EP3437520A1 - Mécanisme basculant - Google Patents

Mécanisme basculant Download PDF

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Publication number
EP3437520A1
EP3437520A1 EP18000638.9A EP18000638A EP3437520A1 EP 3437520 A1 EP3437520 A1 EP 3437520A1 EP 18000638 A EP18000638 A EP 18000638A EP 3437520 A1 EP3437520 A1 EP 3437520A1
Authority
EP
European Patent Office
Prior art keywords
spring
support
seat
seat support
chair
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
EP18000638.9A
Other languages
German (de)
English (en)
Other versions
EP3437520B1 (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
Priority to EP19000372.3A priority Critical patent/EP3590389A1/fr
Publication of EP3437520A1 publication Critical patent/EP3437520A1/fr
Application granted granted Critical
Publication of EP3437520B1 publication Critical patent/EP3437520B1/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 about 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 Wippmechanik comprises at least one spring element which cooperates 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 at least one spring element seen in chair longitudinal direction is arranged exclusively on one side of the pivot axis.
  • rocking mechanism Since according to the invention spring elements are provided exclusively on one side of the pivot axis, a small-sized and at the same time constructively comparatively simply constructed rocking mechanism can be provided.
  • 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 one-sided pivoting mechanisms known from the prior art, characterized in that a pivoting (lowering, tilting, rocking or tilting) of the seat support in the manner of a rocker on both sides, ie both backwards and forwards possible is.
  • the proposed tilt mechanism differs by the one-sided arrangement of the spring elements relative to the position of the pivot axis. While in the known bilaterally pivotable rocker mechanisms design-related spring elements must always be provided on both sides of the pivot axis, i. Seen in the chair longitudinal direction in front of and behind the pivot axis, this is not the case with the rocking mechanism according to the invention.
  • the proposed construction allows the use of spring elements exclusively on one side of the pivot axis, without this leading to a reduced functionality of the rocking mechanism.
  • a single spring element or a single spring assembly is sufficient, while in the known pivoting on both sides rocking mechanisms a single spring element is never sufficient, but instead always several, locally separated from each other, clearly spaced spring elements are required to the to achieve the desired rocking function.
  • the two-sided pivoting with only one-sided arrangement of the spring elements is realized in a first preferred embodiment of the invention in a structurally particularly simple manner that a double-acting spring is used, so a claimable both train and pressure or resilient spring.
  • this is accomplished by arranging a spring in a spring retainer moved with the seat support having a plurality of mutually movable parts, at least part of the spring retainer cooperating with the base support.
  • the in Fig. 1 illustrated conference chair 100 has a rocking mechanism 10, wherein the rocking mechanism 10 with respect to their Central longitudinal plane, which concerns the actual kinematics, is mirror-symmetrical. 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.
  • the entire seat 6 together with the backrest 7 relative to the fixed to the chair column 3 base support 1 forward and backward be pivoted.
  • 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.
  • FIGS. 2 and 3 a starting position in which the seat support 4 assumes a substantially horizontal position.
  • Fig. 4 shows a rocking mechanism 10 in a maximum forward pivoted position
  • Fig. 5 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.
  • 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.
  • the height of the tilt mechanism 10 can be kept low. In comparison to such Wippmechaniken in which the pivot axis 8 is provided directly above 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.
  • the spring elements 18, 28 thus located next to the cone seat 2, preferably behind the cone seat. 2
  • Wippmechanik 10 a first embodiment of the invention Wippmechanik 10 will be described in more detail.
  • the spring element 18 or, in the case of the number of spring elements 18 which are supported with their spring ends on the base support 1 and on the seat support 4 are double-acting, that is to say both tensile and compressive Springs 18, see Fig. 2 , These have a spring end shape adapted to the application. It has proven to be particularly advantageous when the spring element 18 is connected with its spring ends 19 via screwed-in spring receiving elements 20 to the base support 1 and / or the seat support 4. These screwed-in mounting elements (eg in the form of threaded plugs) may be separate components or components integrated into the base carrier 1 or the seat carrier 4.
  • screwed spring ends 19 and springs 18 can be used with rolled mounting elements for mounting to base support 1 and seat support 4.
  • screwed or rolled spring ends 19 not all turns of the spring 18 are resilient; accordingly, the total number of turns must be adjusted.
  • This embodiment of the invention is characterized by a particularly simple structure, since only a single spring element 18, which is arranged between the seat support 4 and base support 1 in the central longitudinal plane of the mechanism 10 is necessary, or a single spring assembly whose springs, for example, right and left of the central longitudinal plane, but at the same distance from the pivot axis 8, are arranged.
  • the pivoting forward or backward is limited either by the spring 18 itself, for example, because their maximum elongation or compression is reached or the spring rate is chosen such that additional mechanical stops are not required; or the tilting or tilting movement of the seat support 4 or the seat carrier backrest support combination is effected by additional mechanical stops 23, 24 on seat support 4 and / or base support 1.
  • the double-acting spring 18 is preferably a double-acting helical spring, more specifically a cylindrical helical spring which can be subjected to tension and compression. It is a spring 18 with non-adjacent turns. In other words, the pitch of the spring must be so large that adjacent turns (viewed from the side) have a suitable minimum distance 21 from one another to provide the desired functionality.
  • the spring rate 22 of the spring 18 and the spring assembly is the same at train and pressure, so that both at a Pivoting the seat support 4 forward and at a pivoting of the seat support 4 to the rear always the same pivoting resistance is present and noticeable to the user of the chair 100, see Fig. 6 , But it is also possible to use a spring element 18, in which the spring rate differs in a tensile load from the spring rate at a pressure load.
  • coil springs 18 shown herein other suitable, i. double-acting spring elements are used, for example, solid blocks of elastic plastic material, which are fastened via suitable connections to seat support and base support or placed between them.
  • Wippmechanik 10 a second embodiment of the invention Wippmechanik 10 will be described in more detail.
  • the at least one spring element 28 in a pivotally mounted on the seat support 4 and thus mitbewegten with the seat support 4, the spring 28 embracing spring mount 25 (spring holding and spring receiving device) placed, see Fig. 3 ,
  • This spring receptacle 25 has a plurality of mutually movable parts 26, 27, wherein at least one (outer) part 26 of the spring seat 25 cooperates with the base support 1.
  • the spring element 28 is supported with its two ends 29, 30 in the spring seat 25, namely on different parts of the spring seat 25, which are those parts 26, 27 of the spring seat 25, which are movable relative to each other. By a movement of these parts 26, 27 to each other, the spring 28 is acted upon. In the version shown here acts it is at the spring 28 to a compression spring, more precisely a helical compression spring.
  • the spring ends 29, 30 act on spring plates 31, 32 (or other suitable components), which are designed as components of the respective spring receiving parts 26, 27 and which are not directly connected to the seat support 4 with the base support 1.
  • the spring 28 presses with its upper, facing the seat support 4 end 29 against the one part 26 of the spring retainer 25, while at the same time presses with its lower, facing base plate 1 end 30 against the other part 27 of the spring retainer 25.
  • the two parts 26, 27 of the spring seat 25 are connected to each other exclusively via the spring 28 and coupled.
  • both spring plates 31, 32 are movable, namely in the direction of the base support 1 or seat support 4 to and from the base support 1 or seat support 4 away, i. their position in the space between base support 1 and seat support 4 is changeable.
  • both the movement of the spring receiving parts 26, 27 to each other and the movement of the spring retainer 25 relative to the base support 1 by stops 34, 35 are limited.
  • the base support 1 lower spring end 30 receiving, from the lower end 30 of the spring 28 in the direction of the base support 1 acted upon lower spring plate 32 and that (inner) spring receiving part 27, which includes this lower spring plate 32, to form a first stop 34 against a movable movable part 36 of the seat support 4, see Fig. 3 and 4 , whereby a stationary first stop 34 is formed.
  • This first stop 34 prevents a (further) change in position of the lower spring end 30 in the direction of the base support 1.
  • this part 36 of the seat support 4 in its function as a driver of the lower spring plate 32 at the same time be regarded as part of the spring seat 25.
  • the lower spring plate 32 or spring receiving part 27 comprising this spring plate 32 is connected to a plunger 37 which points in the direction of the seat support 4 and strikes the driver 36 in order to realize the first stop 34.
  • the driver 36 which can also be regarded as part of the seat support 4, is articulated, namely mounted pivotably about a transverse axis 33 on the seat support, connected to the seat support 4 such that it always hangs vertically downwards in the direction of the base support 1.
  • This first stop 34 prevents (further) movement of the plunger 37 and thus of the lower spring plate 32 down in the direction of the base support 1 and thus at the same time a movement of the driver 36 down.
  • the plunger 37 connected to the lower spring plate 32 protrudes upward into the driver 36, the plunger 37 having a stop surface 38 pointing downwards in the direction of the base support 1, against which an upwardly directed seat support 4 Stop surface 39 of the driver 36 abuts.
  • spring retainer 25 and base support 1 under training defined stops 34, 35 abut each other.
  • the seat support 4 upper spring end 29 receiving, acted upon by the upper end 29 of the spring 28 in the direction of seat support 4 upper spring plate 31 and that (outer) spring receiving part 26 which includes these upper spring plate 31, to form a second stop 35 against a stationary, so fixed and immovable part 41 of the base support 1, whereby a stationary second stop 35 is formed.
  • This second stop 35 prevents a (further) change in position of the upper spring end 29 in the direction of the seat support 4.
  • the stop element 41 embodied as part of the base support 1 or firmly connected to the base support 1 protrudes upward from the upper side of the base support 1 and has a stop surface 42 facing downwards in the direction of the base support 1. Against this proposes an upward in the direction of the seat support 4 facing stop surface 43 of the upper spring plate 31 and the corresponding spring receiving part 26th
  • the at least one spring element 28 is biased here.
  • the bias of the at least one spring element 28 is provided such that in the non-pivoted state of the seat support 4 both stops 34, 35 are effected simultaneously and thereby a zero position (initial position) is defined, see Fig. 3 from which the seat support 4 can be pivoted or tilted. To leave this defined zero position, force must be applied against the spring 28.
  • the user of chair 100 therefore feels both ingesting and exiting Initial position, which is predetermined by the construction described as a neutral rest position.
  • the seat support 4 When pivoting the seat support 4 forward, so tilting the front edge 12 of the seat support 4 about the pivot axis 8 down toward base support 1, the seat support 4 removes the lower spring plate 32 of the base support 1, wherein the upper spring plate 31 and thus the second stop 35 of the spring seat 25 on the base support 1 serves as an abutment for the application of the spring element 28.
  • the seat support 4 pulls over the driver 36 and thus the first stop 34, the plunger 37 with the lower spring plate 32 against the force of the spring 28 upwards.
  • the spring element 28 is acted upon and leaves the neutral equilibrium position. As a result, the spring 28 is compressed against the upper spring plate 31, see Fig. 4 ,
  • both stops 34, 35 are effected simultaneously, so in addition to the ortsunver selectedlichen second stop 35 and the first stop 34 which is moved with its two stop surfaces 38, 39 in this case in the direction of seat support 4 and the lower spring plate 32nd entraining.
  • the seat support 4 Upon pivoting of the seat support 4 to the rear, so tilting the rear edge 13 of the seat support 4 about the pivot axis 8 down towards the base support 1, the seat support 4 presses the upper spring plate 31 and the upper spring plate 31 having spring receiving part 26 in the direction Base carrier 1, so that both stops 34, 35 are dissolved.
  • the loading of the spring receiving part 26 takes place in the example illustrated here with the aid of a mounted on the seat support 4, protruding from the underside of the seat support 4 in the direction of the base support 2 pusher element 44.
  • the Pusher 44 be designed as an integrated part of the seat support 4 or as a separate, connected to the seat support 4 component.
  • Both the pusher member 44 and the spring receiving member 26 have for the purpose of pressing down complementary, curved contact surfaces 54, 56 which are designed such that a secure mechanical contact is ensured during the entire process of pivoting backwards.
  • a limitation of the tilting or tilting movement of the seat support 4 and the seat carrier backrest support combination is here also preferably effected by additional mechanical stops 23, 24 on seat support 4 and / or base support 1 (only in Fig. 3 shown).
  • the spring rate 47 of the spring 28 and the spring assembly is always the same, since the spring 28 is always claimed only on pressure. Therefore, both in a pivoting of the seat support 4 forward as well as in a pivoting of the seat support 4 to the rear always the same pivoting resistance is present and noticeable to the user of the chair 100, see Fig. 7 ,
  • the size of the bias 48 may vary depending on the application.
  • other suitable spring elements 28 can also be used in this exemplary embodiment, as long as they define a suitable pivoting resistance and are suitable for returning the seat carrier 4 from the pivoted position to the starting position.
  • both embodiments have in common is u.a. Also, the always vertical arrangement of the spring 18, 28 between the base support 1 and seat support 4, regardless of the inclination or the pivot angle of the seat support 4. In other words, the spring longitudinal axis of the coil springs used 18, 28 is always perpendicular to the base support 1 and perpendicular to horizontal.

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  • Chairs Characterized By Structure (AREA)
EP18000638.9A 2017-08-05 2018-07-31 Mécanisme basculant Active EP3437520B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19000372.3A EP3590389A1 (fr) 2017-08-05 2018-07-31 Mécanisme basculant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017117803.1A DE102017117803A1 (de) 2017-08-05 2017-08-05 Wippmechanik

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP19000372.3A Division-Into EP3590389A1 (fr) 2017-08-05 2018-07-31 Mécanisme basculant
EP19000372.3A Division EP3590389A1 (fr) 2017-08-05 2018-07-31 Mécanisme basculant

Publications (2)

Publication Number Publication Date
EP3437520A1 true EP3437520A1 (fr) 2019-02-06
EP3437520B1 EP3437520B1 (fr) 2021-01-27

Family

ID=63113313

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19000372.3A Pending EP3590389A1 (fr) 2017-08-05 2018-07-31 Mécanisme basculant
EP18000638.9A Active EP3437520B1 (fr) 2017-08-05 2018-07-31 Mécanisme basculant

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19000372.3A Pending EP3590389A1 (fr) 2017-08-05 2018-07-31 Mécanisme basculant

Country Status (2)

Country Link
EP (2) EP3590389A1 (fr)
DE (1) DE102017117803A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022113759B3 (de) 2022-05-31 2023-10-05 Elsa Domaß Schwingstuhl

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125284A (en) * 1982-08-16 1984-03-07 Metalstand Co Adjustable chairs
WO1988005276A1 (fr) * 1987-01-23 1988-07-28 Peter Opsvik A/S Mecanisme basculant, de preference pour un siege de chaise ou similaire
EP0281749A1 (fr) * 1987-02-10 1988-09-14 Karl Zünd & Co. AG. Chaise, notamment chaise de travail

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3638273A1 (de) * 1986-10-13 1988-04-21 Thonet Geb Gmbh Sitzmoebel
DE4238276A1 (de) * 1992-11-13 1994-05-19 Oskar Winkler Gmbh & Co Kg For Sitzmöbel, insbesondere Schreibtischstuhl
KR101313685B1 (ko) * 2011-02-10 2013-10-02 양희정 좌판의 탄성을 이용한 뇌활성화 기능성 의자

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125284A (en) * 1982-08-16 1984-03-07 Metalstand Co Adjustable chairs
WO1988005276A1 (fr) * 1987-01-23 1988-07-28 Peter Opsvik A/S Mecanisme basculant, de preference pour un siege de chaise ou similaire
EP0281749A1 (fr) * 1987-02-10 1988-09-14 Karl Zünd & Co. AG. Chaise, notamment chaise de travail

Also Published As

Publication number Publication date
EP3437520B1 (fr) 2021-01-27
DE102017117803A1 (de) 2019-02-07
EP3590389A1 (fr) 2020-01-08

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