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EP4420561A1 - Structure d'accoudoir pour chaise, et chaise à structure d'accoudoir - Google Patents

Structure d'accoudoir pour chaise, et chaise à structure d'accoudoir Download PDF

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Publication number
EP4420561A1
EP4420561A1 EP24158026.5A EP24158026A EP4420561A1 EP 4420561 A1 EP4420561 A1 EP 4420561A1 EP 24158026 A EP24158026 A EP 24158026A EP 4420561 A1 EP4420561 A1 EP 4420561A1
Authority
EP
European Patent Office
Prior art keywords
protrusions
armrest structure
clutch
part protrusions
base member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP24158026.5A
Other languages
German (de)
English (en)
Inventor
Michal Szelagowski
Pawel Janiszewski
Damian Piterek
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.)
Flokk Sp zoo
Original Assignee
Flokk Sp zoo
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 Flokk Sp zoo filed Critical Flokk Sp zoo
Publication of EP4420561A1 publication Critical patent/EP4420561A1/fr
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/54—Supports for the arms
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/54—Supports for the arms
    • A47C7/541—Supports for the arms of adjustable type
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/03—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
    • 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
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/03—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
    • A47C1/0307—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable rectilinearly in horizontal direction
    • 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
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/03—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests
    • A47C1/0308—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable by rotation

Definitions

  • Embodiments herein relate to an armrest structure for a chair. Embodiments herein further relate to a chair comprising one or more armrest structures.
  • Many chairs in particular office chairs, are to some extent adjustable to fit users of different size and with different seating preferences. For example, it may be possible to adjust inclination of the seat and/or back, lumbar support and neck support. In cases when an office chair is equipped with armrests, they may be foldable or adjustable.
  • An example is illustrated in US6053578A . While such solutions may work well in some applications, they are associated with some drawbacks or shortcomings. Release of a lever a button requires an extra moment before the position on the armrest can actually be shifted. When several adjustment possibilities are available on a chair, some trial-and-error may be required before the user understands which lever or button that is associated with release of a particular part of the chair before adjustment can be initiated. This is time consuming, and may lead to unintentional adjustments and readjustments of other parts of the chair before the armrest is released and adjusted. In modern and flexible work places a particular chair may used by several different persons over a day or week. Cumbersome adjustments may then be necessary quite frequently, and it may also be unhygienic when many users have to touch the same release levers and/or buttons for the adjustment.
  • US5746480A an armrest assembly for a chair is shown.
  • the armrest assembly is responsive to downward force on the armrest from a user's arm to restrict movement of the armrest.
  • Pressure i.e. weight of the arm or gravity, locks the armrest into a given position. Hence, no release buttons are necessary.
  • an armrest structure for a chair comprising:
  • the activation mechanism is adapted to be displaced in the first direction to rotate the clutch mechanism and disengaging the second part protrusions from the first part protrusions, whereby the base member can move in at least the first direction and/or opposite the first direction relative the an attachment part.
  • the clutch mechanism is rotatable around an axis perpendicular to the first direction and the third part protrusions comprises gear protrusions in a radiant direction around the axis.
  • the clutch mechanism comprises a clutch head protruding in a direction along the axis towards the attachment part
  • the clutch head comprising the second part protrusions comprises at least two protrusions protruding in a direction along the axis towards the attachment part and being off-set from the axis, and wherein the at least two protrusions defines an open space in the clutch head.
  • the clutch head comprises at least a first position wherein the second part protrusions are situated adjacent to at least one protrusion of the first part protrusions, and a second position whereby clutch head is rotated in relation to a first position, whereby the open space in the clutch head is situated adjacent to at least a part of the first part protrusions, and wherein the first position of the clutch head corresponds to a locked state of the armrest structure, and wherein the second position of the clutch head corresponds to an unlocked state of the armrest structure
  • the first part protrusions comprising a rack portion comprising at least two protrusions at a side thereof towards the clutch head.
  • the clutch head comprises at least two protrusion protruding in a direction along the axis towards the attachment part and mirrored on either side of the axis.
  • the second part protrusions of the clutch mechanism are adapted to be in a locked state when the second part protrusions are situated in at least partly between the first part protrusions, and to be in an unlocked state when second part protrusions are rotated in relation to the locked state, whereby the second part protrusions are not situated in between the first part protrusions.
  • the arm pad structure comprises a pretension mechanism adapted to pretension the activation mechanism in an initial state.
  • the activation mechanism comprises a pressing portion located on one side thereof and the fourth part protrusions comprising a rack portion at an underside thereof.
  • the pretension mechanism comprises a spring element in a first end attached to the base member, or parts thereof, and in a second end attached to the activation mechanism, or parts thereof.
  • the attachment part and base member comprises directional guide, wherein the directional guide comprises:
  • Fig. 1 illustrates a chair 100 comprising two armrest structures 0, 0' that may alternatively be referred to as an armrest assembly, an armrest or similar.
  • the armrest structures 0, 0' are movable at least in the direction F1, which is defined sideways in both directions in relation to the chair 100 in normal use.
  • Fig. 2 illustrates an armrest structure 0 movably to a support structure 7 of the chair 100 (of which only a side support structure is shown), the armrest structure 0 comprising a pressing portion 52 arranged to be operable by a user.
  • the chair may be any type of chair, such as an office chair, a car seat or the like.
  • the chair may comprise legs, a frame, a seat, a back support and possibly a neck support.
  • the support structure 7 onto which the armrest structure 0 may be attached to e.g. a frame of the chair, or to the seat or back support. It may be permanently attached or removable. For example, it may be attached with screws, bolts, press-fitting, glue or any other suitable attachment means.
  • the armrest structure 0 may be attached to the support structure 7 by any suitable attachment means, such as screws, bolts, glue or similar.
  • the armrest structure 0 comprising a base member 1 (shown in Fig. 2 ) providing structural support and an top member 10 adapted to provide a resting or support surface for a user.
  • the base member 1 and top member 10 operatively connected to each other, i.e. positioned relatively each other by shape-locking, snap-fitting or similar.
  • Figure 3 illustrates parts of the armrest structure 0 wherein base member 1 comprises an attachment part 3, which is attachable to a support structure 7 of the chair, wherein the attachment part 3 is displaceable relative to the base member 1 in at least a first direction F1.
  • the attachment part 3 may be attachable to the support structure 7 via fastening means 8, such that the attachment part 3 is stationary in relation to the support structure 7 and wherein the base member 1 is movable at least in the directions F1.
  • the base member 1 may thus comprise an aperture 12 or opening with an extent in at least the first direction F1, and in an another embodiment, also in the second direction F1, whereby the fastening means 8 for the attachment part 3 goes through the opening in the base member 1.
  • the attachment part 3 and base member 1 may comprise directional guiding means, wherein the directional guiding means comprises a sliding groove 91 aligned the first direction F1 of the an attachment part 3, and a sliding protrusion 92 aligned the first direction F1 of the base assembly 1 slidably engaged with the sliding groove, or alternatively a sliding groove aligned the first direction F1 of the base member 1, and a sliding longitudinal protrusion aligned the first direction F1 of the an attachment part 3 slidably engaged with the sliding groove.
  • the directional guiding means comprises a sliding groove 91 aligned the first direction F1 of the an attachment part 3, and a sliding protrusion 92 aligned the first direction F1 of the base assembly 1 slidably engaged with the sliding groove, or alternatively a sliding groove aligned the first direction F1 of the base member 1, and a sliding longitudinal protrusion aligned the first direction F1 of the an attachment part 3 slidably engaged with the sliding groove.
  • the attachment part 3 comprises first part protrusions 31, and wherein the armrest structure 0 further comprises a clutch mechanism 4 comprising second part protrusions 41, wherein the second part protrusions 41 are arranged to engage with the first part protrusions 31 of the attachment part 3, and wherein the clutch mechanism 4 further comprises a third part protrusions 42.
  • the armrest structure 0 further comprises an activation mechanism 5 comprises a fourth part protrusions 51 wherein the fourth part protrusions 51 are arranged to engage with the third part protrusions 42 of the clutch mechanism 4.
  • the activation mechanism 5 is adapted to be displaced in the first direction F1, preferably by a user, to rotate the clutch mechanism 4 and disengaging the second part protrusions 41 from the first part protrusions 31, whereby the base member 1 can move in at least the first direction F1 and/or opposite the first direction F1 relative the an attachment part 3.
  • the activation mechanism 5 may be movable i the first direction F1 in relation to the base member 1, such that fourth part protrusions 51 interacts with the third part protrusions 42 of the clutch mechanism 4, to translate movement of the activation mechanism 5 to the clutch mechanism 4.
  • the clutch mechanism 4 is rotatable around an axis X-X perpendicular to the first direction F1 and the third part protrusions 42 comprises gear protrusions in a radiant direction around the axis X-X.
  • the clutch mechanism 4 comprised of a gear, which in the illustrations comprises an extent in the second direction F2.
  • the clutch mechanism 4 may in an embodiment comprises a clutch head 43 protruding in a direction along the axis X-X towards the attachment part 3, the clutch head 43 comprising the second part protrusions 41 comprises at least two protrusions protruding in a direction along the axis X-X towards the attachment part 3 and being off-set from the axis X-X, and wherein the at least two protrusions defines an open space in the clutch head 43.
  • the clutch head 43 comprises at least two protrusion protruding in a direction along the axis X-X towards the attachment part 3 and mirrored on either side of the axis X-X.
  • Fig. 5 illustrates an embodiment wherein parts of the armrest structure 0 comprising a base member 1 is seen from above and with the sectional views of the planes A-A and B-B, and wherein the armrest structure is in a locked state L.
  • the fourth part protrusions 51 is illustrates as an rack of protrusion on an underside of the activation mechanism 5, wherein at least some of the fourth part protrusions 51 coincides with the radial second part protrusions 41 of the clutch mechanism 4.
  • the activation mechanism 5 When a pressing portion 52 of the activation mechanism 5 is not activated, the activation mechanism 5 is in a pensioned position, and the fourth part protrusions 51 of the activation mechanism 5 interacts and holds the second part protrusions 41, and thus the the clutch mechanism 4, in an initial first position.
  • the two second part protrusions 41 of the clutch head 43 is seen in the first position whereby the two second part protrusions 41 of the clutch head 43 is situated between the at least a part of the first part protrusions 31. In this position, parts of the clutch head 43 sits between at least two of the protrusions of the first part protrusions 31, and the base member 1 is not movable in relation to the attachment part 3, and the armrest structure 0 is in its locked state L.
  • Fig. 6 illustrates an embodiment wherein parts of the armrest structure 0 comprising a base member 1 is seen from above and with the sectional views of the planes A-A and B-B.
  • the fourth part protrusions 51 is illustrates as an rack of protrusion on an underside of the activation mechanism 5, wherein at least some of the fourth part protrusions 51 coincides with the radial second part protrusions 41 of the clutch mechanism 4.
  • the activation mechanism 5 When a user presses or pushes a pressing portion 52 of the activation mechanism 5, the activation mechanism 5 is translated a distance sideways, thus translating sideways translation of the activation mechanism 5, via the fourth part protrusions 51 and the second part protrusions 41, to rotational motion of the the clutch mechanism 4, as indicated by the rotational arrow.
  • the two second part protrusions 41 of the clutch head 43 is seen in an second position whereby clutch head 43 is rotated in relation to a first position, whereby the open space in the clutch head 43 is situated adjacent to at least a part of the first part protrusions 31, wherein the second state of the clutch head 43 corresponds to an unlocked state U of the armrest structure 0.
  • the clutch head 43 does not sit between the first part protrusions 31, and the base member 1 is movable in relation to the attachment part 3.
  • the armrest structure is set in the second position.
  • first part protrusions 31 comprising a rack portion comprising at least two protrusions arranged adjacent two another at a side thereof towards the clutch head 43.
  • the first part protrusions 31 can comprise a row of any number of protrusions.
  • the second part protrusions 41 of the clutch mechanism 4 are adapted to be in a locked state L when the second part protrusions 41 are situated in at least partly between any of the first part protrusions 31, and to be in an unlocked U state when second part protrusions 41 are rotated in relation to the locked state L, whereby the second part protrusions 41 are not situated in between the first part protrusions 31.
  • the armrest structure 0 may comprise a pretension mechanism 6 adapted to pretension the activation mechanism 5 in an initial first position, corresponding to the first position and the locked state L.
  • the pretension mechanism 6 may comprises a spring element in a first end attached to the base member 1, or parts thereof, and in a second end attached to the activation mechanism 5, or parts thereof, to pretension the activation mechanism 5 to a position wherein the clutch head 43 stops relative movement between the attachment part 3 and the base member 1.
  • the activation mechanism 5 comprises a pressing portion 52 located on one side thereof and the fourth part protrusions 51 comprising a rack portion at an underside thereof.
  • the pressing portion 52 can be accessible through an opening or cut-out of base member 1, and adapted to be activated by a user to change the state from a locked state L to an unlocked state U.
  • the attachment part 3, the clutch mechanism 4 and the activation mechanism 5 are adapted to translate movement of the activation mechanism 5, from an initial locked state L to an activated unlocked state U. This may be achieved by the activation mechanism 5 inducing rotation on the clutch mechanism 4 and disengaging the second part protrusions 41 from the first part protrusions 31, whereby the base member 1 can move in at least the first direction F1 relative the an attachment part 3.
  • the activation mechanism 5 comprises a fifth part protrusion 53 wherein the base member comprises a sixth part protrusion 11.
  • the sixth part protrusion 11 are arranged in a row or the like along a second direction the direction F2, and the fifth part protrusion 53 are arranged to engage the sixth part protrusion 11.
  • the activation mechanism 5 may be in a pretension state, wherein the sixth part protrusion 11 the fifth part protrusion 53 are angered, preventing any movement between the the base member 1 and the an attachment part 3 in the second direction F2.
  • the second direction F2 being perpendicular to the first direction F1.
  • the activation mechanism 5 When the activation mechanism 5 is activated, the activation mechanism 5 is translated away from the sixth part protrusion 11, and the fifth part protrusion 53 are no longer engaging with the he sixth part protrusion 11.
  • the clutch mechanism 4 comprised of a gear, which in the illustrations comprises an extent in the second direction F2
  • the fourth part protrusions 51 can move in relation to the third part protrusions 42 in the second direction F2.
  • the base member 1, and hence the top member 10 cab be locked in both the first F1 and second direction F2, in the locked state L, and be movable in both the first F1 and second direction F2, in the unlocked state U.
  • Fig. 7 illustrates an embodiment wherein the base member 1 comprises a sliding plate 2 adapted to move in the second direction F2 within the base member 1.
  • the sliding plate 2 comprises the sliding protrusion 92 adapted to receive the sliding groove 91 of the attachment part 3 and to hold the clutch mechanism 4 in a rotational manner. This can be achieved with two snap supports or the like, in, or close to, either end of the clutch mechanism 4.
  • the base member 1 is illustrated without any of the associated parts installed, wherein the aperture 12 is illustrated.
  • the sliding plate 2 is illustrated on its own.
  • the sliding plate 2 comprises the sixth part protrusions 11 adapted to interact with the fifth part protrusions 53 of the activation mechanism 5.
  • the sliding plate 2 can be movably supported in the base member 1 via a first set of guiding means 13, 13' such as snap arms or the like.
  • the activation mechanism 5 can be movably supported in the base member 1 via a second set of guiding means 14, 14' such as snap arms or the like.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Seats For Vehicles (AREA)
EP24158026.5A 2023-02-17 2024-02-16 Structure d'accoudoir pour chaise, et chaise à structure d'accoudoir Pending EP4420561A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO20230162A NO20230162A1 (en) 2023-02-17 2023-02-17 Armrest structure for a chair, and chair with armrest structure

Publications (1)

Publication Number Publication Date
EP4420561A1 true EP4420561A1 (fr) 2024-08-28

Family

ID=89983455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24158026.5A Pending EP4420561A1 (fr) 2023-02-17 2024-02-16 Structure d'accoudoir pour chaise, et chaise à structure d'accoudoir

Country Status (3)

Country Link
EP (1) EP4420561A1 (fr)
CN (1) CN118512087A (fr)
NO (1) NO20230162A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5746480A (en) 1990-10-15 1998-05-05 Bonutti; Peter M. Armrest assembly
US6053578A (en) 1997-06-04 2000-04-25 Knoll, Inc. Multi-adjustable armrest assembly
US20190174921A1 (en) * 2017-12-08 2019-06-13 Atec International Team Co., Ltd. Armrest adjuster
US20210274940A1 (en) * 2020-03-03 2021-09-09 Wen-Ping Hsieh Multi-directional adjustable armrest pad and chair armrest device with armrest pad

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI414256B (zh) * 2010-08-06 2013-11-11 Yi Chun Entpr Ltd 扶手結構
DE202011050890U1 (de) * 2011-08-03 2011-09-27 Tsung-Wen Huang Armlehnenstruktur
GB2524766B (en) * 2014-04-01 2017-07-12 Wang Chih-Wei Armrest assembly for a chair
KR102258527B1 (ko) * 2019-06-17 2021-05-31 송완수 의자용 팔걸이

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5746480A (en) 1990-10-15 1998-05-05 Bonutti; Peter M. Armrest assembly
US6053578A (en) 1997-06-04 2000-04-25 Knoll, Inc. Multi-adjustable armrest assembly
US20190174921A1 (en) * 2017-12-08 2019-06-13 Atec International Team Co., Ltd. Armrest adjuster
US20210274940A1 (en) * 2020-03-03 2021-09-09 Wen-Ping Hsieh Multi-directional adjustable armrest pad and chair armrest device with armrest pad

Also Published As

Publication number Publication date
CN118512087A (zh) 2024-08-20
NO20230162A1 (en) 2024-08-19

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