EP3380693B1 - Damper assembly of a cup hinge - Google Patents

Description

The invention relates to a damper assembly for insertion in a hinge cup of a concealed hinge with a carrier part and with a cylinder-piston unit which comprises a cylinder which is axially displaceable relative to the carrier part and can be reset by means of spring elements of the damper assembly and a piston rod guided in the cylinder and protruding from it, wherein the carrier part has an integrated receiving web with a piston rod receptacle, in which the piston rod is fixed by means of an annular groove running around the piston rod head, the piston rod head protruding from the receiving web and wherein the carrier part has two spaced apart, elastically deformable fixing elements on its side opposite the receiving web and where the carrier part comprises a carrier edge in its apex area, which is formed axially symmetrically to the vertical central longitudinal plane of the damper assembly on a carrier disk of the carrier part, as well as a concealed hinge with egg such a damper assembly.

From the US 8 505 165 B2 and the DE 20 2012 003 508 U1 such damper assemblies are known. When assembling the damper assembly in a hinge cup, high assembly forces are required. There is also the risk of permanent deformation of the assembled components.

From the DE 20 2010 015 536 U1 , the DE 10 2011 103 894 A1 and the WO 2014/000 931 A1 damper assemblies with a rigid piston rod holder are known. The force flows from the piston rod via the piston rod holder and the receiving part into the hinge cup.

the AT 509 720 B1 discloses a device in which the piston rod can be fixed in a spring plate. The device can be fixed in the hinge cup by means of two laterally arranged locking lugs.

The present invention is based on the object of developing a damper assembly that can be securely and interchangeably mounted in a concealed hinge with little effort, as well as a concealed hinge with such a damper assembly.

This problem is solved with the features of main claim 1. For this purpose, the carrier edge comprises a base web connected to the carrier disk. The receiving web projects outwardly beyond the base web, the receiving web protruding beyond the contour of the carrier plate in a plan view of the unloaded damper assembly. The receiving web is oriented at least approximately parallel to the base web. In addition, the receiving web is designed to be elastically deformable, so that the receiving web is deformable when the damper assembly is inserted into a hinge cup.

In the concealed hinge with the damping assembly, the damper assembly is fixed in the hinge cup of the concealed hinge by means of the fixing elements and the piston rod head in a non-positive and / or positive manner.

Figur 1:

Scharniertopf mit Dämpferbaugruppe;

Figur 2:

Längsschnitt der Figur 1;

Figur 3:

Isometrische Ansicht der Dämpferbaugruppe;

Figur 4:

Isometrische Ansicht der Dämpferbaugruppe von der Kolbenstangenseite;

Figur 5:

Trägerelement;

Figur 6:

Stirnansicht des Trägerelements.

Further details of the invention emerge from the subclaims and the following description of schematically illustrated embodiments.

Figure 1:

Hinge cup with damper assembly;

Figure 2:

Longitudinal section of the Figure 1 ;

Figure 3:

Isometric view of the damper assembly;

Figure 4:

Isometric view of the damper assembly from the piston rod side;

Figure 5:

Support element;

Figure 6:

Front view of the carrier element.

the Figures 1 and 2 show the hinge cup (10) of a concealed hinge with a damper assembly (30) inserted therein. A concealed hinge generally has a mounting arm which can be pivoted relative to the hinge cup (10) and to which the hinge cup (10) is connected via one or two articulated levers. If necessary, the mounting arm can also be arranged directly on the hinge cup (10). The hinge cup (10) and the mounting arm are attached to furniture parts that can move relative to one another, for example a door and a body. For example When the door is closed, the assembly arm and / or the articulated lever dips into the hinge cup (10). Here, the damper assembly (30) is actuated, which delays the closing movement and thus prevents the door from slamming.

In the exemplary embodiment, the hinge cup (10) has a fastening flange (11) with two external through bores (12) for fastening elements, for example fastening screws. Between the through bores (12), the hinge cup (10) has a recess (13), for example, in the form of a mushroom when viewed from above. Their depth is, for example, a quarter of the distance between the two through bores (12). The bottom (14) of the depression (13) can also be stepped. The depression (13) comprises a longitudinal section (15) and an adjoining segment (16) in the shape of a segment of a circle. The longitudinal section (16) is oriented in the longitudinal direction (5) of the hinge cup (10) and adjoins, for example, a hinge opening (17) in the base (14). The base (18) of the circular segment-shaped section (16) is oriented normal to the longitudinal direction (5) of the concealed hinge and points in the direction of the mounting arm. This base (18) is formed by means of a two-part front wall (19) which is adjacent to the longitudinal section (15) on both sides. In the exemplary embodiment, an opening (23) with, for example, a circular cross-sectional area is arranged in each of the front wall parts. The front wall (19) can, however, also be designed without these openings (23). The wall (24) of the hinge cup (10) that delimits the segment (16) in the form of a segment of a circle and is oriented normal to the base (14) is designed as a cylinder jacket surface. This wall (24) can optionally have openings. The hinge cup (10) is designed, for example, axially symmetrical to a vertical central longitudinal plane of the concealed hinge. This central longitudinal plane is oriented in the longitudinal direction (5) of the concealed hinge.

the Figure 2 shows a longitudinal section of the hinge cup (10) with inserted damper assembly (30). The damper assembly (30) sits in the recess (13) and is fixed on the walls (19, 24) of the hinge cup (10) at a distance from the base (14). For example, the distance to the floor is a few tenths of a millimeter. The damper assembly (30) comprises a carrier part (31) which carries a cylinder-piston unit (61). The hydraulic cylinder-piston unit (61), for example, comprises a cylinder (62) and a piston rod (63) with a piston (64) guided in the cylinder (62). In the exemplary embodiment, the piston rod (63) is stationary relative to the hinge cup (10). The cylinder (62) can be displaced in the longitudinal direction (5) of the hinge cup (10) relative to the piston rod (62). In the representation of the Figure 2 The cylinder (62) protrudes with its cylinder base (65) into the longitudinal section (15) of the recess (13). The cylinder base (65) is curved, for example, in a uniaxial manner, the center of the radius being in the region of the cylinder wall (66) adjacent to the hinge cup base (14).

In the Figures 3 and 4 the damper assembly (30) is shown in isometric views from below. the Figures 5 and 6 show the carrier part (31).

The carrier part (31) has a carrier disk (32), a carrier edge (33), a cylinder guide (34), spring pins (35) and support pins (36). In the exemplary embodiment, the carrier part (31) is an injection-molded part made from a thermoplastic material. The carrier disk (32) is designed, for example, in the shape of a segment of a circle, for example coaxially to the segment (16) of the hinge cup (10) in the shape of a segment of a circle. On their underside (37) are two parallel to one another, the cylinder guide (34) forming undergrip strips (34) are integrally formed. Two support pins (36) are integrally formed on the underside (37) of the carrier disk (32) on the side of the lower grip strips (34). These protrude from the carrier disk (32) in the normal direction.

In the apex area (38) of the carrier part (31), the carrier edge (33) is formed on the carrier disk (32) axially symmetrically to the vertical central longitudinal plane of the damper assembly (30). The vertical central longitudinal plane of the damper assembly (30) coincides in the installed state with the vertical central longitudinal plane of the concealed hinge. In the outer regions of the carrier edge (33) oriented normal to the underside (37) of the carrier disk (32), inwardly projecting spring receptacles (35) are arranged. Both spring mounts (35) are aligned parallel to the longitudinal direction (5) when the damper assembly (30) is installed in the hinge cup (10).

The carrier edge (33) comprises a base web (41) connected to the carrier disk (32) and a receiving web (42) oriented at least approximately parallel thereto. The arc of the base web (41) sweeps over an angle of 70 degrees, for example. In the exemplary embodiment, the arch of the receiving web (42) covers a sector with an opening angle of 33 degrees. The receiving web (42) is connected to the base web (41) on both sides by means of connecting sections (45). The connecting sections (45) are designed to be elastically deformable. In addition, three tear-off webs (46) are arranged in the embodiment between the receiving web (42) and the base web (41) in the central area, which in the representations of the Figures 3 to 6 connect the receiving web (42) to the base web (41). The receiving web (42) is thus connected several times to the base web (41).

In the representation of the Figure 4 according to the invention, the receiving web (42) protrudes outwardly beyond the base web (41) so that it protrudes beyond the contour of the carrier plate (32) in a plan view of the unloaded damper assembly (30). The thickness of the receiving web (42) is, for example, 90% of the thickness of the base web (41). The receiving web (42) has a piston rod receptacle (43). This is groove-shaped. The piston rod receptacle (43) has a conically shaped base (44), the imaginary tip of which is oriented away from the carrier part (31) and lies outside the receptacle web (42).

On the carrier part base (47) facing away from the apex area (38), two guide pins (48) and two fixing elements (51) are arranged symmetrically to the vertical central longitudinal plane. In each case a guide pin (48) is spaced apart from a fixing element (51) by means of a gap (54).

The guide pins (48) are aligned normal to the carrier disk (32). They are made longer in this direction than the fixing elements (51). At their protruding end they have an insertion bevel (49). This is directed away from the apex area (38).

The fixing elements (51) arranged outside the guide pins (48) each have a fixing element disc (52) and a fixing element pin (53) arranged, for example, in the center of the fixing element disc (52). The individual fixing element disk (52) can, however, also be designed without the fixing element pin (53). In the exemplary embodiment, the fixing element disks (52) are aligned with the fixing pegs (48) in a vertical plane normal to the vertical central longitudinal plane. However, you can also protrude from this plane against the direction of the apex area (38). The fixing element disks (52) are designed to be elastically deformable. The eg semi-cylindrical fixing element pegs (53) protrude in a direction opposite to the apex area (38) over the said normal plane to the vertical central longitudinal plane. The outer diameter of the individual fixing element pin (53) is slightly smaller than the diameter of the individual opening (23) of the hinge cup (10).

The cylinder (62) of the cylinder-piston unit (61) has an overhead guide foot (67) for insertion into the under-grip strips (34). The piston rod (63) protruding from the cylinder (62) has a circumferential annular groove (69) on its piston rod head (68). By means of this annular groove (69), the piston rod (63) is shown in FIG Figures 2-4 fixed in the piston rod receptacle (43) of the receiving web (42). The piston rod head (68) protrudes from the receiving web (42).

Pin-shaped spring holders (72) also protrude from the side surfaces (71) of the cylinder (62). These spring holders (72) are aligned with the spring pins (35) of the support part (31). A compression spring (81) is arranged between a spring pin (35) on the support element side and a spring holder (72) on the cylinder side. The two compression springs (81) arranged parallel to one another load the cylinder (62) in the extended position.

In the exemplary embodiment, a stroke limiter (91) is arranged on the carrier part (31). It comprises a lever (92), for example a pivot lever and a blocking pin (93). By means of this device (91), the stroke of the cylinder-piston unit (61) can be limited to a partial stroke of the total stroke. This stroke limiter (91) is used, for example, for doors with a small mass. In addition, the cylinder-piston unit (61) is in an extended position of the cylinder (62) at largely relaxed compression springs (81) can be locked by means of the locking pin (93). The damper assembly (30) can also be designed without a stroke limiter (91).

When assembling the damper assembly (30), the cylinder-piston unit (61) is pushed into the cylinder guide (34) of the support part (31) and locked behind a pull-out lock (55). This pull-out protection (55) is formed, for example, by the guide pins (48). The e.g. pulled out piston rod (63) is clipped into the receiving web (42) in such a way that the annular groove (69) engages in the piston rod receptacle (43). Here, the tear-off webs (46) support the receiving web (42) so that it does not kink. After inserting the compression springs (81) and, if necessary, installing the stroke limiter (91), the damper assembly (30) is ready for use.

When inserting the damper assembly (30) into the hinge cup (10) of the open concealed hinge, the damper assembly (30) can be blocked by means of the stroke limiter (91). In the exemplary embodiment, the damper assembly (30) is attached to the hinge cup (10) at an angle so that the piston rod head (68) dips into the hinge cup (10) and the guide pins (48) are initially outside the hinge cup (10). Then the carrier part (31) is pressed into the hinge cup (10) with little force. The receiving web (42) is deformed in the process. The tear-off webs (46) can tear off. The piston rod (63) penetrating the receiving web (42) rests with its piston rod head (68) against the wall (24) of the hinge cup (10). When the support part (31) is pressed down, the guide pins (48) plunge into the hinge cup (10). They guide the damper assembly (30) during further insertion until the fixing elements (51) dip into the hinge cup (10). The assembly is finished when either the support pins (36) rest on the, for example, stepped bottom (14) of the hinge cup (10) or until the fixing element pins (53) snap into the openings (23) of the hinge cup (10). If necessary, the hinge cup (10) can have an additional anti-lift device to secure the damper assembly (30). The stroke limiter (91), which may be activated to block, can be released. If the door mass is low, the stroke of the cylinder-piston unit (61) can be limited by means of the stroke limiter (91).

The fixing elements (51) and the piston rod head (68) now form the corners of an isosceles triangle which connects the three contact points of the damper assembly (30) in the hinge cup (10). In the exemplary embodiment, this triangle forms an angle of 12 degrees with the plane of the carrier plate (32), the plane of the triangle being inclined in the direction of the piston rod head (68). After being inserted into the hinge cup (10) shown, the damper assembly (30) is fixed in a non-positive and positive-locking manner. When used in a hinge cup (10) without openings (23), the elastically deformed fixing elements (51) and the piston rod (63) cause the damper assembly (30) to rest against the hinge cup (10) in a non-positive 3-point manner. In both cases, the damper assembly (30) can compensate for tolerances in the hinge cup (10) and bridge the play between the components.

The damper assembly (30) can also be retrofitted to an existing concealed hinge. When using the non-positive variant, the hinge cup (10) does not need to be specially prepared for this. This retrofitting can also be carried out on an already installed hinge.

After installing the concealed hinge with the damper assembly (30) in a piece of furniture, the compression springs (81) press the cylinder (62) relative to the piston rod (63) into the extended position. When closing the door, for example, the assembly arm hits the cylinder base (65). The force vector when the mounting arm strikes the cylinder base (65) lies, for example, in the plane of the triangle of the fixing elements (51) and the piston rod head (68) or in a plane parallel to this. The cylinder (62) is moved against the force of the compression springs (81) relative to the piston rod (63). The cylinder base (67) slides along the under-grip guides (34) of the carrier plate (32). The oil displaced in the cylinder (62) delays the closing movement of the door. The forces are transmitted directly to the hinge cup (10) via the piston rod (63) of the cylinder-piston unit (61).

In order to remove the damper assembly (30) from the hinge cup (10), the carrier plate (32), for example, is loaded in the direction of the apex area (38). The front fixing elements (51) are released from the front wall (19). The carrier plate (32) can now be lifted and swiveled out at the front. The hinge cup (10) remains without plastic deformation.

The hinge can then be operated without a damper assembly (30) or a new damper assembly (30) can be used. A new damper assembly (30) is inserted as described above. Only a small amount of force is required for dismantling and assembly.

Combinations of the individual exemplary embodiments are also conceivable, as long as they fall under the scope of protection of the appended claims.

List of reference symbols:

5

Longitudinal direction

10

Hinge pot

11

Mounting flange

12th

Through holes

13th

Depression

14th

Bottom of (13)

15th

Longitudinal section

16

segment of a circle

17th

Joint opening from (14)

18th

Base

19th

Front wall

23

breakthrough

24

Wall

30th

Damper assembly

31

Carrier part, carrier element

32

Carrier disk, carrier plate

33

Carrier edge

34

Cylinder guide, under grip strips

35

Spring pins, spring mounts

36

Support pin

37

Bottom of (32)

38

Apex area

41

Footbridge

42

Receiving bridge

43

Piston rod mount

44

Reason from (43)

45

Connecting sections

46

Tear-off bars

47

Carrier part base

48

Guide pin

49

Lead-in bevel

51

Fixing elements

52

Fixing element disc

53

Fixing element spigot

54

gap

55

Pull-out protection

61

Cylinder-piston unit

62

cylinder

63

Piston rod

64

piston

65

Cylinder bottom

66

Cylinder wall

67

Guide foot

68

Piston rod head, fixing element

69

Ring groove

71

Side faces

72

Spring holders

81

Spring elements, compression springs

91

Stroke limitation, locking device

92

Lever, swivel lever

93

Locking pin

Claims (6)

1. Damper assembly (30) for insertion into a hinge cup (10) of a concealed hinge, having a support member (31) and a cylinder-piston unit (61), which comprises a cylinder (62), which is axially displaceable relative to the support member (31) and can be reset by means of spring elements (81) of the damper assembly (30), and a piston rod (63) guided in the cylinder (62) and protruding from the same, wherein the support member (31) has an integrated mounting bar (42) with a piston rod mount (43), in which the piston rod (63) is fixed by means of a ring groove (69) extending circumferentially around the piston rod head (68), wherein the piston rod head (68) protrudes from the mounting bar (42), wherein the support member (31) on its side opposite to the mounting bar (42) has two elastically deformable fixing elements (51), which are spaced apart from one another, and wherein the support member (31) comprises a supporting edge (33) in its apex region (38), which supporting edge (33) is moulded onto a supporting disc (32) of the support member (31) axially symmetrical to the vertical centre longitudinal plane of the damper assembly (30), characterized in that

   - the supporting edge (33) comprises a bottom bar (41) connected to the supporting disc (32),

   - the mounting bar (42) outwardly protrudes beyond the bottom bar (41), wherein the mounting bar (42) protrudes beyond the contour of the supporting plate (32) in a top view of the unloaded damper assembly (30),

   - the mounting bar (42) is oriented at least approximately parallel to the bottom bar (41), and

   - the mounting bar (42) is designed to be elastically deformable, such that the mounting bar (42) is deformable when the damper assembly (30) is inserted into a hinge cup (10).
2. Damper assembly (30) according to claim 1, characterized in that the fixing elements (51) and the piston rod head (68) of the piston rod (63) form corners of an isosceles triangle.
3. Damper assembly (30) according to claim 2, characterized in that the piston rod (63) protrudes beyond the contour of the support member (31) in a top view of the support member (31).
4. Damper assembly (30) according to claim 1, characterized in that it has tear-off bars (46) which connect at least the non-deformed mounting bar (42) to the bottom bar (41).
5. Concealed hinge having a damper assembly (30) according to claim 1, characterized in that the damper assembly (30) is fixed in the hinge cup (10) of the concealed hinge in a friction-locking or positive-locking manner by means of the fixing elements (51) and the piston rod head (68).
6. Concealed hinge according to claim 5, characterized in that the tear-off bars (46) of the deformed mounting bar (42) are separated.

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