WO2017097544A1

WO2017097544A1 - Hinge for a household device and household device having household device hinges of this type

Info

Publication number: WO2017097544A1
Application number: PCT/EP2016/077654
Authority: WO
Inventors: Jérémy BUCHMANN; Jürgen DESOR
Original assignee: BSH Hausgeräte GmbH
Priority date: 2015-12-10
Filing date: 2016-11-15
Publication date: 2017-06-15

Abstract

The invention relates to a household device hinge comprising a hinge arm (7) for connection to a household device door (2), which is rotatably connected to hinge housing (24) at a first rotational shaft (D1), and comprising a deflection element (25) which is rotatably connected to the hinge arm (7) at a second rotational shaft (D2), which is at least partially accommodated in the hinge housing (4) and which can be slidingly guided there by means of a longitudinal guide (26), wherein the deflection element (25) is in contact with the guide (26) when the hinge (23) is completely open, such that the hinge arm (7) exerts a lever force onto the first rotational shaft (D1), and the deflection element (25) has at least one support region (18) which is supported on the first rotational shaft (D1) when the hinge (23) is completely open in such a way that same exerts a counter force to the lever force. A household device (1) has household device hinges (23) of this type. The invention can be particularly advantageously applied in household devices having an oven, in particular independent ovens or stoves.

Description

Home appliances hinge and home appliance with such household appliances hinges

The invention relates to a household appliance hinge, comprising a hinge arm for connection to a household appliance door, which is rotatably connected to a hinge housing at a first axis of rotation. The invention further relates to a household appliance, comprising a treatment room, which has a front-side feed opening, and a horizontally pivotable door for closing the feed opening, which door is connected to the rest of the domestic appliance via such household appliances hinges. The invention is particularly advantageously applicable to household appliances having an oven, in particular stand-alone ovens or stoves.

DE 10 2008 010 523 A1 discloses a domestic appliance device with a domestic appliance door and at least one domestic appliance door storage unit which supports the household appliance door pivotably about an axis. In order to achieve a coordinated mobility of the domestic appliance door, it is proposed that the domestic appliance device has at least one locking unit which is provided to fix the domestic appliance door storage unit in at least one pivot position.

DE 199 23 994 A1 discloses a household appliance hinge device with locking surfaces, which hold the door in the horizontal open position against a spring door closing force, even if a glass plate of the door is removed for cleaning, but the holding force by a manual force on the door in the closing direction is surmountable.

DE 199 23 996 A1 discloses a domestic appliance hinge device with a damping means for damping a collision of stop surfaces.

EP 1 961 901 B1 discloses a hinge for wings or doors, in particular of electrical devices, comprising a first element and a second element, a lever for connecting the first and the second element, wherein the lever on the second element by means of a Rotates pin, which makes the first and the second element with a tilting action relative to each other movable, wherein the first and the second Ele- one on a frame and the other on a wing or door, so that the wing or door can move relative to the frame between a closed position and an open position, the second element being box-shaped and containing resilient means, which are connected to the lever by a rod which slides in the second box-shaped element, the hinge further comprising friction means for applying a braking action to the reciprocal sliding of the rod relative to the second box-shaped element, the friction means comprising a friction element disposed between the rod and the second box-shaped element is inserted and connected to the latter, the second box-shaped element comprising two walls extending longitudinally opposite each other, the hinge being characterized in that the opposite longitudinal walls of the second box-shaped element correspond to corresponding recesses which form a region for receiving the friction element, wherein the friction element in the region exerts no friction on the longitudinal walls.

EP 2 620 576 A2 discloses a hinge mechanism having a friction system in the interior used in oven doors. This friction system helps keep the door in a balanced position during opening and closing by means of the frictional force.

It is the object of the present invention to overcome the disadvantages of the prior art at least partially and in particular to provide a hinge, in particular heavy-duty horizontal hinge, for household appliances, which withstands particularly high loads and is particularly durable.

This object is achieved according to the features of the independent claims. Preferred embodiments are in particular the dependent claims.

The object is achieved by a household appliance hinge, comprising a hinge arm for connection to a household appliance door, which is rotatably connected to a hinge housing at a first axis of rotation, and a deflecting bar which is rotatably connected to the hinge arm at a second axis of rotation and at least partially in housed in the hinge housing and there is slidably guided by means of an elongated guide, wherein the deflecting on at full open hinge on Stop is located with the guide, so that the hinge arm exerts a leverage force on the first axis of rotation, and the deflecting bracket has at least one support portion which is supported at full open hinge so on the first axis of rotation that it exerts a leverage force counteracting force on it.

This household appliance hinge has the advantage that a load of the first axis of rotation or an associated axle element (such as a pin, bolt, etc.) is at least partially compensated or compensated by a lever force exerted thereon by the support region of the deflecting bar. This in turn allows the hinge to withstand particularly high door loads and / or pulses generated by movement of the door into its open position. This in turn allows a particularly durable household appliance hinge that can withstand many tens of thousands of open and close cycles without high material costs. In particular, bending and / or deflection of the axis element associated with the first axis of rotation is made possible.

In particular, the deflecting bar can be a material part-in particular a piece of sheet metal-with two side parts, the two side parts being arranged at least approximately parallel to one another and spaced apart from one another. In particular, they can be mirror-symmetrical to one another. The first and the second axis of rotation or associated axle elements can be rotatably guided by both side parts. For this purpose, the side parts may have respective holes for rotatably receiving the axle elements. The deflecting bar can have a supporting area on each of the two side parts. This results in the advantage that the forces introduced into the first axis of rotation or the associated axle element via the support area can be introduced particularly uniformly.

The hinge arm can be inserted or used for connection to a household appliance door, for example in an associated door leaf.

The fact that the deflector is slidably guidable in the hinge housing may include both that it is in a movement of the door in the hinge housing only

slidably guided, as well as that it is displaceably guided in a movement of the door in the hinge housing and is additionally rotated. It is an embodiment that the deflecting at an opening movement of the hinge at the same time in its leadership and with its support area comes into abutment. This ensures that a transverse load of the first axis of rotation or an associated axle element is particularly low.

It is still an embodiment that, when the hinge is fully open, the first axis of rotation is arranged in front of the second axis of rotation and the second axis of rotation is arranged in front of the elongated channel. Thus, a simple and robust articulated connection between the first axis of rotation and a displaceable in the guide shaft element can be provided, which securely holds the door at the open end position or full opening of the door. In this case, a position with respect to a front side of the domestic appliance can be understood as "front-side", in which case "front-side forward" can be understood to mean, in particular, a position which is further in front of the household appliance.

It is a further embodiment that the at least one support region is designed to be complementary to an axis element of the first axis of rotation. As a result, voltage peaks between the support region and the axle element of the first axis of rotation can be avoided. For example, the axle element may have a cylindrical side surface and the support region may have a suitably spherical concave shape or shape.

It is yet another embodiment that the deflecting to its leadership in the hinge housing has a rigid axle member which is slidably movable in the elongated guide. This allows a robust and smooth-running leadership implement.

It is yet an embodiment that the hinge arm is formed at its device-side end portion for rotation about the first axis of rotation and about the second axis of rotation, the first axis of rotation is disposed below the second axis of rotation and the elongate guide is disposed above the first axis of rotation. This results in the advantage that it is possible to provide such a door holding and easily rotatable hinge. It is also an embodiment that the second axis of rotation is at a full open position of the hinge front side in front of the first axis of rotation and is located at a closed position of the hinge behind the first axis of rotation. Thus, in particular a simple rotation of the hinge can be supported.

It is also an embodiment that the hinge is designed to support or withstand a load on the hinge arm of at least 150 N, in particular of at least 175 N, in particular of at least 200 N, in particular of at least 440 N. Thus, in particular high loads and impulses can be absorbed, as they can occur in a - even peppy - opening a door, in particular oven door. If the door is held by two hinges, they can carry or hold a correspondingly double load of at least 300 N, in particular of at least 350 N, in particular of at least 400 N, in particular of at least 440 N. The object is also achieved by a household appliance, comprising a treatment room, which has a front-side charging opening, and a horizontal

pivotable door for closing the loading opening, which door is connected by hinges to the rest of the household appliance, the hinges are household appliances hinges as described above.

The household appliance can be designed analogously to the household appliance hinge and has the same advantages.

It is an embodiment that the household appliance has an oven, the treatment room is a furnace room and the door is a oven door. In particular, for this purpose, the household appliance hinge is advantageously used, since oven doors are particularly heavy due to their thermal insulation and possibly ventilation structure.

It is a development that the household appliance hinge is attached to a frame of the household appliance, in particular left or right side next to the feed opening.

The above-described characteristics, features and advantages of this invention as well as the manner in which they are achieved will become clearer and more clearly understood Connection with the following schematic description of an embodiment which is explained in more detail in connection with the drawings. shows in a sectional view obliquely from behind components of a household appliance in the form of a baking oven with the oven door open including a hinge according to a first embodiment;

shows in a view obliquely from the front a section of the oven door with an inserted therein hinge arm of the hinge according to the first embodiment;

shows a side view of a sketch of the hinge according to the first embodiment in its fully open state;

shows a side view of a hinge according to a second embodiment in its closed state; and

shows a side view of a hinge according to a second embodiment in its fully open state.

1 shows in a sectional view from obliquely behind components of a household appliance in the form of a baking oven 1 with open oven door 2. The oven door 2 is by means of a hinge 3 about a horizontal first axis of rotation D1 (also referred to as "hinge arm rotation axis") rotatable. For this purpose, the hinge 3 a hinge housing 4 made of sheet steel with two mutually parallel side panels or Gehäusewangen 4a and 4b. The hinge housing 4 may have an inverted "U" shape or a rectangular "0" shape in front view or front view, for example. The hinge housing 4 may be a sheet metal part.

In the hinge housing 4, a longitudinally displaceable and possibly rotatable deflection bar 5 is used. The deflecting bar 5 has a right side part 5a when viewed from the front and a left side part 5b which are at least substantially mirror-symmetrical. The deflecting bracket 5 may be a one-piece or unitary sheet metal part.

The hinge housing 4 has to guide the Umlenkbügels 5 a housing groove 6, ie here: in each of its two Gehäusewangen 4a and 4b each have a housing groove 6. The deflection bracket 5 is projecting with a front side of the hinge housing 4 Hinge arm 7 rotatably connected to a second axis of rotation D2. The housing groove 6 is disposed above the first rotation axis D1 and the second rotation axis D2.

The hinge arm 7 is inserted for connection to the oven door 2 in a door leaf 8 of the oven door 2. The hinge arm 7 is rotatably connected to the hinge housing 4 at the first axis of rotation D1. The oven door 2 can close a front-side charging opening 9 of a furnace chamber 10 serving as a treatment space.

2 shows an oblique view of a section of the door leaf 8 with the hinge arm 7 inserted therein. The hinge arm 7 has through holes for the first axis of rotation D1 and the second axis of rotation at its device-side end region or end section, which protrudes from the door leaf 8 D2 up. The first axis of rotation D1 is arranged below the second axis of rotation D2. Returning to FIG. 1, the hinges 3 for connecting the oven door 2 to the rest of the oven 1 are fastened to a front frame piece of a frame 1 1 of the oven 1. The two frame pieces of the frame 1 1 are arranged to the left and right of the feed opening 9. The hinge 3 rests against the frame 11 at the rear, whereby a part of the deflecting bar 5 and a frontally projecting part 12 of the hinge housing 4, through which the first axis of rotation D1 extends, are also separated by a vertical longitudinal opening (see FIG. ) in the frame 1 1 at the front in front of the frame 1 1 protrude.

The hinges 3 are freely rotatably connected to the frame 1 1 by means of respective screws 14 via lugs 13 bent up from an upper side of the respective hinge housing 4 on the front side. The hinges 3 do not rest on their underside, so that they float freely are hung on the frame 1 1. For this purpose, the hinges 3 are slotted on their underside and hung there without support in a front plate 15. The missing support means, referring again to FIG. 1 or FIG. 2, that the hinges 3 can oscillate about a vertical screw axis A (which is perpendicular to the axis of rotation D) fixed by the screws 14. Thus, caused by assembly and component tolerances can be effectively compensated in the hinge 3, which greatly increases a life of the hinges 3. 3 shows a side view of a sketch of the hinge 3 in its fully open position. In this position of the hinge 3, the second axis of rotation D2 is arranged frontally in front of the first axis of rotation D1 and are both axes of rotation D1 and D2 in front of the

Housing groove 6 is arranged.

The deflecting bar 5 has in this case to its leadership in the housing groove 6 on a shaft member 16 which is displaceably movable in the housing groove 6, as indicated by the double arrow. The axle element 16 can have, for example, a rigid axle (for example a pin or bolt) and at its end a respective bushing and a retaining ring (not shown). Depending on a liner runs in the housing groove 6 a respective

Housing cheek 4a and 4b.

In the fully open position, the deflecting bar 5 is on the axle 16 to stop in the housing groove 6, so that the hinge arm 7 a lever force on the first axis of rotation D1 or a pin 17 used there o. exercises.

The deflecting bar 5 also has, on each of the two side parts 5a and 5b, a supporting area 18 which, when the hinge 3 is fully open, is supported on the pin 17 of the first axis of rotation D1 in such a way that it exerts a force counteracting the lever force. Thereby, a mechanical stress of the hinges 3 is considerably reduced, so that they are able to carry a force exerted by the oven door 2 load of at least 300 N, in particular of at least 350 N, in particular of at least 400 N, in particular of at least 440 N. For a single hinge 3, halved values apply.

The deflecting bar 5 is further connected to a spring element 19 that exerts a restoring force on the deflecting bar 5. Thus, a counter force is generated against the weight force of the door acting on the hinge arm 7, whereby a resistance of the door against opening is prevented and a closing of the door against its weight force is supported.

4 shows a side view of a hinge 23 according to a second embodiment in its closed state. The hinge 23 differs from the hinge 3 in that it has a slightly differently shaped deflecting bracket 25 and a slightly differently shaped housing groove 26 has. The hinge 23 can be used instead of the hinge 3 and gives the same advantages. 5 shows a side view of the hinge 23 in its fully open state. To transition from its closed state to its fully open state, a user will pull on a door connected to the hinge arm 7 (not shown). As a result, the hinge arm 7 is rotated clockwise in the view shown. Starting from Fig.4 is drawn by this rotational movement of the hinge arm 7 on the second axis of rotation D2 of the deflection bracket 25 at the second axis of rotation D2 with the hinge arm 7 to the outside (to the right in the view shown). This is done against the spring force of the thereby compressing spring element 19, so that too fast opening of the door can be prevented. With the rotary movement of the hinge arm 7, the deflecting bar 25 also begins to move forward along the housing groove 26, at least at a certain opening angle.

When the hinge arm 7 approaches its full opening position, the rigid axle element 16 approaches the front end of the housing groove 26 and thus its stop. The support area 18 also approaches the first axis of rotation D1 or the corresponding pin 17.

Upon reaching the full open position shown in Figure 5, the deflecting bracket 25 comes into abutment with the housing groove 26 and is prevented there from further movement. At the same time the deflecting bracket 25 reaches with its support portion 18 in support or stop with the pin 17 of the first axis of rotation D1. So that the support area 18 does not damage the pin 17, it is designed as a support claw, which is formed at its contact area complementary to an axle element of the first axis of rotation, namely in this case concave with a spherical contour.

In the fully opened state, a lever or contact force is exerted on the first axis of rotation D1 by the weight force of the door acting on the hinge arm 7, which lever is directed obliquely inward perpendicular to a connecting axis between the two axes of rotation D1 and D2. At the same time, the deflecting bracket 25 presses over its supporting region 18 in an at least approximately opposite direction to the first axis of rotation D1. Consequently, the two forces cancel each other at least partially, so that a load of the pin 17 of the first axis of rotation D1 is considerably reduced. This in turn has an advantageous effect on a lifetime of the hinge 23. Also, so much greater loads and impulses can be endured by the hinge 23, eg heavier doors or faster opening doors.

On the underside of an associated hinge housing 24, a slot 20 is also shown, by means of which the hinges 23 can be suspended in a front plate 15. The hinge 23 further comprises a pivotable brake yoke 27, by means of which a width of the housing groove 26 can be reduced in order to brake a movement of the axle element 16 when the door is opened. Thus, an impact force when closing and / or a closed position of the door can be adjusted. To adjust a position of the brake yoke 27, an adjusting screw 28 is present. The brake bow 27 has here to limit its movement to a longitudinal hole 29.

The spring element 19 is connected via a ram 30 serving for force transmission, which is rotatably connected to the deflection bracket 25. Of course, the present invention is not limited to the embodiment shown.

Generally, "on", "an", etc. may be taken to mean a singular or a plurality, in particular in the sense of "at least one" or "one or more" etc., unless this is explicitly excluded, e.g. by the expression "exactly one", etc.

Also, a number may include exactly the specified number as well as a usual tolerance range, as long as this is not explicitly excluded. LIST OF REFERENCE NUMBERS

1 oven

2 oven door

3 hinge

4 hinge housing

4a housing cheek

4b housing cheek

5 deflector

5a side panel

5b side panel

6 housing groove

7 hinge arm

8 door leaf

9 feed opening

10 oven room

1 1 frame

12 Projecting part of the hinge housing

13 tab

14 screw

15 front panel

16 rigid axle

17 pen

18 support area

19 spring element

20 slot

23 hinge

25 deflector

26 housing groove

27 brake levers

28 adjusting screw

29 longitudinal hole

30 pestles

A screw axle First axis of rotation Second axis of rotation

Claims

Household appliance hinge (3; 23), comprising

- A hinge arm (7) for connection to a household appliance door (2) which is rotatably connected to a first axis of rotation (D1) with a hinge housing (4; 24), and

- One with the hinge arm (7) on a second axis of rotation (D2) rotatably connected Umlenkbügel (5; 25), which is at least partially housed in the hinge housing (4; 24) and there by means of an elongate guide (6; 26) slidably guided is

characterized in that

- The deflection (5, 25) is at full open hinge (3; 23) to stop with the guide (6; 26), so that the hinge arm (7) exerts a leverage on the first axis of rotation (D1), and

- The Umlenkbügel (5; 25) has at least one support region (18) which is supported at full open hinge (3; 23) on the first axis of rotation (D1) that he exerts thereon a lever force counteracting force.

Household appliance hinge (3; 23) according to claim 1, characterized in that the deflecting bracket (5; 25) at an opening movement of the hinge (3; 23) simultaneously in its guide (6; 26) and with its support region (18) in Stop arrives.

Household appliance hinge (3; 23) according to one of the preceding claims, characterized in that, when the hinge (3; 23) is fully open, the first axis of rotation (D1) is arranged in front of the second axis of rotation (D2) and the second axis of rotation (D2) front side in front of the elongated guide (6; 26) is arranged.

Household appliance hinge (3; 23) according to one of the preceding claims, characterized in that the at least one support region (17) is complementary to an axle element (17) of the first axis of rotation (D1). Household appliance hinge (3; 23) according to one of the preceding claims, characterized in that the deflecting bracket (5; 25) has a rigid axle element (16) in its guide housing (6; 26) in the hinge housing (4; in the elongated guide (6; 26) is displaceably movable.

Domestic appliance hinge (3; 23) according to one of the preceding claims, characterized in that

- The hinge arm (7) is formed at its device-side end portion for rotation about the first axis of rotation (D1) and about the second axis of rotation (D1),

- The first axis of rotation (D1) below the second axis of rotation (D2) is arranged and

- The elongate guide (6; 26) above the first axis of rotation (D1) is arranged.

Domestic appliance hinge (3; 23) according to one of the preceding claims, characterized in that the second axis of rotation (D2)

- At a fully open position of the hinge (3; 23) located in front of the first axis of rotation (D1) and

- is located at a closed position of the hinge (3, 23) behind the first axis of rotation (D1).

A household appliance hinge (3; 23) according to any one of the preceding claims, characterized in that the hinge (3; 23) is adapted to carry a load on the hinge arm (7) of at least 150N.

Household appliance (1), comprising

- A treatment chamber (10) having a front-side charging opening (9), and

a horizontally pivotable door (2) for closing the charging opening (9),

- Which door (2) is connected by hinges to the rest of the household appliance (1),

characterized in that - The hinges are household appliance hinge (3; 23) according to one of the preceding claims.

Domestic appliance (1) according to claim 9, characterized in that the household appliance (1) has an oven, the treatment chamber (10) is a furnace chamber and the door (2) is a baking oven door.