DE102010003897A1 - Hinge for a household appliance door - Google Patents

Abstract

The invention relates to a hinge (10) for a domestic appliance door (70) with an articulated arm (20) rotatably mounted on the hinge and a spring-supported plunger (35) for supporting the movement of the articulated arm (20) into at least a first end position. The plunger (35) is connected to a damper (50, 52) in such a way that the damper is brought into contact with a stop (60) when the articulated arm moves into the first end position and the movement is damped.

Description

The invention relates to a hinge housing for a household appliance door, a household appliance door and a household appliance.

It is off DE 10 2007 041 909 A1 a hinge housing for a household appliance, such as in particular an oven, known, in which a top damper is arranged in a receptacle of the hinge housing. Often used in home appliances damper-assisted spring systems, the spring support is used to compensate for the weight of the door. In order to allow a smooth, uniform and impact-free (or -arm) closing of the appliance door, the damper support is used, which engages near the closed position of the door and which slows down the closing movement caused by the user and / or the spring support.

It is an object of the present invention to provide a way to simple, flexible, visually discreet and space-saving essay damping of household appliance doors, the damper should also be easily accessible for service purposes.

The object is achieved by a hinge according to claim 1, a corresponding domestic appliance door and a corresponding domestic appliance.

According to the invention, a hinge for a household appliance door is provided with a hinge arm rotatably mounted on the hinge and a spring-loaded plunger to support the movement of the articulated arm in at least a first end position, wherein the plunger is connected to a damper such that the damper in a movement of the articulated arm in the first end position can be brought into contact with a stop and thereby the said movement can be damped. An advantage of this design is the low cost compared to known embodiments, since according to the invention either a receptacle for the damper is provided on the plunger or a cost-effective adapter, such as a simple injection molded part, can be interposed. This is less expensive than the known from the prior art storage of the damper in the housing of the hinge. When removing the assembly of the male part, the compression spring and the plunger from the hinge housing, the damper is also removed. This facilitates the work in case of service.

Another advantage results from the movement of the plunger. Thus, due to the design of the ram react either with an exclusive axial movement or a combined sliding and pivoting movement on the movement of the articulated arm. Especially in the latter case, the structure described is advantageous because this ensures that acting on the damper exclusively or at least presumptuous axial forces and thus increases the life of the damper.

Another advantage results from the possibility to arrange the damper closer to the compression spring. In the application of an oven, it is essential not to expose the damper to high temperatures, as an oil damper is usually used up to 150 ° C. Inadmissibly high temperatures are avoided if, with the oven door closed, the damper is arranged as far down as possible, ie directly in extension of the plunger, or in the vicinity of the spring.

In addition, an adapter is used for the storage and management of the actuator or the damping cylinder relative to the plunger. Although the adapter is an additional component, it may still be advantageous because it allows the actuator or the damping cylinder out and protected against lateral forces.

In particular, the adapter is permanently attached to the plunger of the hinge. As a connection for this purpose own screw, a bond, a hiding or a press fit. Thus, practically an extension of the plunger is realized, in which the actuator or damping cylinder can be removably received.

Advantageously, the damper comprises an actuator and a damping cylinder and the actuator is mounted on the plunger. In particular, an oil or air damper is used. A damper with damping cylinder is suitable to record over a Dämpfweg of example. 5 mm significant damping forces. Since the actuator has a round cross-section of 1 mm, it is structurally easily possible to inexpensively attach a corresponding receiving bore to the tappet (or an adapter which will be described later). In addition, the structure causes the damping cylinder to include the contact surface for abutment. Since the damping cylinder is often made of a plastic material, noises are effectively damped when in contact pedaling from the damping cylinder and stop.

In an alternative embodiment, damping cylinder is mounted on the plunger of the hinge. This structure is particularly advantageous when the diameter of the plunger and the damping cylinder are approximately equal, since then the adapter can consist of a piece of pipe in the simplest case.

Advantageously, in at least one angular position of the articulated arm, the distance from the plunger to the stop sufficiently large that the damper is manually removable and interchangeable. In an alternative embodiment, in which the hinge, so in particular the male part, the compression spring and the plunger is not detachably connected to the hinge housing, ie the part which is glued to the door, a viewing cover arranged in front of the compression spring and the damper be. As will be described in detail later, at certain angles of the articulated arm to the hinge body, the distance from the plunger to the stop is increased. Thus, after removal of the visible cover and without disassembly of other components of the damper can be replaced in case of service. In addition, such a view covering brings the advantage of reducing thermal bridges.

In addition, said stop part of the hinge body, which is inseparably connected to the appliance door - preferably glued - is. Since appreciable forces can be applied to the appliance door, the support of the hinge, which is glued to the door, made of a sufficiently strong sheet metal and it is therefore possible to form the stop on this part with a simple stamping and bending operation.

In an alternative embodiment, the articulated arm can be connected to the compression spring inseparably connected to the hinge body. In this case, the stop may be part of the cover that protects the compression spring and the plunger from the user and after removing this cover, the damper is easily removed. This cover is also to be provided for design reasons and must be removed for service tasks. Since the stop is automatically removed when removed, the damper can be removed very easily and without an axial limitation.

A household appliance door has at least one and preferably two corresponding hinges and is used with a household appliance, in particular an oven. The household appliance door is opened folding down and the damper is located in partially open angular positions above the plunger so that it can not fall out due to gravity.

Hereinafter, the hinge will be described in more detail with reference to an embodiment.

Show it:

1 an oblique view of a hinge,

2 a side view of the hinge with an articulated arm in its closed position and

3 the side view of the hinge at a by about 30 ° open position of the articulated arm.

1 shows an oblique view of an adhesive door profile, which serves as a hinge 10 for a oven door 70 serves. This hinge comes with a contact surface 12 with the oven door 70 bonded. This is only partially shown and has a second hinge, which offset parallel to the first in the vicinity of a second edge of the oven door 70 is attached.

The hinge 10 mounted articulated arm 20 (And so the entire door) is mounted in a corresponding receptacle of the oven (not shown) and locked there. According to 1 and 2 is the hinge in its closed position as the first end position, ie in normal installation conditions, the oven door is closed. When the oven door is opened, resulting in an opening angle of 30 °, the in 3 shown angular position of the articulated arm 20 and the oven door is pivotable from this position further into a second end position, which pivoting of the articulated arm 20 corresponds to 90 ° and in which the oven door comes in a horizontal, completely releasing the oven interior position.

In the hinge housing 11 are a pestle 35 , a compression spring 30 , an adapter 40 and a damper with a damper cylinder 50 and a press 52 added.

The pestle 35 is axially displaceable in the hinge housing depending on the opening angle of the oven door and thereby with the compression spring 30 biased. At the position of 1 and 2 the compression spring is maximally relaxed. In an open state of the door or partially open state of the door 3 became the pestle 35 in the direction of the articulated arm 20 shifted to the left, causing the compression spring 30 is further compressed to oppose the weight of the oven door as part of the weight compensation system resistance. Due to the design, a pure displacement movement or a combined displacement and pivotal movement of the plunger 35 be provided.

In the in 3 shown view, so a door opening angle of 30 ° is the plunger 35 move to the left and the spring 30 accordingly more tense. At the end of the pestle 30 from the articulated arm 20 is spaced, is an adapter 40 provided for receiving the damper 50 . 52 is used, wherein the actuator 52 in the adapter 40 is stored. The damper is preferably an oil damper, but also an air damper is advantageous. A spring provided in the damper (not shown) counteracts the insertion of the actuator 52 in the steaming cylinder 50 ,

If now the oven door 70 from a partially opened position (eg 30 ° of 3 ) in a closed position of 2 is closed, so first moves the plunger to the right, the compression spring 30 is relaxed. At some point the steaming cylinder comes 50 in contact with the attack 60 , From this point, the damper causes a damping force, which counteracts the closing of the oven door, ie against the spring force of the spring 30 , works. This will cause the closing speed of the oven door 70 limited and so a soft, uniform and impact-free closing the oven door 70 reached. The housing of the damper 50 is preferably made of plastic, so that when in contact stepping from the damping cylinder 50 to the stop 60 no disturbing noise is generated.

When reopening the oven door, the compression spring is first stretched and provided in the damper spring causes the actuator from the steam cylinder in the in 3 shown position extends.

The actuator 52 is with a play or slight transition fit in the adapter 40 used, so that preferably both parts can move freely. In case of service, the service employee can easily remove the damper in an open position of the oven door. To do this, first remove the oven door from the oven and then open the screw 32 , Subsequently, he can the assembly of the male part 20 with the compression spring 30 and the pestle 35 to the left (see 1 ) and thus reaches the damper, which he can now easily remove. Gravity acts in the installation against an accidental displacement or falling out of the damper within the adapter. This is also prevented by the internal friction and spatial dimensions. In addition, the damper 50 . 52 z. B. do not fall out during a transport of the oven, since in this state, the oven door closed and thus the damper is axially braced.

As an alternative to the described embodiment, an adapter is not absolutely necessary. Rather, the ram can 35 of the hinge have an axial blind hole (not shown), in which the actuator 52 the damper is received. Also may (not shown) instead of the actuator 52 the steaming cylinder 50 be absorbed in the adapter, so that the actuator 52 in contact with the attack 60 comes.

LIST OF REFERENCE NUMBERS

10

hinge

11

hinge housing

12

contact area

20

articulated arm

30

compression spring

32

screw

35

tappet

40

adapter

50

damper cylinder

52

actuator

60

attack

70

House door / oven door

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

• DE 102007041909 A1 [0002]

Claims (10)

Hinge ( 10 ) for a household appliance door ( 70 ) with a hinge arm rotatably mounted on the hinge ( 20 ) and a spring-assisted ram ( 35 ) in support of the movement of the articulated arm ( 20 ) in at least a first end position characterized in that the plunger ( 35 ) with a damper ( 50 . 52 ) is connected such that the damper in a movement of the articulated arm in the first end position in contact with a stop ( 60 ) is brought, whereby the said movement is damped. Hinge ( 10 ) according to claim 1, characterized in that for the storage and management of the damper ( 50 . 52 ) opposite the plunger ( 35 ) an adapter ( 40 ) is provided. Hinge ( 10 ) according to claim 2, characterized in that the adapter ( 40 ) on the plunger ( 35 ) is permanently attached. Hinge ( 10 ) according to one of claims 1 to 3, characterized in that the damper ( 50 . 52 ) an actuator ( 52 ) and a steam cylinder ( 50 ) and that the actuator ( 52 ) on the plunger ( 35 ) is stored. Hinge according to one of claims 1 to 3, characterized in that the damper ( 50 . 52 ) an actuator ( 52 ) and a steam cylinder ( 50 ) and that the damping cylinder ( 50 ) on the plunger ( 35 ) is stored. Hinge according to one of the preceding claims, characterized in that in at least one angular position of the articulated arm ( 20 ) the distance from the plunger ( 35 ) to the attack ( 60 ) is sufficiently large that the damper ( 50 . 52 ) is manually removable and replaceable. Hinge according to one of the preceding claims, characterized in that the stop ( 60 ) Is part of the hinge body, which with the appliance door ( 70 ) inseparably connected, preferably glued, is. Hinge according to one of claims 1-6, characterized in that the stop ( 60 ) Is part of a cover, which the compression spring ( 30 ) and the plunger ( 35 ) protects against the user and that after removing the cover of the damper ( 50 . 52 ) is easy to remove. Domestic appliance door ( 70 ) with at least one hinge ( 10 ) according to any one of the preceding claims. Household appliance with a household appliance door ( 70 ) with at least one hinge ( 10 ) is mounted according to one of claims 1-8 relative to the household appliance, wherein the household appliance door ( 70 ) can be folded down to open and the damper ( 50 . 52 ) in partially opened positions of the appliance door ( 70 ) above the plunger ( 35 ) is located.

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