DE102012212121A1 - seat device - Google Patents

Abstract

The invention relates to a desk seat device comprising a base frame (2) with a base (20) and a seat structure (3) with a seat surface (30) and a backrest (31), a swivel mechanism (4, 104, 204) being provided , by means of which the seat structure (3) is pivotably mounted on the base frame (2) about a horizontal pivot axis (I) between a working and a lying position, and wherein the pivot axis (I) is stationary above the seat surface (2) with respect to the base frame (2) 30) is arranged at least approximately in the area of a center of gravity of the seat structure (3) together with a person who uses the seat structure (3) as intended.

Description

The invention relates to a desk-seat device comprising a base frame with a base and a seat structure with a seat and a backrest.

As desk-seat devices are referred to in the context of the application seat devices in which a height of the seat, dimensions and the like is optimized for use at a desk. Such desk-seat devices are referred to in connection with the application as office work chair or short office chair. Requirements for such seating devices are, for example, in DIN EN 1335 established.

In recent years, numerous scientific studies have confirmed that the ability of a working person with a long working day can be significantly increased by a short sleep, often called daytime sleep or power napping. It is therefore known to provide so-called bedrooms in an office. Furthermore, devices are known with which a work table or an office chair can be converted into a reclining device for a short sleep. Such retooling, however, is usually associated with a great deal of effort, so that the high conversion effort precludes the goal to allow a short sleep the worker in a short break.

It is therefore an object of the invention to provide a desk-seat device, which allows use in a lying position, without requiring a high conversion effort is required.

This object is achieved by a desk-seat device comprising a base frame with a base and a seat structure with a seat and a backrest, wherein a pivot mechanism is provided, by means of which the seat structure on the base frame about a horizontal pivot axis between a working and a lying position is mounted, and wherein the pivot axis is arranged with respect to the base frame stationary above the seat at least approximately in the region of a center of gravity of the seat structure together with a designated person using the seat structure.

In the working position, the seat device can be used without restrictions at a desk. A pivoting movement is possible at least between the working and the lying position. In one embodiment, pivoting into any intermediate position is also possible. Due to the arrangement of the pivot axis in the center of gravity, no torques due to gravity act on the seat structure. The position of the seat structure is thus stable in any pivoting position of the seat structure about the pivot axis, also referred to as tilting position. This makes it possible to dispense with expensive locking mechanisms. In one embodiment, however, additional locking mechanisms for fixing the seat structure are provided in a desired tilt position.

A pivoting movement of the seat structure is possible with little effort, for example by support on an armrest of the seat device. The pivoting movement is therefore initiated and executed manually in one embodiment by a user. In another embodiment, at least one drive and / or a brake is provided to pivot the seat structure and / or to lock in a certain position. The pivoting position over the maximum positions, d. H. Beyond the working position and / or the lying position, is prevented in advantageous embodiments by attacks. Due to the arrangement of the pivot axis above the seat, overturning of the seat structure is reliably prevented even in the event of a failure of the brakes and / or without limitation. Since the center of gravity of the seat structure-possibly with a person using the seat structure as intended-remains at least approximately stationary during a pivoting movement, there is also no risk of tilting of the seat device about an erection point of the base during pivoting.

The pivoting movement about the pivot axis lying at least approximately in the center of gravity also leads to a feeling of relaxation in the case of a pivoting movement in the case of a person using the seat device.

In one embodiment, the base comprises rollers by means of which the seat device can be moved. Furthermore, an embodiment is provided that the seat structure and the base frame are connected vertically adjustable, for example by means of a gas spring device. Since there is no displacement of the pivot axis relative to the base frame in a pivoting movement between the working and the lying position, despite a height adjustability of the seat structure is spoken relative to the base frame of a fixed pivot axis. In a further embodiment, a tilt mechanism for a dynamic sitting in the working position is provided between the seat device and the base frame.

The center of gravity of the seat structure, possibly including one of the seat structure According to the intended use of the person, depending on the weight of the seat and / or back and thus their influence on the center of gravity for a large number of possible users almost the same. In order to allow adaptation to different people, balancing weights are provided in one embodiment.

In one embodiment, it is provided that the seat structure comprises a seat structure support. The seat support serves as a holding device for the seat and the backrest. In this case, in an advantageous embodiment, the seat surface and / or the backrest is adjustable relative to the pivot axis and mounted in at least two different positions fixed to the seat structure support. Due to the adjustability of the seat and / or the backrest relative to the pivot axis an adjustment of the seat device for a particular application by shifting the center of gravity in the pivot axis is possible.

In a further embodiment it is provided that the seat surface and the backrest are connected to the seat surface for a transmission of an adjustment movement of the backrest. In one embodiment, the seat and the backrest are rigidly connected. As a "rigid connection" a mechanical connection is referred to, in which the components ideally perform no relative movement to each other. In other embodiments, the seat and the backrest are elastically connected, so that over a small, definable angle range, a relative movement between the seat and the backrest is possible. As a result, for example when using the seat device in a working position, a compensation movement is possible. In a further embodiment, it is provided that at least during a pivoting of the seat structure about the pivot axis, the seat and the backrest are rigidly connected to prevent a relative movement between the seat and backrest upon pivoting about the pivot axis and thus a displacement of the center of gravity during pivoting , The rigid connection is effected in one embodiment by a suitable device automatically during the pivoting movement about the pivot axis. In other embodiments, it is provided that the parts are connected manually by a user. It is provided in one embodiment that only after a rigid connection of the parts a pivoting movement is released about the pivot axis.

In one embodiment of the desk-seat device, the swivel mechanism comprises two support elements assigned to the base frame, arranged laterally of the seat structure, and two rockers associated with the seat structure and pivotably mounted on the support elements. In connection with the application, a "mechanical connection of the rockers with parts of the seat structure, in particular with the seat structure support, as well as a one-part design of the rockers with parts of the seat structure, in particular with the seat structure support, are referred to as the" seat structure assigned ". In one embodiment, two of the base frame associated side armrests are provided, the armrests act as support elements on which the wings are pivotally articulated.

In another embodiment of the desk-seat device, the pivot mechanism comprises at least two concentrically arranged sheet guides. Depending on the desired pivoting angle, at least two concentrically arranged, closed circular guides or open sheet guides, in the following summarized under sheet guides, are provided. The sheet guides are slidably mounted on rollers or counter-guides, so that the seat structure performs a pivoting movement about the axis, which is defined by the two centers. In advantageous embodiments, it is provided that the two sheet guides are associated with the seat structure and are slidably mounted in a counter guide associated with the base frame. In one embodiment, a course of the bending line of the two sheet guides is optimized for a pivoting movement. The two sheet guides are designed for this purpose in one embodiment as circular arc guides. In another embodiment, the sheet guides on a bending line, which differs in sections from a circular path. By a suitable choice of the bending line, in one embodiment, a force is increased at the beginning of a pivoting movement from the working position and / or from the lying position. Alternatively or additionally, it is provided by a suitable choice of the bending line in another embodiment, that the seat structure is forced into the working position and / or in the lying position without external force. The course of the bending line can be suitably selected by the person skilled in the art without difficulty, the center of gravity remaining at least approximately stationary.

In yet another embodiment of the desk-seat device, the pivot mechanism comprises two hinge devices, each of which has at least one upper arm and a forearm articulated about an arm axis to the upper arm, the upper arm being hinged to the base frame about a base axis, the lower arm an end axis is rotatably hinged to the seat structure, the base axis, the arm axis and the end axis of each hinge device intersect each other in each case a central point and the connecting line of the central points defines the pivot axis. In one embodiment are more Arms which are rotatable about more arm axes that go through the central point, provided, wherein the lower arm is not directly or directly hinged to the seat structure, but the seat structure between the two last arms of the two hinge devices, is rotatably mounted about the two end axes , Such a pivot mechanism allows pivoting about a not physically realized pivot axis. The pivot mechanism is arranged offset to the pivot axis. In advantageous embodiments, the swivel mechanism is arranged to save space below the seat, without this resulting in an impairment of the use in the working position. In addition, it is possible to provide a design of the seat structure, which is not enforced by the pivoting mechanism.

In a development, the two joint devices are constructed symmetrically with respect to the plane of symmetry between the two central points. This is advantageous for ease of storage and construction during construction and maintenance, but this is not necessary. In advantageous embodiments, however, it is at least provided that the end axes extend in a common normal plane to the pivot axis and / or that the base axes lie in a common plane.

In a further embodiment of the desk-seat device, the seat structure comprises an adjustable between a use position and a stowage leg rest. The leg or footrest allows the lower legs and / or feet to be stored in a lying position. In the use position, the leg rest is in one embodiment in a plane with the seat. In another embodiment, the leg rest is angled with respect to the seat in the use position. The leg rest is coupled in one embodiment with the pivot mechanism of the seat structure, so that when pivoting the seat structure in the lying position, the leg rest is adjusted to the use position. In other embodiments, the adjustment movements of the seat structure and the leg rest are not coupled, so that, for example, the leg rest can be brought into a working position even in the working position.

In a further development, it is provided that the leg rest is articulated pivotably on the seat structure. In this case, in one embodiment, the leg rest is articulated pivotably about an axis arranged at a front end of the seat surface. In one embodiment, pivoting takes place by means of a folding mechanism with a stopper element projecting downwards from the seat surface, which holds the leg rest against the force of gravity in a lying position in a lying position of the seat structure in a use position.

In an alternative embodiment, the legrest is slidably mounted and hinged in a drawer. In one embodiment, the leg rest is loaded by means of a constraining force, which causes it to fold down when the leg rest is pulled out of the drawer.

Further advantages of the invention will become apparent from the subclaims and from the following description of embodiments of the invention, which are shown schematically in the drawings. For identical or similar components, the same reference numbers are used in the drawings. Features described or illustrated as part of one embodiment may also be used in another embodiment to obtain a further embodiment of the invention.

In the drawings show:

1 a perspective view of a desk-seat device according to a first embodiment;

2 a perspective view of a support structure of the desk-seat device according to 1 ;

3 a side view of the desk-seat device according to 1 ;

4 a perspective view of a seat structure of the desk-seat device according to 1 with two wings;

5 a perspective view of a desk-seat device according to a second embodiment;

6 a side view of the desk-seat device according to 5 ;

7 a detail Z of the side view of the desk-seat device according to 5 ;

8th a side view of a desk-chair apparatus according to a third embodiment;

9 a rear view of the desk-seat device according to 8th ;

10 a perspective view of the desk-seat device according to 8th ;

11 a detail XI according to the desk seat device 10 ;

12 a side view of a desk-seat device according to a fourth embodiment in a working position;

13 a side view of the desk-seat device according to 12 after taking off a leg rest and

14 a side view of the desk-seat device according to 12 in a lying position.

The 1 and 3 schematically show a desk-seat device 1 according to a first embodiment in a perspective view and a side view. 2 and 4 show parts of the desk seat device 1 according to the first embodiment. The 5 and 6 show a perspective view and a side view of a desk-seat device 101 according to a second embodiment. 7 shows a detail Z according to 5 ,

The 8th to 10 schematically show a desk-seat device 201 according to a third embodiment in a side view, a rear view or a perspective view. 11 shows a detail XI the desk-seat device 201 according to the 8th to 10 ,

The 12 to 13 schematically show a desk-seat device 301 according to a fourth embodiment in three side views.

The desk seat device 1 . 101 . 201 . 301 have partly the same or similar components. For these components, uniform reference numerals are used. In the following, these components will be described first.

The desk seat devices 1 . 101 . 201 each include a base frame 2 with a base 20 and a seat structure 3 with a seat 30 and a backrest 31 , At the base 20 are roles in the illustrated embodiments 21 intended.

The desk seat devices 1 . 101 . 201 each further comprise a pivoting mechanism 4 . 104 . 204 , by means of which the seat structure 3 around a horizontal pivot axis I between one in the 3 . 6 . 8th and 9 work position shown and one in 1 . 5 and 10 Lying arrangement shown is pivotally mounted. The pivot axis I is each with respect to the base frame 2 fixed above the seat 30 arranged, wherein a position of the pivot axis I is chosen so that the pivot axis I at least approximately in the area of a center of gravity of the seat structure 3 including a not shown, as intended, the seat structure 3 user is arranged.

The seat structure 3 In the illustrated embodiments, each comprises a seat structure support 32 on which the seat 30 is attached. The backrest 31 and the seat 30 are in the illustrated embodiments by means of an angle 33 rigidly connected. The seat 30 is adjustable in one embodiment of the seat structure support 32 stored. This makes it possible to focus on the seat structure 3 taking into account a person using the seat structure relative to the pivot axis I to shift, so the center of gravity in the pivot axis I to come to rest. In the illustrated embodiment, the seat surface 30 and backrest 31 rigid with the seat structure support 32 connected.

The in the 1 to 11 illustrated desk seat devices 1 . 101 . 201 each further comprise a leg rest 7 on which in the lying position according to 1 . 5 and 10 the lower legs or the feet of a user, not shown, can be stored. The leg rest 7 is - like in 3 . 6 or 8th is recognizable - in the working position in a position below the seat 30 stowed. The leg rest 7 is by means of two guide rail pairs 70 . 71 relative to the seat 30 , slidably mounted in a plane arranged at least approximately parallel to the seat surface. Each is a guide rail 70 on the seat structure support 32 appropriate. At one end of the second, relative to the first sliding guide rail 71 is the leg rest 7 pivoted pivoted. An adjustment mechanism for the legrest 7 further includes a lever 72 on which a constraining force is applied by means of an element not shown in the figures. Due to the compulsive force becomes the leg rest 7 when extending the guide rails 71 in the in 1 shown, opposite the seat 30 angled position about the pivot axis 73 pivoted.

The in the 12 to 14 illustrated desk seat devices 301 also includes a leg rest 307 on which in the lying position according to 13 the lower legs or the feet of a user, not shown, can be stored. Also the leg rest 307 is - as in 12 is recognizable - in the working position in a position below the seat 30 stowable. As in 13 is recognizable, for a use is the leg rest 307 extendible from the stowed position. The leg rest 307 is by means of a pin 371 in a on the seat structure support 32 attached guide rail 370 slidably mounted and in the extended position around the pin 371 pivotable. The leg rest 307 is still on folding mechanism 374 assigned. The folding mechanism 374 includes one of the seat 30 downwards projecting stopper element 375 , which with one at the back of the leg rest 307 arranged stop 376 interacts. By means of two levers 377 . 378 becomes the stopper element 375 when pivoting the seat structure 3 issued, so the leg rest 307 around the cone 371 pivoted.

The provided in the four embodiments pivoting mechanisms 4 . 104 . 204 are described below.

According to the first in the 1 to 4 illustrated embodiment and the fourth in the 12 to 14 illustrated embodiment includes the pivoting mechanism 4 two to the base frame 2 assigned, the side of the seat structure 3 arranged support elements 40 , which are in one piece as a U-shaped support structure 400 is trained.

The support structure 400 is in detail in 2 shown. The U-shaped support structure 400 includes a base 41 and two projecting from the base as support elements 40 acting thighs. By means of the base 41 is the support structure 400 with the base frame over screws 42 and a carrier plate 43 firmly connected. The support structure 400 is in the embodiment according to 1 to 4 opposite the base 20 by means of a known gas pressure spring device 5 height adjustable. At the support structure 400 In the embodiment, two armrests 6 by means of screws 60 attached.

The swing mechanism 4 further includes two wings 44 which in detail in 4 illustrated seat structure 3 assigned. The wings 44 are by means of two pivot bearings 45 pivotable about the pivot axis I on the support structure 400 arranged. In a modified embodiment, the support structure comprises 400 a hole wreath for a connection of the wings. This makes it possible to swing the wings 44 in different positions on the support structure 400 to arrange so a position of the pivot axis I to vary.

The illustrated support structure 400 includes two stops 46 . 47 , by means of which a maximum movement of the seat structure 3 relative to the base frame 2 is limited in the illustrated embodiment. As in 1 can be seen, acts in a radial direction closer to the pivot axis I arranged stop 47 with the swingarm 44 together to prevent pivotal movement beyond the reclining position. The arrangement of the stops 46 . 47 However, it is merely exemplary and can be selected by a person skilled in the art.

As in 4 recognizable are the wings 44 by means of a screw connection 34 on the seat structure support 32 attached. Alternatively or in addition to the modified embodiment of a support structure described above 400 with a perforated ring for a connection of the wings 44 it is conceivable, the wings in different positions on the seat structure support 32 to arrange so a position of the pivot axis I to vary.

The in the 5 to 7 illustrated pivoting mechanism 104 includes two concentrically arranged bow guides 140 , which in the illustrated embodiment, mechanically with the seat structure support 32 are connected. In the illustrated embodiment, the bow guides 140 in the area of the backrest 31 extended. The bow guides 140 thus support the backrest 31 from. At the same time, an aesthetically pleasing structure is created.

7 shows a detail Z according to 5 , As in 7 is recognizable, are the bow guides 140 each in a counterpart 141 with three rollers 142 slidably mounted. The counter-leadership 141 is the basic frame 2 assigned and by means of a bracket 143 on the base frame 2 stored. The coat hanger 143 is opposite the base 20 stored in adjustable height adjustable in advantageous embodiments. The seat device 101 further includes two armrests 6 , which also with the base frame 2 by means of side plates 61 and by means of the strap 143 are connected. The side plates 61 serve in the in 5 to 7 illustrated embodiment as a housing for the counter-guides 141 , wherein in the illustration according to 5 the armrest 6 opposite the counter-leadership 141 is shown offset, so that the counter-leadership 141 is visible.

In the 8th to 10 illustrated pivoting mechanism 204 includes two hinge devices 8th , wherein a hinge device 8th in 11 is shown in detail. The joints 8th each include an upper arm 80 and a forearm pivotally hinged to the upper arm 81 , The upper arm 80 and the forearm 81 are in this case a schematically represented arm axis 82 rotatably hinged together. The upper arm 80 is further about a schematically illustrated base axis 83 on the base frame 2 hinged. More precisely, the upper arm 80 on one of the base frame 2 associated bracket 243 appropriate. Forearm 81 is about an end axis 84 rotatable on the seat structure 3 , more precisely on the seat structure support 32 hinged. The base axis 83 , the arm axis 82 and the end axis 84 intersect each other in a schematically drawn central point 85 , A connecting line of the two central points 85 defines the pivot axis I ,

In the illustrated embodiment, the two hinge devices 8th similar and symmetrical with respect to 9 Plotted symmetry plane II between the central points 85 built up.

The two hinge devices 8th allow one around the pivot axis I pivotable mounting, the pivoting mechanism 204 spaced from the pivot axis I is arranged. This makes it possible, the components of the swing mechanism 204 below the seat 30 and complains about a range of use of the armrests 6 to arrange. This is a risk of injury due to in the field of pivoting mechanics 204 pinched body parts of the user particularly low.

In the illustrated embodiment, each hinge device comprises two arms, namely an upper arm 80 and a forearm 81 , In other embodiments, further "arms" are provided which are each rotatably articulated about a further axis, wherein all other axes through the central point 85 walk. An advantage of such arrangements is that it is possible to form the arms short and therefore to allow a good fit in tight spaces. In still other embodiments are more than two hinge devices 8th provided, wherein a central point of the additional hinge means in the pivot axis I lies.

The base axes 83 are at the temple 243 arranged and thus arranged immovably to each other. Likewise, the two end axes 84 on the common seat support 32 and thus arranged immovably to each other. An orientation of the base axis 83 , the arm axis 82 and the end axis 84 and a length of the upper arm 80 and / or the forearm 81 are freely selectable within wide limits. This makes it possible for the central points 85 targeted to place in a desired area depending, for example, a mass of the seat structure, only the lateral deflection, which takes place per angle unit, sets limits here.

In the embodiment according to the 8th to 10 has the adjustment mechanism for the legrest 7 further a blocking element 75 on. The leg rest 7 is by means of the two guide rail pairs 70 . 71 relative to the seat 30 slidably mounted, with a compulsive force on leg rest 7 is applied, which is the leg rest 7 forces into the extended use position. The blocking element 75 Holds the leg rest 7 against the compulsive force in the stowage position. By loosening the locking element 75 The leg rest is extended semiautomatically. The leg rest 7 is in the in 8th to 10 illustrated embodiment without pad designed so that a particularly space-saving stowage is possible.

In all illustrated embodiments, an adjusting movement between the working position and the lying position is done manually. A user can be supported for this purpose, for example, on the armrests and initiate a pivoting movement in the reclining position by leaning back. In other embodiments, the pivoting mechanism comprises a drive or a plurality of drives. The drives are suitably selected according to the pivoting mechanism.

In one embodiment, a timer with a wake-up function is provided, wherein after a defined period of time a user is woken up. In one embodiment, it is provided for this purpose that at the end of the period of time a constraining force is applied, by means of which a provision of the seat structure 3 from the lying position into the working position. The coercive force is applied in a development by a drive, in another embodiment by means of a spring, which is released after the expiration of the period of time.

The for the realization of the individual swing mechanisms 4 . 104 . 204 required materials such as stainless steel, aluminum and correspondingly robust plastic are in the field of manufacturing seating devices sufficiently available to the skilled person, in knowledge of the invention, it is no problem for him to select and dimension them accordingly.

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 non-patent literature

• DIN EN 1335 [0002]

Claims (14)

Desk seat device comprising a base frame ( 2 ) with a base ( 20 ) and a seat structure ( 3 ) with a seat ( 30 ) and a backrest ( 31 ), characterized in that a pivoting mechanism ( 4 . 104 . 204 ) is provided, by means of which the seat structure ( 3 ) on the base frame ( 2 ) about a horizontal pivot axis ( I ) is pivotally mounted between a working and a lying position, wherein the pivot axis ( I ) with respect to the base frame ( 2 ) fixed above the seat ( 30 ) at least approximately in the region of a center of gravity of the seat structure ( 3 ) including the seat structure (as intended) 3 ) person is arranged. Desk seat device according to claim 1, characterized in that the seat structure ( 3 ) a seat structure support ( 33 ), wherein the seat surface ( 30 ) and / or the backrest ( 31 ) relative to the pivot axis ( I ) adjustable and fixable in at least two different positions on the seat structure support ( 33 ) is stored. Desk seat device according to claim 1 or 2, characterized in that the seat surface ( 30 ) and the backrest ( 31 ) for a transmission of an adjustment movement of the backrest ( 31 ) on the seat ( 30 ) are rigidly connected. Desk seat device according to claim 1, 2 or 3, characterized in that the pivoting mechanism ( 4 ) two of the base frame ( 2 ), laterally of the seat structure ( 3 ) arranged support elements ( 40 ) and two of the seat structure ( 3 ), on the support elements ( 40 ) pivotally mounted rockers ( 44 ). Desk seat device according to claim 1, 2 or 3, characterized in that the pivoting mechanism ( 104 ) at least two concentrically arranged bow guides ( 140 ). Desk seat device according to claim 5, characterized in that the two sheet guides ( 140 ) of the seat structure ( 3 ) and in a base frame ( 2 ) associated counter-guide ( 141 ) are mounted displaceably. Desk seat device according to claim 5 or 5, characterized in that a course of the bending line of the two sheet guides ( 140 ) is optimized for a pivoting movement. Desk seat device according to claim 1, 2 or 3, characterized in that the pivoting mechanism ( 204 ) two joint devices ( 8th ), each of which has at least one upper arm ( 80 ) and one around an arm axis ( 82 ) rotatably articulated to the upper arm ( 81 ), wherein the upper arm ( 80 ) around a base axis ( 83 ) rotatable on the base frame ( 2 ), the forearm ( 81 ) around an end axis ( 84 ) is pivotally hinged to the seat structure, the base axis ( 83 ), the arm axis ( 82 ) and the end axis ( 84 ) of each joint device ( 8th ) in each case in a central point ( 85 ) and the connecting line of the two central points ( 85 ) the pivot axis ( I ) Are defined. Desk seat device according to claim 8, characterized in that the two hinge devices ( 8th ) symmetrical with respect to the plane of symmetry ( II ) between the two central points ( 85 ) are constructed. Desk seat device according to claim 8 or 9, characterized in that the end axes ( 85 ) in a common normal plane to the pivot axis ( I ). Desk seat device according to claim 7, 8 or 9, characterized in that the base axes ( 83 ) lie in a common plane. Desk seat device according to one of the preceding claims, characterized in that the seat structure ( 3 ) an adjustable between a use position and a storage position leg rest ( 7 . 307 ). Desk seat device according to claim 12, characterized in that the leg rest ( 7 . 307 ) pivotable on the seat structure ( 3 ) is articulated. Desk seat apparatus according to claim 12 or 13, characterized in that the leg rest ( 7 . 307 ) is mounted in a drawer sliding and hinged.

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