巴西专利BR112012025874B1 anatomical flexible backrest seat structure

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专利摘要:
seat structure with flexible anatomical backrest. a seating structure includes an abutment element having an upper edge, opposite side edges and a lower edge. the abutment element has a forward-facing convex shape molded along a vertical center line between the upper and lower edges. the bottom edge has a concave shape facing forward. the bottom edge has outer portions positioned in front of an entire top edge.
公开号:BR112012025874B1
申请号:R112012025874
申请日:2011-04-12
公开日:2020-04-07
发明作者:J Kurrasch Andrew；Recor Bret；walker Brock；C Hill Christopher；Matthai John；Edahiro Naoya；Li Qin；Behar Yves
申请人:Miller Herman Inc；
IPC主号:

专利说明:

Invention Patent Descriptive Report for ANATOMIC FLEXIBLE SEAT STRUCTURE.
[001] The present application claims the benefit of US Provisional Application No. 61/390 · 903, filed 07 October 2010, and US Provisional Application No. 61/323 · 635, filed on April 13, 2010, the disclosures of which Complete information is incorporated by reference into this document.
FIELD OF THE INVENTION [002] The present invention relates, in general, to a seat structure and, in particular, to a seat structure, such as a chair, with a flexible anatomical backrest, together with its methods of use it's Photoshop.
BACKGROUND [003] Seat structures can be configured with flexible back elements, such as polypropylene sheets and woven elastomeric membranes. Typically, the flexible elements are tensioned in several ways in order to provide a flexible element with a three-dimensional contour. For example, a peripheral frame can wrap and hold the flexible element. In other devices, several portions of the flexible element are held in positions spaced apart, with an intermediate element pushing the flexible element to form the flexible element and to tension parts of it. Such systems can give rise to hard, undesirable contact points either by contact with the frame or by contact with the intermediate element.
SUMMARY [004] The present invention is defined by the following claims, and nothing in this section should be considered as a limitation on those claims.
[005] In one aspect, a modality of a structure of the
2/27 includes a top support element having a top mounting portion vertically spaced from a bottom support element. The lower support element includes a pair of spaced side mounting portions positioned in front of the top mounting portion, and an intermediate mounting portion positioned behind the side mounting portions. A flexible member has an upper portion connected to the upper mounting portion and a lower portion fixedly connected to the side mounting portions and the intermediate mounting portion. The flexible element has a forward-facing concave shape, molded along a horizontal plane in a lumbar region of the flexible element, and a forward-facing convex shape, molded along a vertical plane, in a centerline of the flexible element . The flexible element includes lateral edges extended and tensioned between the upper mounting portion and the lateral mounting portions. A tension vector directed outwardly from the upper portion and disposed along any point on each of the lateral edges has a component extended forward.
[006] In another aspect, an embodiment of a seating structure includes a backrest element having an upper edge, opposite side edges and a lower edge. The stop member has a forward-facing convex shape molded along a vertical center line between the top and bottom edges. The bottom edge has a concave shape facing forward. The bottom edge is larger than the top edge, and the bottom edge has outer portions positioned in front of the entire top edge.
[007] In yet another aspect, a seat structure includes a flexible element made of an elastomeric material having an upper edge, opposite side edges and a lower edge. The flexible element has a forward-facing convex shape molded along
3/27 a vertical centerline of the same between the upper and lower edges, and a concave shape facing forward molded along a horizontal plane in a lumbar region of the flexible element. The flexible member is tensioned along the top edge from side to side, along the lumbar region from side to side, and diagonally from the end portions of the top edge to the opposite end portions of the bottom edge.
[008] In another aspect, one embodiment of a seat structure includes a backrest element having a cutout made in a lower region thereof and defining a portion of the cushion coupled to the opposite side portions with a pair of connectors laterally spaced on the opposite sides the cushion portion. The pad portion is pivotable over the pair of connectors in relation to the opposite side portions. A body support substrate is disposed along a front part of the stop member and covers the cushion portion.
[009] In another aspect, a backrest kit includes a backrest element and a body support substrate arranged along a front part of the backrest element. An auxiliary support element is disposed between the abutment element and the body support substrate. A handle is configured to be attached to the auxiliary support element and gripped in order to move the auxiliary support element between and in relation to the stop element and the body support substrate. A locking member is configured to be coupled to the auxiliary support element and prevent movement of the auxiliary support element between and in relation to the abutment element and the body support substrate.
[0010] In another aspect, an embodiment of a seat structure includes a backrest element having a front surface that faces the body, a column, central region and lateral regions
4/27 positioned on opposite sides of the column region. The abutment element has a plurality of openings formed in at least one of the upper, intermediate and lower portions of the lateral regions on the opposite sides of the column region. The column region is more rigid than the lateral regions. An auxiliary support element is movably coupled to the abutment element and is movable in front of the front surface facing the body of the abutment element. A body support substrate is disposed along the front surface that faces the body of the stop member and covers the auxiliary support element.
[0011] In another aspect, an embodiment of a seat structure includes an abutment element having a front surface facing the body and an auxiliary support element movably coupled to the abutment element. The auxiliary support element is vertically movable at the front of the front surface that faces the body of the abutment element between the first and second vertical positions. The auxiliary support element moves forward relative to the stop element from a first position to a second position as the auxiliary support element moves from the first vertical position to the second vertical position. A body support substrate is disposed along the front surface that faces the body of the stop member and covers the auxiliary support element.
[0012] In another aspect, a seat structure comprises a frame and a flexible back element coupled to the frame in the upper and lower positions of the flexible back element. A strap is directly connected to the flexible backing element in vertically spaced positions arranged in a vertical direction between the upper and lower positions. A support element is attached to the strap and fits a back of the flexible back element.
5/27 [0013] The different types of seat structure offer significant advantages over other seat structures. For example, and without limitation, the abutment element is provided with a flexible element that has a three-dimensional contour and is shaped to maintain and support a user's body. This contour is introduced, in some modalities, without a peripheral frame and without an intermediary element fitted, which forces a change of shape of the flexible element. At the same time, the unique set of saddle-shaped shapes created by the geometry of the support structure provides smooth initial support for the user, on the other hand offering firm support when the user tilts the backrest back. The unique structure also provides an improved aesthetic.
[0014] The preceding paragraphs are provided as a general introduction, and are not intended to limit the scope of the claims that follow. The various preferred modalities, together with other advantages, will be better understood by reference to the detailed description below, taken in conjunction with the attached drawings.
BRIEF DESCRIPTION OF THE DRAWINGS [0015] Figure 1 is a front perspective view of a first embodiment of a seat structure.
[0016] Figure 2 is a rear perspective view of a first embodiment of a seat structure.
[0017] Figure 3 is a side view of a first embodiment of a seat structure.
[0018] Figure 4 is a front view of a first embodiment of a seat structure.
[0019] Figure 5 is a rear view of a first embodiment of a seat structure.
[0020] Figure 6 is a top view of a first modality
6/27 of a seat structure.
[0021] Figure 7 is a bottom view of a first embodiment of a seat structure.
[0022] Figure 8 is a front perspective view of a second embodiment of a seat structure.
[0023] Figure 9 is a rear perspective view of a second embodiment of a seat structure.
[0024] Figure 10 is a side view of a second embodiment of a seat structure.
[0025] Figure 11 is a front view of a second embodiment of a seat structure.
[0026] Figure 12 is a rear view of a second embodiment of a seat structure.
[0027] Figure 13 is a top view of a second embodiment of a seat structure.
[0028] Figure 14 is a bottom view of a second embodiment of a seat structure.
[0029] Figure 15 is an exploded perspective view of different modalities of a seat structure.
[0030] Figure 16 is an exploded perspective view of an embodiment of a back of a seat structure.
[0031] Figure 16A is a schematic diagram of the stress vectors along a side edge of the stop member.
[0032] Figure 16B is a schematic cross-sectional view of a first saddle taken along a vertical plane.
[0033] Figure 16C is a schematic cross-sectional view of a second saddle taken along a horizontal plane.
[0034] Figure 17 is an exploded perspective view, from the bottom of a one-seat modality to a seat structure.
[0035] Figure 18 is a partial side view of a modality
7/27 of an abutment structure.
[0036] Figure 19 is a partial perspective view of an embodiment of a backrest structure.
[0037] Figure 20 is a partial perspective, frontal view of another modality of a backrest structure, with a lumbar support positioned in an unsupported position.
[0038] Figure 21 is a partial perspective, frontal view of another modality of a backrest structure, with a lumbar support positioned in an unsupported position.
[0039] Figure 22 is a perspective view of a lumbar support pad.
[0040] Figure 23 is a rear, partial view of a lumbar support in a disabled position.
[0041] Figure 24 is a rear perspective view, partial of a backrest with a lumbar support.
[0042] Figure 25 is a perspective view of alternative configurations for a backrest.
[0043] Figure 26 is a perspective view of an upholstered backrest configuration.
[0044] Figure 27 is a cross-sectional view of an upper portion of the backrest shown in figure 26.
[0045] Figure 28 is a perspective view of a flexible backrest configuration, comprising a peripheral frame.
[0046] Figure 29 is a cross-sectional view of a connection between a frame and a flexible element.
[0047] Figure 30 is a partial view of the connection between a frame and a flexible element.
[0048] Figure 31 is a schematic, side view of the connection shown in figure 30.
[0049] Figure 32 is a front view of a one-way modality
8/27 backrest element showing several tracks.
[0050] Figure 33 is a table with diagrams showing the different strip properties for the laterally extended bands shown in figure 32.
[0051] Figure 34 is a table with diagrams showing the different strip properties for the diagonal / vertical bands shown in figure 32.
[0052] Figure 35 is a rear perspective view of a modality of a backrest configured with a lumbar support.
[0053] Figure 36 is a front perspective view of a lumbar support.
[0054] Figure 37 is an enlarged view of the upper fixation position for the lumbar support shown in figure 35.
[0055] Figure 38 is an enlarged view of the lower fixation position for the lumbar support shown in figure 35.
[0056] Figure 39 is a front perspective view of an alternative modality of a backrest.
[0057] Figure 40 is a rear perspective view of the backrest shown in figure 39.
[0058] Figure 41 is a rear view of a loop used to adjust the lumbar support shown in figures 39 and 40.
[0059] Figure 42 is a front view of the lumbar support.
[0060] Figure 43 is a rear view of a locking component.
[0061] Figure 44 is an enlarged partial view of the locking component of figure 43 fitted to the lumbar support and back lining.
[0062] Figure 45 is a rear view of the latch component, a guide and the lumbar support.
DETAILED DESCRIPTION OF PRESENT MODES 9/27
PREFERRED TE [0063] It should be understood that the term plurality, as used herein, means two or more. The term longitudinal, as used herein, means the or refers to the length or in the direction of the length, and, in general, corresponds to a direction that runs between a forward and backward position, or from top to bottom, for example , from the front of a seat to the rear of the seat, or from the bottom of a backrest to the top of the seat, or vice versa. The term lateral, as used herein, means situated in, or directed to or running from side to side. The term coupled means connected to or attached to, directly or indirectly, for example, an intermediate element, and does not require the attachment in order to be fixed or permanent, although it can be fixed or permanent. The terms first, second and so on, as used in this document are not intended to be assigned to a particular or designated element, but must simply refer to such components in numerical order, as presented, which means that a component designated as first may later be a second component, depending on the order in which it is referred to. Likewise, it should be understood that the designation of first and second does not necessarily mean that the two components or the values so designated are different, which means, for example, that a first direction can be equal to a second direction, with each being simply applicable to different components.
Seat and Tilt Control Housing [0064] Referring to figures 1 to 15, a seat structure is shown. The seat structure is configured as a chair, and includes a seat 2, a backrest 4 and a base 6. The base includes a tilt control housing 8, a support column 10 steel
10/27 plated to and supporting the tilt control housing and a base structure 12 and coupled to and supporting the support column. The tilt control housing includes a polarization mechanism, such as a leaf spring 14, a torsion spring, a tension / compression spring, etc., or combinations thereof, that fits and polarizes a rear tilt support 16 to an upright position. The rear tilt support 16 is pivotably connected to the tilt control housing 8 on a main pivot 18. Seat 2 is supported by the tilt control housing, and includes a skirt 20, attached to and supporting a seat support 22, for example, and without limitation, through a plurality of fasteners. The seat support 22 includes a tray 26, with a layer of foam and fabric 24 that interfaces with the user. In other embodiments, the seat can be configured with a suspension material.
[0065] With reference to figures 15 and 17, tray 26 slides along a pair of rails 28 pivotably attached to the rear tilt support 16 and supported slidably on a front part of the housing by means of a pair of guides 30. An actuator 32, laterally polarized by a spring 36, extends through an opening 38 in the skirt and includes end portions 34 which are fitted into the openings 40 formed in one of the rails in order to lock the seat in a position of desired depth. A locking element 42 can be provided to prevent the seat from running too far back or leaving the rails. The locking elements 43 limit the forward travel of the seat. The locking element 42 can be installed after the seat is mounted on the rails. In an alternative, non-adjustable mode, the skirt opening is closed with a cover 44. A locking element 46 is snapped into position after the seat is mounted on the rails, with a pair of
11/27 guide accessories 47 that fit into a hole 49 in the rail in order to prevent the seat from making any forward / backward movement.
[0066] The rear tilt support 16 is inserted into a cavity 48 formed in a back support 50 and is coupled to the back support. The support includes a pair of flanges 58 that extend forward and cover the sides of the rear tilt support. In operation, the user leans backwards, with the backrest support 50 and the rear tilt support rotating around the main pivot 18 in opposition to the polarization force of the springs 14. Seat 2, coupled to the rails 28, pivots with the rails as they rotate and slide in relation to the tilt control housing
8. A control 52 is provided to adjust the bias force of the spring. Likewise, the height of the support column can be changed when operating a control 54. Rear and front tilt limitation actuators 51, 53 are coaxially aligned with the spring control 52, with the rear limiter positioned behind the front limiter .
[0067] In another embodiment shown in figure 25, the base 56 includes a frame 56 that has a pair of braces 58 coupled to the backrest. Other aspects of the seat structure illustrated in figure 25 are presented in a US Provisional Application (Case of Attorney No. 3591-1819), entitled Chair Construction and Method Therefore, and filed on the same date as this application, with the entire presentation incorporated as a whole into this document. Backrest [0068] The backrest support 50 is configured as a molded plastic component having a transverse element 60 that ends in a pair of laterally spaced side uprights 62 and a curved support 64 connected to the side uprights and the
12/27 a central support 66. The support can be made of various suitable materials, including, without limitation, a nylon with fiberglass, polypropylene with fiberglass PBT, Petra, and other similar materials, or combinations thereof. The curved support 64 has a concave contour facing forward, with end portions 68 thereof positioned higher than an intermediate portion 70 or middle portion. The back support also includes an upright 72 having a central element housed on a ledge 74 and coupled to the central support 66 and a curved element 64. A crossbar 76 and cover 78 secure the upright to the curved support 64. The upright has a pair of outward and upwardly extending arms 80, with end portions 82 configured as upper mounting portions to support an abutment 84.
[0069] With reference to figures 1 to 15, a pair of armrests 86 is arranged in cavities 88 formed by the lateral uprights 62, and coupled to them. The rest arms include inner sleeve elements 88, and a stem 90 disposed in the inner sleeve. An arm support 93 is coupled to the rod. In various embodiments, the armrests are vertically adjustable, by means of the rod that moves in relation to the inner sleeve and the lateral uprights, and / or horizontally adjustable, with the armrest being adjustable laterally, in the longitudinal or rotational direction. The adjustable armrests are also presented in Provisional Application USN 61/323 660 (Case of Attorney No. 3591-1823), entitled Adjustable Armrest and filed on April 13, 2010, with the entirety of its presentation incorporated as a whole to the this document.
[0070] The stop element 84 can be configured in many different arrangements and with different materials. In a first embodiment, shown in figures 1 - 7 and 15, the backrest element is
13/27 made of a flexible elastomeric material. For example, and without limitation, the backrest element can be made of Huntsman Irogran A92P4637R TPU, an aromatic urethane, which can be selected for its hardness, elasticity modulus, UV resistance, economy, and smooth tactile sensation, no sticky. Other suitable materials may include, without limitation, aliphatic urethanes, TPE, such as Hytrel or PEBA materials or combinations thereof. The backing element can be made translucent. The stop member has a thickness of about 3 mm to about 9 mm, with a nominal thickness of about 4 mm in one embodiment. With reference to figures 32 to 34, the height and thickness of a thread or strip of material can vary, for example, inversely so that the thread can look thinner on the side aspects of the backrest, although it has approximately the same area in cross section. In various modalities, any of the strips laterally or vertically / diagonally extended can vary in the area in cross section in order to create areas of greater rigidity. With reference to figures 32 and 33, the side strips H0-H39 are sequentially originated from the upper corners, external to the lower portion of the backrest, with various shapes and areas in cross section shown. Likewise, the diagonal / vertical strips V1 - V26 are sequentially originated from an outermost lateral position (V1) that moves inward, with a pair of converging V11 wires to form a single stripe along a centerline position at the bottom of the stop member. The tracks V12 - V26 also converge on the tracks that intersect laterally, as shown. The strip or yarn can be thickened in areas where greater support (stiffness) is desired. For example, the support of a user in the center (close to the center line of the back) may be desirable, so islands of wire or thicker bands can be used in the direction
14/27 to offer greater support in the sacral, lumbar and thoracic regions along the center line of the backrest. The thickest area can be a strip whose width is about the size of a human spine, 60 mm wide, more or less. This will increase the flexural stiffness in that area, as well as the elastic rate of a wire when the back supports a user due to catenary forces. In various embodiments, the abutment element can be shaped with a three-dimensional shape, even when free from any tension or pressure, or it can be shaped or formed as a flat element, with the three-dimensional shape being introduced through tension and connections with the support structure.
[0071] The elastomeric material can be oriented, for example, by means of compression or elongation, in order to provide the abutment element with different load characteristics in different directions. Several oriented elastomeric materials and components manufacturing methods from such materials are shown in US Publication No. · 0267258A1, published on November 30, 30, 2006, and US Publication No. 2006/0286359 A1, published on December 21 2006, the complete descriptions of which are incorporated by reference in this document. The abutment element may, in an alternative manner, be made of an elastomeric fabric or membrane, for example, as a tissue membrane such as disclosed in US Patent ^No. 6 059 368, the complete description of which is incorporated by reference in this document. In one embodiment, a plastic (elastomeric) carrier may be molded or otherwise attached to the edge of the fabric in order to maintain the appropriate tension and provide the required conformity for its adjustment to the end user.
[0072] In one embodiment, the backing element 84 has an upper portion with an upper edge 86, opposite side edges
15/27 and a bottom portion with a bottom edge 88. The top edge 86 is shorter than the bottom edge 88. The bottom edge 88 has end portions 92 that are positioned in front of the top edge 86, with the side edges 90 extending downward and forward from the top edge 86 to the bottom edge 88. The bottom edge 88 has a concave shape facing forward, which joins with the curved support 64. An intermediate or middle portion 94 of the edge the bottom is positioned towards the rear of the upper edge 86, and under an upper support surface of the seat 2 and behind a rear portion of the seat 2. Thus, and due to the curvature, the length and the positioning of the lower edge 86, the lower edge has end portions 92 positioned at the front of upper edge 86 and an intermediate or middle portion 94 positioned at the rear of upper edge 86 when the backrest is in a position normal, vertical. It is to be understood that the intermediate portion includes portions of the abutment element on opposite sides of the upright 72. The end portions 92 are laterally spaced in such a way that several target populations can sit with their hips positioned between them. Likewise, the backrest element is of sufficient height to extend above the scapula of the target populations. In one embodiment, the angle of the upper back in an upright, resting position is about 103 degrees from the horizontal angle.
[0073] The curved support 64, with its intermediate portion and external side portions, define a lower support element for the backrest element. As shown in figures 2, 5, 30 and 31, the end portions 82 that define the upper mounting portions, in one embodiment, are configured as flange elements that are received in the pockets 98 formed in the outer corners, upper 100 of the backrest element 84. In other modalities,
16/27, for example, in figure 16, the end portions 82 are coupled to the abutment element with a pivot element. The lower edge 88 is fixed to the curved support along a length of the same, with the exception of a center line of the same, in which an opening is formed in order to allow the passage of the amount 72. It is evident that, in an embodiment , the lower edge 88 can still be fixed along the center line up to the upright. The bottom edge can be connected to the holder in several ways. In one embodiment, the vertically extending wires, or strips, have eyelets molded into them, with the eyelets fitting above and fitting into the end pieces that project downwards from the bottom of the bottom face of the support 64. In other modalities, the bottom edge is connected to the curved element with fasteners, welding, gluing, carrier elements, or the like, and / or combinations thereof. In one embodiment, the side uprights 62 are also part of the side mounting portion, in combination with the ends 68 of the curved support 64. It should be understood that the side uprights 62 can be omitted in one embodiment, with the curved element 64 acting separately as the lower support element. As shown, the stop member 84 includes a mounting portion 102 formed at the junction of the side edges 90 and lower 88, with the mounting portions 102 attached to the side uprights 62. In one embodiment, the mounting portions 102 form a loop slide that slides along the side uprights 62. A pair of screws can be installed through the rear of the upright and loop and onto a threaded plate, thereby interleaving and securing the mounting portions 102 against the uprights 62.
[0074] The stop member 84 is tensioned between the upper and lower mounting structures 82, 64, 62. The tension can be different
17/27 ferent, depending on the position and orientation on the stop element. In general, the horizontal wires or bands carry more tension than the vertical wires in the lower back. Above the mounting portions 102, the horizontal and vertical wire tension is of the same order. After installation, the tension ranges from less than 2.27 kg (5 pounds) at the lower edge 88 to a maximum of 36.29 kg (80 pounds) near the upper end portions 100. In particular, the stop member 84 it is tensioned along the upper edge portion 86 between the end portions 100. The stop member is further tensioned along the side edges 90, with a tension vector 91 directed out of the upper edge portion 86 and in the direction of the lower edge portion 88, and taken along any point on the lateral edge 90, which has a directional component extended forward and downward. Of course, the opposite is also true, a stress vector 93 directed away from the lower edge portion 88 and towards the upper edge portion 86 will have a directional component that extends in the rear and upward direction, as shown in figure 16A, with vectors 91 and 93 being equal and opposite. The backing element 84 is further tensioned laterally from side to side, in the lumbar region 104, and diagonally from the end portions 100 of the upper edge 86 to the opposite end portions 92 of the lower edge 88. The flexible element is shaped forward-facing convex molded along a vertical centerline 106 thereof between the upper and lower edges 86, 88, and a forward-facing concave shape molded along a horizontal plane 108 in the lumbar region 104 thereof. In this way, the backrest element has unique saddle shapes, a saddle 110 defined by the front part of it that extends laterally along the lumbar region, and a saddle 112 defined by the rear part of it that extends longitudinally along the region low back. The sections
18/27 transversal of the saddles are shown in figures 16B and C. In this way, the backrest offers a soft initial support to the user, on the other hand, it provides firm support as the user tilts the backrest back. The unique structure also offers improved aesthetics, while eliminating the need for additional support in the lower back.
[0075] In one embodiment, the backrest element is supported by the support structure in at least one upper position and in at least three lower positions, including a pair of laterally spaced lateral positions arranged in front of the upper position and at least one position intermediate layer behind the lateral positions. In one embodiment, the intermediate position is defined by a plurality of positions arranged along a curve that extends between the lateral positions.
[0076] When an additional support is desired, an auxiliary lumbar support 114 can be provided, as shown in figures 1 16, 18, 19 and 35 - 38. In this embodiment, a strap 116 is fixed to the backing element 84, by example, with fasteners, tabs, stickers, or the like, or combinations thereof. For example, in one embodiment, the belt 116 has a curved or arched shape that matches the contour of the adjacent abutment element. The belt may have a pair of projections extending forward 300, 302 positioned at each end thereof. In one embodiment, each shoulder is configured with a pair of openings 304, or, alternatively, with a single opening, which defines an edge or handle portion 306 on the opposite sides of the opening (s). The shoulder 300, 302 fits into an intermediate wire (converging V11) or backing element strip, for example, with an intermediate portion of the shoulder positioned between the openings 304. A clamp 308, 310 molded, in one embodiment, into one U shape has a pair of
19/27 resilient arms 312, each configured with a handle element 314. The clamp 308, 310 is disposed on the central strip, which can have a cutout 316 such that the clamp is flush with the front surface of the strips , with the arms 312 being housed through the openings 304 until the handle elements 314 engage the handle portions 306 on the shoulders, thereby fixing the strap 116 on the stop element 84.
[0077] A cushion element 118 is disposed on, and slides vertically along the strap to a desired vertical position, in which it fits on the rear surface of the backing element 84. Since the strap 116 is attached to the abutment element, instead of upstream, the belt 116 and the cushion 118 can flex and move with the abutment element 84, thereby providing additional support, but without restricting the movement of the abutment element. In an alternative embodiment, the pad element 118 can be coupled directly to, and movably along, the pillar 72.
[0078] As shown in figures 35 and 36, a cushion modality is configured with pairs of upper and lower clips 322, which can be slid into the belt from a lower portion of it, with the lower shoulder having cut-out portions 324 in order to provide the insertion of the strap through the clamps. The cushion further includes a pair of wings 326 that extend laterally outwardly from the strap in a cantilever configuration. The wings are configured with opposite top, bottom and side portions 328, 330, 332 that define a central opening 338. A pair of front flaps 334 extends laterally inward from the opposite side edges of the wings, the edges of which form a live joint 332, and are each finished at a free end 336, such that the front flaps are cantilevered to
20/27 inside. In an alternative embodiment, the front flaps can be joined in the middle line, in such a way that a unitary front support is provided. In operation, a front surface of the front flaps 334 engages with a rear surface of the backing element 84. The wings and the front flaps are configured in such a way that the front flaps 334 polarize or move backward through the backrest for a loading position. In this way, the cushion, or the auxiliary support, provides additional support, for example, in the lumbar region. The cushion can be moved vertically along the belt to a desired support position.
[0079] The backing element 84 is provided with a plurality of openings 120 which are arranged to form at least one strip 122 of material that extends laterally between the opposite side edges and at least one strip 124 that extends diagonally to from the upper edge portion 86, and in particular from the corners 100 thereof. Diagonal strips 124 extend inwardly and intersect with laterally extended strips 122 and converge with vertically oriented strips 126 so as to provide a loading path for tension loads. Other secondary strips can be provided in order to interconnect and maintain the position of the load-bearing strips.
[0080] With reference to the embodiment of figures 8 - 14 and 20 - 24, the backing element 85 is configured as a more rigid covering130, which is covered with a layer of foam 132 and an outer layer of fabric 134. Suitable materials include polypropylene and polyurethane foam, with, for example, 1.5 mm. The fabric can be of any material suitable for upholstered seats. Other layers can be provided in order to offer flame retardant properties. A lower edge portion 136 of the
The coating is coupled to the curved element, with the upper portion 138 of the coating connected to the end portions 82 of the arms 80. In one embodiment, fasteners are oriented upwards through the lower support 64 to a lower portion of the coating, which has a recess formed in order to accommodate a portion of the lower support. End portion fasteners 82 are coupled to the liner. The cladding is configured with a pair of recesses 140 on the front side thereof, and a groove extended in the longitudinal direction 142. With reference to figures 20, 21, 23, 24, 39 and 40, a cutout 350 is made in the cladding in a lower region thereof, in order to define a portion of cushion 354 connected to the opposite side portions, with a pair of connectors 352. In one embodiment, connectors 352, which are integrally formed with the cushion and the rest of the liner, are the only connection to the cushion. In one embodiment, the cushion is substantially rectangular in shape. In operation, the cushion can rotate or pivot about an axis defined by the connectors. The pillow also has a vertical slot 151 formed therein.
[0081] With reference to figures 20 - 22 and 39 - 42, an auxiliary lumbar support 144 has a central portion 154 and opposite side portions 146 connected to the central portion with connectors, with the side portions arranged in the recesses, with a guide portion upper 148 engaging and sliding along the groove, and with a lower guide portion 149 engaging and sliding along a slot 151 formed in the liner. The guide portion 148 fits into a locking element on the liner when the auxiliary support is in a higher support position. A handle 150 having a grip portion 152 is connected to the upper guide portion 148 and extends through a slot 154 in the foam and / or
22/27 fabric covering the back of the lining, with the handle 150 and the grabbing portion 152 exposed to the user. The handle may include a pair of resilient arms 360, each having a handle portion 362, the arms of which are inserted through and engaging the corresponding handle portions 364 on the guide portion of the auxiliary support. A locking portion 366 of the handle fits into a corresponding locking portion 368 on the auxiliary support such that the handle is held in place.
[0082] In operation, the lumbar support 144 is movable between a support position and an unsupported position, as shown in figures 20 and 21, respectively, with the lumbar support being infinitely adjustable between the unsupported position and a position of more superior support. In the unsupported position, the pads 146 of the lumbar support are arranged in the recesses 140, such that the lumbar support, in combination with the front surface of the lining, is substantially level. Alternatively, as shown in figure 39, the pads are relatively thin and provide no front support when in the unsupported position. When more support is desired, the user grips the handle 150, 152 and moves the lumbar support 144 upwards, with the pads 146 up the slopes and along the front surface of the liner between the liner and the body support substrate, for example. example, foam, thereby polarizing foam 132 and fabric 134 forward, as shown in figure 21. As shown in figure 39, ribs 370 are formed on a front surface of the stop member, and define the inclinations. In addition, the back of the cushion can be configured with ribs 372 which are arranged in the grooves 374 formed in the backing element when the auxiliary support is in a lower position, with the ribs engaging in front of the backing element and acting
23/27 as an inclination when the auxiliary support element is moved upwards, thereby polarizing the support element, and overlapping the body support substrate, at the front. The body support substrate can be a cushion, for example, and without limitation made of foam, or it can be any other material. The foam can be molded in place on the auxiliary support and abutment element, or molded as a separate piece and then fixed on the auxiliary support on the abutment element. One or more additional layers, such as, for example, a decorative fabric, can be superimposed on the body support substrate. It is clear that it should be understood that other layers can also be arranged between the body support substrate and the underlying auxiliary support element and / or the stop element.
[0083] With reference to the modality of figures 39 and 40, the backing element has a column, central region 390 and lateral regions 392 positioned on the opposite sides of the central column region. A plurality of openings 394, 396, 398 are formed in the abutment element in order to provide different degrees of rigidity or hardness thereto. The hardness or stiffness can also be modified by varying the thickness or geometry of the material, for example, by providing ribs or other structural characteristics resistant to bending. The column region 390, including the auxiliary support element, is relatively rigid in order to provide support for the user's column, and provides greater rigidity than the side regions 392 positioned on the opposite sides of the column region. An intermediate portion 400 of the side regions 392, excluding the edge of the abutment element, can be 2 to 3 times less rigid than the central column region 390, as measured, for example, by means of kickback deflection measurements . The upper and lower portions 402, 404 of the side regions 392 may be less rigid than the intermediate portions 400 of the regions
24/27 side sections 392, for example, and without limitation, three times less rigid. In one embodiment, the plurality of openings 396, 398 in the lower and intermediate portions 400, 404 are configured with laterally and vertically spaced portions 408 connected to a thinner longitudinal portion 410. In one embodiment, the openings 398 in the lower portion include, at least one portion having an I-beam shape, while the openings 396 in the intermediate portion are hourglass or dog bone shaped. In one embodiment, the openings in the upper portion are formed as vertical slits, which can vary in length. The openings in all three portions can be aligned vertically, with their columns being horizontally spaced.
[0084] In order to simplify assembly and reduce inventory, a latch component 156 can be installed in place of the handle, as shown in figures 23 and 43 - 45. Latch component 156 includes a shoulder or handle portion 430 which is fitted by means of a handle element 432 on the lining, and also fits on the guide 148 of the auxiliary lumbar support, thus preventing the lumbar support from moving from the unsupported position. The foam and fabric are then applied, with the backrest being therefore configured without an adjustable lumbar support. The locking member may include a pair of arms 360, each having a handle portion 362 that fits into the configured handle portions, in a form, such as the shoulders formed on the auxiliary support, and a locking element 366. Such as shown in figures 42, 44 and 45, the auxiliary support may further include a pair of resilient release arms or rods 420, each having an end portion 422 aligned with the arms of the latch or handle component In operation, the user pushes the arms 420, which polarize the arms 360 of the locking element or handle inward until the portions of
25/27 takes 362, 364 comes off. The locking element and / or strap can then be removed and replaced, for example, when it is desired to make the lower back adjustable by installing a strap or changing a broken or worn strap. During assembly, the operator can be provided with a kit, which includes the backing element, a locking component and a handle, with one of the locking component or the handle being selected and installed according to the final desired configuration of the seat structure.
[0085] With reference to figure 25, other modalities of the abutment element are shown. In one embodiment, the backrest element 160 is simply made of a rigid plastic material, for example, and without limitation of polypropylene, but with a shape similar to that shown in the other embodiments, that is, with a longer curved lower edge 194 that an upper edge 196, with an intermediate portion of the curved edge positioned under its ends, lateral edges extended forward and downward 198, a concave shape facing forward molded along a vertical centerline, and a convex shape facing forward that extends laterally in the lumbar region. The stop member 160 can have openings 162 formed therethrough in order to provide air circulation and improve aesthetics. The mounting portion 164 at the junction of the side and bottom edges is the only mounting portion, such that the curved support and the upper supports can be eliminated. Of course, these structures can be used in other ways. The mounting portion fits the frame peg 58. The armrests 61 or plugs 64 can be inserted into the pegs 58 in order to complete the assembly. A seat 59 can be supported by frame 56.
[0086] In another modality, shown in figures 25 - 27, he
The backrest 26/27 includes a lining 170 coupled to the front and rear inserts 172, 174. A layer of foam 176 lines the front, with the fabric 178, 180, then coating the foam and the rear insert. A peripheral edge 182 of the liner remains exposed. The inserts each include a plurality of resilient flap elements 184, 186 that extend through the openings 188 formed in the liner 170. The resilient flap elements 184, 186 are provided with a snap fit in order to complete the assembly, inserting the covering 170 between the inserts. The front fabric layer 178 lines the foam layer 176 and has an edge portion 190 that extends into a space formed between the liner 170 and the front insert 172.
[0087] Similarly, the rear fabric layer 180 has an edge portion 192 that extends into a space formed between the rear insert 174 and the liner 170. The fabric layers can be stapled, glued or both, in the inserts. Once again, the backrest assembly has a shape similar to that shown in the other modalities, but with the mounting portion 200 at the junction of the side and bottom edges being the only mounting portion, such that the curved support and supports can be eliminated. The mounting portion 163 fits into a pivot 58, or other similar support structure.
[0088] In yet another embodiment, shown in figures 25 and 29, a peripheral frame 202 is provided, which forms a central opening 204, and has a channel 206 formed around a front facing it. A flexible element 208, such as an elastomeric material, membrane, or fabric described above, is provided with a peripheral edge portion 210. A retainer 212 includes an edge portion 213 that fits into the edge portion 210 of the flexible and secure element the flexible element inside and against the frame channel
27/27
206. Fasteners 214, such as screws, tabs, snap fit, etc. couple the retainer 2312 to the frame 202, with the flexible element 208 arranged and stuck between them. Once again, the backrest set has a shape similar to that shown in other styles5, however with the mounting portion at the junction of the side and bottom edges being the only mounting portion, such that the curved support and the supports can be eliminated. The mounting portion fits on a pole, or other similar support structure.
[0089] Although the present invention has been described with reference to preferred embodiments, those skilled in the art will be able to recognize that changes can be made in form and detail without departing from the spirit and scope of the present invention. Therefore, it is intended that the above detailed description is considered as illustrative and not as limiting and that it is covered by the appended claims, including all its equivalents, which are intended to define the scope of the present invention. .

权利要求:
Claims (23)
[1]
1. Seat structure (2), characterized by comprising:
- an abutment element (4) having an upper edge (86), opposite side edges and a lower edge (88), said abutment element (4) having a forward-facing convex shape formed along a line with its vertical center between the upper and lower edges, where the bottom edge (88) has a concave shape facing forward, where the bottom edge (88) is greater than the top edge (86), and where the edge bottom (88) has outer portions positioned in front of the entire top edge (86).
[2]
2. Seat structure (2) according to claim 1, characterized in that the backing element (4) comprises a plurality of strips extended laterally with several areas in cross section.
[3]
Seating structure (2) according to claim 1, characterized in that the backing element (4) comprises a molded component having a three-dimensional molded shape.
[4]
4. Seat structure (2) according to claim 1, characterized by the fact that it also comprises a support connected to the backrest element (4) adjacent to said upper edge (86).
[5]
5. Seat structure (2) according to claim 4, characterized in that the support comprises a central vertical structure and a pair of arms (80) extending from the central vertical structure, in which the arms they are connected to the stop member (4) adjacent to the upper edge (86).
[6]
6. Seat structure (2), according to claim 5, characterized by the fact that it still comprises a pair of laterally spaced vertical structures arranged adjacent to the outer portions of the lower edge (88) of the backing element (4), in that the outer portions are coupled to the vertical side structures.
2/4
[7]
7. Seat structure (2) according to claim
6, characterized by the fact that it still comprises a pair of armrests received in the pair of vertical side structures.
[8]
8. Seat structure (2), according to claim
7, characterized by the fact that each of the pair of armrests is vertically adjustable.
[9]
9. Seat structure (2) according to claim 6, characterized by the fact that the pair of vertical side structures and the central vertical structure are rigidly connected.
[10]
10. Seat structure (2) according to claim 9, characterized in that the support comprises a transverse element (60) that connects the vertical structures, and in which the central vertical structure is connected to the transverse element (60 ).
[11]
11. Seat structure (2) according to claim 9, characterized in that the vertical structures and the central vertical structure are connected to a base structure (12).
[12]
12. Seat structure (2), according to claim 6, characterized by the fact that each of the external portions is coupled to a correspondent among the vertical structures with a fastener.
[13]
13. Seat structure (2) according to claim 1, characterized in that the abutment element (4) comprises a plurality of openings formed through it.
[14]
14. Seat structure (2) according to claim
13, characterized by the fact that at least some of the openings are elongated.
[15]
15. Seat structure (2) according to claim
14, characterized by the fact that at least some of the openings are elongated in a vertical direction.
[16]
16. Seat structure (2) according to claim
3/4
1, characterized by the fact that the lower edge (88) defines a more rear portion of the abutment element (4).
[17]
17. Seat structure (2) according to claim 1, characterized by the fact that it still comprises an auxiliary support element that fits a front surface of the back element (4).
[18]
18. Seat structure (2) according to claim 17, characterized by the fact that it still comprises a foam substrate covering the auxiliary support element and the front surface of the back element (4), and a fabric arranged on the foam substrate.
[19]
19. Seat structure (2) according to claim 17, characterized by the fact that it still comprises a support connected to the backrest element (4) adjacent to the upper edge (86) and the lower edge (88).
[20]
20. Seat structure (2) according to claim 19, characterized by the fact that the back element (4) comprises a flat element, when free from any pressure, the back element (4) assuming a three-dimensional format depending on the connections to the support.
[21]
21. Seat structure (2) according to claim 1, characterized in that the support comprises an upper support structure and a lower support structure, wherein the lower support structure comprises a connected curved support element a, and which supports, the lower edge (88) of the abutment element (4).
[22]
22. Seat structure (2), according to claim 1, characterized by the fact that it still comprises:
- an upper support structure comprising an upper mounting portion (82);
4/4
- a lower support structure spaced vertically in relation to the upper support structure, wherein the lower support structure comprises a pair of laterally spaced mounting portions positioned in front of the upper mounting structure and an intermediate mounting portion positioned behind the portions side mounting brackets, and
- a flexible element having an upper portion connected to the upper mounting portion (82) and a lower portion connected to the side mounting portions and the intermediate mounting portion, wherein the flexible element has a forward-facing concave shape taken along of a horizontal plane in a lumbar region (104) of the flexible element, in which the flexible element has a forward-facing convex shape taken along a vertical plane of a centerline of the flexible element, and in which the flexible element comprises lateral edges extended and tensioned between the upper mounting portion (82) and the lateral mounting portions, wherein a tension vector (93) directed outwardly from the upper portion and taken along any point on one of the lateral edges has a component extended forward.
[23]
23. Seat structure (2) according to claim 22, characterized by the fact that the upper and lower support structures are connected to a vertical structure that extends in the vertical direction.

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同族专利:

公开号 | 公开日

AU2019206058B2|2021-09-16|

EP2557966A1|2013-02-20|

CN105231706A|2016-01-13|

EP3081115B1|2020-07-01|

MX341802B|2016-09-01|

CN102843931B|2015-12-02|

US20140028061A1|2014-01-30|

US20120007400A1|2012-01-12|

SG184517A1|2012-11-29|

US9301615B2|2016-04-05|

AU2021286326A1|2022-01-20|

EP2557966B1|2016-08-10|

JP6170428B2|2017-07-26|

BR112012025874A2|2016-06-28|

CA2795915A1|2011-10-20|

AU2019200608A1|2019-02-21|

EP2557966A4|2014-04-02|

HK1215847A1|2016-09-23|

US8449037B2|2013-05-28|

CN102843931A|2012-12-26|

AU2016266001B2|2018-11-01|

HK1179486A1|2013-10-04|

US20150216311A1|2015-08-06|

AU2016266001A1|2016-12-15|

US8926016B2|2015-01-06|

AU2019200608B2|2019-04-18|

EP3081115A1|2016-10-19|

AU2011240652A1|2012-10-11|

CN105231706B|2018-09-21|

EP3718439A1|2020-10-07|

AU2011240652B2|2016-09-22|

CA2795915C|2018-02-27|

JP2013523405A|2013-06-17|

MX2012011960A|2012-11-06|

WO2011130264A1|2011-10-20|

AU2019206058A1|2019-08-08|

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法律状态:
2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

2019-08-13| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

2020-02-18| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

2020-04-07| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 12/04/2011, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

申请号 | 申请日 | 专利标题

US32363510P| true| 2010-04-13|2010-04-13|

US39090310P| true| 2010-10-07|2010-10-07|

PCT/US2011/032106|WO2011130264A1|2010-04-13|2011-04-12|Seating structure with a contoured flexible backrest|

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