US20140054947A1 - Backrest assembly with front and rear frames - Google Patents

Backrest assembly with front and rear frames Download PDF

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Publication number
US20140054947A1
US20140054947A1 US13591987 US201213591987A US2014054947A1 US 20140054947 A1 US20140054947 A1 US 20140054947A1 US 13591987 US13591987 US 13591987 US 201213591987 A US201213591987 A US 201213591987A US 2014054947 A1 US2014054947 A1 US 2014054947A1
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Patent type
Prior art keywords
front
annular
frame
rear
front frame
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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
US13591987
Inventor
Tung-Hua Su
Original Assignee
Tung-Hua Su
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

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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C31/00Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/02Upholstery attaching means
    • A47C31/023Upholstery attaching means connecting upholstery to frames, e.g. by hooks, clips, snap fasteners, clamping means or the like
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/36Support for the head or the back
    • A47C7/40Support for the head or the back for the back

Abstract

A backrest assembly includes a front frame having annular outer and inner peripheries. An annular lip is formed on a rear surface of the front frame and extends along the annular inner periphery of the front frame. A net is mounted to a front surface of the front frame. The front frame is received in an annular groove defined between annular inner and outer walls formed on a front face of a rear frame, with the annular inner and outer peripheries and the annular lip of the front frame located between the annular inner and outer walls of the rear frame, with the front surface of the front frame covering a front opening of the annular groove of the rear frame, with a fastener extending through each of a plurality of engaging holes of the front frame into one of the plurality of engaging holes of the rear frame.

Description

    BACKGROUND OF THE INVENTION
  • The present invention relates to a backrest assembly with front and rear frames and, more particularly, to a backrest assembly including front and rear frames that can be rapidly assembled to provide enhanced efficiency while providing reliability and an aesthetic appearance.
  • Among various backrests, a backrest of a type includes a net for ventilation and sitting comfort. In an example shown in U.S. Pat. No. 8,029,066, the backrest includes a front frame having a rear surface on which inner and outer annular flanges are formed, defining a first annular groove therebetween. Pegs are formed in the first annular groove.
  • The backrest further includes a rear frame having inner and outer annular walls on a front face thereof, with a second annular groove defined between the inner and outer annular walls. Stubs are formed in the second annular groove, with each stub having a receptacle. A net is mounted to the front frame. Each peg of the front frame is inserted into the receptacle of one of the stubs of the rear frame. A fastener is extended through each of a plurality of engaging holes of the front frame into one of a plurality of engaging holes of the rear frame, providing reliable assemblage. The fasteners can not be seen from the rear face of the rear frame to provide an aesthetic appearance.
  • However, assemblage of the stubs and the pegs is time-consuming
  • Thus, a need exists for a novel backrest assembly that can be rapidly assembled while providing reliability and an aesthetic appearance.
  • BRIEF SUMMARY OF THE INVENTION
  • An objective of the present invention is to provide a backrest assembly including front and rear frames that can be rapidly assembled while providing reliable assemblage.
  • A backrest assembly according to the present invention includes a front frame made of rigid material. The front frame is annular and includes a front surface and a rear surface opposite to the front surface. The front frame further includes an annular outer periphery extending between the front and rear surfaces. The front frame further includes an annular inner periphery extending between the front and rear surfaces and surrounded by the annular outer periphery. An annular lip is formed on the rear surface and extends along the annular inner periphery of the front frame. The annular lip includes a plurality of engaging holes. A net made of flexible material is mounted to the front surface of the front frame. A rear frame is made of rigid material and includes a front face and a rear face opposite to the front face. An annular outer wall and an annular inner wall are formed on the front face of the rear frame. An annular groove is defined between the annular outer wall and the annular inner wall. The annular groove receives the front frame and includes a front opening facing away from the rear face. The annular inner wall includes a plurality of engaging holes. The front frame is inserted into the annular groove of the rear frame via the front opening, with the annular inner and outer peripheries and the annular lip of the front frame located between the annular inner and outer walls of the rear frame, with the front surface of the front frame covering the front opening of the annular groove of the rear frame, with the plurality of engaging holes of the front frame aligned with the plurality of engaging holes of the rear frame, with a fastener extending through each of the plurality of engaging holes of the front frame into one of the plurality of engaging holes of the rear frame, preventing the front frame from disengaging from the rear frame.
  • An annular outer edge of the net can be folded back to cover an annular edge portion of the rear surface of the front frame. A plurality of nails is extended through the annular outer edge portion of the net into the rear surface of the front frame. The net is sandwiched between the annular outer periphery of the front frame and an annular inner face of the annular outer wall of the rear frame.
  • The present invention will become clearer in light of the following detailed description of illustrative embodiments of this invention described in connection with the drawings.
  • DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows an exploded, perspective view of a backrest assembly according to the present invention.
  • FIG. 2 shows a perspective view of a net and a front frame of the backrest assembly of FIG. 1.
  • FIG. 3 shows a perspective view of the backrest assembly of FIG. 1 after assemblage.
  • FIG. 4 shows a cross sectional view taken along section line A-A in FIG. 3.
  • FIG. 5 shows a cross sectional view taken along section line B-B in FIG. 3.
  • FIG. 6 shows a cross sectional view taken along section line C-C in FIG. 3.
  • DETAILED DESCRIPTION OF THE INVENTION
  • With reference to FIGS. 1-6, a backrest assembly according to the present invention includes a front frame 1, a net 2, a rear frame 3, and a plurality of fasteners 4. The front frame 1 is made of rigid material and is annular. The front frame 1 includes a front surface 11 and a rear surface 12 opposite to the front surface 11. The front frame 1 further includes an annular outer periphery 121 extending between the front and rear surfaces 11 and 12. The front frame 11 further includes an annular inner periphery 122 extending between the front and rear surfaces 11 and 12 and surrounded by the annular outer periphery 121. An annular lip 13 is formed on the rear surface 12 and extends along the annular inner periphery 122 of the front frame 11. The annular lip 13 includes a plurality of engaging holes 14, with each engaging hole 14 extending along an axis parallel to and spaced from the front surface 11.
  • The net 2 is made of flexible material. The net 2 is mounted to the front surface 11 of the front frame 1. An annular outer edge of the net 2 is folded back to cover an annular edge portion of the rear surface 12 of the front frame 1. Nails 22 are extended through the annular outer edge portion of the net 2 into the rear surface 12 of the front frame 1. The net 2 is in a tightened state after assemblage.
  • The rear frame 3 is made of rigid material and includes a front face and a rear face 30 opposite to the front face. An annular outer wall 32 and an annular inner wall 33 are formed on the front face of the rear frame 3, with an annular groove 31 defined between the annular outer wall 32 and the annular inner wall 33. The annular groove 31 includes a front opening 34 facing away from the rear face 30. The annular inner wall 33 includes a plurality of engaging holes 35. With reference to FIGS. 5 and 6, each of the annular outer and inner walls 32 and 33 of the rear frame 3 is high enough to cover the annular outer and inner peripheries 121 and 122 of the front frame 1.
  • The fasteners 4 extend through the engaging holes 14 of the front frame 1 and the engaging holes 35 of the rear frame 3 to enhance assembling reliability.
  • With reference to FIGS. 3-6, after fixing the net 2 to the front frame 1, the front frame 1 is inserted into the annular groove 31 of the rear frame 3 via the front opening 34, with the annular inner and outer peripheries 122 and 121 and the annular lip 13 of the front frame 1 located between the annular inner and outer walls 33 and 32 of the rear frame 3, with the front surface 11 of the front frame 1 covering the front opening 34 of the annular groove 31 of the rear frame 3, with the engaging holes 14 of the front frame 1 aligned with the engaging holes 35 of the rear frame 3, with the net 2 sandwiched between the annular outer periphery 121 of the front frame 1 and an annular inner face of the annular outer wall 32 of the rear frame 3. Each fastener 4 extends through one of the engaging holes 14 of the front frame 1 into one of the engaging holes 35 of the rear frame 3, preventing the front frame 1 from disengaging from the rear frame 3 to achieve assembling reliability. Thus, the front and rear frames 1 and 3 can be rapidly assembled with each other. The fasteners 4 are fixed in the annular inner wall 33 of the rear frame 3, not exposed outside of the annular inner wall 33, providing an aesthetic appearance for the backrest, as shown in FIGS. 5 and 6.
  • The assembling speed and efficiency of the front and rear frames 1 and 3 of the backrest according to the present invention can be enhanced to provide reliability and an aesthetic appearance.
  • Although specific embodiments have been illustrated and described, numerous modifications and variations are still possible without departing from the essence of the invention. The scope of the invention is limited by the accompanying claims.

Claims (2)

  1. 1. A backrest assembly comprising:
    a front frame made of rigid material, with the front frame being annular and including a front surface and a rear surface opposite to the front surface, with the front frame further including an annular outer periphery extending between the front and rear surfaces, with the front frame further including an annular inner periphery extending between the front and rear surfaces and surrounded by the annular outer periphery, with an annular lip formed on the rear surface and extending along the annular inner periphery of the front frame, with the annular lip including a plurality of engaging holes;
    a net made of flexible material, with the net mounted to the front surface of the front frame;
    a rear frame made of rigid material, with the rear frame including a front face and a rear face opposite to the front face, with an annular outer wall and an annular inner wall formed on the front face of the rear frame, with an annular groove defined between the annular outer wall and the annular inner wall, with the annular groove receiving the front frame and including a front opening facing away from the rear face, with the annular inner wall including a plurality of engaging holes; and
    a plurality of fasteners,
    with the front frame inserted into the annular groove of the rear frame via the front opening, with the annular inner and outer peripheries and the annular lip of the front frame located between the annular inner and outer walls of the rear frame, with the front surface of the front frame covering the front opening of the annular groove of the rear frame, with the plurality of engaging holes of the front frame aligned with the plurality of engaging holes of the rear frame, with each of the plurality of fasteners extending through one of the plurality of engaging holes of the front frame into one of the plurality of engaging holes of the rear frame, preventing the front frame from disengaging from the rear frame.
  2. 2. The backrest assembly as claimed in claim 1, with an annular outer edge of the net folded back to cover an annular edge portion of the rear surface of the front frame, with a plurality of nails extended through the annular outer edge portion of the net into the rear surface of the front frame, with the net sandwiched between the annular outer periphery of the front frame and an annular inner face of the annular outer wall of the rear frame.
US13591987 2012-08-22 2012-08-22 Backrest assembly with front and rear frames Abandoned US20140054947A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13591987 US20140054947A1 (en) 2012-08-22 2012-08-22 Backrest assembly with front and rear frames

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US13591987 US20140054947A1 (en) 2012-08-22 2012-08-22 Backrest assembly with front and rear frames

Publications (1)

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US20140054947A1 true true US20140054947A1 (en) 2014-02-27

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US13591987 Abandoned US20140054947A1 (en) 2012-08-22 2012-08-22 Backrest assembly with front and rear frames

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Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6375269B1 (en) * 1997-11-25 2002-04-23 Ts Tech Co., Ltd. Seat having seating face made of sheet resilient material
US6378944B1 (en) * 2000-03-29 2002-04-30 Koenig + Neurath Ag Seat and/or back of seat cover for a chair
US20020084687A1 (en) * 2000-04-18 2002-07-04 Gaylord Robert A. Sling chair
US20040124689A1 (en) * 2002-07-23 2004-07-01 Okumura Corporation Structure for mounting a net member to a frame for a seat or backrest of a chair
US7066550B1 (en) * 2005-05-10 2006-06-27 Tung-Hua Su Seat assembly for chair
US7152929B2 (en) * 2005-04-20 2006-12-26 Comfordy Co., Ltd. Structure of a double-mesh seat of a chair
US20070228799A1 (en) * 2006-03-28 2007-10-04 Kokuyo Furniture Co., Ltd. Chair
US20070267911A1 (en) * 2006-03-28 2007-11-22 Kokuyo Furniture Co., Ltd. Chair
US20080079307A1 (en) * 2006-09-30 2008-04-03 Tung-Hua Su Chair Backrest
US20080157580A1 (en) * 2006-12-29 2008-07-03 Peter Lin Body-supporting device
US7568768B1 (en) * 2008-07-15 2009-08-04 Chueng Shine Co., Ltd. Chair having elastic cords
US7594700B2 (en) * 1992-06-15 2009-09-29 Herman Miller, Inc. Contoured seating structure
US8029066B2 (en) * 2009-09-28 2011-10-04 Tung-Hua Su Backrest assembly
US8109576B2 (en) * 2010-01-25 2012-02-07 Uei Yuang Enterprise Co., Ltd. Seat assembly
US8616655B2 (en) * 2008-09-19 2013-12-31 Duoback Korea Co., Ltd. Assembly of mesh cushion in a mesh chair and assembling method thereof

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7594700B2 (en) * 1992-06-15 2009-09-29 Herman Miller, Inc. Contoured seating structure
US6375269B1 (en) * 1997-11-25 2002-04-23 Ts Tech Co., Ltd. Seat having seating face made of sheet resilient material
US6378944B1 (en) * 2000-03-29 2002-04-30 Koenig + Neurath Ag Seat and/or back of seat cover for a chair
US20020084687A1 (en) * 2000-04-18 2002-07-04 Gaylord Robert A. Sling chair
US20040124689A1 (en) * 2002-07-23 2004-07-01 Okumura Corporation Structure for mounting a net member to a frame for a seat or backrest of a chair
US7152929B2 (en) * 2005-04-20 2006-12-26 Comfordy Co., Ltd. Structure of a double-mesh seat of a chair
US7066550B1 (en) * 2005-05-10 2006-06-27 Tung-Hua Su Seat assembly for chair
US20070228799A1 (en) * 2006-03-28 2007-10-04 Kokuyo Furniture Co., Ltd. Chair
US20070267911A1 (en) * 2006-03-28 2007-11-22 Kokuyo Furniture Co., Ltd. Chair
US20080079307A1 (en) * 2006-09-30 2008-04-03 Tung-Hua Su Chair Backrest
US7425039B2 (en) * 2006-12-29 2008-09-16 Peter Lin Body-supporting device
US20080157580A1 (en) * 2006-12-29 2008-07-03 Peter Lin Body-supporting device
US7568768B1 (en) * 2008-07-15 2009-08-04 Chueng Shine Co., Ltd. Chair having elastic cords
US8616655B2 (en) * 2008-09-19 2013-12-31 Duoback Korea Co., Ltd. Assembly of mesh cushion in a mesh chair and assembling method thereof
US8029066B2 (en) * 2009-09-28 2011-10-04 Tung-Hua Su Backrest assembly
US8109576B2 (en) * 2010-01-25 2012-02-07 Uei Yuang Enterprise Co., Ltd. Seat assembly

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