DE7835253U1 - A closable insulating container made of plastic, consisting of a cup and a lid, especially for ice cream - Google Patents

Description

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8118 / L / LÜ November 24, 1978

Ulrich Buchholtz KG, General- Pape Str. 10, 1000 Berlin 42

Lockable insulating container made of plastic, consisting of a cup and a lid, in particular for ice cream

The innovation relates to a cup and a lid Existing, lockable insulating container made of plastic, in particular for ice cream.

In a known and commercially available insulating vessel of this type, the cup consists of an extremely thin-walled inner cup made of injection molded plastic and an outer cup made of foam plastic, especially polystyrene, with the inner cup lying tightly against the outer cup. The lid is a thin plastic injection molded part. In this known insulating vessel, food to be protected from heat, in particular ice cream, can only be one

can be kept refrigerated for a relatively short time at room temperature of 20 C. The one located in this well-known isolation vessel Ice cream melts very quickly, especially when the known insulating container is held in the hand of a user, because then there is rapid heat transfer through the polystyrene to the ice cream.

Since the inner cup has closely into the outer cup fits _t a user of the isolation device known difficulties when removing the inner cup for the purpose of emptying. To do this, the user must try to grasp the narrow edge of the inner cup in order to pull the inner cup out of the outer cup. However, this is made more difficult due to the formation of negative pressure when pulling out the inner cup, which is closely matched to the outer cup.

The innovation, on the other hand, is based on the task of an insulating vessel of the type mentioned to create both a considerably longer storage time for food, in particular Makes ice cream possible at room temperature and ensures easy emptying.

To solve this problem, the innovation provides that the cup and the lid for thermal insulation of the interior of the vessel are formed from inner and outer walls arranged at a distance from one another and that the inner and outer walls of the cup on the The bottom and the upper free edge are easily detachable and the inner and outer walls of the lid are essentially at the circumferential edge are inextricably linked. Due to the distance between the inner and outer walls of the cup and the lid,

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the volume of air trapped in between provides good insulation of the interior space against the surrounding air, so that ζ. B. ice cream itself in the container according to the innovation remains cooled for a longer period of time at room temperatures of 20-25 C and does not melt. The new Isoliergeiäss is therefore particularly suitable for transporting a family pack of ice cream from a grocery store to the home of the buyer. According to the innovation, the two walls of the cover are inextricably linked to one another, whereas the inner and outer walls are of the beaker at the bottom and at the top free edge easily detachable, so that the inner beaker can be easily emptied of the insulating vessel can be removed from the outer cup.

Due to the special design of the releasable connection at the bottom of the cup according to dependent claim 2 it is achieved that through a pressure on the spherical surface-like outwardly bulging bottom surface of the cup-shaped elevation of the outer wall of the inner cup can be separated from the outer cup and pushed out of it, since it is almost automatic at the same time The connection between the inner and outer walls is loosened at the upper free edge.

Further advantageous refinements of the innovation result from the further subclaims.

The innovation is shown below using one in the drawings presented embodiment explained in more detail. Show it:

1 shows a partially cut-away side view of the insulation vessel according to the innovation,

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Fig. 2 shows an enlarged sectional view according to detail II in Fig. 1 by the releasable connection at the bottom of the cup and

3 shows an enlarged sectional view of detail III in FIG. 1 through the releasable connection between Outside and inside wall of the cup and through the free edge of the lid.

The insulating vessel shown in the figures is made of plastic from a cup 1 and a hermetically sealing lid 2. The insulating vessel is used in particular for storage of ice cream at room temperature. The cup 1 and the lid 2 are used to thermally isolate the interior of the vessel from one another spaced inner and outer walls 3, 4 and 5, respectively. The inner and outer walls 3 and 4 of the cup 1 are Easily detachable at the bottom and at the free edge and the inner and outer walls 5 and 6 of the cover 2 essentially at the circumferential edge inextricably linked.

The outer wall 3 forming the outer wall has its bottom surfaces Cup and the inner cup forming the inner wall 4 each have cup-shaped elevations 7 and 8 which extend into the interior of the cup are directed. In the area of the cup-shaped elevation 7 is the Outer wall 3 bulges outward in the manner of a spherical surface, as can be seen in particular in FIG. In contrast is the floor area the inner wall 4 in the region of the cup-shaped elevation 8 is essentially flat. The outside diameter of the cup-shaped Elevation 7 of the outer wall 3 fits with a narrow tolerance in the

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Inner diameter of the cup-shaped elevation 8 of the inner wall 4 in such a way that the two walls 3, 4 in the region of the cup-shaped elevations 7 and 8 touch essentially in the shape of a circle., and are held together under the pressure of the curvature of the cup-shaped elevation 7. As soon as a pressure on the bulge of the cup-shaped Elevation 7 of the outer wall 3 is exerted from the outside or from below, the outer diameter of the cup-shaped increases Elevation 7. Since the cup-shaped elevation 8 cannot yield laterally due to the flat bottom surface, it becomes the inner cup forming inner wall 4 is moved upwards in the direction of being pushed out of the outer cup formed by the outer wall 3, whereby the inner cup comes free from the outer cup.

The easily detachable connection on the upper free edge of this cup is through an outwardly directed space 9 between the inner and outer wall 4 or 3 overlapping web 10 of the inner wall 4, a circumferential at its free end, in Edge 11 slotted at intervals with an inwardly directed groove 12 and a nose 13 extending around the outside of the outer wall 3 which is locked into the groove 12 of the edge 11. The web 10 is a circular ring-shaped surrounding the inner wall 4 and itself at the upper edge of the ring-shaped part of the inner cup. The peripheral edge 11 extends at its free end essentially axially downwards in the direction of the bottom part of the inner cup formed by the cup-shaped elevation 8. This edge is provided with slots, not shown in detail, so that the outer wall 3 formed on the outside, radially outwardly directed nose 13 of the outer cup can snap into the groove 12 of the rim 11. Because of the slots in the edge 11

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the inner wall 4, which forms the inner cup, can easily detach itself from the outer wall 3 when there is pressure from the outside on the cup-shaped Elevation 7 of the outer cup is exercised and provided that no lid 2 is placed on the cup 1. The details described here are shown in Fig. 3 in the upper left area, to which reference is expressly made.

The essentially permanent connection between the inner and outer walls 14 or 15 of the cover 2 is made up of flatly abutting circumferential web surfaces 16, 17 and one on the free edge of the web surface 17 of the outer wall 15 attached circumferential edge 18 is formed, the inside a first circumferential nose 19 for snapping in of the web surface 16 of the inner wall 14 and a second, much larger circumferential nose 20, which the circumferential edge 11 of the cup 1 engages behind and snaps tightly. The web surfaces 16, 17 are formed from circular ring disks, which are attached to the free upper edges the interior or. Connect the outer wall 15, 16. The circumferential edge 18 is essentially perpendicular to the web surface 17. Die The first nose 19 running around the inside on the edge serves to snap the web surface 16 of the inner wall 14 into place in an essentially non-releasable manner so to form a substantially non-detachable cover structure. Here are the inner and outer walls 14 and 15 of the Lid 2 in the area of the interior of the cup 1 at a distance 21 from one another. The details described here result 3, in particular in the upper left and in the right area.

The inner walls 4, 14 and outer walls 3, 15 of the cup 1 and the Lids 2 are reinforced by webs 22 in the area of the enclosed spaces 9 and 21, respectively. The inner and outer walls 4, 14;

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3, 15 of the cup 1 and the lid 2 are each made in one piece Plastic formed, in particular from plastic injection molding.

Claims (5)

Protection claims 1. A lockable one consisting of a cup and a lid Insulated container made of plastic, in particular for ice cream, characterized in that the cup (1) and the lid (2) for thermal Insulation of the interior of the vessel from inner and outer walls arranged at a distance from one another (4, 14 or 3, 15) are formed and that the inner and outer walls (4 or 3) of the cup (1) at the bottom and at the upper free edge can be easily detached and the inner and outer walls (14 and 15) of the cover (2) are essentially non-detachably connected to one another at the circumferential edge are. 2. Isolation vessel according to claim 1, characterized in that the easily releasable connection at the bottom of the cup (1) from im essentially circular interlocking, cup-shaped elevations (7, 8) protruding into the interior of the cup (1) -2- the inner and outer walls (4 and 3) are formed, the bottom surface the cup-shaped elevation (7) of the outer wall (3) like a spherical surface arched outwards and the bottom surface of the inner wall (4) in the region of the cup-shaped elevation (8) essentially is even. 3. Isolation vessel according to claim 1 and 2, characterized in that the easily releasable connection at the upper free edge of the Cup (1) through an outwardly directed space (9) between the inner and outer wall (4 or 3) overlapping Web (10) of the inner wall (4), a circumferential at its free end, at intervals slotted edge (11) with an inwardly directed Groove (12) and a nose running around the outside of the outer wall (3) (13) is formed, which is engaged in the groove (12) of the edge (11). 4. Isolation vessel according to one of the preceding claims, characterized characterized in that the essentially non-detachable connection between the inner and outer walls (14 or 15) of the cover (2) is made circumferential web surfaces (16, 17) lying flat against one another and one at the free end of the web surface (17) of the outer wall (15) attached circumferential edge (18) are formed, the inside a first circumferential nose (19) for snapping in the web surface (16) the inner wall (14) and a second, substantially larger circumferential nose (20) which encompasses the circumferential edge (11) of the cup (1) is engaged behind and sealingly. 5. Isolation vessel according to one of the preceding claims, characterized characterized in that the inner and outer walls (4, 14; 3, 15) of the cup (1) and the lid (2) are each made in one piece from plastic, are formed in particular from plastic injection molding.