DE102011014067A1 - Seating furniture e.g. armchair, has functional unit whose functional surfaces are operatively connected with joint bearings of pivot supports - Google Patents

Abstract

The seating furniture (10) has frame (12) and opposite movably mounted functional unit (14) having functional surfaces (20,22) which are mutually arranged at fixed angle. The functional unit is set in either of functional positions in relative to frame so that functional surfaces serve as seating surface and beat rest respectively. The hinge module units (16,18) have four-joint with bearing supports and pivot posts defined by four articulated bearings. The preset joint bearings of the pivot supports are operatively connected with the functional surfaces.

Description

The invention relates to a chair, in particular armchair chair, with a frame frame and a functional unit movably mounted thereon, which has a first functional surface and a second functional surface, which are arranged at a fixed angle to each other, wherein the functional unit relative to the frame frame in a first Functional position can be brought, in which the first functional surface serves as a seat and the second functional surface as a backrest, and wherein the functional unit relative to the frame frame in a second functional position can be brought, in which the first functional surface serves as a backrest and the second functional surface as a seat, wherein the first functional surface in the first functional position relative to the second functional surface in the second functional position with respect to the frame frame has a height offset, and wherein the movable bearing between the frame frame and the functional unit via at least one joint module unit, wherein the joint module unit is formed in the manner of a four-bar linkage with two bearing supports and two pivot supports, which are operatively connected to each other by four joint bearing points, wherein the first bearing support is associated with the frame frame, and wherein the first and second pivot support the first and second bearing support connect with each other.

Such from a chair in a chair or vice versa convertible seating is from the DE 10 2009 012 086 A1 known. In this case, a seat backrest unit is provided, which is pivotable relative to a base frame in such a way that the original seat is by pivoting to the backrest surface and vice versa the original backrest surface to the seat, thereby taking the seat height of a conventional chair-seat height in a conventional chair-seat height changed. To ensure the sequence of movements, a joint module unit is provided in the manner of a four-bar linkage, which has two pivoting supports and two bearing supports. This modular design ensures that during the manufacture of the piece of furniture, the joint module unit can be handled with respect to the frame frame as an already prefabricated and contiguous module. In this respect, only the already coherent joint module unit is to be received by the assembly person and fastened to the frame frame or to the seat backrest unit for assembly.

A disadvantage of such a prior art seating is that the joint module unit has to buy the advantage of ease of handling by the pre-assembled and modularized four elements by the disadvantage of correspondingly handling many items during the production of the joint module unit. In addition, the joint module unit thereby achieves a comparatively high weight and requires a correspondingly high use of material.

From the GB 896328 is a chair known, which can also represent the above-described two alternative seating configurations, which also takes place by an arrangement of levers in the manner of a four-bar linkage. In this case, two pivoting levers are used, on one side connected to the frame frame and on the other side in each case with the seat backrest unit. This results in a very low material usage and low weight for the joint module unit, since basically two of the four joint elements are formed by already existing elements, namely the frame frame and the seat back unit.

A disadvantage of such prior art seating is that the joint module unit can not be delivered as a preassembled unit for the manufacture of the chair, but the installer must install the pivot supports individually and individually. This results in addition to the increased need for handling by the higher number of components to be handled also an increased risk of confusion of items or a correspondingly higher design effort to reduce this risk of confusion.

From the DE 20112297 U1 is a convertible from a chair into a chair or vice versa chairs known in which a seat-back unit is provided which is pivotable relative to a frame such that the original seat is by pivoting to the backrest surface and vice versa the original backrest surface to the seat, wherein while changing the seat height from a standard chair seat height to a standard chair seat height. In this case, the operating direction of the seat is changed, so that an operator in the chair configuration and in the chair configuration can each take from opposite sides of the chair in this place.

From the DE 3308340 C2 is a chair known, the seat and backrest is adjustable in height by a unit of seat and backrest is pivoted in each case via pivoting auxiliary handlebars. The movement of the seat bottom and the backrest is substantially rectilinearly oriented in the direction of height adjustment direction from the bottom of the seat configuration to the top seat configuration except for a small lateral movement component. Both in the first and in the second seat configuration, the assignment of seat and back surface is unchanged.

From the DE 1909736 U1 is a chair known whose height adjustment is similar to the aforementioned prior art, wherein in the region of the backrest, a longitudinal guide is provided by a linear guide of the backrest in the direction of height adjustment direction, wherein the seat at its front end also via pivoting handlebars is stored.

From the DE 1651775 U1 a seat is known in which the height adjustment of the seat is achieved in that the seat surface unit is rotatably mounted about a relative to the frame frame spatially fixed axis of rotation, which is approximately centrally disposed relative to the seat depth and based on the seat thickness has a certain offset, so that at a 180 ° rotation of the seat surface unit, a height offset of the seat can be achieved.

From the DE 1023870 B is a chair known in which the height adjustment of the entire seat unit via a arranged in the seat cushion area.

From the DD 35792 A1 an adjustable chair chair is known in which at a relation to the frame fixed and non-adjustable backrest, the seat is height adjustable via a lever mechanism, wherein the opposite of the backrest in the lower seating position relative to the upper seating position remaining gap is closed by an auxiliary poster.

It is an object of the present invention to avoid the aforementioned disadvantages of the prior art and to further develop a seating so that in particular the number of parts to be mounted during the manufacture of the joint module unit and the material requirement of the joint module unit is reduced, the comparatively comfortable handling of the joint module unit to remain as a coherent module during the manufacture of the piece of furniture.

This object is achieved by the features of claim 1. Characterized in that the second bearing support is formed by a portion of the functional unit, wherein the fourth hinge bearing point of the first pivot support is operatively connected to the first functional surface, and wherein the third hinge bearing point of the second pivot support is operatively connected to the second functional surface, there is the possibility, on the one hand the The number of parts and the use of material during the manufacture of the joint module unit to keep low, on the other hand, the property to continue to hold ready to be handled portion of the joint module unit as a coherent module during the manufacture of the piece of furniture. The initially prefabricated portion of the joint module unit therefore consists of two pivot supports and a bearing support connecting them. As a result, the contiguous modular design as a preassembled unit is still possible, on the other hand, the second bearing support is completely saved both as a separate component and on the entire piece of furniture related weight component, since this portion is formed by a portion of the functional unit.

In a further development of the invention, it is provided that the distance between the fourth joint bearing point and the third joint bearing point in relation to the distance between the fourth joint bearing point and the first joint bearing point is in the range between 0.8 and 1.2. This results in particularly favorable leverage, so that a uniform load of the individual elements is effected.

Furthermore, it is provided that the distance between the fourth joint bearing point and the third joint bearing position in relation to the distance between the third joint bearing point and the second joint bearing point in the range between 0.8 and 1.2. This also results in particularly favorable leverage ratios, so that a uniform load of the individual elements is effected.

The fact that the distance between the first joint bearing point and the second joint bearing point in relation to the distance between the first joint bearing point and the fourth joint bearing point in the range between 0.8 and 1.2, also result in particularly favorable leverage ratios, so that a uniform load of individual elements is effected.

In a further development of the invention, it is provided that the distance between the first joint bearing point and the second joint bearing point is in the range between 0.8 and 1.2 in relation to the distance between the second joint bearing point and the third joint bearing point. This also results in particularly favorable leverage ratios, so that a uniform load of the individual elements is effected.

It is further provided that the distance between the fourth hinge bearing point and the third hinge bearing point in relation to the distance between the first hinge bearing point and the second hinge bearing point is in the range between 0.8 and 1.2. Likewise, this results in particularly favorable leverage, so that a uniform load of the individual elements is effected.

Characterized in that the first and the second functional surface of the functional unit are arranged at a fixed angle to each other, wherein the fixed Angle in the range of 90 ° to 120 °, preferably about 100 °, resulting in a sitting person perceived as particularly comfortable sitting position.

In a further development of the invention, it is provided that the movement-effective length ratios of the two bearing supports and the two pivot supports are each matched to one another such that the first functional surface in the first functional position and the second functional surface in the second functional position are arranged to extend substantially horizontally. As a result, the seat comfort is also ensured for the respective seat configurations.

Furthermore, it is provided that at least one of the pivot supports has a substantially convex curvature area with respect to a central axis located between them. This ensures that in the respective end positions, the two pivot supports have the greatest possible distance to the surface of the padding, so that a risk by contact of the person with one of the pivotal supports can be reduced as possible even when elastically deforming the padding when acted upon by a seated person ,

The fact that the convex curvature region has a degree of expression of about one seventh to one eleventh, preferably about one ninth of the length of the pivotal support is a particularly good compromise between the safety of the seated person on the one hand with respect to the contact with the pivotal supports and on the other hand destabilization by a too much curvature, which in turn would mean an increased use of materials for stability compensation.

Reference to the accompanying drawings, the invention is explained in more detail below. Showing:

1 A three-dimensional view of a chair according to the invention in a chair configuration;

2 a side view of the chair after 1 in a chair configuration;

3 a side view of the chair after 2 in an intermediate position between the chair and chair configuration;

4 a side view of the chair after 2 in an intermediate position between the chair and chair configuration;

5 a side view of the chair after 2 in an intermediate position between the chair and chair configuration;

6 a side view of the chair after 2 in an intermediate position between the chair and chair configuration;

7 a side view of the chair after 2 in an intermediate position between the chair and chair configuration;

8th a side view of the chair after 2 in an intermediate position between the chair and chair configuration;

9 a side view of the chair after 2 in a chair configuration;

10 a spatial view of a chair with several juxtaposed seating.

1 shows a chair 10 with a frame 12 as well as a functional unit 14 facing the rack 12 via laterally arranged joint module units 16 . 18 is stored. The functional unit 14 is opposite the frame 12 be brought into a first functional position for a chair configuration and a second functional position for a chair configuration. 1 shows the seating in the first functional position, so the chair configuration. The seating 10 has a first functional area 20 , which serves as a seat in the first functional position, and a second functional surface 22 , which serves as the backrest surface in the first functional position. Both functional surfaces 20 . 22 stand each other at a fixed angle of about 90 ° to 100 °, which remains unchanged even during the transition from the first to the second functional position.

2 shows the seating according to 1 in a side view. The joint module unit 16 is designed in the manner of a four-bar linkage and has first and second bearing supports 24 . 26 and first and second pivot supports 28 . 30 passing through first to fourth joint bearings 32 . 34 . 36 . 38 are operatively connected to each other. The first bearing support 24 is doing with the in 2 not fully illustrated frame frame 12 connected and thus forms a stationary against this bearing point. The second bearing support 26 is an integral part of the functional unit 14 so that a movement of the bearing support 26 opposite the frame 12 inevitably to a relative movement of the functional unit 14 also opposite the frame 12 leads. The first and second pivot supports 28 . 30 connect the bearing supports 24 . 26 with each other and together form the said Four joint unit. The first and second pivot supports 28 . 30 associated connecting lines of the joint bearings 32 . 34 . 36 38 run in the in 2 illustrated first functional position at an angle to each other, which, as the other figures show, is variable during the movement from the first to the second functional position.

As in 9 recognizable, have the pivot supports 28 . 30 each a convex curvature area 40 . 42 on, like the movement in the 2 to 8th ensures that there is no contact of the pivotal supports 28 . 30 with each other. In addition, due to the curvature of the pivot supports 28 . 30 ensures that in the respective end positions, the pivot supports have the greatest possible distance to the pad surface, not shown, so that a person sitting on the padding, despite the elastic deformation of the padding not with the pivotal supports 28 . 30 can come into contact.

The 2 to 9 represent the movement that takes place when the chair is moved from the first functional position in the form of a chair to the second functional position in the form of a chair. Due to the fixed assignment of the first bearing support 24 to the frame 12 results from manual lifting of the first functional surface 20 by an operator due to the sizing of the articulating module unit 16 a forced operation of the functional unit 14 in the in the 2 to 9 illustrated sequence. At the same time the functional unit completes 14 both a pivoting movement of about 90 ° about a spatially variable virtual pivot axis and a lateral offset, which ultimately allows a particularly compact design of the frame and thus the entire chair.

The end positions, in which, on the one hand, the first functional position and, on the other hand, the second functional position are achieved, are each defined by fixed end stops on which the pivot supports are supported in the end positions. As in 2 is shown, the first pivot support 28 in her in the illustrated position lower end by the first end stop 44 held in a fixed position against further pivoting in this position. Corresponding to this end stop acts the second end stop 46 with the second pivot support 30 together and ensures safety against further pivoting of the swivel support 30 , As in 9 shown, results in the other functional position, a similar picture. Here, too, comes the first pivot support 28 at the first end stop 44 to the stop, while the second pivot support 30 on the end stop 46 rests. The end stops 44 . 46 are executed in the present embodiment in the manner of crossbeams that stabilize the piece of seating furniture transversely under the seat.

In the in 9 On the one hand, the orientation of the seat surface in the opposite direction is shown, on the other hand is due to the dimensioning of the joint module unit, a new elevated height level of the second functional surface as a seat created.

In 10 an illustration of several series-connected seating is shown, so that on the one hand results in the character of a multi-seat sofa, on the other hand, but also the ability to operate the individual functional units separately.

LIST OF REFERENCE NUMBERS

10

seating

12

rack

14

functional unit

16

First joint module unit

18

Second joint module unit

20

First functional area

22

Second functional area

24

First bearing support

26

Second bearing support

28

First swivel support

30

Second pivot support

32

First pivot bearing

34

Second Joint Warehouse

36

Third joint bearing

38

Fourth pivot bearing

40

First convex camber area

42

Second convex curvature area

44

First end stop

46

Second stop

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102009012086 A1 [0002]
• GB 896328 [0004]
• DE 20112297 U1 [0006]
• DE 3308340 C2 [0007]
• DE 1909736 U1 [0008]
• DE 1651775 U1 [0009]
• DE 1023870 B [0010]
• DD 35792 A1 [0011]

Claims (10)

Seating furniture, in particular armchair chair, with a frame ( 12 ) and a functional unit movably mounted thereon ( 14 ), which is a first functional area ( 20 ) and a second functional area ( 22 ), which are arranged at a fixed angle to each other, wherein the functional unit ( 14 ) opposite the frame ( 12 ) can be brought into a first functional position, in which the first functional area ( 20 ) as a seat and the second functional surface ( 22 ) serves as a backrest, and wherein the functional unit ( 14 ) opposite the frame ( 12 ) can be brought into a second functional position, in which the first functional area ( 20 ) as the backrest and the second functional surface ( 22 ) serves as a seat, wherein the first functional surface ( 20 ) in the first functional position relative to the second functional surface ( 22 ) in the second functional position with respect to the frame frame ( 12 ) has a height offset, and wherein the movable storage between the frame frame ( 12 ) and the functional unit ( 14 ) via at least one joint module unit ( 16 . 18 ), wherein the joint module unit ( 16 . 18 ) in the manner of a four-bar linkage with two bearing supports ( 24 . 26 ) and two pivot supports ( 28 . 30 ) formed by four pivot bearing points ( 32 . 34 . 36 . 38 ) are operatively connected to each other, wherein the first bearing support ( 24 ) the frame ( 12 ), and wherein the first and second pivot supports ( 28 . 30 ) the first and second bearing support ( 24 . 26 ), characterized in that the second bearing support ( 26 ) by a subarea of the functional unit ( 14 ), the fourth pivot bearing ( 38 ) of the first pivot support ( 28 ) with the first functional area ( 20 ), and wherein the third pivot bearing ( 36 ) of the second pivot support ( 30 ) with the second functional area ( 22 ) is operatively connected. Seating furniture according to claim 1, characterized in that the distance between the fourth hinge bearing point ( 38 ) and the third joint deposit ( 36 ) in relation to the distance between the fourth pivot bearing ( 38 ) and the first pivot bearing ( 32 ) is in the range between 0.8 and 1.2. Seating furniture according to claim 1 or 2, characterized in that the distance between the fourth hinge bearing point ( 38 ) and the third joint deposit ( 36 ) in relation to the distance between the third pivot bearing ( 36 ) and the second joint depository ( 34 ) is in the range between 0.8 and 1.2. Seating furniture according to one of the preceding claims, characterized in that the distance between the first hinge bearing point ( 32 ) and the second joint depository ( 34 ) in relation to the distance between the first pivot bearing ( 32 ) and the fourth joint deposit ( 38 ) is in the range between 0.8 and 1.2. Seating furniture according to one of the preceding claims, characterized in that the distance between the first hinge bearing point ( 32 ) and the second joint depository ( 34 ) in relation to the distance between the second pivot bearing ( 34 ) and the third joint deposit ( 36 ) is in the range between 0.8 and 1.2. Seating furniture according to one of the preceding claims, characterized in that the distance between the fourth hinge bearing point ( 38 ) and the third joint deposit ( 36 ) in relation to the distance between the first pivot bearing ( 32 ) and the second joint depository ( 34 ) is in the range between 0.8 and 1.2. Seating furniture according to one of the preceding claims, characterized in that the first and the second functional surface ( 20 . 22 ) of the functional unit ( 14 ) are arranged at a fixed angle to each other, wherein the fixed angle in the range of 90 ° to 120 °, preferably about 100 °. Seating furniture according to one of the preceding claims, characterized in that the movement-effective length ratios of the two bearing supports ( 24 . 26 ) and the two pivot supports ( 28 . 30 ) are each matched to one another such that the first functional area ( 20 ) in the first functional position and the second functional surface ( 22 ) are arranged in the second functional position substantially horizontally. Seating furniture according to one of the preceding claims, characterized in that at least one of the pivot supports ( 28 . 30 ) with respect to a central axis located between them in each case a substantially convex curvature area ( 40 . 42 ) having. Seating furniture according to one of the preceding claims, characterized in that the convex curvature area ( 40 . 42 ) a degree of expression of about one seventh to one eleventh, preferably about one ninth of the length of the pivot support ( 28 . 30 ) having.

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