WO2013107605A2

WO2013107605A2 - Heat-insulating door for a refrigeration device

Info

Publication number: WO2013107605A2
Application number: PCT/EP2012/076986
Authority: WO
Inventors: Christoph Becke; Max Eicher; Swetlana Gorodezki; Maike Kirschbaum; Martin Müller; Ralph Staud; Thomas Tischer
Original assignee: BSH Bosch und Siemens Hausgeräte GmbH
Priority date: 2012-01-20
Filing date: 2012-12-27
Publication date: 2013-07-25
Also published as: WO2013107605A3; DE102012200813A1

Abstract

A heat-insulating door for a domestic refrigeration device comprises a plate-shaped insulation body which is delimited on two first flanks by border strips (4) and on second flanks (10, 11), connecting the first flanks, by profiled strips (13, 24), the border strips (4) having at least one respective hinge housing (5) which projects into the interior of the door (2). At least one of the profiled strips (13, 24) is supported on the hinge housings (5) relative to pressure directed from the insulation body outwards.

Description

Heat-insulating door for a refrigeration device

The present invention relates to a heat-insulating door and a refrigerator, in particular a household refrigerator, to which such a door is used.

It is known per se to manufacture refrigeration appliance doors by bending a sheet metal blank at two opposite edges to form a front side of the door and two profiled strips forming at least part of lateral flanks of the door. A molded plastic rear wall of the door is fastened between the profile strips, and the hollow body thus obtained is closed at its upper and lower flanks by plugged-Moldings and foamed to form a flat-shaped Dämmstoffkörper inside. To make sure the door is closed

Foaming is not deformed and no foam escapes, the upper and lower edges of the sheet metal blank must be received in grooves of the end strips or at least on their outsides in places surrounded by webs of the end strips, which support the sheet blank against the pressure of the foam. Such a visible on the outside of the sheet blank ridge is considered aesthetic

felt unsatisfactory; There is also a high risk that when a foreign object hits the door, it will hit the exposed bar and damage it.

The object of the invention is to provide a structure for a heat-insulating door, which allows to secure lateral profile strips of the door in a safer and less conspicuous manner in their position. The problem is solved by using a heat-insulating door with plate-shaped

Insulating body, which is bounded on two first flanks by end strips and on these first flanks connecting second flanks by profiled strips, wherein the

End strips in each case at least one projecting into the interior of the door

Have a hinge bushing for a pivotable suspension of the door, at least one of the profile strips is supported against a directed from the insulating body outwardly pressure on the hinge bushings. Such a support can be created by the profile strip arranged on one of the second flanks facing away from this second flank

Wall area of the hinge bushes of the two end strips surrounds. Thus, the profile strip is pressed against the hinge bushes when foaming the door. The hinge bushing withstands the pressure easily, since it must be strong enough anyway, to carry when the door is finished, to carry their entire weight. Placing it inside the door protects it from damage by foreign objects.

Another possibility is that the profile strip and the hinge bushes form a tongue and groove connection.

If the hinge bushings each have two grooves or springs oriented in different directions, the tongue and groove connection can not be released under a pressure acting on the inside of the profile strip, even if the pressure does not act exactly perpendicular to the orientation of the grooves.

Preferably, the tongue and groove connections are each in the longitudinal direction of

Hinge bushes pushed into each other. In particular, if the hinge bushings as mentioned above have two differently oriented grooves or springs, such telescoping may be the easiest way to anchor the profile strip to the hinge bushes.

Preferably, the profile strip has an outwardly open longitudinal groove. When the hinge bushes at least partially engage in the longitudinal groove, anchoring the profile strip to the hinge bushings is very easy

Cross section of the profile strip possible.

The hinge bushes can be shaped so that they completely fill the cross section of the longitudinal groove in each case in an end region thereof.

It is particularly preferred that the end strips in each case two to each other

having mirror-image hinge bushings to selectively mount the door with Right or left stop to allow. The open longitudinal groove of a profile strip on a hinge-remote flank of the door can then be used as a handle for mounting the door.

The profile strips can be integrally connected to one another via a front panel of the door; such a one-piece front can e.g. be made by roll forming of sheets.

According to a particularly preferred embodiment, a front panel produced as a separate component is attached to front edges of the end strips and profile strips. Such a faceplate may be made of materials other than the strips, e.g. of glass. In such a multi-part construction is a resilient support of

Moldings on the hinge bushings of particular importance.

The profile strips can be expediently extruded from metal or plastic.

The invention also relates to a refrigeration device, in particular a household refrigerator, which is equipped with a heat-insulating door as described above.

Further features and advantages of the invention will become apparent from the following description of embodiments with reference to the accompanying figures. From this description and the figures are also features of the

Embodiments, which are not mentioned in the claims. Such features may also occur in combinations other than those specifically disclosed herein. Therefore, the fact that several such features are mentioned in the same sentence or in a different type of textual context does not justify the conclusion that they can occur only in the specific combination disclosed;

instead, it must be assumed that, of several such characteristics, it is also possible to omit or modify individual ones, provided that this is the case

Functionality of the invention is not in question. Show it:

Fig. 1 is a schematic perspective view of a two-door

Household refrigerating appliance according to the present invention; Fig. 2 is a schematic partial cross section of a door of

Refrigeration device along the plane II-II of Fig. 1;

3 shows a perspective partial view of a firing strip of the door shown in FIG. 2 according to a first embodiment of the invention;

4 shows a view similar to FIG. 3 of a firing strip according to a second embodiment;

Fig. 5 shows a portion of a plugging on the end strip of

Fig. 4 designed profile strip;

6 shows a partial view of a closure strip and a profile strip according to a third embodiment of the invention; Fig. 7 is a cross-section similar to Fig. 2 according to a fourth

Embodiment of the invention; and

8 is a partial perspective view of a launcher according to the fourth embodiment.

Fig. 1 shows a schematic perspective view of an inventive household refrigerator, here a combination refrigerator, with a heat-insulating body 1 and two hinged to the body 1, each a storage chamber closing doors 2, 3. An articulated arm 7 is bolted to the ceiling of the body 1 and carries a hinge pin, not visible in the figure, which engages in a hinge bushing at the right end of an upper edge of the door 2 forming end strip 4. A corresponding, not visible in the figure articulated arm 7 also engages in one

End strip at the bottom of the door 2, both hinge bushes together define a designated in the figure 8 pivot axis, which extends adjacent to the right narrow side of the door leaf 1 1 1.

The articulated arm 7 in mirror image opposite lying on the left side of the body 1 and the upper end bar 4 of the door panel 2 are holes of two Screw bushes 6 and a hinge bushing 5 shown, on which the articulated arm 7 can be mounted alternatively or alternatively receives the hinge pin when the pivot axis to the left edge of the door 2 to be offset.

Fig. 2 shows a partial section through the left lateral flank 10 of the door 2 and an adjacent side wall of the body 1 in the plane designated II-II in Fig. 1. A metal or plastic extruded profile strip 13 with S-like

curved, a sideways open longitudinal groove 9 forming cross-section fills the flank 10 completely. At a front edge of the profile strip 13, a groove 14 is formed, which receives a seal. The seal connects to a front panel 12 made of glass, which forms a front side of the door 2. At a rear edge of the profile strip 13 a thermoformed plastic rear wall 16 of the door is attached. The front plate 12, the rear wall 16, the profile strips 13 on the two lateral flanks 10, 1 1 and the end strips 4 at the upper and lower edges define a heat-insulating

Hard foam filled inner cavity 30 of the door. A parallel to the front panel 12 in the cavity 30 in projecting rib 28 stiffened the profile strip thirteenth

The glass front plate 12 is tinted or provided with an opaque layer 29, which hides the hard foam in the cavity 30. Fig. 3 shows a partial perspective view of the lower end strip 4. Die

End strips 4 are each mirror-symmetrical with respect to a vertical plane and are mirror images of each other. At a front edge of a flat base plate of the end strip 4, a web 15 extends to the in

assembled state, the front panel 12 is applied. A groove 16 at the front of the web extends the groove 14 of the profile strip 13, so that a continuous seal around the front plate 12 in the grooves 14, 16 of the profile strips 13 and end strips 4 can be attached.

The hinge bushing 5 here comprises a cylindrical projection 17, which receives a hole open towards the underside of the end strip 4, and a D-like web 18, of which a complementary to the longitudinal groove 9 is arcuate

curved portion around the projection 17 around, and the one piece with the

Base plate are formed, and a packing 19, the same in plan view Outer contour as the web has 18 and can be plugged onto this to cover the projection 17.

A groove 20 extends around the side facing away from the narrow side 10 of the

Hinge bush 5. It is intended to receive a lower end of the left flank of the door forming profile strip 13. Between the mounted on two end strips 4 packing 18, the longitudinal groove 9 is open, so that a user can engage in it to raise the door.

4 shows a partial view of a closing strip 4 according to a second embodiment of the invention. The groove 20 receiving the end of the profile strip 13 extends here beyond the projection 17, so that the profile strip 13 at its end, as shown in FIG. 5, must have a cutout 21 into which the projection 17 engages. The profile strip 13 is supported in this embodiment of the hinge bushing 5 by the neck 21 delimiting wall portions 22 of the profile strip 13 engage in the over the hinge bushing 5 passing groove 20 and projecting from the projection 17 portion 23 of the web 18 from the expanding foam on the inside of the profile strip 13 applied pressure absorbs.

Fig. 6 shows a piece of a profile designed as a hollow profile strip 24, the cross section of which the profile strip 13 by adding a planar, the longitudinal groove. 9

closing side wall 25 is derived. The end strip 4 is slightly modified at its lateral end to allow a flush connection of the side wall 25 to an edge 26 of the end strip 4. At this end strip 4 and the profile strip 13 with the sideways open groove 9 can be mounted, in turn, for laminating the Vorsprungs17 the hinge bushing 5 may include a plug-on filler 19. A extending around the projection 17 of the hinge bushing 5 wall portion 27 of the profile strip 23 is used here essentially only to give the profile strip 24 on the hinge bushing 5 stop. The profile strip 24 is in particular in

Can be used with a handle mounted projecting from the door 2, or it can be combined with the profile strip 13 by the sideways open profile strip 13 is attached to the hinge-distal edge 10 of the door 2, there to use the longitudinal groove 9 as a handle, the profile strip 24, however, on the hinge near edge 1 1, where no grip groove is needed. FIG. 7 shows, analogously to FIG. 2, a partial section through the door 2 according to a fourth embodiment of the invention. This differs from the embodiments described above in several independently realizable aspects. A first aspect is the fact that the front plate 12 and parts of the lateral flanks 1 1 are integrally formed from a sheet metal blank 30. An inside the door 2

engaging edge 31 of the blank 30 is folded back for stiffening. The profile strip 13, which forms only a rear region of the flank 10 here, is provided at its front edge with a groove which receives the edge 31. According to a second aspect, the hinge bush 5 does not completely fill the longitudinal groove 9 of the flank 10, but only in its region penetrating the door 2 deepest. The support of the profiled strip 13 by the hinge bush 5 is not less effective than in the previously considered embodiments; however, the reduced cross-section of the hinge bushing 5 allows it to be formed integrally with the end strip 4 and to dispense with the packing 19.

As can be seen in the view of FIG. 8, the hinge bushing and a web 32 extending around the base plate of the end strip 4 delimit a groove 33 which receives the lower end of the profile strip 13 and the folded edge 31 of the blank 30 engaging therein. As a result, the blank 30 and the profile strip 13

positively locked together, and the blank 30 is held taut on the web 32 so that no foam between it and the web 32 can escape.

Claims

201 104436 WO 2013/107605 PCT / EP2012 / 076986 PATENT CLAIMS

Heat-insulating door with a plate-shaped insulating body, on two first flanks by end strips (4) and on the first flanks

connecting second flanks (10, 1 1) by profile strips (13, 24) is limited, wherein the end strips (4) each have at least one inside the door (2) projecting hinge bushing (5), characterized in that at least one of the profile strips (13, 24) on the hinge bushes (5) is supported against a directed from the Dämmstoffkörper outwardly pressure.

Heat-insulating door according to Claim 1, characterized in that the profile strip (13, 24) arranged on one of the second flanks (10, 11) engages around a wall region of the hinge bushes (5) facing away from this second narrow side.

Heat-insulating door according to claim 1 or 2, characterized in that the profiled strip (13, 24) and the hinge bushes (5) form a tongue and groove connection.

Heat-insulating door according to claim 3, characterized in that the hinge bushes (5) each have two oriented in different directions grooves (20) or springs (22).

Heat-insulating door according to claim 3 or 4, characterized in that the tongue and groove connections (20, 22) in the longitudinal direction of the hinge bushes (5) are pushed into one another.

Heat-insulating door according to one of the preceding claims, characterized in that the profiled strip (13) has an outwardly open longitudinal groove (9).

7. Heat-insulating door according to claim 6, characterized in that the

Hinge bushes (5) at least partially engage in the longitudinal groove (9). 201 104436

WO 2013/107605 PCT / EP2012 / 076986

9

8. Heat-insulating door according to claim 7, characterized in that the

Hinge bushes (5) the cross section of the longitudinal groove (9) in each case in one

Completely fill in end area.

9. Heat-insulating door according to one of the preceding claims, characterized in that the end strips (4) each have two mutually mirror-image hinge bushes (5).

10. Heat-insulating door according to one of the preceding claims, characterized in that the profile strips are integrally connected to each other via a front panel of the door.

1 1. Heat-insulating door according to one of claims 1 to 9, characterized

in that a front plate (12) at leading edges (15, 14) of the

End strips (4) and moldings (13, 24) is attached.

12. Refrigerating appliance, in particular domestic refrigeration appliance, with a heat-insulating door (2) according to one of the preceding claims.