EP3741259A1 - Élément de support pour siège - Google Patents

Élément de support pour siège Download PDF

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Publication number
EP3741259A1
EP3741259A1 EP20000183.2A EP20000183A EP3741259A1 EP 3741259 A1 EP3741259 A1 EP 3741259A1 EP 20000183 A EP20000183 A EP 20000183A EP 3741259 A1 EP3741259 A1 EP 3741259A1
Authority
EP
European Patent Office
Prior art keywords
support
seat
connecting elements
seat support
base 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.)
Pending
Application number
EP20000183.2A
Other languages
German (de)
English (en)
Inventor
Hermann Bock
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.)
Bock 1 GmbH and Co KG
Original Assignee
Bock 1 GmbH and Co KG
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
Application filed by Bock 1 GmbH and Co KG filed Critical Bock 1 GmbH and Co KG
Publication of EP3741259A1 publication Critical patent/EP3741259A1/fr
Pending 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
    • A47C9/00—Stools for specified purposes
    • A47C9/002—Stools for specified purposes with exercising means or having special therapeutic or ergonomic effects
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/18—Chairs or stools with rotatable seat
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/021—Rocking chairs having elastic frames
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A47C3/0252—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame connected only by an elastic member positioned between seat and base frame
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • A47C3/30—Chairs or stools with vertically-adjustable seats with vertically-acting fluid cylinder
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/002—Chair or stool bases
    • A47C7/006—Chair or stool bases with castors
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/025—Springs not otherwise provided for in A47C7/22 - A47C7/35
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions

Definitions

  • the invention relates to a support component for a seat device, in particular for a stool.
  • seating furniture has placed great value on dynamic, active sitting that is advantageous from an ergonomic point of view.
  • the user is given the opportunity to adopt different sitting postures by appropriately designing the seating furniture.
  • the term "moving sitting” is used.
  • An object of the present invention is to provide a seat device, in particular a stool, which is ergonomically advantageous from the point of view of "moving sitting". This object is achieved by a support component according to claim 1 or by a seat device according to claim 10.
  • Advantageous embodiments of the invention are specified in the subclaims.
  • the support component according to the invention has a base support that can be placed on a foot part, in particular on a chair column, and a seat support arranged on the base support, the seat support being integral with the The base support is formed, thereby forming a base support-seat support unit, and wherein the base support is connected to the seat support via a number of connecting elements, the number of connecting elements allowing the seat support to pivot or wobble relative to the base support by moving under load deform the seat support, the number of connecting elements being acted upon by a restoring torque in the event of such a load on the seat support.
  • the seat device according to the invention in particular a stool, has a foot part and a carrier component according to the invention placed on the foot part, in particular on a chair column.
  • a core idea of the invention is that the seat support carrying the seat is connected to the fixed base support of the seat device by a suitably designed intermediate structure, here the connecting elements, in such a way that the intermediate structure undergoes a reversible deformation under load. It is thus achieved that when the center of gravity of the upper body of a user of the seat device is shifted, the seat follows this movement of the user without the need for structurally complex means.
  • the main components of the carrier component namely the base carrier, seat carrier and intermediate structure, are made in one piece, which facilitates both manufacture and assembly. This structurally very simple solution manages without additional movable and / or interacting mechanical components.
  • the carrier component fulfills a double function.
  • the support component is preferably designed in such a way that the pivoting or tumbling movement of the seat support takes place on all sides, ie in all directions.
  • the deformation of the intermediate structure caused by the load on the seat support is reversible.
  • the elasticity of the intermediate structure causes a restoring moment through which the deformed intermediate structure automatically moves back into its non-deformed original shape as soon as the forces or moments acting on it cease to exist.
  • the support component is designed so that the connecting elements are stressed in bending and / or torsion when the seat support is loaded, with an automatically adjusting, preferably freely changeable, ratio of the bending components to the torsion components for each individual connecting element Movement results, which relationship depends on the one hand on the location of the force input into the seat support, which is dependent on the position of the user, and on the other hand on the number, arrangement and / or design of the connecting elements, in particular on the choice of locations for connecting the connecting elements to the base support and the Seat support.
  • each individual connecting element When a force is applied to the seat support through a load on the seat support by a user, each individual connecting element experiences an element-specific loading, which results in a bending of the connecting element (typically along the connecting element) and / or in a torsion of the connecting element (typically around the connecting element's longitudinal axis). If the user moves on the seat, the force input also changes, in particular the location of the application of force to the seat support, and each individual connecting element reacts to it in such a way that the ratio of the flexural components to the torsional components of the movement changes.
  • each connecting element can perform a movement with a proportion of bending between 0% and 100% and a proportion of torsion between 0% and 100% .
  • one and the same connecting element can perform a movement with a bending component of 70% and a torsion component of 30% during a first stressed state of the seat support or during a first point in time of a movement of the user and during a subsequent second stressed state of the seat support or perform a movement with a bending component of 20% and a torsion component of 80% during a second point in time of a movement by the user.
  • the support component due to the structural design of the support component, a change in the ratios of bending components to torsion components of the movement of the connecting elements is not perceived by a user of the seat device.
  • the user does not feel that the bending and torsional forces or moments act only proportionally on the individual connecting elements, nor does the change or the change in the ratio of the proportions. Instead, the user has uninterrupted mobility of the seat.
  • the mobility of the seat felt by the user is not interrupted by the fact that the seat support a "Zero position" passes through, in which the seat support has no lateral inclination.
  • the number and arrangement of the connecting elements influence the movement behavior of the seat as a function of the location of the application of force when the seat is loaded by a user.
  • the seat support is connected to the base support via a plurality, preferably at least four, connecting elements.
  • Other preferred values for the number of fasteners are five and six.
  • the connecting elements are preferably separate, e.g. arranged spaced from each other.
  • the connecting elements are preferably arranged symmetrically between the base support and seat support.
  • the connecting elements are arranged rotationally symmetrical, in particular with respect to the vertical longitudinal axis of the base support, which, at least in the preferred application of a stool, typically corresponds to the longitudinal axis of the base of the seat device.
  • the seat support and the seat arranged on it
  • the user feels a counterforce of the same magnitude at all times when the seat support is pivoted or wobbled. This is advantageous for a comfortable sitting feeling.
  • connecting elements are arranged in a rotationally symmetrical manner, there is no preferred direction of the swiveling or tumbling movement of the seat support. This is particularly desirable when the invention is used in stools.
  • a desired preferred direction of the pivoting or tumbling movement of the seat support can be established. This can be desirable in particular in the case of specially shaped seats, such as for example saddle seats.
  • the number of connecting elements is minimized.
  • the base support is connected to the seat support via a single connecting element.
  • a preferred direction of movement of the seat support results, corresponding to the magnitude of the resistance to the deformation of the connecting elements.
  • the number of connecting elements is maximized in such a way that the connecting elements are no longer separated from one another, but are connected to one another.
  • the result is a closed, preferably tulip-shaped or trumpet-shaped, flat connecting wall between the base support and the seat support.
  • a change in the center of gravity of the user sitting on the seat then leads to a kind of flexing movement of the connecting wall.
  • the intended pivoting or wobbling movement of the seat support can also be implemented in this case.
  • the base support / seat support unit is produced from a plastic material and in a single operation, in particular by injection molding.
  • a steel sleeve is advantageously overmolded at the same time, which later forms the conical receptacle for receiving a gas spring of a height-adjustable stand; the base support then also includes a gas spring height release, which however, it is designed as an extra component and does not belong to the one-piece base support-seat support unit.
  • a material suitable for producing the base support / seat support unit has, on the one hand, the necessary rigidity to ensure the required stability and strength of the support component. On the other hand, the material is elastic enough to provide the desired flexibility of the intermediate structure during the pivoting or wobbling movement of the seat support.
  • the base support-seat support unit has both (load-bearing) areas of greater rigidity (in particular rigid areas) and (flexible) areas of lower rigidity, i.e. Areas with a low resistance to elastic deformation due to a bending or torsional moment or, in other words, areas of comparatively strong deformability (bendability, twistability).
  • the areas of greater rigidity are in particular the base support, the seat support and the connection areas of the connecting elements. These areas are preferably rigid or essentially rigid.
  • the areas of lower rigidity are, in particular, the central sections of the connecting elements which are located between the connection areas and which must be designed to be flexible and twistable in order to implement the invention.
  • the information "greater” and “less” always relate to a comparison of the stiffness values of the other areas.
  • the different deformation properties of these areas can only be traced back to the respective part geometry, in particular the cross-sectional shapes and material thicknesses used.
  • the manufacture of the one-piece base support / seat support unit in particular by plastic injection molding, only a single material is preferably used. It is then not necessary to use several materials or to change the material or the material composition during injection molding.
  • the connecting elements are designed as rod-shaped struts or posts.
  • the connecting elements each have a substantially straight central section with lower rigidity and, adjoining both ends of the central section, connection areas with greater rigidity for connecting the connecting element to the base support and the seat support.
  • the connecting elements are preferably essentially unchangeable in length.
  • the result is an open design, in particular if, according to a particularly preferred embodiment, the intermediate structure is the only component between the base support and the seat support, i.e. the struts bridge a gap between the base support and the seat support, in which there is no other component.
  • the seat device can therefore also have a particularly low weight.
  • the filigree, open structure of the intermediate construction, especially when using the preferred number of connecting elements, is also very visually appealing.
  • the struts which are openly accessible from the outside, also serve as handles for handling the seat device.
  • the seat support and / or the base support are designed to be essentially rotationally symmetrical, i. E. at least with regard to their basic shape, in particular with regard to their outer shapes or lateral surfaces on which the connecting elements engage with their connection areas.
  • the seat support is annular and the base support is pot-shaped.
  • the ring shape of the seat support which proves to be particularly advantageous when the seat device is designed as a stool, has the necessary rigidity to prevent the seat support from bending or twisting when the seat support is loaded by the user.
  • the necessary rigidity of the ring can be achieved by a suitable profile geometry, preferably by a ring cross-section stiffened by means of a stiffening rib.
  • a seat support in the form of a disk can also be used.
  • the (preferably four) connecting elements are evenly distributed over the circumference of the base support and seat support.
  • the connecting elements extend from the base support radially (and since the base support pot has a smaller diameter than the seat support ring, obliquely upwards) to the seat support, preferably in such a way that the distance between the connection areas of the connecting elements on the base support is less than the distance between the connection areas of the connecting elements on the seat support.
  • the invention can be used particularly advantageously in the case of a stool. While there is always a preferred sitting direction in a typical office chair due to the presence of a backrest and the mechanical components of the chair are therefore always geared towards a movement in this sitting direction, there is no preferred sitting position in a conventional stool due to the design. Instead, the user is free to choose the seating position.
  • the seat and thus preferably also the seat support, are designed in such a way that it does not predetermine a preferred sitting position (in the sense of a preferred position). In other words, there is no "front” or "back”. The user is free in the way he sits on the seat.
  • the seat device according to the invention is, as in Fig. 1 illustrated, designed as a stool 1 and has a foot part 2 provided with rollers with a chair column 3, which is adjustable in height by means of a gas spring (not shown).
  • a support component 4 according to the invention is placed on the chair column 3.
  • the actual seat 10, which typically provides an upholstered seat surface, is attached to the carrier component.
  • Support component 4 shown separately has a base support 5 with a centrally placed cone mount 6 for the chair column 3 and a seat support 7 arranged on the base support 5, the seat support 7 being formed in one piece with the base support 5 and forming a base support / seat support unit.
  • the base support-seat support unit is manufactured from a single plastic material by injection molding.
  • the base support 5 comprises a gas spring height release 8 as a separate assembly.
  • the base support 5 is essentially rotationally symmetrical and has a pot-shaped, downwardly tapering base body 11, in which the conical receptacle 6 is integrated with an opening 9 pointing downward in the direction of the foot part 2.
  • the height release 8 is placed above the cone mount 6.
  • a handle 12 for actuating the height release 8 protrudes radially out of the base body 11.
  • the base body 11 is covered at the top by a cover 13.
  • the seat support 7 is designed to be essentially rotationally symmetrical and essentially consists of an annular one Base body 15, which is designed in the manner of a circular ring, on the top side 16 of which a circumferential reinforcing rib 17 is attached.
  • Four evenly spaced assembly openings 18 are integrated into the stiffening rib 17 for screwing the seat support 7 to the seat 10.
  • the base support 5 is connected to the seat support 7 via four connecting elements 21. These connecting elements 21 thus also belong to the one-piece base support / seat support unit.
  • the connecting elements 21 are designed as rod-shaped, essentially length-invariable struts.
  • the slender struts 21 engage with their connection areas 22 on the underside 23 of the seat support base body 15 on the one hand and on the lateral surface 19 of the base support base body 11 below the cover 13 on the other hand and extend from the base support 5 radially, running obliquely upwards to the seat support 7
  • the connection areas 22 of the struts 21 are each evenly distributed over the circumference of the base support 5 or seat support 7 and are thus evenly spaced from one another.
  • the distance between the connecting areas 22 on the base support 5 is smaller than the distance between the connection areas 22 on the seat support 7.
  • the struts 21 allow the seat support 7 to pivot or tumble in all directions (see arrows 14 in FIG Fig. 1 ) relative to the base support 5, in that they deform when the seat support 7 is loaded, whereby they with such a load on the seat support 7 are acted upon by a restoring torque which allows them to move back into their starting position when the forces or moments acting on them cease to exist.
  • the essentially straight central sections 24 of the struts 21 have a lower rigidity than the connecting areas 22 adjoining both ends of the central section 24 for connecting the struts 21 to the base support 5 and the seat support 7.
  • This lower rigidity of the central sections 24 causes the Desired deformability of the struts 21.
  • the connection areas 22, however, have greater rigidity, so that the struts 21 are not deformable there even when the seat support 7 is loaded.
  • the connection of the struts 21 to the base support 5 and seat support 7 is implemented as a rigid connection in a flexural and torsion-proof manner. In other words, the struts 21 are firmly clamped at their two ends between the base support 5 and seat support 7.
  • the struts 21 are stressed in bending and / or torsion when the seat support 7 is loaded, with each strut 21 having a certain ratio of the bending components to the torsion components that changes when the load on the seat support 7 changes. Since the four struts 21 are arranged rotationally symmetrically with respect to the vertical longitudinal axis 25 of the base carrier 5, there is no preferred direction of the pivoting or tumbling movement of the seat carrier 7.
  • the support component can also be rotatable on the chair column,

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  • Chairs Characterized By Structure (AREA)
EP20000183.2A 2019-05-20 2020-05-12 Élément de support pour siège Pending EP3741259A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019113240.1A DE102019113240A1 (de) 2019-05-20 2019-05-20 Trägerbauteil für eine Sitzvorrichtung

Publications (1)

Publication Number Publication Date
EP3741259A1 true EP3741259A1 (fr) 2020-11-25

Family

ID=70682565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000183.2A Pending EP3741259A1 (fr) 2019-05-20 2020-05-12 Élément de support pour siège

Country Status (3)

Country Link
EP (1) EP3741259A1 (fr)
CN (1) CN111955976A (fr)
DE (1) DE102019113240A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3991604A1 (fr) * 2020-10-29 2022-05-04 Froli Kunststoffwerk Heinrich Fromme, Inhaberin Margret Fromme-Ruthman e. Kfr. Élément ressort pour siège, agencement pour siège et siège

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060055220A1 (en) * 2002-09-12 2006-03-16 Heidmann Kurt R Seating unit with novel flexible supports
US20120086251A1 (en) * 2006-10-04 2012-04-12 Formway Furniture Limited Chair
US20160220025A1 (en) * 2014-11-11 2016-08-04 Pro-Cord S.P.A. Chair with seat and backrest movable in a synchronized way
WO2017029409A1 (fr) * 2015-07-03 2017-02-23 Inventor Group Gmbh Suspension de chaise multidimensionnelle

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160128481A1 (en) * 2014-11-11 2016-05-12 Pro-Cord S.P.A. Chair with seat and backrest movable in a synchronized way
DE102017208151A1 (de) * 2016-10-24 2018-04-26 Stabilus Gmbh Stellvorrichtung zur Betätigung einer Bremse und mobile Einheit, insbesondere Stuhl
CN107259852A (zh) * 2017-06-29 2017-10-20 浙江恒林椅业股份有限公司 一种坐具及其倾斜摇摆装置
CN108514259B (zh) * 2018-04-16 2024-02-09 恒林家居股份有限公司 一种坐具

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060055220A1 (en) * 2002-09-12 2006-03-16 Heidmann Kurt R Seating unit with novel flexible supports
US20120086251A1 (en) * 2006-10-04 2012-04-12 Formway Furniture Limited Chair
US20160220025A1 (en) * 2014-11-11 2016-08-04 Pro-Cord S.P.A. Chair with seat and backrest movable in a synchronized way
WO2017029409A1 (fr) * 2015-07-03 2017-02-23 Inventor Group Gmbh Suspension de chaise multidimensionnelle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3991604A1 (fr) * 2020-10-29 2022-05-04 Froli Kunststoffwerk Heinrich Fromme, Inhaberin Margret Fromme-Ruthman e. Kfr. Élément ressort pour siège, agencement pour siège et siège

Also Published As

Publication number Publication date
CN111955976A (zh) 2020-11-20
DE102019113240A1 (de) 2020-11-26

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