US20240156265A1 - Seating structure having a support pocket - Google Patents
Seating structure having a support pocket Download PDFInfo
- Publication number
- US20240156265A1 US20240156265A1 US18/508,030 US202318508030A US2024156265A1 US 20240156265 A1 US20240156265 A1 US 20240156265A1 US 202318508030 A US202318508030 A US 202318508030A US 2024156265 A1 US2024156265 A1 US 2024156265A1
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- US
- United States
- Prior art keywords
- suspension member
- layer
- seating structure
- frame
- support pad
- 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.)
- Pending
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- 239000000725 suspension Substances 0.000 claims abstract description 176
- 238000012876 topography Methods 0.000 claims abstract description 15
- 210000000115 thoracic cavity Anatomy 0.000 claims description 24
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 235000004443 Ricinus communis Nutrition 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000003484 anatomy Anatomy 0.000 description 1
- 210000001217 buttock Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003692 ilium Anatomy 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 210000002414 leg Anatomy 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
Classifications
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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
- A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
-
- 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
- A47C7/02—Seat parts
- A47C7/14—Seat parts of adjustable shape; elastically mounted ; adaptable to a user contour or ergonomic seating positions
-
- 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
- A47C7/02—Seat parts
- A47C7/28—Seat parts with tensioned springs, e.g. of flat type
- A47C7/282—Seat parts with tensioned springs, e.g. of flat type with mesh-like supports, e.g. elastomeric membranes
-
- 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
-
- 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 seating structures such as task or office chairs. More particularly, the present invention relates to seating structures having suspension members or materials.
- the disclosure provides a seating structure including a frame and a suspension member.
- the frame defines an opening.
- the suspension member is coupled to the frame and spans over the opening.
- the suspension member is configured to engage a user and has a three-dimensional topography independent of the frame and relative to a straight reference line that extends between opposing sides of the frame.
- the disclosure provides a seating structure including a base, a backrest supported by the base, a suspension member, a pocket defined in the suspension member, and a support pad.
- the backrest includes a frame that defines an opening.
- the suspension member is coupled to the frame and spans over the opening.
- the pocket is defined in the suspension member.
- the support pad is received in the pocket.
- the disclosure provides a seating structure including a frame, a suspension member, and a support pad.
- the frame defines an opening.
- the suspension member is coupled to the frame and spans over the opening.
- the suspension member includes a first tensile member that provides a first tensile force in the suspension member and a second tensile member that provides a second tensile force in the suspension member.
- the support pad is supported on the suspension member between the first tensile member and the second tensile member.
- FIG. 1 is a perspective view of a seating structure including a seat and a backrest according to some embodiments.
- FIG. 2 is an enlarged view of a portion of a suspension material for use with the seating structure shown in FIG. 1 .
- FIG. 3 is an enlarged view of a portion of another suspension material for use with the seating structure shown in FIG. 1 .
- FIG. 4 is a schematic view of the backrest including pockets for the seating structure shown in FIG. 1 .
- FIG. 5 is a rear view of the backrest.
- FIG. 6 is a front view of the backrest.
- FIG. 7 A is a front view of a thoracic support pad for the backrest.
- FIG. 7 B is a front view of a lumbar support pad for the backrest.
- FIG. 8 is schematic, side cross-sectional view of the backrest.
- FIG. 9 A is a cross-sectional view of the backrest of FIG. 6 taken along line A-A.
- FIG. 9 B is a cross-sectional view of the backrest of FIG. 6 taken along line B-B.
- FIG. 10 A is a front view of a suspension member including a pocket.
- FIG. 10 B is a rear view of the suspension member and pocket of FIG. 10 A .
- FIG. 11 A is a front view of another suspension member including a pocket.
- FIG. 11 B is a rear view of the suspension member and pocket of FIG. 11 A .
- FIG. 12 is a front view of another suspension member including a pocket.
- FIG. 13 is a front view of another suspension member including a pocket.
- Seating structures may include any structure used to support a body of a user, for example, without limitation, task chairs, side chairs, sofas, airplane seats, vehicle seats, bicycle seats, boat seats, beds, dental and medical seats and beds, auditorium and educational seats, etc. It should be understood that the various methods and devices disclosed herein may be applied to seating structures other than a seat and/or backrest, including for example and without limitation armrests, headrests and other ergonomic positioning features. Although the illustrated embodiments are shown in connection with an office chair, other embodiments can include different configurations.
- FIG. 1 shows an exemplary embodiment of a seating structure 10 , such as a chair.
- the illustrated embodiment is only one example of a configuration of a chair.
- the chair may have other shapes and/or configurations.
- the seating structure 10 may also be a different type of furniture item, such as a bench, sofa, settee, chaise, ottoman, bed, cot, and the like.
- the seating structure 10 is an office chair.
- the seating structure 10 includes a seat 14 , a backrest 18 , and a base 22 .
- the seating structure 10 includes armrests 20 .
- the seating structure 10 may not include armrests.
- the base 22 includes a tilt mechanism 26 , a support column 30 coupled to and supporting the tilt mechanism 26 , and a base structure 34 coupled to and supporting the support column 30 .
- the seat 14 and/or backrest 18 may be rigidly coupled to the support column 30 or base 22 .
- the base 22 includes five feet 23 surrounding a central hub. Each of the feet 23 is coupled to a castor wheel 24 .
- the base 22 may include glides instead of castor wheels.
- the base 22 may include a plurality of legs. In such embodiments, the support column 30 and/or the tilt mechanism 26 may be omitted.
- the seat 14 includes a frame 38 a , a suspension member 42 a , and a carrier 46 a .
- the carrier 46 a retains the suspension member 42 a and connects to the frame 38 a .
- the suspension member 42 a may be directly coupled to the frame 38 a .
- the frame 38 a defines an opening, and the suspension member 42 a spans over the opening.
- the suspension member 42 a is configured to engage and support a weight of a user.
- the suspension member 42 a may be formed of a single jersey knit structure.
- the suspension member 42 a may be formed of a double jersey knit structure.
- the suspension member 42 a may be formed of both a single jersey and a double jersey knit structure.
- the suspension member 42 a may be formed of another type of knit structure.
- the suspension member 42 a may be formed of a woven structure.
- the backrest 18 includes a frame 38 b , a suspension member 42 b , and a carrier 46 b .
- the carrier 46 b retains the suspension member 42 b and connects to the frame 38 b .
- the suspension member 42 b extends across the frame 38 b to support a user on the seating structure 10 .
- the suspension member 42 b may be directly coupled to the frame 38 b .
- the frame 38 b defines an opening, and the suspension member 42 b spans over the opening.
- the suspension member 42 b is configured to engage and support a back of a user.
- the suspension member 42 b may be formed of a single jersey knit structure. In other embodiments, the suspension member 42 b may be formed of a double jersey knit structure. In further embodiments, the suspension member 42 b may be formed of both a single jersey and a double jersey knit structure. In yet further embodiments, the suspension member 42 b may be formed of another type of knit structure. In still other embodiments, the suspension member 42 b may be formed of a woven structure.
- FIG. 2 illustrates a single jersey knit and tunnel inlay structures 50 a , 50 b of the suspension members 42 a , 42 b .
- Each single jersey knit structure 50 a , 50 b has one or more multifilaments 54 a , 54 b and one or more monofilaments 58 a , 58 b .
- the single jersey knit structure may include a plurality of multifilaments.
- the single jersey knit structure may include a plurality of monofilaments.
- Each of the multifilaments 54 a , 54 b forms a respective one of the jersey knit structures and has a plurality of courses extending in a course direction C and a plurality of wales extending in a wale direction W.
- the monofilaments 58 a , 58 b correspond to and are inlaid in a respective one of the courses.
- the monofilaments 58 a , 58 b extend in the course direction C.
- every course includes an inlaid one of the monofilaments 58 a , 58 b .
- only some of the courses may include an inlaid one of the monofilaments 58 a , 58 b .
- the monofilaments 58 a , 58 b may be inlaid in the wales and may extend in the wale direction W.
- FIG. 3 illustrates another knit structure 70 of a suspension member 74 .
- the suspension member 74 is similar to the suspension members 42 a , 42 b discussed above and includes one or more multifilaments 78 , 82 and one or more monofilaments 86 .
- the suspension member 74 may be used to form either a seat or a backrest.
- the suspension member 74 has a double jersey interlock knit structure with a tunnel inlay.
- the double jersey interlock structure is formed from one of each of the multifilaments 78 , 82 and a monofilament 86 tunnel inlay forms a respective one of the jersey knit structures and has a plurality of courses extending in a course direction C and a plurality of wales extending in a wale direction W.
- the monofilaments 58 a , 58 b correspond to and are inlaid in a respective one of the courses.
- the monofilaments 58 a , 58 b extend in the course direction C. In the illustrated embodiment, every course includes an inlaid one of the monofilaments 58 a , 58 b .
- only some of the courses may include an inlaid one of the monofilaments 58 a , 58 b .
- the monofilaments 58 a , 58 b may be inlaid in the wales and may extend in the wale direction W.
- the backrest 18 includes one or more pockets 90 , 102 defined in the suspension member 42 b .
- the illustrated backrest 18 includes two pockets 90 , 102 .
- the backrest 18 may include fewer or more pockets.
- the backrest 18 may include a single pocket or may include three or more pockets.
- Each pocket 90 , 102 is configured to receive an object, such as a support pad, to provide targeted support to a user in the seating structure 10 .
- the first pocket 90 is an upper pocket
- the second pocket 102 is a lower pocket such that the first pocket 90 and the second pocket 102 are spaced apart from each other.
- Each of the upper pocket 90 and the lower pocket 102 is configured to receive a support pad 94 , 122 ( FIGS. 7 A and 7 B ), as will be described in more detail below.
- the upper pocket 90 may receive a thoracic support pad 94
- the lower pocket 102 may receive a lumber support pad 122 .
- the upper pocket 90 and the lower pocket 102 are formed in the suspension member 42 b between a top end 106 and a bottom end 110 of the backrest 18 and along the center of the suspension member 42 b . More specifically, the upper pocket 90 is located in the suspension member 42 b adjacent the top end 106 of the backrest 18 . As such, the upper pocket 90 may be positioned between shoulder blades of a user supported in the seating structure 10 .
- the lower pocket 102 is located in the suspension member 42 b between the upper pocket 90 and the bottom end 110 of the backrest 18 . As such, the lower pocket 102 may be located adjacent to the lower spine of a user supported in the seating structure 10 . In the other embodiments, the pockets 90 , 102 may be located elsewhere within the periphery of the frame 38 b.
- the illustrated suspension member 42 b includes a first layer 114 and a second layer 118 .
- the first layer 114 is provided in front of the second layer 118 such that the first layer 114 faces and contacts a user supported in the seating structure 10 , and the second layer 118 faces away from a user supported in the seating structure 10 .
- the first layer 114 may also be referred to as a front layer, and the second layer 118 may also be referred to as a rear layer.
- the pockets 90 , 102 are defined between the first layer 114 and the second layer 118 .
- the first and second layers 114 , 118 may span an entirety of the suspension member 42 b .
- the suspension member 42 b may only have two layers in certain areas, such as the areas of the pockets 90 , 102 .
- the suspension member 42 b may not include the second layer 118 in locations within the suspension member 42 b that do not form the pockets 90 , 102 . That is, the suspension member 42 b may only include the second layer 118 at locations where the pockets 90 , 102 are present.
- the first layer 114 spans the entirety of the suspension member 42 b , and the second layer 118 is located only near the pockets 90 , 102 .
- the second layer 118 may span the entirety of the suspension member 42 b , and the first layer 114 may be located only near the pockets 90 , 102 .
- the suspension member 42 b includes one or more monofilaments 98 at the location of each of the pockets 90 , 102 .
- the monofilaments 98 may be inlaid in the knit structure of the suspension member 42 b , as described above.
- the first layer 114 of the suspension member 42 b includes the monofilaments 98 .
- the second layer 118 may not include monofilaments 98 at the locations of the pockets 90 , 102 .
- the second layer 114 may include the monofilaments 98 at the locations of the pockets 90 , 102 , and the first layer 114 may not include the monofilaments.
- both the first layer 114 and the second layer 118 may include the monofilaments 98 at the locations of the pockets 90 , 102 .
- the second layer 118 is sewn to the first layer 114 of the suspension member 42 b to form the pockets 90 , 102 in the suspension member 42 b .
- the second layer 118 is separately formed and then attached to the first layer 114 .
- the second layer 118 may be formed simultaneously (i.e., integrally) with the first layer 114 of the suspension member 42 b .
- the suspension member 42 b may be formed through 3-D Flatbed knitting with two layers to form the pockets 90 , 102 .
- the second layer 118 may be machine knit with the first layer 114 of the suspension member 42 b such that the pockets 90 , 102 are integrally formed with the suspension member 42 b .
- the second layer 118 may be attached to the first layer 114 using other suitable means (e.g., weaving, adhesives, staples, etc.).
- the first and second layers 114 , 118 may be formed of single jersey structure, a double jersey structure, a double jersey interlock structure, or another similar jersey knit structure.
- FIGS. 7 A and 7 B illustrate the support pads 94 , 122 .
- the first support pad 94 is a thoracic support pad that provides support at the neck and between the shoulders of a user supported in the seating structure 10 .
- the second support pad 122 is a lumbar support pad that provides support at the lower back of a user supported in the seating structure 10 .
- the thoracic support pad 94 and the lumbar support pad 122 may be inserted into the pockets 90 , 102 during the manufacturing process such that the thoracic support pad 94 and the lumbar support pad 122 are not removable from the pockets 90 , 102 once manufacturing is complete.
- the pockets 94 , 102 may be provided with slits or openings that enable a user to install and/or remove the thoracic support pad 94 and the lumbar support pad 122 from the pockets 90 , 102 after manufacturing is complete.
- the support pads 94 , 122 are supported on backrest 18 without having to be connected to the frame 38 b , tilt mechanism 26 , or other structure of the seating structure 10 .
- FIG. 7 A illustrates the thoracic support pad 94 .
- the thoracic support pad 94 includes an upper section 94 a and a lower section 94 b .
- the upper section 94 a is wider than the lower section 94 b .
- FIG. 7 B illustrates the lumbar support pad 122 .
- the lumbar support pad 122 may be substantially similar to the thoracic support pad 94 of FIG. 7 A .
- the lumbar support pad 122 also includes an upper section 122 a and a lower section 122 b .
- the upper section 122 a of the lumbar support pad 122 is thinner than the lower section 122 b of the lumbar support pad 122 in the illustrated embodiment.
- the thoracic support pad 94 , the lumbar support pad 122 , or both supports 94 , 122 may be shaped differently to cater to the individual needs of a user.
- the thoracic support pad 94 additionally incudes a thoracic connecting bar 126 that connects the upper section 94 a and the lower section 94 b of the thoracic support pad 94 .
- the lumbar support pad 122 additionally includes a lumbar connecting bar 130 that connects the upper section 122 a and the lower section 122 b of the lumbar support pad 122 .
- the thoracic connecting bar 126 and the lumbar connecting bar 130 are curved.
- the thoracic connecting bar 126 may enable flex and rotation of the thoracic support pad 94 within the upper pocket 90 .
- the lumbar connecting bar 130 may enable flex and rotation of the lumbar support pad 122 within the lower pocket 102 .
- FIGS. 7 A and 7 B illustrate only one example of a thoracic support pad and a lumbar support pad.
- the support pads may have other configurations.
- the support pads may only have one section and no connecting bars.
- the support pads may have more than two sections and multiple connecting bars.
- Each support pad may also have a different shape and/or size, depending on a user's preferences and application.
- the support pads may also be completely redesigned to support other areas of a user's anatomy (e.g., hip, buttocks, shoulders, neck, etc.). Regardless of the configuration, the support pads are generally thin members that are more rigid than the suspension member. The support pads, however, have suitable thicknesses to alter a topography of the suspension member.
- each support pad may have a thickness of at least 1 inch.
- the support pads deform or reshape areas of the suspension member when inserted into a pocket.
- the support pads may have planar, curved (e.g., concave, convex, etc.), undulated, or other shaped surfaces that face a user to provide a desired support effect.
- FIG. 8 illustrates a schematic view of the frame 38 b and the suspension member 42 b for the backrest 18 .
- the suspension member 42 b is configured to engage a user.
- the illustrated suspension member 42 b also has a three-dimensional topography relative to a straight reference line A 1 that extends between opposing sides of the frame 38 b .
- the frame 38 b may define the straight reference line A 1 between the opposing sides of the frame 38 b through any given cross-section of the frame 38 b .
- the straight reference line A 1 extends between a right side and a left side of the frame 38 b from the perspective of a user supported in the seating structure 10 .
- a suspension member would extend straight across the frame 38 b directly along the straight reference line A 1 at any given cross-section (depending on the shape of the frame 38 b ).
- the illustrated suspension member 42 b protrudes toward and/or away from the reference line A 1 to create, or form, the three-dimensional topography relative to the straight reference line A 1 .
- the suspension member 42 b includes portions that extend toward the straight reference line A 1 and portions that extends away from the straight reference line A 1 .
- the illustrated suspension member 42 b includes at least one portion that extends across the straight reference line A 1 at a location disposed within the frame 38 b .
- the at least one portion that extends across the straight reference line A 1 is not located at the frame 38 b (i.e., not at the location of connection between the frame 38 b and the suspension member 42 b ).
- a first section of the suspension member 42 b is positioned on a first side of the straight reference line A 1 (e.g., a user-facing side of the straight reference line A 1 )
- a second section of the suspension member 42 b is positioned on a second side of the straight reference line A 1 (e.g., a rearward-facing side of the straight reference line A 1 ).
- the suspension member 42 b may extend across the straight reference line A 1 at multiple points such that the multiple sections of the suspension member 42 b are positioned on each side of the straight reference line A 1 . In other embodiments, the suspension member 42 b may be positioned entirely on one side of the straight reference line (due to the shape of the frame 38 b ), but the suspension member 42 b may still have a three-dimensional topography that extends toward and away from the suspension member 42 b independent of the frame 38 b.
- the three-dimensional topography of the suspension member 42 b is formed independently of the frame 38 b .
- the three-dimensional topography is independent of the frame 38 b .
- the portions of the suspension member 42 b that extend away from the straight reference line A 1 and the portions of the suspension member 42 b that extend toward the straight reference line A 1 do not depend on the shape of the frame 38 b .
- the profile of a suspension member is defined solely by the shape of a frame or a structure attached to the frame (e.g., a lumbar support pad) that pushes against or pulls the suspension member. That is, the profile of a suspension member in prior art seating structures can only be varied by changing the shape of the frame.
- a profile of the suspension member 42 b (e.g., the portions extending toward and away from the straight reference line A 1 ) may be created relative to both the frame 38 b and the straight reference line A 1 without directly interacting with the frame.
- the three-dimensional topography of the suspension member 42 b includes protruding portions, one or more first recesses 138 , and one or more second recesses 142 .
- the protruding portions are formed, at least partially, by the thoracic support pad 94 and the lumbar support pad 122 .
- the support pads 94 , 122 result in a portion of the suspension member 42 b that protrudes from the straight reference line A 1 toward a user supported in the seating structure 10 .
- the thoracic support pad 94 and the lumbar support pad 122 cause the first layer 114 of the pockets 90 , 102 to protrude, or project, from the straight reference line A 1 toward a user supported in the seating structure 10 .
- the support pads 94 , 122 expand the respective pocket 90 , 102 by at least one inch (e.g., in a front-to-rear direction). In other embodiments, the support pads 94 , 122 may expand the respective pocket by a smaller or greater distance, depending on the thicknesses of the support pads 94 , 122 .
- the thoracic support pad 94 and the lumbar support pad 122 are supported by tensions within the suspension member 42 b , as will be described in more detail, and neither the thoracic support pad 94 nor the lumbar support pad 122 is directly connected to the frame 38 b . As such, the support pads 94 , 122 create the protruding portions independently of the frame 38 b.
- the first recesses 138 and the second recesses 142 are formed by how the first layer 114 is connected to the second layer 118 .
- the second layer 118 may be connected to the first layer 144 at first stitchings 144 a and at second stitchings 144 b .
- the second layer 118 may be connected to the first layer 114 in other ways (e.g., knits, adhesives, etc.) to form the recesses 138 , 142 .
- the first stitchings 144 a may form the first recesses 138
- the second stitchings 144 b may form the second recesses 142 .
- Each of the first stitching 144 a and the second stitching 144 b applies tension to the first layer 114 that causes a corresponding portion of the first layer 114 of the suspension member 42 b to protrude, or project, from the straight reference line A 1 away from a user supported in the seating structure 10 .
- Neither of the stitchings 144 a , 144 b is directly connected to or engaged with the frame 38 b . Therefore, the stitchings 144 a , 144 b create the recess 138 , 142 independently of the frame 38 b.
- Each of the illustrated first recesses 138 extends linearly and adjacent to the upper pocket 90 along one side of the upper pocket 90 .
- the first recesses 138 are configured to receive bone protuberances from a user supported in the seating structure 10 . More specifically, the first recesses 138 receive the shoulder blades from a user supported in the seating structure 10 .
- Each of the illustrated second recesses 142 along one side of the lower pocket 102 .
- the second recesses 142 are also configured to receive bone protuberances from a user supported in the seating structure 10 . More specifically, the second recesses 142 receive portions of a user's ilium supported in the seating structure 10 .
- the recesses 138 , 142 may have other configurations.
- the recesses 138 , 142 may be non-linear (e.g., curved, wavy, zig-zagged, etc.).
- the suspension member 42 b may also include additional or alternative recesses located in other locations on the backrest 18 .
- the suspension member 42 a may include one or more recesses to provide relief for a user seated on the seat 14 .
- the suspension member 42 may include one or more pockets that receive support pads to provide additional support in targeted areas for a user seated on the seat 14 .
- the first layer 114 is stretched across the frame 38 b of the backrest 18 and provides a first tension T 1 for the suspension member 42 b .
- the first layer 114 may also be referred to as a first tensile element that provides a first tensile force T 1 in the suspension member 42 b .
- the first tension T 1 is at least partially directed toward a center of the backrest 18 and at least partially directed toward a user-supported side of the suspension member 42 b .
- the second layer 118 provides a second tension T 2 for the backrest 18 .
- the second layer 118 may also be referred to as a second tensile element that provides a second tensile force T 2 in the suspension member 42 b .
- the second tension T 2 is at least partially directed toward the center of the backrest 18 and at least partially directed away from a user-supported side of the suspension member 42 b .
- the suspension member 42 b additionally has a third tension T 3 directed toward a respective side of the frame 38 b in areas of the suspension member 42 b where the pockets 90 , 102 are not located.
- the tensions T 1 , T 2 , T 3 advantageously provide support for the support pads 94 , 122 within the pockets 90 , 102 such that the support pads 94 , 122 are supported on the suspension member 42 b independent of the frame 38 b.
- the tensions T 1 , T 2 , T 3 are described herein with respect to a y-axis and an x-axis.
- the y-axis extends toward and away from a user.
- the x-axis extends from a left side of the frame 38 b to a right side of the frame 38 b (and vice versa).
- the first tension T 1 includes a y component and an x component
- the second tension T 2 includes a y component and an x component.
- the y component of the first tension T 1 and the y component of the second tension T 2 are equal and extend opposite from one another along the y-axis.
- the y components of the first tension T 1 and the second tension T 2 balance each other such that the suspension member 42 b is in equilibrium along the y-axis.
- the x component of the first tension T 1 and the x component of the second tension T 2 extend the same way along the x-axis, but may be equal to each other or different than each other.
- the third tension T 3 extends opposite from the x component of the first tension T 1 and the x component of the second tension T 2 along the x-axis and is equal to the sum of the x component of the first tension T 1 and the second tension T 2 .
- the third tension T 3 and the x components of the first tension T 1 and the second tension T 2 balance each other such that the suspension member 42 is in equilibrium along the x-axis.
- the third tension T 3 may also have a relatively small y component that balances the y components of the first tension T 1 and the second tension T 2 . Therefore, the tensions T 1 , T 2 , T 3 are provided such that the suspension member 42 b has negligible residual stresses and forces.
- FIGS. 10 A and 10 B illustrate another embodiment of a suspension member 146 for the backrest 18 that forms the pockets 90 , 102 of FIG. 4 .
- the suspension member 146 may be substantially similar to the suspension member 42 b of FIG. 4 except for the differences described below.
- the suspension member 146 includes a first layer 150 , as illustrated in FIG. 10 A , and a second layer 154 , as illustrated in FIG. 10 B .
- the first layer 150 includes a tunnel inlay of monofilaments 158 .
- the second layer 154 includes two incision slits 162 that overlap opposing ends of the monofilaments 158 in the first layer 114 .
- the incision slits 162 form a loop 164 in the second layer 154 of the suspension member 146 .
- the loop 164 enables retention of the support pad 94 of FIG. 7 A between the first layer 150 and the second layer 154 of the suspension member 146 .
- FIGS. 11 A and 11 B illustrate another embodiment of a suspension member 166 for the backrest 18 that forms the pockets 90 , 102 of FIG. 4 .
- the suspension member 166 may be substantially similar to the suspension member 42 b of FIG. 4 except for the differences described below.
- the suspension member 166 includes a first layer 170 , as illustrated in FIG. 11 A , and a second layer 174 , as illustrated in FIG. 11 B .
- the first layer 170 includes outer portions 170 a and a central portion 170 b positioned between the outer portions 170 a
- the second layer 174 includes outer portions 174 a and a central portion 174 b positioned between the outer portions 174 a .
- the central portion 170 b includes a tunnel inlay of monofilaments 182 while the outer portions 170 a do not include monofilaments 182 .
- the central portion 174 b does not include monofilaments 182 while the outer portions 174 a each include a tunnel inlay of monofilaments 182 .
- the central portion 174 b of the second layer 174 includes a slit 186 .
- the support pad 94 may be inserted into the slit 186 to position and retain the support pad 94 between the first layer 170 and the second layer 174 of the suspension member 166 .
- FIG. 12 illustrates another embodiment of a second layer 190 for the suspension member 42 b .
- the second layer 190 is described with reference to the suspension member 42 b of FIG. 4 , but the second layer 190 may be provided with any of the suspension members 42 b , 146 , 166 described herein.
- the second layer 190 may be substantially similar to the second layer 118 of FIG. 5 except for the differences described below.
- the second layer 190 includes first and second longitudinally extending slots 194 a , 194 b .
- the support pad 94 may be inserted through the first and second longitudinally extending slots 194 a , 194 b along an insertion direction A 2 .
- the insertion direction A 2 is defined such that the support pad 94 may be inserted into the first longitudinally extending slot 194 a from an exterior side of the second layer 190 that faces away from the first layer 114 of the suspension member 42 b ( FIG. 5 ).
- the support pad 94 extends from the first slot 194 a to the second slot 194 b along an interior side of the second layer 190 that faces the first layer 114 of the suspension member 42 b ( FIG. 5 ) such that the support pad 94 is retained between the first layer 114 ( FIG. 5 ) and the second layer 190 .
- FIG. 13 illustrates another embodiment of a second layer 198 for the suspension member 42 b .
- the second layer 198 is described with reference to the suspension member 42 b of FIG. 5 , but the second layer 198 may be formed with or attached to the first layer 114 of any of the suspension members 42 b , 146 , 166 described herein.
- the second layer 198 may be substantially similar to the second layer 118 of FIG. 5 except for the differences described below.
- the second layer 198 includes a rectangular window 202 and monofilaments 206 that extend across the window 202 .
- the support pad 94 may extend partially out of the window 202 .
- the monofilaments 206 provide support for the support pad 94 and may inhibit the support pad 94 from moving out of the window 202 .
- suspension member 42 b has been described with respect to multiple embodiments, the suspension members 42 b are not limited to the embodiments described herein. Further, each embodiment of the suspension members 42 b described herein may include any of the features described with respect to any of the other embodiments of the suspension members 42 b.
- the support pads are not directly connected to the frames of the corresponding chairs. Instead, the support pads are directly supported by the suspension members and are only indirectly connected to the frames through the suspension members. As such, the chairs do not need to include any additional arms, beams, struts, or other structures extending from the frames to support and locate the support pads against the suspension members, like in conventional task chairs.
- the support pads can, thereby, be positioned anywhere on a backrest or seat without depending on a nearby frame to support the support pads. Positioning the support pads in different locations allows the suspension members to exhibit different 3-D topographies relative to the frames, as described above, without requiring structures from the frames to push or pull the suspension members in different directions.
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Abstract
A seating structure including a frame, a suspension member, and a support pad. The frame defines an opening. The suspension member is coupled to the frame and spans over the opening. The suspension member is configured to engage a user and has a three-dimensional topography independent of the frame and relative to a straight reference line that extends between opposing sides of the frame.
Description
- This application claims priority to U.S. Provisional Application No. 63/424,743, filed Nov. 11, 2022, the entire contents of which are incorporated by reference herein.
- The present invention relates to seating structures such as task or office chairs. More particularly, the present invention relates to seating structures having suspension members or materials.
- In one aspect, the disclosure provides a seating structure including a frame and a suspension member. The frame defines an opening. The suspension member is coupled to the frame and spans over the opening. The suspension member is configured to engage a user and has a three-dimensional topography independent of the frame and relative to a straight reference line that extends between opposing sides of the frame.
- In another aspect, the disclosure provides a seating structure including a base, a backrest supported by the base, a suspension member, a pocket defined in the suspension member, and a support pad. The backrest includes a frame that defines an opening. The suspension member is coupled to the frame and spans over the opening. The pocket is defined in the suspension member. The support pad is received in the pocket.
- In another aspect, the disclosure provides a seating structure including a frame, a suspension member, and a support pad. The frame defines an opening. The suspension member is coupled to the frame and spans over the opening. The suspension member includes a first tensile member that provides a first tensile force in the suspension member and a second tensile member that provides a second tensile force in the suspension member. The support pad is supported on the suspension member between the first tensile member and the second tensile member.
- Other aspects of the invention will become apparent by consideration of the detailed description and accompanying drawings.
-
FIG. 1 is a perspective view of a seating structure including a seat and a backrest according to some embodiments. -
FIG. 2 is an enlarged view of a portion of a suspension material for use with the seating structure shown inFIG. 1 . -
FIG. 3 is an enlarged view of a portion of another suspension material for use with the seating structure shown inFIG. 1 . -
FIG. 4 is a schematic view of the backrest including pockets for the seating structure shown inFIG. 1 . -
FIG. 5 is a rear view of the backrest. -
FIG. 6 is a front view of the backrest. -
FIG. 7A is a front view of a thoracic support pad for the backrest. -
FIG. 7B is a front view of a lumbar support pad for the backrest. -
FIG. 8 is schematic, side cross-sectional view of the backrest. -
FIG. 9A is a cross-sectional view of the backrest ofFIG. 6 taken along line A-A. -
FIG. 9B is a cross-sectional view of the backrest ofFIG. 6 taken along line B-B. -
FIG. 10A is a front view of a suspension member including a pocket. -
FIG. 10B is a rear view of the suspension member and pocket ofFIG. 10A . -
FIG. 11A is a front view of another suspension member including a pocket. -
FIG. 11B is a rear view of the suspension member and pocket ofFIG. 11A . -
FIG. 12 is a front view of another suspension member including a pocket. -
FIG. 13 is a front view of another suspension member including a pocket. - Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways.
- Various exemplary embodiments are related to seating structures and methods of manufacturing seating structures. Seating structures may include any structure used to support a body of a user, for example, without limitation, task chairs, side chairs, sofas, airplane seats, vehicle seats, bicycle seats, boat seats, beds, dental and medical seats and beds, auditorium and educational seats, etc. It should be understood that the various methods and devices disclosed herein may be applied to seating structures other than a seat and/or backrest, including for example and without limitation armrests, headrests and other ergonomic positioning features. Although the illustrated embodiments are shown in connection with an office chair, other embodiments can include different configurations.
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FIG. 1 shows an exemplary embodiment of aseating structure 10, such as a chair. The illustrated embodiment is only one example of a configuration of a chair. The chair may have other shapes and/or configurations. Theseating structure 10 may also be a different type of furniture item, such as a bench, sofa, settee, chaise, ottoman, bed, cot, and the like. In the illustrated embodiment, theseating structure 10 is an office chair. - The
seating structure 10 includes aseat 14, abackrest 18, and abase 22. In the illustrated embodiment, theseating structure 10 includesarmrests 20. In other embodiments, theseating structure 10 may not include armrests. Thebase 22 includes atilt mechanism 26, asupport column 30 coupled to and supporting thetilt mechanism 26, and abase structure 34 coupled to and supporting thesupport column 30. In other embodiments, theseat 14 and/orbackrest 18 may be rigidly coupled to thesupport column 30 orbase 22. In the illustrated embodiment, thebase 22 includes fivefeet 23 surrounding a central hub. Each of thefeet 23 is coupled to acastor wheel 24. In some embodiments, thebase 22 may include glides instead of castor wheels. In other embodiments, thebase 22 may include a plurality of legs. In such embodiments, thesupport column 30 and/or thetilt mechanism 26 may be omitted. - The
seat 14 includes aframe 38 a, asuspension member 42 a, and acarrier 46 a. Thecarrier 46 a retains thesuspension member 42 a and connects to theframe 38 a. In other embodiments, thesuspension member 42 a may be directly coupled to theframe 38 a. Theframe 38 a defines an opening, and thesuspension member 42 a spans over the opening. Thesuspension member 42 a is configured to engage and support a weight of a user. In some embodiments, thesuspension member 42 a may be formed of a single jersey knit structure. In other embodiments, thesuspension member 42 a may be formed of a double jersey knit structure. In further embodiments, thesuspension member 42 a may be formed of both a single jersey and a double jersey knit structure. In yet further embodiments, thesuspension member 42 a may be formed of another type of knit structure. In still other embodiments, thesuspension member 42 a may be formed of a woven structure. - Likewise, the
backrest 18 includes aframe 38 b, asuspension member 42 b, and acarrier 46 b. In some embodiments, only one suspension member and one frame may be used to form a continuous seat and backrest. In the illustrated embodiment, thecarrier 46 b retains thesuspension member 42 b and connects to theframe 38 b. Thesuspension member 42 b extends across theframe 38 b to support a user on theseating structure 10. In other embodiments, thesuspension member 42 b may be directly coupled to theframe 38 b. Theframe 38 b defines an opening, and thesuspension member 42 b spans over the opening. Thesuspension member 42 b is configured to engage and support a back of a user. In some embodiments, thesuspension member 42 b may be formed of a single jersey knit structure. In other embodiments, thesuspension member 42 b may be formed of a double jersey knit structure. In further embodiments, thesuspension member 42 b may be formed of both a single jersey and a double jersey knit structure. In yet further embodiments, thesuspension member 42 b may be formed of another type of knit structure. In still other embodiments, thesuspension member 42 b may be formed of a woven structure. -
FIG. 2 illustrates a single jersey knit andtunnel inlay structures suspension members jersey knit structure more monofilaments multifilaments monofilaments monofilaments monofilaments monofilaments monofilaments -
FIG. 3 illustrates anotherknit structure 70 of a suspension member 74. The suspension member 74 is similar to thesuspension members more monofilaments 86. The suspension member 74 may be used to form either a seat or a backrest. Unlike the suspension member 42 discussed above, the suspension member 74 has a double jersey interlock knit structure with a tunnel inlay. The double jersey interlock structure is formed from one of each of themultifilaments monofilaments monofilaments monofilaments monofilaments monofilaments - As illustrated in
FIG. 4 , thebackrest 18 includes one ormore pockets suspension member 42 b. The illustratedbackrest 18 includes twopockets backrest 18 may include fewer or more pockets. For example, thebackrest 18 may include a single pocket or may include three or more pockets. Eachpocket seating structure 10. In the illustrated embodiment, thefirst pocket 90 is an upper pocket, and thesecond pocket 102 is a lower pocket such that thefirst pocket 90 and thesecond pocket 102 are spaced apart from each other. Each of theupper pocket 90 and thelower pocket 102 is configured to receive asupport pad 94, 122 (FIGS. 7A and 7B ), as will be described in more detail below. For example, theupper pocket 90 may receive athoracic support pad 94, and thelower pocket 102 may receive alumber support pad 122. Theupper pocket 90 and thelower pocket 102 are formed in thesuspension member 42 b between atop end 106 and abottom end 110 of thebackrest 18 and along the center of thesuspension member 42 b. More specifically, theupper pocket 90 is located in thesuspension member 42 b adjacent thetop end 106 of thebackrest 18. As such, theupper pocket 90 may be positioned between shoulder blades of a user supported in theseating structure 10. Thelower pocket 102 is located in thesuspension member 42 b between theupper pocket 90 and thebottom end 110 of thebackrest 18. As such, thelower pocket 102 may be located adjacent to the lower spine of a user supported in theseating structure 10. In the other embodiments, thepockets frame 38 b. - As illustrated in
FIGS. 5 and 6 , the illustratedsuspension member 42 b includes afirst layer 114 and asecond layer 118. In the illustrated embodiment, thefirst layer 114 is provided in front of thesecond layer 118 such that thefirst layer 114 faces and contacts a user supported in theseating structure 10, and thesecond layer 118 faces away from a user supported in theseating structure 10. Thefirst layer 114 may also be referred to as a front layer, and thesecond layer 118 may also be referred to as a rear layer. Thepockets first layer 114 and thesecond layer 118. In some embodiments, the first andsecond layers suspension member 42 b. In other embodiments, thesuspension member 42 b may only have two layers in certain areas, such as the areas of thepockets suspension member 42 b may not include thesecond layer 118 in locations within thesuspension member 42 b that do not form thepockets suspension member 42 b may only include thesecond layer 118 at locations where thepockets first layer 114 spans the entirety of thesuspension member 42 b, and thesecond layer 118 is located only near thepockets second layer 118 may span the entirety of thesuspension member 42 b, and thefirst layer 114 may be located only near thepockets - The
suspension member 42 b includes one ormore monofilaments 98 at the location of each of thepockets monofilaments 98 may be inlaid in the knit structure of thesuspension member 42 b, as described above. In the illustrated embodiment, thefirst layer 114 of thesuspension member 42 b includes themonofilaments 98. In some embodiments, thesecond layer 118 may not includemonofilaments 98 at the locations of thepockets second layer 114 may include themonofilaments 98 at the locations of thepockets first layer 114 may not include the monofilaments. In still other embodiments, both thefirst layer 114 and thesecond layer 118 may include themonofilaments 98 at the locations of thepockets - In the illustrated embodiment, the
second layer 118 is sewn to thefirst layer 114 of thesuspension member 42 b to form thepockets suspension member 42 b. Specifically, thesecond layer 118 is separately formed and then attached to thefirst layer 114. In some embodiments, thesecond layer 118 may be formed simultaneously (i.e., integrally) with thefirst layer 114 of thesuspension member 42 b. For example, thesuspension member 42 b may be formed through 3-D Flatbed knitting with two layers to form thepockets second layer 118 may be machine knit with thefirst layer 114 of thesuspension member 42 b such that thepockets suspension member 42 b. In other embodiments, thesecond layer 118 may be attached to thefirst layer 114 using other suitable means (e.g., weaving, adhesives, staples, etc.). In any of the embodiments disclosed herein, the first andsecond layers -
FIGS. 7A and 7B illustrate thesupport pads first support pad 94 is a thoracic support pad that provides support at the neck and between the shoulders of a user supported in theseating structure 10. Thesecond support pad 122 is a lumbar support pad that provides support at the lower back of a user supported in theseating structure 10. In some embodiments, thethoracic support pad 94 and thelumbar support pad 122 may be inserted into thepockets thoracic support pad 94 and thelumbar support pad 122 are not removable from thepockets pockets thoracic support pad 94 and thelumbar support pad 122 from thepockets support pads pockets support pads backrest 18 without having to be connected to theframe 38 b,tilt mechanism 26, or other structure of theseating structure 10. -
FIG. 7A illustrates thethoracic support pad 94. Thethoracic support pad 94 includes anupper section 94 a and alower section 94 b. In the illustrated embodiment, theupper section 94 a is wider than thelower section 94 b.FIG. 7B illustrates thelumbar support pad 122. Thelumbar support pad 122 may be substantially similar to thethoracic support pad 94 ofFIG. 7A . Thelumbar support pad 122 also includes anupper section 122 a and alower section 122 b. However, theupper section 122 a of thelumbar support pad 122 is thinner than thelower section 122 b of thelumbar support pad 122 in the illustrated embodiment. In some embodiments, thethoracic support pad 94, thelumbar support pad 122, or bothsupports - With continued reference to
FIGS. 7A and 7B , thethoracic support pad 94 additionally incudes a thoracic connectingbar 126 that connects theupper section 94 a and thelower section 94 b of thethoracic support pad 94. Thelumbar support pad 122 additionally includes alumbar connecting bar 130 that connects theupper section 122 a and thelower section 122 b of thelumbar support pad 122. In the illustrated embodiment, the thoracic connectingbar 126 and thelumbar connecting bar 130 are curved. When thethoracic support pad 94 is secured, or retained, in theupper pocket 90, the thoracic connectingbar 126 may enable flex and rotation of thethoracic support pad 94 within theupper pocket 90. When thelumbar support pad 122 is secured, or retained, in thelower pocket 102, thelumbar connecting bar 130 may enable flex and rotation of thelumbar support pad 122 within thelower pocket 102. -
FIGS. 7A and 7B illustrate only one example of a thoracic support pad and a lumbar support pad. In other embodiments, the support pads may have other configurations. For example, the support pads may only have one section and no connecting bars. Alternatively, the support pads may have more than two sections and multiple connecting bars. Each support pad may also have a different shape and/or size, depending on a user's preferences and application. The support pads may also be completely redesigned to support other areas of a user's anatomy (e.g., hip, buttocks, shoulders, neck, etc.). Regardless of the configuration, the support pads are generally thin members that are more rigid than the suspension member. The support pads, however, have suitable thicknesses to alter a topography of the suspension member. For example, in some embodiments, each support pad may have a thickness of at least 1 inch. As such, the support pads deform or reshape areas of the suspension member when inserted into a pocket. The support pads may have planar, curved (e.g., concave, convex, etc.), undulated, or other shaped surfaces that face a user to provide a desired support effect. -
FIG. 8 illustrates a schematic view of theframe 38 b and thesuspension member 42 b for thebackrest 18. Thesuspension member 42 b is configured to engage a user. The illustratedsuspension member 42 b also has a three-dimensional topography relative to a straight reference line A1 that extends between opposing sides of theframe 38 b. With additional reference toFIGS. 9A and 9B , theframe 38 b may define the straight reference line A1 between the opposing sides of theframe 38 b through any given cross-section of theframe 38 b. Specifically, the straight reference line A1 extends between a right side and a left side of theframe 38 b from the perspective of a user supported in theseating structure 10. Typically, a suspension member would extend straight across theframe 38 b directly along the straight reference line A1 at any given cross-section (depending on the shape of theframe 38 b). The illustratedsuspension member 42 b, however, protrudes toward and/or away from the reference line A1 to create, or form, the three-dimensional topography relative to the straight reference line A1. Specifically, in the illustrated embodiment, thesuspension member 42 b includes portions that extend toward the straight reference line A1 and portions that extends away from the straight reference line A1. Further, the illustratedsuspension member 42 b includes at least one portion that extends across the straight reference line A1 at a location disposed within theframe 38 b. The at least one portion that extends across the straight reference line A1 is not located at theframe 38 b (i.e., not at the location of connection between theframe 38 b and thesuspension member 42 b). In such an arrangement, a first section of thesuspension member 42 b is positioned on a first side of the straight reference line A1 (e.g., a user-facing side of the straight reference line A1), and a second section of thesuspension member 42 b is positioned on a second side of the straight reference line A1 (e.g., a rearward-facing side of the straight reference line A1). In some embodiments, thesuspension member 42 b may extend across the straight reference line A1 at multiple points such that the multiple sections of thesuspension member 42 b are positioned on each side of the straight reference line A1. In other embodiments, thesuspension member 42 b may be positioned entirely on one side of the straight reference line (due to the shape of theframe 38 b), but thesuspension member 42 b may still have a three-dimensional topography that extends toward and away from thesuspension member 42 b independent of theframe 38 b. - The three-dimensional topography of the
suspension member 42 b is formed independently of theframe 38 b. In other words, the three-dimensional topography is independent of theframe 38 b. For example, the portions of thesuspension member 42 b that extend away from the straight reference line A1 and the portions of thesuspension member 42 b that extend toward the straight reference line A1 do not depend on the shape of theframe 38 b. In prior art seating structures, the profile of a suspension member is defined solely by the shape of a frame or a structure attached to the frame (e.g., a lumbar support pad) that pushes against or pulls the suspension member. That is, the profile of a suspension member in prior art seating structures can only be varied by changing the shape of the frame. Even if the suspension member in the prior art seating structure does not extend directly along the straight reference line A1, the profile of the suspension member still follows the shape of the frame. In the illustrated embodiment, a profile of thesuspension member 42 b (e.g., the portions extending toward and away from the straight reference line A1) may be created relative to both theframe 38 b and the straight reference line A1 without directly interacting with the frame. - In the illustrated embodiment, the three-dimensional topography of the
suspension member 42 b includes protruding portions, one or morefirst recesses 138, and one or moresecond recesses 142. The protruding portions are formed, at least partially, by thethoracic support pad 94 and thelumbar support pad 122. When thethoracic support pad 94 is provided in theupper pocket 90 and thelumbar support pad 122 is provided in thelower pocket 102, thesupport pads suspension member 42 b that protrudes from the straight reference line A1 toward a user supported in theseating structure 10. More specifically, thethoracic support pad 94 and thelumbar support pad 122 cause thefirst layer 114 of thepockets seating structure 10. In the illustrated embodiment, thesupport pads respective pocket support pads support pads thoracic support pad 94 and thelumbar support pad 122 are supported by tensions within thesuspension member 42 b, as will be described in more detail, and neither thethoracic support pad 94 nor thelumbar support pad 122 is directly connected to theframe 38 b. As such, thesupport pads frame 38 b. - The first recesses 138 and the
second recesses 142 are formed by how thefirst layer 114 is connected to thesecond layer 118. For example, with reference toFIGS. 5 and 6 , thesecond layer 118 may be connected to the first layer 144 atfirst stitchings 144 a and atsecond stitchings 144 b. In other embodiments, thesecond layer 118 may be connected to thefirst layer 114 in other ways (e.g., knits, adhesives, etc.) to form therecesses first stitchings 144 a may form thefirst recesses 138, and thesecond stitchings 144 b may form thesecond recesses 142. Each of thefirst stitching 144 a and thesecond stitching 144 b applies tension to thefirst layer 114 that causes a corresponding portion of thefirst layer 114 of thesuspension member 42 b to protrude, or project, from the straight reference line A1 away from a user supported in theseating structure 10. Neither of thestitchings frame 38 b. Therefore, thestitchings recess frame 38 b. - Each of the illustrated first recesses 138 extends linearly and adjacent to the
upper pocket 90 along one side of theupper pocket 90. The first recesses 138 are configured to receive bone protuberances from a user supported in theseating structure 10. More specifically, thefirst recesses 138 receive the shoulder blades from a user supported in theseating structure 10. Each of the illustratedsecond recesses 142 along one side of thelower pocket 102. The second recesses 142 are also configured to receive bone protuberances from a user supported in theseating structure 10. More specifically, thesecond recesses 142 receive portions of a user's ilium supported in theseating structure 10. In other embodiments, therecesses recesses suspension member 42 b may also include additional or alternative recesses located in other locations on thebackrest 18. - Although the three-
dimensional suspension member 42 b is described with reference to thebackrest 18, similar features may also be applied to thesuspension member 42 a of theseat 14. For example, thesuspension member 42 a may include one or more recesses to provide relief for a user seated on theseat 14. In addition, the suspension member 42 may include one or more pockets that receive support pads to provide additional support in targeted areas for a user seated on theseat 14. - In the illustrated embodiment, providing the
first layer 114 withmonofilaments 98 enables a manufacturer to provide thesuspension member 42 b with pre-tension to help create the three-dimensional topography without including additional frame members. With reference toFIGS. 8-9B , thefirst layer 114 is stretched across theframe 38 b of thebackrest 18 and provides a first tension T1 for thesuspension member 42 b. As such, thefirst layer 114 may also be referred to as a first tensile element that provides a first tensile force T1 in thesuspension member 42 b. In the illustrated embodiment, the first tension T1 is at least partially directed toward a center of thebackrest 18 and at least partially directed toward a user-supported side of thesuspension member 42 b. Thesecond layer 118 provides a second tension T2 for thebackrest 18. As such, thesecond layer 118 may also be referred to as a second tensile element that provides a second tensile force T2 in thesuspension member 42 b. In the illustrated embodiment with thesecond layer 118 provided at a central area of thebackrest 18, the second tension T2 is at least partially directed toward the center of thebackrest 18 and at least partially directed away from a user-supported side of thesuspension member 42 b. Thesuspension member 42 b additionally has a third tension T3 directed toward a respective side of theframe 38 b in areas of thesuspension member 42 b where thepockets support pads pockets support pads suspension member 42 b independent of theframe 38 b. - The tensions T1, T2, T3 are described herein with respect to a y-axis and an x-axis. In the illustrated embodiment, the y-axis extends toward and away from a user. With respect to the
frame 38 b, the x-axis extends from a left side of theframe 38 b to a right side of theframe 38 b (and vice versa). In the illustrated embodiment, the first tension T1 includes a y component and an x component, and the second tension T2 includes a y component and an x component. In the illustrated embodiment, the y component of the first tension T1 and the y component of the second tension T2 are equal and extend opposite from one another along the y-axis. As such, the y components of the first tension T1 and the second tension T2 balance each other such that thesuspension member 42 b is in equilibrium along the y-axis. In the illustrated embodiment, the x component of the first tension T1 and the x component of the second tension T2 extend the same way along the x-axis, but may be equal to each other or different than each other. The third tension T3 extends opposite from the x component of the first tension T1 and the x component of the second tension T2 along the x-axis and is equal to the sum of the x component of the first tension T1 and the second tension T2. As such, the third tension T3 and the x components of the first tension T1 and the second tension T2 balance each other such that the suspension member 42 is in equilibrium along the x-axis. The third tension T3 may also have a relatively small y component that balances the y components of the first tension T1 and the second tension T2. Therefore, the tensions T1, T2, T3 are provided such that thesuspension member 42 b has negligible residual stresses and forces. -
FIGS. 10A and 10B illustrate another embodiment of asuspension member 146 for thebackrest 18 that forms thepockets FIG. 4 . Thesuspension member 146 may be substantially similar to thesuspension member 42 b ofFIG. 4 except for the differences described below. Thesuspension member 146 includes afirst layer 150, as illustrated inFIG. 10A , and asecond layer 154, as illustrated inFIG. 10B . Thefirst layer 150 includes a tunnel inlay ofmonofilaments 158. Thesecond layer 154 includes twoincision slits 162 that overlap opposing ends of themonofilaments 158 in thefirst layer 114. The incision slits 162 form a loop 164 in thesecond layer 154 of thesuspension member 146. The loop 164 enables retention of thesupport pad 94 ofFIG. 7A between thefirst layer 150 and thesecond layer 154 of thesuspension member 146. -
FIGS. 11A and 11B illustrate another embodiment of asuspension member 166 for thebackrest 18 that forms thepockets FIG. 4 . Thesuspension member 166 may be substantially similar to thesuspension member 42 b ofFIG. 4 except for the differences described below. Thesuspension member 166 includes afirst layer 170, as illustrated inFIG. 11A , and asecond layer 174, as illustrated inFIG. 11B . At the location of thepockets first layer 170 includesouter portions 170 a and acentral portion 170 b positioned between theouter portions 170 a, and thesecond layer 174 includesouter portions 174 a and acentral portion 174 b positioned between theouter portions 174 a. In thefirst layer 170, thecentral portion 170 b includes a tunnel inlay ofmonofilaments 182 while theouter portions 170 a do not includemonofilaments 182. In thesecond layer 174, thecentral portion 174 b does not includemonofilaments 182 while theouter portions 174 a each include a tunnel inlay ofmonofilaments 182. Thecentral portion 174 b of thesecond layer 174 includes aslit 186. Thesupport pad 94 may be inserted into theslit 186 to position and retain thesupport pad 94 between thefirst layer 170 and thesecond layer 174 of thesuspension member 166. -
FIG. 12 illustrates another embodiment of asecond layer 190 for thesuspension member 42 b. For the sake of the brevity, thesecond layer 190 is described with reference to thesuspension member 42 b ofFIG. 4 , but thesecond layer 190 may be provided with any of thesuspension members second layer 190 may be substantially similar to thesecond layer 118 ofFIG. 5 except for the differences described below. Thesecond layer 190 includes first and second longitudinally extendingslots support pad 94 may be inserted through the first and second longitudinally extendingslots support pad 94 may be inserted into the first longitudinally extendingslot 194 a from an exterior side of thesecond layer 190 that faces away from thefirst layer 114 of thesuspension member 42 b (FIG. 5 ). As thesupport pad 94 is inserted into the first longitudinally extendingslot 194 a, thesupport pad 94 extends from thefirst slot 194 a to thesecond slot 194 b along an interior side of thesecond layer 190 that faces thefirst layer 114 of thesuspension member 42 b (FIG. 5 ) such that thesupport pad 94 is retained between the first layer 114 (FIG. 5 ) and thesecond layer 190. -
FIG. 13 illustrates another embodiment of a second layer 198 for thesuspension member 42 b. For the sake of the brevity, the second layer 198 is described with reference to thesuspension member 42 b ofFIG. 5 , but the second layer 198 may be formed with or attached to thefirst layer 114 of any of thesuspension members second layer 118 ofFIG. 5 except for the differences described below. The second layer 198 includes arectangular window 202 andmonofilaments 206 that extend across thewindow 202. When the second layer 198 is attached tofirst layer 114 of thesuspension member 42 b, thesupport pad 94 may extend partially out of thewindow 202. Themonofilaments 206 provide support for thesupport pad 94 and may inhibit thesupport pad 94 from moving out of thewindow 202. - Although the
suspension member 42 b has been described with respect to multiple embodiments, thesuspension members 42 b are not limited to the embodiments described herein. Further, each embodiment of thesuspension members 42 b described herein may include any of the features described with respect to any of the other embodiments of thesuspension members 42 b. - In each of the above example embodiments, the support pads are not directly connected to the frames of the corresponding chairs. Instead, the support pads are directly supported by the suspension members and are only indirectly connected to the frames through the suspension members. As such, the chairs do not need to include any additional arms, beams, struts, or other structures extending from the frames to support and locate the support pads against the suspension members, like in conventional task chairs. The support pads can, thereby, be positioned anywhere on a backrest or seat without depending on a nearby frame to support the support pads. Positioning the support pads in different locations allows the suspension members to exhibit different 3-D topographies relative to the frames, as described above, without requiring structures from the frames to push or pull the suspension members in different directions.
- Various features and advantages of the invention are set forth in the following claims.
Claims (20)
1. A seating structure comprising:
a frame defining an opening; and
a suspension member coupled to the frame and spanning over the opening, the suspension member configured to engage a user and having a three-dimensional topography independent of the frame and relative to a straight reference line that extends between opposing sides of the frame.
2. The seating structure of claim 1 , wherein the three-dimensional topography includes a recess that projects away from the user engaging the suspension member.
3. The seating structure of claim 1 , wherein the three-dimensional topography includes a protruding portion that projects toward the user engaging the suspension member.
4. The seating structure of claim 3 , wherein a support pad is supported on the suspension member, and wherein the support pad forms the protruding portion.
5. The seating structure of claim 4 , wherein the support pad is not directly connected to the frame.
6. The seating structure of claim 1 , wherein the frame is part of a backrest.
7. The seating structure of claim 1 , wherein the frame is part of a seat.
8. The seating structure of claim 1 , wherein the suspension member includes a first layer and a second layer attached to the first layer such that a tension differential is created between the first layer and the second layer, and wherein the tension differential between the first layer and the second layer at least partially creates the three-dimensional topography.
9. The seating structure of claim 1 , wherein the suspension member crosses the straight reference line.
10. A seating structure comprising:
a base;
a backrest supported by the base, the backrest including a frame defining an opening;
a suspension member coupled to the frame and spanning over the opening;
a pocket defined in the suspension member; and
a support pad received in the pocket.
11. The seating structure of claim 10 , wherein the suspension member includes a first layer and a second layer, and wherein the pocket is formed between the first layer and the second layer.
12. The seating structure of claim 11 , wherein the second layer is attached to the first layer such that a tension differential is created in the suspension member, and wherein the support pad is supported within the pocket by the tension differential between the first layer and the second layer.
13. The seating structure of claim 10 , wherein the pocket is a first pocket and the support pad is a thoracic support pad received in the first pocket, the seating structure further comprising:
a second pocket defined in the suspension member and spaced apart from the first pocket; and
a lumbar support pad received in the second pocket.
14. The seating structure of claim 10 , wherein the suspension member is a knit suspension member having at least one monofilament.
15. The seating structure of claim 10 , wherein the support pad is not directly connected to the frame.
16. A seating structure comprising:
a frame defining an opening;
a suspension member coupled to the frame and spanning over the opening, the suspension member including a first tensile element that provides a first tensile force in the suspension member and a second tensile element that provides a second tensile force in the suspension member; and
a support pad supported on the suspension member between the first tensile element and the second tensile element.
17. The seating structure of claim 16 , wherein the first tensile element is a first layer of the suspension member, wherein the second tensile element is a second layer of the suspension member, and wherein the first layer and the second layer are attached to each other.
18. The seating structure of claim 16 , wherein the support pad is not directly attached to the frame.
19. The seating structure of claim 16 , wherein the first tensile force is at least partially directed toward a user-supported side of the suspension member, and wherein the second tensile force is at least partially directed away from the user-supported side of the suspension member.
20. The seating structure of claim 19 , wherein the first tensile force is greater than the second tensile force.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/508,030 US20240156265A1 (en) | 2022-11-11 | 2023-11-13 | Seating structure having a support pocket |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US202263424743P | 2022-11-11 | 2022-11-11 | |
US18/508,030 US20240156265A1 (en) | 2022-11-11 | 2023-11-13 | Seating structure having a support pocket |
Publications (1)
Publication Number | Publication Date |
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US20240156265A1 true US20240156265A1 (en) | 2024-05-16 |
Family
ID=91029244
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US18/508,030 Pending US20240156265A1 (en) | 2022-11-11 | 2023-11-13 | Seating structure having a support pocket |
Country Status (2)
Country | Link |
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US (1) | US20240156265A1 (en) |
WO (1) | WO2024103065A1 (en) |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69334200T2 (en) * | 1992-06-15 | 2008-12-24 | Herman Miller, Inc., Zeeland | Backrest for a chair |
TWM269799U (en) * | 2005-01-12 | 2005-07-11 | Comfordy Co Ltd | Improvement of reticular chairback structure |
US7406733B2 (en) * | 2005-05-13 | 2008-08-05 | Illinois Tool Works Inc. | Elastomeric fabric load bearing surface |
US8449037B2 (en) * | 2010-04-13 | 2013-05-28 | Herman Miller, Inc. | Seating structure with a contoured flexible backrest |
JP5731189B2 (en) * | 2010-12-22 | 2015-06-10 | 株式会社島精機製作所 | Solid shape fabric |
EP2887837A4 (en) * | 2012-08-23 | 2016-04-20 | Lear Corp | Thoracic region comfort seating system |
EP3777613A1 (en) * | 2015-01-16 | 2021-02-17 | Herman Miller, Inc. | Suspension member |
US10264890B2 (en) * | 2015-06-29 | 2019-04-23 | Herman Miller, Inc. | Back support |
US11291305B2 (en) * | 2017-12-05 | 2022-04-05 | Steelcase Inc. | Compliant backrest |
JP7440503B2 (en) * | 2018-10-25 | 2024-02-28 | イリノイ トゥール ワークス インコーポレイティド | Chair with suspended fabric with compression restrictions |
US11864661B2 (en) * | 2021-05-05 | 2024-01-09 | Steelcase Inc | Body support assembly and methods for the use and assembly thereof |
-
2023
- 2023-11-13 US US18/508,030 patent/US20240156265A1/en active Pending
- 2023-11-13 WO PCT/US2023/079535 patent/WO2024103065A1/en unknown
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WO2024103065A1 (en) | 2024-05-16 |
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