US20020070597A1 - Chair adjustment device - Google Patents

Chair adjustment device Download PDF

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Publication number
US20020070597A1
US20020070597A1 US09/738,659 US73865900A US2002070597A1 US 20020070597 A1 US20020070597 A1 US 20020070597A1 US 73865900 A US73865900 A US 73865900A US 2002070597 A1 US2002070597 A1 US 2002070597A1
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US
United States
Prior art keywords
aperture
connection plate
round
driven block
click
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.)
Abandoned
Application number
US09/738,659
Inventor
Gen-Fong Liu
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
Original Assignee
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 US09/738,659 priority Critical patent/US20020070597A1/en
Publication of US20020070597A1 publication Critical patent/US20020070597A1/en
Abandoned legal-status Critical Current

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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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/38—Support for the head or the back for the head
    • 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
    • A47C1/0308—Reclining or easy chairs having independently-adjustable supporting parts the parts being arm-rests adjustable by rotation

Definitions

  • the present invention relates to a chair adjustment device. More particularly, the present invention relates to a chair adjustment device which is operated easily.
  • a conventional chair adjustment device is connected to an air cylinder. However, it is cumbersome to operate the conventional chair adjustment device.
  • An object of the present invention is to provide a chair adjustment device which is operated easily.
  • a chair adjustment device comprises a U-shaped frame, a first connection plate disposed on a first side of the U-shaped frame, a second connection plate disposed on a second side of the U-shaped frame, a first driven block covering the first connection plate, and a second driven block covering the second connection plate.
  • the first connection plate has a first round hole, a first circular aperture, and a second circular aperture.
  • the second connection plate has a second round hole.
  • the first driven block has a through hole, a protruded bar, and a protrusion.
  • the second driven block has a through aperture.
  • a shaft passes through the through aperture of the second driven block, the second round hole of the second connection plate, the first round hole of the first connection plate, and the through hole of the first driven block.
  • a click gear is disposed in the first driven block.
  • a click pawl has a first round aperture and a second round aperture.
  • a compression spring has a first end inserted in the circular aperture of the first connection plate and a second end inserted in the first round aperture of the click pawl.
  • a rivet passes through the first circular aperture of the first connection plate and the second round aperture of the click pawl to fasten the first connection plate and the click pawl together. The click pawl engages with the click gear.
  • FIG. 1 is a schematic view illustrating two chair adjustment devices disposed in a chair
  • FIG. 2 is a perspective exploded view of a chair adjustment device of a first preferred embodiment in accordance with the present invention
  • FIG. 3 is a perspective assembly view of a chair adjustment device of a first preferred embodiment in accordance with the present invention.
  • FIG. 4 is a perspective assembly view of a chair adjustment device of a second preferred embodiment in accordance with the present invention.
  • FIG. 5 is a schematic view illustrating a first operation of a chair adjustment device of a first preferred embodiment in accordance with the present invention
  • FIG. 6 is a schematic view illustrating a second operation of a chair adjustment device of a first preferred embodiment in accordance with the present invention
  • FIG. 7 is a schematic view illustrating a third operation of a chair adjustment device of a first preferred embodiment in accordance with the present invention.
  • FIG. 8 is a schematic view illustrating a fourth operation of a chair adjustment device of a first preferred embodiment in accordance with the present invention.
  • a first chair adjustment device comprises a U-shaped frame 1 , a first connection plate 3 disposed on a first side of the U-shaped frame 1 , a second connection plate 3 a disposed on a second side of the U-shaped frame 1 , a first driven block 4 covering the first connection plate 3 , and a second driven block 18 covering the second connection plate 3 a.
  • the first connection plate 3 has a first round hole 14 , a first circular aperture 12 , and a second circular aperture 17 .
  • the second connection plate 3 a has a second round hole 14 a.
  • the first driven block 4 has a through hole 2 , a protruded bar 5 , and a protrusion 6 .
  • the second driven block 18 has a through aperture 16 .
  • a shaft 15 passes through the through aperture 16 of the second driven block 18 , the second round hole 14 a of the second connection plate 3 a , the first round hole 14 of the first connection plate 3 , and the through hole 2 of the first driven block 4 .
  • a click gear 7 is disposed in the first driven block 4 .
  • a click pawl 8 has a first round aperture 9 and a second round aperture 11 .
  • a compression spring 10 has a first end 101 inserted in the circular aperture 17 of the first connection plate 3 and a second end 102 inserted in the first round aperture 9 of the click pawl 8 .
  • a rivet 13 passes through the first circular aperture 12 of the first connection plate 3 and the second round aperture 11 of the click pawl 8 to fasten the first connection plate 3 and the click pawl 8 together.
  • the click pawl 8 engages with the click gear 7 .
  • the U-shaped frame 1 is connected to a chair support frame 30 in a chair.
  • the first chair adjustment device is a headpiece adjustment device 19 .
  • the click pawl 8 disengages from the click gear 7 and engages with the protrusion 6 .
  • FIG. 4 shows a second chair adjustment device as an armrest adjustment device 20 .

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Abstract

A chair adjustment device has a U-shaped frame, a first connection plate having a first round hole, a first circular aperture, and a second circular aperture, a second connection plate having a second round hole, a first driven block having a through hole, a protruded bar, and a protrusion, and a second driven block having a through aperture. A shaft passes through the through aperture, the second round hole, the first round hole, and the through hole. A click gear is disposed in the first driven block. A click pawl has a first round aperture and a second round aperture. A compression spring is inserted in the circular aperture and the first round aperture. A rivet passes through the first circular aperture and the second round aperture. The click pawl engages with the click gear.

Description

    BACKGROUND OF THE INVENTION
  • The present invention relates to a chair adjustment device. More particularly, the present invention relates to a chair adjustment device which is operated easily. [0001]
  • A conventional chair adjustment device is connected to an air cylinder. However, it is cumbersome to operate the conventional chair adjustment device. [0002]
    • SUMMARY OF THE INVENTION
  • An object of the present invention is to provide a chair adjustment device which is operated easily. [0003]
  • Accordingly, a chair adjustment device comprises a U-shaped frame, a first connection plate disposed on a first side of the U-shaped frame, a second connection plate disposed on a second side of the U-shaped frame, a first driven block covering the first connection plate, and a second driven block covering the second connection plate. The first connection plate has a first round hole, a first circular aperture, and a second circular aperture. The second connection plate has a second round hole. The first driven block has a through hole, a protruded bar, and a protrusion. The second driven block has a through aperture. A shaft passes through the through aperture of the second driven block, the second round hole of the second connection plate, the first round hole of the first connection plate, and the through hole of the first driven block. A click gear is disposed in the first driven block. A click pawl has a first round aperture and a second round aperture. A compression spring has a first end inserted in the circular aperture of the first connection plate and a second end inserted in the first round aperture of the click pawl. A rivet passes through the first circular aperture of the first connection plate and the second round aperture of the click pawl to fasten the first connection plate and the click pawl together. The click pawl engages with the click gear.[0004]
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a schematic view illustrating two chair adjustment devices disposed in a chair; [0005]
  • FIG. 2 is a perspective exploded view of a chair adjustment device of a first preferred embodiment in accordance with the present invention; [0006]
  • FIG. 3 is a perspective assembly view of a chair adjustment device of a first preferred embodiment in accordance with the present invention; [0007]
  • FIG. 4 is a perspective assembly view of a chair adjustment device of a second preferred embodiment in accordance with the present invention; [0008]
  • FIG. 5 is a schematic view illustrating a first operation of a chair adjustment device of a first preferred embodiment in accordance with the present invention; [0009]
  • FIG. 6 is a schematic view illustrating a second operation of a chair adjustment device of a first preferred embodiment in accordance with the present invention; [0010]
  • FIG. 7 is a schematic view illustrating a third operation of a chair adjustment device of a first preferred embodiment in accordance with the present invention; and [0011]
  • FIG. 8 is a schematic view illustrating a fourth operation of a chair adjustment device of a first preferred embodiment in accordance with the present invention.[0012]
    • DETAILED DESCRIPTION OF THE INVENTION
  • Referring to FIGS. [0013] 1 to 3 and FIGS. 5 to 8, a first chair adjustment device comprises a U-shaped frame 1, a first connection plate 3 disposed on a first side of the U-shaped frame 1, a second connection plate 3 a disposed on a second side of the U-shaped frame 1, a first driven block 4 covering the first connection plate 3, and a second driven block 18 covering the second connection plate 3 a.
  • The [0014] first connection plate 3 has a first round hole 14, a first circular aperture 12, and a second circular aperture 17.
  • The second connection plate [0015] 3 a has a second round hole 14 a.
  • The first driven block [0016] 4 has a through hole 2, a protruded bar 5, and a protrusion 6.
  • The second driven [0017] block 18 has a through aperture 16.
  • A [0018] shaft 15 passes through the through aperture 16 of the second driven block 18, the second round hole 14 a of the second connection plate 3 a, the first round hole 14 of the first connection plate 3, and the through hole 2 of the first driven block 4.
  • A [0019] click gear 7 is disposed in the first driven block 4.
  • A [0020] click pawl 8 has a first round aperture 9 and a second round aperture 11.
  • A [0021] compression spring 10 has a first end 101 inserted in the circular aperture 17 of the first connection plate 3 and a second end 102 inserted in the first round aperture 9 of the click pawl 8.
  • A [0022] rivet 13 passes through the first circular aperture 12 of the first connection plate 3 and the second round aperture 11 of the click pawl 8 to fasten the first connection plate 3 and the click pawl 8 together.
  • The [0023] click pawl 8 engages with the click gear 7.
  • The U-shaped [0024] frame 1 is connected to a chair support frame 30 in a chair.
  • The first chair adjustment device is a [0025] headpiece adjustment device 19.
  • Referring to FIGS. [0026] 5 to 7 again, the click pawl 8 moves from the protruded bar 5 to the click gear 7.
  • Referring to FIG. 8 again, the [0027] click pawl 8 disengages from the click gear 7 and engages with the protrusion 6.
  • FIG. 4 shows a second chair adjustment device as an [0028] armrest adjustment device 20.
  • The invention is not limited to the above embodiment but various modification thereof may be made. Further, various changes in form and detail may be made without departing from the scope of the invention. [0029]

Claims (1)

I claim:
1. A chair adjustment device comprises
a U-shaped frame, a first connection plate disposed on a first side of the U-shaped frame, a second connection plate disposed on a second side of the U-shaped frame, a first driven block covering the first connection plate, and a second driven block covering the second connection plate,
the first connection plate having a first round hole, a first circular aperture, and a second circular aperture,
the second connection plate having a second round hole,
the first driven block having a through hole, a protruded bar, and a protrusion,
the second driven block having a through aperture,
a shaft passing through the through aperture of the second driven block, the second round hole of the second connection plate, the first round hole of the first connection plate, and the through hole of the first driven block,
a click gear disposed in the first driven block,
a click pawl having a first round aperture and a second round aperture,
a compression spring having a first end inserted in the circular aperture of the first connection plate and a second end inserted in the first round aperture of the click pawl,
a rivet passing through the first circular aperture of the first connection plate and the second round aperture of the click pawl to fasten the first connection plate and the click pawl together, and
the click pawl engaging with the click gear.
US09/738,659 2000-12-13 2000-12-13 Chair adjustment device Abandoned US20020070597A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US09/738,659 US20020070597A1 (en) 2000-12-13 2000-12-13 Chair adjustment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/738,659 US20020070597A1 (en) 2000-12-13 2000-12-13 Chair adjustment device

Publications (1)

Publication Number Publication Date
US20020070597A1 true US20020070597A1 (en) 2002-06-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
US09/738,659 Abandoned US20020070597A1 (en) 2000-12-13 2000-12-13 Chair adjustment device

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US (1) US20020070597A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040100138A1 (en) * 2002-11-27 2004-05-27 Johnson Glenn A Aircraft passenger seat with forward arm rest pivot
US20050093349A1 (en) * 2003-10-29 2005-05-05 Lear Corporation Akjustable head restraint or headrest
US20070007811A1 (en) * 2003-05-07 2007-01-11 Chung Hae I Armrest tilting device
US20070241603A1 (en) * 2004-03-05 2007-10-18 Johnson Controls Gmbh Armrest Locking Mechanism
US7458643B2 (en) 2002-11-27 2008-12-02 Be Aerospace, Inc. Aircraft passenger seat with forward arm rest pivot
US20080303335A1 (en) * 2006-06-06 2008-12-11 Van De Ven Michiel P Armrest and armrest mechanism
US20140225414A1 (en) * 2008-08-20 2014-08-14 Clerprem S.P.A. Arm-Rest Adjustable in Inclination, in Particular for Vehicles
US11731543B2 (en) * 2019-11-11 2023-08-22 Grammer Ag Motor-vehicle accessory

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7252340B2 (en) * 2002-11-27 2007-08-07 B E Aerospace, Inc. Aircraft passenger seat with forward arm rest pivot
US7458643B2 (en) 2002-11-27 2008-12-02 Be Aerospace, Inc. Aircraft passenger seat with forward arm rest pivot
US6899397B2 (en) * 2002-11-27 2005-05-31 Be Aerospace, Inc. Aircraft passenger seat with forward arm rest pivot
US20040100138A1 (en) * 2002-11-27 2004-05-27 Johnson Glenn A Aircraft passenger seat with forward arm rest pivot
US20050225147A1 (en) * 2002-11-27 2005-10-13 Be Aerospace, Inc. Aircraft passenger seat with forward arm rest pivot
CN100436191C (en) * 2003-05-07 2008-11-26 株式会社宇宝技术 Armrest tilting device
US20070007811A1 (en) * 2003-05-07 2007-01-11 Chung Hae I Armrest tilting device
US7284799B2 (en) * 2003-05-07 2007-10-23 Woobo Tech Co., Ltd. Armrest tilting device
US6942292B2 (en) * 2003-10-29 2005-09-13 Lear Corporation Adjustable head restraint or headrest
US20050093349A1 (en) * 2003-10-29 2005-05-05 Lear Corporation Akjustable head restraint or headrest
US20070241603A1 (en) * 2004-03-05 2007-10-18 Johnson Controls Gmbh Armrest Locking Mechanism
US20080303335A1 (en) * 2006-06-06 2008-12-11 Van De Ven Michiel P Armrest and armrest mechanism
US20140225414A1 (en) * 2008-08-20 2014-08-14 Clerprem S.P.A. Arm-Rest Adjustable in Inclination, in Particular for Vehicles
US9272644B2 (en) * 2008-08-20 2016-03-01 Clerprem S.P.A. Arm-rest adjustable in inclination, in particular for vehicles
US11731543B2 (en) * 2019-11-11 2023-08-22 Grammer Ag Motor-vehicle accessory

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