Source: https://patents.google.com/patent/DE102014103780B3/en
Timestamp: 2020-08-08 12:51:21
Document Index: 539178974

Matched Legal Cases: ['art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3']

DE102014103780B3 - chair - Google Patents
DE102014103780B3
DE102014103780B3 DE102014103780.4A DE102014103780A DE102014103780B3 DE 102014103780 B3 DE102014103780 B3 DE 102014103780B3 DE 102014103780 A DE102014103780 A DE 102014103780A DE 102014103780 B3 DE102014103780 B3 DE 102014103780B3
DE102014103780.4A
2014-03-19 Application filed by Wilkhahn Wilkening and Hahne GmbH and Co KG filed Critical Wilkhahn Wilkening and Hahne GmbH and Co KG
2015-06-18 Publication of DE102014103780B3 publication Critical patent/DE102014103780B3/en
A chair with a deformable seat shell (2), which forms a seat part (3) and a backrest (4), and a frame (1), wherein the seat part (3) has a first pivot (5) and the backrest (4) via a second pivot (6) are connected to the frame (1), wherein the hinges (5, 6) by a deformation of the seat (2) conditional twisting of the seat part (3) and the backrest (4) relative to the frame (1) is characterized in that the second hinge (6) is connected to the backrest (4) centrally with respect to the transverse direction of the chair.
A generic chair with a (in the context of a proposed use) deformable seat shell, which forms a seat part and a backrest (preferably in one piece), and a frame, wherein the seat part via a first pivot and the backrest are connected via a second pivot to the frame , wherein the hinges enable a rotation of the seat part and the backrest relative to the frame caused by a deformation of the seat shell, is inventively characterized in that the second pivot joint is connected centrally with the backrest with respect to the transverse direction of the chair.
In this case, the "transverse direction" of the chair means any direction extending from one side of the chair (in particular a projection of the chair into a vertically aligned plane adjacent to this side of the chair) towards the other side of the chair (in particular a projection the chair extends into a vertically aligned plane adjacent said other side of the chair).
The embodiment of the chair according to the invention thus provides an arrangement of the two pivot joints connecting the seat shell to the frame in the sagittal plane of a user of the chair. This makes it possible to achieve the desired mobility in conjunction with the deformable seat shell, wherein the number of parts required for the formation of the frame in comparison to that of the DE 10 2011 001 811 A1 known chair is reduced. In particular, instead of the two, a backrest support forming struts, which are connected in the chair according to DE 10 2011 001 811 A1 via two pivot joints with a seat base and the backrest, a one-piece backrest support can be used, which via only a hinge, preferably may be formed in the form of a ball joint, is connected to the backrest. In addition, it can be provided that the backrest support also integrates the first pivot joint, via which the frame is connected to the seat part of the seat shell.
In a preferred embodiment of the chair according to the invention can be provided that the seat part still has at least one bearing with the Frame is connected, wherein the bearing is designed such that this obstructs a rotation of the seat part about an aligned in the longitudinal direction of the chair axis. As a result, the seat shell is given stability in the region of the seat part, which hinders lateral tilting of the seat shell in the region of the seat front edge in the event of an off-center loading by the user. With appropriate positioning of the bearing, especially in the vicinity of the seat leading edge, this does not hinder the intended deformability of the seat in the context of the use of the chair.
1 a side view of a chair according to the invention in a first embodiment;
2 : a view from behind on the chair according to the 1 with undeformed seat shell;
3 : a view according to the 2 with deformed seat of the chair;
4 : a view from above on the chair according to the 1 with undeformed seat shell;
5 : a view according to the 4 with deformed seat of the chair;
6 a side view of a chair according to the invention in a second embodiment in an upright position of the seat;
7 : a view according to the 6 in the reclined position of the seat pan;
8th a side view of a chair according to the invention in a third embodiment in an upright position of the seat;
9 : a view according to the 8th in the reclined position of the seat pan;
10 : a view from behind on a chair according to the 6 to 9 with undeformed seat shell;
11 : a view according to the 10 with deformed seat shell;
12 : a view from above on a chair according to the 6 to 9 with undeformed seat in an upright position;
13 : a view according to the 12 in a deformed seat and in a reclined position.
The in the 1 to 5 illustrated chair includes a frame 1 and one with the frame 1 connected seat shell 2 ,
The frame 1 is essentially rigid. This is thus designed so that it does not functionally deform in a proper use of the chair. The frame 1 can be formed in one piece, for example, welded together pipes. It forms, for example, as shown, four feet, over which the chair is placed on a substrate.
The seat shell is over two swivel joints 5 . 6 with the frame 1 connected. Here is a first pivot 5 near the seat front edge 7 the seat shell 2 arranged. Regarding the transverse direction of the chair is the first pivot 5 centered and thus positioned approximately in the sagittal plane of a user of the chair. The first swivel 5 allows for twisting with this swivel 5 connected portion of the seat pan 2 , specifically essentially the entire seat part 3 , relative to the corresponding section of the frame 1 (the seat base 8th ) about a first axis of rotation 9 , This first axis of rotation 9 runs in the vertical direction of the chair. Specifically, this is approximately vertically aligned (standing on a horizontal surface chair). The first swivel 5 may be configured such that one with the seat base 8th (or the seat part 3 ) connected pin 10 rotatable in one with the seat part 3 (or the seat base 8th ) connected sleeve 11 is stored.
A second pivot 6 connects the seat shell 2 in the area of the backrest 4 with a backrest support 12 of the frame 1 , Here is the second pivot 6 centered on the transverse direction of the chair and thus - as well as the first hinge 5 - Located approximately in the sagittal plane of a user of the chair. The second hinge 6 is designed as a ball joint. This allows therefore a rotation of the backrest 4 relative to the backrest support 12 one Variety of axes, including at least one extending in the longitudinal direction of the chair second axis of rotation 13 ,
The inventive storage of the seat 2 allows a caused by a shift in weight of a user deformation of the seat 2 in which these in the transition from the seat part 3 to the backrest 4 is moved to one side while the seat leading edge 7 and the backrest edge 14 be inclined in the direction of the other side (cf. 3 and 11 ).
The seat part 3 the seat shell 2 is still over two camps 15 with the frame 1 connected. One camp each 15 is spaced transversely of the chair from the first pivot bearing 5 arranged. With regard to the longitudinal direction of the chair are the bearings 15 at the height of the first pivot bearing 5 and the seat leading edge 7 , The two camps 15 are formed such that they support at least one load against the vertical direction, ie from top to bottom, ie prevent. This will cause a twisting of the front portion of the seat part 3 about an aligned in the longitudinal direction of the chair axis and thus tilting to a side of a user together with the seat 2 prevented. Camps 15 are designed such that a relative mobility of the seat part 3 to the frame 1 in the field of bearings 15 in a plane which extends in the longitudinal and transverse directions of the chair, is possible (see. 4 and 5 such as 12 and 13 ). This will the desired deformability of the seat 2 through the camps 15 not disabled. This mobility of the bearings 15 can be achieved by each two bearing parts slidably rest on one another and thereby form a corresponding slide bearing. It can be a bearing part with the frame 1 connected or formed by this and the other bearing part with the seat part 3 the seat shell 2 be connected or formed by this.
Unless the bearings 15 each also a load in the vertical direction, ie, should support from bottom to top, it can be provided that one of the bearing parts of each camp 15 forms a slot through which extends a guide pin of the other bearing part, wherein the edge of the slot engages at least on one side, preferably two sides in a groove formed by the guide pin in its jacket groove.
The in the 6 and 7 such as 10 to 13 The chair shown differs from that in the 1 to 5 represented chair on the one hand by the integration of a tilt mobility for the seat 2 , This is the backrest support 12 of the frame 1 structurally from the seat base 8th of the frame 1 formed separately and via a third pivot 16 around a third axis of rotation 17 extending transversely of the chair, rotatable with the seat base 8th connected. The third axis of rotation 17 runs near the first swivel joint 5 , In particular, it can be provided that the third axis of rotation 17 the high-level, from the first pivot 5 trained first axis of rotation 9 cuts.
The backrest carrier 12 is L-shaped, wherein the free end of the one leg via the second pivot 6 with the backrest 4 the seat shell 2 and the free end of the other leg over the third pivot 16 with the seat base 8th connected is. The backrest carrier 12 but may also be formed as arcuate as well.
To the tilt mobility of the seat shell 2 not to hinder, are the first rotary joint 5 and the second pivot 6 designed so that this is a twisting of the corresponding section of the seat pan 2 relative to the corresponding section of the frame 1 in each case also about a fourth axis of rotation aligned in the transverse direction of the chair 18 or fifth axis of rotation 19 enable. This rotation results in the second hinge 6 from its design as a ball joint. For the first swivel 5 However, this rotation results from the deformability of the seat, as in the 6 and 7 is shown. But there is also the possibility of the first swivel joint 5 as a ball joint or otherwise with two around the respective axes of rotation 9 . 18 to form movably interconnected hinge parts. In particular, in one embodiment of the first rotary joint 5 in which this one with the seat base 8th (or the seat part 3 the seat shell 2 ) connected pin 10 that rotates in one with the seat part 3 (or the seat base 8th ) connected sleeve 11 is mounted, also be provided that the pin 10 (or the sleeve 11 ) is connected to a cross member, at the end of which also the corresponding end of the L-shaped backrest support 12 attacks. In this case, the cross member rotatably in the seat base 8th be stored while the backrest wearer 12 and / or the pin 10 (or the sleeve 11 ) can firmly attack on the cross member. The one in the seat base 8th rotatably mounted cross member in this case forms the third pivot 16 and part of the first pivot 5 out. It is also possible that the cross member firmly in the seat base 8th is integrated while the backrest support 12 and the pin 10 (or the sleeve 11 ) are rotatably mounted on this.
By the distance of the third axis of rotation 17 from the one of the first swivel 5 formed, extending in the transverse direction of the chair fourth axis of rotation 18 the (direct) distance between the fourth axis of rotation changes 18 and the second pivot bearing 6 when leaning back the seat 2 , This leads to a deformation of the seat pan 2 in which there is a between the seat part 3 and the backrest 4 formed angle α increases (α 1 <α 2 ).
The in the 6 and 7 such as 10 to 13 shown chair is also designed as a swivel chair. This is the seat base 8th of the frame 1 over a fourth pivot 20 around a sixth axis of rotation which extends in the vertical direction of the chair and which is concretely oriented approximately vertically 21 rotatable with a foot part only partially shown 22 of the frame 1 connected.
The in the in the 8th and 9 such as 10 to 13 The chair shown differs from that in the 6 and 7 such as 10 to 13 represented chair in particular by an additional kinematics, which ensures that a reclining of the seat pan 2 with a lift (in the vertical direction) of the first pivot 5 and thus the seat leading edge 7 accompanied.
This is the third hinge 16 over which the backrest wearer 12 with the seat base 8th is connected, arranged set back. They are also on the same end as the third swivel joint 16 two more (one on each side of the backrest support 12 ) Bars 23 around a seventh axis of rotation 24 rotatable with the backrest support 12 connected. Here is the seventh axis of rotation 24 from that of the third pivot 16 trained third axis of rotation 17 spaced apart.
The bars 23 extend to one end of each one lever 25 , with which this around an eighth axis of rotation extending in the transverse direction of the chair 26 are rotatably connected. The other end of the lever 25 is about a ninth axis of rotation extending in the transverse direction of the chair 27 rotatable with the seat base 8th connected. Thus, there is also a distance between the eighth axis of rotation 26 and the ninth axis of rotation 27 , Here is the ninth axis of rotation 27 positioned roughly like the third axis of rotation 17 in the chair according to the 6 and 7 ,
The first swivel 5 is over a crossbeam with the two rods 23 connected near the eighth axis of rotation. However, this can also, again near the eighth axis of rotation, with the two levers 25 be connected. Through this connection of the first swivel joint 5 in conjunction with the distances between the third axis of rotation 17 and the seventh axis of rotation 24 on the one hand and the eighth axis of rotation 26 and the ninth axis of rotation 27 are formed on the other hand, results in the desired, to a tilt adjustment of the seat 2 coupled height adjustment of the first pivot bearing 5 and thus the seat leading edge 7 ,
Also with the chair according to the 8th and 9 performs a reclining of the seat pan 2 to an enlargement of a formed between the seat part and the backrest angle α (α 1 <α 2 ).
Chair with a deformable seat shell ( 2 ), a seat part ( 3 ) and a backrest ( 4 ) and a frame ( 1 ), wherein the seat part ( 3 ) via a first pivot ( 5 ) and the backrest ( 4 ) via a second pivot ( 6 ) with the frame ( 1 ), the swivel joints ( 5 . 6 ) by deforming the seat pan ( 2 ) conditional rotation of the seat part ( 3 ) and the backrest ( 4 ) relative to the frame ( 1 ), characterized in that the second pivot ( 6 ) centrally with respect to the transverse direction of the chair with the backrest ( 4 ) connected is.
Chair according to claim 1, characterized in that the first pivot ( 5 ) a twisting about an aligned in the vertical direction of the chair first axis of rotation ( 9 ).
Chair according to claim 1 or 2, characterized in that the seat part ( 3 ) via at least one warehouse ( 15 ) with the frame ( 1 ), the bearing ( 15 ) is designed such that this a rotation of the seat part ( 3 ) obstructed by an axis oriented in the longitudinal direction of the chair.
Chair according to claim 3, characterized in that the bearing ( 15 ) in the transverse direction of the chair spaced from the first pivot ( 5 ), wherein two bearing parts are displaceable relative to each other in a plane extending in the transverse direction and longitudinal direction of the chair.
Chair according to at least one of the preceding claims, characterized in that a via the second pivot ( 6 ) with the backrest ( 4 ) connected backrest support ( 12 ) of the frame ( 1 ) via a third pivot ( 16 ) about an axis of rotation oriented in the transverse direction of the chair ( 17 ) rotatable with a via the first pivot ( 5 ) with the seat part ( 3 ) associated seat base ( 8th ) of the frame ( 1 ) connected is.
Chair according to claim 5, characterized in that it is adjustable between at least one upright, first position and a zurückneeigten, second position, wherein an angle (α) between the seat part ( 3 ) and backrest ( 4 ) is greater in the second position than in the first position.
Chair according to claim 5 or 6, characterized in that the backrest support ( 12 ) Is L-shaped or arcuate, wherein a first leg of the L-shaped backrest support ( 12 ) or a first half of the arched backrest support via the third pivot ( 16 ) with the seat base ( 8th ) and a second leg of the L-shaped backrest support ( 12 ) or a second half of the arcuate backrest support via the second pivot ( 6 ) with the backrest ( 4 ) connected is.
Chair according to at least one of the preceding claims, characterized in that the first pivot ( 5 ) a twisting of the seat part ( 3 ) about an axis of rotation oriented in the transverse direction of the chair ( 18 ) and / or the second pivot ( 6 ) a rotation of the backrest about an aligned in the transverse direction of the chair axis of rotation ( 19 ).
Chair according to Claim 5 or one of the claims dependent on Claim 5, characterized in that the frame ( 1 ) is designed such that a rotation of the backrest support ( 12 ) about the axis of rotation ( 17 ) of the third rotary joint ( 16 ) to a movement of a seat leading edge ( 7 ) in the vertical direction of the chair.
Chair according to claim 9, characterized in that the seat part ( 3 ) is fixed to a cross member, wherein the cross member with a lever ( 25 ) or a pole ( 23 ) and the lever ( 25 ) rotatable with the seat base ( 8th ) and a rotational movement of the lever ( 25 ) relative to the seat base ( 8th ) over the pole ( 23 ) with a rotational movement of the backrest support ( 12 ) is coupled.
Chair according to at least one of the preceding claims, characterized in that the first pivot ( 5 ) in which a seat leading edge ( 7 ) comprising half of the seat part ( 3 ) is arranged.
Chair according to at least one of the preceding claims, characterized in that the second pivot ( 6 ) is located above the center of gravity of a user.
Chair according to at least one of the preceding claims, characterized in that one over the first pivot ( 5 ) with the seat part ( 3 ) associated seat base ( 8th ) of the frame ( 1 ) via a rotary joint ( 20 ) with a foot part ( 22 ) of the frame ( 1 ) connected is.
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2014-03-19 R012 Request for examination validly filed
2015-03-03 R018 Grant decision by examination section/examining division