EP3645816A1

EP3645816A1 - Hinge

Info

Publication number: EP3645816A1
Application number: EP18733201.0A
Authority: EP
Inventors: Konrad Weber; Karsten Filges; Kai Michael Stuke; Mark Schneider; Jens Poischbeg; Alexander Heinz
Original assignee: Hettich ONI GmbH and Co KG
Current assignee: Hettich ONI GmbH and Co KG
Priority date: 2017-06-29
Filing date: 2018-06-13
Publication date: 2020-05-06
Anticipated expiration: 2038-06-13
Also published as: KR20200024265A; US20210148151A1; PL3645816T3; WO2019001956A1; US11041336B2; CA3068504A1; JP2020525681A; RU2761809C2; CN110799718B; RU2019141197A3; AU2018292955A1; JP7111750B2; CN110799718A; RU2019141197A; DE102017114477A1; KR102523550B1; BR112019027660A2; EP3645816B1; AU2018292955B2

Abstract

The invention relates to a hinge (1) comprising a side part (2) that can be fastened to a wall and a hinge part (3) that can be pivoted relative to the side part (2), at which hinge part a door can be attached, and comprising a linear damper (10) arranged in the side part (3) with a housing (11, 11') and a piston rod (12). The housing (11, 11') of the linear damper (10) is non-rotatably fixed in the side part (2) on at least one journal (8, 9), on which a lever (4, 5) for pivotable mounting of the hinge part (3) is mounted.

Description

hinge

The present invention relates to a hinge with a wall-fixable side part and a pivotable relative to the side part hinge part on which a door can be fixed, and arranged in the side part of linear damper with a housing and a piston rod, which by a spring in one direction is biased away from the housing.

DE 20 2006 003 196 U discloses a furniture hinge in which a hinge part is pivotally mounted on a support member and a guide lever on a side part. On the guide lever, a boom is formed on which a linear damper with a housing and a relative to the housing slidable piston rod is pivotally mounted. Such a linear damper is well suited for damping a closing movement, but there is the problem that the space required in the side part is large due to the pivoting of the linear damper. It is therefore an object of the present invention to provide a hinge which in a particularly compact design damping at least one

Closing movement allows.

This object is achieved by a hinge with the features of claim 1.

In the hinge according to the invention, a housing of the linear damper is rotationally fixed in the side part and fixed to a holder, wherein the holder is fixed to at least one axis on which a lever for pivoting the hinge part is rotatably mounted. As a result, the axle can be used both for mounting the hinge part and for fixing the linear damper. On the one hand, this leads to a reduction in the number of components, and on the other hand, this makes it possible to fix the linear damper in the immediate vicinity of the lever, so that the linear damper requires comparatively little installation space.

The holder can be fixed to two axes or in an alternative embodiment, the holder can be fixed against rotation over at least one axis and with a body edge of the holder on the side part. The holder preferably has a U-shaped shaped part, which has two legs with openings, in which at least one axis is inserted. Particularly preferably, the at least one axis has a polygonal region, which more nearly coincides with at least one opening of a limb of the holder. This can be done by inserting the axis a simple installation of the linear damper.

The linear damper preferably comprises a pot-shaped housing, which is formed integrally with the holder. Alternatively, the housing of the linear damper may also be cup-shaped and have on the side facing away from the bottom at least one radially outwardly projecting step, so that the housing can be inserted into an opening on the holder. Regardless of whether the housing and the holder are one or more components, a linearly displaceable piston, on which the piston rod is fixed, is preferably arranged in the housing.

In a further embodiment, a control cam is formed on one of the levers, which compresses the linear damper shortly before reaching a closed position and during an opening movement shortly before reaching the maximum opening position during a closing movement of the hinge. As a result, the linear damper can be used both for closing damping and for opening damping. Optionally, the opening damping can also be dispensed with. The control cam is preferably formed on at least one bent web of the lever or hinge part and slides along a pin which bears against the linear damper. The pin can be linearly guided in a slot of the holder, so that the pin is linearly displaced over the control cam and the linear damper compresses accordingly or a divergence allows. But it is also possible to control the damper directly through the control cam.

For a particularly compact design, the length of the stroke of the linear damper with less than 5 mm is made small, in particular, the stroke can be between 3 mm and 4.2 mm. The length of the linear damper is preferably less than 20 mm, in particular less than 1 8 mm, so that the linear damper occupies only a small volume in the side part.

The invention will be explained in more detail with reference to several embodiments with reference to the accompanying drawings. Show it : Figure 1 is an exploded perspective view of a hinge according to the invention;

Figure 2 is a sectional side view of the hinge of Figure 1 in a closed position;

Figures 3 and 4 are two views of the hinge of Figure 2 in central opening positions;

Figure 5 is a view of the hinge of Figure 2 in a maximum

Opening position;

FIG. 6 shows a diagram for the illustration of the longitudinal extension of FIG

Damper based on the opening position of the hinge part;

Figure 7 is a partially cutaway perspective view of

Hinge of Figure 1 with mounted holder;

Figure 8A is a top view of the hinge cut through the holder with linear damper;

FIG. 8B detailed view of the section from FIG. 8A on holder and linear damper;

FIG. 9 shows a perspective view of the line damper fixed to the holder;

Figure 1 0 is a plan view of the holder of Figure 9;

1 1 is a perspective view of a modified embodiment of a one-piece holder with molded

Housing, and

Figure 1 2 is an exploded perspective view of the holder with the linear damper of Figure 11. A hinge 1, in particular for furniture or household appliances, comprises a side part 2 which can be fixed to a side wall of a furniture body or to another wall. On the side part 2, a hinge part 3 is pivotally mounted, on which a door can be fixed, which is pivotable via the hinge 1 from a closed position to an open position. For this purpose, two levers 4 and 5 are provided between the side part 2 and the hinge part 3. The lever 4 is U-shaped, wherein the lever 4 has lateral webs 44. The lever 4 in this case has openings 47 on the webs 44, through which an axle 6 is inserted in order to support the lever 4 rotatably mounted on the hinge part 3. Furthermore, a spaced axis 7 is formed integrally with the axis 6, which is pushed through by an eyelet 56 on the lever 5 to rotatably support the lever 5 on the hinge part 3. The lever 5 can also consist of several individual parts of flat parts which, when placed against one another, produce a lever 5 with corresponding holes for the axes 7 and 9.

The side part 2, which is U-shaped and has two legs 20 and a connecting web 21, has on the legs 20 openings 22, through which the axis 8 is inserted to support the lever 4 rotatably mounted on the side part 2. Further, 20 openings 23 are formed on the legs, through which an axle 9 is inserted to support the lever 5 rotatably mounted on the side part 2. In order to dampen a closing movement of the hinge part 3, a linear damper 1 0 is provided, which has a cup-shaped housing 1 1 and a relative to the housing 1 1 movable piston rod 1 2. On the piston rod 1 2, a piston 13 is fixed to 1 1 damping forces to produce relative to the housing during a movement of the piston 1. The linear damper 1 0 has a compact construction, and the lifting movement of the piston rod 1 2 is preferably in a range between 2 mm and 6 mm, in particular 3 mm to 5 mm.

The linear damper 1 0 is fixed to a holder 1 5, which is arranged in the side part 2. The holder 1 5 is U-shaped and comprises at the connecting portion an opening 1 9, in which the housing 1 1 of the linear damper is inserted until a radially outwardly projecting edge on the housing 1 1 rests against the holder 1 5. Two tabs 29 are formed on the holder, which move the housing 11 in the longitudinal direction of the piston. limit 12 bar. The holder 1 5 comprises on the two legs openings 1 7 and 18, which are penetrated by two axes 8 and 9, which are inserted into the side part 2. Thus, the holder 1 5 and thus also the linear damper 1 0 rotatably held in the side part 2. The holder 15 further includes a slot 1 6, which serves to guide a pin 14. The pin 14 is located at a front end of the piston rod 1 2 to compress the linear damper 1 0. The pin 14 may also be fixedly connected to the piston rod 1 2, so that on the piston rod 12, a kind of hammer head for guiding the piston rod 1 2 in the slot 1 6 is formed. In the linear damper 10, a spring 75 is further provided to bias the piston rod 12 into a protruding position.

The side part 2 can optionally be fixed directly to a side wall of a carcass. In the illustrated embodiment, however, a mounting plate 30 is fixed to the side wall, on which a holding element 31 is held, on which the side part 2 is adjustably held. The holding element 31 has a slot-shaped opening 36 for a height adjustment 50 and an opening 35 for a depth adjustment 40. The depth adjustment 40 has an eccentric pin 41, which is performed by a recess 24 on the side part 2 and engages in the opening 35. The height adjustment 50 has a guide groove 51 which is inserted in the opening 36 on the holding element 31 and a thread 52 which is engaged by means of the threaded bore 25 in the side part 2. The holding element 31 is further latched to the mounting plate 30 via a latching element 34 which is rotatably mounted on the holding element 31 via an axis 32 and is also biased by a spring 33.

The hinge 1 further comprises a spring 60, which is designed as a leg spring and has a first spring arm 61, which is supported on the lever 4. A second opposite spring arm 62 is supported on the lever 5, wherein for this purpose a receptacle 63 is formed on a web 55 on the lever 5. Alternatively, other closing spring arrangements known in the art may also be used. For example, arrangements with a leaf spring can also be used.

In Figure 2, the hinge 1 is shown in an assembled position with the hinge part 3 in a closed position. If the hinge part 3 is now pivoted in the opening direction, as shown in FIG By pivoting the lever 4, the cam 45 is rotated about the axis 8, whereby the pin 14 along the cam 45 slides along. When moving in the opening direction, the longitudinal extent of the linear damper 1 0 is increased, and the piston rod 1 2 moves out of the housing 1 1 out.

FIG. 4 shows a middle opening position, in an angle range between 40 ° and 65 °, in which the linear damper experiences its maximum longitudinal extension. The pin 14 is in a receptacle on the control cam 45, and the piston rod 1 2 is in the maximum outstanding position. If the hinge part 3 now moves further in the opening direction, the lever 4 again pivots in the opposite direction, and the pin 14 slides back along the control cam 45. As a result, the linear damper is again slightly compressed by retracting the piston rod 1 2 until the position shown in FIG. 5 is reached. In this position, it can be seen how the lever 4 with its webs 44 engages over the lever 5. In the maximum opening position, the linear damper has a significantly longer longitudinal extent than in the closed position. Other cams 45 can be used to control the linear damper, for example, in the maximum opening position and the linear damper 1 0 can be retracted more, especially if shortly before reaching the maximum opening position, a stronger opening damping should be effected. The cam can also be designed so that the piston rod is retracted in the maximum opening position, but the stroke of the piston rod over the angular range of the maximum longitudinal extent of the damper to the maximum opening position of the hinge part 3 so low or the stroke of the piston rod 1 2 so slowly is that almost no damping effect occurs. In any case, the linear damper undergoes a maximum longitudinal extension during an opening movement of the hinge part 3. In the closing direction, the hinge part 3 is moved from the position shown in FIG. 5 back into the position shown in FIG. 2, in which case the linear damper also undergoes a maximum longitudinal extension and is strongly compressed before reaching the closed position, which is necessary Damping forces leads. By interposing a pin 14 between the control curve 45 and the piston rod 12, transverse forces are avoided since the pin 14 is linearly guided on the oblong hole 16 of the holder 15.

FIG. 6 shows a diagram in which the position of the piston rod is represented by a lifting movement relative to the opening angle of the hinge part 3. is placed. It can be seen that in the closed position, the piston rod 1 2 in the retracted position and at an opening movement, the maximum longitudinal extent of the linear damper is in an angular range between 50 and 75 °. If the hinge part 3 reaches a maximum opening position of about 1.05 °, the linear damper is slightly compressed again, with less or no damping forces acting on the hinge part 3 during the pivoting movement up to the maximum opening position. If the hinge part 3 is moved in the closing direction, the damping forces begin to act at an angle between 25 and 40 ° before the closing position, in order to brake the hinge part 3. About the spring 60, however, the hinge part 3 is automatically moved to the closed position.

In Figure 7, the hinge 1 is shown again in the mounted position, and it can be seen that the housing 1 1 'of the linear damper in the side part 2 is taken and occupies only a small volume of construction. The housing 1 1 'is arranged between the height adjustment 50 and the axes 8 and 9, wherein the extension of the linear damper in the longitudinal direction of the piston rod 1 2 preferably less than 20 mm, in particular less than 1 8 mm. Despite this small extent sufficiently high damping forces can be provided.

In Figures 8A and 8B, the drive mechanism for moving the piston rod 1 2 and the positioning of the holder 1 5 'of the linear damper is shown. The piston rod 1 2 is driven by the pin 14 which rests against one end face of the piston rod 1 2 and is aligned perpendicular to the piston rod 1 2. The pin 14 is guided through the slot 1 6 in the holder 1 5 'and can push the piston rod 1 2 for the generation of damping forces in the cup-shaped housing 1 1'. The spring 60 is held by the axis 8 in an intermediate space of the holder 1 5 ', executed here in the one-piece construction with the housing 1 1'. For a compact design and the spring arm 62 freely movable on the housing 1 1 'past the housing 1 1' of the damper off-center on the holder 1 5 'is formed. The spring arm 62 can thus extend next to the housing 1 1 'in a free space created thereby.

In Figure 9, the linear damper with the cup-shaped housing 1 1 and the holder 1 5 is shown. The holder 1 5 is formed as a U-shaped molding, wherein at each of the two legs of the holder 1 5 a slot 1 6 for guiding the Pin 14 is formed. Further, the holder 1 5 is provided on both legs with openings 1 7 and 18 which are penetrated by the axes 8 and 9, so that the holder on the axes 8 and 9, which also pass through the openings 22 and 23 on the side part 2 , is fixed to the side part 2. The holder 1 5 is thus rigidly fixed to the side part 2, and also the linear damper is rotatably fixed to the holder 15, and only the piston rod 1 2 can move linearly relative to the holder 1 5. Alternatively, it would of course be possible to fix the piston rod 1 2 to the holder 1 5 and only to move the housing 1 1 linear.

In order to fix the housing 1 1 in the direction of movement of the piston rod 12, two integrally formed tabs 29 are provided on the holder 15, which form a stop for an edge of the cup-shaped housing 1 1. The housing 1 1 has at the opposite end to a bottom radially outwardly projecting step 28, which ensures that the housing 1 1 can indeed be inserted through the opening 1 9 in the holder 1 5, but only up to the stage 28. On the opposite side of the step 28, the tabs 29 are provided which limit or prevent movement towards the hinge part 3.

In the figures 7 and 8, the housing 1 1 and the holder 15 is formed of two different parts. In the modified embodiment shown in Figures 9 and 10, a cup-shaped housing 1 1 'integral with the holder 15' is formed, for example as a molded plastic part, which is produced by injection molding. The holder 1 5 'again comprises two plate-shaped legs, on which openings 1 7 and 1 8 are formed for the passage of the axes 8 and 9. Further, a slot 1 6 is provided for guiding the pin 14 on both legs, so that the unit of housing 1 1 'and holder 15' as in the previous embodiment in the side 2 part of the hinge can be used. In order to also high forces in

Longitudinal direction of the piston rod to receive 1 2, the cup-shaped housing 1 1 'via reinforcing ribs 1 9' with the integrally formed holder 1 5 'is connected. In Figure 1 0, the linear damper is shown in an exploded view. On the piston rod 1 2 a disc-shaped holder 71 is formed, which has a plurality of throttle openings 72 at the periphery, which are flowed through in a movement of the piston rod 12 in the housing 1 1 '. A piston ring 70 is between the disc-shaped holder 71 and a fixing element 74 arranged, in particular with little axial play, wherein the fixing element 74 is fixed via a pin 73 at an opening of the piston rod 1 2. The axial play of the piston ring 70 ensures that the extension movement of the piston rod 1 2 can take place relatively smoothly, while the depression of the piston rod 12 into the housing 1 1 'leads to high damping forces due to the small flow cross sections. The piston and the piston rod 1 2 are biased by a spring 75 in the extended position, wherein the spring 75 is supported on one side at the bottom of the housing 1 1 'and abuts on the opposite side of the fixing xierelement 74.

On the pot-shaped housing, a seal 76 is further held on the step 28, which abuts with an outer sealing lip 78 or a sealing bead on an inner wall of the step 28. The seal 76 further has an inner opening 77 which is penetrated by the piston rod 1 2, so that the piston rod 1 2 is movable relative to the seal 76.

The seal 76 is held by a cover 80, which is fixed by clamping with an outer ring on the inner wall of the step 28. The cover 80 comprises an inner ring 82 with an opening 81 which is penetrated by the piston rod 1 2. The inner ring 82 is resiliently mounted via spring elements 83 in the axial direction of the piston rod 1 2 and presses the seal 76 into the housing 1 1 'inside. When the piston rod 12 is moved into the housing 1 1 ', the piston rod 1 2 displaces a certain volume, so that a damping fluid, for example oil, requires more volume. As a result, the seal 76 in the axial direction on the housing 1 1 'slightly shifted against the force of the spring elements 83, so that the volume of the piston rod 1 2 can be compensated. When the piston rod 12 is again pushed out of the housing 1 1 'by the spring 75, a volume compensation takes place in the opposite direction, and the seal 76 is pushed back into the housing 1 1' by the spring elements 83. As a linear damper, of course, other piston can be provided, which are fixed to the piston rods 1 2. The linear damper with the housing 1 1 or 1 1 'and the piston rod 1 2 preferably has a length less than 20 mm, in particular less than 1 8 mm, so that a particularly compact design is given. LIST OF REFERENCE NUMBERS

1 hinge

2 side panel

3 hinge part

4 levers

5 levers

6 axis

7 axis

8 axis

9 axis

10 linear dampers

1 1, 1 1 'housing

12 piston rod

13 pistons

14 pen

15, 15 'holder

1 6 slot

17 opening

18 opening

19 opening

19 'reinforcing rib

20 thighs

21 connecting bridge

22 opening

23 opening

24 recess

25 threaded hole

28, 28 'level

29 tab

30 mounting plate

31 retaining element

32 axis

33 spring

34 locking element

35 opening

36 opening

40 depth adjustment

41 cones 44 footbridge

45 control curve

47 opening

50 height adjustment

51 guide groove

52 thread

55 footbridge

56 eyelet

60 spring

61 spring arm

62 spring arm

63 recording

70 piston ring

71 holder

72 throttle opening

73 pen

74 fixing element

75 spring

76 seal

77 opening

78 sealing lip

80 lids

81 opening

82 ring

83 spring element

Claims

claims

Hinge (1) having a side part (2) which can be fixed to a wall and a hinge part (3), which can be fixed relative to the side part (2), on which a door can be fixed, and a linear damper (10) arranged in the side part (3) a housing (1 1, 1 1 ') and a piston rod (12), which in particular by a spring (75) is biased, characterized in that the housing (1 1, 1 1') of the linear damper (10) via a holder (15) rotationally fixed in the side part (2) on at least one axis (8, 9) is fixed, on which a lever (4, 5) for pivotally mounting the hinge part (3) is mounted.

Hinge according to Claim 1, characterized in that the holder (15, 15 ') has a U-shaped shaped part which has openings (17, 18) on two legs which are in each case penetrated by an axle (8, 9).

Hinge according to claim 1 or 2, characterized in that the cup-shaped housing (1 1 ') with the holder (15') is integrally formed.

Hinge according to claim 1 or 2, characterized in that the

Housing (1 1) of the linear damper (10) is cup-shaped and formed on the side facing away from the bottom at least one radially outwardly projecting step (28) and the housing (1 1) in an opening (19) of the holder (15 ) is inserted.

Hinge according to one of the preceding claims, characterized in that the housing 1 1, 1 1 'off-center in the holder 15, 15' is positioned.

Hinge according to one of the preceding claims, characterized in that in the housing (1 1, 1 1 ') a linearly displaceable piston is arranged, which is fixed to the piston rod (12).

Hinge according to one of the preceding claims, characterized in that on a lever (4) for supporting the hinge part (3) a control cam (45) is formed, which compresses the linear damper (10) in a closing movement shortly before reaching a closed position.

8. Hinge according to one of the preceding claims, characterized in that on a lever (4) for supporting the hinge part (3) a control cam (45) is formed, which compresses the linear damper (10) in an opening movement before reaching the maximum opening position.

9. Hinge according to claim 7 or 8, characterized in that the

Control cam (45) is formed on at least one curved web and slides along a pin which rests against the piston rod (12) of the linear damper (10).

10. Hinge according to claim 9, characterized in that the pin (14) in a slot (1 6) on the holder (15) is linearly guided.

1 1. Hinge according to one of the preceding claims, characterized in that the length of the stroke of the linear damper (10) is less than 5 mm, in particular between 3 mm and 4.2 mm.

12. Hinge according to one of the preceding claims, characterized in that the length of the linear damper (10) is smaller than 20 mm, preferably smaller than 18 mm.

13. Hinge according to one of the preceding claims, characterized in that one of the axes (8, 9) carries a spring for closing support of the hinge, wherein the spring in the intermediate space of the holder (15, 15 ') is arranged.

14. Hinge according to claim 13, characterized in that a spring arm (61) of the spring (60) extends in a free space next to the housing (1 1, 1 1 ').

15. Hinge according to one of the preceding claims, characterized in that the side part (2) is adjustably held on a mounting plate (30) and a holding element (31), wherein the side part (2) via a height adjustment (50) and a depth adjustment ( 40) relative to the mounting plate (30) is adjustable.