closure ring and cover plate and axially guiding the projections past one another loosen, for example, to be able to clean both parts separately. This means that the locking ring and the cover plate can be clipped together (elastically).

In addition, the stable connection between closure and container can also accommodate high stacking loads when several containers or buckets are stacked on top of each other, especially on the lid.

Advantageous developments of the present disclosure are the subject of the attached subclaims.

The closure ring can have an edge section with a second, in particular U-shaped or ∩-shaped, receiving section, which receives the first receiving section of the cover plate and surrounds it radially from the inside and outside. This also results in a radial positive connection between the locking ring and the cover plate, which further increases the strength of the closure.

The cover plate can have an annular reinforcing section radially inside the first receiving section for reinforcing the radially inner part of the first receiving section. That is, that part of the edge section of the cover plate that surrounds the edge of the container from the inside can be reinforced. As a result, the stacking load of the container stacked above it on the lid can be better supported on the container wall and the stacking forces can be transferred to the container wall, so that the lid is relieved of load. This reinforcement also stabilizes the connection between the lid and the container, which protects the container against deformation during the drop test.

The reinforcing section can be designed as a circumferential, preferably V-shaped, bead with a plurality of radially extending and circumferentially spaced, preferably V-shaped, more precisely Λ-shaped (in the form of an inverted V), reinforcing ribs. This increases the rigidity of the cover plate, which prevents the cover plate from being dented.

At the radially outer end of the second receiving section of the closure ring there can be connected a collar which extends over the cover plate and has an (internal) thread section which can be screwed to an (external) thread section of a collar of the container which is arranged below the edge of the container. Since the stacking loads or impact forces are transmitted from the closure ring and the cover plate to the container via the second receiving sections, the screw connection between the closure ring and the container is outside the flow of forces and is therefore relieved.

The closure ring can have an annular contact surface and a plurality of centering sections radially within the second receiving section. The annular contact surface is used to stack an identical or compatible second container on the closure. The centering sections, which project radially inwards from the second receiving section and are spaced apart in the circumferential direction, serve to center or laterally fix an identical or compatible second container on the closure. The centering sections can be designed in the shape of a segment of a circle in order to accommodate the bottom part of a round bucket radially inside.

The cover plate can have an annular recess and a raised central section within the first receiving section, so that the closure ring can be placed with its side opposite the contact surface in the annular recess of the cover plate and the contact surface of the closure ring forms a flat surface flush with the central section of the cover plate. This means that the locking ring and the cover plate complement each other and together form a flat outer cover surface. More specifically, the raised central portion of the cover plate corresponds to and completes a central recess in the lock ring. This positive interlocking of the central section of the cover plate into the central recess of the locking ring also prevents a relative radial displacement of the locking ring and cover plate. The resulting flat surface is prepared and designed so that another container that is to be stacked on top of the first container can be placed on it. This means the other container is upright and on a solid surface. A This prevents the stack of containers from tipping over, or at least makes it less likely. Lateral slipping is prevented by the centering sections.

The second receiving section of the closure ring can have a circumferential bead on the inside, more precisely on the inside of the U-shape, which, when the closure ring is screwed onto the container, presses from the outside onto the first receiving section of the cover plate and indirectly seals the sealing ring onto the upper edge of the edge of the container. This ensures that an axial force is specifically applied to the seal at the point where the seal is located for secure sealing. This increases the contact pressure of the seal.

The closure ring can have a first radial step, in particular between the second receiving section and the threaded section, and the container can have a second radial step, in particular between the container edge and the threaded section, which come into contact when the closure ring is screwed onto the container, i.e. as stops serve and thus limit the screwing process. This prevents the closure from being overtightened and damaging the threaded sections, which could affect the reusability of the lid and/or container.

Alternatively, the locking ring has a rib which projects radially inwards from the circumferential collar of the locking ring. When the locking ring is closed, the rib collides with a stop on the container in order to define an end point for the closing. The stop is formed on the upper side wall portion of the container. When the locking ring is screwed onto the container, the rib is moved in the axial direction with each revolution. When the rib hits the stop on the container, the closure is closed. This limits the force or torque when closing to avoid damage.

The closure ring can have a locking geometry and the container can have a complementary locking geometry, which engage in a form-fitting manner when the closure is completely screwed on and prevent the closure from rotating relative to the container. This form-fitting locking mechanism prevents the lock from being overtightened in one direction and serves as first-opening protection in the other direction. The locking geometry can be a recess and the locking geometry on the container can be a rib or projection. Preferably, at least one of the two locking geometries is designed to be resilient, for example in the form of a spring tongue, whereby the positive connection, in particular for opening the closure, can be released by manually actuating the resilient locking geometry.

The locking ring and the container can each have a feedthrough, which is aligned with one another when fully screwed on, so that the locking ring and the container can be sealed with a (plug-in) seal. On the one hand, this serves to detect whether the container has already been opened and, on the other hand, to ensure that the container is also in a completely closed state.

The closure ring can have a further receiving section, in particular U-shaped or ∩-shaped, radially outside the second receiving section, which receives a circumferential rib on the collar of the container and encompasses it radially from the inside and outside. This results in (in addition to the radial positive connection between the closure ring and the cover plate) an (additional) radial positive connection between the closure and the container, which further relieves the load on the threaded sections screwed together when external loads are applied to the closure.

The sealing ring can form a first sealing point between the first receiving section and the container edge and a second sealing point between an outside of a container side wall and the first receiving section, which surrounds the container edge radially on the outside.

Furthermore, the closure ring can press the first receiving section, which accommodates the container edge and encompasses it radially from the inside and outside, from the radial outside against the sealing ring and thus the sealing ring against the container side wall.

Two redundant sealing points can thus be created, which improve the sealing ability of the closure. In particular, it can be prevented that the sealing ring loses contact with the closure and/or the container side wall due to a deformation of either the container side wall or the closure, and in particular the first receiving section, and thus the sealing effect of the sealing ring is reduced.

The combination of the external thread of the container and the internal thread of the locking ring can fix the locking ring on the cover plate in such a way that the locking ring exerts a force on the first receiving section in the direction of the edge of the container. The force in the direction of the container edge can press the first receiving section onto the first sealing point and thus seal it. Furthermore, the first receiving section can be pressed radially inwards by the collar when the thread is screwed on. The first receiving section can therefore exert a force on the second sealing point and press it against the outer wall of the container.

Short description of the characters

• Fig. 1 shows an isometric view of a container according to the disclosure with a closure;
• Fig. 2 shows an exploded view of the closure and the container according to the disclosure;
• Fig. 3 shows a side view of the container according to the disclosure with the closure;
• Fig. 4 shows a side view of the container according to the disclosure with a raised closure;
• Fig. 5 shows a detailed representation of a side view of the container according to the disclosure;
• Fig. 6 shows a sectional view through the container according to the disclosure with a sealing ring according to a first embodiment;
• Fig. 7 shows a sectional view through the container according to the disclosure with a sealing ring according to a second embodiment;
• Fig. 8 shows a sectional view through the container according to the disclosure with a sealing ring according to a third embodiment;
• Fig. 9 shows an isometric view of the lock ring;
• Fig. 10 shows an isometric view of an open container according to the disclosure;
• Fig. 11 shows a detailed representation of a side view of the closed container with the closure;
• Fig. 12 shows an isometric view of the closed container; and
• Fig. 13 shows a sectional view through the container according to the disclosure with the closure partially open.

Detailed description of the characters

Fig. 1 shows a container 1. The container 1 is, for example, a round plastic bucket and is closed with a lid or closure 2. The Closure 2 is designed to be rotationally symmetrical and has a cover plate 4, a sealing ring 6 and a closure ring 8.

Fig. 2 shows an exploded view of the closure 2 and the container 1. The cover plate 4 can be placed on a container edge 10, which delimits a container opening and covers the container opening. The closure ring 8 can in turn be placed over the cover plate 4 and screwed to the container 1. The cover plate 4 can thus be fixed on the container 1 by means of the locking ring 8. The sealing ring 6 is arranged between the container edge 10 and the cover plate 4 and seals the container opening.

The cover plate 4 has an edge section with a first, in particular U-shaped, receiving section 12, which can accommodate the container edge 10. The first receiving section 12 encompasses the container edge 10 radially from the inside and outside. The first receiving section 12 extends vertically upwards towards the edge of the container 10 and extends vertically downwards outside the container 1 along a container wall. Within the first receiving section 12, the cover plate 4 has an annular reinforcing section 14. The annular reinforcing section 14 reinforces the radially inner part of the first receiving section 12 and the part of the first receiving section 12 which surrounds the container edge 10 from the inside. The reinforcing section 14 has a circumferential bead 16. The bead 16 is preferably V-shaped. The bead 16 has a plurality of reinforcing ribs 18 which extend in the radial direction and are spaced apart in the circumferential direction. The reinforcing ribs 18 are preferably V-shaped and extend vertically upwards from the bead 16. The cover plate 4 also has an (inner) raised central section 20 in the middle.

The closure ring 8 has an edge section with a second receiving section 22. The second receiving section 22 is preferably U-shaped and can accommodate the first U-shaped receiving section 12 of the cover plate 4. The second receiving section 22 encompasses the first receiving section 12 radially from the inside and outside due to its U-shape. The locking ring 8 points at the radially outer end of the second receiving section 22 has a collar 24 which engages over the cover plate 4. The collar 24 protrudes (vertically downwards) from the second receiving section 22. The collar 24 protrudes in the direction of the container 1. The collar 24 has an internally threaded section 26 which can be screwed to an externally threaded section 28 of a collar 30 of the container 1 arranged below the container edge 10.

The closure ring 8 also has an annular contact surface 32 radially within the second receiving section 22 for stacking an identical or compatible second container 1 on the closure 2. A plurality of centering sections 34 project radially inwards from the second receiving section 22. The centering sections 34 are spaced apart in the circumferential direction and center the identical or compatible second container 1 on the closure 2. A side that is (axially) opposite the contact surface 32 rests on the cover surface of the cover plate 4. The central section 20 of the cover plate 4 is flush with the contact surface 32 of the locking ring 8. The raised central section 20 of the cover plate 4 corresponds to a central recess in the closure ring 8 and completes this to form a common (flat) surface (in Fig. 1 shown). The cover plate 4 has a type of recess radially outside the central section 20 in which the contact surface 32 rests.

The container 1 is approximately cylindrical, has a round container bottom, a container wall 36 which projects vertically from the container bottom, and the upper container edge 10, which delimits the (round) container opening. The container wall 36 has the collar 30 at the upper end, which protrudes radially from the remaining container wall 36. The collar 30 has the external thread section 28 for screwing the closure 2 onto the container 1. The container 1 also has a handle 38 for carrying the container 1. The handle 38 is rotatably attached to the collar 30.

Fig. 3 shows a side view of the container 1. The container 1 has a locking geometry, in particular a rib/projection 40. The rib 40 is formed on an upper side of the collar 30 of the container 1 and preferably extends vertically upwards in the direction of the closure 2. Fig. 4 shows a side view of the Open shutter 2. The shutter 2 is compared to Fig. 3 twisted. The externally threaded portion 28 of the container 1 is shown. The locking ring 8 has a locking geometry, in particular a recess 42. The latching geometry of the closure ring 8 is complementary to the latching geometry of the container 1. The rib 40 of the container 1 engages in a form-fitting manner in the latching geometry (recess 42) of the closure ring 8 when the closure 2 is completely screwed on. This intervention prevents a relative rotation of the closure 2 to the container 1, with at least one of the locking geometries being designed to be resilient and thereby the positive connection, in particular for opening the closure 2, can be released. The intervention is shown in the detailed view of a side view of the closed container 1 in Fig. 5 shown. In addition, the closure ring 8 and the container 1 each have a passage 44, which are aligned with one another when fully screwed on, so that the closure ring 8 and the container 1 can be sealed with a seal 46.

Fig. 6 shows a detail of a longitudinal section through the closure 2 on the container 1. The cover plate 4 has the central section 20 from the inside to the radial outside. Seen radially outward from the central section 20, the bead 16 adjoins the reinforcing ribs 18. The first receiving section 12 encompasses the container edge 10 from radially inside and outside. For this purpose, the first receiving section 12 extends vertically upwards towards the edge of the container 10 and extends vertically downwards outside the container 1 in the opposite direction. As a result, the first receiving section 12 extends outside the container 1 along the container edge 10. The first receiving section 12 thus forms the U-shape or the shape of an inverted U.

The closure ring 8 has the contact surface 32 radially on the inside, which extends radially inwards from the second receiving section 22. The locking ring 8 has the centering elements 34 radially outside of the contact surface 32. Following this, the second receiving section 22 is arranged radially on the outside. The closure ring 8 has the collar 24 at the radially outer end of the second receiving section 22. The internal thread section 26 is arranged on the collar 24, which screws the closure ring 8 to the external thread section 28 of the container 1.

The second receiving section 22 of the closure ring 8 has a circumferential bead 48 on the inside, which, when the closure ring 8 is screwed onto the container 1, presses from the outside onto the first receiving section 12 of the cover plate 4 and seals the sealing ring 6 onto the upper edge of the container rim 10 presses. The bead 48 is positioned inside the second U-shaped receiving section 22 and extends vertically downwards. The closure ring 8 further has a first radial step 50, which is arranged in particular between the second receiving section 22 and the threaded section 26. The container 1 also has a second radial step 52, which is positioned in particular between the container edge 10 and the threaded section 28. The two radial steps 50, 52 contact each other when the closure ring 8 is screwed onto the container 1 and thus limit the screwing process.

The cover plate 4 has a first circumferential projection 54 or a plurality of projections provided in the circumferential direction, which interact in a form-fitting manner in the axial direction with a second circumferential projection 56 or a plurality of projections provided in the circumferential direction or a rib on the locking ring 8. As a result, when the locking ring 8 is lifted from the container 1, the projections 54, 56 come into contact and the cover plate 4 is lifted with the locking ring 8. The closure ring 8 and the cover plate 4 have such an axial play that the closure ring 8 can be moved axially by a certain amount relative to the cover plate 4, for example when screwed to the container. Nevertheless, the locking ring 8 and the cover plate 4 can be separated from each other when removed from the container.

The closure ring 8 can also have a further, in particular U-shaped, receiving section radially outside the second receiving section 22, which receives a circumferential rib on the collar 30 of the container 1 and encompasses it radially from the inside and outside.

In a first embodiment, which is in the Fig. 6 is shown, the sealing ring 6 has the shape of a semicircle in cross section. The sealing ring 6 is compressed between the first receiving section 12 and the container rim 10 and seals the container opening. The sealing ring 6 therefore seals between the first receiving section 12 of the cover plate 4 and the container edge 10 of the container 1.

The sealing ring 6 can take different shapes. Fig. 7 shows the sealing ring 6 according to a further embodiment. In this embodiment, the sealing ring 6 extends along the container edge 10. That is, the sealing ring 6 forms two separate sealing points. A first sealing point 60 is arranged on the upper side wall termination of the container side wall. A second sealing point 62 is arranged on an outer wall of the side wall of the container. The second sealing point 62 is spaced apart from the first sealing point 60. The two sealing points 60, 62 create an optimized seal between the closure 2 and the container 1. The two spaced sealing points 60, 62 are designed to be redundant with one another in order to improve the sealing ability. Should one of the sealing points 60, 62 become leaky, for example because a plastic component such as the closure 2 or the container 1 is deformed, the other redundant sealing point seals the container opening and prevents liquids from escaping. The seal 6 does not rest on the container edge 10 between the two sealing points 60, 62. As a result, the seal 6 is very flexible and its shape can adapt to possible deformations of the adjacent components such as the cover plate 4 or the container edge 10.

The second sealing point 62 is arranged on the outer wall of the container rim 10 in such a way that the second sealing point 62 is in connection with the first receiving section 12, which surrounds the container rim 10 both radially from the inside and from the outside.

Fig. 8 shows the sealing ring 6 according to a further embodiment. The sealing ring 6 is teardrop-shaped and extends along the outside of the container rim 10. That is, the sealing ring 6 forms a single large sealing point, which, however, extends along the outside of the container rim 10. The sealing ring 6 therefore does not form an (approximately) point-shaped intersection with the container edge 10, but rather one Cutting line. Due to the larger contact surface of the sealing ring 6 on the container edge 10, the sealing effect of the sealing ring 6 can be improved. The sealing ring 6 ensures that no liquid can drip out of the container 1. However, the teardrop-shaped sealing ring 6 can still form the first sealing point 60 on the edge of the container and the second sealing point 62 between the outside of the container and the inside of the first receiving section 12.

The sealing ring 6 is preferably made of an elastic material. Therefore, the sealing ring 6 is flexible and can adapt to the shape of the container edge 10 and/or the first receiving section 12 even if the container edge 10 is deformed.

Fig. 9 shows an isometric view of the locking ring 8. The collar 24 protrudes from the contact area 32. The internally threaded section 26 is arranged within the collar 24. The (spring-elastic) recess 42 is arranged at one end of the collar 24. The recess 42 is compressible in one (axial) direction, i.e. towards the container 1 or away from the container 1. For this purpose, the recess 42 is designed, for example, as a spring tongue. As a result of the compression, the rib 40 and the recess 42 are no longer in mutual engagement and the closure 2 can be screwed on. In the circumferential direction of the closure ring 8, next to the recess 42, there is the passage 44 for the seal 46 (in Fig. 11 shown).

Fig. 10 shows the open container 1. The plurality of ribs 40 are formed on the collar 30 which projects radially outward from the container wall 36. The ribs 40 are preferably arranged vertically. The collar 30 also has a holder 58 for the handle 38. Fig. 11 shows in particular the rib 40 which is engaged with the recess 42. The seal 46 is pulled through the aligned bushings 44 and acts as a seal. The seal can be used to determine whether the container 1 has already been opened. Fig. 12 shows an isometric view of the closed container 1. The number of ribs 40 and the number of recesses 42 are each in engagement with one another. The plurality of ribs 40 are in engagement with the plurality of recesses 42.

Fig. 13 shows the closure 2, which has been partially unscrewed from the container 1. The first projection 54 of the cover plate 4 protrudes radially outward from the first receiving section 12. The second projection 56 of the closure ring 8 protrudes radially inward from the collar 30. The two projections 54, 56 work together in such a way that they both abut one another axially when the locking ring 8 is unscrewed. This is also in Fig. 13 shown. If the locking ring 8 is then lifted upwards, the projection 56 takes the cover plate 4 with it. So the cover plate 4 is lifted off together with the locking ring 8. However, the cover plate 4 is movable and in particular rotatable in the closure ring 8 relative to the closure ring 8 in the circumferential direction.

Reference symbol list

1

container

2

Clasp

4

Cover plate

6

sealing ring

8th

Lock ring

10

container edge

12

first receiving section of the cover plate

14

Reinforcement section

16

Beading

18

Reinforcing rib

20

Central section

22

second receiving section of the lock ring

24

first collar of the lockring

26

Internal thread section

28

Male thread section

30

second collar of the container

32

contact area

34

Centering sections

36

container wall

38

handle

40

rib

42

recess

44

execution

46

seal

48

bead

50

first stage of the lock ring

52

second stage of the container collar

54

first projection of the cover plate

56

second projection of the lock ring

58

bracket

60

first sealing point

62

second sealing point

Claims (11)

Container (1), in particular plastic container, preferably in the form of a bucket, with a closure (2) for closing the container (1) with: a closed cover plate (4) which can be placed on a container edge (10) delimiting the container opening to cover a container opening; a locking ring (8) which can be placed over the cover plate (4) and screwed to the container (1), by means of which the cover plate (4) can be fixed on the container (1), and a sealing ring (6) arranged to seal the container opening between the container edge (10) and the cover plate (4), wherein the cover plate (4) has an edge section with a, in particular U-shaped, receiving section (12) which receives the container edge (10) and surrounds it radially from the inside and outside, characterized in that the cover plate (4) has a circumferential projection (54) or a plurality of projections provided in the circumferential direction, which interact positively in the axial direction with a circumferential projection (56) or a plurality of projections of the locking ring (8) provided in the circumferential direction in such a way that when the locking ring is lifted (8) the projections (54, 56) come into contact with the container (1) and the cover plate (4) is also lifted. Container (1) according to claim 1, characterized in that the cover plate (4) has an annular reinforcing section (14) radially inside the first receiving section (12) for reinforcing the radially inner part of the first receiving section (10) which surrounds the container edge (10) from the inside ( 12), wherein the reinforcing section (14) is designed in particular as a circumferential, preferably v-shaped, bead (16) with a plurality of preferably v-shaped reinforcing ribs (18) extending in the radial direction and spaced apart in the circumferential direction. Container (1) according to claim 1 or 2, characterized in that the closure ring (8) has an edge section with a second, in particular U-shaped, receiving section (22) which accommodates the first, in particular U-shaped, receiving section (12). Cover plate (4) receives and encompasses radially from the inside and outside. Container (1) according to claim 3, characterized in that the radially outer end of the second receiving section (22) of the closure ring (8) is connected by a collar (24) which extends over the cover plate (4) and has an internally threaded section (26). can be screwed to an external thread section (28) of a collar (30) of the container (1) arranged below the container edge (10). Container (1) according to claim 3 or 4, characterized in that the closure ring (8) has radially within the second receiving section (22): an annular contact surface (32) for stacking an identical or compatible second container (1) on the closure (2); and a plurality of centering sections (34) projecting radially inwards from the second receiving section (22) and spaced apart in the circumferential direction for centering the identical or compatible second container (1) on the closure (2). Container (1) according to claim 5, characterized in that the closure ring (8) rests on the cover surface with the side opposite the contact surface (32) in an annular recess in the cover plate (4) and the cover plate (4) has an elevated, to Contact surface (32) has a flush central section (20). Container (1) according to one of claims 3 to 6, characterized in that the second receiving section (22) of the closure ring (8) has a circumferential bead (48) on the inside, which when the closure ring (8) is placed on the container (1) is screwed from the outside onto the first receiving section (12) of the cover plate (4) presses and presses the sealing ring (6) sealingly onto the upper edge of the container rim (10). Container (1) according to one of claims 3 to 7, characterized in that the closure ring (8) has a first radial step (50), in particular between the second receiving section (22) and the threaded section (26), and the container (1 ) has a second radial step (52), in particular between the container edge (10) and the threaded section (28), which come into contact when the locking ring (8) is screwed onto the container (1) and thus limit the screwing process. Container (1) according to one of claims 3 to 8, characterized in that the closure ring (8) has a further, in particular U-shaped, receiving section radially outside the second receiving section (22), which has a circumferential rib on the collar (30) of the Container (1) receives and encompasses radially from the inside and outside. Container (1) according to one of claims 1 to 9, characterized in that the closure ring (8) has a locking geometry, in particular a recess (42), and the container (1) has a complementary locking geometry, in particular a rib (40), which engage in a form-fitting manner when the closure (2) is completely screwed shut and prevent the closure (1) from rotating relative to the container (2), at least one of the locking geometries being designed to be resilient and thereby releasing the positive connection, in particular for opening the closure (2). can be. Container (1) according to one of claims 1 to 10, characterized in that the closure ring (8) and the container (1) each have a passage (44) which are aligned with one another when completely screwed on, so that the closure ring (8) and the container (1) can be sealed with a seal (46).

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