EP1066775A1 - Chaise - Google Patents

Chaise Download PDF

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Publication number
EP1066775A1
EP1066775A1 EP00113435A EP00113435A EP1066775A1 EP 1066775 A1 EP1066775 A1 EP 1066775A1 EP 00113435 A EP00113435 A EP 00113435A EP 00113435 A EP00113435 A EP 00113435A EP 1066775 A1 EP1066775 A1 EP 1066775A1
Authority
EP
European Patent Office
Prior art keywords
chair
spring
seat plate
backrest
support
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
EP00113435A
Other languages
German (de)
English (en)
Other versions
EP1066775B1 (fr
Inventor
Johannes Uhlenbrock
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.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Priority claimed from DE19931099A external-priority patent/DE19931099C2/de
Application filed by Individual filed Critical Individual
Publication of EP1066775A1 publication Critical patent/EP1066775A1/fr
Application granted granted Critical
Publication of EP1066775B1 publication Critical patent/EP1066775B1/fr
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
    • A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
    • A47C31/126—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for chairs
    • 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
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
    • A47C1/03274—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs of torsion type
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03277—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03277—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs
    • A47C1/03279—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with bar or leaf springs of torsion type
    • 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

Definitions

  • the present invention relates to a chair with a Seat plate, with a seat support carrying the seat plate, the one with a central chair column or more Is connected to the legs of the chair, and to a back support, the one under the seat plate to the rear and behind the seat plate runs upwards and carries a backrest, whereby the seat plate near its front edge by one horizontally transverse first pivot axis pivotable on the seat support and offset from it by one parallel second pivot axis pivotable on the backrest support is articulated, the backrest support by one between the first and second pivot axes parallel to these running third pivot axis pivotable on the Seat support is articulated and being under the seat plate a compression spring arrangement supported on this is that one up and on the seat plate the backrest has a forward biasing force exercises.
  • a chair of the type mentioned is from DE 43 13 301 C2 known. It is specifically provided that on the bottom the seat plate in the front and rear area Columns fixed downwards in pairs are, with the lower ends of the front supports with the lower ends of downward, pivotable handlebars attached to the seat support and the lower ends the rear supports are pivotally connected to the backrest support are and that the compression spring assembly between the Seat plate and the seat support is arranged.
  • This Construction of the chair becomes a so-called synchronous mechanism reached when loading the rear Part of the seat plate is lowered at the rear and at the same time the backrest swings backwards the pivoting angle of the backrest is usually is greater than the swivel angle of the seat plate.
  • the ratio of the swivel angle to each other is determined by the interacting lever lengths are determined.
  • the disadvantage of this known chair is considered that the preload force of the backrest only from the strength of the compression spring assembly and the design the leverage determined by the chair, so that in no way an adjustment of the preload force the backrest to different body weights different users of the chair is possible.
  • An interference the preload force of the backrest would be by using an adjustable or preloadable Compression spring arrangement possible, but must for this the user of the chair can carry out the adjustment manually, which is an undesirable amount of effort especially if a chair is different and different heavy users.
  • the object of the present invention is therefore to to create a chair of the type mentioned above, which avoids the disadvantages set out and in particular an automatic adjustment of the preload force the backrest to users of different weights of the chair is reached.
  • Characteristics of the chair is achieved that the seat plate when used by a heavier User is moved down, which inevitably leads to leads to a tension of the compression spring arrangement. That I the compression spring arrangement on the backrest extension supports, the compression spring assembly exerts on the backrest support a lever moment that leads to an enlargement the preload force of the backrest. A chair user experienced with a higher body weight increased support for his back by the Backrest as desired and ergonomically sensible is.
  • the seat plate takes a higher one Location one in which the compression spring assembly is less strong is tense; accordingly inevitably arises a lower preload of the backrest, so that a lightweight user according to his lower body weight also a reasonably lower Supportive power through the backrest on his Back experiences.
  • the synchronous adjustment remains of the seat plate and backrest in full received so that even when changing the seating position the seat plate and the backrest in a fixed Relationship to each other can be pivoted.
  • the chair of a surprisingly simple one Construction so that the manufacture of the chair is relatively simple and inexpensive.
  • the second Swivel axis near the longitudinal center of the seat plate below this runs is preferably provided.
  • the one required for stool movements Mechanics can be placed under the front half of the Seat plate are concentrated on what the manufacture of the Chair simplified and what an appealing appearance of the chair and especially its under the Seat plate arranged movement mechanism results.
  • the seat plate on the underside has at least one front and rear bearing support, through which the first, front and the second, rear Swivel axis runs. Using these bearing supports the first and the second pivot axis receive a desired one Distance from the seat plate. You can also do so different seat plates in the simplest way the bearing supports are connected so that with little Effort different designs and designs of the chair with different seat plates are possible.
  • the bearing supports each have an elongated hole through which one first, front and fixed to the seat support second, rear bearing bolt runs, the elongated holes on a radius around the respectively unrelated one other bearing bolts.
  • the elongated holes is a swiveling of the seat plate both around the front, first pivot axis and around the rear, second pivot axis possible without jamming, see above that the seat plate has different seating positions of the chair user can adjust freely.
  • the second, rear bearing pin also by an essentially vertically oriented one Elongated hole runs in the backrest support. Separate funds to limit the movement of the backrest support saved this way, which is another contribution to simplification the mechanical construction of the chair.
  • the slot mentioned serves in interaction with the second, rear bearing pin for coupling Seat plate and backrest swivel within the synchronous mechanism.
  • a version of the chair which is preferred as an office swivel chair is usable, provides that the seat support in Longitudinal direction of the seat plate running in the transverse center arranged below this and at its rear end connected to the chair column that left and right from the seat support symmetrical to this one backrest support provided with an associated compression spring arrangement is that there are two front and rear bearing supports are and that a continuous front and rear Bearing pin is attached to the seat support.
  • An alternative version of the chair that is special is suitable as a meeting or conference chair characterized in that the seat support in two parts executed and running in the longitudinal direction of the seat plate arranged on the left and right below this and one at each of its front and rear ends Chair leg is connected to the left and right inside of the two seat support parts parallel to each one Backrest support, each with an associated compression spring arrangement it is provided that two front and rear bearing supports are present and that a continuous front and rear bearing bolts on the two seat support parts is appropriate.
  • the compression spring arrangement mentioned is advantageously a Coil spring arrangement because coil springs have little installation space require and because they are a common and appropriate easily obtainable in various designs Component is.
  • the Compression spring arrangement for example, also a gas pressure spring arrangement or an elastomer spring arrangement.
  • Another alternative is the spring arrangement formed by a leg spring arrangement.
  • the chair is provided that the / each of the leg spring assembly leg spring forming a one or spanning several turns, the third pivot axis surrounding spring body and two tangent to it includes outwardly extending spring legs, wherein a first spring leg near its free end on the Underside of the seat plate and a second spring leg is supported on the backrest support and the spring legs are so biased that they are on the seat plate an upward force and on the backrest support exert a preloading force on the backrest.
  • the height of the spring arrangement only from the outer diameter of the spring body is determined because the leg spring one Has spring body, its longitudinal axis in the horizontal direction runs across the seat plate.
  • leg spring At the same time surrounds the spring body the third pivot axis, so that without additional construction measures the leg spring sufficient is securely held under the seat plate.
  • the spring characteristics the leg spring can be adjusted in wide areas as desired, taking changes in spring characteristics by variations in the spring strength and / or the number of turns and / or the winding diameter and the length the spring leg is possible.
  • both Spring legs away from the spring body approximately parallel to each other run forward, with the second spring leg supported on the top of the backrest extension and is a downward-facing extension Exerts force.
  • This alignment of the spring legs results in a particularly space-saving arrangement, so that the spring arrangement below the seat plate only one low height required. This is especially for that optical appearance of the chair in its side view advantageous.
  • At least the first spring leg in one with the Seat plate connected slide or roller guide is.
  • two leg springs are provided, which are preferably in one piece with each other by a single, correspondingly double coiled and bent spring steel wire or rod formed are. Due to the one-piece design of the two Leg springs can also make another contribution to one simple mechanical design and inexpensive manufacture be performed.
  • the compression spring arrangement is in the chair formed by a torsion bar spring arrangement.
  • the chair is provided that the / each the torsion bar assembly forming torsion bar spring with at least one in torsion, stressed in torsion extending spring section and with at least two in Longitudinal spring levers formed with a first spring lever near its free end on the underside of the seat plate and a second spring lever is supported on the backrest support and wherein the Spring levers are biased so that they are on the seat plate an upward force and on the backrest support a force that preloads the backrest forward exercise.
  • the spring section stressed on torsion also the forms the first pivot axis.
  • a separate bearing pin for This saves formation of the pivot axis, what the number of items required advantageously reduced.
  • the spring lever from the spring section as seen from below in the chair seen parallel to each other and in side view of the chair including an acute angle to the rear run with the second spring lever on the top the extension of the backrest support is supported and a downward force on the extension exercises.
  • the torsion bar spring also needs this in the horizontal direction of the chair in its longitudinal direction only relative little installation space, so that even in this regard Contribution to a compact design is delivered.
  • the torsion bar spring is preferably in one piece by a U-shaped spring steel rod formed.
  • Such Torsion bar spring is particularly simple and inexpensive producible and requires only a small amount of material, what with at a desired low total weight of the chair.
  • the invention proposes that two left and two right bearing supports are available to a left and a right column component or even combined into a single support component and are made in one piece. This measure is simplified the manufacture of the chair and increases stability the storage of the seat plate on the seat support and on Backrest support.
  • the invention further provides that the seat support and at least the part running below the seat plate of the backrest support and, if necessary, the bearing supports Stamped and pressed parts are made of sheet steel. Punching and Pressed parts made of sheet steel are particularly inexpensive in large quantities can be manufactured as mass parts, whereby they at the same time have high stability and durability. This is a high and permanent quality of the chair at low manufacturing costs and at low wear guaranteed.
  • the chair preferably has a combination of synchronous mechanism and weight-dependent backrest preload.
  • the chair may not wish so be carried out that the articulation of the seat plate on the Backrest support is omitted, causing the seat plate and the backrest support is not synchronized, i.e. independently of one another are pivotable.
  • the necessary technical Changes are advantageously limited to that Omission of individual parts.
  • the one shown in Figure 1 as the first embodiment Office swivel chair 1 has as essential parts Seat plate 2, a seat support 3, a backrest support 4 with a backrest 4 'and a central chair column 5 with a star base 50 at its lower end.
  • the seat plate 2 is a stable plate that on the top with a cushion, not shown here can be provided.
  • the underside of the seat plate 2 is two front bearing supports 21 and two rear bearing supports 22 connected.
  • the bearing supports 21, 22 of each pair of supports are in the side view shown in Figure 1 arranged one behind the other, so that only one the bearing supports 21, 22 is visible.
  • the front bearing supports 21 are arranged near the front edge of the seat plate 2 and each have an elongated hole 21 'through which a first bearing pin 31 horizontally and transversely runs. This first bearing pin 31 is fixed to the Seat support 3 connected, which in turn by means of a Chair column receptacle 30 firmly with the upper end of the central Chair column 5 is connected.
  • the rear, second bearing supports 22 also have each an elongated hole 22 'through which a second bearing pin 32 runs.
  • This second bearing pin 32 is also firmly connected to the seat support 3 and runs parallel to the first bearing pin 31.
  • the elongated hole 22 'in the second bearing supports 22 run on a radius around the first, front bearing pin 31; the slot 21 ' in the front bearing supports 21 runs on a radius around the second bearing pin 32.
  • the backrest 4 'carrying the backrest 4 is at the illustrated embodiment by two backrest support parts 40, 40 '.
  • the backrest part 40 runs below the seat plate 2; at his rear It ends with the second backrest support part 40 'in Form of a plug connection connected, the height adjustment of the second backrest support part 40 'and the one thereon attached backrest 4 'allows.
  • the first backrest support part running under the seat plate 2 40 is by means of a bore 43 and a bearing pin 33, which is also firmly connected to the seat support 3 is pivotally mounted. Furthermore points the first backrest support part 40 one over the bearing pin 33, which is parallel to the two other bearing bolts 31 and 32 runs, forward-facing extension 41.
  • the chair 1 also comprises a compression spring arrangement, which are formed here by two helical compression springs 6 is.
  • the springs 6 are one behind the other in the side view arranged so that only one spring 6 in Figure 1 is visible.
  • With its upper end is the helical compression spring 6 supported on the underside of the seat plate 2 in an area between the front Bearing supports 21 and the rear bearing supports 22.
  • With its lower end is the helical compression spring 6 on the forward-facing extension 41 of the first backrest support part 40 supported, whereby the helical compression spring on the one hand on the seat plate 2 an upward Preload force and on the other hand over the first and the second back support part 40, 40 'on the Backrest 4 'a forward biasing force exercises.
  • the chair 1 is in a relieved state shown in the on the seat plate 2 and on the backrest 4 'no forces by a user of the Chair 1 can be exercised.
  • the pivot position of the Backrest support 4 is in this position by a stop limited by an elongated hole 42 in the first back support part 40 is formed. Through this slot 42 runs the second bearing pin 32, here the bearing pin 32 bears against the lower end of the elongated hole 32.
  • the chair 1 If the chair 1 is loaded by a user, it moves the seat plate 2 - depending on the body weight of the user - more or less far down. Under pressure the seat plate 2 is by a heavier user the spring assembly 6 more compressed and receives thereby a higher tension. This exerts the spring arrangement 6 a greater force on the extension 41 of the first backrest support part 40, what about leverage inevitably leads to that the backrest 4 'a receives higher preload force, i.e. the Supported user back with a higher force. At a lighter user of the chair 1 will Seat plate 2 pressed down correspondingly less, whereby the spring assembly 6 is less tensioned and then also the backrest 4 'is less Experiences preload force. The preload or Supporting force of the backrest adjusts itself automatically different weight users.
  • the chair 1 offers a synchronous mechanism that it allows the position of the seat plate 2 and backrest 4 'coupled to change. If a user leans back in chair 1, the Seat plate 2 lowered at the back, while the Backrest 4 'on the leverage that occurs is pivoted backwards.
  • the Backrest 4 'about a horizontally transverse axis pivotally mounted on the second backrest support part 40 ' be what a further improved customization of Backrest 4 'allows different users of the chair 1.
  • the chair column 5 is also known and conventional construction and is preferably adjustable in height and sprung, so that the chair 1 diverse adjustment options to different User offers, adjusting the preload force the backrest 4 'advantageously automatically in dependence the body weight of the user of the chair 1 he follows.
  • FIG 2 of the drawing of the chair 1 from Figure 1 illustrates the symmetrical Arrangement of the mechanics of the chair 1 on both sides of the Longitudinal central axis 10 of the chair.
  • the Seat support 3 In the middle is the Seat support 3, the one on its rear, on the right in FIG End the chair column holder 30 for connection to the here not visible chair column 5.
  • the Seat carrier 3 Across the Seat carrier 3 are the three bearing bolts 31, 32, 33 attached parallel to each other in the transverse direction of the chair 1 run under the seat plate 2.
  • the Ends of the bearing pins 31 and 32 are in the front and rear bearing supports 21, 22 and run through the therein provided elongated holes described in Figure 1 21 ', 22'.
  • Figure 2 shows that the first backrest part 40 is made in two parts with two parallel, sections running parallel to the longitudinal central axis 10.
  • the two sections of the first backrest support part 40 are pivotally mounted on the third bearing pin 33; before the third bearing pin, i.e. in Figure 2 left of which, are the extensions 41 of the two sections of the first backrest support part 40.
  • On these extensions 41 support the two helical compression springs 6 with its lower end, which faces the viewer here is. With her upper one facing away from the viewer End the helical compression springs 6 are supported on the The observer facing the underside of the seat plate 2.
  • Figure 2 illustrates the very compact design the mechanics of the chair 1, making it a simple Producibility and a compact design result.
  • the different, for the movements of the seat plate 2 and backrest support 4 with the backrest 4 'required Pivot axes 71, 72, 73 are through the bearing bolts 31, 32, 33 formed, this construction both stable as well as low in locking.
  • Figure 3 of the drawing shows as a second embodiment a conference or meeting chair 1, the instead of the central chair column now four chair legs 5 ' has, wherein in the side view shown in Figure 3 only the chair leg facing the viewer is recognizable.
  • This version of the chair 1 also includes one stable seat plate 2 with a cushion 20, being on the Underside of the seat plate 2 again the front and the rear bearing supports 21, 22 with their elongated holes 21 ', 22' are present.
  • the chair legs are 5 ' rigidly connected to one another via the seat support 3.
  • the three bearing bolts 31, 32, 33 again, which in turn are firmly connected to the seat support 3 are.
  • the backrest support 4 is designed throughout and again carries the backrest at its upper part 40 ' 4 '.
  • the part 40 of the backrest support lying under the seat plate 2 4 is pivotable on the bearing pin 33 on Seat support 3 stored.
  • the second, rear, runs here too Bearing pin 32 through an elongated hole 42 in the backrest support part 40 to limit its pivoting path.
  • the backrest support 4 also has an extension 41 here on, which runs forward about the pivot axis 33.
  • the compression spring arrangement is supported on the extension 41 6 with its lower end, the upper End here also bears against the underside of the seat plate 2.
  • the chair 1 behaves in accordance Figure 3 as the chair 1 according to Figures 1 and 2; also So here the preload force is automatically adjusted the backrest 4 'to the body weight of the user of the chair 1.
  • the Chair 1 according to Figure 3 the synchronous mechanism for coupled Swiveling of the seat plate 2 and backrest support 4 guaranteed with backrest 4 '.
  • a total height adjustment, as seen through the chair column 5 in the chair 1 1 is possible, the chair 1 has according to Figure 3 does not.
  • a separate height adjustment of the The backrest 4 ' is not in the chair 1 according to FIG. 3 intended.
  • the individual parts of the chair 1 can be simplified according to FIG.
  • the chair 1 in this version manufactured particularly inexpensive become. At the same time, it offers the user a high level Comfort thanks to the synchronous mechanism and the automatic Adjustment of the preload force of the backrest 4 'depending on the body weight of the respective user. Since also the entire mechanics of the chair 1 according to Figure 3 below the seat plate 2 very compact is, this chair 1 can, as from conventional rigid chairs known for storage and transportation purposes can be stacked, making it a very space-saving Order results.
  • the shown in Figure 4 as the third embodiment Chair 1 is designed as an office swivel chair and has as essential parts a seat plate 2, one Seat support 3, a backrest support 4 for one not here illustrated backrest arranged further up, a central chair column 5 with a likewise not shown here Cross base at its lower end and a spring arrangement 6 between seat plate 2 and backrest support 4.
  • the seat plate 2 is a stable plate that on the top with a cushion, not shown here can be provided.
  • the underside of the seat plate 2 is a support member 23 each with a left and right downward facing cheek 23 '. Near the in the drawing on the left front edge of the seat plate 2 each have the cheeks 23 'of the support component 23 an elongated hole 21 'through which a first bearing pin 31 runs horizontally and transversely.
  • This first bearing pin 31 is firmly connected to the seat support 3, which in turn by means of a centrally under the seat plate 2 lying chair column holder 30 firmly with the upper end the central chair column 5 is connected.
  • the backrest support 4 is in the illustrated embodiment formed by two backrest support parts 40, 40 '.
  • the backrest part 40 runs below the seat plate 2; at its rear end is the second one Backrest support part 40 'connected by means of a plug connection, an adjustment of the second back support part 40 'with the backrest attached to it.
  • the first backrest support part running under the seat plate 2 40 is by means of a third bearing pin 33, which is also firmly connected to the seat support 3, pivotally mounted on the seat support 3. Farther the first backrest support part 40 has one over the bearing pin 33, parallel to the other two bearing bolts 31, 32 runs, forward-facing extension 41.
  • the support member 23 and the backrest support part are here 40 via a driver 24 in the form of a short Lever hinged together to ensure synchronicity the pivoting of seat plate 2 and backrest to effect.
  • the chair 1 also includes the spring arrangement 6, which is formed here by two leg springs 60.
  • the leg springs 60 are one behind the other in the side view arranged so that only one spring 60 in Figure 4 is visible.
  • the leg spring 60 has a spiral Spring body 61, which around the third pivot axis 73 forming bearing bolt 33 runs around and on this concentrically by means of an unspecified holder is supported. From the spring body 61 run tangentially an upper spring leg 62 and a lower one Spring legs 64 approximately parallel to each other forward.
  • the first, upper spring leg is near its free end 62 of the leg spring 60 on the underside of the seat plate 2 supported in an area between the bearing bolts 31 and 33.
  • a pressure piece 63 as part of the support member 23 provided at the bottom of the Seat plate 2 is attached.
  • the Spring leg 62 On the pressure piece 63 are the Spring leg 62 on.
  • lower spring leg 64 With her second, lower spring leg 64 is the leg spring 60 on the front pointing extension 41 of the first backrest support part 40 supported, whereby the leg spring 60 on the one hand an upward biasing force on the seat plate 2 and on the other hand about the first and the second backrest support part 40, 40 'on the backrest exerts forward bias.
  • the chair 1 is in a relieved state shown in the on the seat plate 2 and on the backrest and its backrest support parts 40, 40 'none Forces are exerted by a user of the chair 1.
  • the pivot position of the backrest support 4 is limited in this position by a stop that formed by the elongated hole 42 in the first backrest support part 40 is.
  • the second runs through this slot 42 Bearing pin 32, here the bearing pin 32 at the bottom End of the elongated hole 42 abuts.
  • the chair 1 If the chair 1 is loaded by a user, it moves the seat plate 2, depending on the body weight of the user, more or less far down. Under pressure the seat plate 2 by a heavier user the spring legs 62, 64 of the leg springs 60 stronger compressed and the leg springs 60 thereby get a higher tension. As a result, the springs 60 practice also a greater force on the extension 41 of the first Backrest part 40 from what about the leverage inevitably causes the backrest to have a higher one Prestressing forward, i.e. the back of the user supported with a higher force. At a lighter user of the chair 1 will be the seat plate 2 pressed correspondingly less down, whereby the springs 60 can be tensioned less and then the backrest also has a lower preload force experiences. The preload or support force the backrest adjusts itself differently heavy users.
  • the chair 1 offers a synchronous mechanism that ensures that when using the chair 1 Positions of seat plate 2 and backrest 4 'coupled change with each other. If a user is on the Chair 1 leans back, the seat plate 2 is at the back more stressed and lowered there, at the same time by means of the driver 24, the backrest over the occurring leverage in a fixed swivel angle ratio is pivoted backwards. If the synchronous mechanism is simply not desired be eliminated by omitting the driver 24.
  • the Backrest around a horizontal, transverse axis pivotally mounted on the second backrest support part 40 ' be what a further improved customization of Backrest allows different users of the chair 1.
  • the chair column 5 is also known and usual construction and is preferably adjustable in height as well as sprung, so that the chair 1 overall varied Customization options for different users offers.
  • the setting of the preload Backrest is advantageously carried out automatically depending the body weight of the user of the chair 1, so that manual adjustments are not necessary.
  • FIG. 5 The bottom view shown in Figure 5 of the drawing of the chair 1 from Figure 4 illustrates the symmetrical Arrangement of the mechanics of the chair 1 on both sides of the Longitudinal central axis 10 of the chair.
  • the Seat support 3 In the middle is the Seat support 3, the one on its rear, right in Figure 5 End the chair column holder 30 for connection to the here not visible chair column 5.
  • the Seat carrier 3 Across the Seat carrier 3 are the three bearing bolts 31, 32, 33 attached parallel to each other in the transverse direction of the chair 1 run under the seat plate 2, the is not shown here.
  • the ends of the bearing bolts 31 and 32 are in the two side cheeks 23 'of the Support member 23 and run through the provided therein elongated holes 21 ', 22' described in FIG.
  • FIG. 5 also shows that the first backrest support part 40 one-piece as a flat strip with two parallel, parallel to the longitudinal central axis 10 lateral Bends is executed.
  • the first backrest part 40 is pivotable on the third bearing pin 33 stored; before the third bearing pin, i.e. in figure 5 to the left of this is the extension 41 of the first backrest support part 40.
  • Base on this extension 41 the two leg springs 60 with their spring legs 64 from. With their spring legs 62 they are supported Leg springs 60 on the underside facing the viewer the one not shown here lying in the background Seat plate 2 from.
  • Figure 5 illustrates the very compact design the mechanics of the chair 1, making it a simple Feasibility and a "light" appearance of chair 1.
  • the three for the movements of seat plate 2 and backrest support 4 with the backrest required pivot axes 71, 72, 73 are by the Bearing pin 31, 32, 33 formed, this construction is both stable and low-wear.
  • Figures 6 and 7 of the drawing show as a fourth embodiment another office swivel chair 1, the also has a central chair column 5, wherein in the partial side view shown in Figure 6 only that upper end of the chair column is recognizable, that with the middle end of the seat support lying under the seat plate 2 3 is connected.
  • This version of the chair 1 also includes one stable seat plate 2, each on the underside separate front bearing supports 21 with one each vertical slot 21 'and rear bearing supports 22nd available.
  • the backrest support 4 is also made in two parts and carries on its upper part 40 ', not shown Backrest.
  • the part under the seat plate 2 40 of the backrest support 4 is by means of the bearing pin 33 mounted on the seat support 3 so as to be pivotable about the pivot axis 73.
  • the second, rear bearing pin also runs here 32 through an elongated hole 42 in the backrest support part 40, wherein here the slot 42 in the longitudinal direction of the backrest support part 40 runs through this, for its free pivoting to enable.
  • the backrest support 4 also has one with the backrest support part 40 one-piece extension 41 on the over the pivot axis 73 runs forward.
  • a torsion bar spring 60 ' is installed as spring element 6.
  • This spring 60 ' has two torsion stresses
  • Spring sections 61 ' which cross the chair through the Elongated holes 21 'run and at the same time as the first pivot axis 71 serve.
  • two further spring levers lie between the spring sections 61 ' 64 ', which also run in the rearward direction and those connecting in one of their free ends Area on the extension 41 of the backrest support part 40 are supported.
  • the spring 60 'shown here is as symmetrical double spring and is in one piece made from a correspondingly bent spring steel rod.
  • the torsion bar spring 60 ' is biased so that its Spring lever 62 ', 64' on the seat plate 2 the desired upward force and on the extension 41 exert the desired downward force, as indicated by the arrows on the spring levers 62 ', 64' is.
  • the chair 1 behaves according to Figures 6 and 7 as the chair 1 according to Figure 4 and 5; here too there is an automatic adjustment the preload force of the backrest on the body weight of the user of the chair 1. Also, at the chair 1 according to Figures 6 and 7, the synchronous mechanism for coupled pivoting of seat plate 2 and Backrest support 4 with backrest guaranteed.
  • a total height adjustment like that through the chair column 5 is possible with chair 1 according to FIGS. 4 and 5, can also have the chair 1 according to Figures 6 and 7. Also a separate height adjustment of the backrest can the chair 1 according to Figures 6 and 7 can be provided.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
EP00113435A 1999-07-06 2000-06-24 Chaise Expired - Lifetime EP1066775B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19931099 1999-07-06
DE19931099A DE19931099C2 (de) 1999-07-06 1999-07-06 Stuhl mit selbständiger Anpassung der Vorbelastungskraft der Rückenlehne
DE10026292A DE10026292C2 (de) 1999-07-06 2000-05-26 Stuhl
DE10026292 2000-05-26

Publications (2)

Publication Number Publication Date
EP1066775A1 true EP1066775A1 (fr) 2001-01-10
EP1066775B1 EP1066775B1 (fr) 2004-04-21

Family

ID=26005853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00113435A Expired - Lifetime EP1066775B1 (fr) 1999-07-06 2000-06-24 Chaise

Country Status (5)

Country Link
US (1) US6523896B1 (fr)
EP (1) EP1066775B1 (fr)
AT (1) ATE264636T1 (fr)
CA (1) CA2313565C (fr)
DE (2) DE10026292C2 (fr)

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WO2001091613A1 (fr) * 2000-05-27 2001-12-06 Röder, Peter Chaise
EP1256292A1 (fr) * 2001-05-11 2002-11-13 ITO Design und Marketing Armin Sander Une chaise de bureau ajustable
WO2004095984A3 (fr) * 2003-04-25 2005-03-31 Armin Sander Siege, notamment siege de bureau comportant un mecanisme synchrone
EP1865811A1 (fr) * 2005-03-26 2007-12-19 Sander, Armin Siege notamment pour le bureau
EP2572605A1 (fr) * 2011-09-20 2013-03-27 Wen-Shan Ko Appareil de guidage de siège pour chaise

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DE10109624C1 (de) * 2001-02-28 2002-09-12 Interstuhl Bueromoebel Gmbh Stuhl, insbesondere Bürostuhl
DE10126001A1 (de) * 2001-05-18 2002-11-21 Bock 1 Gmbh & Co Vorgespannte Federanordnung, insbesondere zur Federbeaufschlagung von Synchronmechaniken von Bürostühlen
JP4137536B2 (ja) * 2002-07-03 2008-08-20 コクヨ株式会社 椅子
EP1527714B1 (fr) * 2002-07-23 2008-11-26 Okamura corporation Chaise
US6896328B2 (en) * 2002-12-18 2005-05-24 Hon Technology Inc. Steel wire chair with springs
US7147285B2 (en) * 2004-01-20 2006-12-12 Tung Yu Oa Co., Ltd. Reclining apparatus for chair
US20090015050A1 (en) * 2004-03-13 2009-01-15 Hans Dehli Articulating chair
WO2005089200A2 (fr) * 2004-03-13 2005-09-29 Interactive Health, Llc Chaise articulee
CN101431923B (zh) * 2006-04-24 2012-03-28 休思乐公司 具有自动调节抗倾斜性能的椅子
DE202007006762U1 (de) * 2006-10-13 2008-02-14 Bock 1 Gmbh & Co. Kg Mechanik für einen Bürostuhl
US20080232962A1 (en) * 2007-03-20 2008-09-25 Agrawal Giridhari L Turbomachine and method for assembly thereof using a split housing design
US8646839B2 (en) * 2008-06-17 2014-02-11 Co.Fe.Mo. Industrie S.R.L. Adjustment device for chairs
DE102009009287A1 (de) * 2009-02-17 2010-09-09 Uhlenbrock, Christel Sitzmöbel, insbesondere Bürodrehstuhl
US8272692B1 (en) * 2009-10-26 2012-09-25 Epperson Ronald B Office chair having tiltable seat and back
SG186286A1 (en) 2010-06-15 2013-02-28 Claudia Plikat Chair
DE102011001811A1 (de) * 2011-04-05 2012-10-11 Wilkhahn Wilkening + Hahne Gmbh + Co. Kg Stuhl
US9504326B1 (en) 2012-04-10 2016-11-29 Humanscale Corporation Reclining chair
WO2013177690A1 (fr) * 2012-06-01 2013-12-05 Duke Aaron Siège et ensemble de commande d'inclinaison de siège
US9706845B2 (en) 2012-09-20 2017-07-18 Steelcase Inc. Chair assembly
WO2015161281A1 (fr) 2014-04-17 2015-10-22 Hni Technologies Inc. Chaise et ensembles, systèmes et procédés de commande de chaise
US10966527B2 (en) 2017-06-09 2021-04-06 Steelcase Inc. Seating arrangement and method of construction
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US10194750B2 (en) 2015-04-13 2019-02-05 Steelcase Inc. Seating arrangement
US10021984B2 (en) 2015-04-13 2018-07-17 Steelcase Inc. Seating arrangement
US9713381B2 (en) 2015-06-11 2017-07-25 Davis Furniture Industries, Inc. Chair
US10383448B1 (en) 2018-03-28 2019-08-20 Haworth, Inc. Forward tilt assembly for chair seat
CN108371436B (zh) * 2018-04-25 2023-10-27 严澄宇 弹力跷跷板式的自由倾仰机构及自由调节转椅

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WO2001091613A1 (fr) * 2000-05-27 2001-12-06 Röder, Peter Chaise
EP1256292A1 (fr) * 2001-05-11 2002-11-13 ITO Design und Marketing Armin Sander Une chaise de bureau ajustable
US6896329B2 (en) 2001-05-11 2005-05-24 Armin Sander Chair, in particular office chair
WO2004095984A3 (fr) * 2003-04-25 2005-03-31 Armin Sander Siege, notamment siege de bureau comportant un mecanisme synchrone
EP1865811A1 (fr) * 2005-03-26 2007-12-19 Sander, Armin Siege notamment pour le bureau
EP2572605A1 (fr) * 2011-09-20 2013-03-27 Wen-Shan Ko Appareil de guidage de siège pour chaise

Also Published As

Publication number Publication date
DE10026292C2 (de) 2003-03-20
CA2313565C (fr) 2005-09-27
DE50006123D1 (de) 2004-05-27
CA2313565A1 (fr) 2001-01-06
DE10026292A1 (de) 2001-12-20
EP1066775B1 (fr) 2004-04-21
US6523896B1 (en) 2003-02-25
ATE264636T1 (de) 2004-05-15

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