DE10360385A1 - Door hinge for a door of a household appliance - Google Patents

Abstract

The door hinge (2) for a door of a household appliance, in particular a household oven, a household refrigerator and / or freezer, a domestic dishwasher or a household washing machine, DOLLAR A a) comprises two hinge parts (3, 4) relative to each other about a pivot axis within DOLLAR A b) an additional functional part (5), DOLLAR A b1) which is coupled to the two hinge parts and DOLLAR A b2) the at least two functional positions are pivotable between a minimum swivel angle (alphamin) and a maximum swivel angle (alphamax) can occupy DOLLAR A b2) wherein at least one predetermined functional position of the functional part is clearly associated with a predetermined pivot angle between the hinge parts.

Description

The The invention relates to a door hinge for one Door one Household appliance.

Out EP 1 106 932 A2 is 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 polymer material, in particular a thermoplastic or a thermosetting polymer material, and with an outer pane, with which the support elements via one Adhesive connection are connected, wherein on the two support elements receiving means and / or fastening means are arranged, which are formed with the associated support member as a continuous molding and for receiving or securing a further door glass, 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 carrier elements can be designed as hollow profile parts, but also solid. As suitable high temperature resistant plastics are in EP 1 106 932 A2 in column 7, from line 33 to column 8, line 5, given 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 attaching the hinge in similar to the in EP 1 106 932 A2 described constructed and arranged, but formed of sheet metal carrier 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 pull lever, 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 therein is thus integrated in this as well as in most of the devices on the market in the door, while hinged in the hinge bearing and mounted counter lever of the hinge, which is often referred to as a hinge sword, in the housing of the Garofens is usually attached below or to the side of the feed opening. Furthermore, the known includes Hinge still a so-called Aushängehebel, which makes it possible by his position only to mount the hinge in the hinge bearing or hang.

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 for example off 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 oven 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 to the loading door so that the counteracting influence is essentially limited to the pivoting opening range between about 45 ° 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.

Of the Invention is now the object of a new door hinge for a household appliance as well as a new household appliance specify.

These Task is solved through a door hinge with the features of claim 1 and a household appliance with the Features of claim 22. Advantageous embodiments, developments and applications of door hinge and household appliance according to the invention emerge from the claims 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) which 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 an dere 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 with the housing, in particular detachably connected, and which is connected to the other of the two hinge parts of the door hinge with the door, in particular detachably,
• 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 in an additional Integrate functional part, the at least one predetermined position (or: position, position), the associated assigned hinge position and thus corresponds to an assigned predetermined door position, to trigger or Carry out an additional feature 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
• • Waschmaschineen 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:

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

The The invention will be further explained below with reference to exemplary embodiments. there Reference is made to the drawings, in which

1 a door hinge with a function lever at a miniature swivel angle,

2 the door hinge according to 1 at a mean swivel angle between minimum swivel angle and maximum swivel angle,

3 the door hinge according to 1 or 2 at maximum tilt angle,

4 a door of a household appliance with two door hinges with function lever, each with a minimum swing angle according to 1 .

5 the door according to 4 with at medium swing angle according to 2 standing door hinges,

6 the door according to 4 or 5 with at maximum swing angle according to 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 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 in 1 represented by αmin and is typically 90 ° or a few degrees less. A locking part, which in 2 With 7 is designated, locks the second hinge part 4 in the position at αmin according to 1 , The maximum swing angle is in 3 represented by 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 applies. The direction of rotation shown by the arrow corresponds to a widening pivot angle α.

The first hinge part 3 includes within an elongated and linearly formed hinge housing 30 a tension spring, not shown, which generates in a conventional manner via a transmission mechanism, also not shown, a torque which corresponds to the rotational movement in the in 1 to 3 counteracts rotation shown, that is antiparallel directed to the torque that is used to pivot the two hinge parts 3 and 4 against each other in the in 1 to 3 must be expended turned sense. The second hinge part 4 is designed as an elongated hinge arm or hinge blade or hinge lever. The hinge parts 3 and 4 can be constructed identical to the known hinge mentioned in 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 on, in which two successively arranged slots as linear guide slots 53 and 54 are formed. In the guide slots 53 and 54 engages one in an associated embossed thread in the hinge housing 30 screwed in guide screw 33 respectively. 34 as a guide pin, so that two linear slide guides are formed.

At the second hinge part 4 opposite side has the functional part 5 an elongated free end 55 on that over the first hinge part 3 protrudes. The respective distance of the outermost region of the free end 55 from the first hinge part 3 is in 1 with xmax, in 2 with x (α) and in 3 denoted by xmin

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

The from lead screw 42 and guide slot 52 between the second hinge part 4 and the functional part 5 formed sliding guide causes, together with the other two linear slide guides between the first hinge part 3 and the functional part 5 when swinging the two hinge parts 3 and 4 an axial or linear movement of the functional part 5 , Here is the linear displacement of the functional part 5 depending on the pivot position of the two hinge parts 3 and 4 , According to 1 is at the minimum Schwenkwin k αmin is the linear distance x (αmin) = xmax maximum. According to 3 At the maximum pivoting angle αmax, the associated linear distance x (αmax) = xmin is minimal. According to 2 the distance x = x (α) is a function of the swivel angle α and indeed a unique function with xmin ≤ x ≤ xmax.

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

The door 8th includes an outer pane 10 on one of a feed opening or access opening of a muffle interior, not shown, outside of the door 8th , two on the outer pane 10 fastened, in particular glued, support elements 11 and 12 , which run parallel to each other and vertically, and an inner pane 13 , a horizontal air duct part 14 and a door handle 15 , each on the support elements 11 and 12 are held.

The inner pane 12 covered in in 4 shown closed state of the door 8th at the minimum pivot angle αmin the access opening, not shown, or abuts against a seal surrounding the access opening. Im in 5 shown state is the door 8th already half open. 6 shows the door 8th in the completely open horizontal state.

The swords or second hinge parts 4 and 4 ' the door hinges 2 and 2 ' are from below in associated receiving channels in the support elements 11 and 12 inserted and locked there. The first hinge parts 3 and 3 ' are mounted in a bottom part, not shown, of the housing of the household yarn oven. The functional parts 5 and 5 ' can there due to their linear movement depending on the pivotal position of the door 8th 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 ' electrical functions in the household oven trigger when the door 8th is closed, so according to αmin 4 , Such functions may be, for example

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

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 The End

A

swivel axis

αmin

minimal swivel angle

.alpha..sub.max

maximum swivel 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 domestic washing machine, having a) two hinge parts ( 3 . 4 ) which are pivotable relative to one another about a pivot axis within a pivot angle range between a minimum pivot angle (αmin) and a maximum pivot angle (αmax), b) an additional functional part ( 5 ), b1) which is coupled to the two hinge parts and b2) the at least two functional positions can take, b3 'wherein at least one predetermined functional position of the functional part is uniquely associated with a predetermined pivot angle between the hinge parts. door hinge according to claim 1, wherein the functional part between a first Function position and a second functional position along a predetermined 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 to the pivot axis curved, preferably circular, 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 substantially linear Movement is movable. door hinge according to one of the claims 2 to 4, in which 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 equivalent. door hinge according to one of the claims 2 to 5, in which according to the predetermined Course of motion resulting functional positions of the functional part between the first functional position and the second functional position each one associated Swing angle between the minimum swing angle of the hinge parts and the maximum pivot angle of the hinge parts clearly assigned are. door hinge according to one or more of the preceding claims, at one of the two hinge parts has a torque device, at least in a partial region of the pivoting angle range Torque between the two hinge parts in the swivel axis exercises. door hinge according to claim 7, wherein the torque exerted by the torque device at least in a partial region of the swivel angle range from the swivel angle depends. door hinge according to claim 8, wherein the torque exerted by the torque device at least in a partial region of the pivoting angle range a to enlarge the Swivel angle between the two hinge parts expended Counteracts torque. door hinge according to one of the preceding claims, wherein the functional part over at least a guide on a first of the two hinge parts, preferably the hinge part with the torque device, relative to this hinge part movable is fixed and with the second of the two hinge parts such coupled is that when 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 to the second hinge part via a slotted guide is. door hinge according to claim 11, wherein the slotted guide one, in particular in Essentially 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 any one of claims 10 dependent claims, wherein the leadership, with which the functional part is fixed to the first hinge part is, at least one, preferably at least two, slotted guide (s) comprises or is. door hinge according to claim 13, wherein each slotted guide for guiding the functional part at the first Hinge part a guide slot, especially in the functional part, and one in the guide slot engaging guide pin, in particular on the second hinge part. door hinge according to claim 13 or claim 14, each in a relationship to claim 4, wherein the guide, with which the functional part is fixed to the first hinge part is, or their guide slot e) is or are substantially linear. door hinge according to one of the claims 10 to 15, in which the guide pin at least one slide tour formed with a screw, preferably in the associated hinge part is screwed. door hinge according to claim 10 or any one of claims 10 dependent claims, wherein the functional part at least in the predetermined functional position, preferably in any functional position from the first functional position up to the second functional position, with a free end over the first hinge part protrudes. Door hinge according to one or more of the preceding claims, wherein the functional Part is designed as a functional lever. door hinge according to claim 18, wherein the functional lever is a longer part and one of the longer Part at an angle, preferably has perpendicular, protruding shorter part. door hinge according to claim 19 in a relationship to claim 10 or claim related to claim 10, in which the longer one Part of the functional lever on the first hinge part over the Guides) is fixed and the shorter one Part of the functional lever with the second hinge part, in particular on the Link guide, is coupled. door hinge according to claim 20 in a relationship to claim 17 or claim related to claim 17, in which the longer one Part of the functional lever that over the first hinge part protruding free end of the functional lever having. household appliance in particular a household oven, a household refrigerator and / or -gefriergerätes, a household dishwasher or a household washing machine with a) a housing, b) an interior with an access opening, c) one of the access opening assigned Door, d) at least one door hinge according to one or more of claims 1 to 21, e) where one of the two hinge parts of the door hinge with the housing, in particular detachable, connected is and that at the other of the two hinge parts of the door hinge with the door, especially solvable, connected is, f) wherein the door at the minimum pivot angle between the two hinge parts occupies a minimum opening angle to the access opening and the access opening thereby closing and at the maximum swing angle between the two hinge parts a maximum opening angle to the access opening takes and g) wherein the functional part of the door hinge at least in the predetermined functional position one or more Function (s) triggers or fulfilled. household appliance according to claim 22, wherein the predetermined functional position of Functional part of the minimum opening angle or closed state of the door equivalent. household appliance according to claim 23, wherein the functional part in the predetermined Functional position causes a locking of the door, in particular by Engagement of a locking element on the functional part, preferably at its excellent free end. household appliance according to one of claims 22 to 24, in which the functional part in the predetermined functional position the switching on of an electrical consumer, 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 its free end, recorded and the match determines with the given functional position. household appliance according to one of claims 22 to 25, in which the functional part, preferably at its free End, with an outside of the door hinge arranged further torque means coupled or coupled is that an extra Torque between the two hinge parts exercises, in particular a torque that is at least in a partial region of the swivel angle range, preferably an end region adjoining the maximum pivoting angle, to enlarge the Swivel angle between the two hinge parts expended Counteracts torque. household appliance according to one of claims 22 to 26, in which the functional part coupled to a drive or can be coupled to implement a drive movement in a pivoting movement of Hinged parts for automatic pivoting of the door. household appliance according to claim 27, wherein the free end of the functional part a Has teeth that with a counter-toothing or drive screw the drive is engaged or brought. household appliance according to claim 27, wherein the functional part is one about the pivot axis rotatable shaft is or includes rotatable by the drive is or is rotated, preferably via at least one gear and a gear meshing or engageable in the gear or Drive screw of the drive. household appliance according to one of claims 22 to 29 with at least one other door hinge, in particular one another door hinge according to one or more of claims 1 to 21, with the housing on the one hand and the door on the other hand is connected.