WO2012076372A1

WO2012076372A1 - Closing and damping device for displaceable furniture parts

Info

Publication number: WO2012076372A1
Application number: PCT/EP2011/071313
Authority: WO
Inventors: Andreas Montecchio; Werner Ihnofeld; Petra Neumüller
Original assignee: Hettich-Heinze Gmbh & Co. Kg
Priority date: 2010-12-10
Filing date: 2011-11-29
Publication date: 2012-06-14
Also published as: SI2649261T1; EP2649261B1; RU2013130347A; ES2637268T3; DE102010061160B4; JP5941061B2; CN103261554A; CA2819278A1; JP2013544996A; PL2649261T3; CN103261554B; RU2569600C2; KR20130140796A; TWI547633B; TW201235542A; BR112013014079A2; EP2649261A1; KR101897599B1; DE102010061160A1

Abstract

The invention relates to a closing and damping device (1) for displaceable furniture parts, comprising a force store (6) mounted on a housing (2, 3) at a first end (61), said store being tensioned during an opening process of a furniture part (15), and the stored force thereof being used in the closing process as a retraction aid into the final closed position, a damping device (7), and a deflection device (5) having a gear (52), a gear rack (51) engaged with the gear (52), and a mounting element (53) rotationally fixedly disposed on the gear (52), to which a second end (62) of the force store (6) can be attached, wherein the deflection device (5) comprises a travel curve modifying the distance of the pivot point of the force store (6) from the center of rotation (521) of the gear (52) during an opening or closing process.

Description

Closing and damping device for movable furniture parts

The present invention relates to a closing and damping device for movable furniture parts, in particular for sliding on a furniture sliding doors according to the preamble of claim 1.

Such closing and damping devices are known in numerous variants from the prior art. Such closing and damping devices are used in particular in sliding door furniture to move a sliding door from a predetermined position automatically in the closed position.

Especially if in such closing and damping devices as a power storage a tension spring is used, due to the linear spring characteristic of the tension spring when opening the movable furniture part, so for example the sliding door, relatively high actuating forces required to bias the spring to a predetermined length ,

In order to minimize the force to be expended when opening the sliding door or to reduce the pitch of the spring characteristic, as long as possible tension springs are used in conventional solutions, which are deflected in a housing. Alternatively, the installation of several cascaded tension and / or compression springs is known.

Object of the present invention is to provide a closing and damping device for movable furniture parts, in which the expended for an opening operation force is even lower or in which the slope of the spring characteristic is further reduced.

This object is achieved with a closing and damping device for movable furniture parts with the features of claim 1 and by a closing and damping device for movable furniture parts with the features of claim 8.

The closing and damping device according to the invention has a force store attached to a housing with a first end, in particular in the form of a tension spring, which is tensioned during the opening process of a movable furniture part and its stored force during the closing process Feeding aid is used in the final closed position for the movable furniture part. Furthermore, the closing and damping device has a damping device, in particular in the form of a pneumatic or hydraulic damping device or the like. The energy storage is coupled to a deflection device with a gear, meshing with the gear rack and a rotatably mounted on the gear holder with its second end. According to the invention, the deflection device on a distance of the pivot point of the gear from the articulation point of the energy accumulator during an opening or closing operation changing flow curve. Now, if a movable furniture part, in particular a sliding door opens relative to the furniture, pushes a driver against a rack, which drives the gear and thereby wound up the energy storage to this flow curve. Due to the shape of the flow curve thereby changes the effective lever arm of the articulation point of a power storage end of the gear. This is compared to conventional ones

Solutions for a opening operation expended force less and in the case of using a tension spring as a force storage, the spring characteristic is flatter, especially even horizontally or slightly falling. Advantageous embodiments of the invention are the subject of the dependent claims.

According to a preferred embodiment, the drainage curve is provided on the holder and in particular designed as a spiral support for the power accumulator, wherein the articulation point of the energy accumulator in a

Closing position of the support is maximally spaced from the pivot point of the gear.

According to a further advantageous embodiment variant, the end of the force accumulator fastened to the holder is designed as a cable or rectilinear piece of wire. Thus, a simpler storage of the energy accumulator can be achieved on the holder, since the length of the rope or straight wire piece is ideally dimensioned so that only the wire or straight wire piece is in contact with the holder.

According to a further advantageous embodiment of the closing and damping device according to the invention, the gear is elliptical and the rack in the plane perpendicular to the axis of rotation of the gear in a region in which they are in a closed position of the closing and damping device gear meshes with the gear, wider than in a region in which the rack meshes with the gear in an open position of the closing and damping device. Such a configuration of the toothed wheel or toothed rack causes the return torque of the energy accumulator in the closed position to be greater than in the open position of the toothed wheel. As a result, as in the winding technique itself, the great force of the tensioned energy storage compensated. By realized in this embodiment combination of winding and rolling of the toothing around a curve results according to the leverage laws a maximum effect in terms of minimizing the force required during the opening process.

According to a further embodiment variant, the closing and damping device is designed such that the energy accumulator is fastened with its first end to the housing and coupled with its second end to the deflecting device, that the energy accumulator always during a opening or closing operation in a straight line between its ends is held. This ensures that during an opening process of the energy storage with progressing opening of the movable furniture part less tense and especially when using a tension spring as a force storage this is less pronounced than the distance to which the rack is moved or pulled out less than at the deflection or winding of the energy storage. Also in this variant of the invention, the force to be expended for an opening operation is lower and in particular the spring characteristic is flatter than in conventional solutions.

Embodiments of the invention of the accompanying drawings will be explained in more detail. Show it:

Figures 1 and 2 are schematic perspective views of a first

3 shows a perspective exploded view of the closing and damping device from FIG. 1, FIG. 4 shows a plan view of the closing and damping device from the preceding figures in a closed position, FIG. 5 shows a plan view of the closing and damping device of the preceding figures in an open position,

FIG. 6 shows a perspective view of a closing and damping device attached to a sliding door furniture,

FIG. 7 shows the closing and damping device of FIG. 6 fastened to a furniture, showing a partially opened sliding door;

FIGS. 8 and 9 are perspective views in a further embodiment of a closing and damping device according to the invention;

FIG. 10 shows the closing and damping device from FIG. 9 in a closed position,

1 1, the closing and damping device of Figure 9 in an open position,

FIG. 12 shows a plan view of a further embodiment variant of a closing and damping device according to the invention in the closed position,

13 shows the closing and damping device from FIG. 12 in an open position, FIG.

14 shows a force profile diagram for comparing a spring characteristic of a conventional closing and damping device and the spring characteristic of a closing and damping device according to the invention, FIG. Figure 15 is a plan view of a further embodiment

a closing and damping device according to the invention in a closed position,

FIG. 16 shows a plan view of the closing and damping device from FIG. 15 in an open position,

Figures 17 and 18 are views of the closing and damping device of Figures 15 and 16 without representation of the housing.

Figure 19 is a plan view of a further embodiment

a closing and damping device according to the invention in a closed position and

Figure 20 is a plan view of the closing and damping device of Figure 19 in an open position.

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 closing and damping device, the energy accumulator, the deflection device 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 figure 3 is designated by the reference numeral 1 a total of a variant of a closing and damping device according to the invention for movable furniture parts, in particular for sliding on a furniture 12 shown in Figures 6 and 7 sliding doors 15. The closing and damping device 1 has, as can also be seen in Figures 1 and 2, a driver 4, in which engages in the assembled state of the closing and damping device 1 on a furniture body 12 arranged on a sliding door 15 activator, in the opening of the sliding door 15, the driver 4 along a guide slot 23, 33 in the housing 2, 3 of the closing and damping device 1 shifts while a fixed to the housing 2, 3 with a first end 61 of energy storage 6, which preferably as a tension spring is trained stretches. This power storage 6, which is tensioned during the opening operation of the movable furniture part, for example, the sliding door 15 shown in Figure 7, and its stored force is used at the other end 62 with a deflection device 5, which consists essentially of a gear 52, a meshing with the gear 52 rack 51 and a rotationally fixed at the other closing end of the sliding door 15 is used as a pulling aid in the final closed position of the sliding door on the gear 52 arranged holder 53 consists.

FIG. 4 shows the closing and damping device 1 in its closed position, FIG. 5 in its open position, after the activator fastened by the sliding door 15 is disengaged from the driver 4. In the closed position shown in Figure 4, the energy accumulator 6 is substantially relaxed.

For this purpose, the holder 53 of the deflection device 5 is in a position in which the attached to the holder 53 end 62 of the energy accumulator 6 can still undergo a deflection. As soon as the sliding door 15 is opened, the driver 4 presses against the rack 51 via a coupling 8.

The front end of the rack 51 is provided with a toothing 51 1, which meshes with the teeth of the gear 52. By the displacement of the rack 51 (in Figures 4 and 5 to the right), the gear 52 and thus rotatably attached to the gear 52 holder 53 is rotated clockwise and thus the energy storage 6 is deflected and tensioned so that the distance of Fulcrum 521 of the gear 52 with respect to the articulation of the energy accumulator 6 changed during the opening process, especially reduced during the opening process. By reducing this distance, the lever arm and thus the expended force for the further tension of the energy accumulator 6 is reduced.

By thus reducing the resistance in opening the sliding door, a smooth transition of the sliding door during the opening movement from a state where the driver 4 is engaged with the activator of the sliding door is given to the released state of the sliding door. In the solutions known from the prior art, there is a sudden drop in the resistance on leaving the activator from the engagement with the driver 4. The holder 53 is attached to the gear 52 in accordance with the embodiment shown in Figures 1 to 4, that the energy storage rests on the holder 53 on a spiral support 531 during the winding. This spiral is oriented so that the distance of the support 531 in the closed position of the gear 52 and the holder 53 of the maximum Fulcrum 521 of the gear 52 is spaced and decreases with progressive winding of the energy accumulator 6 on the holder 53 this distance. The closing and damping device 1 further comprises a damping device 7, which is formed in particular as a pneumatic or hydraulic damping device, wherein a plunger 71 with one end in the damping device housing protrudes tightly and with the other end to the housing 2 or 3 of the closing and damping device 1 is fixed. The housing of the damping device 7 is coupled to the rack 51 and is carried along the displacement of the driver 4 along a guide slot 24, 34 in the housing 2, 3 of the closing and damping device 1. The guide of the rack 51 in the guide slots 24, 34 of the housing 2, 3 of the closing and damping device 1 preferably takes place via two engaging in the guide slots 24, 34 guide pins 513, which are integrally formed or fixed to the rack 51.

The two housing parts 2, 3 of the closing and damping device 1 are preferably screwed together. For this purpose, at the four corners of the preferably rectangular housing 2, 3 threaded openings provided in the screws 1 1 are screwed and so connect the two housing halves 2 and 3 together. Via two further openings 25, 35 in the housing 2, 3, the closing and damping device 1 can be screwed to a piece of furniture.

Figures 6 and 7 show the closing and damping device 1 in a state attached to a furniture. Shown here is a section of a sliding door cabinet with a rail 13, in which a sliding door 15 is slidably mounted on a rolling device 16, wherein the rolling device 16 in the closed position of the sliding door 15 in a locking element 14 at the end of the rail 13 can be fixed.

FIGS. 8 to 11 show a further embodiment variant of a closing and damping device 1 according to the invention. Here, the holder 53 is not provided with a spiral bearing, but substantially formed as a circular disc, from which a retaining tongue 532 extends radially, to which the second end 62 of the force accumulator 6 is attached. This attachment of the force accumulator 6 to the deflection device 5 is preferred rotatably carried out, to a parallel to the axis of rotation 521 of the gear 52 oriented axis of rotation.

As can be seen with reference to FIGS. 10 and 11, during a movement of the closing and damping device from a closed position into the open position when the driver 4 is displaced by means of the coupling piece 8 on the toothed rack 51 meshing with the gearwheel 52, the entire energy store 6 is activated pivoted about the suspension point of the energy storage at the first end 61 of the energy accumulator 6 down. This ensures that the force accumulator 6, which is preferably designed as a tension spring, is not deflected by the entire distance about which the rack 51 is displaced, but by a smaller distance, since the energy accumulator 6 has its second end 62, with which it bears against the holder 53, in particular at the radially outwardly projecting retaining tongue 532 is fixed, a rotational movement and not a Linear- arverschiebung performs.

FIGS. 12 and 13 show a further embodiment variant of the closing and damping device 1 according to the invention. In contrast to the embodiment variant described in FIGS. 1 to 4, the energy accumulator 6 is not completely designed as a tension spring, but in the region of the region in operative connection with the holder 53 as a cable or straight piece of wire 63, which during the movement of the Rack 51 is wound from the closed position into the open position (Figure 13) on the holder 53.

As another alternative shown in FIGS. 19 and 20, the energy accumulator 6 is designed as a band piece 64 in the region of the region 53 which is in operative connection with the holder 53, which, as in the embodiment variant described with reference to FIGS Closed position in the open position (Figure 13) is wound on the holder 53. The piece of tape 64 is formed in particular as a plastic film hinge-like component, but it is also conceivable a fabric tape made of plastic, textile or thin metal. The piece of tape 64 is preferably formed as a separate component which is struck on the one hand on the holding tion 53 of the gear 52 and on the other hand on the energy storage. 6

FIGS. 15 to 18 show yet another advantageous embodiment of the closing and damping device 1 according to the invention. Here is in contrast to the previous embodiments, the gear 52 is not circular, but elliptical shaped. Accordingly, the rack, more precisely provided with the toothing portion 51 1 of the rack 51 is obliquely shaped. That is, the rack 51 is wider in the plane perpendicular to the rotational axis 521 of the gear 52 in a region where it meshes with the gear 52 in a closing position of the closing and damping device 1, than in a region where the rack 51 meshes with the gear 52 in an opening position of the closing and damping device.

FIG. 14 clearly shows a comparison of a force-displacement curve of a conventional closing device, also called self-closing, according to the prior art (characteristic curve A) in comparison to a force-displacement curve of a closing and damping device 1 according to the invention (characteristic curve B). It can clearly be seen in the characteristic curve B that with increasing deflection s the force F required for the deflection decreases steadily, while with a conventional closing and damping device, as represented by the characteristic A, with increasing deflection s of the tension spring also a larger one To spend force F is.

LIST OF REFERENCES

1 closing and damping device

2 housings

3 housing

4 drivers

5 deflection device

6 energy storage

7 damping device

8 clutch

1 1 screw

12 furniture / carcass

13 rail

14 locking element

15 sliding door

16 rolling device

23 guide slot

24 guide slot

25 opening

33 guide slot

34 guide slot

35 opening

51 rack

52 gear

53 bracket

61 end

62 end

63 Rope or straight wire piece

64 piece of tape

71 pestles

51 1 toothing

513 guide pin

521 pivot point / axis

531 supports

532 retaining tongue

A characteristic

B characteristic

F force

s way

Claims

claims

1 . Closing and damping device (1) for movable furniture parts, in particular for on a furniture (12) sliding sliding doors (15), comprising

- One on a housing (2, 3) with a first end (61) attached to power storage (6), the tensioned when opening a furniture part (15) and its stored force during the closing operation of the movable furniture part (15) as Einziehshilfe in the final closed position is being used,

- A damping device (7) and

- A deflection device (5) with a gear (52), a gear (52) meshing rack (51) and a rotatably mounted on the gear (52) arranged holder (53), at the second end (62) of the energy accumulator (6) is attachable,

characterized in that

- The deflection device (5) has a the distance of the articulation point of the energy accumulator (6) from the pivot point (521) of the gear (52) during an opening or closing operation changing flow curve.

2. Closing and damping device according to claim 1, characterized in that the drainage curve on the holder (53) is provided.

3. Closing and damping device according to claim 2, characterized in that the drainage curve as a spiral bearing (531) for the energy accumulator (6) is formed, wherein the articulation point of the energy accumulator (6) in a closed position maximum of the pivot point (521) of the gear (52) is spaced.

4. Closing and damping device according to one of the preceding claims, characterized in that the energy accumulator (6) is designed as a tension spring.

5. closing and damping device according to claim 4, characterized in that on the holder (53) fixed end (62) of the energy accumulator (6) is designed as a wire or straight wire piece (63).

6. Closing and damping device according to claim 4, characterized in that on the holder (53) fixed end (62) of the force accumulator (6) is designed as a piece of tape (64).

7. closing and damping device according to claim 5, characterized in that the length of the band, rope or straight wire piece (63, 64) is dimensioned so that only the band, rope or straight wire piece (63) in contact with the holder (53) stands.

8. closing and damping device according to one of the preceding claims, characterized in that the gear (52) elliptical and the rack (51) in the plane perpendicular to the axis of rotation (521) of the gear (52) in a region in which they in a closing position of the closing and damping device with the gear (52) meshes, is wider than in a region in which the rack (51) in an opening position of the closing and damping device with the gear (52) meshes.

9. Closing and damping device according to the preamble of claim 1, characterized in that the force accumulator (6) with its first end (61) fixed to the housing (2, 3) and with its second end (62) on the deflection device (5) that the energy accumulator (6) is always held in a straight line between its ends (61, 62) during an opening or closing operation.

10. Closing and damping device according to claim 5, characterized in that the energy accumulator (6) on the deflection device (5) is rotatably mounted about an axis of rotation (521) of the gear (52) parallel axis of rotation.