DE102015102387A1 - Sliding tilt mechanism of a storage of a household appliance and household appliance - Google Patents

Abstract

A sliding pivot mechanism of a tray (11) of a household appliance for removing and lifting the tray (11) from a body (2) of the household appliance has at least two mutually spaced apart pivot arms (3, 4), which with a first end to a Side wall (21, 22) of the body are parallel to the plane of the side walls (21, 22) pivotally fixed, wherein at respective second ends of the pivot arms (3, 4) has a guide rail (5) parallel to the plane of the side wall (21, 22) is pivotally fixed, that the guide rail (5) from a lower position within the body (2) in a raised, upper position at least partially outside the body (2) is pivotable, at least one in the guide rail (5) sliding track rail (13) to which the tray (11) is fixed, wherein to support the raising and lowering of a on the side wall (21, 22) of the body or on the guide rail (5) fixed and with a de R arm (3, 4) or the body (2) connected raising and lowering aid for supporting the pivoting movement of the pivot arms (3, 4) is provided, wherein the lifting and lowering aid has a force accumulator (7) and a lever element (8) in that the lever element (8) has a control contour (82) with a varying radius of curvature which is in contact with the energy accumulator (7) at at least one point. Furthermore, a household appliance with a sliding pivot mechanism (1) is described.

Description

The present invention relates to a sliding pivot mechanism of a tray of a household appliance for removing and lifting the tray from a body of the household appliance according to the preamble of claim 1.

The invention further relates to a household appliance.

Such sliding swivel mechanisms are installed in particular in dishwashers, refrigerators, freezers or cooking appliances to extract a lower crockery basket, container or food support from the dishwasher, the refrigerator or freezer compartment of the refrigerator or freezer or the cooking of the cooking appliance and upwards in To raise a position in which a comfortable for a user loading and unloading of the dish rack or food support is possible.

A generic sliding pivot mechanism is for example from the WO 2014/033092 A1 known.

Such a sliding pivot mechanism has proven itself in practice.

The object of the present invention is to develop the sliding swivel mechanism or the household appliance to the effect that the power assistance during the raising and lowering movement is further improved.

This object is achieved by a sliding pivot mechanism of a filing of a household appliance with the features of claim 1 and by a household appliance with the features of claim 9.

The sliding pivot mechanism according to the invention has at least two mutually spaced apart pivot arms, which are fixed to a first end in a side wall of the body in parallel to the plane of the side walls pivotally. At respective second ends of the pivot arms, a guide rail is pivotally mounted parallel to the plane of the side wall, which is pivotable by means of the pivot arms from a lower position within the body of the household appliance in a raised, upper position at least partially outside of the body. At a sliding rail in the guide rail, the tray is attached.

Furthermore, in order to support the raising and lowering movement, a lifting and lowering aid for supporting the pivoting movement of the pivoting arms is provided on a side wall of the body or on the guide rail and connected to one of the pivot arms or the body.

This lifting and lowering aid has an energy storage and a lever element. The lever element has a control contour with a varying radius of curvature, which is in contact with the energy accumulator at at least one point.

The lever element makes it possible for the force accumulator to exert a torque adapted to the current requirements on one of the pivot arms at any time during the raising or lowering movement. Depending on the Verschwenkungswinkel the energy storage is located at a point of the control contour, the distance from the pivot point of the pivot arm allows optimal application of force to the swing arm. Thus, the effect of the energy storage over the length of the power arm can be optimized. The varying radius of curvature of the control contour comprises both a "true" curvature and a straight path with an infinitely large radius of curvature. In other words, this realizes an adaptation of the power assistance to the course of the pivoting mechanism or to the needs of the user.

Advantageous embodiments of the invention are the subject of the dependent claims.

According to an advantageous embodiment of the invention, the control contour is shaped so that the distance between the contact point of the energy accumulator on the control contour and the axis of rotation of one of the pivot arms with decreasing force application of the energy storage on the one of the pivot arms or the guide rail first reduced and then increased.

This makes it possible that the energy storage supports the lowering in the lower position as well as the lifting of the tray in the upper position, in which the decreasing force of the energy storage is compensated by a larger lever arm, which is in particular shortly before reaching the upper position of the tray positively affects the handling of the sliding swivel mechanism. The known from the prior art force support decreases due to design in this area shortly before reaching the upper end position and thus forces the user to bring the filing by own effort in this upper end position.

In this case, the course of the distance between the contact point of the energy accumulator on the control contour and the axis of rotation of the one of the pivot arms with decreasing power of the Force accumulator on the one of the pivot arms or the guide rail are selected by the special design of the control contour so that the lifting and lowering aid in the pivotal movement of the pivot arms passes through a dead center, wherein the distance and thus the acting torque is reduced to zero.

The torque reversal near the lower end position allows support of the lowering movement of the tray to its lower position.

The energy storage device is designed according to an advantageous embodiment variant as a tension spring.

Particularly preferably, the force accumulator formed as a tension spring is connected via a cable to the lever element, wherein at least a portion of the cable rests against the control contour.

Depending on the swivel position of the lever element, this cable rests on different regions of the control contour, which leads to a shortening or lengthening of the spring travel with respect to the pivot point of one of the swivel arms. The control contour is correspondingly shaped such that a loss of bias of the energy storage is compensated by the increasing in the course of the lifting movement of the pivot arms travel.

The cable is attached according to a preferred embodiment of a lever element on the one hand and an end of the force accumulator close to the lever element on the other hand, in particular mounted.

According to a further alternative embodiment variant, instead of the cable, a section of the force accumulator designed as a tension spring itself bears against the control contour of the lever element. For this purpose, the control contour of the lever element must be designed to match the circumferential dimensions of the tension spring.

The lever element itself is releasably secured to the one of the pivot arms according to an advantageous embodiment variant, which ensures an easy-to-carry out assembly of such a lever element. It is also conceivable according to an alternative embodiment, the lever element irreversibly attached to the one of the pivot arms.

Hereinafter, a preferred embodiment will be explained in more detail with reference to the accompanying drawings. Show it:

1 a perspective view of a portion of a body of a dishwashing apparatus with upper and lower tray, the lower tray is equipped with a variant of a sliding tilt mechanism according to the invention,

2 and 3 Side views of a variant of an inventive sliding pivot mechanism in fully lowered position and a detailed representation of the III in 2 marked area,

4 and 5 a side view of the sliding pivot mechanism 2 after the displacement of the track from the guide rail before lifting the sliding swivel mechanism and a detailed representation of the V in 4 designated area,

6 and 7 Side views of the sliding pivot mechanism in a partially raised position of the tray, wherein 7 a detail of the with VII in 6 marked section,

8th and 9 Side views of the sliding pivot mechanism in the upper, fully raised position of the tray, wherein 9 a detail of the with IX in 8th Represents marked section and

10 and 11 Top views of two different embodiments of a lever element of the sliding pivot mechanism.

In the following description of the figures, terms such as top, bottom, left, right, front, back, etc. refer exclusively to the exemplary representation and position of the sliding swivel mechanism, tray, swivel arm, guide rail, energy accumulator, lever element and the like chosen in the respective figures. These terms are not intended to be limiting, that is to say, by different working positions or the mirror-symmetrical design or the like, these references may change.

In the 1 to 9 is with the reference numeral 1 Overall, a variant of a sliding pivot mechanism according to the invention called.

The sliding swivel mechanism 1 has a sidewall bracket 6 for fastening the sliding swivel mechanism 1 on an inside or side inner wall 21 . 22 a household appliance such as a dishwasher or a cooking appliance on.

The side wall bracket 6 preferably has recesses 62 on, on bolts or hooks (not shown) on the side wall 21 . 22 put on the side wall bracket 6 on the inside or side inner wall 21 . 22 of the household appliance.

On this side wall bracket 6 are at least two mutually parallel spaced pivot arms 3 . 4 with a first end on the sidewall bracket 6 parallel to the plane of the side wall 22 a body 2 of the household appliance. It is also conceivable, the swivel arms 3 . 4 directly on such a side wall 21 . 22 of the body 2 set.

The connection of the side wall bracket 6 with the swivel arms 3 . 4 takes place preferably via respective pivot joints 31 . 41 , At the other end of the swivel arms 3 . 4 is a guide rail on more pivots 5 fastened, in which a running rail 13 slidably arranged.

At this track 13 is a first filing 11 attached to the household appliance. The household appliance has in each case two such sliding pivoting mechanisms 1 on, on opposite side walls 21 . 22 the body of the household appliance are attached and thus the filing 11 on both sides over the track 13 and the guide rail 5 with the swivel arms 3 . 4 is connected and so from a lower position within the body 2 can be pulled out horizontally first and then in a raised, upper position at least partially outside of the carcass 2 is pivotable upwards.

As in 2 shown, the sliding pivot mechanism has a on the guide rail 5 and on one of the swivel arms 3 . 4 arranged locking mechanism for locking the tray 11 in several positions.

This locking mechanism preferably has one on one of the pivot arms 3 . 4 swiveling and resilient bridge 9 with one in the direction of the guide rail 5 protruding bolt 91 on, along one of the guide rail 5 fastened guide element 10 with several locking points is feasible.

Details of this locking mechanism and its operation and the suspension of the pivot arms 3 . 4 are in the aforementioned WO 2014/033092 A1 described in more detail, the content of which is hereby incorporated into this application for explaining many details of the sliding pivot mechanism.

To support the raising and lowering movement, such as in 2 shown, a lifting and / or lowering aid for supporting the pivotal movement of the pivot arms 3 . 4 intended.

This lifting and lowering aid has a power storage 7 and one on the one of the pivot arms 3 . 4 releasably or permanently attached lever element 8th on. The lever element 8th itself has a control contour 82 with varying radius of curvature, with the energy storage 7 is in contact with at least one point. The control contour 82 causes an adjustment of a distance between one on the lever element 8th acting force input through the energy storage 7 and the rotational axis of a rotary joint 31 . 41 one of the swivel arms 3 . 4 ,

In the 10 and 11 are two exemplary embodiments of such a lever element 8th . 8th' shown. The lever element 8th . 8th' essentially has a base plate 83 . 83 ' on, with openings 84 . 84 ' is provided, over which the lever element 8th preferably releasably attached to the one of the pivot arms 3 . 4 is fastened. Conceivable is an attachment via screws or a design of the openings 84 . 84 ' as detent openings in the corresponding locking cams on one of the pivot arms 3 . 4 be latched.

It is also conceivable a non-releasable fixation of the lever element 8th . 8th' on the one of the swivel arms 3 . 4 or the side wall 21 . 22 , for example by welding, riveting.

It is also conceivable, the lever element 8th . 8th' integral with one of the pivot arms 3 . 4 train.

At this base plate 83 . 83 ' is a control plate 81 formed perpendicular to the plane of the base plate 83 or the side wall 21 . 22 of the body 2 from the base plate 83 . 83 ' protrudes. The front edge of this control surface 81 . 81 ' forms a control contour 82 . 82 ' that with a portion of the energy storage 7 comes into contact.

As in the 10 and 11 As shown, the radius of curvature of the control contour varies 82 . 82 ' between rectilinear sections such as the in 10 with the reference number 822 marked area (with infinite radius of curvature) and curved areas such as in 10 with the reference number 821 marked area. In 11 is a control contour 82 ' shown, which is formed in a straight line in a lower portion in the drawing and is curved from there in a clockwise direction in an angular range of about 180 ° approximately egg-shaped.

As in the 2 to 9 shown, includes the energy storage 7 preferably a tension spring. This tension spring has a spring body 71 up with one The End 73 on a bolt 63 the side wall bracket 6 fixed, in particular is mounted.

Alternatively, the energy storage 7 also on the guide rail 5 and the lever element 8th . 8th' directly or indirectly on the body 2 be set.

On the other end 72 of the spring body 71 is a rope 74 set that with the lever element 8th connected is. A piece of this rope 74 lies on the control contour 82 of the lever element 8th at. The rope 74 is preferably on a cable holder 75 for example, a bolt in the other end 72 of the spring body 71 is fixed.

The lever element 8th is here on the first swivel arm 3 fixed in place, leaving the lever element 8th during a pivoting movement of the swivel arm 3 is pivoted with. That on the swivel arm 3 through the energy storage 7 applied torque is dependent on the distance of the rope 74 from the hinge 31 of the swivel arm 3 to which the lever element 8th is attached.

This distance of the rope 74 from the hinge 31 of the swivel arm 3 is characterized by the shape of the control contour 82 of the lever element 8th certainly. The control contour 82 is preferably shaped so that the distance between the contact point of the energy storage 7 at the control contour 82 and the axis of rotation of one of the pivot arms 3 . 4 with decreasing power of the energy storage 7 on one of the swivel arms 3 . 4 or the guide rail 5 first reduced and then enlarged.

As in the 2 to 5 can be seen acts in the position of the pivot arms 3 . 4 in the lower position only a small torque on the swing arm 3 because the rope 74 here from the control contour 82 at one area 821 which is shaped so that the rope is very close to the hinge 31 of the swivel arm 3 runs. That on the swivel arm 3 acting torque holds the swing arm 3 and thus the filing 11 while in the lower position.

During the subsequent lifting process, shown in the 6 and 7 , the spring force of the energy storage device 7 over the rope 74 such on the lever element 8th and thus on the swivel arm 3 transmit that the distance of the rope 74 from the hinge 31 of the swivel arm 3 opposite to the starting position, as in the 2 to 5 is shown, initially reduced to zero, so that the swivel arm 3 passes through a dead center, where no torque acts on this. Until reaching the dead center must be worked accordingly against the energy storage.

After passing through the dead center, the distance of the rope increases 74 from the hinge 31 of the swivel arm 3 , This increase in distance counteracts a decreasing force of the tension spring, which is increasingly relaxed as the lifting operation progresses.

Also in the 8th and 9 shown maximum upwardly pivoted positions of the pivot arms 3 . 4 in which the rope 74 now at one area 822 the control contour 82 is present, is the control contour 82 designed so that the rope 74 still at a greater distance from the swivel joint 31 of the swivel arm 3 runs and thus a decrease in the spring force of the energy storage 7 by a further increased distance of the force application of the rotary joint 31 of the swivel arm 3 is compensated.

The control contour 82 on the lever element 8th and with it the rope 74 of the energy store 7 are designed so the interior of the household appliance facing raised, that a striking the swing arm 3 at an end stop 61 on the side wall bracket 6 is not obstructed and thereby the filing 11 in its upper position at least partially outside the body 2 of the household appliance due to the end stop 61 the side wall bracket 6 can not be pivoted further up.

The tray is raised using the lifting and lowering aid 11 held in its upper position.

In addition to the in the 2 to 9 shown embodiment of the energy storage 7 with a rope 74 as an extension piece, with the lever element 8th interacts, it is alternatively also conceivable, a portion of the tension spring directly to the control contour 82 of the lever element 8th to apply.

The important thing is the control contour 82 to form so that, especially in the swivel range in the upper position of the tray 11 a decrease in the spring force of the compression or tension spring by the distance of the force application point to the rotary joint 31 of the swivel arm 3 is compensated.

In the household appliance such as a dishwasher or a cooking appliance is usually at least one other shelf 12 slidably mounted via a sliding mechanism in the interior, wherein in accordance with the embodiment 1 bottom shelf connected to the sliding-pivot mechanism 11 in the raised state approximately horizontally in front of the other upper shelf 12 is positioned.

LIST OF REFERENCE NUMBERS

1

Sliding swivel mechanism

2

corpus

21

Side wall

22

Side wall

3

swivel arm

31

swivel

4

swivel arm

41

swivel

5

guide rail

6

Side wall bracket

61

end stop

62

recess

63

bolt

7

power storage

71

spring body

72

The End

73

The End

74

rope

8, 8 '

lever member

81, 81 '

control plate

82, 82 '

control contour

821

Area

822

Area

83, 83 '

baseplate

84, 84 '

opening

9

web

91

bolt

10

guide element

11

filing

12

filing

13

runner

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

• WO 2014/033092 A1 [0004, 0039]

Claims (9)

Sliding swivel mechanism ( 1 ) a clipboard ( 11 ) of a household appliance for extracting and lifting the shelf ( 11 ) from a carcass ( 2 ) of the household appliance, comprising - at least two mutually spaced apart pivot arms ( 3 . 4 ) with a first end on a side wall ( 21 . 22 ) of the body parallel to the plane of the side walls ( 21 . 22 ) are pivotally fixed, - wherein at respective second ends of the pivot arms ( 3 . 4 ) a guide rail ( 5 ) so parallel to the plane of the side wall ( 21 . 22 ) is pivotally fixed, that the guide rail ( 5 ) from a lower position within the body ( 2 ) in a raised, upper position at least partially outside the body ( 2 ) is pivotable, - at least one in the guide rail ( 5 ) sliding track ( 13 ), where the filing ( 11 ) is attached, - wherein to support the raising and lowering movement on the side wall ( 21 . 22 ) of the body or on the guide rail ( 5 ) and with one of the swivel arms ( 3 . 4 ) or the body ( 2 ) associated lifting and lowering aid for supporting the pivoting movement of the pivot arms ( 3 . 4 ), characterized in that - the raising and lowering aid is a force accumulator ( 7 ) and a lever element ( 8th ), wherein the lever element ( 8th ) a control contour ( 82 ) having a varying radius of curvature associated with the energy storage ( 7 ) is in contact with at least one point. Sliding panning mechanism according to claim 1, characterized in that the control contour ( 82 ) is shaped such that the distance between the contact point of the energy storage ( 7 ) on the control contour ( 82 ) and the rotational axis of a rotary joint ( 31 . 41 ) of one of the swivel arms ( 3 . 4 ) with decreasing force application of the energy accumulator on the one of the pivot arms ( 3 . 4 ) or the guide rail ( 5 ) first reduced and then enlarged. Sliding pivot mechanism according to claim 2, characterized in that the control contour ( 82 ) is shaped such that the raising and lowering aid during the pivoting movement of the pivot arms ( 3 . 4 ) goes through a dead center. Sliding pivot mechanism according to one of the preceding claims, characterized in that the energy accumulator ( 7 ) is designed as a tension spring. Sliding panning mechanism according to claim 4, characterized in that the energy accumulator ( 7 ) over a rope ( 74 ) with the lever element ( 8th ), wherein at least a portion of the rope ( 74 ) on the control contour ( 82 ) is present. Sliding panning mechanism according to claim 5, characterized in that the cable ( 74 ) on the lever element ( 8th ) and a lever element ( 8th ) near end ( 72 ) of the energy store ( 7 ) is attached. Sliding pivot mechanism according to claim 4, characterized in that at least a portion of the force accumulator designed as a tension spring ( 7 ) on the control contour ( 82 ) of the lever element ( 8th ) is present. Sliding pivot mechanism according to one of the preceding claims, characterized in that the lever element ( 8th ) releasably attached to the one of the pivot arms ( 3 . 4 ) or on the body ( 2 ) is attached. Household appliance, in particular dishwasher, cooking appliance, refrigerator or freezer with at least one on inner sides of a useful space, in particular Spülraumes, cooking chamber, cold room or freezer compartment with a sliding tilt mechanism ( 1 ) fixed tray ( 11 ), with which the filing ( 11 ) is extractable from the work space and can be raised, characterized in that the sliding swivel mechanism ( 1 ) is formed according to one or more of the preceding claims.

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