EP1032795B1 - Insulating door - Google Patents

Description

The invention relates to a heat insulating Door according to the preamble of claim 1. Such a door is e.g. known from DE-A-3 208 171.

For doors for refrigerators or freezers, it is known whose door handles are under With the help of backing parts arranged on the heat insulation side to fix on the door body, as they usually consist of a sheet steel plate Outer cladding shaped as a thin wall serving as the outer skin of the door is not suitable due to its small wall thickness a screw connection for fastening the door handles for the occurring To give the door the necessary load profile. Through the The use of backing parts is the problem of fastening Door handles on the door panels at least largely satisfactory solved, but the use of backing parts brings the problem up to the fact that these are not only regarding the door molding process fixed in their correct position, but also with regard to the thermal insulation material incorporated in the liquid starting components to be sealed against the outer skin of the door. Both that Sealing the backing parts with respect to the outer door skin as well as their Fixing this brings additional, the manufacturing flow of the doors inhibitory workload, which is due to the possibility to be able to carry out a door stop change for every door in double the amount incurred and thus the costs for the door production additional are increased.

The invention has for its object a door according to the preamble of claim 1 with simple constructive To improve measures such that the disadvantages of the prior art Technology are avoided.

This object is achieved according to the invention solved by the features of claim 1.

The inventive design of the fastening element achieves a particularly robust and at the same time easy to carry out fastening. In addition, the fastener in a single operation, both liquid-tight, for example formed by a thin-walled sheet steel door outer skin fixed and in the correct position without additional Holding means also held during the foaming process. By a such a measure will not only be the work involved in manufacturing of a refrigerator door noticeably reduced, but also the manufacturing process for this accelerated significantly. There is also a dependency of the individual workmanship of the manufacturing personnel in the correct position and liquid-tight attachment of the fastener at least largely avoided on the outer skin of the door.

Attached particularly inconspicuously and against unwanted damage the fastener is protected during the manufacturing process, if according to a next preferred embodiment of the object the invention provides that the fastening element on the heat insulation side is attached to the outer skin of the door and has a sealing lip, which in the attached state of the fastener Seals in the outer skin of the door. In addition, the Cover the holder particularly lightly over the entire surface with the door handle.

This is particularly easy to fix in the correct position and liquid-tight Fastening element on the outer skin of the door if preferred Embodiment of the object of the invention is provided that the Means for holding the fastening element on the outer door skin are formed by at least two retaining lugs, which with the edges the recording can work together.

According to a next preferred embodiment of the object the invention provides that the retaining lugs of the fastener in the manner of a bayonet catch with the edges of the holder can be brought into engagement.

By such a fastening measure for the fastener it is in the correct position and liquid-tight thanks to a single handle attached to the outer skin of the door.

Particularly simple and targeted with the edges of the shot in The holding lugs can be brought into engagement if after a next advantageous one Embodiment of the subject of the invention is provided that which are in engagement with the retaining lugs of the fastener Edges of the receptacle as protrusions protruding into the opening area are trained.

According to a further preferred embodiment of the subject of The invention provides that the projections step-like for thermal insulation the door are set down.

Due to the step-like cranking of the projections, the fastening element is Can be attached flush to the visible surface of the outer door skin.

According to a next preferred embodiment of the object the invention provides that the recording with at least one Locking means is provided, which the fastening element in its fastening position secures positively against twisting.

This ensures in a simple manner that the fastener not unintentionally during the manufacturing process from its correct position Attachment layer is removed so that over the entire Manufacturing process the fastener even with unwanted interference on this remains in its correct position.

Particularly secure against rotation, especially with regard to the introduction of Fixing screws for holding the door handle is secured Fastening element on the outer skin of the door if after a next one advantageous embodiment of the subject of the invention provided is that the fastener can be filled with thermal insulation material Has receiving pockets.

A particularly simple form-fitting attachment of the door handle the fastener arises if after a last preferred Embodiment of the object of the invention is provided that the Recording is designed as a cross-like opening, in which a substantially T-shaped locking element designed as a holding part is positively lockable.

The invention is in the following description based on one in the attached drawing simplified embodiment explained.

Show it

Fig. 1

a refrigerator door in section with an outer skin on which a door handle fixed at two mounting positions , of which the fastening position provided in the middle of the door has a fastening element, in plan view,

Fig. 2

partially in an enlarged sectional view Refrigerator door with the heat insulation side on the outer door skin fixed fastener in top view,

Fig. 3

in an enlarged detail the outer door skin and that Fastening element in the unlocked, pulled apart Condition, in a spatial view from the side,

Fig. 4

sections of the outer door skin and the fastening element in the locked state in a sectional view of the side and

Fig. 5

sections of the outer door skin and the fastening element in the locked state in front view.

According to Figure 1, a refrigerator door 10 is shown, which through Chipless shaping of a plastic board produced inner lining 11, a heat insulation layer 12 and one with the inner lining 11 connected to a door body, serving as the outer skin 13 Has outer lining, which by the wetting effect of Thermal insulation layer 12 with the inner lining 11 to a dimensionally stable Formation is connected. On the outer skin 13 is a bow-like trained door handle on two, explained in more detail below Fixing positions I and II set, of which the fixing position I on the vertically running in the installed position of the refrigerator door 10 Sidewalls of the outer skin 13 is provided while the Fixing position II approximately in the middle of the width of the door 10 through the outer skin 13 formed front is provided. How in particular FIG. 3 shows the outer skin 13 formed without cutting from steel sheet this purpose with a substantially circular, as an opening trained receptacle 14 provided in the opening area two at least approximately opposite to each other Outer skin protruding integrally with molded projections 15, which stepwise in the direction of the heat insulation layer 12 by cropping are discontinued. Adjacent to the offset projections 15 are as Locking means 16 serving, opposing fixing and Holding lugs arranged, which like the projections 15 in the Open area of the receptacle 14 protrude, but in contrast to this are flat. The receptacle 14 is used for holding and Making a heat insulation side accessible on the outer door skin 13 fixed fastener 20. This has a first disc-like section 21, which has an annular, with molded, serving as an elastic sealing lip 22 edge portion comprises and which for holding the fastener 20 on the Door outer skin arranged on a circular path around its center Z. Holding lugs 23 has. These are angular in cross section with unequal legs 24 and 25 formed, of which the shorter Leg 24 on the end face of the disk-like section 21 is fixed, while the longer leg 25 with its inside to End face of section 21 is spaced so that there is a groove-like Recording 26 with a height h results, which is essentially the Material strength of the projections 15 corresponds. Following each of the Retaining lugs 23 are provided with a catch receptacle 27, which is symmetrical are arranged to an axis of symmetry and which by a open edge recess of a piece connected to the retaining lugs Segment part 28 are generated. Between the retaining lugs 23, the disc-shaped section 21 a from its center Z outgoing and symmetrical to its focus axes S2 and S3 arranged cross slot-like opening 30 with unequal opening legs 31 and 32, of which the longer Opening legs are arranged symmetrically to the axis of gravity S3, while the shorter opening legs 32 symmetrical to the axis of gravity S2 run. The cross-slot-like opening 30 settles in Connection to the disk-like section 21 within a tube-like trained, in one piece with the disc-like portion 21st connected connecting element 33 continues, in the interior thereof Connection to that of the cross-slot-like opening 30 occupied part length, a receiving area 34 is provided. The Connecting element 33 is on its facing away from the interior Outside with radially extending from this, in uniform Provided angular distances from 90 ° arranged walls 35 by whose angular distance from each other receiving pockets 36 are formed. The delimiting the receiving pockets 36, in one piece with the connecting element 33 connected walls 35 are also integral with one provided at the free end of the connecting element 33 second disk-like section 37 connected. This is at his Provided on the outside with a collar-like extension 38, on the A circumferentially arranged detent 39 is provided on the inside with whose help is similar to a film hinge, not shown, in the production state formed band connected to the approach 38 End cover 39 liquid-tight against the end face of the section 37 is pressed, so that an entry of the liquid starting components registered heat insulation material 12 in the receiving area 34 is prevented.

In the fastener 20, which is made of plastic injection molding is provided for the generation on the front of the door 10 Attachment position II with its disc-like section 21 at the Thermal insulation layer 12 facing the inside of the outer door skin 13 fixed (see in particular Figure 2). The are used for attachment Holding lugs 22, which in a first assembly step in the between the projections 15 remaining free spaces are positioned (see Figure 3 with the first marked arrow direction). To the final Attachment is the fastener 22 against the spring force of the elastic sealing lip 22 against the inside of the outer door skin in Direction of arrow 1 pressed and then turned in direction of arrow 2, whereby the free end of each projecting into the receptacle 14 Projection 15 with the groove-like receptacle 26 of the retaining lugs 23 in Intervention stands. The correct end position of the fastening part 20 the outer door skin 13 is thereby by the engagement of the projections in the direction of rotation upstream nose-like locking means 16 in the Resting recordings 27 signals, which by the locking process Fastening element 20 is also secured in position. By the in Kind of a bayonet lock performed fastening process of Fastening element 22 is its elastic sealing lip 22 liquid-tight pressed against the inside of the outer door skin 13, so that the in liquid starting components between the inner lining 11 and the outer skin 13 registered heat insulation material 12 does not have the Recording 14 can emerge towards the visible surface of the outer door skin 13. The on the outer door skin 13 fastener 20 closes in Attachment state with the outside of its retaining lugs 23 flush with the front of the outer skin 13. The flush Completion is skewed towards the heat insulation layer 12 executed projections 15 reached. The liquid-tight based on the locking lug 39 pressed against the end face of the section 37 End cover 40 prevents during the foaming process formed by the inner lining 11 and the outer skin 13 Cavity that the heat insulation material 12, which can be through Introduce into the receiving pockets 36 for additional anchoring and Stabilization of the fastening element 20 on the outer door skin 13 contributes via the receiving area 34 into the cross-slot-like opening 30 passes and there the holder of a bow-shaped door handle 45 prevented. As already mentioned, 45 are for holding the door handle are two mounting positions I and II on the refrigerator door 10 provided, of which the provided on the side cheeks of the door 10 Mounting position I by a not shown in the Threaded outer thread inserted is formed during the Fastening position II is generated by the fastener 20. to Fixing the handle-like door handle 45 on the the fastening element 20 formed fastening position II is this on the face of its free temple end with a T-shaped Locking element 46 provided while it is attached to its holder on the Fastening position I has a through hole, not shown (see Figure 1). To attach the door handle 45 to the Mounting position II is the door handle 45 as shown in Figure 1 in one first assembly step in the direction of the arrow with its locking element 46 to bring into the cross-like opening 30, the Insertion depth by hitting the end face at the free end of the bracket is limited against the outside of the outer door skin 13. The insertion depth is dimensioned so that the T-shaped locking element 46 now within the receiving area 34 located. For locking the locking element 46 on the fastening element 20 the door handle in the direction of arrow 4 is too far move until the free bracket end assigned to mounting position I. of the door handle 45 strikes on the side cheek of the door 10. In this Position is between the locking member 46 and the fastener 20 a both perpendicular to the door front and vertically this acting positive locking creates, which is due to the T-crossbar formed section of the locking element within the Recording area 34 is located and against the horizontal, the Opening limb 31 delimiting boundary wall abuts while the other section of the locking element is within the Opening leg 31 is located. For fixing the door handle in a horizontal position The direction is one that can be inserted into the fastening position I and is not shown here Fastening screw provided.

In order to change the door stop after a door stop change To be able to change the door handle 45 is only that Loosen the fastening screw on the side cheek of the door 10 and the To move the door handle 45 against the direction of arrow 4 so far that the T-crossbar of the locking element 46 within the vertical arranged opening leg 32 lies. In this position the Door handle 45 against the direction indicated by the arrow 3 from the Remove refrigerator door 10. After implementation, to which the Door handle 10 only with its attachment position I facing End is to be pivoted through 180 °, the door handle 45 can be in the above fix again to the refrigerator door 10 as described, the locking of the locking element 46 on the fastening element 20 now contrary to that indicated by arrow 4 Direction has to take place. In the respective attachment state, the covers Attachment position II facing end of the bow-like door handle 45 serving recording 14 completely.

As an alternative to the molded-on sealing lip 22, there are also separate sealing rings such as. O-rings or the like conceivable as a sealant, which then occurs during the locking process of the fastening element 20 pressed from this on the heat insulation side against the outer door skin 13 become.

Claims (9)

1. Thermally insulating door, such as a cooling appliance or freezing appliance door, with a door outer skin at which a door handle is fixed at at least two fastening positions (I, II) by way of fastening elements, wherein the fastening element (20) at least one (II) of the fastening positions (I, II) is mounted in a receptacle (14) of the door outer skin (13) and is provided with means by which the fastening element (20) is fixed in liquid-tight manner to the door outer skin (13), characterised in that the fastening element (20) is provided with a mounting receptacle (30) into which the door handle (45) is inserted by a retaining part, which is provided thereat, to be locked in mechanically positive manner.
2. Thermally insulating door according to claim 1, characterised in that the receptacle is executed as an opening (30), which is formed to be similar to a cross and in which a locking element, which is constructed as mounting part and is formed to be substantially T-shaped, can be introduced and locked to the fastening element (20) in mechanically positive manner.
3. Thermally insulating door according to claim 1 or 2, characterised in that the fastening element (20) is fixed to the door outer skin (13) at the thermal insulation side and is provided with sealing means (14) which in the fastened state of the fastening element (20) sealingly surround the receptacle (14) in the door outer skin (13).
4. Thermally insulating door according to claim 1, characterised in that the means for mounting the fastening element (20) of the door outer skin (13) are formed by at least two retaining lugs (23) which are capable of co-operation with the edges of the receptacle (14).
5. Thermally insulating door according to claim 4, characterised in that the retaining lugs (23) of the fastening element (20) can be brought into engagement with the edges of the receptacle (14) in the manner of a bayonet lock.
6. Thermally insulating door according to claim 4 or 5, characterised in that the edges, which are disposed in engagement with the retaining lugs (23), of the receptacle (14) are constructed as projections (15) projecting into the opening area of the receptacle.
7. Thermally insulating door according to claim 6, characterised in that the projections (15) are set back in steps towards the thermal insulation (12) of the door (10).
8. Thermally insulating door according to one of claims 1 to 7, characterised in that the receptacle (14) is provided with at least one detent means (16) which secures the fastening element (20) in its fastened position in mechanically positive manner against rotation.
9. Thermally insulating door according to one of claims 1 to 8, characterised in that the fastening element (20) has receiving pockets (36) which can be filled with thermal insulation material (12).

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