EP1850697A1

EP1850697A1 - Chair

Info

Publication number: EP1850697A1
Application number: EP05823180A
Authority: EP
Inventors: Eckhart Dewert
Original assignee: Deon AG
Current assignee: Deon AG
Priority date: 2005-01-14
Filing date: 2005-12-02
Publication date: 2007-11-07
Also published as: WO2006074761A1; DE102005001875B4; US20080012405A1; DE102005001875A1; CN101102699A

Abstract

An inventive chair comprises a base body (2) and at least two upholstered supporting parts (10, 12), which are arranged on the base body and serve to support a person using the chair. To this end, the supporting parts (10, 12) have a seating part (10). According to the invention, at least one electric motor (24) of an electric motor-driven adjusting device for displacing at least one of the supporting parts (10, 12) relative to the base body (2) and/or to another supporting part (10, 12) is integrated in the seating part (10) without projecting whereby the electric motor (24) does not extend beyond an outer periphery of the seating part (10).

Description

armchair

The invention relates to a chair referred to in the preamble of claim 1 Art.

Such chairs are known, for example in the form of motor-adjustable armchairs, which have mutually adjustable motor parts, for example, a relative to a seat part adjustable calf part for supporting a person resting on the chair person leg or. Calf area. For adjusting the parts of the furniture relative to each other, an electromotive adjusting device is provided which have a drive unit with an electric motor.

From DE 101 23 380 C2, a chair of the relevant type is known, which has a base body and arranged on the main body padded support members for supporting a person resting on the chair person. In the known chair, the support parts are formed by a seat part, a swing-out footrest and a pivoting back part, wherein for adjusting an electromotive adjusting device is provided, which is arranged below the seat part.

Motorically adjustable armchair are also known from DE 196 45 456 Al, DE 199 45 118 Al, DE 199 02 467, DE 102 07 360 B4, DE 20 2005 003 961 Ul, DE 203 19 483 Ul and DE 198 44 240 C2.

To the arranged below the seat part elec- To hide tromotomic adjustment, panels or derglei surfaces are provided in the known armchairs.

Em disadvantage of the known chair is that they seem relatively clunky and thus ugly.

The invention has for its object to provide a chair referred to in the preamble of claim 1 species, which does not have the disadvantages of the known chair, which is therefore designed visually advantageous. This object is achieved by the teaching defined in claim 1.

The basic idea of the teaching according to the invention is to integrate at least one electric motor of an electromotive adjusting device for adjusting at least one of the supporting parts relative to the basic body and / or to another supporting part without jerking the seat part. In this way, at least the electric motor is hidden and visually no longer appears, so that the erfmdungsgemaße armchair is designed visually very beneficial. Since the electromotive adjusting device is not or hardly visible, the chair according to the invention gives the overall visual impression of a non-motorized adjustable chair. The invention is solved for the first time by the idea of adjusting the seat part of a chair by means of an adjusting device arranged below the seat part, for example a scissors mechanism. The invention thus provides for the first time ei nen armchair ready, in which at least one electric motor, in particular, but also the essential components ei ner complete electromotive adjusting, m the seat part are integrated.

A particular advantage of the chair according to the invention is that due to the integration of the Electric motor in the seat part elaborate panels on the seat part for covering the electric motor or. the electromotive adjusting device are not required. In this way, the inventive armchair acts much graceful than known chair. Em Another advantage of the integration of the electric motor m the seat part is that in terms of the design of the chair according to the invention, the freedoms are substantially increased. If the electromotive adjusting device has only one electric motor, this is erfmdungsgemaß integrated supernatant in the seat part. According to the invention, however, it is also possible for the electromotive adjusting device to have at least two electric motors which, according to the invention, are integrated into the seat part so as to be free of excessively large amounts. For example, and in particular it is erfmdungsgemaß possible to integrate several electric motors in the seat part, one of which the seat part for adjusting the same and at least one other another support member for

Adjustment of the same is assigned.

In principle, the electric motor can be moved relative to one another during adjustment of the support parts relative to each other. A particularly advantageous development of the teaching according to the invention provides, however, that the seat part, in which the electric motor is integrated, is adjustable in motion. In this embodiment, together with the electric motor, the adjusting device can be substantially completely integrated into the respective seat part which is movable during the adjustment. In this way, mechanical parts of the adjusting device can be designed to be particularly simple. In particular, particularly short levers can be used. Another extremely advantageous development of the teaching of the invention provides that the adjusting device has at least one linear drive, the output member is in driving connection with the electric motor, and that the linear drive is supernatant integrated in the seat part. In this embodiment, the integration of components of the adjusting device in the seat part is further increased. An advantageous development of the aforementioned embodiment provides that the linear drive has a spindle drive. Such spindle drives are available as simple and inexpensive standard components. They are robust and suitable for applying large forces. An advantageous development of the aforementioned embodiment provides that the output member of the spindle drive is a spindle nut which is arranged verdrehsi cher and movable in the axial direction on a rotatable drivable threaded spindle, which is in drive connection with the electric motor. In kinematic shear reversal of the aforementioned embodiment, the output member of the spindle drive j edoch but also be a threaded spindle, which is mounted against rotation and movable in its axial direction and on which a stationary, rotatably driven spindle nut is arranged, which is in driving connection with the electric motor.

Another development of the teaching according to the invention provides that the seat part is connected to the main body or with an adjacent support member, preferably exclusively, via at least one lever-like strut. In this embodiment, with the exception of the strut, which may in particular form part of the adjusting device, all components of the Adjustment be integrated into the support member, so that there is a particularly appealing overall appearance.

An advantageous development of the aforementioned embodiment provides that the lever-like strut is formed flat perpendicular to its longitudinal extent. In this way, the strut visually fades into the background.

Another advantageous development of the teaching according to the invention provides that at least two electric motors are integrated in the seat part, one of which is assigned to the seat part for adjustment thereof and at least one other support part for the same. Another advantageous development of the teaching of the invention provides that the electromotive adjusting device including at least one electric motor is arranged below a padding of the seat part and that between the padding and the electromotive adjusting means for

Pressure relief of the electromotive adjusting device are arranged. In this way it is reliably avoided that under load of a seated on the chair person, a pressure load on the components of the electromotive adjusting is exercised when loading the seat surface of the seat part.

To design the means for pressure relief simple and inexpensive, provides a development of the aforementioned embodiment, that the means for pressure relief of the electromotive adjusting device having a surrounding electromotive adjustment frame, extending in the direction of the support member up to an upper boundary plane the electromotive adjusting device or extends beyond and rests on the padding. The frame can in this embodiment, the electromotive adjusting completely or only partially surround in the circumferential direction and, for example, consist of Hol z.

The invention will be explained in more detail with reference to the attached drawing, are shown in the exemplary embodiments of a piece of furniture according to the invention. Here are all described or in the

The features of the invention, which are shown in the drawing alone or in any combination, are the subject matter of the invention, regardless of their combination in the patent claims or their dependency and independently of their formulation or Presentation in the description resp. m the drawing.

It shows :

Fig. 1 is a perspective view of an embodiment of a chair according to the invention,

Fig. 2 in perspective phantom representation

Parts of an adjusting device for adjusting a calf part of the furniture of FIG. 1 ,

Fig. 3 is a side view of parts of the adjusting device according to FIG. 2,

Fig. 4 is a perspective view of parts of the adjusting device according to FIG. 2,

Fig. 5 in a partially sectioned side view of the chair according to FIG. 1 at the beginning of a first kinematic phase of the adjustment movement, Fig. 6 in the same representation as Fig. 5 the chair according to FIG. 5 during the first kinematic phase of the adjustment movement in an adjustment position, FIG. 7 in the same representation as FIG. 5 the

Armchair according to FIG. 5 during the first kinematic phase of the adjustment movement in a further adjustment position,

Fig. 8 m same representation as Fig. 5 the chair according to FIG. 5 at the end of the first kinematic phase and at the beginning of the second kinematic phase of the adjustment movement,

Fig. 9 in the same representation as FIG. 5 the chair according to FIG. 5 during the second kinematic phase of the adjustment and

Fig. 10 in the same representation as FIG. 5 the

Armchair according to FIG. 5 at the end of the second kinematic phase of the adjustment.

In the figures of the drawing are the same or. Corresponding components provided with the same reference numerals.

In Fig. 1 shows an exemplary embodiment of a chair 2 according to the invention, which has a main body 4 which has two laterally spaced-apart armrests 6, 8. On the armrests 6, 8, a first support member in the form of a padded, a seat having seat portion 10 is arranged, with one end adjustably another support member m shape of a calf portion 12 is connected to the Abstutzung a person resting on the chair 2 person Wa - den- resp. Lower leg area serves. A further support part in the form of an upper body part 14 is connected to the end of the seat part 10 facing away from the washing part 12, with its end facing away from the seat part 10 being adjustably adjustable by a further support part m

Form of a head part 16 is connected. The upper body part 14 serves to support a person resting on the armchair 2 in the upper body region, while the head part 16 serves to support a person resting on the armchair 2 in the head region.

The calf part 12 is pivotable relative to the seat part 10, as will be explained in more detail below.

In Fig. 2 and FIG. 3 parts of an electric motor adjusting device 17 are shown, by means of which the calf part 12 is pivotable relative to the seat part 10. In this exemplary embodiment, the calf part 12 is assigned two drive units 18, 20, wherein m is a first kinematic phase of the adjustment movement, namely a pivot movement, the adjustment by means of the first drive unit 18 and m the second kinematic phase of the adjustment movement by means of the second drive unit 20 takes place, wherein the calf part 12 in the first kinematic phase and the second kinematic phase performs a substantially similar adjustment, namely a pivoting movement.

For pivoting the calf part 12 relative to the seat part 10 in the first kinematic phase, a first pivot axis 22 is provided, which in this exemplary embodiment is formed by a substantially horizontally extending, pivotally mounted on the armrests 6, 8 pivot shaft.

The first drive unit 18 has an electric - S - motor 24, the output shaft 26 is formed as a worm egg nes worm gear and is in engagement with a rotatably mounted worm wheel 28 which is rotatably connected to a threaded spindle 30 is rotatably mounted on the seat part 10 and on the Worm wheel 28 and the worm 26 is in rotary drive connection with the electric motor 24. The output member of the first drive unit is formed by a spindle nut 32, which is arranged against rotation and movable in the axial direction on the threaded spindle 30. ^{■ '}

With the spindle nut 32, one end of a push rod-like connecting element 34 is connected, the sen other end in the manner of a crank mechanism and articulated to the first pivot axis formed by the pivot shaft 22 is eccentrically connected to an articulation lever 36 which is rotatably connected to the pivot shaft 22.

To a symmetrical with respect to the axial center plane of the threaded spindle 30 force introduction into the

To achieve pivot shaft 22, the first drive unit 18 in the axial direction of the pivot shaft 22 to the rod 34 and the lever 36, a further link lever 36 'and another push rod-like connection element 34' on. As shown in FIG. 2, the push rod-like connecting elements 34, 34 'form a fork-like arrangement, between which the free end of the threaded spindle 30 is received.

The second drive unit 20 has an electric motor 38, whose output shaft 40 is formed as a worm and with a rotatably mounted Schnek- kenrad 42 is engaged, which is rotatably connected to a rotatably mounted on the calf portion 12 threaded spindle 44. The electric motor 38 is connected to a nenrahmen 46 of the calf part 12 attached.

The output member of the second drive unit 20 is formed by a spindle nut 48, which is arranged against rotation and movable in the axial direction on the threaded spindle 44.

The calf part 12 is pivotally mounted on the same relative to a second pivot axis 50. The second pivot axis 50 is connected via two lever-like struts spaced apart in the axial direction of the second pivot axis 50 in the form of substantially arcuate tabs 52, 54 with the pivot shaft forming the first pivot axis 22 , For this purpose, one end of the tab 52 is rotatably connected to the first pivot axis 22 forming the pivot shaft, while its other end is rotatably connected to the second pivot axis 50. The connection of the tab 54 with the pivot shaft 22 and the second pivot axis 50 is formed in this m corresponding manner.

The second drive unit 20 has a second push rod-like connecting element 56, one end of which is articulated to the spindle nut 58 in the manner of a crank drive and the other end is pivotally connected to the first pivot axis 22 and the second pivot axis 50 eccentrically with the tab 54

Fig 3 illustrates the connection of the Spindelmut ter 48 with the tab 54 on the rod 56th

According to the invention, the first drive unit 18 of the electromotive adjusting device is integrated in the overhang-free m the seat part 10. As shown in FIG. As can be seen, in particular the electric motor 24 and the linear drive, which in this embodiment is formed by the spindle drive, which consists of the threaded spindle 30 and the spindle nut 32, integrated into the seat part 10 without any excess

According to the invention, furthermore, the second drive unit 20 of the electromotive adjusting device is integrated into the calf part 12 without overflow, as can also be seen from FIG. 5 can be seen. In particular, the electric motor 38, together with the linear drive, which is embodied as a spindle drive, which consists of the worm spindle 44 and the spindle nut 48, is integrated into the calf part 12 without overflow. The m the seat part 10 and. the calf part integrated components 12 of the drive units 18, 20 are completely in this Ausfuh- example of the seat part 10 and. taken up by the calf part 12. As shown in FIG. 1 ersicht Lich, the drive units 18, 20 thus completely obscured. As a result, the chair 2 according to the invention conveys the overall visual impression of a non-motorized armchair.

According to the invention, an electric motor 58 together with the associated spindle drive 60 is also integrated in the calf part 12 in an overflow-free manner (cf., FIG. 2). The electric motor 58 serves to compress or de - densify the calf part 12 in a manner not of interest here.

Furthermore, according to the invention, in the seat part 10, an electric motor 62 together with associated spindle drive 64 as well as an electric motor 66 together with associated spindle drive 68 are integrated without any surges (see Fig. 4) The electric motors 62, 66 serve in a manner not of interest here, the seat part 10 relative to the armrests 6, 8 in its inclination or. Further, according to the invention in the Sit zteil 10, an electric motor 70 together with associated spindle drive 72 integrated without overflow, which serves in here not near interest manner, the back part 14th relative to the armrests 6, 8 to adjust.

The adjustment of the calf part 12 relative to the seat part 10 will be described below with reference to FIGS 5 to 10. In a first kinematic phase illustrated in FIGS. 5 to 8, the calf part 12 is pivoted about the first pivot axis 22 relative to the seat part 10 by means of the first drive unit 18, while the calf part 12 is rotated by the second drive unit 20 in the second kinematic phase Swivel axis 50 ^" relative to the Sit ^' zteil ^" 10 is pivoted. As can be seen from FIGS. 5 to 10, in this embodiment the first pivot axis 22 and the second pivot axis 50 are substantially parallel to one another.

Fig. 5 shows a first end position of the adjusting movement, in which the seat part 10 and the calf part 12 span a substantially horizontal support plane. Starting from this end position of the adjusting movement, the electric motor 24 drives the threaded spindle 30 in such a way that the spindle nut 32 in FIG. 5 moves to the left. Here, the spindle nut 32 presses via the connecting element 34 against the articulation lever 36, so that this in FIG. 5 pivoted about the first pivot axis 22 in the counterclockwise direction.

As shown in FIG. 6, the calf part 12 pivots relative to the seat part 10 about the first pivot axis 22. Since the second drive unit 20 is stopped in the first kinematic phase, the kinematics in this phase are determined exclusively by the first drive unit 18.

As shown in FIG. 7 can be seen, pivoted in a further movement of the spindle nut 32 in FIG. 7 to the left, the calf part 12 continues counter to the clock In order to avoid a colli sion of the free end of the calf part 12 with the bottom 56, the calf part 12 is formed in this longitudinal direction compressible in its longitudinal direction, with a compression or. Entstauchung done by means of an electric motor drive unit, which j edoch but not interested and therefore not further explained.

Fig. FIG. 8 shows the end of the first kinematic phase at which the calf part 12 is opposite the m Fig. 5 is pivoted counterclockwise about 90 °, as can be seen from a comparison of FIGS. 5 and 8.

Fig. 8 also represents the starting position at the beginning of the second kinematic phase. In this initial position, the electric motor 38 drives the threaded spindle 44 such that the Spmdelmutter 48 m Fig. 8 moves down. Due to the articulated connection of the Spmdelmutter 48 with the tab 54 via the lever 56 in this case the calf part 12 is pivoted relative to the seat part 10 further counterclockwise, and now about the second pivot axis 50, as shown in FIG. 9 can be seen.

Starting from the in Fig. 9 illustrated Verstellposition drives the electric motor 38, the Gewemde- spindle 44 further such that the Spmdelmutter 48 m Fig. 9 screws to the right, so that the calf part 12 is pivoted further counterclockwise until it the in Fig. 10 has reached shown second end position of the adjusting movement. During the second ki nematic phase, the first drive unit 18 is stopped, so that the kinematics is determined exclusively by the second drive unit 20.

As shown in FIG. 10 it can be seen that is the Elek- tromotors 62, 66 containing electromotive adjusting arranged below a padding 74 of the seat part 10. From the drawing is not apparent and therefore it is explained here that zwi - see the padding 74 and the electromotive adjusting means for pressure relief of the electromotive adjusting device are provided. These means prevent under load of the Sit zfläche of the seat part 10, for example, under the load of a person sitting on the seat, a compressive force is transmitted to the components of the electromotive adjustment device. The means for pressure relief of the electromotive adjusting device may for example have a frame surrounding the adjusting, which projects in the direction of the seat part 10 to an upper boundary plane of the rule elektromotori adjustment over which none of the components of the electromotive adjusting device in the direction of the seat part 10, or Moreover, the padding 74 rests on the top of the frame. In this way, a pressure relief of the components of the electromotive adjusting device is achieved by simple means.

In the exemplary embodiment shown in the drawing, all are used to adjust the

Stüt parts of the chair 2 relative to each other or. electric motors used together with the main body, in each case with an associated spindle drive, project into the seat part 10, respectively. the calf part 12 integrated and thus not visible to the user. Because of this, the armchair 2 according to the invention gives an advantageous overall impression. In particular, the chair according to the invention may have the design of a non-motorized armchair.

Claims

claims

1. armchair,

with a basic body (2) and

with at least two upholstered support parts (10, 12) arranged on the base body for supporting a person resting on the chair, the support parts (10, 12) having a seat part (10),

characterized ,

in that at least one electric motor (24) of an electromotive adjusting device for adjusting at least one of the supporting parts (10, 12) relative to the basic body (2) and / or another supporting part (10, 12) in the seat part (10) is integrated, such that the electric motor (24) does not protrude beyond an outer boundary surface of the seat part (10).

2. Armchair according to claim 1, characterized in that the seat part (10), in which the electric motor (38) is integrated, is adjustable.

3. Armchair according to claim 1 or 2, characterized in that the adjusting device has at least one linear drive, the output member with the electric motor (24 or 38) is in drive connection, and that the linear drive supernatant is integrated into the seat part (10) ,

4. Chair according to claim 3, characterized in that the linear drive has a spindle drive (30, 32 or 44, 48).

5. Armchair according to claim 4, characterized in that the output member of the spindle drive (30, 32 or 44, 48) is a spindle nut (32 or 48) which is arranged against rotation and movable in the axial direction on a rotatably driven threaded spindle with the electric motor (24 or 38) is in drive connection.

6. Armchair according to one of the preceding claims, characterized in that the seat part (10) with the base body (4) or with an adjacent support member

(12), preferably exclusively, is connected via at least one lever-like strut.

7. Chair according to claim 6, characterized in that the lever-like strut is formed flat perpendicular to its longitudinal extent.

8. Armchair according to one of the preceding claims, characterized in that the electromotive adjusting device has at least two electric motors (24, 62), the supernatant are integrated into the seat part (10), wherein one of the electric motors (66) the seat part (10 ) For adjusting the same and at least one other electric motor (24) is assigned to another Stu zteil (12) for adjusting the same.

9. Chair according to one of the preceding claims, characterized in that the electromotive Control device including at least one electric motor below a padding (74) of Sitztei les (10) is arranged and that between the padding (74) and the electromotive adjusting means for pressure relief of the electromotive adjusting device are arranged.

10. Armchair according to claim 9, characterized in that the means for pressure relief of the electromotor - see adjusting a surrounding the electromotive adjusting frame, which extends in the direction of the seat part (10) to an upper boundary plane of the electromotive adjusting device or beyond and on which the padding (74) rests.