EP3100642B1 - Mecanisme pour une chaise comprenant un mecanisme synchrone ; procede de reglage de poids pour un meilleur confort d'assise dynamique de l'utilisateur au moyen d'un mecanisme pour une chaise comprenant un mecanisme synchrone - Google Patents

Mecanisme pour une chaise comprenant un mecanisme synchrone ; procede de reglage de poids pour un meilleur confort d'assise dynamique de l'utilisateur au moyen d'un mecanisme pour une chaise comprenant un mecanisme synchrone Download PDF

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Publication number
EP3100642B1
EP3100642B1 EP16001223.3A EP16001223A EP3100642B1 EP 3100642 B1 EP3100642 B1 EP 3100642B1 EP 16001223 A EP16001223 A EP 16001223A EP 3100642 B1 EP3100642 B1 EP 3100642B1
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EP
European Patent Office
Prior art keywords
storage unit
chair
bearing
energy storage
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.)
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Application number
EP16001223.3A
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German (de)
English (en)
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EP3100642A1 (fr
Inventor
Dietmar Fissl
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.)
Konig and Neurath AG Bueromobel-Systeme
Original Assignee
Konig and Neurath AG Bueromobel-Systeme
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Publication of EP3100642A1 publication Critical patent/EP3100642A1/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
    • 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

Definitions

  • the invention relates to a mechanism for a chair with a synchronizing mechanism according to claim 1 and a method for weight adjustment by means of a mechanism for a chair with a synchronizing mechanism according to claim 9.
  • Mechanisms for chairs with a synchronous mechanism and method for weight adjustment by means of a mechanism for chairs with a synchronous mechanism, in particular work or office chairs, have long been state of the art.
  • the mechanisms allow the seat occupant to adjust and adjust the characteristics of the energy storage device within certain limits to their respective weight.
  • the setting of the biasing force and thus the adjustment of the characteristic of the energy storage is often done by means of a stiff adjustment.
  • a seat or an office chair is provided with a synchronous mechanism under protection, wherein in the rear region of the seat support is connected to the base support in several points via a coupling lever and the coupling lever is forcibly guided by the back rocker in the bearing point. Leaning the seat occupant to the rear of the coupling lever is deflected by the back rocker in the bearing point so that the seat support of the back is tracked and tends to tilt.
  • the spring element is supported on the base support and acts on the spine in a pivot point with a restoring force, via a spiral eccentric, the position of the pivot point can be changed to a pivot point, whereby the adjustability of the restoring force of the spring element is made possible.
  • the disadvantage of this is that the adjustability of the restoring force and thus the adjustment of the biasing force of the spring element can be achieved only to a small extent with simultaneous high force by means of the adjustment.
  • a chair with a quickly adjustable energy storage is in the published patent application DE 103 02 208 A1 described in which on a seat part, a pivotable backrest support is arranged, which is biased with a manually adjustable biasing force of an energy storage device against the back of the user.
  • the front end of the force accumulator is rotatably mounted on a free, pivotable end of a seat edge near the handlebar, and the rear end of the force accumulator is hinged to a free, pivotable end of the backrest support, this point is adjustable and lockable.
  • the disadvantage of this is that the adjustability of the biasing force of the spring element can be achieved only by a high expenditure of force.
  • the invention is therefore an object of the invention to develop a mechanism for a chair with a synchronous mechanism and a method for weight adjustment by means of a mechanism for a chair with a synchronous mechanism, wherein the mechanism allows a seat occupant to make the weight setting almost free of force, without the biasing force of a Force accumulator and thus to change the restoring force for the synchronous mechanism, with an improved progression of the power storage unit is achieved for a dynamic pivoting operation.
  • the object is achieved by a mechanism for a chair with a synchronous mechanism and a method for weight adjustment by means of a mechanism for a chair with a synchronizing mechanism according to the claims 1 and 9.
  • the mechanism according to the invention has the advantage that the mechanism has a wishbone and the power storage unit is connected to the wishbone.
  • the mechanism according to the invention thus has the advantage that, as a result of this arrangement of wishbone and force accumulator unit, the resulting transmission effects progressive loading of the force accumulator of the force accumulator unit by means of the spindle integrated in the wishbone.
  • the bias of the energy storage is not changed for weight adjustment to a specific body weight of a seat occupant, but forces a restoring force of the synchronous mechanism is adjusted by means of a change in an operating angle of an energy storage on the wishbone to a different body weight of a seat occupant.
  • the mechanism according to the invention has a connector which is arranged on the backrest support.
  • a connector is a connection between the wishbone and made the backrest support, which achieves an improved dynamic sitting feeling for a seat occupant, as this connection of connector and wishbone another rotation axis of the wishbone is generated.
  • the connector is designed as an integral part of the backrest support, whereby further stability is obtained and a saving of components and thus a minimization of the manufacturing effort is achieved.
  • the mechanism according to the invention has a bearing lever which is rotatably arranged about an axis of the bearing block. The advantage of this is that a further increase in the progression of the energy accumulator is achieved by an improved lever ratio by the change in position of the bearing lever from the rear basic position to a front position.
  • the force storage unit is connected by means of a connecting means with the wishbone.
  • the connecting means allows the designer a much simpler and possibly space-saving connection of the power storage unit to the wishbone.
  • the wishbone is rotatable about a horizontal axis of the connector and about a horizontal axis of the bearing lever. The advantage of this is that an improved progression of the force storage unit is achieved by the simultaneous rotational movement of the wishbone about two axes, since a better lever can be achieved on the force storage unit.
  • the mechanism has an adjustable via an adjustment gearbox.
  • the advantage of this is that the gear can be easily and conveniently adjusted by a seat occupant by the adjustment, in particular a handle.
  • the transmission is arranged on the wishbone.
  • the advantage of this is that the space required for installation in the chair is minimized by this design.
  • the transmission has a spindle.
  • the advantage of the spindle is that transmits a rotary movement of the adjusting device to the transmission through the spindle belonging to the transmission, wherein the spindle belonging to the transmission converts the rotational movement of the adjusting device, in particular a handle, into a translatory movement and thereby the position of the first Anlenkddlings of the connecting means in the slot of the wishbone changed.
  • a small rotational movement of the adjusting device is thus a large translational movement of the pivot point achievable.
  • the spindle pitch must be at least so high that the spindle inhibits itself when loaded due to the friction itself.
  • the mechanism according to the invention acts on the connecting means, the spindle of the transmission, so that a first point of articulation of the power storage unit is adjustable in position.
  • An advantage of the mechanism is that the first articulation point of the force storage unit can be adjusted quickly, smoothly and trouble-free and above all force-free by means of the adjusting device via a spindle belonging to the transmission, so that the effective angle of the force accumulator of the force storage unit with respect to the Wishbone and thus the force acting on the synchronizing mechanism restoring force changes, which allows the seat occupant optimally adapted to his weight dynamic sitting.
  • the first articulation point of the force storage unit is displaced at an angle to the line of action.
  • the first articulation point (31) of the force storage unit (2) is displaced perpendicular to its action line (61).
  • the advantage of this is that by the vertical displacement of the power storage unit, in particular of the energy storage, a powerless displacement of the power storage unit by the spindle of the transmission by the seat occupant or electronics or the like.
  • the energy storage unit has a spring, a spring, namely a coil spring, on.
  • the advantage of a spring, namely a helical spring is that the spring characteristic can be formed by variable wire diameter, variable pitch, or varying spring diameter (frusto-conical helical spring) regions, thereby providing great flexibility with respect to the force storage unit of the force storage unit.
  • progressive springs are used, d. H. As the load increases, the spring hardens to prevent strike-through under heavy loads.
  • the inventive method for weight adjustment by means of a mechanism for a chair with a synchronous mechanism has the advantage that the mechanism comprises a wishbone and the power storage unit is connected to the wishbone, wherein in a position A of the backrest support by means of the adjusting device, a first articulation point of the force storage unit is adjusted in position and at the earliest thereafter a pivoting movement is carried out in a second position B of the backrest carrier.
  • the advantage of the method according to the invention is that the restoring force of the synchronous mechanism of the chair, in particular a work or office chair, by the seat occupant quickly, smoothly, trouble-free and force-free can be adjusted and adjusted and thereby the seat occupant an optimally adapted to his weight dynamic sitting can be made possible. Furthermore, it is achieved by the powerless adjustment of the line of action of the force storage unit, in particular the force accumulator, without changing the bias of the energy storage, that the transmission causes a progressive load of the energy storage means integrated in the wishbone spindle.
  • an additional advantageous embodiment of the method according to the invention leads in the pivoting movement in the second position B of the backrest support the wishbone simultaneously a first rotational movement about a horizontal axis of a connector according to dashed arrow and a second rotational movement about a horizontal axis of a bearing lever according to dashed arrow.
  • the mechanism) for a chair with a synchronizing mechanism is a mechanism according to one of claims 1 to 8.
  • FIG. 1 is a perspective view of one embodiment of a chair mechanism 1, in particular a work or office chair, having a synchronizing mechanism by which a seat bottom structure is moved to a seat back structure in synchronized relation to each other, by the mechanism a reset force of the synchronizer mechanism modification a line of action of an energy storage unit 2, in particular an energy accumulator is set to a different body weight of a seat occupant, shown from above.
  • the not fully illustrated backrest structure has, inter alia, a backrest support 3 and a holder 4 for a backrest, not shown.
  • the backrest support 3 is arranged about a horizontal axis 6 of the bearing block 5, a main pivot bearing 7, rotatably mounted on the bearing block 5.
  • the seat structure has a seat support 8 and a padding, not shown.
  • the seat support 8 is connected in its front region via at least one translational bearing with the bearing block 5 and in its rear region via at least one support 9 with at least one connector 10, in the exemplary embodiment two connectors 10.
  • the mechanism 1 has an adjusting device 11 for changing the inclination angle of the energy storage unit 2 and an adjusting device 12 for adjusting the inclination angle of the seat support 8.
  • a height adjustment 13, a seat depth adjustment 14 and an opening angle limit 15 allow the adjustment of the chair or the seat surface structure with respect to the aforementioned parameters via a not shown in the seat support 8 train system.
  • Fig. 2 shows a perspective view of the mechanism 1 according to the invention, also referred to as non-rotating gear, from Fig. 1 for a chair, wherein for reasons of improved presentation and visibility, the holder 4 for a backrest, not shown, and one half of the backrest support 3 are not shown.
  • the backrest support 3 is rotatably mounted on the bearing block 5 about a horizontal axis 6 of the bearing block 5, the main rotary bearing 7, not shown.
  • the seat support 8 is guided by means of two translational bearings 16, such a bearing 16 having a seat carrier guide 17 and a seat carrier bearing 18.
  • the mechanism 1 according to the invention is arranged above a bearing block 5 and below the seat support 8.
  • the mechanism 1 has at least one backrest support 3, at least a connector 10, at least one main pivot bearing 7, at least one bearing lever 19 which is rotatably disposed about a horizontal axis 20 of the bearing block 5, and a wishbone 21. Furthermore, in Fig. 2 the connection of the seat support 8 on the carrier 9 to the connectors 10 via a horizontal and vertical spring-guided connection means 22 shown.
  • the adjusting device 12 allows the setting of the inclination angle of the seat support 8 via a gear 23.
  • Fig. 3 a perspective view of the mechanism 1 according to the invention is shown, wherein different in the FIGS. 1 and 2 shown construction elements are not shown.
  • the wishbone 21 which is rotatable about a horizontal axis 24 of a bore 25 of the at least one connector 10 and about a horizontal axis 26 of the bore 27 of the at least one bearing lever 19 is shown.
  • the force storage unit 2 with a power storage, not shown, in particular a spring, in particular a coil spring, a first guide member 28 and a second guide member 29, wherein the second guide member 29 of the force storage unit 2 is connected by means of a connecting means 30 with the wishbone 21.
  • the connecting means 30 thus forms a first articulation point 31 of the second guide element of the power storage unit 2 to the wishbone 21.
  • the wishbone 21 also has a gear 32 with a spindle, whereby the connecting means 30 can be moved in a slot 33 of the wishbone 21 in its position ,
  • This transmission 32 is operated by means of the adjusting device 11, not shown.
  • a second articulation point 34 of the first guide element 28 of the energy storage unit 2 is arranged in the front region of the bearing block 5. Around this second pivot point 34, the first guide member 28 is rotatably arranged stationary.
  • the two guide elements 28 and 29 of the energy storage unit 2 are arranged displaceably to one another, wherein the first guide element 28 is guided in the embodiment within the second guide member 29 and between the two guide elements 28 and 29, not shown force storage, in particular a coil spring is positioned.
  • the two guide elements 28 and 29 may each consist of a plurality of individual interconnected parts.
  • the backrest support 3 is fixedly arranged about a horizontal axis 6 of the bearing block 5 rotatably mounted on the main pivot bearing 7.
  • the seat support 8 is guided via a translatory bearing 16, which has a seat carrier guide 17 and a seat carrier bearing 18. Furthermore, the seat carrier 8 is connected to the mechanism 1 via a transmission 23 which can be adjusted by a second adjustment device 12 by means of a connection means 22 which is displaceably guided in an arcuate slot 35 of the at least one connector 10. About a displacement of the connecting means 22 in a circular arcuate slot 35 of the connector 10, it is possible to change the inclination angle of the seat surface structure, not shown.
  • the connecting means 22 is connected to the connector 10 via a sprung construction.
  • FIG. 4 is a perspective view of a wishbone 21 for a mechanism 1 according to the invention, also referred to as non-rotating gear, shown a chair.
  • the wishbone 21 is modeled approximately in the shape of a triangle, wherein the two halves 36 and 37 of the wishbone 21 each have two holes 38 and 39 for screwing the two component halves 36 and 37, each bearing bearing 40 with a horizontal axis 41 of a bore 42 for Connection with a bearing lever 19, not shown here, in each case a connector bearing 43 with a horizontal axis 44 of a bore 45 for connection to a connector 10, not shown here, in each case a slot 46 for guiding the connecting means 30, not shown between the wishbone 21 and the power storage unit 2 and a Stop 47 have to limit a pivoting movement against a bearing lever 19, not shown.
  • FIG. 5 A perspective view of the in Fig. 4 shown for a mechanism 1 of a chair with a gear 32 which is disposed between the two component halves 36 and 37, is shown in FIG Fig. 5 shown.
  • the gear 32 has perpendicular to a horizontal axis 44 of the connector bearing 43, a gear 48, which is driven by the adjusting device 11, not shown here, which is also located on the horizontal axis 44.
  • the transmission 32 perpendicular to the gear 48, a further gear 49 between the two component halves 36 and 37, which is driven by the gear 48 and which itself over a connecting means 50 drives a spindle 51.
  • the arrangement of the gear 32, a rotational movement of the adjusting device 11 is converted into a translational movement of the spindle 51.
  • the spindle 51 is in turn connected to a component 52 which guides the connecting means 30 in the slot 46 of the wishbone 21.
  • the pitch of the spindle 51 is designed in such a way that the spindle 51 under load eg. By a seat occupant by your own friction of the flanks inhibits itself.
  • the spindle pitch is about two, with other spindle pitches are conceivable. It is important, however, that the spindle pitch is always so large that a self-locking is guaranteed.
  • FIG Fig. 6 A perspective view of a connector 10 of the mechanism 1 according to the invention is shown in FIG Fig. 6 shown.
  • the connector 10 has in the exemplary embodiment, a T-shaped connector 53 having at least one bore, which serve the screw with a backrest support 3, not shown here.
  • connection options such as, for example, a connector or the like.
  • the connector 10 can be easily connected to the backrest support 3. It is possible to design the backrest support 3 in such a way that the connector 10 forms an integral part of the backrest support.
  • the connector 10 has a bore 25 on a horizontal axis 24 for connection to the wishbone 21.
  • the connector 10 is thus seated on a connector bearing 42, not shown, of the wishbone 21.
  • the connector 10 has a circular arc-shaped slot 35, which is arranged at a certain opening angle about the horizontal axis 24 of the bore 25 for connection to the wishbone 21.
  • the arcuate slot 35 may also be designed as a simple bore. In such a constructive design, however, is an adjustment the inclination of the seat support 8 not possible.
  • a bore 54 is used for attachment, for. B. in the form of a screw, a sprung construction with the seat support 8, not shown here.
  • Fig. 7 shows a bearing lever 19 of the mechanism 1 according to the invention in a perspective view.
  • the bearing lever 19 has two holes 20 and 47, which serve for a connection of the bearing lever 19 to a wishbone 21 and on the other for connection to a bearing block 5.
  • Fig. 8 is a perspective view of the seat support 8 for the mechanism 1 according to the invention, also referred to as non-rotating gear, for a chair, in particular a work or office chair shown.
  • the seat carrier 8 has at least one seat carrier guide 17 for the translatory movement of the seat carrier 8 and at least one carrier 9 to a connector 10, not shown, holes 56 in the at least one carrier 9 lead the gear 23 not shown here and a force storage structure, also not shown here, In particular, a spring construction, a bore 54, not shown, of the connector 10 with the carrier 9 at least partially connect.
  • the seat support 8 has at least one device 57 for connecting the seat support 8 with a seat surface structure, not shown.
  • FIG Fig. 9 A perspective view of one half of a backrest support 3 is shown in FIG Fig. 9 shown.
  • the second symmetric half is mirrored at plane 58, as in FIG Fig. 1 shown.
  • This has in its rear region a holder 4 for a backrest, not shown, in its central region a connecting device 59 for receiving the connector 10, in particular a means of a screw, here with a T-shaped profile, and in its front region a main rotary bearing. 7 which is rotatable about a horizontal axis 6 of the bearing block 5, on.
  • Fig. 10 shows a perspective view of an energy storage unit 2, wherein the force storage unit 2 consists of a power storage, not shown, a first guide member 28 and a second guide member 29.
  • the guide elements 28 and 29 can consist of several parts.
  • the front first guide element 28 is guided in the second rear guide element 29, wherein between the two guide elements 28 and 29, a force accumulator, for example a spring, in particular a coil spring, is arranged.
  • the power storage unit 2 is connected via the second guide element 29 composed of two parts 29a and 29b by means of the connecting means 30, in this case a bolt, to the wishbone 21 (not illustrated here).
  • the first guide member 28 by means of a connecting means 60, in particular a bolt, rotatably arranged stationary.
  • FIG. 11 is a plan view of the mechanism 1 of a chair, in particular a work and office chair, with a sectional plane AA, which is arranged centered in the longitudinal direction of the chair shown.
  • the top view shows the seat support 8, on which the seat surface structure, not shown, can be arranged, the bearing block 5 with the second articulation point 34 fixed rotatably mounted power storage unit 2 and the main turning 7, in which the backrest support 3 rotatable about the horizontal axis 6 of the bearing block. 5 is arranged, wherein the backrest support 3 is in a first position A (working position).
  • Fig. 12 shows the section AA by the mechanism 1 according to the invention, also referred to as non-rotating gear, a chair Fig. 11 , wherein the chair is in a first position A (working position), ie the backrest support 3 has undergone no pivotal movement.
  • position A working position
  • the seat support 8 is on the one hand via the translational bearing 16, not shown, with a seat support guide 17 and a seat support bearing 18, with the bearing block 5 and the other on the at least one support 9 with the connector 10 for adjusting the inclination angle of the seat support 8 with a not shown gear 23 connected sprung.
  • the seat support 8 is in a horizontal position A (working position).
  • the stationary in the second pivot point 34 rotatably mounted first guide member 28 of the force storage unit 2 is in the second Guided guide member 29, wherein the second guide member 29 is connected by means of the connecting means 30 with the wishbone 21.
  • the connecting means 30, in particular a bolt, is guided in a slot 46 of the wishbone 21 and forms the first pivot point 31, not shown.
  • the transmission 32 is actuated, which by means of the spindle 51 at an angle, but in particular perpendicular , acts on the connecting means 30 to their action line, so that the angle of the force accumulator of the force storage unit 2 can be adjusted within the predetermined positions C and D, but without changing the biasing force of the force accumulator, in particular a coil spring.
  • Positions C and D describe the end positions of the stepless weight adjustment.
  • the position C is the setting for the minimum adjustable body weight of a seat occupant and the position D is the setting for the maximum adjustable body weight of a seat occupant.
  • the length of the slot 46 is responsible for a maximum possible spreading of the body weight of the weight adjustment, wherein the magnitude of the load can be adjusted and changed by the body weight of a seat user means of the energy storage of the force storage unit 2.
  • FIG. 13 A side view of the inventive mechanism 1 of a chair, in particular a work and office chair, with a vertical sectional plane BB is in Fig. 13 shown.
  • the vertically arranged cutting plane BB intersects the mechanism 1 in the slot 46 of the wishbone 21.
  • An operating angle of the force storage unit 2 is thus changed by the spindle 51, not shown here angle, but in particular perpendicular, in the zero position (position A) of the chair.
  • Fig. 14 shows the in Fig. 13 illustrated section BB of the mechanism 1 according to the invention, also referred to as non-rotating gear, a chair, especially a work or office chair, the section BB extends through the slot 46 of the wishbone 21, in position A of the backrest support 8.
  • the position of the not shown Lug 30 in the slot 46 of the wishbone 21 can both in position C (for lighter persons) or in position D (for heavy people).
  • the positions C and D in this case form the end positions of the stepless weight adjustment.
  • Position C is suitable for setting the minimum adjustable body weight of a seat occupant and position D for setting the maximum adjustable body weight of a seat occupant.
  • the not shown first articulation point 31 of the not shown force storage unit 2 changes from position C to position D and thus by a maximum length E.
  • the length E as already mentioned above, the maximum possible spread of the body weight of the weight adjustment can be influenced, with a small length E a small spread (80 kg to 100 kg) and a large length E a large spread (50 kg to 120 kg) with the same power storage unit, especially for the same power storage means.
  • FIG. 15 A plan view of an embodiment of the inventive mechanism 1 of a chair, in particular a work or office chair, with the sectional planes EE, FF and GG is in Fig. 15 shown.
  • FIG. 15 shows Fig. 15 the bearing block 5 with the translatory bearing 16, the backrest support 3, the adjusting device 11 for operating the transmission 32 and a further adjusting device 12 for tilt adjustment of a seat surface structure, not shown.
  • the gear 23 is shown for adjusting the inclination of the seat surface structure.
  • Fig. 16 puts the in Fig. 15 shown section EE by the mechanism 1 according to the invention, which is also referred to as non-rotating gear, wherein the section EE, the wall of the bearing block 5 cuts freely.
  • the power storage unit 2 is rotatably arranged in the second articulation point 34 by means of the first guide member 28 and connected via the second guide member 29 of the power storage unit 2 by means of the connecting means 30 in the first articulation point 31, not shown, with the wishbone 21.
  • the rotatable about the horizontal axis 20 of the bearing block 5 arranged bearing lever 19 is in a rear basic position.
  • the power storage unit 2 is in position D, which is effected by a far extended spindle 51, and thus in the lowermost position of the slot 46 on the wishbone 21 (weight adjustment for heavier persons).
  • An unillustrated seat support 8 is in a horizontal position and the backrest support 3 is in a position A (working position).
  • a section FF by the mechanism 1 according to the invention Fig. 17 The cutting plane FF cuts the in Fig. 15 illustrated drawing in such a way that a first bearing lever 19 and the wall of the bearing block 5 are not shown.
  • a second bearing lever 19 is shown which is arranged on another side of the wishbone 21.
  • a bore 42 of the wishbone 21, on which the bearing lever 19, not shown, is rotatably mounted on the bearing lever bearing 40.
  • a horizontal axis 24 is visible, which establishes the connection between the connector 10 and the wishbone 21.
  • the connector 10 has a circular arc-shaped slot 35, in which a further connecting means 22, in particular a bolt, is guided, which is connected to the seat support 8, not shown, via a, in particular sprung, construction.
  • Fig. 18 shows the central section GG by the embodiment of the mechanism 1 according to the invention, which is also referred to as a non-rotating gear from Fig. 15 ,
  • the force storage unit 2 directly to the wishbone 21.
  • the spindle 51 which acts on the line of action 61 of the force storage unit 2 is shown.
  • the first guide element 28 of the energy storage unit 2 is fixedly rotatable about the second articulation point 34.
  • the support 9 of the seat support 8, not shown is connected to the connector 10 via a spring-loaded construction, not shown, as well as in FIG Fig. 16 shown.
  • Fig. 19 is a bottom view of the inventive mechanism 1 of a chair, in particular a work or office chair, shown.
  • the bearing block 5 with rotatably and pivotally arranged backrest support 3 and the seat support 8 in a horizontal position A (working position) are shown.
  • Fig. 20 shows a side view of the mechanism 1 according to the invention of a chair, which is also referred to as non-rotating gear, wherein the backrest support 3 is in a position A (working position).
  • the seat support 8 is in a horizontal position.
  • the power storage unit 2 is in the position D for heavy seat users, ie the connecting means 30 is positioned in the slot 46 of the wishbone 21 below.
  • the two bearing levers 19, which are connected in each case via a horizontal axis 20 with the wishbone 21, are in a rearwardly inclined basic position.
  • Fig. 21 a bottom view of the mechanism 1 of a chair according to the invention is shown, wherein in the detail section of the backrest support 3 with the main pivot bearing 7 and the connection of the power storage unit 2, in particular of the second guide member 29 is shown to the wishbone 21 via the connecting means 30 in the first pivot point 31.
  • the main pivot bearing 7 is rotatably supported in a stationary manner about a horizontal axis 6 on the bearing block 5, not shown.
  • each arranged on one side of the wishbone 21 bearing lever 19 are shown from below.
  • FIG. 22 Two side views of the mechanism 1 of a chair according to the invention, in particular a work or office chair, which is also referred to as non-rotating gear, shown in a first position A (working position) and in a second position B (relax position), not all construction elements of Mechanism 1 are shown.
  • the position B is achieved starting from the position A, that a seat occupant pivotal movement of the backrest support third around the horizontal axis 6 of the main rotary bearing 7 in the direction of arrow 62 performs, wherein the pivoting movement is limited by the stop 47 against the bearing lever 19.
  • the two bearing levers 19 in the position A slightly inclined backwards, ie in the direction of not shown backrest, and the power storage unit 2 is not fully shown, which is apparent from the connecting means 30 in the slot 46 of the wishbone 21, in the position C. ie in an upper end position of stepless weight adjustment suitable for lighter persons.
  • the synchronous mechanism and also the force storage unit 2 with the energy storage device is thus set in the embodiment for lighter persons.
  • an energy accumulator not shown, in particular a helical spring, in the position A, for example, a length of 115 mm.
  • the chair thus performs a pivoting movement in the direction of the arrow 62 about the horizontal axis 6 of the main rotary bearing 7. Due to the pivoting movement about the horizontal axis 6 of the main rotary bearing 7, the two bearing levers 19 are brought about a horizontal axis 20 of the bearing block 5, not shown, from a rear basic position to a front position, according to dashed arrow 63. In this way, the force storage unit 2, namely a progressive Coil spring, pressure-loaded. At the same time as the rotational movement of the bearing levers 19, the wishbone 21 rotates both about the horizontal axis 24 of the connectors 10 and about the horizontal axis 26 of the bearing levers 19.
  • the wishbone 21 thus simultaneously performs a first rotational movement about the transition from position A to position B horizontal axis 24 of the connectors 10 according to dashed arrow 64 and a second rotational movement about the horizontal axis 26 of the bearing lever 19 according to dashed arrow 65 from.
  • the wishbone 21 sets from a vertical position (see position A) to a more horizontal position (see position B).
  • the force storage unit 2 is additionally further subjected to pressure.
  • progressive energy storage, in particular springs, used, ie with increasing load is the spring harder to prevent penetration under heavy loads.
  • the force accumulator unit 2 in the exemplary embodiment is only 104 mm.
  • the energy storage of the energy storage unit 2 was thus compressed 11 mm.
  • a tracking of the seat support 8 is not mandatory.
  • Fig. 23 represents how Fig. 22 , Two side views of the mechanism 1 of a chair according to the invention, in particular a work or office chair, which is also referred to as non-rotating gear, in a position A (working position) and in a second position B (relax position), wherein not all structural elements of the mechanism 1 are shown.
  • the connecting means 30 and thus the first articulation point 31 of the not fully shown force storage unit 2 is located in the positions A and B, as compared to Fig. 22 , in a lower position D in the slot 46 of the wishbone 21.
  • the translational displacement of the position of the connecting means 30 in the slot 46 of the wishbone 21 was achieved by the spindle 51, not shown, of the gear 32, not shown.
  • the connecting means 30 Due to the translational displacement of the connecting means 30, ie the first articulation point 31, from an upper position C to a lower position D in the slot 46 of the wishbone 21, the length of the force accumulator, in particular a helical spring, is not changed, which also causes the bias of the energy accumulator the force storage unit 2 does not change.
  • the inclination angle (operating angle) of the force storage unit 2 is changed by the aforementioned translational displacement of the connecting means 30 via the spindle 32 belonging to the transmission 32 from the upper position C to the lower position D in the slot 46 of the wishbone 21, whereby also the line of action of Force storage unit 2 and thus also the energy storage on the wishbone changes.
  • the energy storage unit 2 is now in position D.
  • Die Position B is starting from the position A, as in Fig. 22 explained, thereby achieving that a seat occupant performs a pivoting movement of the backrest support 3 about the horizontal axis 6 of the main rotary link 7 in the direction of the arrow 62, wherein the pivoting movement is limited by the stop 47 against the bearing lever 19.
  • the two bearing levers 19 are in position A slightly to the rear, ie in the direction of holder 4 of a backrest, not shown, inclined.
  • the change of the inclination angle of the force storage unit 2 can be carried out without great effort in a position A of the backrest support 3.
  • the wishbone 21 rotates as shown below Fig. 22 described, from a vertical to a horizontal position, wherein the bearing levers 19 fold from a rear basic position to a front position about the horizontal axis 20 of the bearing block 5, not shown, in the direction of the dashed arrow 63.
  • the wishbone 21 thus simultaneously performs a first rotational movement about the horizontal axis 24 of the junction between the connector 10 and wishbone 21 in the direction of the dashed arrow 64 and a second rotational movement about the horizontal axis 26 of the bearing lever 19 according to dashed arrow 65, wherein the bearing lever 19th from a back home position to a front position.
  • the force storage unit 2 namely a progressive coil spring
  • the length of the coil spring in the embodiment is 101 mm.
  • the energy storage of the energy storage unit 2 was compressed by 14 mm at this setting of the inclination angle of the energy storage unit 2 (position D).
  • the inventive mechanism 1 which is also referred to as a non-rotating transmission, thus travels in its course for the energy storage progressively acting load curve 66. Due to the fact that the positions A and B of the FIGS. 22 and 23 are absolutely identical, a larger compression of the coil spring from 10 mm to 14 mm is achieved by a displacement of the connecting means 30 in the slot 46 of the wishbone 21 from an upper to a lower position. This greater compression of the force storage unit 2 is associated with an increasing progression during the load memory 66 acting on the force accumulator, which is why this position (connecting element in position D) is suitable as a setting for heavy seat users and the setting of Force storage unit 2 after Fig. 22 is recommended for light seat users.
  • an optimum weight setting method for improved seat occupant dynamic seating by means of the chair mechanism synchronizing mechanism 1, by which the seat surface structure is moved in synchronized relation to the seat back structure, is achieved by the mechanism 1 restoring force Synchronous mechanism is adjusted by means of a change in an operating angle of the force accumulator of the power storage unit 2 to a different body weight of a seat user, wherein first in a position A of the backrest support 3 by means of the adjusting device 11 via the gear 32, the position of the force storage unit 2 is adjusted to its line of action 61 and thereafter is carried along by a pivoting movement in the position B of the backrest support 3 of the seat support 8 synchronously to the backrest support 3, wherein the seat support 8 is a translational displacement in the translational bearing 16 in the direction the backrest and a rotary movement about a horizontal axis 6 of the main rotary bearing 7, on which the backrest support 3 is rotatably arranged around the bearing block 5, in the direction of arrow 62 experiences.
  • the bias is not changed by the change in the inclination angle of the power storage unit 2 via the spindle 32 belonging to the transmission 51 by means of the adjusting device 11, wherein a progression of the energy accumulator, namely the coil spring, is achieved in that the non-rotating gear, so the inventive Mechanism 1, by its load curve 66 progressively acting on the energy storage of the energy storage unit 2.
  • a progression of the energy accumulator namely the coil spring
  • Fig. 24 is an exemplary load curve 66, which is described by the mechanism 1 according to the invention, which is also referred to as non-rotating transmission, in the pivoting movement from a position A (working position) to a position B (relax position).
  • the non-rotating transmission thus interpolates a load curve 66 which progressively acts on the force accumulator of the force accumulator unit 2.
  • the sections 68 of the load curve 66 subdivided by dividing lines 67 each show the path traveled by the mechanism 1 per unit time. in this connection It can be seen that the portions 68 in the direction of the arrow 69 of the load curve 66 become larger.
  • the individual sections 68 of the load curve 66 exemplarily show a progression acting on the energy store.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Seats For Vehicles (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Claims (12)

  1. Mécanisme (1) pour une chaise avec un système synchrone au moyen duquel une structure d'assise est déplacée par rapport à une structure de dossier dans un rapport synchronisé l'une par rapport à l'autre, une force de rappel du système synchrone étant réglée par le mécanisme (1) sur un poids corporel différent d'un utilisateur de siège au moyen d'une modification d'un angle fonctionnel d'un accumulateur de force et le mécanisme (1) comportant un support de siège (8) pour la structure d'assise, un support de palier (5), une unité d'accumulation de force (2), un support de dossier (3) pour recevoir la structure de dossier et un palier de translation (16) et le mécanisme (1) comportant un bras triangulaire (21) et l'unité d'accumulation de force (2) étant reliée au bras triangulaire (21) et le mécanisme (1) comportant un connecteur (10) qui est disposé sur le support de dossier (3) et le mécanisme (1) comportant un levier de palier (19) qui est disposé pouvant tourner autour d'un axe (20) du support de palier (5) et le bras triangulaire (21) pouvant tourner autour d'un axe horizontal (24) du connecteur (10) et autour d'un axe horizontal (26) du levier de palier (19), caractérisé en ce que l'unité d'accumulation de force (2) comporte un ressort hélicoïdal progressif, sollicité en pression en tant qu'accumulateur de force.
  2. Mécanisme (1) selon la revendication 1, caractérisé en ce que l'unité d'accumulation de force (2) est reliée au bras triangulaire (21) au moyen d'un moyen de liaison (30).
  3. Mécanisme (1) selon la revendication 1 ou 2, caractérisé en ce que le mécanisme (1) comporte un organe de transmission (32) réglable par le biais d'un dispositif de réglage (11).
  4. Mécanisme (1) selon la revendication 3, caractérisé en ce que l'organe de transmission (32) est disposé sur le bras triangulaire (21).
  5. Mécanisme (1) selon la revendication 3 ou la revendication 4, caractérisé en ce que l'organe de transmission (32) comporte une broche (51).
  6. Mécanisme (1) selon la revendication 2 et 5, caractérisé en ce que la broche (51) de l'organe de transmission (32) agit sur le moyen de liaison (30) de telle sorte qu'un premier point d'articulation (31) de l'unité d'accumulation de force (2) est réglable dans sa position.
  7. Mécanisme (1) selon les revendications 6, caractérisé en ce que le premier point d'articulation (31) de l'unité d'accumulation (2) est déplacé du point de vue angulaire par rapport à sa ligne d'action (61).
  8. Mécanisme (1) selon la revendication 7, caractérisé en ce que le premier point d'articulation (31) de l'unité d'accumulation de force (2) est déplacé verticalement par rapport à sa ligne d'action (61).
  9. Procédé pour le réglage de poids pour une sensation d'assise dynamique améliorée d'un utilisateur de siège au moyen d'un mécanisme (1) pour une chaise avec un système synchrone au moyen duquel une structure d'assise est déplacée par rapport à une structure de dossier dans un rapport synchronisé l'une par rapport à l'autre, une force de rappel du système synchrone étant réglée par le mécanisme (1) sur le poids corporel différent d'un utilisateur de siège au moyen d'une modification d'un angle fonctionnel d'un accumulateur de force et le mécanisme (1) comportant un support de siège (8) pour la structure d'assise, un support de palier (5), une unité d'accumulation de force (2), un dispositif de réglage (11), un support de dossier (3) pour recevoir la structure de dossier et un palier de translation (16) et le mécanisme (1) comportant un bras triangulaire (21) et l'unité d'accumulation de force (2) étant reliée au bras triangulaire (21) et le mécanisme (1) comportant un connecteur (10) qui est disposé sur le support de dossier (3) et le mécanisme (1) comportant un levier de palier (19) qui est disposé pouvant tourner autour d'un axe (20) du support de palier (5) et le bras triangulaire (21) pouvant tourner autour d'un axe horizontal (24) du connecteur (10) et autour d'un axe horizontal (26) du levier de palier (19), caractérisé en ce que
    lors d'un mouvement de pivotement d'une position (A) du support de dossier (3) dans une deuxième position (B) du support de dossier (3), l'accumulateur de force de l'unité d'accumulation de force (2), exécuté sous la forme d'un ressort hélicoïdal progressif sollicité par pression, est progressivement sollicité.
  10. Procédé selon la revendication 9, caractérisé en ce que lors du mouvement de pivotement dans la deuxième position (B) du support de dossier (3), le bras triangulaire (21) exécute simultanément un premier mouvement de rotation autour d'un axe horizontal (24) d'un connecteur (10) et un deuxième mouvement de rotation autour d'un axe horizontal (26) d'un levier de palier (19).
  11. Procédé selon la revendication 9 ou la revendication 10, caractérisé en ce que lors du mouvement de pivotement dans la deuxième position (B) du support de dossier (3), le levier de palier (19) se rabat autour de l'axe horizontal (20) du support de palier (5) d'une position de base arrière dans une position avant.
  12. Procédé selon l'une quelconque des revendications 9 à 11, caractérisé en ce que le mécanisme (1) pour une chaise avec un système synchrone est un mécanisme (1) selon l'une quelconque des revendications 1 à 8.
EP16001223.3A 2015-06-01 2016-05-31 Mecanisme pour une chaise comprenant un mecanisme synchrone ; procede de reglage de poids pour un meilleur confort d'assise dynamique de l'utilisateur au moyen d'un mecanisme pour une chaise comprenant un mecanisme synchrone Active EP3100642B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015006760.5A DE102015006760B4 (de) 2015-06-01 2015-06-01 Mechanismus für einen Stuhl mit einer Synchronmechanik; Verfahren zur Gewichtseinstellung für ein verbessertes dynamisches Sitzgefühl des Sitznutzers mittels eines Mechanismus für einen Stuhl mit einer Synchronmechanik

Publications (2)

Publication Number Publication Date
EP3100642A1 EP3100642A1 (fr) 2016-12-07
EP3100642B1 true EP3100642B1 (fr) 2018-05-30

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EP16001223.3A Active EP3100642B1 (fr) 2015-06-01 2016-05-31 Mecanisme pour une chaise comprenant un mecanisme synchrone ; procede de reglage de poids pour un meilleur confort d'assise dynamique de l'utilisateur au moyen d'un mecanisme pour une chaise comprenant un mecanisme synchrone

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US (1) US9974387B2 (fr)
EP (1) EP3100642B1 (fr)
DE (1) DE102015006760B4 (fr)

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Publication number Priority date Publication date Assignee Title
DE202013102059U1 (de) * 2013-05-11 2014-08-12 Bock 1 Gmbh & Co. Kg Synchronmechanik

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DE3537203A1 (de) * 1984-10-24 1986-04-24 Klöber GmbH & Co, 7770 Überlingen Arbeitsstuhl mit neigungsmechanik von sitzschale und rueckenlehne
JPH0244583Y2 (fr) * 1985-03-12 1990-11-27
DE3727784A1 (de) * 1987-08-20 1989-03-02 Kloeber Gmbh & Co Arbeitsstuhl mit verschwenkbarer sitzschale
DE4324542A1 (de) * 1993-07-22 1995-01-26 Trendoffice Bueromoebel Stuhl, insbesondere Bürostuhl
DE19810768B4 (de) * 1998-03-06 2009-09-24 Drabert Gmbh Bürostuhl
JP4848099B2 (ja) * 2001-07-18 2011-12-28 タカノ株式会社 椅子
DE10302208A1 (de) * 2003-01-22 2004-07-29 Klöber GmbH Stuhl mit schnell verstellbarem Kraftspeicher
JP2010227314A (ja) * 2009-03-27 2010-10-14 Oki Electric Ind Co Ltd 椅子
CN103596469B (zh) * 2011-07-01 2016-10-05 L&P财产管理公司 用于椅子的倾斜机构及椅子
EP2739184B1 (fr) * 2011-08-03 2015-07-08 Haworth, Inc. Mécanisme de réglage permettant de déterminer une force de rappel qui agit sur un dossier d'une chaise, et chaise de bureau qui comporte un mécanisme de réglage de ce type
DE202011108433U1 (de) * 2011-11-18 2012-01-05 Joachim Rainer Brüske Sitzmöbel bzw. Bürostuhl mit Synchron Mechanik
ES2426021B1 (es) * 2012-04-16 2014-09-10 Grupo Forma 5, S.L. Sistema de regulación de la tensión de un respaldo de silla
DE102014226645B4 (de) * 2014-12-19 2023-10-05 Hangzhou Zhongtai Industrial Group Co., Ltd. Verstellmechanik zur Einstellung einer auf eine Rückenlehne eines Stuhls einwirkenden Rückstellkraft und Bürostuhl mit einer solchen Verstellmechanik
GB2551737B (en) * 2016-06-28 2019-06-05 Posturite Ltd Seat tilting mechanism with two springs

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Also Published As

Publication number Publication date
US20160345737A1 (en) 2016-12-01
US9974387B2 (en) 2018-05-22
DE102015006760A1 (de) 2016-12-01
DE102015006760B4 (de) 2017-07-27
DE102015006760A8 (de) 2017-07-06
EP3100642A1 (fr) 2016-12-07

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