EP1886599A2 - Device for moving one part of a piece of furniture relative to another and furniture - Google Patents

Abstract

A power drive mechanism moves a drawer, hatch or door with respect to a fixed piece of furniture of which it forms a part. The power is transmitted from the motor to the component by a flexible strap (1) with apertures (2) for drive gear teeth at regular intervals. The strap is advanced by two or more gear wheels with matching tooth pegs.

Description

The invention relates to a device according to the preamble of claim 1 and a furniture according to claim 16.

State of the art

Devices with a drive unit for moving furniture parts, with a flexible, elongated transmission element for applying a driving effect on the furniture part to be moved are already known. For example, the shows WO 2006/029894 A1 a device in particular for moving or opening at least one drawer, a flap or a door. As a transmission means, a pull-push cable may be provided which allows a sliding movement of the movable first furniture part. The train-pressure cable, for example, in a. Guide tube be received, which is provided in the region of a guide rail for guiding a drawer.

Purpose and advantages of the invention

The object of the present invention is to provide a device or a furniture in which the transmission element can be accommodated more compactly or used more effectively.

This object is achieved on the basis of the preamble of claim 1 by the claims 1, 2 and 3 or by the claim 16. In the dependent claims advantageous and expedient developments of the invention are shown.

The invention relates to a device for moving a first furniture part relative to a second furniture part with a drive unit by means of which the first furniture part is driven relative to the second furniture part movable, wherein transmission means provided with a flexible elongate transmission element for applying a driving effect on the first furniture part are, so that compressive forces and / or tensile forces for movement of the first furniture part are transferable. An essential aspect of the invention is that the transmission element is provided over essential sections with an aligned in the longitudinal direction at least approximately flat flat portion. The transmission element may be provided over its entire longitudinal extent with a continuous flat portion or in sections or with a plurality of spaced-apart flat sections, possibly on one side or on different sides of the transmission element. The flat portion may for example be configured on two opposite sides of the transmission element. In particular, the flat portion or the flattening may be interrupted by non-flat or planar portions.

With the proposed transmission element, this can be used particularly effectively for applying the drive effect and is also particularly space-saving accommodated.

Furthermore, the transmission element according to the invention can be relatively easily bent, deflected or folded, which is advantageous, for example, for a reciprocating movement of the transmission element when the first furniture part is moved. For example, the part of the transmission element which is not in the extended or pushed-out state can thereby be accommodated in the smallest space.

In addition, it is advantageous that almost no frictional problem or no hooking of sections of the transmission element which are in contact with one another occur due to the transmission element according to the invention, for example in a rolling-up state. In particular, disturbances or wedging between sections of the transmission element, for example in deflection areas or wrapping areas of the transmission element, can thereby be avoided. In known transmission elements for applying compressive or tensile forces for moving the first furniture part, these elements can be wedged together, in particular if they have a profiled, e.g. shows a spiral outer contour.

In principle, various materials are suitable for the particular partially flexible transmission element. For example, the transmission element made of plastic, metal or a combination of these materials.

In addition, the proposed transmission element can be moved by means of different power transmission organs or transmission, such as a pinion, a spindle a worm or screw drive, for example, be driven with angled teeth.

Another aspect of the invention is that the transmission element is formed from a plurality, in particular two element parts, wherein the element parts for the application of the drive effect are brought into contact with each other. An element part can be deposited, in particular, independently of another element part, can be rolled up or unrolled or individually driven or accommodated. This can total. e.g. a spatial separation of the element parts can be realized. In particular, an element part only has to be brought into contact with one or more other element parts for the purpose of applying a drive effect. Because for the application of the drive effect, it may be necessary to provide comparatively high mechanically loadable transmission elements. This can be achieved, for example, by a plurality of separate element parts, which are brought into contact with each other in such a way that this composite can transmit a significantly higher mechanical strength or higher forces than the individual element parts can. It is advantageous that each individual element part can be guided, stored or arranged independently of another.

In principle, it is possible that all element parts are constructed identically or different element parts can be brought into contact with each other. In particular, the element parts are coordinated with one another in such a way that they can be brought into contact with each other in a comparatively simple and space-saving manner, e.g. puzzle-like or without significant gap areas, and also easily separable again.

In principle, it is also conceivable that an element part or even a plurality of element parts are formed differently from other element parts, for example with regard to on shape and / or material properties.

Another essential aspect of the invention is that a winding device is provided for winding and / or unwinding of the transmission element. By a winding device, it can be realized particularly advantageous that the transmission element can be positioned in a confined space or compactly stored or wound or can be extended if necessary by unwinding quickly and without a higher force application. For example, the transmission element with the winding device when retracted or closed first. Furniture part be housed in a storage area in a confined space, possibly in a receiving device, for example, to protect against contamination or damage or sunk in a furniture wall. To move the first furniture part, the transmission element is in particular also unwound by means of the winding device or by another device or extended from the storage position. In this case, only the part of the transmission element is usually handled, which is also necessary for the provision of the drive effect. The remaining, unnecessary section of the transmission element can remain unwound wound in a storage area of the winding device.

Next, a variant is proposed, according to which a transmission is provided, which cooperates in the application of the drive effect with the transmission element, in particular with the flat portion, possibly also additionally with a further portion of the transmission element. Different gear types can be used. The transmission is particularly adapted to the specific nature and shape of the selected transmission element, wherein in particular the flat portion serves to move the transmission element via the drive unit and to roll up and down. In particular, the transmission may have a mating surface, which may cooperate with the flat portion of the transmission element in particular in frictional engagement. Such a transmission may be formed by a friction roller or roller.

In an advantageous embodiment of the subject invention, the transmission element is provided with an engagement contour for engaging the transmission. Thus, a particularly reliable power transmission for the movement of the transmission element and thus of the first furniture part can be realized. As the engagement contour, for example, a tooth or wave profile may be considered, e.g. if desired, can also be self-locking.

It is particularly preferred that the transmission element has at least one opening. With an opening can be achieved in a simple manner and with material savings that the driving effect on the transmission element safely and with simple means is transferable, in particular friction, force and / or positive fit. For example, matched to the openings corresponding counter sections may be present on the driving gear, which can transmit a driving force or a drive torque to the transmission element by engaging in the openings.

It is particularly preferred that stiffening means are provided in the transmission element. By preferably incorporated in the transmission element stiffening means, the stability of the transmission element or its flexibility can be influenced or tuned exactly. Depending on the type or number of stiffening means different degrees of stiffening of the transmission elements can be established. For example, a stiffening wire or stiffening tape can be used as a stiffener, resulting in a sturdy but still to some extent flexible, for example, metal or plastic material.

In a further advantageous embodiment of the subject invention, the transmission element is designed as a band, in particular as a flat band. A band or flat band with comparatively low height is easy to produce, requires comparatively little space or is partly due to the shape advantageous both pressure or train in the direction of the planar extension claimable as well as partially flexible perpendicular thereto. In addition, a flat band can easily be very compact up or unwind or can be stored in the form of a spiral. In particular, it is advantageous if the flat band is formed on both sides at least largely flat. In addition, recesses or other contours can be configured in a flat band without great effort, for example in a central region. In particular, a flat band formed on both sides can be provided with rectangular openings which are regularly spaced from one another. In addition, a flat band can be provided with a recessed portion in the middle, in cross-section U-shaped, wherein at the bottom of the U-shape an opening is formed. In addition, a stiffening means or, for example, a stiffening wire or a stiffening band can be incorporated in a flat strip.

In an alternative advantageous embodiment of the subject invention, the transmission element is designed as a cable with a flattened outer portion. A cable with flattening areas can be produced, for example, particularly simply from a cross-sectionally approximately round elongated element which is available in a variety of configurations as a commercially available material in that a flattened outer section is formed thereon. The flattened outer section can serve in particular for applying the driving force from the drive unit to the transmission element.

It is particularly preferred if deflection means for deflecting the transmission element are present. Thus, the transmission element can be spatially oriented in different directions, in particular be positioned or moved. For example, the transfer element can be deflected during winding or unwinding along a deflection in a desired or arbitrary direction.

Preferably, the transmission element has a substantially rigid portion, which is formed from a plurality of flexible parts in contact with each other. The transmission element may preferably be stiffened in particular via one end section or designed to be much less flexible than other areas, for example, to enable effective power transmission from the end portion of the transmission element to the first movable furniture part or to avoid kinking under load. It is advantageous if this rigid portion is formed by flexible parts of the transmission element, so that the winding or unwinding of the single strands can work well, but also a e.g. rope-like wound from the single strands section can be relatively stiff, in particular a not necessarily wound up or unwound tail of the transmission element. For example, it is also conceivable that comparatively short sections distributed over the length of the transmission element are stiffened in such a way or are almost completely flexible between them in order, for example, to be completely flexible. to obtain the desired overall stability of the transmission element.

Further, it is advantageous that the transmission element comprises at least two separate element parts, which in particular according to the zipper principle can be brought into contact with each other. By means of such a coupling system, element parts located separately from one another can be firmly transferred to one another in a functional unit or be returned from this without having to forego a certain flexibility of the fixedly assembled element parts. In principle, the element parts can also be combined and separated again in a different way, for example by twisting, wrapping, mutual clamping or the like. With a corresponding coupling system or element, the separated element parts can be brought together exactly positioned and latched or unlatched together. Preferably, such a coupling or merging element is designed as part of the transmission, which also the driving force from the drive unit to the transmission element transfers. When using a transmission element of a plurality of element parts, it is advantageous if the winding device can open or unwind each of the element parts, so that the separate element parts require relatively little space.

In a further preferred embodiment of the subject invention, the transmission element comprises at least two bands, each having at least on one side formed engaging means. Such a band can be relatively compact accommodate and can be brought about the engagement means with the engagement means of the other band in engagement to form a solid composite of the two bands. For this purpose, it may be necessary, for example, only on one side of a flat band, to provide corresponding engagement means, wherein the other outwardly directed side can form the flat portion, via which in particular the transmission of the driving force can take place on the transmission element, usually in both bands or above both flat sections.

It is further proposed that the transmission element is formed from at least two flexible bands, each with teeth formed on one side, wherein the teeth of one band are matched to the teeth of the other band so that the two bands are engageable with each other via the teeth , Thus, with relatively simple means, a band, in particular a flat band with a corresponding further band or flat band to a transmission unit or to a transmission element can be assembled, which can transmit relatively large forces, in particular in the longitudinal direction of the bands and yet flexible. In order to make the band as flat or space-saving, the teeth may be designed in particular in the low profile, e.g. approximately equal in height to the strip thickness at which the teeth are e.g. are formed on one side.

Further, it is advantageous that the plurality of element parts, at least in sections, are each separately wound up or unwound. Thus, a comparatively stable transmission element can be constructed from a plurality of individual element parts, which for reasons of space can advantageously be accommodated individually. In particular, each of the element parts can be wound up or unwound separately. In general, all element parts are wound individually and when unrolling all together, so that this composite can transmit tensile or compressive forces on the first furniture part via the drive unit.

The invention is also based on a piece of furniture with a first furniture part, which is driven relative to a second furniture part movable, in particular with a driven by a drive unit movable drawer, flap or door, wherein in the case of the drawer a guide unit for Guiding the drawer to a furniture body is present. According to the invention the furniture is equipped with one of the aforementioned devices. Thus, the above advantages can be achieved with a corresponding furniture.

figure description

In the drawing figures, various embodiments of the invention are shown in highly schematic form and described in detail, with further advantages and features.

Figur 1

einen Ausschnitt eines als Flachband ausgebildeten erfindungsgemäßen Übertragungselementes in Draufsicht und im Querschnitt,

Figur 2 und 3

zwei weitere Ausführungsformen eines jeweils als Flachband ausgebildeten Übertragungselementes im Querschnitt,

Figur 4

einen Ausschnitt eines erfindungsgemäßen Übertragungselementes in Draufsicht,

Figur 5

einen Ausschnitt eines erfindungsgemäßen runden Übertragungselementes in Draufsicht und im Querschnitt,

Figur 6

einen Ausschnitt eines weiteren Übertragungselementes in Seitenansicht und im Querschnitt,

Figur 7

einen Ausschnitt einer erfindungsgemäßen Anordnung in perspektivischer Ansicht stark schematisiert mit einem Elektromotor und einer daran angeordneten Getriebeeinheit im Zusammenspiel mit zwei miteinander in Anlage gebrachten Übertragungselementen,

Figur 8

einen Ausschnitt eines Längsschnitts durch die beiden in Anlage befindlichen Elementteile gemäß der Linie B-B in Figur 7,

Figur 9

einen Querschnitt gemäß der Linie A-A durch die in Figur 8 gezeigte Anordnung und

Figur 10

eine stark schematisierte weitere Anordnung mit einer Antriebs- und Getriebeeinheit und einem von diesen auf- bzw. abwickelbaren Übertragungselement.

In detail shows:

FIG. 1

a detail of a ribbon formed as a transmission element according to the invention in plan view and in cross section,

FIGS. 2 and 3

two further embodiments of each formed as a flat band transmission element in cross section,

FIG. 4

a detail of a transmission element according to the invention in plan view,

FIG. 5

a detail of a round transmission element according to the invention in plan view and in cross section,

FIG. 6

a detail of another transmission element in side view and in cross section,

FIG. 7

a section of an inventive arrangement in a perspective view highly schematic with an electric motor and a gear unit arranged thereon in interaction with two brought into contact with each other transmission elements,

FIG. 8

a detail of a longitudinal section through the two abutting element parts according to the line BB in Figure 7,

FIG. 9

a cross section along the line AA through the arrangement shown in Figure 8 and

FIG. 10

a highly schematic further arrangement with a drive and gear unit and one of these up or unwound transmission element.

FIG. 1 shows a comparatively simply constructed transmission element in the cutout in the form of a flat strip 1 with a substantially rectangular cross section. In particular, for the interaction with a drive unit or a gear unit, the flat band 1 regularly spaced rectangular openings 2, which are formed approximately centrally in the flat belt 1. As a cooperating with the flat belt 1 gear, for example, a gear may be provided (not shown), which shows on the outer periphery meshing teeth that can fit into the rectangular openings 2.

FIG. 2 shows, in a schematic cross-section, a further flat strip 3, which is similar to the flat strip 1. In the flat band 3 are two approximately parallel stiffening wires 5 in the longitudinal direction of the flat strip. 3 embedded. The flat strip 3 is exemplified by a U-shaped cross-section, wherein openings 4 are formed in the lower region between the two U-legs for in particular the engagement of a transmission, not shown.

A further alternative embodiment of the transmission element according to the invention in the form of a flat strip 6 is shown in FIG. 3 in cross section. The flat belt 6 in turn has openings 7 for in particular the engagement of a transmission, not shown, wherein one of the openings 7 can be seen, which is configured in a raised central region of the flat belt 6. Outside the side of the flat strip 6 stiffening elements 8 are configured. A lying in Figure 3 bottom flat side 9 of the flat belt 6 is formed slightly curved inwards.

A further alternative embodiment of a flat strip 10 is shown in FIG. 4 in sections in a plan view. The flat strip 10 comprises a stiffening wire 11, which is continuously attached to it or accommodated therein, which is indicated by hatching. The two narrow sides of the flat strip 10 are profiled and provided in the example shown in plan view with rectangular elevations or indentations 10 a, which are configured in a regular arrangement and in particular a gear can engage.

A further exemplary embodiment of a transmission element according to the invention in a partial view in plan view or in cross section is shown in FIG. In the formed as a round cable 12 transmission element rectangular openings 13 evenly spaced apart approximately centrally in the round cable 12 are formed in particular for the engagement of a transmission.

FIG. 6 shows in highly schematic form a tension-compression cable 14 which has sections 15 flattened on one side has, which are interrupted by regularly spaced semicircular channel-shaped depressions 16. The depressions 16 of the tension-pressure cable 14 are aligned transversely to the longitudinal extension of the tension-pressure cable 14 and can serve, for example, to engage a transmission portion.

In principle, a plurality of different shapes or configurations of the transmission elements are conceivable. The flat strips 1, 3, 6, 10 and the train-pressure cable 14 may consist of different materials such as plastic, metal or of a composite material.

Another highly schematically shown arrangement with an electric motor 17 for driving a toothed pinion 18 and a meshing with this gear 19 is shown in FIG 7. In Figure 7, various parts are not shown, for example, a winding and unwinding and guide means for the bands 25, 26, Fasteners, supply lines for the electric motor 17 or, for example, adjacent furniture parts. At the pinion 18 and the gear 19, an axially inwardly offset in diameter friction wheel 20 and 21 is formed. Between slightly spaced outer circumferential sides of the friction wheels 20 and 21, a double belt 22 is made by the rotation of the friction wheels 20 and 21 and reciprocated. The double band 22 is shown only partially or partially cut away. In this case, an upper flat side 23 and a lower flat side 24.des the double belt 22 comes into contact with the circumferential ring-shaped outer sides of the friction wheels 20 and 21. The flat side 23 forms one side of the toothed belt 25, on the other side teeth 25a are formed. In the same way, the toothed belt 26 is constructed, with the flat side 24 on one side and teeth 26a on the other side. The toothed belts 25, 26 can be meshed with each other or positively connected with their teeth having the teeth 25a and 26a similar to the Reifwerschlussprinzip. For this purpose, the teeth 25a, 26a in their Shape or matched in their dimensions to each other, for example, the same tooth height or engageable with each other conical flanks with rounded edges, such as shown in Figure 9, have.

Figure 8 shows a detail of a sectional view along the line BB in Figure 7 through the double belt 22 with toothed belts 25 and 26 meshed with each other, Figure 8 is only a sectional plane parallel to the flat sides 23, 24 of the toothed belts 25, 26 through the teeth 25a and teeth 26a shows. The teeth 25a of the flat strip 25 are offset in its longitudinal and transverse directions, as are the teeth 26a of the toothed belt 26th

The friction wheel 20 can be rotated by the electric motor 17 in the direction P1, for example, or thus the friction wheel 21 in the opposite direction of rotation, so that according to Figure 7, formed in the zipper double belt 22 from the toothed belts 25 and.26 forward in the direction P2 is moved, and for example, a drawer can move forward in the extended position. If the drawer, not shown, are moved from the extended position back into an inserted position, the direction of rotation of the friction wheel 20 and the friction wheel 21 must be reversed. As a result, the double belt 22 is also moved back against the direction of the arrow P2 and wound up by means of a winding device (not shown).

FIG. 7 also shows the partially wound sections of the toothed belt 25 and 26 which are not accommodated as a double belt 22. For example, the toothed belts 25 and 26 are spirally wound and thus arranged in a space-saving manner.

Figure 10 shows a highly schematic alternative embodiment for winding or unwinding a toothed belt 27 with only schematically in a partial region formed thereon teeth 27a. The toothed belt 27 is designed, for example, as a steel strip with embossments for the formation of the teeth 27a. Here, for example, via a motor 28 and a spindle or screw 29, which is in engagement with the toothed belt 27, the toothed belt 27 up or unwound.

An arrangement according to the invention can be used for example for a drawer, which, for example, from the WO 2006/029894 A1 is known. For example, a drive unit may be fastened to the furniture carcass, wherein a transmission element may be fastened and guided, for example, to a drawer rail or to a drawer bottom or a drawer rear wall or at least partly wound up with a winding device on the furniture carcass.

LIST OF REFERENCE NUMBERS

1

ribbon

2

rectangular opening

3

ribbon

4

opening

5

stiffening wire

6

ribbon

7

opening

8th

stiffener

9

flat side

10th

ribbon

10a

indentation

11

stiffening wire

12

round cable

13

rectangular openings

14

Train-pressure cable.

15

section

16

deepening

17

electric motor

18

pinions

19

gear

20

friction wheel

21

friction wheel

22

dual band

23

flat side

24

flat side

25

toothed belt

25a

tooth

26

toothed belt

26a

tooth

27

toothed belt

27a

tooth

28

engine

29

screw

Claims (16)

Device for moving a first furniture part relative to a second furniture part with a drive unit (17) by means of which the first furniture part is driven relative to the second furniture part movable, wherein transmission means are provided with a flexible elongated transmission element for applying a driving effect on the first furniture part, so in that pressure forces and / or tensile forces for the movement of the first furniture part are transferable, characterized in that the transfer element (1, 3, 6, 10, 14, 22, 27) is provided with substantial sections having a longitudinal extent aligned at least approximately flat flat portion. Device according to the preamble of claim 1, in particular according to claim 1, characterized in that the transmission element (22) consists of several, in particular two element parts (25, 26) is formed, wherein the element parts (25, 26) for applying the drive effect with each other be planted. Device according to the preamble of claim 1, in particular according to claim 1 or 2, characterized in that a winding device for winding and / or unwinding of the transmission element (1, 3, 6, 10, 12, 14, 22, 27) is provided. Device according to one of the preceding claims, characterized in that a gear (20, 21) is provided, which cooperates with the transmission element (22) in particular with the flat portion (25a, 26a) when applying the drive effect. Device according to one of the preceding claims, characterized in that the transmission element (1, 3, 6, 10, 12, 14, 27) is provided with an engagement contour for engagement of the transmission. Device according to one of the preceding claims, characterized in that the transmission element (1, 3, 6, 12) has at least one opening (2, 4, 7, 13). Device according to one of the preceding claims, characterized in that stiffening means (5, 8, 11) are provided in the transmission element (3, 6, 10). Device according to one of the preceding claims, characterized in that the transmission element as a band (1, 3, 10, 22) is formed. Device according to one of the preceding claims, characterized in that the transmission element is designed as a cable (14) with a flattened outer portion (15). Device according to one of the preceding claims, characterized in that deflection means for deflecting the transmission element (1, 3, 6, 10, 12, 14, 22, 27) are present. Device according to one of the preceding claims, characterized in that the transmission element has a substantially rigid portion, which is formed of a plurality of abutting flexible parts. Device according to one of the preceding claims, characterized in that the transmission element comprises at least two mutually separate element parts (25, 26) which in particular can be brought into abutment with each other according to the zipper principle. Device according to one of the preceding claims, characterized in that the transmission element comprises at least two bands (25, 26) which each have on at least one side formed engagement means (25a, 26a). Device according to one of the preceding claims, characterized in that the transmission element of at least two flexible bands (25, 26) each formed on one side teeth (25a, 26a) is formed, wherein the teeth (25a) of a band (25) the teeth (26a) of the respective other band (26) are tuned so that the two bands (25, 26) via the teeth (25a, 26a) are engageable with each other. Device according to one of the preceding claims, characterized in that the plurality of element parts (25, 26) are at least partially separately wound up or unwound. Furniture with a first furniture part, which is driven relative to a second furniture part movable, in particular with a drawer, flap or door, characterized in that a device according to one of the preceding claims is provided.

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