REFRIGERATOR

Abstract

A refrigerator has an appliance body on which at least two doors arranged one above the other are pivotably mounted. The doors are mounted via a double hinge which is fixed to the appliance body with a mounting plate which is connected via a plurality of movable joint levers to an upper hinge part connected to the upper door and to a lower hinge part connected to the lower door via a plurality of further movable joint levers. The upper door is further pivotably mounted on the appliance body via a support hinge which is fixed to the appliance body by a mounting element that is connected to a plurality of joint levers connected to a further hinge part connected to the upper door. The joint levers of the support hinge have a greater vertical extent in the vertical direction than the joint levers of the double hinge.

Claims

1: A refrigerator (1, 1′) with an appliance body (2, 2′), on which at least two doors (6, 7) arranged one above the other are pivotably mounted, which open or close an interior space (3, 4) of the appliance body (2, 2′), a) wherein the doors (6, 7) are connected to the appliance body (2, 2′) in a closed position via at least one seal (8), b) wherein the two doors (6, 7) form an upper door (6) and a lower door (7) and are pivotably mounted via a double hinge (20) which is fixed to the appliance body (2, 2′) with a mounting plate (21) which is connected via a plurality of movable joint levers (22, 23, 24, 25) to an upper hinge part (30) connected to the upper door (6) and via a plurality of further movable joint levers to a lower hinge part (40) connected to the lower door (7), c) and the upper door (6) is further pivotably mounted on the appliance body (2, 2′) via a support hinge (10) which is fixed to the appliance body (2, 2′) with a mounting element (11) which is connected to a further upper hinge part (12) connected to the upper door (6) with a plurality of joint levers (13, 14, 15, 16), wherein the joint levers (13, 14, 15, 16) of the support hinge (10) have a greater vertical extension than the joint levers (22, 23, 24, 25) of the double hinge (20).

2: The refrigerator according to claim 1, wherein the support hinge (10) absorbs more weight forces of the upper door (6) than a part of the double hinge (20) connected to the upper door (6).

3: The refrigerator according to claim 1, wherein the joint levers (22, 23, 24, 25) of the double hinge (20) and the joint levers (13, 14, 15, 16) of the support hinge (10) have the same axes of rotation and the same lever lengths.

4: The refrigerator according to claim 1 or 2, characterized in that claim 1, wherein the joint levers (22, 23, 24, 25) of the double hinge (20) and the joint levers (13, 14, 15, 16) of the support hinge (10) have unequal axes of rotation and unequal lever lengths.

5: The refrigerator according to claim 1, wherein the joint levers (22, 23, 24, 25) of the double hinge (20) are at least partially plate-shaped and at least outer joint levers (13, 16) of the support hinge (10) are formed as levers which are U-shaped in cross-section.

6: The refrigerator according to claim 1, wherein the support hinge (10) has a greater height in a vertical direction than a height of the double hinge (20).

7: The refrigerator according to claim 1, wherein the joint levers (22, 23, 24, 25) of the double hinge (20) are formed at least partially from at least two plates which lie one on top of another in certain areas.

8: The refrigerator according to claim 7, wherein the at least two plates form a cavity into which a further joint lever (22, 23, 24, 25) projects.

9: The refrigerator according to claim 1, wherein a support lever (13) pivotably connected to the mounting element (11) of the pivot levers (13, 14, 15, 16) of the support hinge (10) is at least twice as thick in a vertical direction as a lever (22) of the double hinge (20) that is pivotably connected to the mounting plate (21).

10: The refrigerator according to claim 1, wherein a plate-shaped cover (17, 26) for covering gaps between the joint levers (13, 14, 15, 16, 22, 23, 24, 25) is provided on an upper side and a lower side of the support hinge (10) and/or the double hinge (20).

11: The refrigerator according to claim 1, wherein the joint levers (22, 23, 24, 25) on the double hinge (20) form an articulated lever mechanism with seven joints.

12: The refrigerator according to claim 1, wherein the lower door (7) is pivotably mounted on the appliance body (2, 2′) via the double hinge (20) and a further support hinge (10).

13: The refrigerator according to claim 1, wherein at least one of the joint levers of the double hinge (20) has a recess into which a spring (50) is inserted, by means of which a hinge part (30, 40) can be pretensioned in a closing direction.

14: The refrigerator according to claim 13, wherein the spring (50) acts on a pivotable lever (52) or a pusher (61) which is movable along a curve guide (54, 62).

15: The refrigerator according to claim 1, wherein an axis holder (29) for common axes (A3, A1) is arranged on the mounting element (11) between the joint levers (22, 24) for the upper door (6) and the joint levers (22, 24) for the lower door (7).

16: The refrigerator according to claim 15, wherein the joint levers (22, 24) for the upper door (6) and the joint levers (22, 24) for the lower door (7) are held on the mounting element (11) and the axis holder (29) via a common axis bolt.

17: The refrigerator according to claim 1, wherein the upper door (6) and the lower door (7) are braked by a damping device during a closing process, the damping device comprising a linear damper with a piston or a rotary damper, the damper being filled with a fluid.

18: The refrigerator according to claim 1, wherein the appliance body (2, 2′) is integrated in a piece of furniture (70) with side walls (71), the side walls (71) of the piece of furniture (70) projecting beyond the appliance body (2, 2′) and covering at least part of the lateral end faces (9) of the doors (6, 7) from the side.

19: The refrigerator according to claim 1, wherein at least one door (6, 7) on a side facing the interior space (3, 4) has, in addition to insulation, compartments and/or holding means for storing objects and the support hinge (10) allows an opening angle of at least 115° so that the interior space (3, 4) is at least almost completely freely accessible.

Description

[0023] The invention is explained in more detail below by means of several embodiments with reference to the accompanying drawings. It is shown in:

[0024] FIGS. 1A and 1B Two views of a refrigerator according to the invention;

[0025] FIGS. 2A and 2B Two views of a modified refrigerator according to the invention;

[0026] FIGS. 3A to 3C Several views of the refrigerator of FIGS. 1 and 2 in the area of the front side of the doors;

[0027] FIGS. 4A to 4C Several views of a support hinge of the refrigerator;

[0028] FIG. 5 An exploded view of the support hinge of FIG. 4;

[0029] FIGS. 6A to 6C Multiple views of a double hinge of the refrigerator in the closed position;

[0030] FIGS. 7A and 7B Two views of the double hinge in different opening positions;

[0031] FIGS. 8A and 8B Two views of the double hinge with only one joint mechanism in one opening position;

[0032] FIG. 9 An exploded view of part of the double hinge of FIG. 6;

[0033] FIG. 10A perspective view of a modified double hinge;

[0034] FIG. 11 An exploded view of part of the double hinge of FIG. 10;

[0035] FIGS. 12A to 12C Several views of the double hinge of FIG. 10 in different positions, and

[0036] FIGS. 13A to 13C Several views of a further double hinge in different positions, and

[0037] FIGS. 14A and 14B Two views of a refrigerator integrated into a piece of furniture.

[0038] A refrigerator 1 comprises an appliance body 2 in which an upper interior space 3 and a lower interior space 4 are provided, which are separated from each other by a floor 5. The upper interior space 3 can be closed via an upper door 6, while the lower interior space 4 can be closed via a lower door 7. The doors 6 and 7 can comprise compartments and holding means for storing objects in addition to insulation on the side facing the interior spaces 3 and 4. A seal 8 is also provided on each door 6 and 7 which, in the closed position, provides a seal against the interior spaces 3 or 4.

[0039] The upper door 6 is pivotably held on the appliance body 2 via an upper support hinge 10 and an upper joint mechanism on a double hinge 20. The lower door 7 is pivotably held on the upper side by a lower joint mechanism on the double hinge 20 and on the lower side by a further support hinge 10.

[0040] FIGS. 2A and 2B show a modified refrigerator 1′ which comprises an appliance body 2′ on which two upper doors 6 and two lower doors 7 are pivotably mounted. The two upper doors 6 close an upper interior space 3′ in the appliance body 2′, and the two lower doors 7 close a lower interior space 4′. The interior spaces 3′ and 4′ are divided from each other by a floor 5′. The doors 6 are each pivotably mounted at the top via a support hinge 10 and at the bottom via a double hinge 20. The lower doors 7 are pivotably mounted at the top via the double hinge 20 and at the bottom via a further support hinge 10.

[0041] The refrigerators 1 or 1′ can be set up as free-standing appliances, but can also be installed within a cabinet unit. In order to avoid a collision with side walls of a cabinet unit, the support hinges 10 and the double hinge 20 are designed in such a way that a hinge part on the doors 6 and 7 is removed from the appliance body 2 or 2′ during a pivoting movement.

[0042] FIGS. 3A to 3C show the area of the support hinges 10 and the double hinge in detail. Each support hinge 10 is fixed to the appliance body 2 or 2′ by a mounting element 11. Via an joint mechanism, the mounting element 11 is connected to a hinge part 12 on which the door 6 is held.

[0043] The double hinge 20 comprises a mounting plate 21 which is fixed to the appliance body 2 or 2′. The mounting plate 21 does not have to be formed plate-shaped, but can also have a different geometry. The mounting plate 21 is connected to an upper hinge part 30 via a joint mechanism and to a lower hinge part 40 via a further joint mechanism. The upper hinge part 30 is fixed to the door 6, while the lower hinge part 40 is fixed to the door 7.

[0044] The double hinge 20 has a height h in the vertical direction that is smaller than the height H of a support hinge 10. The double hinge 20 thus has a very compact design and ensures small gaps between the doors 6 and 7 as well as effective insulation.

[0045] FIGS. 4A to 4C show one of the support hinges 10 in various positions. In the folded closed position shown in FIG. 4A, the support hinge 10 is essentially box-shaped, with the hinge part 12 and the mounting element 11 arranged next to each other. When the support hinge 10 is moved in an opening direction, the hinge part 12 pivots in the opening direction via a joint mechanism, as shown in FIG. 4B. The mounting element 11 is connected via two joint levers 13 and to two further joint levers 14 and 16, which in turn are articulated to the hinge part 12. In order to prevent engagement in the gaps between the joint levers 13, 14, 15 and 16, a cover 17 is provided on the upper side and the lower side respectively, which covers gaps between the joint levers 13 to 16. The support hinge 10 is designed as a seven-joint hinge and has four joint levers 13 to 16, although other hinges, for example four-joint hinges, can also be used.

[0046] FIG. 5 shows an exploded view of the support hinge. The joint levers 13, 14, 15 and 16 are manufactured as bent sheet steel parts and have a U-shaped cross-section. This achieves a high rigidity of the joint mechanism, as the two legs are connected to each other via an integrally formed base at each joint lever 13, 14, 15 and 16.

[0047] The first joint lever 13 is mounted on the mounting element 11 via an axis A1 and has two further axes A2 and A5. The third joint lever 15 is hingedly mounted on the mounting element 11 on the axis A3, on the protruding end of which an axis A4 is formed which corresponds to the axis A4 on the second joint lever 14. The second joint lever 14 is connected to the first joint lever 13 by axis A2, and on the opposite side to the hinge part 12 via axis A6. The fourth joint lever 16 is connected to the first joint lever 13 by axis A5 and to the hinge part 12 via axis A7. The hinge part 12 comprises a bracket and a bearing element which are connected to each other via axes A6 and A7. This facilitates the assembly. Optionally, the hinge part 12 can be formed in one piece, for example as a U-shaped bent component.

[0048] The axes A1 to A7 can be formed by pins which are inserted into the respective openings on the joint levers 13 to 16.

[0049] The two covers 17 are rotatably held on the first joint lever 13 by an axis A17. Each cover 17 comprises a slot 19 which surrounds an axis A19 provided on the hinge part 12. This allows the axis A19 to be moved along the slot 19.

[0050] The support hinge 10 further comprises a height adjustment means, wherein the mounting element 11 is not directly fixed to the appliance body 2 or 2′, but via a height adjustment element 18. This allows the mounting element 11, and thus the support hinge 10, to be adjusted in height relative to the height adjustment element 18 in order to align with the appliance body 2 or 2′.

[0051] FIGS. 6A to 6C show the double hinge 20 in a closed position. The double hinge 20 is also box-shaped in the closed position. The two hinge parts 30 and are arranged one above the other and next to the mounting plate 21. The mounting plate 21 is formed as a U-shaped bent sheet metal part. The hinge part 30 is connected to the mounting plate 21 via an upper joint mechanism and the hinge part 40 via a lower joint mechanism.

[0052] In FIGS. 7A and 7B, the double hinge 20 is shown in different opening positions, in which both hinge parts 30 and 40 are shown lying on top of each other and in FIG. 7A in a maximum opening position. The hinge parts 30 and 40 are arranged at a distance from the mounting plate 21, for example at a distance between 10 mm to 80 mm, in particular 20 mm to 50 mm.

[0053] In FIG. 8A, the lower hinge part 40 is in a closed position while the upper hinge part 30 is in the maximum open position. In FIG. 8B, on the other hand, the upper hinge part 30 is arranged in a closed position, while the lower hinge part 40 is arranged pivoted in a maximum open position. The two hinge parts 30 and 40 can thus each be moved independently of each other via an joint mechanism and are held on the stationary mounting plate 21.

[0054] FIG. 9 shows the upper joint mechanism of the upper hinge part 30 of the double hinge 20, wherein the upper joint mechanism and the lower joint mechanism of the hinge part 40 are substantially identical in construction, for example mirror-inverted to a central horizontal plane.

[0055] The mounting plate 21 is U-shaped and comprises a plate-shaped bottom which can be fixed to the appliance body 2 or 2′. The bottom of the mounting plate 21 can also be fixed to the floor 5 or 5′ for dividing the interior spaces 3 and 4.

[0056] The joint mechanism comprises four joint levers 22, 23, 24 and 25, by means of which the upper hinge part 30 is pivotably mounted. The first joint lever 22 is hingedly connected to the mounting plate 21 via an axis A1 and comprises two further axes A2 and A5. The third joint lever 24 is hingedly connected to the mounting plate 21 via an axis A3 and is hingedly connected to the second joint lever 23 at the opposite end via an axis A4. The second joint lever 23 is hingedly connected to the first joint lever 22 via axis A2 and is hingedly connected to the hinge part 30 via an axis A6. The axis A4 is located between the axes A2 and A6. The fourth joint lever 25 is hingedly connected to the first joint lever 22 via axis A5 and at the opposite end is hingedly connected to the hinge part 30 via an axis A7. In the assembled position of the double hinge 20, the axes A1 to A7 are mounted in the same way as the axes A1 to A7 on the support hinge 10, only vertically offset.

[0057] The double hinge 20 comprises covers 26 on the joint mechanism with the joint levers 22, 23, 24 and 25 on the upper side and the lower side, each cover 26 being hingedly fixed to an axis A26 on the first joint lever 22. The cover 26 comprises a slot 28 into which an axis A28 on the hinge part is inserted, thus guiding the cover 26 during a pivoting movement of the double hinge 20.

[0058] The double hinge 20 further comprises a height adjustment means, wherein the mounting plate 21 is not directly fixed to the appliance body 2 or 2′, but via a height adjustment element 27. This allows the mounting plate 21 to be adjusted in height relative to the height adjustment element 27 to align with the appliance body 2 or 2′.

[0059] The joint levers 22, 23, 24 and 25 are relatively flat compared to the U-shaped joint levers 13, 14, 15 and 16 of the support hinge 10. Preferably, the joint levers 22, 23, 24 and 25 are formed from two plates, in particular a steel plate, which rest on each other at least in some areas. For example, the joint lever 22 comprises two plates which lie on top of each other in areas and are spaced apart in other areas. The spaced areas can be arranged parallel to each other. This increases the bending stiffness despite the small thickness of the joint lever 22. The joint lever 23 is also formed of two plates which rest on each other in some areas and on which a step is formed so that the plates are spaced apart in some areas. The joint levers 24 and 25 comprise two spaced plates, between which a spacer can optionally be provided. A height of the joint levers 22, 23, 24 and 25 in the vertical direction is preferably in a range smaller than 10 mm, in particular smaller than 8 mm. The height of the joint levers 22, 23, 24 and 25 can, for example, be between 2 mm and 7 mm.

[0060] An axis holder 29 is arranged on the mounting element 21 between the upper joint levers for the upper door and the joint hinge levers for the lower door. The axis holder 29 is plate-shaped and extends parallel to the two outer walls of the mounting element 21. Openings are provided in the axis holder 29 for the axes A1 and A3 to pass through, at which the first and third joint levers 22 and 24 can be pivoted.

[0061] FIG. 10 shows a modified double hinge 20 which comprises a spring 50 on each joint mechanism to bias one of the doors 6 or 7 in the closing direction in a closing area. Each spring 50 can be effective, for example, in an opening area of the door 6 or 7 between the closed position and a pivoting of the hinge part 30 or 40 up to, for example, 30°, in order to bias the door 6 or 7 into the closed position only in this closing area.

[0062] FIG. 11 shows the double hinge of FIG. 10 with an joint mechanism for the hinge part 30. A guide lever 53 is fixed to the first joint lever 22 and forms a curve guide 54 at one end. A lever 52, which is rotatably mounted about an axis A52 on a modified fourth joint lever 25′, rests against the curve guide 54. A tension lever 51 is provided on the fourth joint lever 25′, on which a spring 50 is received in a recess. In the assembled position, the spring 50 also lies in a recess of the fourth joint lever 25′. The tensioning lever 51 is rotatably mounted about the axis A7 of the fourth joint lever 25′, whereby the spring 50 can be compressed via the lever 52.

[0063] FIG. 12A shows the double hinge with the spring 50 in the maximum opening position of the hinge part 30. The spring 50 is in the tensioned compressed position and the lever 52 pushes the spring 50 into the tension lever 51. A pin or other guide element may be provided in the tension lever 51 to prevent the spring 50 from moving. When the double hinge 30 is moved in the closing direction, as shown in FIG. 12B, the spring 50 remains in the cocked position and the lever 52 does not initially pivot relative to the cocking lever 51. In this pivoting range, the spring 50 is inoperative except for frictional forces, and the curve guide 54 pushes the lever 52 towards the spring 50, not assisting or braking the pivoting movement due to the constant length of the spring 50.

[0064] When the double hinge with the hinge part 30 moves from the position shown in FIG. 12B to the closed position shown in FIG. 12C, an area of the curve guide 54 comes into contact with the lever 52, which allows the lever 52 to pivot so that the spring 50 can relax and pivot the lever 52. In the closed position, the spring 50, which is in the form of a compression spring, has a greater length than in the central open position shown in FIG. 12B, so that the closing action of the double hinge is assisted in the closing area.

[0065] In FIGS. 10 to 12, the spring 50 is coupled to the pivoted lever 52. FIGS. 13A to 13C show a modified embodiment of a double hinge 20 in which a spring 50 is inserted into a recess of a joint lever 60 and acts on a movable slider 61. The spring 50 is again a compression spring and presses the pusher 61 against a cam 62 formed on the hinge part 30 or a component fixed to the hinge part 30.

[0066] In the closed position of FIG. 13A, the pusher 61 is spaced from the joint lever 60, and when opening, the pusher 61 is moved towards the joint lever 60 by the cam 62 so that the spring 50 is compressed against the spring force. In this compressed and tensioned position, the spring 50 can be moved from the middle opening position according to FIG. 13B to a maximum opening position according to FIG. 13C without changing the length of the spring 50. The pusher 61 is moved along the curve guide 62.

[0067] In an alternative embodiment, the curve guides 54 and 62 can also be formed differently so that the hinge part 30, 40 is pretensioned over the entire travel in the closing direction. It is also possible that the curve guides automatically move the hinge part 30, 40 into an open position from a predetermined opening angle.

[0068] Only during a closing movement can the spring 50 in the opening area between FIGS. 13B and 13A relax again and thus bias the door 6 or 7 into the closed position.

[0069] In addition to the spring element, a damper can also be provided on the support hinge 10 and/or the double hinge 20 to slow down a closing movement in order to avoid loud impact noises.

[0070] FIGS. 14A and 14B show a refrigerator 1, 1′ in a closed and open door position, in which the appliance body 2, 2′ is integrated in a piece of furniture 70.

[0071] The furniture has two side walls 71 which project beyond the appliance body 2, 2′ at the front, so that the front of the doors 6 and 7 are flush with the narrow side of the side walls 71 in the closed position. In the closed position, the side face 9 of the doors 6 and 7 is thus concealed from a side view by the side walls 71. In the fully open door position, the narrow side of the side panel 71 and the lateral end face 9 of the doors 6, 7 are at an angle to each other. In FIGS. 14A and 14B, the refrigerator 1, 1′ has two opposing doors 6 and 7. However, the refrigerator 1, 1′ can also have only one door 6 and one door 7.

[0072] Due to the arrangement with a support hinge 10 and a double hinge 20, high door weights can be realised so that the doors 6 and 7 can also have different or combined additional functions such as an ice cube area, a beverage flap, interior organisation or a touch screen.

[0073] In addition to a damping device for the closing process of the door 6,7, an electronic opening aid can also be provided on the refrigerator 1, 1′ to assist the operator in opening the door 6,7 or to open the door 6,7 at least partially.

LIST OF REFERENCE SIGNS

[0074] 1, 1′ Refrigerator [0075] 2, 2′ Appliance body [0076] 3, 3′ Interior space [0077] 4, 4′ Interior space [0078] 5, 5′ Floor [0079] 6 Door [0080] 7 Door [0081] 8 Seal [0082] 9 Front side [0083] 10 Support hinge [0084] 11 Mounting element [0085] 12 Hinge part [0086] 13 Joint lever [0087] 14 Joint lever [0088] 15 Joint lever [0089] 16 Joint lever [0090] 17 Cover [0091] 18 Height adjustment element [0092] 19 Slot [0093] 20 Double hinge [0094] 21 Mounting plate [0095] 22 Joint lever [0096] 23 Joint lever [0097] 24 Joint lever [0098] 25, 25′ Joint lever [0099] 26 Covering [0100] 27 Height adjustment element [0101] 28 Slot [0102] 29 Axis holder [0103] 30 Hinge part [0104] 40 Hinge part [0105] 50 Spring [0106] 51 Tensioning lever [0107] 52 Lever [0108] 53 Guide lever [0109] 54 Curve guide [0110] 60 Joint lever [0111] 61 Pusher [0112] 62 Curve guide [0113] 70 Furniture [0114] 71 Sidewall [0115] H Height [0116] H Height [0117] A1 Axis [0118] A2 Axis [0119] A3 Axis [0120] A4 Axis [0121] A5 Axis [0122] A6 Axis [0123] A7 Axis [0124] A17 Axis [0125] A19 Axis [0126] A26 Axis [0127] A28 Axis [0128] A52 Axis