EP0303720A1 - Seat, in particular a work seat such as an office chair or vehicle seat - Google Patents

Seat, in particular a work seat such as an office chair or vehicle seat Download PDF

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Publication number
EP0303720A1
EP0303720A1 EP87111789A EP87111789A EP0303720A1 EP 0303720 A1 EP0303720 A1 EP 0303720A1 EP 87111789 A EP87111789 A EP 87111789A EP 87111789 A EP87111789 A EP 87111789A EP 0303720 A1 EP0303720 A1 EP 0303720A1
Authority
EP
European Patent Office
Prior art keywords
seat
support
backrest
pivot axis
rails
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87111789A
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German (de)
French (fr)
Other versions
EP0303720B1 (en
Inventor
Hermann Meiller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grammer AG
Original Assignee
Grammer Sitzsysteme GmbH
Grammer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8197204&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0303720(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Grammer Sitzsysteme GmbH, Grammer AG filed Critical Grammer Sitzsysteme GmbH
Priority to DE8787111789T priority Critical patent/DE3769316D1/en
Priority to AT87111789T priority patent/ATE62389T1/en
Priority to ES87111789T priority patent/ES2021653B3/en
Priority to EP87111789A priority patent/EP0303720B1/en
Priority to US07/224,750 priority patent/US4842333A/en
Priority to CA000574060A priority patent/CA1286589C/en
Priority to AU20491/88A priority patent/AU597846B2/en
Priority to ZA885880A priority patent/ZA885880B/en
Priority to JP63201795A priority patent/JPH0197411A/en
Publication of EP0303720A1 publication Critical patent/EP0303720A1/en
Publication of EP0303720B1 publication Critical patent/EP0303720B1/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D33/00—Seats

Definitions

  • the invention relates to a seat, in particular a work seat, for example an office chair or driver's seat, with a seat support and a backrest support which is L-shaped in the side view, one leg of the backrest support engaging under the seat support and on the underside thereof with the latter Swivel axis is pivotally connected.
  • a work seat for example an office chair or driver's seat
  • a backrest support which is L-shaped in the side view, one leg of the backrest support engaging under the seat support and on the underside thereof with the latter Swivel axis is pivotally connected.
  • Such a seat is known, for example, from European Patent 0 022 933.
  • the inclination of the backrest is adjusted with the aid of a gas spring, which is effective between the leg reaching under the seat support and the seat foot.
  • the gas spring must be opened using an operating lever.
  • Travel seats for rail vehicles are also known in which the backrest support can be pivoted relative to the seat support about a pivot axis located at the rear end of the seat support in the manner of a folding knife.
  • the backrest support is therefore not L-shaped in the side view, but rather consists only of one leg compared to the L-shaped backrest support.
  • the seat support and the backrest support are guided in rails such that when the seat support moves forward, the backrest support folds in the direction of the horizontal extent until the seat becomes a lounger.
  • the upper end of the backrest support moves vertically downward, so that at the end of the folding movement the seat support is moved forward by the length of the backrest support.
  • Such a travel seat is known from German Patent 20 54 817.
  • Such a travel seat is fundamentally not suitable as a work seat, for example as an office chair, because the forward movement of the seat carrier required to achieve a certain backrest inclination is too great.
  • the inclination of the backrest or the back of the seat user is achieved only in that the seat user slides forward with the seat support by a correspondingly large amount. Applied to an office chair, this would result in the seat user moving the office chair backwards by a correspondingly large amount must move if he does not want to change the distance to a worktop.
  • the office chair would have to be supported on the floor over a very large area so that it can take into account the large horizontal movement of the center of gravity when the backrest is tilted.
  • the invention is based on the object of creating a seat which is also suitable as a work seat, in which the inclination of the backrest can be adjusted simply by changing the position of the seat user without manual actuation, and in which the backrest is nevertheless at any inclination, apart from possible upholstery , the seat user offers a rigid back support.
  • a work seat is created, the backrest inclination of which automatically adjusts when the seat user moves a little forward or backward with the seat support, with the additional advantage of this comfortable adjustment possibility while at the same time rigidly supporting the back of the seat user that the pivot point about which the seat user rotates when adjusting the backrest inclination can be held largely stationary at chest or stomach height at a short distance from the seat user.
  • the pivot axis between the seat support and the backrest support is so far apart from the rear end of the seat support that the pivot point between the upright leg of the backrest support forming the actual backrest and the seat support comes to lie in an area in which the pivot point of the back of the seat user is at one Change of Inclination of the back.
  • the disadvantage is avoided that a shirt is removed from a seat user when he tilts the backrest part backwards and remains seated and leans with his back against the backrest.
  • the inclination of the pair of rails is preferably adjustable.
  • the path which the backrest support, in particular its uppermost end, travels during an inclination adjustment can of course be changed.
  • the arrangement can be made such that in one adjustment of the pair of rails when the backrest is tilted, the uppermost end of the backrest extends backwards while the seat support moves forward (division of the tilt change into two opposite directions of movement), whereas in another setting of the pair of rails does not move the top end of the backrest support backwards when the incline of the backrest support is adjusted, but rather moves downwards along a vertical line, as is already known, for example, from German Patent 20 54 817.
  • a seat By a simple measure, namely adjusting the inclination of the pair of rails, a seat can thus be created which can be used, for example, as a so-called row seat in passenger transport means such as the train, where the rows of seats are arranged one after the other and it is desirable that the pivot point about which the seat user rotates during an inclination adjustment practically does not change, but which, on the other hand, can also be used as a so-called compartment seat in passenger transport means such as the train, which is arranged on a wall of the compartment and the latter Then backrest can no longer swing out, as is also described in the aforementioned German patent 20 54 817.
  • the leg which extends under the seat support is expediently guided in a further pair of rails at the point remote from the pivot axis.
  • the seat support is also guided at a point remote from the common pivot axis of the seat support and backrest support.
  • This guide preferably consists of a stationary support, which in a special embodiment is a rotatable roller on which the seat support rests with its end remote from the common pivot axis of the seat support and backrest support.
  • Guide pins or, even better, guide rollers preferably engage in the two pairs of rails which guide the backrest support.
  • FIG. 1 the construction principle of a seat according to the invention is shown schematically.
  • An L-shaped backrest support 10 engages with its lower leg 10a under a seat support 12.
  • a pivot axis 14 is provided below the seat support, about which the seat support 12 and the backrest support 10 can be pivoted relative to one another.
  • the ends of the pivot axis 14 are, as shown schematically, in a stationary pair of rails 16 which runs downward in the horizontal viewing direction of the seat user.
  • the solid lines represent the position of the backrest support and seat support in the upright position of the seat according to the invention, while the rest position of the seat according to the invention is shown in broken lines, i.e. the position with the greatest backrest angle. From this schematic drawing it is clear that to adjust the inclination of the backrest, the seat support 12 must be moved forward, which a person sitting on it can easily do, whereupon the backrest support 10 inevitably tends to swing backward as shown. The uppermost end of the backrest support 10 thus moves in the opposite direction compared to the foremost end of the seat support 12.
  • the inclination movement of the backrest of the seat according to the invention is thus divided into two oppositely directed movements of the seat support and backrest support, which among other things allows a space-saving arrangement of such seats as row seats in means of passenger transportation such as airplanes and trains.
  • the center of gravity hardly moves when the backrest inclination is divided by dividing the inclination movement into two oppositely directed movements, so that such a seat, if it is to be used, for example, as an office chair, does not have any overhanging cantilevers to support it Feet needed.
  • FIGS. 2a and 2b Another advantage which is achieved by dividing the inclination movement of the backrest into two opposite directions of movement can be seen from a comparison of FIGS. 2a and 2b.
  • Fig. 2a the adjustment of the backrest inclination is shown in a conventional seat, in which the inclination movement of the backrest is not divided into two oppositely directed movements of the seat support and backrest support.
  • FIG. 2a this has the consequence that the seat user moves away from a worktop when the backrest inclination is adjusted.
  • the fulcrum around which his torso moves thus moves with the backward movement of the backrest.
  • the situation in the seat according to the invention which is shown in FIG. 2b, is fundamentally different.
  • the backward movement of the backrest is, so to speak, compensated for by the forward movement of the seat support, so that the pivot point of the upper body of the seat user hardly moves when the backrest angle is adjusted and this remains at stomach level near his worktop.
  • the location of the pivot point D and its path, which it describes when the backrest is adjusted, is, as the person skilled in the art recognizes, the course of the pairs of rails 16 and 20 in which the backrest support 10 is guided at two spaced apart locations (14 and 18) is set.
  • the pivot point D is placed through a corresponding course of the pairs of rails 16 and 20 such that it lies close to the driver's arm joints when the driver is in normal posture, so that the driver makes an adjustment the seat angle does not have to tighten or stretch the arms, so it largely maintains the position to the steering wheel. So far, the driver's seat had to be adjusted lengthways to achieve this goal.
  • the distance x of the pivot axis 14 shown in FIG. 1 from the rear end of the seat support has the result that the pivot point between the upright leg of the backrest support 10 and the seat support 12 comes to lie in an area in which the pivot point of the back of the seat user a change in the inclination of the back.
  • the disadvantage is avoided that a shirt is removed from a seat user when he tilts the backrest part backwards and remains seated and leans with his back against the backrest.
  • pairs of rails 16 and 20 which are formed separately from one another in FIG. 1 can also be in the form of a single continuous pair of rails, as can be readily seen without giving up the advantages mentioned above.
  • the seat according to the invention can be designed as an office chair, as a driver's seat or for any other type of seat.
  • the possibilities of variation are also very large for the person skilled in the art.
  • the only thing of decisive importance in any seat construction according to the invention is that the ends of the pivot axis of the backrest support and seat support are guided in a pair of rails in order to adjust the inclination of the backrest and the legs reaching under the seat support are guided at a point remote from the pivot axis in such a way that during forward movement the free end of the other leg moves in the opposite direction and downwards.
  • a railway seat constructed according to the invention which can be used both as a so-called row seat with several rows of seats arranged one behind the other and as a so-called compartment seat, which is placed as close as possible to a wall of a train compartment.
  • the railway seat shown has a base frame 24 to be fastened to the floor (see FIG. 3), to which the two pairs of rails 16 and 20 (see FIG. 1) are fastened.
  • the special feature here is that the pair of rails 16 can be pivoted about an axis 26 provided at its upper end, the lower end being guided in guide slots 30 by means of pins 28.
  • the pair of rails 16 can be locked in the end positions which are reached at the two ends of the guide slots 30.
  • the backrest support 10 can be inserted with the ends of its pivot axis 14 into the pair of rails 16, wherein at the same time the guide pins 18 of the lower leg 10a of the backrest support 10 engage in the pair of rails 20.
  • the seat behaves as required by the invention, i.e. its backrest swings out to the rear when its seat is moved forward, as shown in FIGS. 4 and 5.
  • the pair of rails 16 can be used as a so-called row seat.
  • the pivot axis 14 is moved forward so far when the seat is moved forward that the backrest support in its upper region can no longer move backwards, but rather sinks along a vertical approximately downwards. This course of movement can be seen in FIGS. 6 and 7. With this setting of the pivot axis 16, the seat can then be used as a so-called compartment seat.
  • the seat according to the invention can be used as a so-called row seat or as a so-called compartment seat by a simple technical measure.

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Seats For Vehicles (AREA)
  • Chairs Characterized By Structure (AREA)

Abstract

Bei einem Sitz, bei dem der eine Schenkel (10a) eines Rückenlehnenträgers (10) unter einen Sitzträger (12) greift, sind zur Verstellung der Rückenlehnenneigung die Schwenkachse (14) in einem Schienenpaar (16) und der Schenkel (10a) an einer anderen Stelle (18) derart geführt, daß bei einer Vorwärtsbewegung des Sitzträgers das obere Ende des Rückenlehnenträgers sich in entgegengesetzter Richtung und nach unten bewegt.In a seat in which one leg (10a) of a backrest support (10) engages under a seat support (12), the pivot axis (14) in one pair of rails (16) and the leg (10a) on another are used to adjust the backrest inclination Position (18) guided such that when the seat support moves forward, the upper end of the backrest support moves in the opposite direction and downwards.

Description

Die Erfindung betrifft einen Sitz, insbesondere Arbeitssitz, bspw. Bürostuhl oder Fahrersitz, mit einem Sitzträger und einem Rückenlehnenträger, der in der Seitenansicht L-förmig ausgebil­det ist, wobei der eine Schenkel des Rückenlehnenträgers unter den Sitzträger greift und auf dessen Unterseite mit diesem über eine Schwenkachse verschwenkbar verbunden ist.The invention relates to a seat, in particular a work seat, for example an office chair or driver's seat, with a seat support and a backrest support which is L-shaped in the side view, one leg of the backrest support engaging under the seat support and on the underside thereof with the latter Swivel axis is pivotally connected.

Ein derartiger Sitz ist bspw. aus dem europäischen Patent 0 022 933 bekannt. Bei diesem Sitz wird die Neigung der Rücken­lehne mit Hilfe einer Gasfeder eingestellt, die zwischen dem unter den Sitzträger greifenden Schenkel und dem Sitzfuß wirk­sam ist. Zum Verstellen der Rückenlehnenneigung muß die Gas­feder mittls eines Betätigungshebel geöffnet werden.Such a seat is known, for example, from European Patent 0 022 933. In this seat, the inclination of the backrest is adjusted with the aid of a gas spring, which is effective between the leg reaching under the seat support and the seat foot. To adjust the backrest angle, the gas spring must be opened using an operating lever.

Es sind auch Sitze bekannt, bei denen der gegenüber dem Sitz­träger verschwenkbare Rückenlehnenträger federnd abgestützt ist, so daß sich die Neigung der Rückenlehne der jeweiligen Sitzposition anpaßt. Diese Sitze haben zwar den Vorteil, daß eine Handbetätigung zur Verstellung der Rückenlehnenneigung entfällt, jedoch auch den Nachteil, daß die Rückenlehne dem Sitzbenutzer keinen starren Halt bietet. Der Sitzbenutzer hat beim Sitzen ein "schwammiges" Gefühl , weil die Rückenlehne bei entsprechender Beaufschlagung in der Neigung nachgibt und den Rücken des Sitzbenutzers nicht starr abstützt.There are also known seats in which the backrest support which is pivotable relative to the seat support is spring-supported, so that the inclination of the backrest of the respective one Adapts seating position. Although these seats have the advantage that there is no manual operation for adjusting the inclination of the backrest, they also have the disadvantage that the backrest does not provide the user with a rigid hold. The seat user has a "spongy" feeling when sitting, because the backrest gives in when the load is applied accordingly and does not rigidly support the back of the seat user.

Ferner sind Reisesitze für Schienenfahrzeuge bekannt, bei de­nen der Rückenlehnenträger gegenüber dem Sitzträger um eine am hinteren Ende des Sitzträgers befindliche Schwenkachse nach Art eines Klappmessers verschwenkbar ist. Der Rückenlehnenträ­ger ist also hier nicht in der Seitenansicht L-förmig ausge­bildet, sondern besteht vielmehr nur aus dem einen Schenkel verglichen mit dem L-förmigen Rückenlehnenträger. Der Sitz­träger und der Rückenlehnenträger sind in Schienen derart geführt, daß bei einer Vorwärtsbewegung des Sitzträgers der Rückenlehnenträger in Richtung der horizontalen Erstreckung abklappt, bis aus dem Sitz eine Liege wird. Dabei bewegt sich das obere Ende des Rückenlehnenträgers vertikal nach unten, so daß am Ende der Abklappbewegung der Sitzträger um die Länge des Rückenlehnenträgers nach vorne verschoben ist. Ein der­artiger Reisesitz ist aus dem deutschen Patent 20 54 817 be­kannt.Travel seats for rail vehicles are also known in which the backrest support can be pivoted relative to the seat support about a pivot axis located at the rear end of the seat support in the manner of a folding knife. The backrest support is therefore not L-shaped in the side view, but rather consists only of one leg compared to the L-shaped backrest support. The seat support and the backrest support are guided in rails such that when the seat support moves forward, the backrest support folds in the direction of the horizontal extent until the seat becomes a lounger. The upper end of the backrest support moves vertically downward, so that at the end of the folding movement the seat support is moved forward by the length of the backrest support. Such a travel seat is known from German Patent 20 54 817.

Ein solcher Reisesitz eignet sich grundsätzlich nicht als Ar­beitssitz, bspw. als Bürostuhl, weil die für das Erreichen einer bestimmten Rückenlehnenneigung erforderliche Vorwärts­bewegung des Sitzträgers zu groß ist. Die Neigung der Rücken­lehne bzw. des Rückens des Sitzbenutzers wird ausschließlich dadurch erzielt, daß der Sitzbenutzer mit dem Sitzträger um ein entsprechend großes Stück nach vorne rutscht. Auf einem Bürostuhl angewandt hätte dies zur Folge, daß der Sitzbenutzer den Bürostuhl um ein entsprechend großes Stück nach hinten verschieben muß, wenn er den Abstand zu einer Arbeitsplatte nicht ändern möchte. Außerdem müßte der Bürostuhl über eine sehr große Fläche am Boden abgestützt werden, damit er der großen horizontalen Wanderung des Schwerpunktes bei einer Nei­gungsverstellung der Rückenlehne Rechnung tragen kann.Such a travel seat is fundamentally not suitable as a work seat, for example as an office chair, because the forward movement of the seat carrier required to achieve a certain backrest inclination is too great. The inclination of the backrest or the back of the seat user is achieved only in that the seat user slides forward with the seat support by a correspondingly large amount. Applied to an office chair, this would result in the seat user moving the office chair backwards by a correspondingly large amount must move if he does not want to change the distance to a worktop. In addition, the office chair would have to be supported on the floor over a very large area so that it can take into account the large horizontal movement of the center of gravity when the backrest is tilted.

Der Erfindung liegt nun die Aufgabe zugrunde, einen auch als Arbeitssitz geeigneten Sitz zu schaffen, bei dem die Neigung der Rückenlehne ohne Handbetätigung allein durch eine Änderung der Position des Sitzbenutzers verstellbar ist und bei dem trotzdem die Rückenlehne in jeder Neigung, abgesehen von einer eventuellen Polsterung, dem Sitzbenutzer eine starre Abstützung des Rückens bietet.The invention is based on the object of creating a seat which is also suitable as a work seat, in which the inclination of the backrest can be adjusted simply by changing the position of the seat user without manual actuation, and in which the backrest is nevertheless at any inclination, apart from possible upholstery , the seat user offers a rigid back support.

Diese Aufgabe wird ausgehend von einem Sitz der eingangs genann­ten Art erfindungsgemäß dadurch gelöst, daß zur Verstellung der Rückenlehnenneigung die Enden der Schwenkachse in einem Schienenpaar und der unter den Sitzträger greifende Schenkel an einer von der Schwenkachse entfernten Stelle derart geführt sind, daß bei einer Vorwärtsbewegung des Sitzträgers das freie Ende des anderen Schenkels sich in entgegengesetzter Richtung und nach unten bewegt.This object is achieved on the basis of a seat of the type mentioned at the outset in that the ends of the pivot axis in a pair of rails and the leg reaching under the seat support are guided at a position remote from the pivot axis in order to adjust the backrest inclination in such a way that during a forward movement of the The free end of the other leg moves in the opposite direction and downwards.

Bei einem solchen Sitz, bei dem die Neigung des Rückenlehnen­trägers gegenüber dem Sitzträger für jede Position des Sitz­trägers zwangsläufig fest vorgegeben ist, so daß ein schwam­miges Gefühl beim Zurücklehnen vermieden wird, wird die Nei­gungsbewegung der Rückenlehne, die erforderlich ist, um dem Sitzbenutzer in die gewünschte geneigte Sitzstellung zu über­führen, zwischen Sitzträger und Rückenlehnenträger aufgeteilt. Das obere Ende des Rückenlehnenträgers bewegt sich ja entge­gengesetzt zur horizontalen Bewegungsrichtung des Sitzträgers, so daß verglichen mit dem Reisesitz aus dem deutschen Patent 20 54 817 nur eine geringe Vorwärtsbewegung des Sitzträgers zur Erzielung der gleichen Rückenlehnenneigung erforderlich ist. Daraus ergibt sich erstens, daß der Schwerpunkt kaum wandert, so daß ein solcher Sitz nur eine geringe Standfläche benötigt und damit auch leicht als Bürostuhl ausgebildet werden kann, und ergibt sich zweitens, daß der Drehpunkt, um den sich der Sitzbenutzer bei einer Verstellung der Rückenlehnenneigung dreht, praktisch ortsfest in Bauchnähe gehalten werden kann, so daß sich der Abstand des Sitzbenutzers von einer Arbeitsplatte oder einem sonstigen Arbeitsgerät praktisch nicht ändert, wenn der Sitzbenutzer die Rückenlehnenneigung ändert.In such a seat, in which the inclination of the backrest support relative to the seat support is inevitably fixed for each position of the seat support, so that a spongy feeling when leaning back is avoided, the inclination movement of the backrest, which is required to bring the seat user into the desired position to transfer an inclined seat position, divided between seat support and backrest support. The upper end of the backrest support moves opposite to the horizontal direction of movement of the seat support, so that compared to the travel seat from the German patent 20 54 817 only a slight forward movement of the seat support is required to achieve the same backrest angle. First of all, this means that the center of gravity hardly moves, so that such a seat requires only a small footprint and can therefore also be easily designed as an office chair, and secondly, it follows that the pivot point around which the seat user adjusts when the backrest angle is adjusted rotates, can be held practically stationary near the abdomen, so that the distance of the seat user from a worktop or other working device practically does not change when the seat user changes the backrest inclination.

Ferner ist die von Haus aus einfache Mechanik beim erfindungs­gemäßen Arbeitssitz hervorzuheben sowie der Umstand, daß die Führungseinrichtungen alle unterhalb des Sitzträgers liegen, wo sie nicht stören.Furthermore, the inherently simple mechanics of the work seat according to the invention should be emphasized, as well as the fact that the guide devices are all located below the seat support, where they do not interfere.

Mit der Erfindung wird also ein Arbeitssitz geschaffen, dessen Rückenlehnenneigung sich automatisch verstellt, wenn der Sitz­benutzer mit dem Sitzträger ein wenig nach vorne oder nach hin­ten rückt, wobei zusätlich zu dieser bequemen Verstellmöglich­keit bei gleichzeitig starrer Abstützung des Rückens des Sitz­benutzers noch der Vorteil besteht, daß der Drehpunkt, um den sich der Sitzbenutzer bei Verstellung der Rückenlehnenneigung dreht, weitgehend ortsfest in Brust- oder Bauchhöhe in einem kurzen Abstand vor dem Sitzbenutzer gehalten werden kann.With the invention, therefore, a work seat is created, the backrest inclination of which automatically adjusts when the seat user moves a little forward or backward with the seat support, with the additional advantage of this comfortable adjustment possibility while at the same time rigidly supporting the back of the seat user that the pivot point about which the seat user rotates when adjusting the backrest inclination can be held largely stationary at chest or stomach height at a short distance from the seat user.

Vorteilhafterweise ist die Schwenkachse zwischen Sitzträger und Rückenlehnenträger vom hinteren Ende des Sitzträgers derart weit beabstandet, daß der Drehpunkt zwischen dem die eigentliche Rük­kenlehne bildenden aufrechten Schenkel des Rückenlehnenträgers und dem Sitzträger in einem Bereich zu liegen kommt, in dem der Drehpunkt des Rückens des Sitzbenutzers bei einer Änderung der Neigung des Rückens liegt. Auf diese Weise wird der Nachteil vermieden, daß einem Sitzbenutzer das Hemd ausgezogen wird, wenn er das Rückenlehnenteil nach hinten neigt und dabei sitzen bleibt und sich mit seinem Rücken an der Rückenlehne anlehnt. Dieser Auszieheffekt, der bei Sitzen auftritt, deren Drehpunkt zwischen Sitzfläche und Rückenlehne sich genau an der Stelle befindet, wo beide zusammenstoßen, erklärt sich dadurch, daß der Drehpunkt des Rückens des Sitzbenutzers sich am Gesäß des Sitzbenutzers in einem Abstand von der Rückenlehne befindet, so daß ein Punkt am Rücken des Sitzbenutzers bei der Neigungs­verstellung einen größeren Radius um den Drehpunkt des Rückens als der gleiche Punkt des Rückenlehnenträgers um den Drehpunkt des Rückenlehnenträgers beschreibt.Advantageously, the pivot axis between the seat support and the backrest support is so far apart from the rear end of the seat support that the pivot point between the upright leg of the backrest support forming the actual backrest and the seat support comes to lie in an area in which the pivot point of the back of the seat user is at one Change of Inclination of the back. In this way, the disadvantage is avoided that a shirt is removed from a seat user when he tilts the backrest part backwards and remains seated and leans with his back against the backrest. This pull-out effect, which occurs in seats whose pivot point between the seat surface and the backrest is exactly at the point where the two meet, can be explained by the fact that the pivot point of the backrest of the seat user is at a distance from the backrest of the seat user, so that a point on the back of the seat user in the inclination adjustment describes a larger radius around the pivot point of the back than the same point of the backrest support around the pivot point of the backrest support.

Vorzugsweise ist das Schienenpaar, in dem die Enden der gemein­samen Schwenkachse von Rückenlehnenträger und Sitzträger ver­schiebbar sind, in seiner Neigung verstellbar. Dadurch kann na­turgemäß der Weg, den der Rückenlehnenträger, insbesondere sein oberstes Ende, bei einer Neigungsverstellung zurücklegt, geändert werden. Insbesondere kann die Anordnung derart getroffen werden, daß in einer Einstellung des Schienenpaares bei der Neigungsver­stellung der Rückenlehne das oberste Ende der Rückenlehne nach hinten ausgreift, während sich der Sitzträger nach vorne ver­schiebt (Aufteilung der Neigungsveränderung in zwei entgegen­gesetzte Bewegungsrichtungen), wohingegen in einer anderen Ein­stellung des Schienenpaares sich bei einer Neigungsverstellung des Rückenlehnenträgers das oberste Ende des Rückenlehnenträgers nicht nach hinten hinausbewegt, sondern vielmehr sich entlang einer Vertikalen nach unten bewegt, wie dies bspw. bereits aus dem deutschen Patent 20 54 817 bekannt ist. Durch eine einfa­che Maßnahme, nämlich Verstellung der Neigung des Schienenpaares, läßt sich also ein Sitz schaffen, der bspw. als sogenannter Reihensitz in Personentransportmitteln wie der Eisenbahn ver­wendbar ist, wo die Sitzreihen nacheinander angeordnet sind und es erwünscht ist, daß sich der Drehpunkt, um den sich der Sitzbenutzer bei einer Neigungsverstellung dreht, praktisch nicht ändert, der sich aber andererseits auch als sogenannter Abteilsitz in Personenbeförderungsmittel wie der Eisenbahn einsetzen läßt, der an einer Wand des Abteils angeordnet ist und dessen Rückenlehne dann nicht mehr hinten ausschwenken kann, wie dies auch in dem bereits genannten deutschen Patent 20 54 817 beschrieben ist.The inclination of the pair of rails, in which the ends of the common pivot axis of the backrest support and seat support can be displaced, is preferably adjustable. As a result, the path which the backrest support, in particular its uppermost end, travels during an inclination adjustment can of course be changed. In particular, the arrangement can be made such that in one adjustment of the pair of rails when the backrest is tilted, the uppermost end of the backrest extends backwards while the seat support moves forward (division of the tilt change into two opposite directions of movement), whereas in another setting of the pair of rails does not move the top end of the backrest support backwards when the incline of the backrest support is adjusted, but rather moves downwards along a vertical line, as is already known, for example, from German Patent 20 54 817. By a simple measure, namely adjusting the inclination of the pair of rails, a seat can thus be created which can be used, for example, as a so-called row seat in passenger transport means such as the train, where the rows of seats are arranged one after the other and it is desirable that the pivot point about which the seat user rotates during an inclination adjustment practically does not change, but which, on the other hand, can also be used as a so-called compartment seat in passenger transport means such as the train, which is arranged on a wall of the compartment and the latter Then backrest can no longer swing out, as is also described in the aforementioned German patent 20 54 817.

Zweckmäßigerweise ist der unter den Sitzträger greifende Schen­kel an der von der Schwenkachse entfernten Stelle in einem wie­teren Schienenpaar geführt.The leg which extends under the seat support is expediently guided in a further pair of rails at the point remote from the pivot axis.

Der Sitzträger ist an einer von der gemeinsamen Schwenkachse von Sitzträger und Rückenlehnenträger entfernten Stelle eben­falls geführt. Diese Führung besteht vorzugsweise in einem sta­tionären Auflager, das in einer besonderen Ausführungsform eine drehbare Rolle ist, auf die der Sitzträger mit seinem von der gemeinsamen Schwenkachse von Sitzträger und Rückenlehnenträger entfernten Ende aufliegt.The seat support is also guided at a point remote from the common pivot axis of the seat support and backrest support. This guide preferably consists of a stationary support, which in a special embodiment is a rotatable roller on which the seat support rests with its end remote from the common pivot axis of the seat support and backrest support.

In die beiden Schienenpaare, die den Rückenlehnenträger führen, greifen vorzugsweise Führungszapfen oder noch besser Führungs­rollen.Guide pins or, even better, guide rollers preferably engage in the two pairs of rails which guide the backrest support.

Weitere Vorteile, Einzelheiten und Merkmale der Erfindung er­geben sich aus der nachstehenden Beschreibung, die anhand der beiliegenden Zeichnung erfolgt. In der Zeichnung stellen dar:

  • Fig. 1 schematisch eine Seitenansicht des erfindungsgemäßen Sitzes in zwei Stellungen,
  • Fig. 2a die Bewegung eines Sitzbenutzers bei der Rückenleh­nenverstellung eines herkömmlichen Sitzes und
  • Fig. 2b die Bewegung eines Sitzbenutzers bei der Rückenleh­nenverstellung des erfindungsgemäßen Sitzes,
  • Fig. 3 eine perspektivische Ansicht eines Grundgestells für einen als Eisenbahnsitz verwendeten erfindungsgemäßen Sitz,
  • Fig. 4 und 5 zwei verschiedene Postionen eines als Eisenbahnsitz mit einem Grundgestell nach Fig. 3 verwendeten er­findungsgemäßen Sitzes, wenn dieser als sogenannter Reihensitz eingesetzt wird, und
  • Fig. 6 und 7 zwei verschiedene Positionen eines als Eisenbahnsitz mit einem Grundgestell nach Fig. 3 verwendeten er­findungsgemäßen Sitzes, wenn dieser als sogenannter Abteilsitz eingesetzt wird.
Further advantages, details and features of the invention emerge from the following description, which takes place with reference to the accompanying drawing. In the drawing:
  • 1 schematically shows a side view of the seat according to the invention in two positions,
  • Fig. 2a, the movement of a seat user in the backrest adjustment of a conventional seat and
  • 2b shows the movement of a seat user during the backrest adjustment of the seat according to the invention,
  • 3 is a perspective view of a base frame for a seat according to the invention used as a railway seat,
  • 4 and 5 two different positions of a seat according to the invention used as a railroad seat with a base frame according to FIG. 3 when this is used as a so-called row seat, and
  • 6 and 7 show two different positions of a seat according to the invention used as a railroad seat with a base frame according to FIG. 3 when this is used as a so-called compartment seat.

In Fig. 1 ist das Konstruktionsprinzip eines erfindungsgemäßen Sitzes schematisch dargestellt. Ein L-förmiger Rückenlehnen­träger 10 greift mit seinem unteren Schenkel 10a unter einen Sitzträger 12. Um eine Strecke x vom hinteren Ende des Sitz­trägers beabstandet ist unterhalb des Sitzträgers eine Schwenk­achse 14 vorgesehen, um die der Sitzträger 12 und der Rücken­lehnenträger 10 gegeneinander verschwenkbar sind. Die Schwenk­achse 14 ist, wie schematisch dargestellt, mit ihren Enden in einem in der horizontalen Blickrichtung des Sitzbenutzers nach unten verlaufenden stationären Schienenpaar 16 geführt. Das freie Ende des unter den Sitzträger 12 greifenden Schenkels 10a des Rückenlehnenträgers 10, das von der Schwenkachse 14 beabstandet ist, ist mittels Führungszapfen oder - rollen 18 in einem weiteren stationären Schienenpaar 20 geführt, das in der horizontalen Blickrichtung des Sitzbenutzers nach oben ver­läuft. Am Ende des Schienenpaars 20 ist ein vorzugsweise in Form einer drehbaren Rolle ausgebildetes stationäres Auflager 22 vorgesehen, auf dem der Sitzträger 12 vorne abgestützt ist.In Fig. 1 the construction principle of a seat according to the invention is shown schematically. An L-shaped backrest support 10 engages with its lower leg 10a under a seat support 12. At a distance x from the rear end of the seat support, a pivot axis 14 is provided below the seat support, about which the seat support 12 and the backrest support 10 can be pivoted relative to one another. The ends of the pivot axis 14 are, as shown schematically, in a stationary pair of rails 16 which runs downward in the horizontal viewing direction of the seat user. The free end of the leg 10a of the backrest support 10 which engages under the seat support 12 and is spaced from the pivot axis 14 is guided by means of guide pins or rollers 18 in a further stationary pair of rails 20 which runs upward in the horizontal viewing direction of the seat user. At the end of the pair of rails 20, a stationary support 22, preferably in the form of a rotatable roller, is provided, on which the seat support 12 is supported at the front.

Die ausgezogenen Linien geben die Stellung von Rückenlehnen­träger und Sitzträger in der aufrechten Position des erfindungs­gemäßen Sitzes wieder, während in gestrichelten Linien die Ruheposition des erfindungsgemäßen Sitzes gezeigt ist, d.h. die Position mit der größten Rückenlehnenneigung. Aus dieser schematischen Zeichnung wird deutlich, daß zur Verstellung der Rückenlehnenneigung der Sitzträger 12 nach vorne bewegt werden muß, was eine daraufsitzende Person leicht vornehmen kann, worauf sich dann zwangsläufig der Rückenlehnenträger 10 nach hinten ausschwenkend wie dargestellt neigt. Das oberste Ende des Rückenlehnenträgers 10 bewegt sich also verglichen mit dem vordersten Ende des Sitzträgers 12 in entgegengesetzter Richtung. Die Neigungsbewegung der Rückenlehne des erfindungs­gemäßen Sitzes wird also in zwei entgegengesetzt gerichtete Bewegungen von Sitzträger und Rückenlehnenträger aufgeteilt, was unter anderem eine platzsparende Anordnung derartiger Sitze als Reihensitze in Personenfortbewegungsmitteln wie Flugzeugen und Eisenbahnen erlaubt. Wie man außerdem ohne weiteres sieht, wandert der Schwerpunkt bei einer Verstellung der Rückenlehnen­neigung durch die Aufteilung der Neigungsbewegung in zwei ent­gegengesetzt gerichtete Bewegungen kaum, so daß ein solcher Sitz, wenn er bspw. als Bürostuhl verwendet werden soll, zur Abstützung keine weit auskragenden Ausleger am Fuße benötigt.The solid lines represent the position of the backrest support and seat support in the upright position of the seat according to the invention, while the rest position of the seat according to the invention is shown in broken lines, i.e. the position with the greatest backrest angle. From this schematic drawing it is clear that to adjust the inclination of the backrest, the seat support 12 must be moved forward, which a person sitting on it can easily do, whereupon the backrest support 10 inevitably tends to swing backward as shown. The uppermost end of the backrest support 10 thus moves in the opposite direction compared to the foremost end of the seat support 12. The inclination movement of the backrest of the seat according to the invention is thus divided into two oppositely directed movements of the seat support and backrest support, which among other things allows a space-saving arrangement of such seats as row seats in means of passenger transportation such as airplanes and trains. As can also be seen without further ado, the center of gravity hardly moves when the backrest inclination is divided by dividing the inclination movement into two oppositely directed movements, so that such a seat, if it is to be used, for example, as an office chair, does not have any overhanging cantilevers to support it Feet needed.

Ein weiterer Vorteil,der durch die Aufteilung der Neigungs­bewegung der Rückenlehne in zwei entgegengesetzte Bewegungs­richtungen erzielt wird, geht aus einem Vergleich der Figuren 2a und 2b hervor. In Fig. 2a ist die Verstellung der Rücken­lehnenneigung bei einem herkömmlichen Sitz gezeigt, bei dem die Neigungsbewegung der Rückenlehne nicht in zwei zueinander entgegengesetzt gerichtete Bewegungen von Sitzträger und Rük­kenlehnenträger aufgeteilt wird. Das hat, wie man aus Fig. 2a sieht, zur Folge, daß sich der Sitzbenutzer bei einer Ver­stellung der Rückenlehnenneigung von einer Arbeitsplatte weg­bewegt. Der Drehpunkt, um den sich sein Oberkörper bewegt, wandert also mit der nach hinten gerichteten Bewegung der Rük­kenlehne mit. Grundlegend anders liegen jedoch die Verhältnisse beim erfindungsgemäßen Sitz, die in Fig. 2b gezeigt sind. Die nach hinten gerichtete Bewegung der Rückenlehne wird sozusagen von der nach vorne gerichteten Bewegung des Sitzträgers kom­pensiert, so daß der Drehpunkt des Oberkörpers des Sitzbenutzers bei einer Verstellung der Rückenlehnenneigung kaum wandert und dieser in Bauchhöhe nahe seiner Arbeitsplatte bleibt. Der Ort des Drehpunkts D und sein Weg, den er bei einer Verstellung der Rückenlehne beschreibt, wird, wie der Fachmann erkennt, durch den Verlauf der Schienenpaare 16 und 20, in denen der Rückenlehnenträger 10 an zwei voneinander beabstandeten Stel­len (14 und 18) geführt wird, festgelegt. Soll bspw. die er­findungsgemäße Sitzkonstruktion als Fahrersitz in einem Auto verwendet werden, so wird der Drehpunkt D durch einen entspre­chenden Verlauf der Schienenpaare 16 und 20 so gelegt, daß er bei normaler Fahrerhaltung nahe den Armgelenken des Fahrers liegt, so daß der Fahrer bei einer Verstellung der Sitzneigung die Arme nich anziehen bzw. strecken muß, er also weitgehend die Position zum Lenkrad beibehält. Um dieses Ziel zu errei­chen mußte ja bislang der Fahrersitz längs verstellt werden.Another advantage which is achieved by dividing the inclination movement of the backrest into two opposite directions of movement can be seen from a comparison of FIGS. 2a and 2b. In Fig. 2a, the adjustment of the backrest inclination is shown in a conventional seat, in which the inclination movement of the backrest is not divided into two oppositely directed movements of the seat support and backrest support. As can be seen from FIG. 2a, this has the consequence that the seat user moves away from a worktop when the backrest inclination is adjusted. The fulcrum around which his torso moves thus moves with the backward movement of the backrest. However, the situation in the seat according to the invention, which is shown in FIG. 2b, is fundamentally different. The backward movement of the backrest is, so to speak, compensated for by the forward movement of the seat support, so that the pivot point of the upper body of the seat user hardly moves when the backrest angle is adjusted and this remains at stomach level near his worktop. The location of the pivot point D and its path, which it describes when the backrest is adjusted, is, as the person skilled in the art recognizes, the course of the pairs of rails 16 and 20 in which the backrest support 10 is guided at two spaced apart locations (14 and 18) is set. If, for example, the seat construction according to the invention is to be used as a driver's seat in a car, then the pivot point D is placed through a corresponding course of the pairs of rails 16 and 20 such that it lies close to the driver's arm joints when the driver is in normal posture, so that the driver makes an adjustment the seat angle does not have to tighten or stretch the arms, so it largely maintains the position to the steering wheel. So far, the driver's seat had to be adjusted lengthways to achieve this goal.

Der in Fig. 1 gezeigte Abstand x der Schwenkachse 14 vom hinte­ren Ende des Sitzträgers hat zur Folge, daß der Drehpunkt zwi­schen dem aufrechten Schenkel des Rückenlehnenträgers 10 und dem Sitzträger 12 in einem Bereich zu liegen kommt, in dem der Drehpunkt des Rückens des Sitzbenutzers bei einer Änderung der Neigung des Rückens liegt. Auf diese Weise wird der Nachteil vermieden, daß einem Sitzbenutzer das Hemd ausgezogen wird, wenn er das Rückenlehnenteil nach hinten neigt und dabei sitzen bleibt und sich mit seinem Rücken an der Rückenlehne anlehnt. Dieser Auszieheffekt, der bei Sitzen auftritt, deren Drehpunkt am hinteren Ende des Sitzträgers 12 liegt, erklärt sich da­durch, daß der Drehpunkt des Rückens des Sitzbenutzers sich am Gesäß des Sitzbenutzers in einem Abstand von der Rücken­ lehne befindet, so daß ein Punkt am Rücken des Sitzbenutzers bei einer Neigungsverstellung einen größeren Radium um den Drehpunkt des Rückens als der gleiche Punkt des Rückenlehnen­tragers um den Drehpunkt des Rückenlehnenträgers beschreibt.The distance x of the pivot axis 14 shown in FIG. 1 from the rear end of the seat support has the result that the pivot point between the upright leg of the backrest support 10 and the seat support 12 comes to lie in an area in which the pivot point of the back of the seat user a change in the inclination of the back. In this way, the disadvantage is avoided that a shirt is removed from a seat user when he tilts the backrest part backwards and remains seated and leans with his back against the backrest. This pull-out effect, which occurs in seats whose fulcrum lies at the rear end of the seat support 12, is explained by the fact that the fulcrum of the back of the seat user is on the buttocks of the seat user at a distance from the back is so that a point on the back of the seat user describes a larger radius around the pivot point of the back when the inclination adjustment than the same point of the backrest support about the pivot point of the backrest support.

Es sei nochmals hervorgehoben, daß bei dem erfindungsgemäßen Sitz eine Verstellung der Rückenlehnenneigung erreicht wird, ohne daß der Sitzbenutzer hierfür irgendwelche Handriffe vor­zunehmen hat. Vielmehr erreicht er diese Neigungsverstellung durch eine Verschiebung seines Körpers. Dabei ist festzuhalten, daß sein Rücken in jeder Neigungsposition starr abgestützt wird, wenn er seinen Körper (Sitzträger!) nicht verlagert.It should be emphasized again that in the seat according to the invention an adjustment of the backrest inclination is achieved without the user of the seat having to carry out any manipulations for this. Rather, he achieves this tilt adjustment by moving his body. It should be noted that his back is rigidly supported in any inclination position if he does not move his body (seat holder!).

Die nach Fig. 1 getrennt voneinander ausgebildeten Schienen­paare 16 und 20 können auch in Form eines einzigen durchgehen­den Schienenpaares vorliegen, wie ohne weiteres einzusehen ist, ohne die oben genannten Vorteile aufzugeben.The pairs of rails 16 and 20 which are formed separately from one another in FIG. 1 can also be in the form of a single continuous pair of rails, as can be readily seen without giving up the advantages mentioned above.

Der erfindungsgemäße Sitz kann als Bürostuhl, als Fahrersitz oder für irgendeine andere Sitzart entsprechend ausgebildet werden. Auch sind für den Fachmann die Variationsmöglichkei­ten sehr groß. Von entscheidender Bedeutung bei jeder Sitz­konstruktion nach der Erfindung ist lediglich, daß zur Verstel­lung der Rückenlehnenneigung die Enden der Schwenkachse von Rückenlehnenträger und Sitzträger in einem Schienenpaar und der unter den Sitzträger greifende Schenkel an einer von der Schwenkachse entfernten Stelle derart geführt sind, daß bei einer Vorwärtsbewegung des Sitzträgers das freie Ende des an­deren Schenkels sich in die entgegengesetzte Richtung und nach unten bewegt.The seat according to the invention can be designed as an office chair, as a driver's seat or for any other type of seat. The possibilities of variation are also very large for the person skilled in the art. The only thing of decisive importance in any seat construction according to the invention is that the ends of the pivot axis of the backrest support and seat support are guided in a pair of rails in order to adjust the inclination of the backrest and the legs reaching under the seat support are guided at a point remote from the pivot axis in such a way that during forward movement the free end of the other leg moves in the opposite direction and downwards.

In den Fig. 3 bis 7 ist ein nach der Erfindung konstruierter Eisenbahnsitz dargestellt, der sowohl als sogenannter Reihen­sitz bei mehreren hintereinander angeordenten Sitzreihen als auch als sogenannter Abteilsitz verwendet werden kann, der so nahe wie möglich an einer Wand eines Zugabteils angeordnet ist. Der dargestellte Eisenbahnsitz hat ein am Boden zu be­festigendes Grundgestell 24 (sh. Fig. 3), an dem die beiden Schienenpaare 16 und 20 (vgl. Fig. 1) befestigt sind. Dabei besteht nun die Besonderheit, daß das Schienenpaar 16 um eine an seinem oberen Ende vorgesehene Achse 26 herum verschwenkbar ist, wobei das untere Ende mittels Zapfen 28 in Führungsschlitzen 30 geführt ist. Das Schienenpaar 16 ist in den Endstellungen, die an den beiden Enden der Führungsschlitze 30 erreicht sind, arretierbar. Der Rückenlehnenträger 10 ist mit den Enden seiner Schwenkachse 14 in das Schienenpaar 16 einsetzbar, wobei gleich­zeitig die Führungszapfen 18 des unteren Schenkels 10a des Rük kenlehnenträgers 10 in das Schienenpaar 20 greifen.3 to 7, a railway seat constructed according to the invention is shown, which can be used both as a so-called row seat with several rows of seats arranged one behind the other and as a so-called compartment seat, which is placed as close as possible to a wall of a train compartment. The railway seat shown has a base frame 24 to be fastened to the floor (see FIG. 3), to which the two pairs of rails 16 and 20 (see FIG. 1) are fastened. The special feature here is that the pair of rails 16 can be pivoted about an axis 26 provided at its upper end, the lower end being guided in guide slots 30 by means of pins 28. The pair of rails 16 can be locked in the end positions which are reached at the two ends of the guide slots 30. The backrest support 10 can be inserted with the ends of its pivot axis 14 into the pair of rails 16, wherein at the same time the guide pins 18 of the lower leg 10a of the backrest support 10 engage in the pair of rails 20.

Befindet sich das Schienenpaar 16 in der unteren Endstellung, so verhält sich der Sitz so, wie es nach der Erfindung gefor­dert wird, d.h. seine Rückenlehne schwenkt nach hinten aus, wenn seine Sitzfläche nach vorne verschoben wird, wie dies in den Fig. 4 und 5 dargestellt ist. In dieser Stellung des Schie­nenpaars 16 kann der als sogenannter Reihensitz verwendet werden.If the pair of rails 16 is in the lower end position, the seat behaves as required by the invention, i.e. its backrest swings out to the rear when its seat is moved forward, as shown in FIGS. 4 and 5. In this position, the pair of rails 16 can be used as a so-called row seat.

In der oberen Endstellung des Schienenpaares 16 jedoch wird die Schwenkachse 14 bei einder Vorwärtsbewegung der Sitzfläche derart weit mit nach vorne genommen, daß der Rückenlehnenträger in seinem oberen Bereich sich gar nicht mehr nach hinten bewe­gen kann, sondern vielmehr entlang einer Vertikalen etwa nach unten absinkt. Dieser Bewegungsverlauf geht aus den Fig. 6 und 7 hervor. Der Sitz kann bei dieser Einstellung der Schwenkachse 16 dann als sogenannter Abteilsitz verwendet werden.In the upper end position of the pair of rails 16, however, the pivot axis 14 is moved forward so far when the seat is moved forward that the backrest support in its upper region can no longer move backwards, but rather sinks along a vertical approximately downwards. This course of movement can be seen in FIGS. 6 and 7. With this setting of the pivot axis 16, the seat can then be used as a so-called compartment seat.

Der erfindungsgemäße Sitz kann als durch eine einfache tech­nische Maßnahme als sogenannter Reihensitz oder als sogenann­ter Abteilsitz verwendet werden.The seat according to the invention can be used as a so-called row seat or as a so-called compartment seat by a simple technical measure.

Claims (7)

1. Sitz, insbesondere Arbeitssitz, bspw. Bürostuhl oder Fahrer­sitz, mit einem Sitzträger (12) und einem Rückenlehnenträger (10), der in der Seitenansicht L-förmig ausgebildet ist, wobei der eine Schenkel (10a) des Rückenlehnenträgers (10) unter den Sitzträger (12) greift und auf dessen Unterseite mit deisem über eine Schwenkachse (14) verschwenkbar ver­bunden ist,
dadurch gekennzeichnet,
daß zur Verstellung der Rückenlehnenneigung die Enden der Schwenkachse (14) in einem Schienenpaar (16) und der unter den Sitzträger (12) greifende Schenkel (10a) an einer von der Schwenkachse (14) entfernten Stelle (18) derart geführt sind, daß bei einer Vorwärtsbewegung des Sitzträgers (12) das freie Ende des anderen Schenkels (10b) sich in entgegen­gesetzter Richtung und nach unten bewegt.1. Seat, in particular work seat, e.g. office chair or driver's seat, with a seat support (12) and a backrest support (10), which is L-shaped in side view, one leg (10a) of the backrest support (10) under the Grips the seat support (12) and is connected on the underside of the latter to a pivotable axis (14),
characterized,
that to adjust the backrest inclination, the ends of the pivot axis (14) in a pair of rails (16) and the leg (10a) reaching under the seat support (12) are guided at a point (18) remote from the pivot axis (14) such that at a forward movement of the seat support (12) the free end of the other leg (10b) moves in the opposite direction and down. 2. Sitz nach Anspruch 1, dadurch gekennzeichnet, daß die Schwenk­achse (14) zwischen Sitzträger (12) und Rückenlehnenträger (10) vom hinteren Ende des Sitzträgers (12) derart weit (x) beabstandet ist, daß der Drehpunkt zwischen dem die eigent­liche Rückenlehne bildenden aufrechten Schenkel (10b) des Rückenlehnenträgers (10) und dem Sitzträger (12) in einem Bereich zu liegen kommt, in dem der Drehpunkt des Rückens des Sitzbenutzers bei einer Änderung der Neigung des Rückens liegt.2. Seat according to claim 1, characterized in that the pivot axis (14) between the seat support (12) and backrest support (10) from the rear end of the seat support (12) is spaced so far (x) that the pivot point between the upright leg (10b) of the backrest support (10) forming the actual backrest and the seat support (12) comes to lie in one area in which the pivot point of the back of the seat user lies with a change in the inclination of the back. 3. Sitz nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Abschnitt des Schienenpaares (16), innerhalb welchem sich die Enden der gemeinsamen Schwenkachse (14) von Rücken­lehnenträger (10) und Sitzträger (12) verschiebbar sind, in seiner Neigung verstellbar ist.3. Seat according to claim 1 or 2, characterized in that the section of the pair of rails (16), within which the ends of the common pivot axis (14) of the backrest support (10) and seat support (12) are displaceable, is adjustable in its inclination . 4. Sitz nach einem der Ansprüche 1 bis 3, dadurch gekennzeich­net, daß der unter den Sitzträger (12) greifende Schenkel (10a) an der von der Schwenkachse (14) entfernten Stelle (18) in einem zweiten Schienenpaar (20) geführt ist.4. Seat according to one of claims 1 to 3, characterized in that the leg (10a) engaging under the seat support (12) is guided at a point (18) remote from the pivot axis (14) in a second pair of rails (20). 5. Sitz nach einem der vorhergehenden Ansprüche, dadurch ge­kennzeichnet, daß der Sitzträger (12) an einer von der ge­meinsamen Schwenkachse (14) von Sitzträger (12) und Rücken­lehnenträger (10) entfernten Stelle (22) ebenfalls geführt ist.5. Seat according to one of the preceding claims, characterized in that the seat support (12) on a from the common pivot axis (14) of the seat support (12) and backrest support (10) remote point (22) is also guided. 6. Sitz nach Anspruch 5, dadurch gekennzeichnet, daß die Füh­rung in einem stationären Auflager (22), vorzugsweise einer drehbaren Rolle, besteht, auf der der Sitzträger (12) mit seinem von der gemeinsamen Schwenkachse (14) von Sitzträger (12) und Rückenlehnenträger (10) entfernten Ende aufliegt.6. Seat according to claim 5, characterized in that the guide in a stationary support (22), preferably a rotatable roller, on which the seat support (12) with its from the common pivot axis (14) of the seat support (12) and Backrest support (10) lies at the far end. 7. Sitz nach einem der vorhergehenden Ansprüche, dadurch ge­kennzeichnet, daß in die Schienenpaare (16, 20), die den Rückenlehnenträger (10) führen, Führungszapfen, vorzugs­weise Führungsrollen, greifen.7. Seat according to one of the preceding claims, characterized in that in the pairs of rails (16, 20) which guide the backrest support (10), guide pins, preferably guide rollers, engage.
EP87111789A 1987-08-14 1987-08-14 Seat, in particular a work seat such as an office chair or vehicle seat Expired - Lifetime EP0303720B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DE8787111789T DE3769316D1 (en) 1987-08-14 1987-08-14 HEADQUARTERS, IN PARTICULAR WORK HEADQUARTERS, BSPW. OFFICE CHAIR OR DRIVER'S SEAT.
AT87111789T ATE62389T1 (en) 1987-08-14 1987-08-14 SEAT, IN PARTICULAR WORK SEAT, E.G. OFFICE CHAIR OR DRIVER'S SEAT.
ES87111789T ES2021653B3 (en) 1987-08-14 1987-08-14 SEAT, ESPECIALLY WORK SEAT, OR SEAT, OFFICE CHAIR OR DRIVER'S SEAT
EP87111789A EP0303720B1 (en) 1987-08-14 1987-08-14 Seat, in particular a work seat such as an office chair or vehicle seat
US07/224,750 US4842333A (en) 1987-08-14 1988-07-27 Seat
CA000574060A CA1286589C (en) 1987-08-14 1988-08-05 Seat
AU20491/88A AU597846B2 (en) 1987-08-14 1988-08-08 Seat
ZA885880A ZA885880B (en) 1987-08-14 1988-08-10 Seat
JP63201795A JPH0197411A (en) 1987-08-14 1988-08-12 Seat and seat frame assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87111789A EP0303720B1 (en) 1987-08-14 1987-08-14 Seat, in particular a work seat such as an office chair or vehicle seat

Publications (2)

Publication Number Publication Date
EP0303720A1 true EP0303720A1 (en) 1989-02-22
EP0303720B1 EP0303720B1 (en) 1991-04-10

Family

ID=8197204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87111789A Expired - Lifetime EP0303720B1 (en) 1987-08-14 1987-08-14 Seat, in particular a work seat such as an office chair or vehicle seat

Country Status (9)

Country Link
US (1) US4842333A (en)
EP (1) EP0303720B1 (en)
JP (1) JPH0197411A (en)
AT (1) ATE62389T1 (en)
AU (1) AU597846B2 (en)
CA (1) CA1286589C (en)
DE (1) DE3769316D1 (en)
ES (1) ES2021653B3 (en)
ZA (1) ZA885880B (en)

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EP0399251A1 (en) * 1989-05-20 1990-11-28 Roeder Gmbh Chair, particularly work- or office-chair
EP0481292A1 (en) * 1990-10-05 1992-04-22 FRANZ KIEL GmbH Seat which is arranged in single or double rows in vehicles, especially in buses
US5354120A (en) * 1991-10-31 1994-10-11 Voelkle Rolf Reclining chair
AU721283B3 (en) * 1999-10-25 2000-06-29 Roger Thomas Mascull A seating means
ITLI20130004A1 (en) * 2013-02-08 2014-08-09 Airframe S R L IMPROVED STRUCTURE OF A SEAT FOR VEHICLES IMPROVED RAILWAY OF A SEAT FOR VEHICLES RAILWAY THIS INVENTION IS RELATED TO THE CONSTRUCTION OF A MECHANICAL DEVICE, PARTICULAR FOR THE LONGITUDINAL HANDLING OF
CN106974460A (en) * 2017-03-27 2017-07-25 浙江恒林椅业股份有限公司 A kind of chair
FR3095423A1 (en) * 2019-04-26 2020-10-30 Airbus Operations (S.A.S.) Poly-articulated aerial workstation

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US5975634A (en) * 1997-10-24 1999-11-02 Steelcase Development Inc. Chair including novel back construction
CA2368923C (en) 2001-01-25 2006-03-14 Jsj Seating Company Texas, L.P. Office chair
US6722735B2 (en) 2001-04-16 2004-04-20 Ditto Sales, Inc. Chair with synchronously moving seat and seat back
DE10121227C1 (en) * 2001-04-30 2002-09-05 Klaus Seeliger Backrest and seat squab adjuster for motor vehicle seat has sliding or rolling surfaces with radius locus outside seat frame
US20050017561A1 (en) * 2003-07-21 2005-01-27 Burmeister Richard F. Seat, seat recliner mechanism, and seat recliner system
US6942080B2 (en) * 2003-12-04 2005-09-13 Tsann Kuen Enterprise Co., Ltd. Electrical appliance having a wire winding device
US20050151405A1 (en) * 2003-12-15 2005-07-14 Be Aerospace, Inc. Vehicle seating with protected living space
BRPI0510989B1 (en) * 2004-05-13 2017-11-21 Humanscale Corporation CHAIR, MEMBRANE CHAIR COMPONENT, MEMBRANE CHAIR SEAT, MEMBRANE COVER, METHOD OF MOLDING MEMBRANE CHAIR COMPONENT, AND OFFICE CHAIR
US7458637B2 (en) * 2004-06-10 2008-12-02 Steelcase Inc. Back construction with flexible lumbar
US7237841B2 (en) * 2004-06-10 2007-07-03 Steelcase Development Corporation Back construction with flexible lumbar
US7380881B2 (en) * 2004-06-15 2008-06-03 Freed William L Ergonomically responsive chair
DE102005017713B4 (en) * 2005-04-15 2007-10-31 Grammer Ag Vehicle seat with deformable backrest
USD623449S1 (en) 2005-05-13 2010-09-14 Humanscale Corporation Mesh backrest for a chair
AR057387A1 (en) * 2005-06-20 2007-12-05 Humanscale Corp SEAT APPLIANCE WITH RECLINING MOVEMENT
DE102006008234B4 (en) 2006-02-22 2017-03-30 Volkswagen Ag Contour-adaptive vehicle seat
DE102006008235B4 (en) * 2006-02-22 2014-12-11 Volkswagen Ag Seat, in particular motor vehicle seat
USD661135S1 (en) 2006-06-20 2012-06-05 Humanscale Corporation Pair of armrests for a chair or the like
US20100244515A1 (en) * 2009-03-31 2010-09-30 Dragomir Ivicevic Reclining Chair
JP5396978B2 (en) * 2009-04-10 2014-01-22 トヨタ紡織株式会社 Vehicle seat
JP5514509B2 (en) 2009-10-26 2014-06-04 株式会社イトーキ Rocking chair
CN101850731B (en) * 2010-06-09 2011-12-28 戴贵柱 Integrally adjusted seat
SG183088A1 (en) 2011-02-18 2012-09-27 Daito Electric Machine Ind Chair-type massage apparatus
US9504326B1 (en) 2012-04-10 2016-11-29 Humanscale Corporation Reclining chair
US9706845B2 (en) 2012-09-20 2017-07-18 Steelcase Inc. Chair assembly
USD697726S1 (en) 2012-09-20 2014-01-21 Steelcase Inc. Chair
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering
US9138061B1 (en) 2012-12-05 2015-09-22 Joel H. Eisenberg Seating
KR101558412B1 (en) 2014-04-30 2015-10-15 한국생산기술연구원 Titing device of chair
CN203952966U (en) * 2014-06-26 2014-11-26 陈国巨 The chair that when chair back layback, cushion reach also declines simultaneously
DE102016110404A1 (en) * 2016-06-06 2017-12-07 Grammer Ag Vehicle seat with combined adjustment options
US10427793B2 (en) * 2017-11-02 2019-10-01 Rockwell Collins, Inc. Slouching divan with damped motion
CN108835989B (en) * 2018-08-02 2023-10-17 佛山职业技术学院 Sofa chair capable of lying flat
JPWO2020255195A1 (en) * 2019-06-17 2020-12-24
NL2026485B1 (en) 2020-09-16 2022-05-16 Npk Design B V Adjustable chair

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0399251A1 (en) * 1989-05-20 1990-11-28 Roeder Gmbh Chair, particularly work- or office-chair
EP0481292A1 (en) * 1990-10-05 1992-04-22 FRANZ KIEL GmbH Seat which is arranged in single or double rows in vehicles, especially in buses
US5354120A (en) * 1991-10-31 1994-10-11 Voelkle Rolf Reclining chair
LT3458B (en) 1991-10-31 1995-10-25 Rolf Voelkle Office rotatable chair with adjustable seat and back-rest
AU721283B3 (en) * 1999-10-25 2000-06-29 Roger Thomas Mascull A seating means
ITLI20130004A1 (en) * 2013-02-08 2014-08-09 Airframe S R L IMPROVED STRUCTURE OF A SEAT FOR VEHICLES IMPROVED RAILWAY OF A SEAT FOR VEHICLES RAILWAY THIS INVENTION IS RELATED TO THE CONSTRUCTION OF A MECHANICAL DEVICE, PARTICULAR FOR THE LONGITUDINAL HANDLING OF
CN106974460A (en) * 2017-03-27 2017-07-25 浙江恒林椅业股份有限公司 A kind of chair
CN106974460B (en) * 2017-03-27 2024-04-09 恒林家居股份有限公司 Chair
FR3095423A1 (en) * 2019-04-26 2020-10-30 Airbus Operations (S.A.S.) Poly-articulated aerial workstation
US11542012B2 (en) 2019-04-26 2023-01-03 Airbus Operations Sas Polyarticulated aerial workstation

Also Published As

Publication number Publication date
EP0303720B1 (en) 1991-04-10
ZA885880B (en) 1989-04-26
US4842333A (en) 1989-06-27
AU2049188A (en) 1989-02-16
AU597846B2 (en) 1990-06-07
CA1286589C (en) 1991-07-23
ES2021653B3 (en) 1991-11-16
ATE62389T1 (en) 1991-04-15
DE3769316D1 (en) 1991-05-16
JPH0197411A (en) 1989-04-14

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