EP1880639B1 - Seating furniture, in particular a chair - Google Patents

Description

The invention relates to a chair, in particular a chair.

Seating furniture such as armchairs, chairs, stools or the like are known and proven in various embodiments. While foldable chairs or stools, as seen from the US 2002/0117878 A1 or the GB 190908825 A are known that have a flexible, held only at four corners of four supports seat, at most meet the comfort requirements in a camping, hunting or fishing, offer the so-called cantilever chairs, in which only the front of a seat is connected to feet while the rear area of the seat can swing vertically freely, a high level of comfort.

Such a high level of comfort can also provide seating due to complex suspension systems, as they are from the US 4,183,494 or the US 3,333,811 are known.

Another seating is also off CH 164140 known.

A high degree of functionality is provided by modern office chairs, where a vertical pillar rests on mostly 5 feet on a floor. Telescopically, the seat is set vertically adjustable in this column and freely rotatable about a vertical axis. Regularly, the seat is also resiliently mounted in the vertical and often adjustable by complex joints in the inclination.

In such a generic, from the CH 164 140 known chair is an integral frame of a multi-curved tube provided in which the bent around a central pillar and fixed to this pipe horizontally extending away from the column and extending below the seat extends. Below the seat again bent twice U-shaped, the seat is on horizontally extending pipe sections.

Against this technical background, the invention has the object to provide a chair, in particular a chair available that allows a variety of variants of the connection of a seat to the feet by its structural design and a high seating comfort with high functionality united.

This technical problem is solved in a chair, comprising a two-piece, freely arranged below a seat node, of which a first part and a second part are mutually pivotable about a vertical axis, wherein the first part of the feet and the second part Columns are connected, according to the claim 1 by the measures that two separately formed supports are provided, that in each case one end of a support is connected to the second part of the node, that the other end at an angle between 30 ° and 55 ° opposite a horizontal center plane of the node is arranged extending toward the front corners of the seat, that there each support is connected to a separately formed, opposite arc, wherein the arches are arranged in front of the seat.

By separating the seat from the feet standing on the ground by the interposition of a knot, a further freedom of design for the structural design of the seat according to the invention is given. Both the structural design of the feet as well as the supports is largely non-binding.

By virtue of the node, which is arranged freely below the seat, it is further advantageously possible for the node to be designed in two parts such that a first part and a second part are pivotable relative to one another about a vertical axis and to the first part the feet and the second part the supports are connected.

In a simple way, the functionality of a swivel chair is thereby achieved, namely the possibility of twisting the seat against the feet standing firmly on the floor.

In a preferred embodiment of the seat according to the invention it is provided that the feet are connected at an angle between 30 ° and 55 °, in particular at an angle of about 45 °, relative to a horizontal center plane of the node at this. In order to eliminate this skewed position of the feet relative to the ground, it is preferred in a constructive development that the feet have oppositely bent ends, so that the feet are perpendicular or nearly perpendicular to the ground. This measure also has the advantage that the ends can each be provided with a height adjustment and / or with rollers, which can then be introduced according to commercial standards with a shaft or a screw thread in the tubular ends of the feet.

In the chair according to the invention, three or five feet may be provided, but four feet are preferred, which are connected in a plane to the node and which preferably rise with their bent ends approximately vertically below the corners of the seat on the ground. This ensures the qualities of a four-legged frame with a rotary axle mount.

According to the feet and the supports are preferably connected in a plane to the node, in particular, it is provided that the supports also at an angle between 30 ° and 55 °, preferably again at an angle of about 45 °, with respect to a horizontal median plane Nodes are connected. Clamp the supports and the feet, in one side and / or one front or. Rear view, same angle to the median plane of the node, the posts are arranged in a side view and / or in the front or rear view lying in a line with the feet, which in addition to an excellent aesthetics offers the opportunity to make the feet and the supports alike.

The feet and / or the supports, preferably both, are tapered, tapering away from the node. In addition to aesthetic aspects, this measure also offers the technical advantage, provided that the feet and / or the supports are made of a steel tube, for example. Are made of steel, that they can be plugged on knot-fixed nozzle. Modern bonding techniques then allow a simple, but secure fixing of the feet or the supports on the node. In addition, it is manufacturing technology favorable to provide the node with a comparatively short, dimensionally sound nozzle, as the feet or the supports set directly to the node.

For an exact positioning of the feet or the supports has moreover proved to be expedient that the sockets each have a freely ending, formed in its outer diameter corresponding to the inner diameter of the aufzusteckenden foot and / or aufzusteckenden support section that an annular shoulder plugging axially limited and that the outer diameter of the annular shoulder corresponds to the outer diameter of the plugged-end of the foot and / or the support. In addition to an exact positioning of the foot or the support relative to the node is an elegant transition to the latter, for example by a the outer diameter of the plugged foot or the plugged support corresponding pipe section, which passes elegantly into the actual knot.

In a preferred, constructive embodiment, it is provided that the node or the parts of the knot are each formed integrally with nozzles or are. Excellent dimensional accuracy and stability, especially in a design of the node or the parts of the node as cast aluminum, is thus guaranteed. As alternatives, steel or an aluminum-steel composite can also be used.

Are, as preferred, provided two mutually rotatable parts of the node, these are expediently separated by an externally visible, horizontal center plane. It may then be provided in constructive development that the second, upper part has a lower side projecting axis which is rotatably mounted in a corresponding receptacle of the first, lower part. Such einzusteckende axis is structurally simple, but regularly meets the requirements, which may conveniently be further provided for easier turning, that on the axis to its free end indicative two annular shoulders are formed and that against the ring shoulders two bearings are fixed, in particular tapered roller bearings , Through the two bearings, the radial forces between the two parts of the knot are safely collected, preferably the second closest to the upper part of the bearing beyond only absorbs the axial load. The remoter, in the installed state lower bearing of regularly lower Diameter then requires no axial support, but only an overlap, for example by a cap.

The connection of the seat to the node is also largely non-binding according to the connection of the feet. To combine the advantages of the cantilever with the qualities of a four-legged frame with a Drehachsaufnahme, it is preferred that only two supports are provided, which are arranged extending from the node to the front corners of the seat, that the supports there each to an opposing arc are connected and that the seat is connected to the arches. A vertical deflection of the rear portion of the seat analogous to a cantilever is thus possible.

In a constructive, further embodiment it is provided that the sheets are curved twice and that are connected to the arches supporting the seat spars, with which the spars are then arranged lying parallel in a plane. In this way, in particular a tube frame is formed for the seat, on which a supporting, textile fabric, for example in the form of a prestressed, closed tube can be mounted. Alternatively, a seat plate or the like can be placed on the spars.

If a tubular frame is preferred, an upwardly pointing arch will be connected to the spars in an advantageous manner, wherein a backrest is connected to these arches. Comparable to the embodiment of the seat, the backrest may be connected to the upwardly facing arches connected struts, in particular formed again in the form of a wound up, biased tube.

If the seat is not formed by a self-supporting shell or the like, it has also proven to be expedient if transverse struts front and back arcs and / or spars are provided connecting. Due to this measure, the shape of the frame remains predetermined.

Accordingly, it can further be provided that a transverse strut connects the free ends of the struts and, moreover, that a U-shaped attachment is provided above the transverse strut. The U-shaped attachment can then serve as a head and / or neck support.

The further comfort of the chair according to the invention armrests are useful, which are preferably connected to the outside of a strut and a spar, wherein the armrest has an annular peripheral frame, wherein the frame has at least partially a tubular cross-section.

Conveniently, then an attachment is made such that the frame for fixing to the strut a keyhole-shaped recess and for fixing to the spar has two holes, wherein in the recess of the hat a stripping nut engages behind the wall of the frame and the shafts in the holes engage two Holmenfester screws, which are secured by holes in the frame by passing screws, expediently of below by screwed grub screws.

In the chair according to the invention, a device for braking and positioning of the axle with respect to the axis receiving receptacle is further provided, thus the seat against the feet, in which the deceleration and positioning proceeds almost noiseless.

A device for braking and positioning, which has fixedly arranged on the axis of a first ring of rod-shaped magnets, which has arranged in the receptacle a second ring of magnets receptive, wherein in at least one neutral position of the axis relative to the receptacle opposite magnets and tighten repel outside the neutral position, has the advantage that the magnetic forces, the axis brakes without contact during a rotation and positioned at a sufficiently low rotational speed. Noises do not arise as a result.

It can be provided that the axis-fixed ring is provided with magnets of the same orientation of the magnetic fields, in particular with four magnets in a 90 ° pitch. Surprisingly, it has been found that only four magnets evenly distributed over the circumference are already sufficient to decelerate and position the seat of a swivel chair relative to the second, pick-up-resistant ring of magnets.

For this purpose, the receptacle-fixed ring in the at least one neutral position with magnets of the same orientation Magnetic fields provided, wherein the alignment of the corresponding magnets of the axis fixed ring and are arranged over the circumference between the magnets of the neutral position of the receiving ring fixed magnets with reverse polarity. There, the magnets of the inner ring are repelled until, in a neutral position, they magnetically lock with the magnets of the receptacle-fixed ring.

It can further be provided that the receptacle-fixed ring has eight magnets of alternating polarity in a 45 ° division. With a minimum number of magnets, four for the axle fixed ring and eight for the receiving-resistant ring, a lock in neutral position is achieved in a 90 ° pitch.

In a constructive embodiment it is provided that a ring formed separately receives the magnets, in particular both rings are formed separately on the axis or in the receptacle are used. This can be in the form of a plastic ring, which has radial and / or axial pockets for receiving the magnets, wherein a bottom of the pocket keeps the magnets of the axis fixed ring from those of the receiving-resistant ring and vice versa.

It can be provided that the rings are formed axially superimposed, so that both rings can be formed substantially similar.

However, it is preferred that the rings are arranged coaxially, which saves considerable space in the axial direction and radial dimensions can be achieved, which in the Magnitude of a ball bearing, roller bearing or the like may be.

The setting of the axis fixed ring on the axis takes place in a simple manner, when the axis fixed ring has a polygonal opening and the axis has a limited by an annular shoulder portion with a corresponding cross section with the opening for a rotationally secure application of the ring. In particular, a square, in particular square or hexagonal opening with a section on the axis of corresponding cross-section is intended here.

Accordingly, the receiving-resistant ring may be formed on the outside angular. However, it is preferred that the receptacle-fixed ring has a round, outer socket, which is provided with axially extending grooves, engage in the lugs of the receptacle. The receptacle can thereby be provided with comparatively small radial dimensions.

In order to keep these radial dimensions further low, it is provided that the grooves are arranged lying between magnets. As a result, the ring material is weakened only to a small extent.

Fig. 1:

eine Seitenansicht eines Gestells eines Sitzmöbels nach der Erfindung,

Fig. 2:

eine Frontansicht,

Fig. 3:

eine Rückansicht,

Fig. 4:

eine isometrische Darstellung,

Fig. 5:

eine Ansicht von unten,

Fig. 6:

eine Ansicht von oben,

Fig. 7:

einen mit Sitz und Rückenlehne versehenen Stuhl nach der Erfindung,

Fig. 8:

in einer Seitenansicht gemäß Figur 1 in vergrößerter Alleinstellung einen Knoten,

Fig. 9:

den Knoten nach Figur 8 in einer Frontansicht,

Fig. 10:

eine Rückenaneicht,

Fig. 11:

eine Unteransicht,

Fig. 12:

eine Draufsicht,

Fig. 13:

einen Schnitt gemäß der Linie XIII, XIII, in Figur 12,

Fig. 14:

einen Schnitt gemäß der Linie XIV, XIV in Figur 12,

Fig. 15:

eine Frontansicht eines oberen Teils eines Knotens,

Fig. 16:

eine Unteransicht des oberen Teils gemäß Figur 15,

Fig. 17:

einen Schnitt durch ein oberes Teil, zentral durch einen Stutzen,

Fig. 18:

einen Schnitt durch ein unteres Teil,

Fig. 19:

eine isometrische Darstellung eines Kegelrollenlagers,

Fig. 20:

eine seitliche Darstellung desselben,

Fig. 21:

eine isometrische Darstellung eines äußeren Magnetrings,

Fig. 22:

eine Draufsicht auf diesen,

Fig. 23:

eine isometrische Darstellung eines inneren Magnetrings,

Fig. 24:

eine Draufsicht auf denselben,

Fig. 25 - Fig. 30:

ein weiteres Ausführungsbeispiel eines Stuhl,

Fig. 31 - Fig. 36:

einen Stuhl ohne Armlehnen und

Fig. 37 - Fig. 42:

eine weitere Variante.

The invention will be explained in more detail with reference to the drawing, in which only one embodiment is shown schematically. In the drawing shows:

Fig. 1:

a side view of a frame of a chair according to the invention,

Fig. 2:

a front view,

3:

a rear view,

4:

an isometric view,

Fig. 5:

a view from below,

Fig. 6:

a view from above,

Fig. 7:

a seat and backrest chair according to the invention,

Fig. 8:

in a side view according to FIG. 1 in enlarged isolation a knot,

Fig. 9:

after the node FIG. 8 in a front view,

Fig. 10:

a back,

Fig. 11:

a bottom view,

Fig. 12:

a top view,

Fig. 13:

a section along the line XIII, XIII, in FIG. 12 .

Fig. 14:

a section along the line XIV, XIV in FIG. 12 .

Fig. 15:

a front view of an upper part of a node,

Fig. 16:

a bottom view of the upper part according to FIG. 15 .

Fig. 17:

a section through an upper part, centrally through a nozzle,

Fig. 18:

a section through a lower part,

Fig. 19:

an isometric view of a tapered roller bearing,

Fig. 20:

a side view of the same,

Fig. 21:

an isometric view of an outer magnet ring,

Fig. 22:

a top view of this,

Fig. 23:

an isometric view of an inner magnet ring,

Fig. 24:

a plan view of the same,

Fig. 25 - Fig. 30:

another embodiment of a chair,

Fig. 31 - Fig. 36:

a chair without armrests and

FIGS. 37-42:

another variant.

Based on FIGS. 1 to 7 a chair 1 is explained as seating according to the invention.

The chair 1 has four feet 2-5, which stand up on a floor 6. The feet stretch 2-5 between the bottom 6 and its longitudinal axes at an angle of about 45 °. To compensate for this angle, the feet 2-5 are provided with bent ends 7-10, so that the ends 7-10 are perpendicular to the floor 6. Due to this measure, it is possible to provide the feet 2-5 each with a plate having height adjustment 11-14.

In addition or as an alternative to the plates, rollers may still be provided on the height adjustments 11-14.

The feet 2-5 are connected to a central node 15, which is positioned approximately midway between the bottom 6 and a seat 16 in height and, in a plan view gem. Fig. 5 , also centrally under this.

The node 15 is divided into two in a horizontal center plane 17, wherein a first, lower part 18 is firmly positioned over the connected feet 2-5 relative to the bottom 6. Compared to the first part 18, a second part 19 is rotatable about a vertical axis 20.

Corresponding to the angle of about 45 ° between the feet 2-5 and the bottom 6, the feet 2-5 are connected at a corresponding angle to the median plane 17 in a plane to the first, lower part 18 of the node 15.

At the same angle two supports 21,22 are connected in one plane to the second, upper part 19 of the node 15, so that in the side view acc. Fig. 1 the foot 2 and the support 21 and in the front view acc. Fig. 2 the feet 3,4 and the supports 21,20 are lying on a line. Accordingly, in the plan view gem. Fig. 5 the supports 21, 22 above the feet 3, 4

The feet 2-5 and the two supports 21,22 are similar, for example, by chromed steel tubes tapering conically from the node 15 away.

From the node 15, the two supports 21,22 spread to the front corners 23,24 of the seat 16. There, the supports 21,22 are connected to bows 25,26, which in opposite directions to the inclination of the supports 21,22 a allow about horizontal connection of two spars 27,28, which extend through a second curvature of the sheets 25,26 also lying parallel in a plane.

To the spars 27,28 two more sheets 29,30 are connected, which point upwards and to which a backrest 31 is connected. In the embodiment, for the formation of the backrest 31 to the sheets 29,30 upwardly directed struts 32,33 are connected, which are connected on the upper side by a slightly curved cross member 34. Further transverse struts 35, 36 connect the bends 25, 26 and 29, 30 in the front or rear region of the seat 16. By suitably introduced curvatures of the struts 32,33 the Brgonometrie is still taken into account.

For example, a textile fabric in the form of a closed tube with bias can be mounted on the tubular frame formed in this way. Thus, on the one hand the seat 16 and on the other hand, the backrests 31 are formed. In this case, further leather-related, firmly sewn on the fabric foam pads in the region of the seat 16 and the backrest 31 may still be provided, wherein, as FIG. 7 shows, between the seat 16 and backrest 31, a gap 37 may remain.

Other options may be self-supporting seats, full seats or the like.

In the embodiment according to the FIGS. 1 to 7 is still a U-shaped attachment 38 is provided, the free legs 39,40 can be inserted on the upper side of the cross member 34 or otherwise suitably secured. Based on the backrest 31, such an attachment 38 serves as a head and / or neck support.

At the spars 27,28 and the respective connected via the sheets 29,30 struts 32,33 two armrests 41,42 are still connected outside, each having an annular peripheral frame with an at least partially tubular cross-section. The frame may be provided for attachment to the struts 32,33 each with a schlüsselellpchförmigen recess into which a hat of a stripping nut the wall of the frame is inserted behind. Furthermore, the determination is carried out by the engagement of the shafts in each case two Holmenfester screws in holes in the lower frame portions of the armrests 41,42, which can be secured by underside holes in the lower frame sections passing through screws, preferably grub screws.

The FIGS. 8 to 12 show different views of the node 15. The side view according to FIG. 8 corresponds with the figure according to FIG. 1 ,

The node 15 has a lower, first part 18 and an upper, second part 19, which can be rotated about the vertical axis 20 against each other. Both parts 17,18 are each accurately cast from an aluminum.

For the connection of the feet 2-5, the lower part 18 is provided with four ports 43-46. On these legs 43-46, the tube-like feet 2-5 are pushed. For this purpose, the nozzles 42-45 are provided with freely ending, in their outer diameters corresponding to the inner diameter of the feet 2-5 formed sections 47-50, which are each bounded by an annular shoulder 51-54 axially. The outer diameter of these annular shoulders 51-54 corresponds to the outer diameter of the feet 2-5, so that a flush transition to the lower part 18 of the node 15 is given.

The lower part 18 of the node 15 is formed symmetrically to the vertical planes through the axes of the sockets 42,44 and 43,45.

Corresponding to the lower part 18 and the upper part 19 of the node 15 is integrally formed with two nozzles 55,56 of a cast aluminum. The connection of the supports 21,22 is carried out according to the feet 2-5. Since only two stubs 55,56 are provided for the connection of the supports 21,22, the upper part 19 is symmetrical only to a median plane between the stub 55,56

For the rotation of the upper part 19 against the lower part 18, the upper part 19 on an underside projecting axis 57, see Figures 15,17 , which is formed integrally with the upper part 19. The axis 57 is in a corresponding receptacle 58 of the lower part 18, cf. FIG. 18 , rotatably mounted, cf. Fig. 13 . 14 ,

For this purpose, two annular shoulders 59,60 are formed on the axis 57 by two gradations, which serve as a stop for two tapered roller bearings 61,62, of which the tapered roller bearing 61 with the larger inner diameter in the FIGS. 19 and 20 again shown separately. Since the tapered rollers 63 with respect to the radial socket 64 of the tapered roller bearing 60 an axial projection 65 still have, the bottom 66 of the upper part 19 still has an annular recess 67 for receiving this projection 65.

The cuts according to the Figures 13 . 14 further show that only the upper tapered roller bearing 61 can transmit axial forces from the upper part 19 to the lower part 18 of the knot 15. The second lower tapered roller bearing 62 merely catches radially in addition to the tapered roller bearing 61 Forces up. An axial support is not possible due to the formation of the receptacle 58. The tapered roller bearing 62 is only covered by a cap 68, which is fixed with a central screw 69, which has a receptacle 70 for an Allen wrench. Tightened with a predetermined torque, the two parts 18,19 of the node 15 are braced against each other.

Between the two tapered roller bearings 61,62 a device 71 for braking and positioning of the axis 57 relative to the receptacle 58 is still arranged.

Comparable with the tapered roller bearings 61, 62 is an inner, axle-resistant ring 72 with pockets 73 for receiving magnets 74, cf. FIGS. 23 and 24 , positioned against an annular shoulder 75 of the axis 57. The portion 76 of the axis 57 between the annular shoulder 75 and the free end has a non-round, here square cross section with rounded corners. Corresponding thereto, the ring 72 is provided with a central, square opening 77, so that the ring 72 is non-rotatably mountable on the axis 57.

The axis fixed ring 72 is formed with four pockets 73 for four magnets 74 in a 90 ° -partition, the magnetic fields are polarized similarly polarized radially.

The axis fixed ring 72 is of a receiving fixed ring 78 with pockets 79 for 8.0 magnets in accordance with Figures 21,22 surrounded coaxially. In its eight pockets 79 eight magnets 80 are with alternating polarity of the magnetic fields arranged. As a result, it comes in a 90 ° division to a tightening of magnets 74 and 80, since the polarity of the magnetic fields is radially aligned and thus different poles face each other. Upon rotation of the ring 72 with the seat 16 then opposite poles are opposite and there is a repulsion. As a result, the seat is rotated in a neutral position in a 90 ° pitch and locked in this magnetically.

It will then, with appropriate orientation of the receiving-resistant ring 78, the seat 16 are positioned so that legs 2-5 and supports 21,22 are aligned in a line in each view.

For the exact positioning of the ring 78, this is radially outwardly provided with axially extending grooves 81 in an outer frame 85, in the receiving-fixed lugs 82 engage. In order not to have to perform the ring 78 material significantly stronger, the grooves 81 between the magnet 80 and pockets 79 are arranged.

Due to the changing polarity of the magnets 80, the ring 78 can be arbitrarily inserted into the receptacle 58 at a 90 ° pitch of the grooves 81.

The receptacle-fixed ring 78 has a larger diameter than the lower tapered roller bearing 62. Accordingly, the receptacle 58 has a recess 83 for the braking and positioning device 71, which is larger in diameter As a result of this measure, the upper tapered roller bearing 61 is first applied to the shaft 57 and the axle-fixed, inner ring 72 during assembly. If the outer, receptacle-fixed ring 78 is inserted into the recess 84 of the receptacle 58, For example, the upper part 19 with upper tapered roller bearing 61 and inner ring 72 can be inserted into the receptacle 58. From below then the second tapered roller bearing 68 is mounted on the free end of the shaft 57.

Based on Figures 25-30 another embodiment of a chair 86 will be explained. Also in the chair 86 two bars 87,88 connected by arches 89,90 struts 91, 92 connected by only three cross struts 93, 94, 95. The comfort serve the struts 91,92 designed significantly longer, bringing an essay 38 according to FIG. 2 unnecessary.

The lower part 96 corresponds to the initially explained.

The frame-like design of the chair according to the invention makes it possible by simple covering a seat 97 and, for example. Sectionally form backrest surfaces 98.99, compare Figures 31-36 ,

The one in these Figures 31-36 illustrated chair 100 is executed without armrests and with a comparatively low backrest 101 and understand, for example, with a net covering.

In the in the Figures 37-42 illustrated chair 101 with high back 102 and armrests 103,104, the strained surfaces are still covered with leather pads 105-107.

Diverse deviating from this design options, especially with regard to the padding of the seat or back surfaces are due to the construction of the chair according to the invention continue to.

Due to its technically-transparent but not technoid appearance, chair 1 according to the invention has a wide range of uses, from the conference to the waiting area to its use in the private office or dining room.

LIST OF REFERENCE NUMBERS

1.

chair

Second

foot

Third

foot

4th

foot

5th

foot

6th

ground

7th

cranked end

8th.

cranked end

9th

cranked end

10th

cranked end

11th

height adjustment

12th

height adjustment

13th

height adjustment

14th

height adjustment

15th

node

16th

Seat

17th

midplane

18th

first, lower part

19th

second, upper part 20th axis

21st

support

22nd

support

23rd

front corner

24th

front corner

25th

bow

26th

bow

27th

Holm

28th

Holm

29th

bow

30th

bow

31st

backrest

32nd

strut

33rd

strut

34th

crossmember

35th

crossmember

36th

crossmember

37th

gap

38th

essay

39th

leg

40th

leg

41st

armrest

42nd

armrest

43rd

Support

44th

Support

45th

Support

46th

Support

47th

section

48th

section

49th

section

50th

section

51st

annular shoulder

52nd

annular shoulder

53rd

annular shoulder

54th

annular shoulder

55th

Support

56th

Support

57th

axis

58th

admission

59th

annular shoulder

60th

annular shoulder

61st

Tapered roller bearings

62nd

Tapered roller bearings

63rd

Tapered roller

64th

version

65th

head Start

66th

bottom

67th

annular recess

68th

cap

69th

screw

70th

admission

71st

contraption

72nd

ring

73rd

bag

74th

magnet

75th

annular shoulder

76th

section

77th

perforation

78th

ring

79th

bag

80th

magnet

81st

groove

82nd

nose

83rd

recess

84th

recess

85th

version

86th

chair

87th

Holm

88th

Holm

89th

bow

90th

bow

91st

strut

92nd

strut

93rd

crossmember

94th

crossmember

95th

crossmember

96th

undercarriage

97th

seat

98th

Backrest surface

99th

Backrest surface

100th

chair

One hundred and first

chair

102nd

backrest

103rd

armrest

104th

armrest

105th

leather finish

106th

leather finish

107th

leather finish

Claims (38)

1. Seating furniture comprising a joint (15) formed in two parts, which is arranged freely below a seat (16), from which a first part (18) and a second part (19) are pivotable with respect to one another about a vertical axis (20), wherein the feet (2-5) are connected to the first part (18) and the supports (21, 22) are connected to the second part (19), characterised in that two supports (21, 22) are provided, that respectively one end of one support (21, 22) is connected to the second part (19) of the joint (15), that the other end is arranged to extend at an angle between 30° and 55° with respect to a horizontal middle plane (17) of the joint (15) towards the front corners (23, 24) of the seat (16), that there each support is connected to an oppositely directed arc (25, 26), where the arcs (25, 26) are arranged in front of the seat (16).
2. The seating furniture according to one or more of the preceding claims, characterised in that the feet (2-5) are connected at an angle between 30° and 55° with respect to a horizontal middle plane (17) of the joint (15) on this joint.
3. The seating furniture according to one or more of the preceding claims, characterised in that the feet (2-5) have oppositely directed angled ends (7-10).
4. The seating furniture according to one or more of the preceding claims, characterised in that the ends (7-10) are each provided with a height adjustment (11-14) and/or rollers.
5. The seating furniture according to one or more of the preceding claims, characterised in that four feet (2-5) are provided, which are connected to the joint (15) in one plane.
6. The seating furniture according to one or more of the preceding claims, characterised in that the supports (21, 22) are connected to the joint (15) in one plane.
7. The seating furniture according to one or more of the preceding claims, characterised in that the supports (21; 21, 22) are arranged in a line with the feet (2; 4, 3) in a side view and/or in a front view.
8. The seating furniture according to one or more of the preceding claims, characterised in that the feet (2-5) and the supports (21, 22) are configured in the same way.
9. The seating furniture according to one or more of the preceding claims, characterised in that the feet (2-5) and/or supports (21, 22) taper away from the joint (15).
10. The seating furniture according to one or more of the preceding claims, characterised in that the feet (2-5) and/or the supports (21, 22) are configured to be tubular and are pushed onto supports (43-46; 55, 56) fixed to the joint.
11. The seating furniture according to one or more of the preceding claims, characterised in that the supports (43-46; 55, 56) each have a free-ending section (47-50) configured in its outside diameter corresponding to the inside diameter of the foot (2-5) to be pushed on and/or the support (21, 22) to be pushed on, that an annular shoulder (51-54) axially delimits the pushing-on and that the outside diameter of the annular shoulder (51-54) corresponds to the outside diameter of the pushed-on end of the foot (2-5) and/or the support (21, 22).
12. The seating furniture according to one or more of the preceding claims, characterised in that the joint or the parts (18, 19) of the joint (15) is/are each formed in one piece with supports (43-46; 55, 56).
13. The seating furniture according to one or more of the preceding claims, characterised in that the joint or the parts (18, 19) of the joint (15) is/are each made of cast aluminium.
14. The seating furniture according to one or more of the preceding claims, characterised in that the joint or the parts of the joint is/are each made of a steel.
15. The seating furniture according to one or more of the preceding claims, characterised in that the parts (18, 19) of the joint (15) are separated by an externally visible, horizontal central plane (17).
16. The seating furniture according to one or more of the preceding claims, characterised in that the second, upper part (19) has an axle (57) projecting on the underside, which is rotatably mounted in a corresponding receptacle (58) of the first lower part (18).
17. The seating furniture according to one or more of the preceding claims, characterised in that two annular shoulders (59, 60) are formed on the axle (57) pointing towards its free end and that two bearings (61, 62) are fixed towards the annular shoulders (59, 60).
18. The seating furniture according to one or more of the preceding claims, characterised in that the bearings (61, 62) are conical roller bearings.
19. The seating furniture according to one or more of the preceding claims, characterised in that the bearing (60) nearest the second upper part (19) receives the axial load.
20. The seating furniture according to one or more of the preceding claims, characterised in that the arcs (25, 26) are doubly curved and that spars (27, 28) supporting the seat (16) are connected to the arcs (25, 26).
21. The seating furniture according to claim 20, characterised in that the spars (27, 28) are arranged to run parallel.
22. The seating furniture according to one or more of the preceding claims, characterised in that respectively one upward-pointing arc (29, 30) is connected to the spars (27, 28) and that a backrest (31) is connected to the arcs (29, 30).
23. The seating furniture according to one or more of the preceding claims, characterised in that struts (32, 33) are connected to the upward-pointing arcs (29, 30) and the backrest (31) is connected to the struts (32, 33).
24. The seating furniture according to one or more of the preceding claims, characterised in that transverse struts (35, 36) are provided connecting arcs (25, 26; 29, 30) and/or spars at the front and rear side.
25. The seating furniture according to one or more of the preceding claims, characterised in that one transverse strut (34) connects the free ends of the struts (32, 33) and that a U-shaped attachment (38) is provided above the transverse strut (34).
26. The seating furniture according to one or more of the preceding claims, characterised in that an armrest (41, 42) is connected externally to a strut (32, 33) and to a spar (27, 28) and that the armrest (41, 42) has a frame running around in an annular manner which is configured to be tubular at least in sections.
27. The seating furniture according to one or more of the preceding claims, characterised in that the frame has a keyhole-shaped recess for fastening to the strut (32, 33), that the frame has two holes for fastening to the spar (27, 28), that in the recess the cap of a nut fixed to the strut grips behind the wall of the frame, that the shafts of two screws fixed to the spar engage in the holes and that the shafts are secured by holes in screws passing through the frame.
28. The seating furniture according to one or more of the preceding claims, characterised by a braking and positioning device (71) which comprises a first ring (72) of rod-shaped magnets (74) arranged in an axially fixed manner on the axle (57), which comprises a second ring (78) of magnets (80) arranged in the receptacle (58) in a fixed manner, wherein opposing magnets (74, 80) attract in at least one neutral position of the axle (57) with respect to the receptacle (58) and repel outside the neutral position.
29. The seating furniture according to one or more of the preceding claims, characterised in that the axially fixed ring (72) is provided with magnets (74) having the same alignment of the magnetic fields.
30. The seating furniture according to claim 30, characterised in that four magnets (74) are provided in one 90° division.
31. The seating furniture according to one or more of the preceding claims, characterised in that the ring (78) fixed in the receptacle in the at least one neutral position is provided with magnets (80) having the same alignment of the magnetic fields, that the alignment corresponds to that of the corresponding magnets (74) of the axially fixed ring (72) and that magnets (80) having opposite polarity are arranged over the circumference between the magnets (80) of the neutral position of the ring (78) fixed in the receptacle.
32. The seating furniture according to claim 32, characterised in that the ring (78) fixed in the receptacle comprises eight magnets (80) of alternating polarity on one 45° division.
33. The seating furniture according to one or more of the preceding claims, characterised in that one ring (72, 78) formed separately receives the magnets (74, 80).
34. The seating furniture according to one or more of the preceding claims, characterised in that the rings are formed in an axially overlapping manner.
35. The seating furniture according to one or more of claims 29 to 34, characterised in that the rings (72, 78) are arranged coaxially.
36. The seating furniture according to one or more of the preceding claims, characterised in that the axially fixed ring (72) has an angular opening (77) and that the axle (57) is provided with a section (76) delimited by an annular shoulder (75) having a cross-section corresponding to that of the opening (77) for an anti-twist attachment of the ring (72).
37. The seating furniture according to one or more of the preceding claims, characterised in that a round external socket (85) of the ring (78) fixed in the receptacle is provided with axially running grooves (81) into which lugs (82) of the receptacle (58) engage.
38. The seating furniture according to claim 37, characterised in that the grooves (81) are arranged to lie between magnets (80).

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