EP1548366A2 - Hinge for a door of a domestic appliance - Google Patents

Abstract

The door hinge (2) for the door of a domestic appliance has two sections (3,4) which are pivotable in relation to one another within a pivot angle range between a minimum and a maximum angle. The hinge has an additional functional unit (5) which is connected to both hinge sections and which can occupy at least two functioning positions. At least one predetermined functioning position of the functional component is clearly associated with a predetermined pivoting angle between the hinge sections. An independent claim is included for a domestic appliance, and especially an oven, freezer, refrigerator, dish washer or washing machine, which has a door equipped with the aforesaid hinge.

Description

The invention relates to a door hinge for a door of a Household appliance.

From EP 1 106 932 A2 a door for a Garofen, preferably for the household, known with at least two spaced apart support elements, which are made of a temperature-resistant mechanically stable polymeric material, in particular a thermoplastic or a thermosetting polymer material, and with an outer pane, with the carrier elements are connected via a respective adhesive bond, wherein receiving means and / or fastening means are arranged on the two carrier elements, which are formed with the associated carrier element as a continuous molding and for receiving or securing another door pane, in particular an inner pane or washer, and / or at least one further door component, in particular in each case a door hinge and / or at least a third door pane and / or a door handle, are provided. One or more of the functional parts of the door, in particular the door handle or at least one of the door panes, may be integrated with the carrier elements to form common moldings and then consists of a common polymer material. The support elements may be formed as hollow profile parts, but also solid. As suitable high-temperature-resistant plastics, EP 1 106 932 A2 in column 7, from line 33 to column 8, line 5, specifies some possible plastics. A cooking oven with a furnace muffle with a feed opening for the introduction of food to be cooked is then equipped with such a door for closing the feed opening. To move this known door relative to the loading opening two door hinges are provided as connecting elements for connection to the rest of the cooking oven, which are each mounted in a cavity of the support member or on a support member, preferably resiliently. Such resilience can be achieved, for example, with a snap or snap connection, which then the power surges are damped when opening the door from the door hinge on the support member.

In Applicant's household cooking ovens or stoves available on the market, a door can be pivoted about a pivot axis extending horizontally under the door by means of two door hinges. The door hinges each have in cross-section U-shaped hinge housing made of sheet steel, in each of which two embossments are provided with metric threads for securing the hinge in similar to those described in EP 1 106 932 A2 constructed and arranged, but formed of sheet metal support elements. Within the hinge housing a tension spring is arranged, which is designed as a helical spring and exerts a restoring force on the open door to push the door when opening or the movement upwards against the feed opening or its edge. This also causes a damped movement of the door down to the open position. One end of the tension spring is connected at the end of the housing by a bolt to the housing. The other end of the tension spring is also suspended in a bolt which is movably guided in two elongated holes of the housing. This further pin actuates a Zughebei, which is connected via a further bolt with a Festarm. The arm exits or protrudes from the hinge housing and connects to the hinge bearing on the hearth body. When turning the Festarmes for example, 87 degrees, the built-tension spring is stretched by 12 mm. If the closed door is opened by pivoting down, so the arm of each hinge via the pull lever actuates the tension spring, which is stretched more and more with increasing door opening angle. When the door is open, the spring force is approximately equal to the total weight of the door to prevent the door from falling too fast. In the end position at maximum opening angle stops are provided by which the door can not be pivoted further down. The spring force of the tension spring is assigned individually to the respective door weight. To close the door, a further, arranged in the hinge housing compression spring is used in addition to the tension spring, which is supported in the pull lever on one side, guided by a connecting rod, which actuates the pressure lever via a bolt. The pressure lever is arranged as a U-shaped rocker and presses on the front edge of the Festarmes. The roller mounted in the pressure lever rolls over the contour or front edge of the Festarmes. When the door is open at an angle of approx. 30 degrees, an ever-increasing air gap is created between the roller and the fixed arm edge. When closing the door, the roller presses more and more against the edge of the fixed arm over the last 30 degrees. By a corresponding contour of the hard arm now, for example, a kind of open door at 15 degrees or by the Festarmkontur supported contact pressure of the door when closing is increased or reduced.

The hinge housing with the functional parts contained therein is so in this as well as in most on the market integrated devices in the door, while in the Hinge bearing hinged and mounted counter levers of the hinge, which is often referred to as a hinge sword, in the housing of the oven usually below or laterally the loading opening is attached. Furthermore, the known includes Hinge another so-called release lever, which it made possible by his position, the hinge in the Mount or unhinge hinge bearing.

In addition to door hinges in which the hinge housing is arranged with the tension spring in the door itself, door hinges are also known in which the free lever arm or fixed arm is fixed in the door and the remaining parts including the tension spring are fixed in or on the housing of the Garofens. Such door hinges are known, for example, from DE 1 779 221 B1 or DE 2 025 542 A or DE 26 02 275 A1 or DE 2 037 243 A or DE 44 43 098 A1 or DE 39 33 719 C2 or DE 195 48 512 A1 or DE 196 04 435 C2 known.

For example, in the loading door for a household electric cooker according to DE 39 33 719 C2 a directed against the inertia of the loading door in the open position acting pneumatic damper in conjunction with a spring element coupled to the loading door, that the counteracting influence substantially on the pivoting opening range between approx. 45 ° is limited to the perfect opening. The damper is located in the hearth housing and connected via a lever mechanism with the loading door. The lever mechanism comprises an angle lever, of which an angle arm is connected to the damper via a hinge and the second angle arm is inserted into the door and is releasably secured by means of a handle operated by a closure.

The invention is based on the object, a new door hinge for a household appliance as well as a new household appliance specify.

This object is achieved by a door hinge with the features of claim 1 or a household appliance with the features of claim 22. Advantageous embodiments, developments and door hinges and home appliance applications According to the invention, from the claim 1 or Claim 22 dependent claims.

a) zwei Scharnierteile, die relativ zueinander um eine Schwenkachse innerhalb eines Schwenkwinkelbereichs zwischen einem minimalen Schwenkwinkel und einem maximalen Schwenkwinkel schwenkbar sind,

b) und ein zusätzliches Funktionsteil,

b1) das mit den beiden Scharnierteilen gekoppelt ist und

b2) das wenigstens zwei Funktionsstellungen einnehmen kann,

b2) wobei wenigstens eine vorgegebene Funktionsstellung des Funktionsteils eindeutig einem vorgegebenen Schwenkwinkel zwischen den Scharnierteilen zugeordnet ist.

The door hinge according to claim 1 is suitable and intended for a door of a domestic appliance, in particular a household oven, a household refrigerator and / or freezer, a household dishwasher or a household washing machine

a) two hinge parts which are pivotable relative to each other about a pivot axis within a pivot angle range between a minimum pivot angle and a maximum pivot angle,

b) and an additional functional part,

b1) which is coupled to the two hinge parts and

b2) that can assume at least two functional positions,

b2) wherein at least one predetermined functional position of the functional part is uniquely associated with a predetermined pivoting angle between the hinge parts.

a) ein Gehäuse,

b) einen Innenraum mit einer Zugangsöffnung,

c) eine der Zugangsöffnung zugeordnete Tür,

d) wenigstens ein Türscharnier gemäß der Erfindung,

e) wobei eines der beiden Scharnierteile des Türscharniers mit dem Gehäuse, insbesondere lösbar, verbunden ist und das andere der beiden Scharnierteile des Türscharniers mit der Tür, insbesondere lösbar, verbunden ist,

f) wobei die Tür bei dem minimalen Schwenkwinkel zwischen den beiden Scharnierteilen einen minimalen Öffnungswinkel zur Zugangsöffnung einnimmt und die Zugangsöffnung dabei verschließt und bei dem maximalen Schwenkwinkel zwischen den beiden Scharnierteilen einen maximalen Öffnungswinkel zur Zugangsöffnung einnimmt und

g) wobei das Funktionsteil des Türscharniers zumindest in der vorgegebenen Funktionsstellung eine oder mehrere Funktion(en) auslöst oder erfüllt.

The household appliance, in particular the household oven, the household refrigerator and / or freezer, the household dishwasher or the household washing machine, according to claim 22

a) a housing,

b) an interior with an access opening,

c) a door associated with the access opening,

d) at least one door hinge according to the invention,

e) wherein one of the two hinge parts of the door hinge is connected to the housing, in particular releasably, and the other of the two hinge parts of the door hinge is connected to the door, in particular releasably,

f) wherein the door at the minimum pivot angle between the two hinge parts occupies a minimum opening angle to the access opening and thereby closes the access opening and occupies a maximum opening angle to the access opening at the maximum pivot angle between the two hinge parts and

g) wherein the functional part of the door hinge triggers or fulfills one or more function (s) at least in the predetermined functional position.

The invention is based on the idea of a door hinge to integrate additional functional part, which at least a given position (or: position, position), the one assigned predetermined hinge position and thus one assigned predetermined door position corresponds to trigger or performing an additional function of the door hinge or a function of the household appliance that does not match the actual hinge function has or has to do is used.

• eine Verriegelung der Tür, beispielsweise bei einer pyrolytischen Reinigung oder als Kindersicherung eines Haushaltsgarofens oder beim Waschvorgang einer Waschmaschine,
• das Einschalten eines elektrischen Verbrauchers, beispielsweise einer Beleuchtung, einer Beheizung, einer Strömungsmaschine wie einem Lüfter oder einer Pumpe und/oder eines Motors
• das Ankoppeln einer zusätzlichen Drehmomenteinrichtung und/oder einer Dämpfungseinrichtung
• das Ankoppeln eines Antriebs zum automatischen Öffnen und Schließen der Tür.

Such additional functions that can be triggered or fulfilled by means of the functional part of the door hinge may be in particular:

• a locking of the door, for example during a pyrolytic cleaning or as a child safety device of a household oven or during the washing process of a washing machine,
• the switching on of an electrical load, for example a lighting, a heating, a turbomachine such as a fan or a pump and / or a motor
• the coupling of an additional torque device and / or a damping device
• the coupling of a drive to automatically open and close the door.

FIG 1

ein Türscharnier mit einem Funktionshebel bei minimalem Schwenkwinkel,

FIG 2

das Türscharnier gemäß FIG 1 bei einem zwischen minimalem Schwenkwinkel und maximalem Schwenkwinkel liegenden mittleren Schwenkwinkel,

FIG 3

das Türscharnier gemäß FIG 1 oder FIG 2 bei maximalem Schwenkwinkel,

FIG 4

eine Tür eines Haushaltsgerätes mit zwei Türscharnieren mit Funktionshebel jeweils bei minimalem Schwenkwinkel gemäß FIG 1,

FIG 5

die Tür gemäß FIG 4 mit bei mittlerem Schwenkwinkel gemäß FIG 2 stehenden Türscharnieren,

FIG 6

die Tür gemäß FIG 4 oder FIG 5 mit bei maximalem Schwenkwinkel gemäß FIG 3 stehenden Türscharnieren

jeweils schematisch dargestellt sind. Einander entsprechende Teile oder Größen sind mit denselben Bezugszeichen versehen.The invention will be explained below with reference to exemplary embodiments. Reference is made to the drawings, in which

FIG. 1

a door hinge with a function lever with minimum tilt angle,

FIG. 2

the door hinge according to FIG. 1 at a mean pivoting angle between minimum pivot angle and maximum pivot angle,

FIG. 3

the door hinge according to FIG. 1 or FIG. 2 at maximum pivot angle,

FIG. 4

a door of a household appliance with two door hinges with function lever each with a minimum pivoting angle according to FIG 1,

FIG. 5

the door according to FIG 4 with at medium pivot angle according to FIG 2 standing door hinges,

FIG. 6

the door according to FIG 4 or FIG 5 with at maximum swing angle according to FIG 3 standing door hinges

are each shown schematically. Corresponding parts or sizes are provided with the same reference numerals.

The door hinge 2 according to FIG 1 to 3 has a first hinge part 3 and one on the first hinge part 3 via a Pivot pin 6 pivotally mounted about a pivot axis second hinge part 4 on. The minimum swing angle between the two hinge parts 3 and 4 is shown in FIG and designated αmin, and is typically 90 ° or a few degrees less. A locking part, which in FIG Denoted by 7, the second hinge part 4 locked in the position at αmin according to FIG 1. The maximum tilt angle is shown in FIG 3 and designated αmax and is typically 180 ° or a few degrees less. 2 shows a middle position with a swivel angle α, for the αmin ≤ α ≤ αmax. The direction of rotation represented by the arrow corresponds to a larger swing angle α.

The first hinge part 3 Comprises within an oblong and linear formed hinge housing 30 a not shown Tension spring in a conventional manner via a also not shown transmission mechanism Torque generated, the rotational movement in the in FIG 1 to 3 counteracts rotation shown, ie anti-parallel to the torque is directed, to pivot the two hinge parts 3 and 4 against each other in the one shown in Figures 1 to 3 Turning sense must be expended. The second hinge part 4 is as an elongated hinge arm or hinge sword or Hinge lever formed. The hinge parts 3 and 4 can identical to the above-mentioned known hinge at be built up the Applicant's devices and thus also contain a compression spring.

On the hinge housing 30 of the first hinge part 3 is now a designed as a lever functional part 5 linear parallel to the longitudinal direction of the hinge housing 30 movably guided or stored.

The functional part 5 has a longer arm or part 50, in the two successively arranged slots as a linear Guide slots 53 and 54 are formed. In the guide slots 53 and 54 each engages one in an associated embossed Threaded in the hinge housing 30 screwed Guide screw 33 and 34 as a guide pin, so that two linear slotted guides are formed.

At the side facing away from the second hinge part 4 that has Functional part 5 an elongated free end 55 on which the first hinge part 3 protrudes. The respective distance the outermost portion of the free end 55 of the first Hinge part 3 is in FIG 1 with xmax, in FIG 2 with x (α) and in FIG 3 denoted by xmin

At the end facing away from the free end 55 of the longer part 50 of the functional part 5 is a right-angled upwardly projecting shorter arm or part 51 of the functional part 5, in which also a perpendicular to the guide slots 53 and 54 extending further guide slot 52 is formed is. In this guide slot 52 also runs after Type of slotted guide another lead screw 42, one through the second hinge part 4 from the other side screwed collar screw is.

The guide screw 42 and guide slot 52 between the second hinge part 4 and the functional part 5 formed Slotted guide causes together with the other two linear Slotted guides between the first hinge part 3 and the functional part 5 during pivoting of the two hinge parts. 3 and 4 an axial or linear movement of the functional part 5. In this case, the linear displacement of the functional part 5 is dependent from the pivot position of the two hinge parts 3 and 4. According to FIG. 1, at the minimum swivel angle α min linear distance x (αmin) = xmax maximum. According to FIG 3 is at the maximum swivel angle αmax the associated linear distance x (αmax) = xmin minimal. According to FIG 2, the distance x = x (α) is a function of the swivel angle α, namely a unique one Function with xmin ≤ x ≤ xmax.

The FIG 4 at 6 now show the hinge positions according to 1 to 3 corresponding door positions of a door 8 for a Household oven with two identical or identical and according to 1 to 3 trained door hinges 2 and 2 ', respectively a functional part 5 or 5 '.

The door 8 includes an outer pane 10 at one of a feed opening or access opening of a not shown Muffelinnenraumes facing outside of the door 8, two at the Outer pane 10 fastened, in particular glued, carrier elements 11 and 12, which are parallel to each other and vertical, and an inner pane 13, a horizontal air guide part 14 and a door handle 15, each on the support elements 11 and 12 are held.

The inner pane 12 covers in the closed shown in FIG State of the door 8 at the minimum pivot angle αmin the not shown access opening or is located on a .the access opening surrounding gasket. In the state shown in FIG the door 8 is already half open. 6 shows the door 8 in the completely open horizontal state.

The swords or second hinge parts 4 and 4 'of the door hinges 2 and 2 'are from below in associated receiving channels inserted in the support elements 11 and 12 and locked there. The first hinge parts 3 and 3 'are not in one attached bottom part of the housing of the household yarn oven attached. The functional parts 5 and 5 'can there due to their linear movement depending on the pivotal position of the door. 8 to initiate different functions.

• das Einschalten der Beleuchtung/Lampe und/oder einer Beheizung, beispielsweise eines Heißluftgebläses oder einer Ober- und/oder Unterhitze oder eines Mikrowellenbetriebs, im Muffelinnenraum,
• ein Verriegeln der Tür mittels eines beispielsweise elektromagnetisch oder mit einem Antriebsmotor ausgelösten Verriegelungselements, das insbesondere auf das Funktionsteil 5 oder 5' selbst einwirken kann.
• eine automatische Bewegung der Tür durch Kopplung des oder der Funktionsteile 5 und 5' an einen Antriebsmotor, beispielsweise über Zahngetriebe
• eine Dämpfung der Türbewegung beim Schließen durch.Kopplung des oder der Funktionsteile 5 und 5' an; z.B. pneumatische oder reibungswirksame Dämpfungselemente,
• Einbringen zusätzlicher Drehmomente z.B. bei schweren Türen durch Ankoppeln zusätzlicher Federelemente an die Funktionsteile 5 und 5', insbesondere bei Schwenkwinkeln α zwischen 135° und 180°

By operating switches or non-contact position detection, at least one of the functional parts 5 or 5 'can trigger electrical functions in the household oven when the door 8 is closed, ie at αmin according to FIG. 4. Such functions can be, for example

• switching on the lighting / lamp and / or a heating, for example a hot air blower or a top and / or bottom heat or a microwave operation, in the muffle interior,
• a locking of the door by means of, for example, electromagnetically or triggered by a drive motor locking element, which can in particular act on the functional part 5 or 5 'itself.
• an automatic movement of the door by coupling the one or more functional parts 5 and 5 'to a drive motor, for example via toothed gear
• a damping of the door movement when closing durch.Kopplung of the functional parts 5 and 5 'to; eg pneumatic or friction-active damping elements,
• Incorporation of additional torques, for example, in heavy doors by coupling additional spring elements to the functional parts 5 and 5 ', in particular at pivot angles α between 135 ° and 180 °

reference numeral

2, 2 '

door hinge

3, 3 '

first hinge part

4, 4 '

second hinge part

5, 5 '

functional part

6

pivot pin

7

arresting

8th

door

10

outer pane

11, 12

support element

13

inner pane

14

Air guide

15

door handle

30

hinge housing

33, 34

lead screw

42

lead screw

50

longer part

51

shorter part

52 to 54

guide slot

55

free end

A

swivel axis

αmin

minimal swing angle

.alpha..sub.max

maximum swing angle

α

swivel angle

xmax, xmin

distance

x (α)

distance

Claims (30)

Door hinge (2) for a door of a household appliance, in particular a household oven, a household refrigerator and / or freezer, a household dishwasher or a household washing machine, with a) two hinge parts (3, 4) which are pivotable relative to one another about a pivot axis within a swivel angle range between a minimum swivel angle (αmin) and a maximum swivel angle (αmax), b) an additional functional part (5), b1) which is coupled to the two hinge parts and b2) that can assume at least two functional positions, b3) wherein at least one predetermined functional position of the functional part is uniquely associated with a predetermined pivoting angle between the hinge parts. Door hinge according to claim 1, wherein the functional part between a first functional position and a second Functional position along a given course of movement is movable. Door hinge according to claim 2, wherein the functional part between the first functional position and the second functional position along a curved to the pivot axis, preferably circular, motion path movable is. Door hinge according to claim 2, wherein the functional part between the first functional position and the second functional position along a substantially linear course of movement is movable. Door hinge according to one of claims 2 to 4, wherein the first functional position of the functional part the minimum Swing angle of the hinge parts and the second functional position of the functional part of the maximum tilt angle of the Hinge parts corresponds. Door hinge according to one of claims 2 to 5, wherein the resulting according to the given course of movement Functional positions of the functional part between the first Function position and the second functional position respectively an associated swing angle between the minimum Swing angle of the hinge parts and the maximum swivel angle the hinge parts are clearly assigned. Door hinge according to one or more of the preceding Claims, in which one of the two hinge parts a Torque device comprises, at least in one Part of the swing angle range a torque between the two hinge parts in the pivot axis exerts. Door hinge according to claim 7, wherein the of the torque device applied torque at least in one Part of the swing angle range depends on the swing angle. Door hinge according to claim 8, wherein the of the torque device applied torque at least in one Part of the swivel angle range to enlarge the swing angle between the two hinge parts expended Counteracts torque. Door hinge according to one of the preceding claims, at the functional part via at least one guide on a first of the two hinge parts, preferably the hinge part with the torque device, relative to this Hinge part is movably set and with the second the two hinge parts is coupled such that it at Pivoting this second hinge part relative to the first Hinge part in the at least one guide relative moved to the first hinge part. Door hinge according to claim 10, wherein the functional part coupled with the second hinge part via a slotted guide is. Door hinge according to claim 11, wherein the slotted guide a, in particular substantially linear, guide slot, especially in the functional part, and one in the Guide slot engaging guide pin, preferably on the second hinge part. Door hinge according to claim 10 or one of claim 10 dependent claims, wherein the leadership, with the Function part is fixed to the first hinge part, at least one, preferably at least two, slide guide (s) includes or is. Door hinge according to claim 13, wherein each slotted guide for guiding the functional part on the first hinge part Guide slot, especially in the functional part, and a in the guide slot engaging guide pin, in particular on the second hinge part. Door hinge according to claim 13 or claim 14 respectively in a relation to claim 4, in which the leadership, with which the functional part is fixed to the first hinge part is, or their guide slot (s) essentially is formed linearly or are. Door hinge according to one of claims 10 to 15, wherein the guide pin at least one slide guide with a Screw is formed, preferably in the associated Hinge part is screwed. Door hinge according to claim 10 or one of claim 10 dependent claims, wherein the functional part at least in the predetermined functional position, preferably in each functional position from the first functional position to the second functional position, with a free end protrudes beyond the first hinge part. Door hinge according to one or more of the preceding Claims in which the functional part as a function lever is trained. Door hinge according to claim 18, wherein the function lever a longer part and an oblique one from the longer part, preferably has perpendicular, protruding shorter part. Door hinge according to claim 19 in a relationship to Claim 10 or a claim referring back to claim 10, in which the longer part of the functional lever on the first hinge part is set over the guide (s) and the shorter part of the functional lever with the second Hinge part, in particular via the link guide, coupled is. Door hinge according to claim 20 in a relationship to Claim 17 or a claim referring back to claim 17, where the longer part of the functional lever is the beyond the first hinge part protruding free end of the Function lever has. Household appliance in particular a household oven, a household refrigerator and / or freezer, a household dishwasher or a household washing machine with a) a housing, b) an interior with an access opening, c) a door associated with the access opening, d) at least one door hinge according to one or more of claims 1 to 21, e) wherein one of the two hinge parts of the door hinge with the housing, in particular releasably connected, and the other of the two hinge parts of the door hinge with the door; in particular solvable, connected, f) wherein the door at the minimum pivot angle between the two hinge parts occupies a minimum opening angle to the access opening and thereby closes the access opening and occupies a maximum opening angle to the access opening at the maximum pivot angle between the two hinge parts and g) wherein the functional part of the door hinge triggers or fulfills one or more function (s) at least in the predetermined functional position. Household appliance according to claim 22, wherein the predetermined Functional position of the functional part of the minimum opening angle or closed state of the door corresponds. Domestic appliance according to claim 23, wherein the functional part in the predetermined functional position, a lock the Door causes, in particular by engagement of a locking element at the functional part, preferably at the excellent free end. Household appliance according to one of claims 22 to 24, wherein the functional part in the predetermined functional position the Turning on an electrical load, for example a lighting, a heating, a turbomachine such as a fan or a pump, and / or an engine triggers, in particular by pressing a switch preferably with the free end, or by a position detecting device the position of the functional part, preferably whose free end, captured and the match determines with the given functional position. Household appliance according to one of claims 22 to 25, wherein the functional part, preferably at its free end, with a further arranged outside the door hinge further Torque device is coupled or coupled, the one additional torque between the two hinge parts exerts, in particular a torque that at least in one Part of the swing angle range, preferably a end region adjoining the maximum swivel angle, a to increase the swing angle between the counteracts both hinge parts expended torque. Domestic appliance according to one of claims 22 to 26, wherein the functional part coupled to a drive or coupled is to implement a drive movement in one Swivel movement of the hinge parts for automatic Panning the door. Household appliance according to claim 27, wherein the free end of the Functionally part has a toothing, with a counter toothing or drive screw of the drive engaged brought or brought. Domestic appliance according to claim 27, wherein the functional part a shaft rotatable about the pivot axis is or comprises, which is rotatable or rotated by the drive, preferably about at least one gear and one in the gear engaged or engageable counter-toothing or drive screw of the drive. Household appliance according to one of claims 22 to 29 with at least another door hinge, in particular a another door hinge according to one or more of the claims 1 to 21, das.mit the housing on the one hand and the door on the other hand is connected.

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