US20120274114A1 - Adjustment Device for Chairs - Google Patents
Adjustment Device for Chairs Download PDFInfo
- Publication number
- US20120274114A1 US20120274114A1 US13/094,816 US201113094816A US2012274114A1 US 20120274114 A1 US20120274114 A1 US 20120274114A1 US 201113094816 A US201113094816 A US 201113094816A US 2012274114 A1 US2012274114 A1 US 2012274114A1
- Authority
- US
- United States
- Prior art keywords
- tube
- adjustment device
- backrest
- telescopic post
- support
- 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
Links
- 230000000149 penetrating effect Effects 0.000 claims abstract description 12
- 230000004075 alteration Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 206010038743 Restlessness Diseases 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/20—Chairs or stools with vertically-adjustable seats
- A47C3/34—Chairs or stools with vertically-adjustable seats with pins coacting with holes or bolt-and-nut adjustment
-
- 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
- A47C1/023—Reclining or easy chairs having independently-adjustable supporting parts the parts being horizontally-adjustable seats ; Expandable seats or the like, e.g. seats with horizontally adjustable parts
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
- A47C3/20—Chairs or stools with vertically-adjustable seats
- A47C3/40—Telescopic guides
-
- 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
- A47C7/40—Support for the head or the back for the back
- A47C7/402—Support for the head or the back for the back adjustable in height
Definitions
- the invention relates to chairs, particularly to chairs with backrest and cushion height adjustment.
- a conventional adjustable chair as shown in FIG. 7 utilizes a vee support 80 for adjustably supporting a backrest 81 and cushion 82 .
- the backrest 801 and cushion 82 are slidably mounted on an upper portion 801 and lower portion 802 of the support 80 , respectively.
- This adjustable structure can satisfy different requirements of various users.
- the support 80 must occupy a specific space because of its vee shape. This may cause inconvenience for small rooms. Furthermore, the support 80 is not retractable, so the top 803 will awkwardly protrude from the backrest 81 when the backrest 81 is adjusted to a lower position. A user sitting on the chair tends to be knocked on his/her head by the protrudent support 80 , especially for restless children.
- An object of the invention is to provide an adjustment device for chairs, which can perform height adjustment of backrest without protruding the support from the backrest. This can reduce the occupying space of the chair and is advantageous to storage and transportation. Also, the abovementioned knocking-head problem can be solved.
- the adjustment device of the invention includes a support assembly, a support arm, a telescopic post and a backrest support.
- the support assembly has a tube and a fastener penetrating the tube.
- the tube is provided with a plurality of positioning holes longitudinally arranged in a row.
- An end of the support arm connects to the tube and is provided with a positioning bolt penetrating one of the positioning holes, and the other end is adapted to connect a cushion.
- the telescopic post is slidably accommodated in the tube and provided with a plurality of adjusting holes longitudinally arranged in a row for being selectively penetrated by the fastener.
- the backrest support is connected to the telescopic post for being moved with the telescopic post.
- FIG. 1 is an exploded view of the invention
- FIG. 2 is an assembled view of the invention
- FIG. 3 is a side view showing that both the cushion and backrest are adjusted to low positions
- FIG. 4 is a side view showing that both the cushion and backrest are adjusted to high positions
- FIG. 5 is a back view showing that both the cushion and backrest are adjusted to low positions
- FIG. 6 is a back view showing that both the cushion and backrest are adjusted to high positions.
- FIG. 7 shows a conventional adjustable chair.
- the invention includes a support assembly 1 .
- the support assembly 1 has a tube 11 and a fastener 2 penetrating the tube 11 .
- the tube 11 is provided with a plurality of positioning holes 111 longitudinally arranged in a row.
- the fastener 2 has a pin 20 penetrating a hollow portion 110 of the tube 11 .
- a sleeve 4 is accommodated in the hollow portion 110 of the tube 11 .
- An upper end of the sleeve 4 is formed with a flange 41 by which the sleeve 4 is hung on an upper end of the tube 11 .
- the inside of the sleeve 4 is provided with two longitudinally opposite rails 42 and a though hole 43 penetrating through the sleeve 4 and one of the rails 42 .
- the through hole 43 is corresponding to the fastener 2 in position so that the pin 20 of the fastener 2 is inserted in to the through hole 43 .
- a telescopic post 5 is retractably accommodated in the sleeve 4 .
- the telescopic post 5 is formed with two longitudinal troughs 51 for being engaged by the rails 42 . As a result, the telescopic post 5 can be telescoped in the sleeve 4 .
- One of the troughs 51 is provided with a plurality of adjusting holes 52 longitudinally arranged in a row for being selectively penetrated by the pin 20 of the fastener 2 . Once one of the adjusting holes 52 is inserted by the fastener 2 , the telescopic post 5 is firmly fixed relative to the tube 11 .
- An end of the telescopic post 5 connects a backrest support 6 for connecting a backrest 200 .
- the backrest support 6 has two opposite ends 60 , 61 . These two ends 60 , 61 are provided with a first connecting portion 600 for fastening to the telescopic post 5 and a second connecting portion 610 for linking the backrest 200 , respectively.
- the first connecting portion 600 is an elastic member made of plastic.
- the second connecting portion 610 is a pivot for angular adjustment of the backrest 200 .
- the backrest support 6 is formed with a curved portion 62 for flexibility.
- the backrest 200 By means of the curved shape of the backrest support 6 , the backrest 200 will be deformed toward the tube 11 when it is pressed. Thus the backrest 200 can flexibly support the user's back.
- the first connecting portion 600 may be further provided with a handle ring 63 , which is helpful for moving the chair.
- a lower end of the telescopic post 5 is provided with a stopper ring 7 encompassing the troughs 51 .
- the support assembly 1 is connected by a support arm 3 .
- An end of the support arm 3 is formed with a connecting ring 31 slidably around the support assembly 1 .
- the connecting ring 31 is provided with a positioning bolt 32 penetrating one of the positioning holes 111 so that a position of the support arm 3 can be changed.
- the other end of the support arm 3 is adapted to connect a cushion 100 .
- the cushion 100 is below the backrest 200 in position.
- the bottom of the support assembly 1 may be installed with a wheeled seat 300 .
- the handle ring 63 may help to move the wheeled seat 300 .
- the position of the cushion 100 connected to the support arm 3 can be adjusted by inserting the positioning bolt 32 into one of the positioning holes 111 .
- FIG. 3 shows the cushion 100 at a low position and FIG. 4 shows the cushion 100 at a high position.
- the position of the backrest 200 can be adjusted by sliding the telescopic post 5 against the sleeve 4 and inserting the fastener 2 into one of the adjusting holes 52 .
- FIG. 3 shows the backrest 200 at a low position and FIG. 4 shows the backrest 200 at a high position.
- the stopper ring 7 will be blocked by the rails 42 when the telescopic post 5 is being pulled upward for preventing the telescopic post 5 from escaping out of the rails 42 .
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
The adjustment device for chairs includes a support assembly, a support arm, a telescopic post and a backrest support. The support assembly has a tube and a fastener penetrating the tube. The tube is provided with a plurality of positioning holes longitudinally arranged in a row. An end of the support arm connects to the tube and is provided with a positioning bolt penetrating one of the positioning holes, and the other end is adapted to connect a cushion. The telescopic post is slidably accommodated in the tube and provided with a plurality of adjusting holes longitudinally arranged in a row for being selectively penetrated by the fastener. The backrest support is connected to the telescopic post for being moved with the telescopic post.
Description
- 1. Technical Field
- The invention relates to chairs, particularly to chairs with backrest and cushion height adjustment.
- 2. Related Art
- Chairs are a requirement in everyday life. Besides utility, chairs also must provide enough comfort to different users. A conventional adjustable chair as shown in
FIG. 7 utilizes avee support 80 for adjustably supporting abackrest 81 andcushion 82. Thebackrest 801 andcushion 82 are slidably mounted on anupper portion 801 andlower portion 802 of thesupport 80, respectively. This adjustable structure can satisfy different requirements of various users. - However, the
support 80 must occupy a specific space because of its vee shape. This may cause inconvenience for small rooms. Furthermore, thesupport 80 is not retractable, so thetop 803 will awkwardly protrude from thebackrest 81 when thebackrest 81 is adjusted to a lower position. A user sitting on the chair tends to be knocked on his/her head by theprotrudent support 80, especially for restless children. - An object of the invention is to provide an adjustment device for chairs, which can perform height adjustment of backrest without protruding the support from the backrest. This can reduce the occupying space of the chair and is advantageous to storage and transportation. Also, the abovementioned knocking-head problem can be solved.
- To accomplish the object, the adjustment device of the invention includes a support assembly, a support arm, a telescopic post and a backrest support. The support assembly has a tube and a fastener penetrating the tube. The tube is provided with a plurality of positioning holes longitudinally arranged in a row. An end of the support arm connects to the tube and is provided with a positioning bolt penetrating one of the positioning holes, and the other end is adapted to connect a cushion. The telescopic post is slidably accommodated in the tube and provided with a plurality of adjusting holes longitudinally arranged in a row for being selectively penetrated by the fastener. The backrest support is connected to the telescopic post for being moved with the telescopic post.
-
FIG. 1 is an exploded view of the invention; -
FIG. 2 is an assembled view of the invention; -
FIG. 3 is a side view showing that both the cushion and backrest are adjusted to low positions; -
FIG. 4 is a side view showing that both the cushion and backrest are adjusted to high positions; -
FIG. 5 is a back view showing that both the cushion and backrest are adjusted to low positions; -
FIG. 6 is a back view showing that both the cushion and backrest are adjusted to high positions; and -
FIG. 7 shows a conventional adjustable chair. - Please refer to
FIGS. 1 and 2 . The invention includes asupport assembly 1. Thesupport assembly 1 has atube 11 and afastener 2 penetrating thetube 11. Thetube 11 is provided with a plurality ofpositioning holes 111 longitudinally arranged in a row. Please further refer toFIG. 5 , thefastener 2 has apin 20 penetrating ahollow portion 110 of thetube 11. - A
sleeve 4 is accommodated in thehollow portion 110 of thetube 11. An upper end of thesleeve 4 is formed with aflange 41 by which thesleeve 4 is hung on an upper end of thetube 11. The inside of thesleeve 4 is provided with two longitudinallyopposite rails 42 and a thoughhole 43 penetrating through thesleeve 4 and one of therails 42. The throughhole 43 is corresponding to thefastener 2 in position so that thepin 20 of thefastener 2 is inserted in to the throughhole 43. Atelescopic post 5 is retractably accommodated in thesleeve 4. Thetelescopic post 5 is formed with twolongitudinal troughs 51 for being engaged by therails 42. As a result, thetelescopic post 5 can be telescoped in thesleeve 4. One of thetroughs 51 is provided with a plurality of adjustingholes 52 longitudinally arranged in a row for being selectively penetrated by thepin 20 of thefastener 2. Once one of the adjustingholes 52 is inserted by thefastener 2, thetelescopic post 5 is firmly fixed relative to thetube 11. - An end of the
telescopic post 5 connects abackrest support 6 for connecting abackrest 200. Thebackrest support 6 has twoopposite ends ends portion 600 for fastening to thetelescopic post 5 and a second connectingportion 610 for linking thebackrest 200, respectively. The first connectingportion 600 is an elastic member made of plastic. The second connectingportion 610 is a pivot for angular adjustment of thebackrest 200. Preferably, thebackrest support 6 is formed with acurved portion 62 for flexibility. - Please refer to
FIG. 6 . By means of the curved shape of thebackrest support 6, thebackrest 200 will be deformed toward thetube 11 when it is pressed. Thus thebackrest 200 can flexibly support the user's back. Preferably, the first connectingportion 600 may be further provided with ahandle ring 63, which is helpful for moving the chair. A lower end of thetelescopic post 5 is provided with astopper ring 7 encompassing thetroughs 51. - The
support assembly 1 is connected by asupport arm 3. An end of thesupport arm 3 is formed with a connectingring 31 slidably around thesupport assembly 1. The connectingring 31 is provided with apositioning bolt 32 penetrating one of thepositioning holes 111 so that a position of thesupport arm 3 can be changed. The other end of thesupport arm 3 is adapted to connect acushion 100. Thecushion 100 is below thebackrest 200 in position. - Please refer to
FIGS. 3-5 . The bottom of thesupport assembly 1 may be installed with awheeled seat 300. Thehandle ring 63 may help to move thewheeled seat 300. The position of thecushion 100 connected to thesupport arm 3 can be adjusted by inserting thepositioning bolt 32 into one of the positioning holes 111.FIG. 3 shows thecushion 100 at a low position andFIG. 4 shows thecushion 100 at a high position. The position of thebackrest 200 can be adjusted by sliding thetelescopic post 5 against thesleeve 4 and inserting thefastener 2 into one of the adjusting holes 52.FIG. 3 shows thebackrest 200 at a low position andFIG. 4 shows thebackrest 200 at a high position. Please refer toFIG. 5 , thestopper ring 7 will be blocked by therails 42 when thetelescopic post 5 is being pulled upward for preventing thetelescopic post 5 from escaping out of therails 42. - It will be appreciated by persons skilled in the art that the above embodiment has been described by way of example only and not in any limitative sense, and that various alterations and modifications are possible without departure from the scope of the invention as defined by the appended claims. It will be appreciated by persons skilled in the art that the above embodiment has been described by way of example only and not in any limitative sense, and that various alterations and modifications are possible without departure from the scope of the invention as defined by the appended claims.
Claims (10)
1. An adjustment device for chairs, comprising:
a support assembly, having a tube and a fastener penetrating the tube, and the tube being provided with a plurality of positioning holes longitudinally arranged in a row;
a support arm, an end of the support arm being connected to the tube and being provided with a positioning bolt penetrating one of the positioning holes, and the other end of the support arm being adapted to connect a cushion;
a telescopic post, slidably accommodated in the tube, being provided with a plurality of adjusting holes longitudinally arranged in a row for being selectively penetrated by the fastener; and
a backrest support connecting between a backrest and the telescopic post.
2. The adjustment device of claim 1 , wherein the support arm further comprises a connecting ring around the tube and the positioning bolt is disposed at the connecting ring.
3. The adjustment device of claim 1 , wherein a sleeve is accommodated in the tube, an end of the sleeve is formed with a flange hanging on the tube, and an inside of the sleeve is provided with two longitudinally opposite rails.
4. The adjustment device of claim 3 , wherein the telescopic post is formed with two longitudinal troughs for being engaged by the rails, and the adjusting holes are located in one of the troughs.
5. The adjustment device of claim 3 , wherein the sleeve is provided with a through hole penetrating one of the rails for being selectively penetrated by the fastener.
6. The adjustment device of claim 4 , wherein the sleeve is provided with a through hole penetrating one of the rails for being selectively penetrated by the fastener.
7. The adjustment device of claim 4 , further comprising a stopper ring at a lower end of the telescopic post for encompassing the troughs 51.
8. The adjustment device of claim 1 , wherein the backrest support has two opposite ends, the two ends are provided with a first connecting portion for fastening to the telescopic post and a second connecting portion for linking the backrest respectively, and a curved portion is formed between the first connecting portion and the second connecting portion.
9. The adjustment device of claim 8 , further comprising a handle ring on the first connecting portion.
10. The adjustment device of claim 8 , wherein the second connecting portion is a pivot rotatably connecting the backrest.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/094,816 US20120274114A1 (en) | 2011-04-26 | 2011-04-26 | Adjustment Device for Chairs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/094,816 US20120274114A1 (en) | 2011-04-26 | 2011-04-26 | Adjustment Device for Chairs |
Publications (1)
Publication Number | Publication Date |
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US20120274114A1 true US20120274114A1 (en) | 2012-11-01 |
Family
ID=47067344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/094,816 Abandoned US20120274114A1 (en) | 2011-04-26 | 2011-04-26 | Adjustment Device for Chairs |
Country Status (1)
Country | Link |
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US (1) | US20120274114A1 (en) |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4884842A (en) * | 1988-08-08 | 1989-12-05 | Sarah Finkelstein | Body supporting chair |
US4930839A (en) * | 1988-07-26 | 1990-06-05 | Soft Energy Co., Ltd. | Single-legged chair |
US5328240A (en) * | 1991-06-01 | 1994-07-12 | Sifa Sitzbabrik Gmbh | Support for a seat including a pedestal adapted to receive a vertically inclined column |
US5433552A (en) * | 1994-02-28 | 1995-07-18 | Thyu; Chorng-Thyong | Seat pillar lock device for exercising machines |
US5547253A (en) * | 1994-08-11 | 1996-08-20 | Schwartz, Deceased; Edward M. | Sit/stand adjustable, tower chair |
US5720522A (en) * | 1996-07-24 | 1998-02-24 | Habeck; John R. | Portable seat |
US5782532A (en) * | 1993-11-25 | 1998-07-21 | Opsvik; Peter | Arrangement in a chair, especially a chair for children |
US6224154B1 (en) * | 1999-07-20 | 2001-05-01 | Stanley R. Stoki | Operable chair |
US6302482B1 (en) * | 1999-01-14 | 2001-10-16 | Moll System-und Funktions-Möbel GmbH | Chair having a seat that is adjustable in a height and width |
US6752460B2 (en) * | 2002-09-20 | 2004-06-22 | Moll System- und Funktionsmöbel GmbH | Chair |
US7980519B2 (en) * | 2006-12-29 | 2011-07-19 | Chao-Ken Chen | Telescopic adjustable positioning device |
US8066624B1 (en) * | 2008-08-05 | 2011-11-29 | Stroup David K | Ergonomic exercise posture chair and method of using same |
US20120274113A1 (en) * | 2011-04-28 | 2012-11-01 | Chao-Ken Chen | Adjustable Chair |
-
2011
- 2011-04-26 US US13/094,816 patent/US20120274114A1/en not_active Abandoned
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4930839A (en) * | 1988-07-26 | 1990-06-05 | Soft Energy Co., Ltd. | Single-legged chair |
US4884842A (en) * | 1988-08-08 | 1989-12-05 | Sarah Finkelstein | Body supporting chair |
US5328240A (en) * | 1991-06-01 | 1994-07-12 | Sifa Sitzbabrik Gmbh | Support for a seat including a pedestal adapted to receive a vertically inclined column |
US5782532A (en) * | 1993-11-25 | 1998-07-21 | Opsvik; Peter | Arrangement in a chair, especially a chair for children |
US5433552A (en) * | 1994-02-28 | 1995-07-18 | Thyu; Chorng-Thyong | Seat pillar lock device for exercising machines |
US5547253A (en) * | 1994-08-11 | 1996-08-20 | Schwartz, Deceased; Edward M. | Sit/stand adjustable, tower chair |
US5720522A (en) * | 1996-07-24 | 1998-02-24 | Habeck; John R. | Portable seat |
US6302482B1 (en) * | 1999-01-14 | 2001-10-16 | Moll System-und Funktions-Möbel GmbH | Chair having a seat that is adjustable in a height and width |
US6224154B1 (en) * | 1999-07-20 | 2001-05-01 | Stanley R. Stoki | Operable chair |
US6752460B2 (en) * | 2002-09-20 | 2004-06-22 | Moll System- und Funktionsmöbel GmbH | Chair |
US7980519B2 (en) * | 2006-12-29 | 2011-07-19 | Chao-Ken Chen | Telescopic adjustable positioning device |
US8066624B1 (en) * | 2008-08-05 | 2011-11-29 | Stroup David K | Ergonomic exercise posture chair and method of using same |
US20120274113A1 (en) * | 2011-04-28 | 2012-11-01 | Chao-Ken Chen | Adjustable Chair |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |