US20100078975A1 - Structure of a single-part elastic waist support - Google Patents

Structure of a single-part elastic waist support Download PDF

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Publication number
US20100078975A1
US20100078975A1 US12/285,185 US28518508A US2010078975A1 US 20100078975 A1 US20100078975 A1 US 20100078975A1 US 28518508 A US28518508 A US 28518508A US 2010078975 A1 US2010078975 A1 US 2010078975A1
Authority
US
United States
Prior art keywords
waist support
frame
elastic waist
mesh member
back frame
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
US12/285,185
Inventor
Ming-Shiang Kang
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.)
Russell International Corp
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 US12/285,185 priority Critical patent/US20100078975A1/en
Assigned to RUSSELL INTERNATIONAL CORPORATION reassignment RUSSELL INTERNATIONAL CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KANG, MING-SHIANG
Publication of US20100078975A1 publication Critical patent/US20100078975A1/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
    • A47C7/40—Support for the head or the back for the back
    • A47C7/46—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs
    • A47C7/462—Support for the head or the back for the back with special, e.g. adjustable, lumbar region support profile; "Ackerblom" profile chairs adjustable by mechanical means

Definitions

  • the present invention relates to a single-part elastic waist support, more particularly one, which is positioned between a mesh member and a frame of a back of a chair, and can change shape according to the position and shape of the sitter's back for the sitter to be steady and comfortable.
  • Chair backs are usually made by means of wrapping leather or cloth around wooden or plastic board-shaped materials. Such chair backs are likely to make the sitters feel hot and uncomfortable, especially in summer, because air cannot travel through them.
  • Another chair back is available, which is comprised of a frame, and a highly elastic mesh secured over a space encompassed by the frame. Such mesh chair back allows air to travel through it therefore the sitter won't feel uncomfortably hot at his back even if he has been sitting on the chair for a long length of time in summer.
  • the mesh part of the chair back can change shape easily, and in turn it can't support the sitter's back in a proper position when the sitter leans back against it. Consequently, the sitter is prone to have sore waist and painful back after having been seated in the chair for a long length of time.
  • the chair back 4 consists of a board part 41 , and a mesh member 42 , and a waist support 5 is joined in the chair back 4 .
  • the waist support 5 consists of a front pad, and a main part, which has joining protrusions 51 on a rear side, and gripping portions 52 at two ends thereof.
  • the mesh member 42 consists of a frame 421 , and a mesh secured over a space encompassed by the frame 421 .
  • the board part 41 has longitudinal guide grooves 411 on a front side thereof.
  • the waist support 5 is positioned between and closely in touch with the board part 41 and the mesh member 42 with the joining protrusions 51 being embedded in the guide grooves 411 , and with the grip portions 52 sticking out from left and right sides of the chair back 4 ; thus, the waist support 5 can be adjusted in height.
  • the above chair back can support a sitter's back in a proper position owing to the waist support.
  • the chair back has the following drawbacks: the waist support comprises two separate parts, the front pad and the main part, and therefore takes some labor and time to assemble. Consequently, the manufacturing cost of the waist support is relatively high.
  • the waist support is formed with holes for air to travel through.
  • the waist support and the mesh member are a distance apart and have different curvatures. Therefore, the waist support can't support a sitter's waist effectively.
  • a waist support in accordance with an embodiment of the present invention has a relatively high elasticity, and has a joining protrusion near each of two ends thereof.
  • the chair includes a back frame, and a mesh member on a front of the back frame.
  • the back frame consists of front and rear frame parts, which are firmly joined together with a periphery of the mesh member being sandwiched between them.
  • the back frame has two opposite supporting extensions, each of which has a guiding groove thereon.
  • the waist support is positioned between the mesh member and the back frame with the joining protrusions being embedded in the guiding grooves of the back frame. Therefore, the elastic waist support will change shape to be closely in touch with the sitter's waist when the sitter presses his back against the mesh member.
  • the waist support has several holes, which can increase the elasticity of the waist support, and allow air to travel through.
  • FIG. 1 is an exploded perspective view of a waist support in the present invention
  • FIG. 2 is a sectional view of the waist support in FIG. 1 ,
  • FIG. 3 is a front view of a chair in the present invention, taken when the waist support is being adjusted in position ( 1 ),
  • FIG. 4 is a front view of a chair, taken when the waist support is being adjusted in position ( 2 ),
  • FIG. 5 is a perspective view of the chair in the invention.
  • FIG. 6 is a sectional view of the prior art.
  • a preferred embodiment of a chair back of the present invention consists of a back frame 1 , a mesh member 2 , and an elastic waist support 3 .
  • the back frame 1 consists of a front frame part 11 , and a rear frame part 12 , which have protruding portions and receiving cavities thereon, and are joined together with the protruding portions being embedded in the receiving cavities.
  • the mesh member 2 is positioned over a front side of the back frame 1 , and fixed in position with a periphery thereof being sandwiched between the front and the rear frame parts 11 and 12 .
  • the rear frame part 12 of the back frame 1 has two opposite supporting extensions 121 , which protrude from inward sides of two longitudinal parts thereof.
  • Each of the supporting extensions 121 has a guiding groove 122 thereon.
  • the elastic waist support 3 includes only one part, and has a joining protrusion 31 near each of two ends thereof, which is shorter than the guiding grooves 122 of the rear frame part 12 .
  • the elastic waist support 3 is positioned between the mesh member 2 and the front frame part 11 of the back frame 1 , and joined on the rear frame part 12 of the back frame 1 with the joining protrusions 31 being embedded in the guiding grooves 122 of the supporting extensions 121 respectively.
  • the elastic waist support 3 is positioned on a front side of the front frame part 11 and joined on the rear frame part 12 by means of making the joining protrusions 31 embedded in the guiding grooves 122 of the supporting extensions 121 of the rear frame part 12 .
  • the mesh member 2 is positioned over the front frame part 11 of the back frame 1 , and the front and the rear frame parts 11 and 12 are joined together to sandwich a periphery of the mesh member 2 between them; thus, the elastic waist support 3 exists between the mesh member 2 and the front frame part 11 of the back frame 1 .
  • the elastic waist support 3 can be moved up and down with the joining protrusions 31 changing position within the guiding grooves 122 of the rear frame part 12 .
  • the elastic waist support 3 can be adjusted in height according to the sitter's need.
  • the waist support 3 and the mesh member 2 are elastic, they can change shape to be closely in touch with the sitter's waist when the sitter rests his back on the chair back; thus, the sitter will be steady, secure and comfortable on the waist support 3 .
  • the elastic waist support 3 has several holes 32 thereon, which can increase the elasticity of the waist support 3 , and allow air to travel through the waist support 3 ; the holes 32 together form a design, and can be regularly or irregularly arranged.
  • the elastic waist support includes only one part, and can be easily joined on the back frame of the chair by embedding the joining protrusions in the guiding grooves formed on the back frame. Therefore, it takes relatively low material and labor cost to manufacture the waist support of the invention.
  • the elastic waist support can change shape to be closely in touch with the sitter's waist together with the mesh member when the sitter presses his back against the mesh member. Therefore, the sitter will be very steady, secure and comfortable on the chair with his waist being propped against the waist support.
  • the elastic waist support has several holes thereon, which can increase the elasticity of the waist support, and allow air to travel through the waist support.

Abstract

An elastic waist support is installed between a back frame and a mesh member of a chair, and can be adjusted in height; the back frame consists of a front frame part, and a rear frame part, which are firmly joined together; the mesh member covers a front side of the front frame part with a periphery thereof being sandwiched between the front and the rear frame parts; the back frame has two opposite supporting extensions protruding from inward sides of two longitudinal portions thereof; each of the supporting extensions has a guiding groove thereon; the waist support has two joining protrusions thereon, and it is joined on the back frame with the joining protrusions being respectively embedded in the guiding grooves.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the invention
  • The present invention relates to a single-part elastic waist support, more particularly one, which is positioned between a mesh member and a frame of a back of a chair, and can change shape according to the position and shape of the sitter's back for the sitter to be steady and comfortable.
  • 2. Brief Description of the Prior Art
  • Chair backs are usually made by means of wrapping leather or cloth around wooden or plastic board-shaped materials. Such chair backs are likely to make the sitters feel hot and uncomfortable, especially in summer, because air cannot travel through them. Another chair back is available, which is comprised of a frame, and a highly elastic mesh secured over a space encompassed by the frame. Such mesh chair back allows air to travel through it therefore the sitter won't feel uncomfortably hot at his back even if he has been sitting on the chair for a long length of time in summer. However, the mesh part of the chair back can change shape easily, and in turn it can't support the sitter's back in a proper position when the sitter leans back against it. Consequently, the sitter is prone to have sore waist and painful back after having been seated in the chair for a long length of time.
  • Referring to FIG. 6, yet another chair back 4 is provided to overcome the above-mentioned problem. The chair back 4 consists of a board part 41, and a mesh member 42, and a waist support 5 is joined in the chair back 4. The waist support 5 consists of a front pad, and a main part, which has joining protrusions 51 on a rear side, and gripping portions 52 at two ends thereof. The mesh member 42 consists of a frame 421, and a mesh secured over a space encompassed by the frame 421. The board part 41 has longitudinal guide grooves 411 on a front side thereof. Sleeves are sandwiched between a periphery of the board part 41 and the frame 421 of the mesh member 42, and threaded fixing elements are passed through the sleeves to secure the mesh member 42 to the board part 41. The waist support 5 is positioned between and closely in touch with the board part 41 and the mesh member 42 with the joining protrusions 51 being embedded in the guide grooves 411, and with the grip portions 52 sticking out from left and right sides of the chair back 4; thus, the waist support 5 can be adjusted in height.
  • The above chair back can support a sitter's back in a proper position owing to the waist support. However, the chair back has the following drawbacks: the waist support comprises two separate parts, the front pad and the main part, and therefore takes some labor and time to assemble. Consequently, the manufacturing cost of the waist support is relatively high. Secondly, the waist support is formed with holes for air to travel through. Thirdly, the waist support and the mesh member are a distance apart and have different curvatures. Therefore, the waist support can't support a sitter's waist effectively.
  • Therefore, it is a main object of the present invention to provide an improvement on a waist support of a chair to overcome the above problems.
    • SUMMARY OF THE INVENTION
  • A waist support in accordance with an embodiment of the present invention has a relatively high elasticity, and has a joining protrusion near each of two ends thereof. The chair includes a back frame, and a mesh member on a front of the back frame. The back frame consists of front and rear frame parts, which are firmly joined together with a periphery of the mesh member being sandwiched between them. The back frame has two opposite supporting extensions, each of which has a guiding groove thereon. The waist support is positioned between the mesh member and the back frame with the joining protrusions being embedded in the guiding grooves of the back frame. Therefore, the elastic waist support will change shape to be closely in touch with the sitter's waist when the sitter presses his back against the mesh member.
  • Moreover, the waist support has several holes, which can increase the elasticity of the waist support, and allow air to travel through.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The present invention will be better understood by referring to the accompanying drawings, wherein:
  • FIG. 1 is an exploded perspective view of a waist support in the present invention,
  • FIG. 2 is a sectional view of the waist support in FIG. 1,
  • FIG. 3 is a front view of a chair in the present invention, taken when the waist support is being adjusted in position (1),
  • FIG. 4 is a front view of a chair, taken when the waist support is being adjusted in position (2),
  • FIG. 5 is a perspective view of the chair in the invention, and
  • FIG. 6 is a sectional view of the prior art.
    •  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Referring to FIGS. 1 and 2, a preferred embodiment of a chair back of the present invention consists of a back frame 1, a mesh member 2, and an elastic waist support 3.
  • The back frame 1 consists of a front frame part 11, and a rear frame part 12, which have protruding portions and receiving cavities thereon, and are joined together with the protruding portions being embedded in the receiving cavities. The mesh member 2 is positioned over a front side of the back frame 1, and fixed in position with a periphery thereof being sandwiched between the front and the rear frame parts 11 and 12.
  • The rear frame part 12 of the back frame 1 has two opposite supporting extensions 121, which protrude from inward sides of two longitudinal parts thereof. Each of the supporting extensions 121 has a guiding groove 122 thereon.
  • The elastic waist support 3 includes only one part, and has a joining protrusion 31 near each of two ends thereof, which is shorter than the guiding grooves 122 of the rear frame part 12. The elastic waist support 3 is positioned between the mesh member 2 and the front frame part 11 of the back frame 1, and joined on the rear frame part 12 of the back frame 1 with the joining protrusions 31 being embedded in the guiding grooves 122 of the supporting extensions 121 respectively.
  • In assembly, referring to FIGS. 2 to 5, first the elastic waist support 3 is positioned on a front side of the front frame part 11 and joined on the rear frame part 12 by means of making the joining protrusions 31 embedded in the guiding grooves 122 of the supporting extensions 121 of the rear frame part 12. Next, the mesh member 2 is positioned over the front frame part 11 of the back frame 1, and the front and the rear frame parts 11 and 12 are joined together to sandwich a periphery of the mesh member 2 between them; thus, the elastic waist support 3 exists between the mesh member 2 and the front frame part 11 of the back frame 1. Therefore, the elastic waist support 3 can be moved up and down with the joining protrusions 31 changing position within the guiding grooves 122 of the rear frame part 12. In other words, the elastic waist support 3 can be adjusted in height according to the sitter's need. Moreover, because the waist support 3 and the mesh member 2 are elastic, they can change shape to be closely in touch with the sitter's waist when the sitter rests his back on the chair back; thus, the sitter will be steady, secure and comfortable on the waist support 3.
  • Furthermore, the elastic waist support 3 has several holes 32 thereon, which can increase the elasticity of the waist support 3, and allow air to travel through the waist support 3; the holes 32 together form a design, and can be regularly or irregularly arranged.
  • From the above description, it can be seen that the present invention has the following advantages over the prior art:
  • 1. The elastic waist support includes only one part, and can be easily joined on the back frame of the chair by embedding the joining protrusions in the guiding grooves formed on the back frame. Therefore, it takes relatively low material and labor cost to manufacture the waist support of the invention.
  • 2. The elastic waist support can change shape to be closely in touch with the sitter's waist together with the mesh member when the sitter presses his back against the mesh member. Therefore, the sitter will be very steady, secure and comfortable on the chair with his waist being propped against the waist support.
  • 3. The elastic waist support has several holes thereon, which can increase the elasticity of the waist support, and allow air to travel through the waist support.

Claims (2)

1. Structure of a single-part elastic waist support,
the elastic waist support being installed between a back frame and a mesh member of a chair; the back frame having two opposite supporting extensions protruding from inward portions thereof; each of the supporting extensions having a guiding groove thereon;
the elastic waist support having two joining protrusions thereon; the elastic waist support being joined on the back frame with the joining protrusions being inserted in the guiding grooves respectively;
the elastic waist support having a plurality of holes thereon.
2. The single-part elastic waist support structure as claimed in claim 1, wherein the back frame consists of a front frame part, and a rear frame part, and the mesh member covers a front of the front frame part with a portion thereof being sandwiched between the front and the rear frame parts.
US12/285,185 2008-09-30 2008-09-30 Structure of a single-part elastic waist support Abandoned US20100078975A1 (en)

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Application Number Priority Date Filing Date Title
US12/285,185 US20100078975A1 (en) 2008-09-30 2008-09-30 Structure of a single-part elastic waist support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/285,185 US20100078975A1 (en) 2008-09-30 2008-09-30 Structure of a single-part elastic waist support

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US20100078975A1 true US20100078975A1 (en) 2010-04-01

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Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015093030A (en) * 2013-11-11 2015-05-18 コクヨファニチャー株式会社 Chair
CN104665321A (en) * 2013-11-29 2015-06-03 卓嶽股份有限公司 Chair back support and adjustment structure
WO2015160693A1 (en) * 2014-04-17 2015-10-22 Hni Technologies Inc. Flex lumbar support
JP2015192920A (en) * 2015-08-10 2015-11-05 株式会社岡村製作所 Lumber support and chair including the same
JP2016093344A (en) * 2014-11-14 2016-05-26 コクヨ株式会社 Chair
US9504331B2 (en) 2007-03-13 2016-11-29 Hni Technologies Inc. Dynamic chair back lumbar support system
USD796883S1 (en) 2014-10-15 2017-09-12 Hni Technologies Inc. Chair
US9801470B2 (en) 2014-10-15 2017-10-31 Hni Technologies Inc. Molded chair with integrated support and method of making same
USD827352S1 (en) 2017-05-25 2018-09-04 Steelcase Inc. Seating arrangement
US10172465B2 (en) 2013-03-15 2019-01-08 Hni Technologies Inc. Chair with activated back flex
USD846294S1 (en) 2017-05-25 2019-04-23 Steelcase Inc. Seating arrangement
USD851418S1 (en) 2017-05-25 2019-06-18 Steelcase Inc. Seating arrangement
USD851417S1 (en) 2017-05-25 2019-06-18 Steelcase Inc. Seating arrangement
USD851952S1 (en) 2017-05-25 2019-06-25 Steelcase Inc. Seating arrangement
USD852526S1 (en) 2017-05-25 2019-07-02 Steelcase Inc. Seating arrangement
USD852524S1 (en) 2017-05-25 2019-07-02 Steelcase Inc. Seating arrangement
USD852525S1 (en) 2017-05-25 2019-07-02 Steelcase Inc. Seating arrangement
EP3539422A1 (en) * 2018-03-16 2019-09-18 Dongguan Kentec Office Seating Co., Ltd Auxiliary backrest for a chair
US10463153B2 (en) 2016-06-09 2019-11-05 Steelcase Inc. Seating arrangement
USD907383S1 (en) 2019-05-31 2021-01-12 Steelcase Inc. Chair with upholstered back
USD907935S1 (en) 2019-05-31 2021-01-19 Steelcase Inc. Chair
US10927545B2 (en) 2010-05-05 2021-02-23 Allsteel Inc. Modular wall system
US11109683B2 (en) 2019-02-21 2021-09-07 Steelcase Inc. Body support assembly and method for the use and assembly thereof
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11553797B2 (en) 2015-04-13 2023-01-17 Steelcase Inc. Seating arrangement
US11564500B1 (en) * 2021-08-04 2023-01-31 Alberto Palma Mesh chair with full lumbar back support

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Cited By (41)

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Publication number Priority date Publication date Assignee Title
US9504331B2 (en) 2007-03-13 2016-11-29 Hni Technologies Inc. Dynamic chair back lumbar support system
US10927545B2 (en) 2010-05-05 2021-02-23 Allsteel Inc. Modular wall system
US11725382B2 (en) 2010-05-05 2023-08-15 Allsteel Inc. Modular wall system
US10893752B2 (en) 2013-03-15 2021-01-19 Hni Technologies Inc. Chair with activated back flex
US10172465B2 (en) 2013-03-15 2019-01-08 Hni Technologies Inc. Chair with activated back flex
JP2015093030A (en) * 2013-11-11 2015-05-18 コクヨファニチャー株式会社 Chair
CN104665321A (en) * 2013-11-29 2015-06-03 卓嶽股份有限公司 Chair back support and adjustment structure
WO2015160693A1 (en) * 2014-04-17 2015-10-22 Hni Technologies Inc. Flex lumbar support
US10064493B2 (en) * 2014-04-17 2018-09-04 Hni Technologies Inc. Flex lumbar support
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USD796883S1 (en) 2014-10-15 2017-09-12 Hni Technologies Inc. Chair
US9801470B2 (en) 2014-10-15 2017-10-31 Hni Technologies Inc. Molded chair with integrated support and method of making same
USD833193S1 (en) 2014-10-15 2018-11-13 Artco-Bell Corporation Chair
JP2016093344A (en) * 2014-11-14 2016-05-26 コクヨ株式会社 Chair
US11553797B2 (en) 2015-04-13 2023-01-17 Steelcase Inc. Seating arrangement
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
JP2015192920A (en) * 2015-08-10 2015-11-05 株式会社岡村製作所 Lumber support and chair including the same
US11583082B2 (en) * 2016-06-09 2023-02-21 Steelcase Inc. Seating arrangement
US10463153B2 (en) 2016-06-09 2019-11-05 Steelcase Inc. Seating arrangement
US10813459B2 (en) 2016-06-09 2020-10-27 Steelcase Inc. Seating arrangement
USD827352S1 (en) 2017-05-25 2018-09-04 Steelcase Inc. Seating arrangement
USD851417S1 (en) 2017-05-25 2019-06-18 Steelcase Inc. Seating arrangement
USD876140S1 (en) 2017-05-25 2020-02-25 Steelcase Inc. Seating arrangement
USD876139S1 (en) 2017-05-25 2020-02-25 Steelcase Inc. Seating arrangement
USD852525S1 (en) 2017-05-25 2019-07-02 Steelcase Inc. Seating arrangement
USD846294S1 (en) 2017-05-25 2019-04-23 Steelcase Inc. Seating arrangement
USD851418S1 (en) 2017-05-25 2019-06-18 Steelcase Inc. Seating arrangement
USD852524S1 (en) 2017-05-25 2019-07-02 Steelcase Inc. Seating arrangement
USD852526S1 (en) 2017-05-25 2019-07-02 Steelcase Inc. Seating arrangement
USD851952S1 (en) 2017-05-25 2019-06-25 Steelcase Inc. Seating arrangement
EP3539422A1 (en) * 2018-03-16 2019-09-18 Dongguan Kentec Office Seating Co., Ltd Auxiliary backrest for a chair
US11109683B2 (en) 2019-02-21 2021-09-07 Steelcase Inc. Body support assembly and method for the use and assembly thereof
USD947559S1 (en) 2019-05-31 2022-04-05 Steelcase Inc. Chair with upholstered back
USD947560S1 (en) 2019-05-31 2022-04-05 Steelcase Inc. Chair
USD907935S1 (en) 2019-05-31 2021-01-19 Steelcase Inc. Chair
USD907383S1 (en) 2019-05-31 2021-01-12 Steelcase Inc. Chair with upholstered back
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11786039B2 (en) 2019-12-13 2023-10-17 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11805913B2 (en) 2019-12-13 2023-11-07 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11564500B1 (en) * 2021-08-04 2023-01-31 Alberto Palma Mesh chair with full lumbar back support
US20230040114A1 (en) * 2021-08-04 2023-02-09 Alberto Palma Mesh chair with full lumbar back support

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