EP3785570B1 - Assise de chaise avec mécanisme de coulissement et de verrouillage - Google Patents

Assise de chaise avec mécanisme de coulissement et de verrouillage Download PDF

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Publication number
EP3785570B1
EP3785570B1 EP19194518.7A EP19194518A EP3785570B1 EP 3785570 B1 EP3785570 B1 EP 3785570B1 EP 19194518 A EP19194518 A EP 19194518A EP 3785570 B1 EP3785570 B1 EP 3785570B1
Authority
EP
European Patent Office
Prior art keywords
sliding
positioning tube
positioning
seat
chair 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.)
Active
Application number
EP19194518.7A
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German (de)
English (en)
Other versions
EP3785570A1 (fr
Inventor
Chang-Chen Lin
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.)
Individual
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Individual
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 Individual filed Critical Individual
Priority to EP19194518.7A priority Critical patent/EP3785570B1/fr
Priority to DK19194518.7T priority patent/DK3785570T3/da
Publication of EP3785570A1 publication Critical patent/EP3785570A1/fr
Application granted granted Critical
Publication of EP3785570B1 publication Critical patent/EP3785570B1/fr
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    • 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
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03238—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
    • 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
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/03238—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
    • A47C1/03244—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism positioned under the 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
    • A47C1/031—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
    • A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers

Definitions

  • the present invention relates to a chair seat with a sliding and locking mechanism and, more particularly, to a chair seat with a mechanism for reliably locking the chair seat in a desired position.
  • Conventional leisure chairs permitting position adjustment for sitting and lying generally include a rod fixed on a base.
  • a locking mechanism is slidably mounted on the rod and is coupled with a chair seat.
  • the chair seat can be moved through adjustment, and the locking mechanism can move along the rod.
  • the locking mechanism and the rod are fixed to position the chair seat.
  • the backrest is also moved together with the chair seat, such that the sitting angle or lying angle can be adjusted.
  • a positioning device in an arrangement to overcome the above disadvantages, includes a clamping seat, a positioning block, an adjusting rod, and a coupling mechanism.
  • the clamping seat can move together with a chair seat and includes a hole receiving a fixed rod on the chair seat.
  • the clamping seat further includes first and second clamping members movable relative to each other between an open state and a clamping state.
  • the positioning block is mounted on the clamping seat.
  • the adjusting rod is coupled to a side of the positioning block by the coupling mechanism.
  • the adjusting rod can pivot to move the first and second clamping members to the open state, permitting the chair seat and the clamping seat to slide along the fixed rod.
  • the adjusting rod displaces when the chair seat and the clamping seat move, such that the hand of a user cannot control the adjusting rod according to the habitual position. Furthermore, when the clamping seat is moved to a front position permitting the user to lie down, the user may have to get up to grip the adjusting rod that has moved to the front position, causing inconvenience in use.
  • An objective of the present invention is to provide a chair seat with sliding and locking mechanism providing improved operational convenience and improved locking stability.
  • a chair seat with sliding and locking mechanism includes a sliding and locking mechanism for the chair seat, which comprises a positioning tube and a sliding seat.
  • the positioning tube is mounted to a rod of a base of a chair having the chair seat.
  • the positioning tube is rotatable relative to the rod but is not slidable relative to the rod along a longitudinal axis of the rod.
  • the positioning tube includes a positioning portion.
  • the sliding seat includes a coupling portion coupled with the chair seat, permitting joint movement of the sliding seat and the chair seat.
  • the coupling portion includes a receiving portion having a receiving hole with a catching portion. The positioning tube is received in the receiving hole.
  • the sliding seat When the positioning tube is rotated relative to the rod to a first position in which the positioning portion disengages from the catching portion, the sliding seat is movable along the positioning tube. When the positioning tube is rotated relative to the rod to a second position in which the positioning portion engages with the catching portion, the sliding seat is fixed relative to the positioning tube.
  • the positioning portion protrudes outwards from an outer periphery of the positioning tube and extends in an axial direction.
  • the receiving hole of the sliding seat includes a recessed portion corresponding to the positioning portion of the positioning tube.
  • the catching portion is disposed at a side of the receiving hole corresponding to the recessed portion.
  • the positioning portion of the positioning tube can be moved to a position aligned with the recessed portion of the sliding seat and disengages from the catching portion, permitting adjustment of the position of the sliding seat.
  • the positioning portion of the positioning tube engages with the catching portion by turning the positioning tube to another position, the position of the chair seat is fixed. Accordingly, the operation is simple.
  • the chair seat can be pivotably coupled with a backrest, such that the reclining angle of the backrest can be adjusted while adjusting the position of the chair seat.
  • the positioning portion of the positioning tube includes a first toothed portion extending in the axial direction.
  • the first toothed portion includes a plurality of first teeth.
  • Each of the plurality of first teeth has a tip tangent to the positioning tube.
  • the catching portion of the sliding seat includes a second toothed portion engageable with the first toothed portion.
  • the second toothed portion includes a plurality of second teeth engageable with the plurality of first teeth.
  • the positioning tube includes a handle extending radially from an outer side of the positioning tube.
  • the handle can be operated to rotate the positioning tube.
  • the positioning portion engages with the catching portion
  • the first teeth of the first toothed portion engage with the second teeth of the second toothed portion, which provides a better positioning effect than conventional mechanisms by friction.
  • the positions of the sliding seat and the chair seat and the reclining angle of the backrest frame can be reliably retained.
  • the sliding and locking mechanism of the chair seat according to the present invention provides improved locking stability and improved operational convenience.
  • FIGS. 1-3 show a chair including a chair seat 2 with a sliding and locking mechanism 4 of an embodiment according to the present invention.
  • the chair includes a base 1, the chair seat 2, a backrest frame 3, and the sliding and locking mechanism 4 for the chair seat 2.
  • the base 1 includes two upright supporting boards 11 opposite to each other.
  • Two armrest frames 12 are disposed on tops of the two upright supporting boards 11, respectively.
  • a rod 13 is mounted between each of the two upright supporting boards 11 and an associated armrest frame 12.
  • the backrest frame 3 is pivotably connected to the two armrest frames 12 and the chair seat 2.
  • the backrest frame 3 can move relative to the seat 2 to change a reclining angle.
  • the sliding and locking mechanism 4 of the chair seat 2 is mounted on at least one of the rods 13 and includes a positioning tube 41 and a sliding seat 42.
  • the positioning tube 41 is mounted around and rotatable relative to the rod 13 but is not slidable relative to the rod 13 along a longitudinal axis of the rod 13.
  • the positioning tube 41 includes a positioning portion 411 protruding outwards from an outer periphery of the positioning tube 41 and extending in an axial direction.
  • the positioning portion 411 of the positioning tube 41 includes a first toothed portion 412 extending in the axial direction.
  • the first toothed portion 412 includes a plurality of first teeth 413 arranged consecutively in the axial direction. Each of the plurality of first teeth 413 has a tip tangent to the positioning tube 41.
  • a handle 414 extends radially from an outer side of the positioning tube 41.
  • the sliding seat 42 includes a side having a coupling portion 421 coupled with the chair seat 2, permitting joint movement of the sliding seat 42 and the chair seat 2.
  • the coupling portion 421 includes a side including a receiving portion 422 having a receiving hole 423.
  • the positioning tube 41 is received in the receiving hole 423.
  • the receiving hole 423 of the sliding seat 42 includes a recessed portion 424 corresponding to the positioning portion 411 of the positioning tube 41.
  • the recessed portion 424 includes a side having a catching portion 425 preferably made of an anti-sliding material and located corresponding to the recessed portion 424.
  • the catching portion 425 includes a second toothed portion 426 having a plurality of second teeth 427 engageable with the plurality of first teeth 413 of the first toothed portion 412.
  • the positioning portion 411 of the positioning tube 41 is aligned with the recessed portion 424 of the sliding seat 42, and the positioning portion 411 disengages from the catching portion 425.
  • the sliding seat 42 can move along the positioning tube 41 to adjust the position of the sliding seat 42 and the reclining angle of the backrest frame 3.
  • the handle 414 can be operated to rotate the positioning tube 41 relative to the rod 13 to a second position (see FIGS. 5 and 6 ), such that the positioning portion 411 engages with the catching portion 425.
  • the first teeth 413 of the first toothed portion 412 engage with the second teeth 427 of the second toothed portion 426, which provides a better positioning effect than conventional mechanisms by friction.
  • the positions of the sliding seat 42 and the chair seat 2 and the reclining angle of the backrest frame 3 can be reliably retained.
  • the handle 414 During adjustments where the sliding seat 42 moves between different positions, the handle 414 remains in the same position, a user can easily hold the handle 414 according to his or her operational habit.
  • the handle 414 is adj acent to the backrest frame 3.
  • the sliding and locking mechanism according to the present invention provides improved locking stability and improved operational convenience.
  • the positioning portion 411 and the catching portion 425 can still be locked by friction while permitting easy operation of the handle 414.

Claims (6)

  1. Assise de chaise (2) à mécanisme de coulissement et de verrouillage (4), le mécanisme de coulissement et de verrouillage (4) comprenant :
    un tube de positionnement (41) monté sur une tige (13) d'une base (1) d'une chaise présentant l'assise de chaise (2), dans laquelle le tube de positionnement (41) peut tourner par rapport à la tige (13), mais ne peut pas coulisser par rapport à la tige (13) le long d'un axe longitudinal de la tige (13), et dans laquelle le tube de positionnement (41) inclut une partie de positionnement (411) ;
    une assise coulissante (42) incluant une partie de couplage (421) couplée à l'assise de chaise (2), permettant un mouvement conjoint de l'assise coulissante (42) et de l'assise de chaise (2), dans laquelle la partie de couplage (421) inclut une partie de réception (422) présentant un trou de réception (423) avec une partie d'accrochage (425), dans laquelle le tube de positionnement (41) est reçu dans le trou de réception (423), dans laquelle quand le tube de positionnement (41) est tourné par rapport à la tige (13) jusqu'à une première position dans laquelle la partie de positionnement (411) se désengage de la partie d'accrochage (425), l'assise coulissante (42) est mobile le long du tube de positionnement (41), et dans laquelle quand le tube de positionnement (41) est tourné par rapport à la tige (13) jusqu'à une seconde position dans laquelle la partie de positionnement (411) s'engage dans la partie d'accrochage (425), l'assise coulissante (42) est fixe par rapport au tube de positionnement (41).
  2. Assise de chaise (2) à mécanisme de coulissement et de verrouillage (4) selon la revendication 1, dans laquelle la partie de positionnement (411) fait saillie vers l'extérieur à partir d'une périphérie externe du tube de positionnement (41) et s'étend dans une direction axiale, et dans laquelle le trou de réception (423) de l'assise coulissante (42) inclut une partie évidée (424) correspondant à la partie de positionnement (411) du tube de positionnement (41).
  3. Assise de chaise (2) à mécanisme de coulissement et de verrouillage (4) selon la revendication 2, dans laquelle la partie d'accrochage (425) est disposée sur un côté du trou de réception (423) correspondant à la partie évidée (424).
  4. Assise de chaise (2) à mécanisme de coulissement et de verrouillage (4) selon la revendication 3, dans laquelle la partie de positionnement (411) du tube de positionnement (41) inclut une première partie dentée (412) s'étendant dans la direction axiale, dans laquelle la partie d'accrochage (425) de l'assise coulissante (42) inclut une seconde partie dentée (426) pouvant s'engrener avec la première partie dentée (412).
  5. Assise de chaise (2) à mécanisme de coulissement et de verrouillage (4) selon la revendication 4, dans laquelle la première partie dentée (412) inclut une pluralité de premières dents (413), dans laquelle chacune de la pluralité de premières dents (413) présente une pointe tangente au tube de positionnement (41), et dans laquelle la seconde partie dentée (426) inclut une pluralité de secondes dents (427) pouvant s'engrener avec la pluralité de premières dents (413).
  6. Assise de chaise (2) à mécanisme de coulissement et de verrouillage (4) selon la revendication 1, dans laquelle le tube de positionnement (41) inclut une poignée (414) s'étendant radialement à partir d'un côté externe du tube de positionnement (41).
EP19194518.7A 2019-08-30 2019-08-30 Assise de chaise avec mécanisme de coulissement et de verrouillage Active EP3785570B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19194518.7A EP3785570B1 (fr) 2019-08-30 2019-08-30 Assise de chaise avec mécanisme de coulissement et de verrouillage
DK19194518.7T DK3785570T3 (da) 2019-08-30 2019-08-30 Stolesæde med glide- og låsemekanisme

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19194518.7A EP3785570B1 (fr) 2019-08-30 2019-08-30 Assise de chaise avec mécanisme de coulissement et de verrouillage

Publications (2)

Publication Number Publication Date
EP3785570A1 EP3785570A1 (fr) 2021-03-03
EP3785570B1 true EP3785570B1 (fr) 2023-10-18

Family

ID=67810414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19194518.7A Active EP3785570B1 (fr) 2019-08-30 2019-08-30 Assise de chaise avec mécanisme de coulissement et de verrouillage

Country Status (2)

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EP (1) EP3785570B1 (fr)
DK (1) DK3785570T3 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE355329C (de) * 1922-06-24 Albert Hutt Hoeheneinstellvorrichtung fuer Kontor-, Musikstuehle, Tische und sonstige Moebel o. dgl.
GB1488009A (en) * 1975-05-23 1977-10-05 Lucas Electrical Ltd Article of furniture
DE19519522C1 (de) * 1995-06-02 1996-11-07 Lahde Armin Dipl Ing Fh Sicherungs- und Bedienungseirnichtung für Teleskoprohre mit bajonettverschlußähnlichen Sperrvorrichtungen
US7735925B2 (en) 2008-11-13 2010-06-15 Zhongshan Kemi Commodity Co., Ltd. Positioning device for chair
CN203524200U (zh) * 2013-10-22 2014-04-09 施梦琛 躺椅靠背调节装置
CN203709619U (zh) * 2013-12-26 2014-07-16 浙江振东旅游用品有限公司 一种锁定部件
US9854913B1 (en) * 2017-05-11 2018-01-02 Ann Yang Inc. Telescopic leg unit for table and chair

Also Published As

Publication number Publication date
DK3785570T3 (da) 2024-01-22
EP3785570A1 (fr) 2021-03-03

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