EP3437519A1 - Mécanisme basculant - Google Patents

Mécanisme basculant Download PDF

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Publication number
EP3437519A1
EP3437519A1 EP18000637.1A EP18000637A EP3437519A1 EP 3437519 A1 EP3437519 A1 EP 3437519A1 EP 18000637 A EP18000637 A EP 18000637A EP 3437519 A1 EP3437519 A1 EP 3437519A1
Authority
EP
European Patent Office
Prior art keywords
seat support
chair
support
pivot axis
seat
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
EP18000637.1A
Other languages
German (de)
English (en)
Other versions
EP3437519B1 (fr
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 EP3437519A1 publication Critical patent/EP3437519A1/fr
Application granted granted Critical
Publication of EP3437519B1 publication Critical patent/EP3437519B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting chairs
    • 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
    • A47C3/0255—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame pivotally mounted in the base frame, e.g. swings

Definitions

  • the invention relates to a rocking mechanism and a chair with a rocking mechanism, preferably a visitor or conference chair.
  • Rocking mechanisms are known from the prior art. These are comparatively simple assemblies in the seat base of chairs, in which the backrest support is rigidly connected to the seat support, the seat or the frame of the chair. The resulting seat carrier backrest support combination is pivotable by means of the tilt mechanism to a transverse to the chair longitudinal direction pivot axis to the rear when the user of the chair leans against the backrest.
  • Such rocking mechanisms are often used instead of synchronous mechanisms in inexpensive visitor or conference chairs to realize there a simple Wippfunktion.
  • Wippmechaniken are often very simple, but they are, mostly for cost reasons, not designed to save space. On the contrary, they often require a comparatively large space, so that they can be seen as a clearly visible from the outside assembly in the seat base. This results in disadvantages, both aesthetically and constructively.
  • An object of the invention is to avoid these disadvantages and to provide a chair which has a small-scale rocking mechanism.
  • the Wippmechanik should also be structurally simple design at the same time.
  • the rocking mechanism according to the invention therefore comprises a base support having a Konusfact, by means of which it can be placed on a chair column of the chair, and a seat support which is pivotally connected to the base support via a transverse to the chair longitudinal direction pivot axis, wherein the seat support both after is pivotable at the rear as well as towards the front.
  • the tilt mechanism comprises a number of spring elements which cooperate with the seat support on the one hand and with the base support on the other hand, for returning the seat support from a pivoted position to a starting position.
  • the number of spring elements seen in chair longitudinal direction are arranged on both sides of the pivot axis and asymmetrically to the pivot axis.
  • the spring elements are arranged according to the invention asymmetrically to the pivot axis, a relatively small-scale rocking mechanism can be provided. At the same time it is possible to make the construction structurally simple.
  • the rocking mechanism according to the invention is therefore particularly advantageous when only a limited space is available and / or cost reasons, a particularly simple structure is desired.
  • the proposed rocking mechanism differs from the known from the prior art unilaterally pivoting mechanisms in that a pivoting (lowering, tilting, rocking or tilting) of the seat support in the manner of a rocker after both sides, so both backwards and forwards is possible.
  • the proposed tilt mechanism differs by the asymmetric arrangement of the spring elements. While in the previous rocker mechanisms, the springs always seen in chair longitudinal direction must be arranged symmetrically to the pivot axis, otherwise it inevitably leads to a misalignment of the mechanism, more precisely the seat support in the starting position, this is not the case with the tilt mechanism proposed here. There are no structural restrictions in this regard in the prior art. Since no symmetrical structure of the mechanics is more necessary, now also various design solutions can be realized, the realization of which was previously impossible due to the aforementioned design limits.
  • the in Fig. 1 illustrated conference chair 100 has a rocking mechanism 10, wherein the rocking mechanism 10 with respect to its central longitudinal plane, as far as the actual kinematics is concerned, is constructed mirror-symmetrically. In that regard, it should be assumed in the following description of both sides in pairs existing construction elements of the rocking mechanism 10 in the rule.
  • the rocking mechanism 10 comprises a fixed base support 1, which is set by means of a cone seat 2 on the upper end of a chair column 3 of the conference chair 100.
  • the immovable base support 1 is constructed substantially plate-shaped.
  • a seat support 4 is provided, which is also constructed substantially plate-shaped and is connected with its rear end directly or indirectly with a backrest support 5.
  • the seat 6 carried by the seat support 4 and the backrest 7 carried by the backrest support 5 are only in Fig. 1 indicated, but omitted in the other figures for the sake of clarity.
  • the seat support 4 is pivotally connected to the base support 1 via a pivot axis 8 in the chair longitudinal direction 9, the front area of the base support 1.
  • This is preferably the only pivot axis 8, which connects the seat support 4 with the base support 1.
  • this pivot axis 8, apart from a number of spring elements, is the only connection between Seat support 4 and base support 1.
  • the entire seat 6 together with the backrest 7 can be pivoted relative to the fixed to the chair column 8 base support 1 forward and backward.
  • a pivoting about the single pivot axis 8 forward means tilting the seat support 4 and thus all connected to the seat support 4 components forward, in other words lowering the front portion of the seat support 4 and the Weglichkante 12.
  • Fig. 2 is shown a starting position in which the seat support 4 assumes a substantially horizontal position.
  • Fig. 3 shows a rocking mechanism 10 in a maximum forward pivoted position
  • Fig. 4 shows this Wippmechanik 10 in a maximum rearwardly pivoted position.
  • the pivot axis 8 seen in chair longitudinal direction 9 is arranged eccentrically relative to the base support 1. This results in an asymmetrical structure of the mechanism 10 in the chair longitudinal direction 9, ie an asymmetrical arrangement of the pivot axis 8 and / or the number of spring elements.
  • the eccentric arrangement results in increased sitting comfort for the user. If one starts from an approximately central arrangement of the cone seat 2 in the base support 1, the pivot axis 8 is accordingly arranged in the chair longitudinal direction 9 next to the cone seat 2. By this staggered arrangement of the pivot axis 8, the height of the tilt mechanism 10 can be kept low. Compared to such rocking mechanisms, where the Swivel axis 8 is provided directly over the cone seat 2, this results in a particularly flat design.
  • the advantage of the arrangement of the pivot axis 8 in the front region is that no or at least only a comparatively small lifting of the seat support leading edge 12 takes place during a pivoting of the seat backrest combination to the rear.
  • the space of the mechanism 10 is better utilized. The available space can optionally be used for other functions of the mechanism 10.
  • due to the asymmetrical arrangement of the pivot axis 8 with respect to a symmetrical arrangement more design options for the design of the chair 100th
  • the position of the pivot axis 8 of the mechanism 10 is defined, for example, by a bolt 16 firmly connected to the seat support 4, which is mounted in two bearings 17 provided on the base support 1.
  • the bearings 17 are offset from the cone seat 2 arranged such that the transverse to the chair longitudinal direction 9 pivot axis 8 seen in the chair longitudinal direction 9 next to the cone seat 2, namely in front of the cone seat 2 is arranged.
  • these spring elements 18, 28 viewed in chair longitudinal direction 9 are arranged asymmetrically to the pivot axis 8. This means that the springs 18, 28 9 have different distances from the pivot axis 8 in the longitudinal direction.
  • At least one seen in the chair longitudinal direction 9 arranged in front of the pivot axis 8 front spring element 18 and at least one arranged in the chair longitudinal direction 9 behind the pivot axis 8 rear spring element 28 is provided, wherein the front spring element 18 exclusively during a pivoting of the seat support 4th forward and the rear spring element 28 is acted upon exclusively by a pivoting of the seat support 4 to the rear of the seat support 4.
  • the rear spring element 28 is used alone, ie exclusively, to adjust the pivoting resistance in a pivoting of the seat support 4 to the rear and for returning the seat support 4 from the rear, ie from the tilted back down position, in the unverschwenkte starting position.
  • the front spring element 18 is used alone, ie exclusively, to define the pivoting resistance in a pivoting of the seat support 4 forward and for returning the Seat support 4 from the front, so from the forward tilted down position, back to the original position.
  • a single spring element 18, 28 may be arranged, which then preferably lies in the central longitudinal plane of the mechanism 10.
  • a plurality of spring elements 18, 28 are provided at the front and / or rear, preferably designed as elements of a single spring assembly whose springs are arranged, for example, right and left of the central longitudinal plane, but at the same distance from the pivot axis 8.
  • the rear spring element 28 is a compression spring, more precisely a helical compression spring.
  • the rear spring element 28 engages on the one hand directly or directly on a contact piece 19 of the seat support 4 and on the other hand on a counterpart 20 movably connected to the seat support 4 to form a rotational degree of freedom and is between these two components 19, 20th biased, wherein the contact piece 19 are formed in the helical spring 28 used in this example as the upper spring plate 31 and the counterpart 20 as a lower spring plate 32.
  • the contact piece 19 can only be embodied as an integrated part of the seat support 4 or as a separate component fixedly connected to the seat support 4.
  • the rear spring 28 engages directly with its upper, in the direction of seat support 4 facing spring end 29, optionally via a suitable Federability- or spring mounting element (not shown) on the seat support 4, while with their lower, pointing towards the base support 1 spring end 30 engages a disposed between the seat support 4 and base support 1 counterpart 20.
  • This counterpart 20 having the lower spring plate 32 or another suitable spring receiving or spring mounting element is hingedly connected to the seat carrier 4 and, when the seat carrier 4 is tilted forward, is moved forward from the seat carrier 4, i.e. upwards. away from the base support 1, taken away.
  • the counterpart 20 is located, for example, with a horizontal transverse pin 21 in a shaped like a bracket, starting from the bottom of the seat support 4 down toward base plate 1 formed receptacle 22 of the seat support 4 to form a rotational degree of freedom.
  • the transverse pin 21 is connected to the lower spring plate 32 via a web extending in spring longitudinal direction 23. Both the bracket 22 and the web 23 with the bolt 21 are located in the interior 24 of the coil spring 28th
  • the counterpart 20 is guided vertically on the base support 1. While the counterpart 20 rests in the unpivoted initial position on the base support 1, see Fig. 2 , And thus causes a stop of the spring 28 to the base support 1, serves a purpose provided vertical guide 25 to the counterpart 20 with the rear spring element 28, taken from the seat support 4 in a pivoting forward and upwards away from the base support 1 is moved, not uncontrollably removed from the base support 1. Instead, the vertical guide ensures 25, that the spring element 28 returns to a return of the seat support 4 in the neutral starting position again in its original position on the base support 1.
  • the counterpart 20 at least partially lifts off the base carrier 1 when the seat carrier 4 is pivoted forward, and / or the spring element 28 bends along its longitudinal axis.
  • the reference to the base plate 1 loses the counterpart 20 but never.
  • the vertical guide 25 can be realized in the simplest case, for example by a tongue and groove combination or the like.
  • a part of the base support 1 executed, extending from the top of the base support 1 in the direction of seat support 4 guide pin 26 in a corresponding opening 27 on the underside or in the interior of the counterpart 20, wherein the guide pin 26 so long and the opening 27 is so deep that the pin 26 does not leave the opening 27 even with a maximum forward pivoted seat support 4, see Fig. 3 ,
  • the rear spring element 28 In the unverschwenkten starting position, the rear spring element 28 is biased and is supported upwards on the seat support 4 from. At the same time the rear spring element 28 pushes the counterpart 20 down to the base support 1. As a result, the seat support 4 is held in its unverschwenkten initial position, in which in the illustrated example, the seat support 4 is arranged substantially horizontally. Taking and leaving this starting position is noticeable to the user.
  • the front spring element 18 which is functionally also designed as a compression spring according to the operation of the rear spring element 28, is not biased.
  • the seat support 4 is in the non-pivoted starting position on the front spring element 18 more or less force-free. In other words, there is no or no significant loading of the front spring element 18 by the seat support 4 in the zero position.
  • the front spring element 18 is preferably made as a solid block of a suitable resilient plastic material, e.g. an elastomer, executed.
  • the front spring 18 is placed so that it acts directly between the base support 1 and seat support 4.
  • the front spring element 18 is compressed in a pivoting of the seat support 4 forward. It is used in a stand up to the user for independent recovery of the seat support 4 in its initial position. According to the embodiment of the spring 18 acts while a defined restoring force.
  • stop elements are preferably arranged in the chair longitudinal direction 9 in front of the front spring element 18 (not shown).
  • the front spring element 18 Upon pivoting of the seat support 4 to the rear, the front spring element 18 has no function.
  • the rear spring element 28 is compressed, wherein the counterpart 20 abuts the base support 1 as an abutment. Again, there is a defined restoring force in the horizontal starting position of the seat support. 1
  • the spring rate 34 of the front spring element 18 may differ from the spring rate 33 of the rear spring element 28, see Fig. 5 , so that when pivoting the seat support 4 forward another pivoting resistance is present and felt by the user of the chair as in a pivoting of the seat support 4 to the rear.
  • the size of the bias voltage 35 of the rear spring element 28 may vary depending on the application.
  • stop elements on the base support 1 and / or seat support 4, said stop elements are preferably arranged in the chair longitudinal direction 9 behind the rear spring element 28 (not shown).

Landscapes

  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
EP18000637.1A 2017-08-05 2018-07-31 Mécanisme basculant Active EP3437519B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017117806.6A DE102017117806A1 (de) 2017-08-05 2017-08-05 Wippmechanik

Publications (2)

Publication Number Publication Date
EP3437519A1 true EP3437519A1 (fr) 2019-02-06
EP3437519B1 EP3437519B1 (fr) 2020-01-29

Family

ID=63113312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18000637.1A Active EP3437519B1 (fr) 2017-08-05 2018-07-31 Mécanisme basculant

Country Status (2)

Country Link
EP (1) EP3437519B1 (fr)
DE (1) DE102017117806A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4154858A1 (fr) * 2021-09-22 2023-03-29 Joka Kapsamer GmbH Siège doté d'une aide à la levage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2022525A1 (de) * 1970-05-08 1971-11-25 Vogel Ignaz Kg Schaukellagerung
WO1988005276A1 (fr) * 1987-01-23 1988-07-28 Peter Opsvik A/S Mecanisme basculant, de preference pour un siege de chaise ou similaire
GB2340746A (en) * 1998-07-27 2000-03-01 Ashfield Eng Co Wexford Ltd Posture-responsive chair
US20070252419A1 (en) * 2004-09-03 2007-11-01 Yukie Takahashi Seating Mechanism and Chair
GB2513153A (en) * 2013-04-17 2014-10-22 Deep Thought Ltd Improvements in office furniture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2022525A1 (de) * 1970-05-08 1971-11-25 Vogel Ignaz Kg Schaukellagerung
WO1988005276A1 (fr) * 1987-01-23 1988-07-28 Peter Opsvik A/S Mecanisme basculant, de preference pour un siege de chaise ou similaire
GB2340746A (en) * 1998-07-27 2000-03-01 Ashfield Eng Co Wexford Ltd Posture-responsive chair
US20070252419A1 (en) * 2004-09-03 2007-11-01 Yukie Takahashi Seating Mechanism and Chair
GB2513153A (en) * 2013-04-17 2014-10-22 Deep Thought Ltd Improvements in office furniture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4154858A1 (fr) * 2021-09-22 2023-03-29 Joka Kapsamer GmbH Siège doté d'une aide à la levage

Also Published As

Publication number Publication date
DE102017117806A1 (de) 2019-02-07
EP3437519B1 (fr) 2020-01-29

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