DE102010002098A1 - Hinge device, domestic appliance with a door and method for retrofitting a damper - Google Patents

Abstract

Hinge device for a door (2) of a household appliance, in particular a cooking oven with a hinge housing (12), a sword (6) rotatably mounted thereon and a hinge bearing (18) in which the hinge housing (12) is arranged. A damper (72) for damping a closing movement of the door (2) can be attached to the hinge housing (12) or the hinge bearing (18) without tools.

Description

The present invention relates to a hinge device according to the preamble of patent claim 1, a domestic appliance according to the preamble of patent claim 9, and a method for retrofitting a damper according to the preamble of patent claim 11.

From the publication EP 1 847 670 A2 is a generic hinge for doors of household electrical appliances known. The hinge has a first element, a second element and a rocker arm which connects the first element to the second element. The second element consists essentially of a box-shaped housing which contains, inter alia, two elastic elements and a damper. The damper dampens the rocker arm during reciprocal movement of the first and second members.

The invention has for its object to provide a comparison with the prior art improved hinge device for a household appliance.

This object is achieved by a hinge device having the features of patent claim 1, a domestic appliance having the features of patent claim 9 and by a method having the features of patent claim 11. Advantageous embodiments are given in the dependent claims individually or in combination.

According to the characterizing part of claim 1, a damper for damping a closing movement of the door can be fastened to the hinge housing or the hinge bearing without tools. As a result, the hinge device can also be retrofitted without great effort with a damping. Even with an assembly line, in which the hinge device is manufactured, or weiterverbaut, for example, by simply plugging the damper in a short time a hinge device can be generated with damping.

In a preferred embodiment, the hinge housing in the hinge bearing can be disassembled and / or assembled without tools. A household appliance equipped with such a hinge device, e.g. As an oven is characterized easily retrofitted with an attachable to the hinge housing damping. Due to the ability to disassemble the hinge housing without tools from the hinge bearing, the retrofitting of a door damping can be done by a user of the household appliance.

To simplify the assembly process, it is proposed that the damper be fastened on the outside to the hinge housing or to the hinge bearing. As a result, the overall length of the hinge housing is reduced to a necessary minimum. Due to the reduced use of materials, the hinge housing can be produced more cheaply. In addition, the pack volume is reduced, resulting in savings in mass production.

Preferably, the damper on at least one resiliently connected locking element, which cooperates with corresponding, rigidly formed contours on the hinge bearing or on the hinge housing. Hinge or hinge housing are usually formed as rigid as possible to absorb the forces acting through the door weight forces. By introducing, for example, rectangular notches in the hinge bearing or the hinge housing, in which engage the damper resiliently formed locking elements, a cost-attachment option is created. There are no additional, resilient parts needed on the hinge bearing or on the hinge housing.

In an advantageous embodiment of the invention, a push element for transmitting a closing force of the door to the damper can be mounted without tools in the hinge housing. The push element is not required in a hinge device without damping. By a tool-free retrofittability of the thrust element, the hinge device without damping is inexpensive to manufacture and can still be retrofitted with a damping in conjunction with the tool-free mountability of damper and thrust element.

By at least one opening in the form of a keyhole on the hinge housing or the thrust element is arranged, there is a simple retrofitting of the thrust element. The hinge housing has, for example, on its upper side two keyhole-shaped openings and the thrust element corresponding thereto holding elements. In this case, the holding elements, for example, mushroom or screw head shaped, or in the form of a flared sheet metal tab, which widened plate-shaped in the upper end, may be formed. During assembly, the thrust element is inserted into the hinge housing until it overlaps the retaining elements with the respective wider subregion of the keyhole-shaped opening. Thereafter, the pusher member is pushed up until the holding members dive through the opening. By further insertion of the thrust element this is guided in the openings.

It is preferred if the pusher is held captive by this damper in this case. This eliminates additional Securing elements that are attached, for example, to the hinge housing after mounting the pusher.

By damping the door when closing at the earliest from a remaining opening angle of 40 °, a comfortable handling of the door is ensured.

An inventive household appliance has a hinge device as described above. The hinge device and the household appliance have corresponding holding means, which are arranged such that the hinge bearing and / or the hinge housing are freely accessible from a body of the household appliance or from the door and disassembled and / or mountable. This allows a user of the household appliance retrofitting the hinge device with a damper. Here are the term body the household appliance limiting wall parts without the door to understand. In particular, the body may in particular have two side walls, a rear wall, a bottom, a cover part, as well as a flange accessible with the door open. Under the term "freely accessible" understood that for disassembly or assembly of the hinge bearing and / or the hinge housing except the opening of the door no elements or assemblies such. B. a side wall of the household appliance, cover plates, or the like dismantled or must be mounted.

An inventive method for retrofitting a damper for an operational hinge device of a door of a household appliance suggests that the damper is attached to the hinge bearing or to the hinge housing without tools. By such, tool-free attachment of a damper process steps and thus time can be saved.

It may be advantageous if, before attaching the damper, a push element is mounted without tools, whereby a pivot lever of the hinge device is coupled to the damper. The tool-free installation of the pusher saves assembly time and also allows a user of the household appliance to carry out the retrofitting process itself. The initially undamped, but operational hinge device has characterized compared to the damped version only an additional element in the form of the pivot lever, whose function is needed only when retrofitting with a damper.

In an advantageous embodiment of the invention, the pivot lever is rotatably mounted on a clamping lever, wherein a tension compensating spring is tensioned by the tensioning lever. The tensioning lever is coupled to the door in such a way that it moves during a pivoting movement of the door and the weight compensating spring coupled to the tensioning lever is thus tensioned or relieved depending on the pivoting direction. The swivel lever mounted on the clamping lever follows the movement of the clamping lever. The tensioning lever is guided in the hinge housing and moves when opening or closing the door substantially along a longitudinal extent of the hinge housing, which results from the weight compensation spring integrated therein.

Preferably, the pivot lever is offset from a fixed opening angle of the door by a arranged in the hinge housing locking lug in a rotation which acts on the damper via the push rod. Such a rotation of the pivot lever, a greater deflection of the damper against a direct connection of the clamping lever is achieved on the thrust element. By a distance from a hinge axis of a connection of one end of the clamping lever on the sword results in a pivoting of the door, a rotation of this end about the hinge axis. Due to this rotational movement on a circular path, the component of motion steadily decreases in the direction of the weight compensating spring toward the closed position of the door. About the leverage ratios of the pivot lever, the movement component is translated in the direction of the weight compensation spring so that there is a greater deflection of the damper.

Further features and advantages of the invention will become apparent from the following description of an embodiment with reference to the accompanying figures. Show it:

1 a household appliance in a spatial representation;

2 a hinge device of the household appliance with a hinged housing mounted in a hinge bearing;

3 a sectional view taken along the line III-III through the in 2 shown hinge device in a mounting position in the household appliance;

4 a detailed view 3 ;

5 a detailed view of a thrust element of the hinge device and acting on the thrust element elements in a sectional view and

6 a spatial representation of the hinge housing.

In 1 is a household appliance with a pivotally mounted on a hinge device door 2 shown, in each case on both sides a sword 6 the hinge device is mounted. The household appliance is to the outside through a carcass 8th limited, the two side walls, a floor, a ceiling, a rear wall and a flange 10 having. The swords 6 each dive through a receiving opening 4 in the flange 10 through and in the door 2 kept detachable.

Inside the body 8th , essentially behind the flange 10 , are two identical formed hinge housing 12 ( 2 ) arranged. The hinge housing 12 are in their longitudinal direction l substantially horizontal in the body 8th arranged. The hinge housing 12 has side walls 14 on, in which door side a hinge axis 16 is attached. The sword 6 is through the hinge axis 16 rotatable relative to the hinge housing 12 stored. The hinge housing 12 is inside the body 8th in a hinge warehouse 18 attached. Towards the door 2 has the hinge bearing 18 an insertion opening 20 for the hinge housing 12 on. The insertion opening 20 points opposite the adjacent area of the hinge bearing 18 a larger width b. The hinge housing 12 is door side over the insertion opening 20 in the hinge bearing 18 inserted and locked in an end position with the hinge bearing 18 , In one of the slot 20 opposite, rear section of the hinge bearing 18 are formed opposite to the two side surfaces breakthroughs 21 arranged. These are near a bottom 24 of the hinge bearing 18 arranged and form a receptacle for the bearing axis 22 , Is the bearing axis 22 with the breakthroughs 21 engaged, then it is the hinge housing 12 in the hinge warehouse 18 pivoted. A guide element 26 is as one, parallel to the hinge axis 16 extending axis formed in two oppositely disposed slots 28 the side walls 14 of the hinge housing 12 is slidably mounted. The guide element 26 protrudes over the side walls 14 of the hinge housing 12 out and thereby supports itself in a backdrop 30 of the hinge bearing 18 from. The scenery 30 has a plateau in the middle 32 on, the largest distance of the scenery 30 to the bottom 24 of the hinge bearing 18 forms. An elastic element 34 , above the slot 20 at the hinge bearing 18 is arranged acts on the hinge housing 12 and press this with a force F towards the bottom 24 , The elastic element 34 is designed in the form of a double-tongued leaf spring. The hinge housing 12 is with the door closed 2 over the bearing axis 22 and over the elastic element 34 held in its final position. The hinge housing 12 is against the spring force of the elastic element 34 from the hinge bearing 18 pulled out on the door side. The guide element slides 26 from its final position over the plateau 32 and deforms the elastic element 34 , After the plateau 32 leads the scenery 30 the guide element 26 , supported by the elastic element 34 , back towards the bottom 24 , In this section of the scenery 30 the width b of the hinge bearing is greater, whereby the guide element 26 from the backdrop 30 slides, and the hinge housing 12 thereby in the direction of the door 2 is removable. At one of the door 2 opposite end portion of the hinge bearing 18 is a damper 72 via a locking element 74 attached. The locking element 74 engages in a recess 78 of the hinge bearing 18 one. locking element 74 and recess 78 are designed such that the damper 72 can be mounted without tools.

In 3 is a recording 36 the door 2 depicted in the sword 6 is stored. A tension lever 38 is about one of the hinge axis 16 spaced tension lever bearing 40 to the sword 6 coupled. With a pivotal movement of the door 2 this works when the door is closed 2 to the right of the hinge axis 16 arranged tension lever bearings 40 in a circular motion around the hinge axis 16 , The tension lever 38 is with a counterbalance spring 42 coupled. This forms a counterforce to the weight of the door 2 , allowing a comfortable opening and closing the door 2 is guaranteed. The weight compensation spring 42 is about a formed as a hole spring receptacle 46 in an adjusting lever 48 held. The adjusting lever 48 is about an adjustment lever bearing 50 rotatable on the clamping lever 38 stored. One end of the adjusting lever 48 protrudes from the hinge housing 12 top out and dive between the two tongues of the elastic element 34 by. At this end is an adjustment 52 via a clamping element 54 stored. The tensioning element 54 is essentially designed as a nut, in the one on the adjusting element 52 pronounced thread (not shown) engages. The tensioning element 54 is rotatable on the adjusting lever 48 mounted to a pivoting movement of the adjusting element 52 to enable. The trained as a screw adjustment 52 Used to set a spring preload of the counterbalance spring 42 , About a floating bearing 56 is the adjustment element 52 with its door-side end to the clamping lever 38 connected so that the adjustment 52 is rotatably mounted. When opening the door 2 the tension lever bearing is running 40 in a circular motion around the hinge axis 16 , where first the clamping lever 38 is essentially raised. By lifting the clamping lever 38 is about the floating bearing 56 also designed as a screw adjustment 52 raised on the door side. The door side arranged screw drive (slot) of the adjustment 52 is by raising freely accessible to a screwdriver, creating a preload of the counterbalance spring 42 is adjustable. A latch 58 is movable on the sword 6 stored and forms a bearing for a movable lever 60 , bars 58 and levers 60 are so unfoldable that the lever 60 when closing the door 2 on a roll 62 supports and thereby further closing the door 2 prevented. A pulling force of the counterbalance spring 42 on the door 2 is caught by it. The door 2 can be removed without tools in this state for cleaning purposes by the swords 6 from their recordings 36 to be pulled. By inserting the swords 6 in the recordings 36 is the door 2 reassemblable. Will the door 2 a little further, the lever will turn 60 and the latch 58 free and can be folded. The door 2 is now completely closable again. The role 62 is at a temple 64 attached, over the pivot 66 rotatable on the clamping lever 38 is stored. The coat hanger 64 forms a bearing for a compression spring 68 with its opposite end on the tension lever 38 is held. The sword 6 points near the hinge axis 16 an investment contour 70 on, which is designed such that it at an opening angle α of about 25 °, the closing movement of the door 2 by attachment to the roll 62 stops. To further close the door 2 this is against the spring force of the compression spring 68 pushed further. The plant contour 70 is formed such that close to the closed position of the door 2 over the compression spring 68 an additional force towards the closed position on the door 2 is exercised.

4 shows a detailed view of the hinge bearing 18 arranged damper 72 , In the damper 72 is a pestle 76 arranged over an angle 80 a pushing element 82 is pressed. The pestle 76 represents a commercially available, in particular from the furniture industry known damping element.

According to 5 becomes a movement of a swing lever 84 over the push element 82 on the pestle 76 of the damper 72 transfer. Through the guide element 26 is the pivot lever 84 rotatable on the clamping lever 38 ( 3 ) stored. Moves the tension lever 38 by closing the door towards the damper 72 , so causes a locking nose 88 a rotation of the pivot lever 84 , causing the pestle 76 is moved. By the pivot lever 84 , which at one end with the locking nose 88 and at the other end with the pusher 82 Corresponds, is over the leverage one to the movement of the clamping lever 38 longer push movement of the push element 82 reached. This is necessary because the movement component of the clamping lever 38 towards damper 72 at a small opening angle α of the door 2 too low for sufficient damping. The locking nose 88 is through one of the hinge housing 12 issued sheet metal tabs formed. The position of the locking nose 88 is chosen so that the plunger 76 moved from a door opening angle α of 30 ° and the door 2 is dampened.

6 shows an embodiment of the hinge housing 12 in which two keyhole-shaped openings 90 are formed, through which the thrust element 82 with dismounted damper 72 can be mounted without tools. The push element 82 has two angularly shaped retaining elements 91 on top, with the openings 90 correspond. In an alternative embodiment (not shown), the pusher element is 82 over on the side walls 14 of the hinge housing 12 arranged contours according to a drawer slide insertable.

LIST OF REFERENCE NUMBERS

2

door

4

receiving opening

6

sword

8th

corpus

10

flange

12

hinge housing

14

Side wall

16

hinge axis

18

hinge bearing

20

insertion opening

21

breakthrough

22

bearing axle

24

bottom

26

guide element

28

slot

30

scenery

32

plateau

34

elastic element

36

admission

38

clamping lever

40

Clamping lever bearing

42

Counterbalance spring

46

spring mount

48

adjusting

50

Verstellhebellager

52

adjusting

54

clamping element

56

movable bearing

58

bars

60

lever

62

role

64

hanger

66

pivot point

68

compression spring

70

contact contour

72

damper

74

locking element

76

tappet

78

recess

80

angle

82

push element

84

pivoting lever

88

locking tab

90

opening

91

retaining element

α

opening angle

b

width

F

force

l

longitudinal direction

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 1847670 A2 [0002]

Claims (14)

Hinge device for a door ( 2 ) of a household appliance, in particular a Garofens with a hinge housing ( 12 ), a rotatably mounted sword ( 6 ) and a hinge bearing ( 18 ), in which the hinge housing ( 12 ), characterized in that on the hinge housing ( 12 ) or the hinge bearing ( 18 ) without tools a damper ( 72 ) for damping a closing movement of the door ( 2 ) is attachable. Hinge device according to claim 1, characterized in that the hinge housing ( 12 ) in the hinge bearing ( 18 ) is arranged detachable and / or mountable without tools. Hinge device according to claim 1 or 2, characterized in that the damper ( 72 ) on the outside of the hinge housing ( 12 ) or to the hinge bearing ( 18 ) is attachable. Hinge device according to one of the preceding claims 1 to 3, characterized in that the damper ( 72 ) at least one resiliently connected locking element ( 74 ) having corresponding, rigidly formed contours on the hinge bearing ( 18 ) or hinge housing ( 12 ) cooperates. Hinge device according to one of the preceding claims 1 to 4, characterized in that in the hinge housing ( 12 ) a push element without tools ( 82 ) for transmitting a closing force of the door ( 2 ) on the damper ( 72 ) is mountable. Hinge device according to claim 5, characterized in that at least one opening ( 90 ) in the form of a keyhole on the hinge housing ( 12 ) or on the push element ( 82 ) is arranged. Hinge device according to claim 5 or 6, characterized in that when the damper is mounted ( 72 ) through this the thrust element ( 82 ) is held captive. Hinge device according to one of the preceding claims 1 to 7, characterized in that the door ( 2 ) is damped when closing at least from a remaining opening angle (α) of 40 °. Household appliance with a door ( 2 ) and a hinge device according to one of the preceding claims 1 to 8. Domestic appliance according to claim 9, characterized in that the hinge device and the household appliance have corresponding holding means, which are arranged such that the hinge bearing ( 18 ) and / or the hinge housing ( 12 ) freely accessible from a body of the household appliance or out of the door ( 2 ) are removable and / or mountable. Method for retrofitting a damper ( 72 ) for an operational hinge device of a door ( 2 ) of a household appliance, in particular a Garofens, with a hinge bearing ( 18 ), in which a hinge housing ( 12 ), characterized in that to the hinge bearing ( 18 ) or to the hinge housing ( 12 ) without tools the damper ( 72 ) is attached. A method of retrofitting a damper according to claim 11, characterized in that before fixing the damper ( 72 ) a pusher element ( 82 ) is mounted without tools, whereby a pivot lever ( 84 ) of the hinge device with the damper ( 72 ) is coupled. A method for retrofitting a damper according to claim 12, characterized in that the pivot lever ( 84 ) on a tension lever ( 38 ) is rotatably mounted and by the clamping lever ( 38 ) a counterbalance spring ( 42 ) is stretched. A method for retrofitting a damper according to claim 12 or 13, characterized in that the pivot lever ( 84 ) from a defined opening angle (α) of the door ( 2 ) by a in the hinge housing ( 12 ) arranged locking nose ( 88 ) is set in a rotation, which via the thrust element ( 82 ) on the damper ( 72 ) acts.

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