CN111344472A - Opening and closing device fitting for furniture, side wall of furniture body and furniture with side wall - Google Patents

Abstract

The invention relates to an opener fitting (1) for furniture, the opener fitting having a lever mechanism (20) and a damping unit (50), the lever mechanism being provided with a plurality of openers for guiding the furniture of the furniture A lever, the damping unit has a damper (51) for damping the opener when approaching the end position, the damper (51) being coupled to one of the levers of the lever mechanism (20) via a lever chain (52). The opener fitting (1) is distinguished in that the lever chain (20) of the damping unit (50) has a dead center, whereby a unidirectional movement of one of the levers of the lever mechanism (20) is converted into Bidirectional movement on damper (51). The invention also relates to a side wall ( 2 ) of a furniture body into which an opener fitting of this type is inserted or integrated, the invention also relates to a piece of furniture having a furniture body and provided with an opener fitting of this type (1) side wall (2).

Description

Opener fittings for furniture, side walls of furniture bodies and with side walls furniture

technical field

The invention relates to an opener fitting for furniture, which has a lever mechanism and a damping unit provided with a plurality of levers for guiding the opener of the furniture. In this case, the damping unit has a damper for damping the open-closer when the end position is approached, wherein the damper is coupled via a lever chain to one of the levers of the lever mechanism. Furthermore, the invention relates to a side wall of a furniture body and to a piece of furniture having a side wall.

Background technique

Furniture, in particular kitchen furniture or residential furniture (eg lower cabinets or wall-mounted cabinets) generally have a furniture body which is open to the front, on which movable furniture parts guided by means of fittings are fitted. In particular in wall-mounted cabinets, in order to close the furniture body, usually a shutter is used as a movable furniture part, which is supported by at least one, usually two laterally arranged shutter fittings. The opener fitting enables the opener to open upwards (swing up), wherein the opener can be pivoted, for example, about a horizontally extending assumed pivot axis arranged in the upper region of the furniture body. Other upwardly directed opening movements of the shutter are likewise conceivable.

The lever mechanism of the opener fitting is usually constructed in multiple parts as a multi-joint lever mechanism, so that the so-called door support lever, on which the opener is fastened, performs a combined pivoting and moving movement, or about the pivot axis. The oscillating movement of the oscillating axis is located outside the opener fitting and usually also outside the furniture body.

A switch fitting of the type mentioned at the outset is known from the publication CN 204826984U. In this opener fitting, the linear damper is coupled via the lever chain to one of the levers of the lever mechanism (the lever that guides and carries the furniture opener). The coupling is realized in particular by means of a guide curve, which is designed such that the damper does not activate the damper and thus activate the damper until the shutter is approaching the closed position. Starting from a certain open position of the shutter, the damper is not activated and thus does not impede the free movement of the shutter. No damping of the opening movement is provided near the fully open position of the opener.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a shutter fitting of the type mentioned at the outset, in which both the closing movement and the movement of the fully open end position are damped. Here, the opening and closing fittings should be constructed as compactly as possible, so that the opening and closing fittings can also be integrated into the side walls of the furniture body. Another object is to provide a side wall for a furniture body and furniture with such an opener fitting and its advantages.

This object is achieved by an opener fitting and a side wall or furniture having the features of the corresponding independent claims. Advantageous configurations and refinements are the subject of the dependent claims.

The opener fitting according to the invention of the type mentioned at the outset is distinguished by the fact that the lever chain of the damping unit has a dead center, so that a unidirectional movement of the lever of the lever mechanism is converted into a bidirectional movement on the damper.

Thus, according to the invention, a unidirectional (that is to say in one direction) movement of the opener (in a manner intercepted on any of the levers of the lever mechanism) is converted into a movement on the damper The oscillating movement, thus, both when closing and when opening the shutter, operates the damper in the (same) damping direction, starting from the intermediate open position. Thus, with only one damper, both the closing movement and the opening movement are damped when approaching the respective end position. By using only one damper for both end positions, the switch fitting can be constructed particularly compactly. As a result, the opening and closing fittings can also be machined into the side walls of the furniture body or inserted into recesses which are machined into the side walls from the end side of the side walls. Alternatively, the opening and closing fittings can also be arranged in the side walls such that at least one side wall of the opening and closing fittings or the housing of the opening and closing fittings forms substantially a plane with the side walls.

In an advantageous configuration of the opener fitting, the lever chain has at least two double-sided levers, which are each connected to one another on one lever arm by means of a transmission lever. A dead center is provided by aligning the connecting joint of the transfer lever with the axis of rotation of one of the double-sided levers. One of the double-sided levers can be, for example, a toggle lever, the other lever arm of which is connected to the lever of the lever mechanism. This connection can be achieved by manipulating a lever.

In a further advantageous configuration of the clutch fitting, the damper is a linear damper with a cylinder and a piston provided with a piston rod. In this case, the damper is pivotably fastened to the housing of the clutch fitting by means of a cylinder or a piston rod. A corresponding further element can be connected to the lever chain in a simple manner. Through the swing support of the lever chain and the damper, the one-way swing motion of the lever of the lever mechanism is transmitted to the bidirectional forward and backward motion of the piston rod (or cylinder) when the opener is opened or closed. In an alternative design, rotary dampers can also be used.

In a further advantageous configuration of the opener fitting, the lever mechanism forms a seven-joint lever mechanism, whereby a suitable combination of oscillating and translational movements for the guided opener is achieved.

In this case, a support lever, which is pivotably fastened to the housing of the opener fitting, serves as a lever which is connected to the lever chain. The bearing lever is preferably a double-sided lever and has a bearing arm and an actuating arm, wherein the bearing arm is connected to the other lever of the lever mechanism and the actuating arm is connected to the lever chain. Thus, the lever chain can be arranged in a simple manner outside the space occupied by the lever mechanism.

The side wall according to the invention for a furniture body is distinguished by the insertion or integration of an opener fitting of this type. The furniture according to the invention with a furniture body and a guided opener is distinguished in that such a furniture body has at least one side wall provided with an inserted or integrated opener fitting. It has the advantages described in relation to the opener fitting. In particular, furniture with guided openers can be provided, the interior space of which can be freely designed and visually pleasing in its full size.

Description of drawings

Next, the invention is explained in more detail on the basis of exemplary embodiments with the aid of the drawings. in:

Figures 1 to 4 respectively show side views of an exemplary embodiment of an opener fitting with an open housing in different open positions;

Figure 5 shows the opener fitting of the previous figures with a closed housing in a closed position;

Figure 6 shows the opener fitting of the previous figures with a closed housing in a partially open position;

Figure 7 shows in an isometric view a side panel of a furniture body with an integrated opener fitting.

Detailed ways

In FIGS. 1 to 6 , in the closed position ( FIGS. 1 , 5 ) of the shutter, which is guided by the shutter fitting and not shown here, in the different partially open positions ( FIGS. 2 , 3 and 3 ) The first embodiment of the opener fitting 1 is shown in Fig. 6) and in the fully open position (Fig. 4). Figures 1 to 4 show the opener fittings in side views, and Figures 5 and 6 in isometric views.

In the description, concepts such as above, below, left, right refer only to example figures selected in the corresponding figures. Concept front and rear generally involve the opening movement of the opener that is guided. Here, the front side is the side facing the user.

In FIGS. 1 to 4 , the housing 10 of the switch fitting 1 is each shown on one side in an open manner, in order to be able to show the internal structure of the switch fitting 1 . In all figures, the same reference numerals refer to the same elements. For reasons of visibility, not every element in the figures is provided with a reference numeral in all figures.

The housing 10 here consists of two side panels 11 , of which only the rear side panel is shown in FIGS. 1 to 4 , which is spaced apart from the at least partially surrounding frame 12 (see FIGS. 5 , 6 ). open and oriented parallel to each other. A plurality of rivets 13 (see FIGS. 5 , 6 ) are guided through the side plates 11 and the frame 12 , with which the housing 10 and thus the opener fitting 1 are held together. Instead of rivets, other fasteners, such as screws, can also be used. In the shown opener fitting 1 , all other components are fastened to the side plates 11 , for example also by rivets or studs guided through one or both of the side plates 11 .

The opener fitting 1 has a lever mechanism 20 with five levers or arms which are connected to each other or to the housing 10 in seven articulation points. The opener fitting 1 is thus constructed as a seven-joint hinge, wherein the opener fitting can alternatively also be embodied as a four-joint or other joint assembly. The lever mechanism 20 includes a door support lever 21 as an outer element of the lever mechanism 20 , which is connected to a mounting plate 31 via an adjustment device 30 . The switch to be guided by the switch fitting 1 is fitted onto this fitting plate 31 . The adjustment device 30 enables the adjustment movement of the mounting plate 31 and thus the shutter guided relative to the door support lever 21 .

The door support lever 21 is rotatably connected to the transmission lever 22 at the upper joint point in FIG. 1 . The door support lever 21 is connected to the steering lever 23 in the lower joint in the figure. The steering lever 23 and the transmission lever 22 are in turn articulated on the control lever 24 . At its rear end, the transmission lever 22 is connected to the support arm 251 of the support lever 25 , wherein the support lever 521 is again mounted rotatably on the housing 10 . Thus, the lever mechanism 20 forms a seven-joint lever mechanism.

As can be seen in particular from FIG. 4 , the individual levers or arms of the lever mechanism 20 are shaped such that they form an approximately elongated assembly in the open position of the shutter. During the opening or closing process, the external element of the lever mechanism 20, the door support lever 21, performs a combined rotational and translational movement, and the mounted opener not only oscillates by this combined rotational and translational movement, but also moves forward in this way, The opener is guided with its edge over the upper body edge. In this way, for example, the entire opening of the furniture body can be accessed.

Furthermore, the opener fitting 1 comprises a spring unit 40 which holds the opener in a spring-loaded manner not only in the closed but also in the fully open state. For this purpose, especially in the fully open state, the spring unit 40 can compensate for the weight of the shutter, so that the shutter remains in the open position without a further latching lever.

The spring unit 40 includes a spring group 41 having a plurality of compression springs 411 . The right side of the spring group 41 in the figure is mounted on the shaft unit 42 in an adjustable manner in the position of the spring group. The left-hand side in the drawing of the spring set 41 acts on the shorter end of an angular intermediate lever 43 , which is configured as a two-sided lever and is pivotably fastened to the housing 10 via a shaft 44 . On the end of the second, free lever arm of the intermediate lever 43 is mounted a pressure roller 431 which acts on the control section 221 of the transmission lever 22 .

The control section 221 is dome-shaped on its edge with a rising (to the left of the control section 221 in the figure) and a descending side (to the right of the control section 221 in the figure) extension. If the pressure roller 431 is in contact with the falling side, the pressure of the pressure roller 431 causes the lever mechanism 20 to move in the direction of the closed position. Accordingly, the mounted switch remains taut or closed. When the pressure roller is located linearly on the dome of the control section 221, the dead center is passed during the opening movement. During the continuation of the opening movement, the pressure roller 431 rests on the rising side of the control curve, wherein the pressure of the pressure roller 431 causes the lever mechanism 20 to move further in the direction of the opening position. Accordingly, the opening movement is aided and the shutter is held in the open position.

With the aid of the pivot unit 42, the suspension point of the spring group 41 can be moved and the preload of the pressure spring 411 can be changed in such a way that the pressing force of the pressure roller 431 is adapted to the weight and size of the opener.

FIGS. 5 and 6 show isometric views of the opener fitting of FIGS. 1 to 4 with the closed housing 10 , that is to say with the second side panel 11 attached. Figure 5 shows the switch fitting in the closed state of the switch mounted not visible here, and Figure 6 shows the partially open state, wherein the opening angle is about 10 degrees.

In the region of the frame 12 , the housing 10 is closed by the rivets 13 already described above. It will be appreciated that instead of the rivets 13 other connecting elements, such as screws, may be used to close the housing 10 . Alternatively, the closure of the housing can also be effected by an adhesive connection between the side panel 11 and the frame 12 . Obviously, the housing 10 can also be produced in other ways, for example by deep drawing. It is important for the housing 10 to be able to withstand the forces of the opener fitting 1 . The housing 10 produced, for example, by deep drawing can likewise have side walls 11 oriented parallel to one another.

In particular, FIG. 5 shows that in the closed position of the opener fitting 1 , the entire lever mechanism 20 including the adjusting device 30 is driven between the side plates 11 . Here, the mounting plate 31 , which is fitted on and associated with the opener and which is not associated with the adjustment device 30 , can only be positioned in front of the side plates 11 and not between the side plates 11 .

FIG. 7 shows the side wall 2 of the furniture body, not shown in detail, into which the opener fitting 1 according to the present application (as shown for example in FIGS. 1 to 4 ) is integrated. Furniture bodies generally have at least two side walls 2 of this type, into which the corresponding opener fittings 1 according to the application are integrated. Two (or if necessary a plurality of opener fittings 1 integrated into the gap of the furniture body) carry the opener that closes the body forwardly.

An opening 4 is formed in the front side 3 of the side wall 2 , through which the lever mechanism 20 of the opener fitting 1 exits. The opener fitting 1 is either inserted through the opening 4 into a groove formed into the side wall 2 behind the opening 4, or has been integrated into the side wall 2 when the side wall 2 is manufactured, or is The flank 5 is introduced and inserted laterally with the opening 4) on the end face 3. In all cases, the opener fitting 1 is integrated into the side wall 2 , wherein, at least in the first two cases, the opener fitting is covered on its side by the side 5 of the side wall 2 and therefore neither can Neither is seen from the outside of the furniture body nor from the inside thereof. What is important here is that the opener fitting 1 and the side wall 2 form one unit and that the side wall 2 with the inserted opener fitting has no or almost no thickness difference.

For integration into the side wall 2 of the furniture body, the thickness of the opener fitting 1 , that is to say the outer distance of the side panels 11 , is significantly limited by presets with regard to the wall thickness of the furniture body. In the side walls of a typical furniture body having a thickness of 16 millimeters (mm), the thickness of the opener fitting 1 is necessarily less than 16 mm and preferably less than or equal to 14 mm. Correspondingly, the lever mechanism 20 is constructed including the adjustment device 30 so that the lever mechanism can be moved between the two side plates 11 with this distance.

The shown adjustment device 30 enables lateral adjustment (lateral and height adjustment independent of each other) and tilt adjustment of the mounted opener. Furthermore, the mounted parts with the opener fitting, eg the opener of the fitting plate 31, can be simply separated from the rest of the opener fitting, which simplifies the installation of the opener on the opener fitting 1 and the furniture body assembly. Here, a part of the mounting plate 31 can also be located in the region of the side wall 2 , for example between the glue applied to the end side 3 next to the opening 4 and the edge strip. It is possible that the remaining mounting plate 31 has a structural height of less than a millimeter or a few millimeters, and thus lies in the range of the size of the gap between the end face 3 and the opener in the closed state.

According to the present application, a damping unit 50 is provided in the opener fitting 1, which damping unit damps not only the closing movement but also the opening movement by means of the damper 51 when the corresponding end position is approached. Next, the working principle of the damping unit is explained with reference to FIGS. 1 to 4 .

Here, as the damper 51, a linear damper having a cylinder 511 and a piston rod 512 is provided. The damper 51 works as a pressure damper which damps the movement of the piston rod 512 into the cylinder 511 , whereas the pulling out of the piston rod 512 from the damper 511 takes place without damping. In principle, however, the basic idea of the damping unit 50 described in detail below (the damping unit damps both the opening and closing movements by means of only one damper 51 when moving towards the end position) can be realized with a tension damper, where the tension damper , the pulling of the piston rod from the cylinder is damped, and conversely, the pushing of the piston rod into the cylinder is not damped. It is also possible to use a rotary damper.

The damper 51 is pivotably mounted on the housing 10 on one side, here by means of a cylinder 511 . The damper 51 is connected with a second point, here with a piston rod 512 , to a lever chain 52 , which is coupled to the lever of the lever mechanism 20 , here the support lever 25 .

In the illustrated embodiment, the lever chain 52 includes four levers, specifically, a steering lever 521 , a toggle lever 522 , a transmission lever 523 and a steering lever 524 . Of these levers, the toggle lever 522 and the steering lever 524 are designed as double-sided levers, both of which are rotatably fastened to the housing 10 in the central region.

The steering lever 524 is fastened to the damper 51 with a lever arm and is connected to the arm of the toggle lever 522 via a transfer lever 523 with a second lever arm. The second arm of the toggle lever 522 is coupled to the support lever 25 via the actuating lever 521 . For this purpose, the support lever 25 is designed as a double-sided lever, wherein the support arm 251 is used as a lever arm within the lever mechanism 20 and the actuating arm 252 is used for coupling to the lever chain 52 . A double-sided lever is understood here to mean that the point of action of the actuating lever 251 can lie not only between the joint axes of the bearing lever 24 or, as in the example here, on one side of the bearing lever 25 .

The special feature of the lever chain 52 is that the pivoting movement of the bearing lever 25 is transmitted to the damper 51 in such a way that, in the case of a homogeneously directed (unidirectional) pivoting movement of the bearing lever 25 (that is, a pivoting movement in one direction), The dead center is obtained as the movement of the piston rod 512 for the damper 51 is reversed.

The so-called dead center of the lever chain 52 is reached when the connecting joint of the toggle lever 522 and the transfer lever 523 and the connecting joint of the transfer lever 523 and the steering lever 524 and the support joint of the toggle lever 522 are in a straight line. This dead center is reached in the open position of the opener fitting 1 which is intermediate between the open positions shown in FIGS. 2 and 3 .

From this dead center position, the closure of the shutter causes the toggle lever 522 to oscillate counterclockwise to the state shown in FIG. 2 and ultimately in FIG. 1 . During pivoting, the steering lever 524 is first rotated slightly (see FIG. 2 ), then more and more strongly counterclockwise, after which the piston rod 512 is driven into the cylinder 511 and thus damps the approach of the opener to the furniture body.

If, on the contrary, starting from the dead center position of the lever chain 52, the opener connected to the opener fitting 1 is opened, the toggle lever 522 swings counterclockwise, as shown in FIGS. 3 and 4 . Here too, the steering lever 524 is moved counterclockwise, first slightly and becoming stronger as the end position is approached. As a result, the piston rod 512 is driven into the cylinder 511 again and thus damps the opener in its movement when the open position is approached.

Not only when closing the switch from the dead center position of the lever chain 52, but also when opening the switch, the transmission of the movement of the support lever 25 to the movement of the steering lever 524 or the piston rod 512 is not linear: in the lever chain In the region of the dead center of 52 , the pivoting angle determined by the pivoting of the bearing lever 25 firstly leads to a small movement of the piston rod 512 , wherein the pivoting of the same angle leads to a greater movement of the piston rod 512 when one or the other end position is reached. , and in turn damping, which only works effectively close to the corresponding end position. Effectively, movement in the intermediate opening region remains undamped, even with minimal piston rod 512 movement in each opening angle range.

The double-sided levers of the lever chain 52, ie the toggle lever 522 and, in particular, the steering lever 524 furthermore offers the possibility of adapting the pivot angle of the support bracket 25 to the maximum pivoting of the piston rod 512 from the cylinder 511, thereby enabling The entire travel of the piston rod 512 is utilized as much as possible.

Here, in the exemplary embodiment of FIGS. 1 to 4 , the lever mechanism 20 is embodied as a seven-joint lever mechanism. The embodiment of the lever mechanism 20 is obviously related to the opening and closing movements to be realized, so that different opening and closing movements can be realized. Thus, a multi-armed or single-armed lever mechanism can be used. As a multi-arm lever mechanism, for example, a four-joint assembly is also possible. The lever mechanism 20 may also include additional levers, such as in so-called folding opener fittings, which may be required to control movement of additional opener shutters.

List of reference signs

1 Opener accessories

2 side walls

3 side

4 openings

5 sides

10 Housing

11 side panels

12 frames

13 Rivets

20 Leverage mechanism

21 door support lever

22 Transfer lever

221 Control section

23 Steering lever

24 Control levers

25 Support lever

251 Support arm

252 Manipulator Arm

30 Adjustment device

31 Assembly plate

40 Spring unit

41 Spring set

411 Compression spring

42 Spindle unit

43 Intermediate lever

431 Pressure Roller

44 axes

50 Damping unit

51 Damper

511 Cylinder

512 Piston rod

52 Lever Chain

521 Operating the lever

522 toggle lever

523 Transfer lever

524 Steering lever.

Claims (13)

1. A shutter fitting (1) for furniture, having a lever mechanism (20) provided with a plurality of levers for guiding the shutters of the furniture, and a damping unit (50) having a damper (51) for damping the shutters in an approach end position, wherein the damper (51) is coupled to one of the levers of the lever mechanism (20) by a lever chain (52), characterized in that the lever chain (20) of the damping unit (50) has a dead point, whereby a unidirectional movement of one of the levers of the lever mechanism (20) is converted into a bidirectional movement over the damper (51).

2. Shutter fitting (1) according to claim 1, wherein the lever chain (52) has at least two double-sided levers which are interconnected on a respective one of the lever arms by a transfer lever (523), wherein the dead point is provided by having the connecting joint of the transfer lever (523) in line with the axis of rotation of one of the double-sided levers.

3. Shutter fitting (1) according to claim 2, wherein one of the double-sided levers is a bell-crank lever (522), the other lever arm of which is connected with a lever of a lever mechanism (20).

4. Shutter fitting (1) according to claim 3, wherein the lever of the lever mechanism (20) is connected with a bell-crank lever (522) by means of an operating lever (521).

5. Shutter fitting (1) according to any of claims 1 to 4, wherein the damper (51) is a linear damper with a cylinder (511) and a piston rod (512).

6. Shutter fitting (1) according to claim 5, wherein the damper (51) is swingably fixed on the housing (10) of the shutter fitting (1) by means of a cylinder (511) or a piston rod (512).

7. Shutter fitting (1) according to any of claims 1 to 4, wherein the damper (51) is a rotary damper.

8. Shutter fitting (1) according to any of claims 1 to 7, wherein the lever mechanism (20) forms a seven-joint lever mechanism.

9. Shutter arrangement (1) according to claim 8, wherein the lever mechanism (20) has a support lever (25) which is pivotably fixed on the housing (10), the support lever (25) acting as a lever connected to a lever chain (52).

10. Shutter fitting (1) according to claim 9, wherein the support lever (25) is a double-sided lever and has a support arm (251) and an operating arm (252), wherein the support arm (251) is connected with the other levers of the lever mechanism (20) and the operating arm (252) is connected with a lever chain (52).

11. Shutter fitting (1) according to any of claims 1 to 10, wherein the side plates (11) of the housing (10) have an internal distance of less than 16mm, preferably less than 14 mm.

12. Side wall (2) for a furniture body, in which side wall a shutter fitting (1) according to any one of claims 1 to 11 is inserted or integrated.

13. A piece of furniture having a furniture body and a guided opener, characterized in that the furniture body has at least one side wall (2) according to claim 12.

Images