EP2974623A1 - Support device adjustable with an electric motor - Google Patents

Abstract

An electromotively adjustable support means for supporting a padding of a seat and / or reclining furniture, in particular a mattress of a bed, has at least two relatively adjustable support members 6, 8, wherein at least one support member 8 for adjusting the same is associated with an adjusting, which with a Electric motor of a drive unit 18 is in drive connection. According to the invention, the adjusting member is a pivotable under the pulling action of a traction cable 110 of a Bowden cable pivot lever 102 which is formed and is in operative connection with the pull cable 110 that the effective for adjusting the support member 8 lever arm during an adjustment from an undistorted starting position in a maximum lengthened adjusted end position of the adjustment movement.

Description

The invention relates to an electromotive adjustable support means referred to in the preamble of claim 1 for a padding of a seat and / or reclining furniture, in particular a mattress of a bed.

Such support means are well known, for example in the form of slatted frames.

To adjust, for example, slatted frames so-called double drives are known, which have a separate, connectable with the slatted frame component housing in which two adjusting units are added, one of which is used for example for adjusting a back support member and the other for adjusting a leg support part of the slatted frame , The adjusting units are formed in the known double drives as a spindle drive, wherein the drive technology coupling to a support member to be adjusted via an articulation lever, which is rotatably connected to a pivot shaft, which is assigned to the supporting member to be adjusted. To adjust the support member, the spindle nut of the spindle drive presses against the articulation lever, so that the pivot shaft and thus the support member pivots. Such double drives are for example by EP 0372032 A1 and DE 3842078 A1 known.

By DE 10017989 C2 and DE 10017979 C2 is in each case designed as a double drive furniture drive, in which each adjustment has an electric motor driven winding device for a rope, belt or chain-shaped traction means which is connected in the manner of a pulley with a pivot lever which is rotatably connected to a pivot shaft, in turn is in operative connection with a support member to be adjusted.

By a similar principle of action working furniture drives are also by DE 3409223 C2 . DE 19843259 C1 and EP 1020171 A1 known.

According to different principles of action working double drives are also by DE 197292812 A1 . DE 29811566 U1 and DE 29714746 U1 known.

By DE 3900384 an adjustable slatted base is known, in which the adjustment of a head or leg support part of the slatted frame takes place by means of a pneumatic cylinder.

By DE 29602947 U1 is a Gasfederverstellbeschlag known for slatted frames, wherein a cable is provided for actuating the gas spring.

By DE 3103922 A1 a slatted frame is known, in which the adjustment of, for example, an upper body support member via a windshield wiper motor and a scissors takes place.

By EP 1294255 B1 a double drive is known in which the power transmission from a linearly movable drive element to a pivot lever, which is in operative connection with a standing with a support member to be adjusted pivotally connected pivot shaft, via a pulley. Similar furniture drives are also through FR 2727296 . DE 3409223 C2 . DE 19843259 C1 . GB 2334435 and US 5528948 known.

In addition, slatted frames are known in which the adjusting device for adjusting a support member is partially or completely integrated into a main body of the slatted frame. In this sense shows and describes DE 19962541 C2 (corresponding EP 1239755 B1 . JP 2001-546280 and US 6754922 ) An electromotive adjustable support means having a mutually parallel longitudinal beams exhibiting first support member which is formed in the known from the document support means by a stationary central support member. The known support means further comprises further support members which are adjustable by drive means relative to the first support member. In the support device known from the publication, a first longitudinal spar of the first support member for receiving the drive means is formed as a hollow profile, wherein the entire drive is received including a drive motor in the hollow longitudinal spar. Due to this, the drive motor does not protrude beyond the same in the vertical direction of the first longitudinal beam, so that the support device known from the publication has an extremely low overall height. A similar support device is also available DE 10046751 (corresponding EP 1239754 B1 . JP 2001-547994 and US 6961971 ) known.

By WO 96/29970 a motorized support means for a mattress of a bed is known, which has a plurality of longitudinally of the support means consecutive support members which are pivotable by drive means relative to a first support member. The support members are mounted on an outer frame whose profile height is substantially greater than the profile height of the support members. In the known from the document support means are parts of outer frame formed as a hollow profile, wherein in the hollow profile parts of the drive means for Vestellung the support members are added relative to each other. The drive motor is disposed on an inner side of a part of the outer frame.

By DE 69507158 T2 (corresponding EP 0788325 B1 ) a motor-adjustable support means for a mattress of a bed is known, which has a longitudinal spar exhibiting a first support member and at least a second support member which is pivotable by drive means relative to the first support member. In the known support device of the drive motor is arranged outside the base of the support means and fixed to a frame-like extension of the first support member.

By EP 1633219 B1 a slatted frame is known, in which parts of the adjusting device are accommodated in a hollow longitudinal spar, while the drive motor is arranged outside the longitudinal spar and is in driving connection through a recess with the parts of the adjusting device accommodated in the longitudinal spar.

By WO 2008/113401 For example, a furniture drive provided for adjusting a drawer relative to a body of a cabinet is known in which the adjustment of the drawer takes place via a flexible toothed rack which is in engagement with a toothed wheel.

By DE 10 2008 028586 A1 is a slatted frame with integrated adjusting known, in which the power transmission of drive motors of the adjustment takes place on the support members to be adjusted via traction cables, which are guided over deflections.

Electromotive adjustable slatted frames usually have a Verstellbeschlag on it serves to transmit the adjustment of an electric motor or more electric motors on the mutually adjustable support members of the slatted base. For mounting an electric motor adjustable slatted base, for example, a double drive is mounted on the slatted frame so that its adjusting elements come into operative connection with the adjustment fitting of the slatted frame.

The invention has for its object to provide an electric motor adjustable support means referred to in the preamble of claim 1 species, which has a low height and is suitable for applying large displacement forces.

This object is achieved by the invention defined in claim 1.

The invention is based on the finding that it can be advantageous in the adjustment of support means when the adjusting force exerted on an adjusting member to be adjusted during the adjusting movement changes during the adjustment. If the support device is, for example, a slatted frame on which a mattress rests, the mattress is resiliently deformed during the adjustment of a back support part of the slatted frame. With increasing deformation of the mattress, the restoring forces, which seek to restore the mattress in its original form, increase considerably. This is especially true when the mattress is a so-called box spring mattress. As a result, these restoring forces must be overcome by the electric motor drive unit. Since the restoring forces increase towards the end of the adjustment movement, that is to say with the mattress deformed to a maximum extent, it may accordingly be desirable to have the adjustment forces in particular for Increase the end of the adjustment movement.

On this basis, the invention is based on the idea to design the support means so that a change in the adjusting force during the adjustment is possible.

The invention provides that the adjusting member is a pivotable under the pulling action of a traction cable of a Bowden cable pivot lever which is formed and is in operative connection with the pull rope, that the length of the effective for adjusting the support member lever arm during an adjustment between an unobstructed Initial position and a maximum end position of the adjustment changed.

In this way, it is possible, for example and in particular, to apply a greater adjustment force in the region of a maximally adjusted end position than in the region of an unadjusted initial position. In this way, for example, even with box spring mattresses under the additional load of a person resting on the mattress a maximum end position of the adjustment can be achieved.

The basic principle according to the invention can be realized in an advantageous manner, for example, by virtue of the fact that the pivoting lever is designed to be pivotable with the cam body connected to the supporting part to be adjusted, which rolls on an abutment during the adjusting movement. Here, the length of the effective for adjusting the support member lever arm is defined by the distance of the pivot axis about which the pivot lever is pivotally connected to the support member to be adjusted, to the point where the cam rests on the support. By appropriate shaping of the cam can thus any suitable Course of the adjusting force can be achieved during the adjustment.

The support per se according to the invention can in principle again be designed as a cam body. To make the support particularly simple and inexpensive, provides an advantageous development of the invention, that the support is designed as a substantially flat surface.

Another advantageous embodiment provides that the support is formed on a connected to an outer frame of the support means tab. For example, and in particular, the tab may be formed as an angle, one leg of which is connected to the outer frame, for example by screwing, and the other leg forms the support.

Instead of forming the pivot lever itself as a cam, the basic principle of the invention can be embodied in an advantageous manner by the fact that the traction cable of the Bowden cable is guided around a cam body which is in pivot drive connection with the pivot lever. In this embodiment, the effective for adjusting the support member lever arm is defined by the cam body, which in turn can be shaped so that there is a desired course of the adjusting force and thus the Verstelldrehmomentes during the adjustment.

In the aforementioned embodiment, the pivot drive connection between the cam and the pivot lever can be made, for example via a transmission. To make the structure particularly simple and inexpensive, provides an advantageous development that the cam body is rotatably connected to the pivot lever.

A particularly advantageous development sees before that the cam body is formed integrally with the pivot lever. In this embodiment, the pivot lever and the cam body may be formed, for example, by an injection molded part made of plastic.

Another advantageous embodiment of the invention provides that the cam body facing the end of the sheath of the Bowden cable is held on a holding part which is pivotally mounted about a pivot axis such that the sheath tracks changes in direction of the traction cable in the circumferential direction of the pivot axis. Changes during the adjustment due to the shape of the cam body, the direction of the pull rope, it is prevented due to the movable mounting of the holding member that the pull rope loads the casing in the radial direction and thereby damaged. Since the sheath tracks changes in direction of the pull rope, the sheath dodges as soon as the pull rope exerts a force acting in the radial direction on the sheath. In this way, damage to the jacket is reliably avoided.

A development of the aforementioned embodiment provides that the pivot axis of the holding member is parallel to the pivot axis of the pivot lever.

The invention will be explained in more detail by means of embodiments with reference to the accompanying drawings. All described, illustrated in the drawings and claimed in the claims characteristics taken alone and in any suitable combination with each other the subject of the invention, regardless of their combination in the claims and their dependency and regardless of their description or

Representation in the drawing.

Fig. 1:

in einer Perspektivansicht ein Ausführungsbeispiel einer elektromotorisch verstellbaren Stützeinrichtung in Form eines Lattenrostes in einer unverstellten Position,

Fig. 2:

in gleicher Darstellung wie Fig. 1 den Lattenrost gemäß Fig. 1, wobei der Übersichtlichkeit halber Stützteile des Lattenrostes weggelassen sind,

Fig. 3

in gleicher Darstellung wie Fig. 1 einen Montagerahmen der Stützeinrichtung gemäß Fig. 1,

Fig. 4

in gleicher Darstellung wie Fig. 3 den Montagerahmen gemäß Fig. 3 zusammen mit einen daran schwenkbar gelagerten Stützteil,

Fig. 5

in einer Perspektivdarstellung eine Antriebseinheit des Lattenrostes gemäß Fig. 1, wobei das Gehäuse der Antriebseinheit aus Darstellungsgründen offen gezeigt und der Übersichtlichkeit halber Bestandteile der Antriebseinheit weggelassen sind,

Fig. 6

in gleicher Darstellung wie Fig. 5, jedoch in vergrößertem Maßstab die Antriebseinheit gemäß Fig. 5,

Fig. 7A- Fig. 7E

jeweils in einer Perspektivansicht Ein-zelheiten eines Verstellorganes des Lattenrostes gemäß Fig. 1 in verschiedenen Verstellpositionen bzw. kinematischen Phasen,

Fig. 8

in einer Perspektivansicht und in gegenüber Fig. 7 vergrößertem Maßstab ein Anschlagselement des Lattenrostes gemäß Fig. 1,

Fig. 9

in gleicher Darstellung wie Fig. 8 das Anschlagselement gemäß Fig. 8 in Kombination mit einem Aufstellhebel,

Fig. 10

in gleicher Darstellung wie Fig. 9 das Anschlagselement und den Aufstellhebel gemäß Fig. 9 in einer anderen kinenmatischen Phase,

Fig. 11A- Fig. 11E

jeweils in einer anderen Perspektiv-ansicht den Montagerahmen gemäß Fig. 3 in unterschiedlichen Verstellpositionen bzw. kinematischen Phasen,

Fig. 12A- Fig. 12D

in gleicher Darstellung wie Fig. 11, jedoch in geringfügig verkleinertem Maßstab den Montagerahmen gemäß Fig. 3 in unterschiedlichen Verstellpositionen bzw. kinematischen Phasen in Kombination mit einem zu verstellenden Stützteil,

Fig. 13

in einer Perspektivdarstellung den ersten Aufstellhebel für sich genommen und

Fig. 14

in einer Perspektivdarstellung das Anschlagselement für sich genommen,

Fig. 15

in einer Perspektivdarstellung ein Ausführungsbeispiel einer erfindungsgemäßen Stützeinrichtung in einer teilweise verstellten Lage,

Fig. 16

in gleicher Darstellung wie in Fig. 15 die Stützeinrichtung gemäß Fig. 16 in einer Endlage der Verstellbewegung,

Fig. 17

in vergrößertem Maßstab ein Detail der Stützeinrichtung gemäß Fig. 15 im Bereich eines Verstellorganes in Form eines Schwenkhebels,

Fig. 18

eine Perspektivansicht von oben in Fig. 17 des Schwenkhebels gemäß Fig. 17,

Fig. 19

eine Perspektivansicht von unten in Fig. 17 auf den Schwenkhebel gemäß Fig. 17,

Fig. 20

eine Perspektivansicht des Schwenkhebels gemäß Fig. 17 im Zusammenwirken mit einem Oberkörperstützteil und einem Auflager,

Fig. 21

in zu Fig. 17 ähnlicher Darstellung, jedoch in vergrößertem Maßstab eine Ansicht des Schwenkhebels zur Verdeutlichung des sich während des Verschwenkens des Schwenkhebels während der Verstellbewegung ändernden Länge des wirksamen Hebelarmes,

Fig. 22

in einer leicht perspektivischen Ansicht ein zweites Ausführungsbeispiel einer erfindungsgemäßen Stützeinrichtung in einer unverstellten Ausgangslage eines Oberkörperstützteiles,

Fig. 23

in zu Fig. 22 ähnlicher Darstellung das Ausführungsbeispiel gemäß Fig. 22, wobei das Oberkörperstützteil in einer teilweise verstellten Verstelllage gezeigt ist,

Fig. 24

in zu Fig. 22 ähnlicher Darstellung das Ausführungsbeispiel gemäß Fig. 22, wobei das Oberkörperstützteil in seiner maximal verstellten Endlage der Verstellbewegung dargestellt ist,

Fig. 25

in gegenüber Fig. 24 vergrößertem Maßstab eine Einzelheit aus Fig. 24 im Bereich eines Schwenkhebels,

Fig. 26

in gegenüber Fig. 25 vergrößertem Maßstab eine Einzelheit aus Fig. 25 im Bereich eines Halteteiles für einen Bowdenzug,

Fig. 27

eine Perspektivansicht des Schwenkhebels in Kombination mit dem Halteteil und

Fig. 28

eine Perspektivansicht des Schwenkhebels gemäß Fig. 27 aus einer anderen Perspektive.

It shows:

Fig. 1:

3 shows a perspective view of an embodiment of an electromotively adjustable support device in the form of a slatted frame in an unadjusted position;

Fig. 2:

in the same representation as Fig. 1 according to the slatted frame Fig. 1 , wherein the sake of clarity support parts of the slatted frame are omitted,

Fig. 3

in the same representation as Fig. 1 a mounting frame of the support device according to Fig. 1 .

Fig. 4

in the same representation as Fig. 3 according to the mounting frame Fig. 3 together with a pivotally mounted support member,

Fig. 5

in a perspective view of a drive unit of the slatted base according to Fig. 1 wherein the housing of the drive unit is shown open for illustrative purposes and omitted components of the drive unit for clarity,

Fig. 6

in the same representation as Fig. 5 , but on an enlarged scale the drive unit according to Fig. 5 .

Figs. 7A-7E

In each case in a perspective view Einzzheiten an adjusting the slatted base according to Fig. 1 in different adjustment positions or kinematic phases,

Fig. 8

in a perspective view and opposite Fig. 7 enlarged scale a stop element of the slatted base according to Fig. 1 .

Fig. 9

in the same representation as Fig. 8 the stop element according to Fig. 8 in combination with a set-up lever,

Fig. 10

in the same representation as Fig. 9 the stop element and the set-up lever according to Fig. 9 in another kinematic phase,

Figs. 11A-11E

each in a different perspective view of the mounting frame according to Fig. 3 in different adjustment positions or kinematic phases,

Figs. 12A-12D

in the same representation as Fig. 11 , but in a slightly reduced scale according to the mounting frame Fig. 3 in different adjustment positions or kinematic phases in combination with a supporting part to be adjusted,

Fig. 13

taken in a perspective view of the first set-up lever and taken

Fig. 14

taken in a perspective view of the stop element taken,

Fig. 15

in a perspective view of an embodiment of a support device according to the invention in a partially adjusted position,

Fig. 16

in the same representation as in Fig. 15 the support device according to Fig. 16 in an end position of the adjustment movement,

Fig. 17

on a larger scale a detail of Supporting device according to Fig. 15 in the region of an adjusting member in the form of a pivoting lever,

Fig. 18

a perspective view from the top in Fig. 17 of the pivot lever according to Fig. 17 .

Fig. 19

a perspective view from below in Fig. 17 according to the pivot lever Fig. 17 .

Fig. 20

a perspective view of the pivot lever according to Fig. 17 in cooperation with an upper body support member and a support,

Fig. 21

in to Fig. 17 similar representation, but on an enlarged scale a view of the pivot lever to illustrate the changing during the pivoting of the pivot lever during the adjustment length of the effective lever arm,

Fig. 22

in a slightly perspective view of a second embodiment of a support device according to the invention in an undistorted starting position of an upper body support member,

Fig. 23

in to Fig. 22 similar representation of the embodiment according to Fig. 22 wherein the upper body support member is shown in a partially adjusted adjustment position,

Fig. 24

in to Fig. 22 similar representation of the embodiment according to Fig. 22 wherein the upper body support member is shown in its maximally adjusted end position of the adjustment movement,

Fig. 25

in opposite Fig. 24 enlarged scale a detail Fig. 24 in the region of a pivoting lever,

Fig. 26

in opposite Fig. 25 enlarged detail of a detail Fig. 25 in the area of a holding part for a Bowden cable,

Fig. 27

a perspective view of the pivot lever in combination with the holding part and

Fig. 28

a perspective view of the pivot lever according to Fig. 27 from a different perspective.

Based on FIGS. 1 to 14 is first explained below the basic operation of an electromotive adjustable support means, in which the adjustment is effected via Bowden cables.

In Fig. 1 is a perspective view of an embodiment of an electric motor adjustable support means for upholstering a sitting and / or lying furniture, in particular a mattress of a bed, shown, wherein the support means is formed in this embodiment as a slatted frame 2. For clarity, resilient slats of the slatted base 2, for example, spring wood, not shown in the drawing. However, the design and attachment of such resilient slats is well known to the skilled person and is therefore not explained in detail.

The slatted frame 2 has a base body 4, are arranged on the relatively adjustable support members. In the illustrated embodiment, the support members on a stationary central support member 6, with one end pivotally and about a horizontal pivot axis pivotally an upper body support member 8 is connected. With the upper body support member 8 facing away from the end of the central support member 6 pivotally about a horizontal pivot axis, a leg support member 10 is pivotally connected to the central support member 6 opposite end pivotally and about a horizontal pivot axis pivotally a calf support member 12 is connected.

In the illustrated embodiment, the main body of the slatted frame 4 has an outer frame 14.

The support members 6 to 12 are connected to the outer frame 14 via a mounting frame 16 to which a drive unit 18 and acted upon by the drive unit with an adjusting or acted upon adjusting members are arranged to act on a adjusting support member with an adjusting force in the mounting position of the mounting frame 16. Der Mounting frame 16 is described below using the FIGS. 2 to 4 explained in more detail. The drive unit 18 will be described below with reference to Figures 5 and 6 explained in more detail. Adjusting the mounting frame 16 are formed in the illustrated embodiment by raising lever, which further below with reference to FIGS. 7 to 10 be explained in more detail.

Fig. 2 shows the outer frame 14 of the slatted base 2 with attached mounting frame 16, wherein the support members 6 to 12 in Fig. 2 have been omitted for clarity. How out Fig. 2 it can be seen, the outer frame 14 laterally spaced, in the longitudinal direction of the slatted base 2 extending longitudinal beams 20, 22, which are connected to each other in the region of their ends by transverse bars 24, 26. In the context of the invention is defined as the longitudinal direction of the slatted frame 2 that direction, along of which the slatted frame 2 has the greater extent. Accordingly, the transverse direction of the slatted base 2 is defined as the direction along which the slatted frame 2 has the lesser extent.

Fig. 3 The mounting frame 16 has longitudinal bars 28, 30, which are connected to one another in the region of their ends by means of transverse bars 32, 34. In the illustrated embodiment, the transverse bars 32, 34 are each formed by a profiled rail, which has the cross section of a horizontal C and are arranged or guided in the adjusting members of the mounting frame 16, as described below with reference to FIG Fig. 11 is explained in more detail.

In the illustrated embodiment, the mounting frame 16 is configured width adjustable to adapt to slatted frames of different widths. To realize the width adjustment telescoping elements 36, 38 and 40, 42 are arranged on the longitudinal beams 28, 30 of the mounting frame 16 respectively in the direction of the other longitudinal beam 30, 28, which are formed in the illustrated embodiment as a pipe parts and in the right Angle to the longitudinal beams 28 and 30 extend. In the telescopic elements 36, 38, the ends of the cross member 32 are guided telescopically in the illustrated embodiment. In a corresponding manner, the telescoping elements 40, 42, the ends of the cross member 34 are guided telescopically.

In the illustrated embodiment, the drive unit 18 is arranged on the cross member 32 and slidable in the direction of the cross member 32 and can be locked in the respective position.

For power transmission of electric motors of the drive unit 18 to the adjusting support members 6 to 12 Bowden cables 44, 44 'and 46, 46' are provided in the illustrated embodiment, each of which is associated with an adjusting member. The interaction of the Bowden cables 44, 44 ', 46, 46' with the drive unit 18 and the adjusting members will be described below with reference to FIGS. 5 to 7 explained in more detail.

For mounting the mounting frame 18 on the outer frame 14 of the slatted base 2, the width of the mounting frame 16 (see FIG. Fig. 3 ) corresponding to the width of the outer frame 14 (see FIG. Fig. 2 ) of the slatted frame 2. Specifically, the longitudinal beams 28, 30 of the mounting frame 16 are pulled apart so far that the distance between the outer surfaces of the longitudinal beams 28, 30 of the mounting frame of the clear width between the inner surfaces of the longitudinal beams 20, 22 of the outer frame 14 corresponds. In this case, slide the cross members 32, 34 of the mounting frame 16 in the telescopic elements 36, 38 and 40, 42. After setting the desired width of the mounting frame 16 is inserted into the outer frame, as in Fig. 2 shown. Subsequently, the mounting frame 16 can be attached to the outer frame 14, for example by screwing.

After assembly of the mounting frame 16 on the outer frame 14, the support members 6 to 14 of the slatted frame 2 can be connected to the mounting frame 16.

Fig. 4 shows an example of a compound of the upper body support member 8 with the mounting frame 16. The connection of the leg support member 10 together with its associated calf support member 12 is carried out in a corresponding manner and will therefore not be discussed here. For connection to the upper body support member 8 is on the mounting frame a storage device for pivotally mounting at least one pivotally adjustable support member formed, wherein the storage device in the illustrated embodiment laterally spaced bearing bushes, in which the upper body support member 8 is inserted with laterally spaced bearing journals. Fig. 4 shows the thus mounted pivotally mounted on the mounting frame 16 upper body support member. 8

Fig. 5 shows the drive unit 18 in a perspective view, wherein the housing 48 of the drive unit 18 is shown open for the sake of illustration. The drive unit 18 has two drive trains 50, 52, to each of which an electric motor 54 or 56 is assigned and whose output member is formed in each case by spindle nuts 58, 60. The sheaths of the Bowden cables 44, 44 'and 46, 46' are fixed to the housing 48 of the drive unit 18, while the traction cables of the Bowden cables are fixed in pairs to the spindle nuts 58, 60. In the illustrated embodiment, the traction cables of the Bowden cables 44, 44 'are fixed to the spindle nut 58, while the traction cables of the Bowden cables 46, 46' are fixed to the spindle nut 60. The electric motors 54, 56 are independently controllable. Control means for controlling the electric motors 54, 56 are not shown in the drawing for reasons of clarity. The same applies to power supply means, which are also not shown for reasons of clarity.

Fig. 6 shows the drive unit 18 according to Fig. 5 , for reasons of clarity, the Bowden cables 44, 44 and 46, 46 'are omitted. The powertrain 50 and its mode of operation will be explained in more detail below. The drive train 52 is constructed accordingly and will therefore not be explained in detail.

The electric motor 54 of the drive train 50 has an output shaft 62 designed as a worm gear worm, which is in engagement with a worm wheel 64, which is non-rotatably connected to a threaded spindle 66 rotatably mounted in the housing 48. In the illustrated embodiment, the worm 62 and the worm wheel 64 are part of a gear assembly, which, as shown Fig. 6 it can be seen, even more gear elements has, but in the present context, no further interest and therefore not be explained in detail.

On the threaded spindle 66 is secured against rotation and in the axial direction, the spindle nut 58, at which the Bowden cables 44, 44 '(in Fig. 6 not shown). For adjusting a support member of the electric motor 54 drives the threaded spindle 66 such that the spindle nut 58 in Fig. 6 moved to the left, so that the spindle nut 58 pulls on the traction cables of the Bowden cables 44, 44 '. The pulling action on the traction cables of the Bowden cables 44, 44 'is described below with reference to FIG Fig. 7 closer explained manner implemented in an erection of a raising lever, which forms an adjusting member of the mounting frame 16. A provision in the unadjusted position of the slatted frame (see. Fig. 1 ) takes place when the electric motor 54, but under the weight of the support member, possibly additionally under the load of a person resting on the slatted frame.

Fig. 7A shows a set-up lever assembly 68 which has a first set-up lever 70 which forms the adjusting member of the arranged on the mounting frame 16 furniture drive and under the pulling action of the traction cable of a Bowden cable can be set up in the illustrated embodiment under the pulling action of Traction cables of the Bowden cable 44 '. The first raising lever 70 is pivotable about a first pivot axis 72, wherein the first pivot axis 72 remote from the end of the first setting lever pivotally connected and about a second pivot axis 72 parallel to the second pivot axis 74 pivotally connected to a second setting lever 76, which is connected to the pull rope of the Bowden cable 44 'is operatively connected, such that the raising lever 70, 76 set up under the pulling action of the traction cable of the Bowden cable. In the illustrated embodiment, the traction cable of the in Fig. 7 Bowden cable, not shown, fixed to the end of the second setting lever 76 facing away from the first setting lever 70.

In the illustrated embodiment, the first set-up lever 70 is associated with a stop 78 which is formed on a stop member 80 which is non-displaceably connected to the longitudinal beam 30 of the mounting frame 16 (see. Fig. 11A ).

Hereinafter, the operation of the raising lever assembly 68 is explained in more detail, wherein on the Figs. 7A to 7E and on the Figs. 11A to 11E Reference is made. The Figs. 7A to 7E show only the set-up lever assembly 68 in combination with the stop member 80, while the FIGS. 11A to 11E additionally show the mounting frame 16. Among the Figs. 7A to 7E and 11A to 11E Figures with the same letter designate the same kinematic phase.

At the beginning of the adjustment movement, that is, with an undetached slatted base 2, the pivot axes 72, 74 and a force application point of the Bowden cable 44 'are located on the second set-up lever 76 in a plane, so that the raising lever arrangement under the pulling action of Traction cable of the Bowden cable 74 translational in Fig. 7A or 11A moves to the right. Out Fig. 11A It can be seen that the c-shaped profile of the longitudinal beam 30 of the mounting frame 16 forms a guide for the translational displacement of the set-up lever assembly 68. Due to the fact that in the first kinematic phase, the first pivot axis 72 and the second pivot axis 74 and the force application point of the traction cable of the Bowden cable 44 on the second setting lever 76 lie in one plane, the set-up lever assembly 68 in the first kinematic phase exclusively translational in FIG. 7A respectively. Fig. 11A moved to the right.

At the end of the first kinematic phase, the first set-up lever 70 runs on to a laterally, so in the axial direction of the first pivot axis 72 extending thickenings 82, 82 'on a lifting element 84 formed on the stop member 80. The lifting guide 84 is formed in the illustrated embodiment in cross-section arcuate. However, it can also be designed as an inclined plane.

Fig. 7B illustrates how the second setting lever 76 remote from the end of the first raising lever 70 runs onto the lifting guide 84 and is thereby raised, resulting in the consequence under the pulling action of the Zugseilsbowdenzuges 44 'to a setting up the raising lever 70, 76. Fig. 11B clarifies the resulting setting up the setting lever 70, 76th As from Fig. 7B and from Fig. 11B can be seen, the set-up lever assembly 68 performs during the second kinematic phase simultaneously both a translational movement and an erection.

Fig. 7C and Fig. 11C illustrate the end of the second kinematic phase, where the second Set-up lever 76 remote free end of the first setting lever 70 runs onto the stop 78 formed on the stop member 80, so that a further translational movement of the set-up lever assembly 68 is prevented.

During an adjoining third kinematic phase, the first raising lever 70 executes exclusively an erecting movement, in which it pivots about the first pivot axis 72.

The Figures 7D and 11D represent the set-up lever assembly 68 in the third kinematic phase.

Fig. 7E and Fig. 11E show the raising lever assembly 68 at the end of the third kinematic phase in which the raising lever 70, 76 of the set-up lever assembly 68 are maximally positioned. In the Fig. 7E and Fig. 11E shown position of the raising lever assembly 68 corresponds to a maximum adjustment of the upper body support member 8 relative to the central support member. 6

Fig. 8 shows a perspective view of the stop member 80 taken by itself, the stopper 78 is particularly clearly visible.

Fig. 9 illustrates the emergence of the free end of the first raising lever 70 on the stop 78 at the end of the second kinematic phase.

Fig. 10 shows the first raising lever 70 during the third kinematic phase in which it executes exclusively a pivoting movement about the first pivot axis 72 and thereby abuts against the stop 78.

Fig. 12 illustrates the adjustment of the upper body support member 8 by means of the Verstellhebelanordnung 68. In the illustrated embodiment, the deployment lever assembly 68 applied to a longitudinal beam 86 of the upper body support member 8 loose by the longitudinal beam 86th Loosely on the set-up lever assembly 68 rests. Spaced laterally to the longitudinal beam 86, the upper body support member 8 has a further longitudinal spar 88, which is associated with a corresponding raising lever arrangement, however, for reasons of clarity in Fig. 12 not shown. The erecting lever arrangement associated with the longitudinal beam 88 interacts with the traction cable of the Bowden cable 44, the mode of operation being as described for the raising lever arrangement 68 and therefore not explained in detail here. Since the traction cables of the Bowden cables 44, 44 'on the same spindle nut 58 (see. Fig. 5 ) are set, the set up the longitudinal members 68, 88 Aufstellhebel arrangements completely synchronously, so that twists of the upper body support member 8 are reliably avoided during the adjustment.

Fig. 12B and 12C clarify the further adjustment of the upper body support part. 8 Fig. 12D shows the end position of the adjusting movement, which corresponds to a maximum adjusted position of the upper body support member 8 relative to the central support member and the mounting frame 16.

Based on Fig. 13 and 14 Be subsequently explained the first raising lever 70 associated locking means, wherein Fig. 13 the first set-up lever 70 and Fig. 14 the stop element 18 taken individually. The first raising lever 70 are assigned locking means which are effective in a predetermined Aufstelllage the first raising lever and lock the first set-up lever 70 against a translational movement, at the same time allow a raising movement of the first raising lever. In the illustrated embodiment, the locking means are effective when the first raising lever 70 at the stop 78 adjacent and pivotally reaches a predetermined Aufstelllage. In the illustrated embodiment, the locking means have a (see. Fig. 13 ) Bearing pin 90 which is formed on the first pivot axis 72 facing the end of the first deployment lever 70. The bearing journal 90 is designed and arranged such that it is rotatably or pivotally mounted in the locking position in a bearing recess formed on the stop element 80 and is released in an unlocking position from the bearing recess.

How out Fig. 13 can be seen, the bearing pin 90 has a circular cross-section bearing portion 92 and a flattening 94. As a result, the bearing portion 92 in the illustrated embodiment is approximately semicircular in cross section. Out Fig. 13 is not apparent and therefore it is explained here that the first raising lever 70 has on its side facing away from the bearing pin 90 a corresponding journal.

Fig. 14 shows a perspective view of the stop member 80. The stop member 80 has a groove 96 which opens at its end in a sectionally circular in cross-section bearing surface portion 98 whose diameter is greater than the inside diameter of the groove 96th

• Wie oben anhand von Fig. 7B beschrieben, läuft während der Verstellbewegung das dem zweiten Aufstellhebel 76 abgewandte Ende des ersten Aufstellhebels 70 auf die Hubführung 84 auf und wird dadurch angehoben, was zu einem Aufstellen der Aufstellhebel 70, 76 führt. Hierbei ist der Lagerzapfen 90 translatorisch in der durch die Nut 96 gebildeten Führung geführt. Die lichte Weite der Nut 96 ist so bemessen, dass unter Berücksichtigung der Form des Lagerzapfens 90 und des Aufstellwinkels des ersten Aufstellhebels 70 der Lagerzapfen 90 translatorisch in der durch die Nut 96 gebildeten Führung geführt ist, ohne zu klemmen.

The operation of the locking means is as follows:

• As above based on Fig. 7B described, runs during the adjustment of the second setting lever 76 remote from the end of the first raising lever 70 on the lifting guide 84 and is thereby raised, which leads to a setting up the set-up lever 70, 76. Here, the bearing pin 90 is translational in the guided guide formed by the groove 96. The clear width of the groove 96 is dimensioned so that, taking into account the shape of the bearing pin 90 and the installation angle of the first setting lever 70 of the bearing pin 90 is translationally guided in the guide formed by the groove 96 without jamming.

At the end of the second kinematic phase (see the above description with reference to FIG Fig. 7C and Fig. 11C ) runs the second Aufstellhebel 76 remote from the free end of the first setting lever 70 on the stop member 80 formed on the stop 78, so that a further translational movement of the set-up lever assembly 86 is prevented.

During the subsequent third kinematic phase of the first raising lever 70 performs only an erection movement by being pivoted about the first pivot axis 72. Due to the formation of the bearing pin 90 and the bearing recess 98 of the bearing pin 92 locks in a further establishment of the first Austellhebels 70 on the bearing recess 98 such that it is secured against translational movement, at the same time a further raising movement of the first raising lever 70 is allowed.

By means of the locking means it is ensured that the raising lever arrangement 68 uniformly lowers in the event of a return from a maximally adjusted position in the direction of the unadjusted position. The provision takes place in such a way that the first setting lever 70 pivots back in the direction of the unadjusted position. Due to the locking means, up to a certain set-up position of the first raising lever 70, only one rotary or pivoting movement is permitted. In a predetermined Aufstellage the lock lifts, so that the bearing pin 90 thereafter translationally in the groove 96 in the direction of the stop 78 moves away.

Without the locking means, there would be a risk that the first set-up lever will immediately move translationally in the event of a return, and subsequently a sudden lowering will occur, which is undesirable.

Based on FIGS. 15 to 21 the operation of an embodiment of a support device according to the invention will be explained in more detail below.

For the sake of illustration is in the FIGS. 15 and 16 an observer facing longitudinal beam of the outer frame 4 omitted.

Hereinafter, only the adjustment of the upper body support member 8 is described relative to the central support member 6. The adjustment of the leg support member 10 with the calf support member 12 is carried out in a corresponding manner and is therefore not explained in detail.

With the longitudinal spar of the outer frame 14, not shown, a pivot joint 100 is connected, via which the upper body support member 8 is pivotally connected to the outer frame 14.

At the in FIG. 15 illustrated embodiment is an adjusting member for adjusting the upper body support member 8 relative to the central support member 6 under the pulling action of a pull cable 110 (see. FIG. 17 ) of a Bowden cable pivotable pivot lever 102 which is formed and is in operative connection with the pull cable 110, that changes the length of the effective for adjusting the upper body support member 8 lever arm during an adjustment between an undistorted starting position and a maximum adjusted end position of the adjustment.

In the illustrated embodiment, this is Upper body support member 8 arranged substantially horizontally in the unadjusted starting position and spans with the central support member 6 and the leg support member 10 and the calf support member 12 a horizontal support plane for a mattress, not shown. A maximum adjusted end position is in FIG. 16 shown. Accordingly presents FIG. 15 a lying between the starting position and the end position adjustment.

In the illustrated embodiment, the pivot lever 102 is formed as pivotally connected to the support member to be adjusted, so the upper body support member 8, connected cam body, which is supported during the adjustment of a support. The support is formed in this embodiment by an angular tab 104 whose vertical Schwenkel with the in FIG. 15 omitted longitudinal spar of the outer frame 14 of the slatted base 2 connected, for example screwed, is, and its horizontal leg forms the support for the pivot lever 102.

FIG. 17 shows the pivot lever 102 taken in a side view while FIG. 18 a perspective view from above and FIG. 19 shows a perspective view from below.

Laying down the end of the traction cable 110 of the Bowden cable, the pivot lever 102 at its end facing away from the pivot axis 103 a recess 106 into which a cylindrical mounting nipple at the free end of the traction cable 110 of the Bowden cable is positively inserted. Of the recess 106 extends in the circumferential direction of the pivot lever 102 has a groove 108 which is about the pivot axis 103 facing away from the end of the pivot lever 102 around (see. FIG. 18 ) and from there in the circumferential direction of the pivot lever 102 (see. FIG. 19 ) in the direction of the pivot axis 103 facing End of the pivot lever 102 leads. The resulting course of the traction cable of the Bowden cable is in FIG. 17 indicated at the reference numeral 110. By an arrow 112 is in FIG. 17 symbolizes the direction of the pivot lever 102 about the pivot axis 103 in the drawing counterclockwise to seek seeking force.

In particular from FIG. 17 It can be seen that the pivot lever 102 is formed on its peripheral surface, with which it is supported on the support during the adjustment, as a cam, so that the length of the effective for adjusting the upper body support member 8 lever arm during an adjustment from the undistorted starting position in the changed maximum adjusted end position of the adjustment movement.

To the upper body support member from its unadjusted starting position or in FIG. 15 illustrated adjustment position in the direction of the in FIG. 16 to adjust shown end position, the drive unit 18 is driven such that is pulled in the direction of the arrow 112 on the pull cable 112, so that the pivot lever 102 is pivoted in the counterclockwise direction in the drawing. Here, the pivot lever 102 is supported on the support 104, wherein its curved in cross-section circumferential surface during the adjustment moves on the support. During the pivoting and erection of the pivot lever 102, the upper body support member 8 from the in FIG. 15 pivoted adjusting position pivoted until in FIG. 16 shown end position of the adjustment is reached.

FIG. 20 shows a detail in the region of the pivot lever 102 and the support 104 in the end position of the adjustment movement.

In FIG. 21 at 112 is the effective lever arm shown, which results when the pivot lever 102 is supported in different phases of the adjustment movement with a peripheral point 114 at its outer periphery on the support 104. In a corresponding manner is denoted by 112 'and 112 "of the effective lever arm, which results when the pivot lever 102 is supported at a circumferential point 114' and 114" of its circumference on the support 104. It can be seen that the cam body forming the pivoting lever 102 is shaped in such a way that the length of the effective lever arm lengthens in the direction of the end position of the adjusting movement. Accordingly, the adjusting force exerted on the upper body support member 8 increases toward the end position of the adjusting movement. It can be seen that by appropriate shaping of the cross section of the cam body of the force curve can be adjusted according to the respective requirements. As already on the basis of FIG. 1 to 14 explained, in the illustrated embodiments, each side member of a support member to be adjusted associated with an adjustment, wherein the support member associated adjusting members are each connected to a traction cable of a Bowden cable and these traction cables are operated synchronously, so that the driving force of the drive unit to the longitudinal center plane of the slatted base 2 symmetrical is introduced into the support parts.

As already stated, the adjustment of the leg support part 10 with the calf support part 12 is based on the same functional principle as the adjustment of the upper body support part 8.

Based on FIG. 22 to 28 a further embodiment of a support device according to the invention is shown below.

The further embodiment is for support a so-called box spring mattress provided, wherein the support members 6, 8, 10, 12 are plate-shaped.

The operation of the further embodiment will be explained in more detail with reference to the adjustment of the upper body support member 8. The adjustment of the leg support member 10 with the calf support member 12 is based on the same principle of operation and will therefore not be explained here.

FIG. 22 shows the upper body support member 8 in an undistorted starting position while FIG. 24 the maximum adjusted end position and FIG. 23 shows an intermediate adjustment position. In the FIG. 22 to 24 For reasons of clarity, the outer frame 14 of the support device has been omitted in each case.

The further embodiment provides insofar a kinematic reversal of the basis of the FIG. 15 to 21 described embodiment, when the pivot lever 102 is pivotally connected to the outer frame 14 about a pivotally mounted on a longitudinal spar of the outer frame 14 pivot bearing about the pivot axis 103. The pivot axis 103 facing away from the end of the pivot axis 102 forms a support for the upper body support member 8, which is applied in the illustrated Auführungsbeispiel by the pivot lever 102 loose and is supported on a fixed to the free end of the pivot lever 102 roller 116.

FIG. 25 shows the pivot lever 102 in a position in which it is in the end position of the adjustment movement (see. FIG. 24 ), in combination with a holding part 118, which holds a rocker arm 102 facing the end of a sheath of a Bowden cable, the traction cable is used to pivot the pivot lever 102 and is fixed to the same. The rope of the Bowden cable is in FIG. 27 at the reference numeral 110. Incidentally, however, the Bowden cable including traction cable and sheathing is omitted in the drawing for reasons of clarity.

FIG. 28 shows the pivot lever 102 in a perspective view. In the illustrated embodiment, the pivot lever 102 is formed integrally with a cam 120. The free end of the traction cable 110 is fixed tensile strength on the holding part 118 facing away from the end 122 and guided from there via the cam body to the holding part 118 (see. FIG. 27 ).

In particular from the FIG. 27 and 28 It can be seen that the cam 120 is shaped so that the length of the effective for adjusting the upper body support member 8 lever arm during an adjustment between the unadjusted initial position (see. FIG. 22 ) and the maximum adjusted end position (cf. FIG. 24 ) extended.

As in FIG. 25 shown, the holding member 118 is pivotally mounted about a pivot axis parallel to the axis 103 pivot axis 124. It has a jaw-like receptacle 126, on which the sheath of the Bowden cable is fixed, wherein the traction cable of the Bowden cable through a recess 128 which is formed on the pivot axis 124 opposite end of the holding member 118, of the receptacle 126 (see. FIG. 25 ) and from there to the cam 120 is guided (see. FIG. 27 ).

FIG. 26 shows the holding member 118 taken alone.

• Zum Verstellen des Oberkörperstützteiles 8 übt die Antriebseinheit eine Zugkraft auf das Zugseil 110 aus, so dass der Schwenkhebel aus der in FIG. 22 dargestellten Ausgangslage über die in FIG. 23 dargestellte Verstelllage bis in die in FIG. 24 dargestellte maximale Verstelllage der Verstellbewegung verschwenkt wird und hierbei das Oberkörperstützteil 8 in der gewünschten Weise verschwenkt.

The functioning of the in the FIG. 22 to 28 illustrated embodiment is as follows:

• To adjust the upper body support member 8, the drive unit exerts a tensile force on the pull cable 110, so that the pivot lever from the in FIG. 22 illustrated starting position over in FIG. 23 illustrated adjustment position to the in FIG. 24 shown maximum adjustment position of the adjustment is pivoted and in this case the upper body support member 8 is pivoted in the desired manner.

Since the pull cable 110 is guided over the cam 120, the lever arm which is effective during the adjustment of the upper body support part 8 during the adjustment movement is extended towards the end position of the adjustment movement.

Due to the pivotable mounting of the holding part 118, the same changes in direction of the traction cable 110 take place in the circumferential direction of the pivot axis 124, so that a radial load on the sheathing of the Bowden cable is avoided.

In the various figures of the drawing and the various embodiments, the same or corresponding components are provided with the same reference numerals. As far as components are omitted in the figures of the drawing for reasons of illustration or illustration, the relevant components in each case the other figures are to be complemented accordingly. It is obvious to the person skilled in the art that the features of the individual exemplary embodiments are also interchangeable among the exemplary embodiments, ie that the features disclosed with respect to one exemplary embodiment can be present identically or correspondingly in the other exemplary embodiments as well. It will also be apparent to those skilled in the art that the features disclosed with respect to the individual embodiments further develop the invention in isolation, that is independently of the further features of the particular embodiment.

Claims (10)

Electromotive adjustable support means for supporting a padding of a seat and / or reclining furniture, in particular a mattress of a bed,
with at least two support parts (6, 8) which are adjustable relative to one another,
wherein at least one support member (8) for adjusting it is associated with an adjusting member which is in drive connection with an electric motor of a drive unit (18),
characterized,
in that the adjusting member is a pivoting lever (102) pivotable under the traction of a traction cable (110) of a Bowden cable, which is designed in such a manner and in operative connection with the traction cable (110) that the length of the lever arm effective for adjusting the supporting part (8) changed during an adjustment between an undistorted starting position and a maximum adjusted end position of the support member (8). Support device according to claim 1, characterized in that the pivot lever (102) as pivotally connected to the supporting member to be adjusted cam body is formed, which is supported during the adjustment of a support (104). Support device according to claim 2, characterized in that the support is designed as a substantially flat surface. Support device according to claim 2 or 3, characterized in that the support is formed on a connectable with an outer frame (14) of the support means tab. Support device according to one of the preceding claims, characterized in that the traction cable (112) of the Bowden cable is guided around a cam body (120) which is in pivot drive connection with a pivoting lever (102). Support device according to claim 5, characterized in that the cam (120) is non-rotatably connected to the pivot lever (102). Support device according to claim 5 or 6, characterized in that the cam body (120) is formed integrally with the pivot lever (102). Support device according to one of claims 5 to 7, characterized in that the cam body (120) facing the end of the sheath of the Bowden cable is held on a holding part (118) which is pivotally mounted about a pivot axis (124) that the sheath of Bowden cable changes the direction of the pull cable (110) in the circumferential direction of the pivot axis (124) retraces. Support device according to claim 8, characterized in that the pivot axis (124) of the holding part (118) to the pivot axis (103) of the pivot lever (102) is parallel. Support device according to one of the preceding claims, characterized in that the cam body is shaped such that extends the effective lever arm to a maximum adjusted end position of the adjustment out at least in phases.

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