Portable chair

Abstract

The utility model provides a portable chair. The portable chair is provided with an upper back supporting piece and a lower back supporting piece which are connected to a chair seat section, and the upper back supporting piece and the lower back supporting piece can be arranged at an extending position, a partially opening position or a folding position relative to each other. The upper back support is folded onto the lower back support and includes an angled edge to minimize the overall shape while still providing support. The lower back support includes a beam to further support the user when the chair is in its partially open position. The chair seat section comprises a rotating assembly, so that different seat environments are facilitated, and the enjoyment of a chair user is improved. The chair may be locked to a folded position for stowing and transportation, and further includes a carrying belt. The foldable armrests provide additional comfort for the chair user. Preferably, in its extended position, the back support is reclined between 90 degrees and 180 degrees relative to the seat section.

Description

Technical Field

[0001] The present invention relates to portable chairs and, more particularly, to foldable chairs that are secured to bleachers and other types of stadium seating. Background Art

[0002] Portable stadium chairs (also known as stadium seats or bleacher seats) are well known and commonly used by people attending sporting events or other large events held in stadiums, gyms, venues, parks, and sports fields. Typically, these venues have tiered seating arrangements, usually consisting of bleachers, benches, or grandstands. Spectators sit on benches, bleachers, or grandstands to watch a game, performance, competition, or other type of sporting, musical, or theatrical event. Sitting on such surfaces for hours on end can be very uncomfortable, which has led to the need for portable and comfortable stadium chairs.

[0003] Supportive, portable stadium chairs currently on the market are designed to support the user's lower back and hips during performances that can sometimes last several hours. These chairs are widely available at online retail sites and community sporting goods stores. Typically, these chairs fold up for portability from venue to venue and consist of a hinged metal back frame and seat frame covered in a durable fabric. Additionally, a pair of L-shaped metal arms extend from the front edge of the seat portion of the chair and, when in use, hook over the edge of a bench or bleacher to prevent the chair from accidentally sliding off the bench during use, especially when the user leans back. While currently available chairs provide some relief, they leave room for improvement in terms of enhancing user comfort, improving the functionality of the chair, and increasing the stability and safety of the chair during use. Utility Model Content

[0004] In order to solve the above technical problems, the present invention provides a portable chair, the specific solution is as follows:

[0005] A portable chair that cooperates with benches, bleachers, slatted seats, and other stadium seating includes additional comfort, safety, and adjustability features, and can be folded for portability and storage when not in use. The chair unfolds and folds between at least three standard positions: an extended position, a partially opened position, and a folded position. The chair includes an upper back support that folds down onto a lower back support. Both the upper and lower back supports also fold down together onto the seat section, making the chair easily portable and stowable. The seat section of the chair includes an upper back frame and a lower back frame that are connected by a swivel assembly to allow the user to swivel while comfortably seated in the chair and to allow the chair to cooperate with a wider variety of benches, bleachers, and slatted seats.

[0006] The upper back support and the lower back support include upper and lower back frame sections pivotally attached at a back joint and a covering extending across these frames and providing support for the user's back. Optionally, the covering includes an attached headrest or headrest. Similarly, the seat section is pivotally attached to the lower back frame at a seat joint and includes a cushion that is attached to or optionally covers the upper back frame to provide a comfortable place for the user to sit. Optionally and preferably, a pair of folding armrests are also pivotally connected at one end to the lower back frame section of the lower back support and at their other ends to the upper back frame of the seat section. Preferably, the armrests also include one or more joints to facilitate the armrests opening and closing and to ensure that the armrests remain compact when the chair is in its folded position.

[0007] The lower back frame is configured to rest on the upper surface of a bench, bleacher, or slatted seat. Optional non-slip feet can be attached to the lower back frame, and a pair of brackets and, optionally and preferably, a pair of seat straps are also attached to the lower back frame. The non-slip feet prevent the seat from slipping during use, and the brackets are configured to hook around the edge of a bench, bleacher, or slatted seat during use. Optional seat straps are configured to attach and tighten beneath the bench, bleacher, or slatted seat to enhance safety and stability. Preferably, the user engages the brackets and seat straps when using the chair, thereby further enhancing the stability of the chair.

[0008] Optional and preferred additional features of the chair include a carrying strap, preferably a backpack-style strap connected to the lower back frame and the lower backrest frame, and a lock that secures the chair in its folded position when transported. To use the chair, the spectator preferably uses the carrying strap to carry the chair to the viewing location, then unlocks the lock and unfolds the chair. The bracket and seat straps can be used to secure the chair to a bench, bleachers, or slats, and then the chair can be used in a partially open or extended position, depending on the spectator's needs. When finished using the chair, the spectator can fold the chair back into its compact, folded state, engage the lock, and use the carrying strap to carry the chair away.

[0009] The beneficial effects of the utility model are:

[0010] 1. It can support the user's upper back and neck while remaining foldable, portable and stowable.

[0011] 2. Rotatable and can be oriented in a variety of ways to accommodate a wide variety of stadium seats, benches, bleachers and similar slatted seating.

[0012] 3. It comes with additional safety features to prevent slipping and tilting under various conditions.

[0013] 4. It can also be used with a shorter backrest when a full backrest is not needed. This portable stadium chair will be a major advancement in the field of seating settings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. Among them:

[0015] Figure 1 1 is a perspective view of the portable stadium chair according to the first embodiment of the present invention in an extended position.

[0016] Figure 2 is a perspective view of the portable stadium chair of the first embodiment of the present invention in a partially opened position.

[0017] Figure 3 It is an exploded perspective view of several frame components of the portable stadium chair according to the first embodiment of the present invention.

[0018] Figure 4 FIG1 is a first perspective view of the portable stadium chair according to the first embodiment of the present invention in a folded position.

[0019] Figure 5 2 is a second perspective view of the portable stadium chair according to the first embodiment of the present invention.

[0020] Figure 6 FIG. 1 is a perspective view of a portable stadium chair according to a second preferred embodiment of the present invention in an extended position.

[0021] Figure 7 1 is a top view of the portable stadium chair according to the second embodiment of the present invention in a folded position.

[0022] Figure 8 It is a bottom view of the portable stadium chair of the second embodiment of the present invention in the folded position.

[0023] Figure 9 It is a perspective view of a chair joint of a portable stadium chair according to a second embodiment of the present invention.

[0024] Figure 10 The portable stadium chair, which is a second embodiment of the present invention, is shown in perspective view in use, when the portable stadium chair is intended to be attached to bleachers or benches.

[0025] Figure 11 FIG. 1 is a partial side view of the portable stadium chair according to the second embodiment of the present invention, showing the locking mechanism engaged.

[0026] 100. Stadium chair, 101. Slatted seating surface, 2. Lower back support, 4. Upper back support, 5. Seat section, 6. Armrest, 6a. Upper armrest, 6b. Lower armrest, 48. First armrest joint, 46. Second armrest joint, 7. Third armrest joint, 18. Backrest joint, 18a. Second end of upper back frame side section, 18b. First end of lower back frame side section, 8. Seat joint, 8a. Second end of lower back frame side section, 8b. Second end of upper seat frame side section, 8c. Defining slot, 8d. Pin, 22. Back cover, 22a. Padded section, 24. Upper back frame, 24a. Upper back frame side section, 24b. Upper back frame back connector, 24c. Upper back frame cross section, 26. Lower back Frame, 26a, lower seat back frame side section, 26b, lower seat back frame elbow, 26c, lower seat back frame cross section, 20, headrest, 20a, headrest edge, 32, upper seat frame, 32a, upper seat frame side section, 32b, upper seat frame end section, 32c, upper seat frame cross beam, 32d, upper seat frame connector, 16, seat cushion, 14, lower seat frame, 14a, lower seat frame side section, 14b, lower seat frame end section, 14c, lower seat frame cross beam, 14d, anti-slip foot, 14e, channel, 10, first bracket, 12, second bracket, 30, seat rotation assembly, 60, seat belt, 62, first buckle, 38, backpack strap, 70, lock assembly, 72, first locking belt, 74, second locking belt, 76, second buckle. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the present invention more clearly understood, the following detailed description of the specific embodiments of the present invention is given in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1

[0030] like Figures 1 to 10As shown, the present invention is a portable chair 100 configured to cooperate with benches, bleachers, and other stadium seating that can be folded for transport and stored when not in use. The preferred embodiment as shown and described herein is sized to cooperate with bleachers, benches, and similar slatted seating surfaces 101 having a variety of thicknesses T and depths D. Figures 1 to 2 and Figures 4 and 5 The standard positions of the portable chair 100 of the first embodiment are shown: an extended position, a partially opened position, and a folded position. Figure 3 The frame portion of the portable chair 100 is shown, and Figure 9 A preferred embodiment of the connection point 8 between the lower seatback frame 26 and the seat frame 32 is shown. Figures 6 to 8 A second preferred embodiment of a portable chair 100 is shown, which has additional stability features and comfort features. Figure 10 The portable chair 100 of the preferred embodiment is shown as it is intended for use on a slatted seating surface 101 .

[0031] like Figures 1 to 5 As shown, the portable chair 100 has an upper back support 4 and a lower back support 2 and a seat section 5. Figure 1 In the extended position shown, the upper back support 4 is located above the lower back support 2 and extends substantially along the same plane as the lower back support, and both the upper back support and the lower back support are located above and slightly or substantially perpendicular to the seat section 5. In other words, in its extended position, the seat section 5 protrudes from the upper back support 4 and the lower back support 2. The upper back support 4 is attached to the lower back support 2 at the back joint 18, and the lower back support 2 is attached to the seat section 5 at the seat joint 8. Preferably, both the back joint 18 and the seat joint 8 are joints that allow the portable chair 100 to be used as a portable chair. Figure 2 、 Figure 4 and Figure 5 4 and 5. Optionally, the seat section 5 is further connected to the lower back support 2 at first armrest joints 46 and second armrest joints 48 using armrests 6. The armrests 6 are further folded at third armrest joints 7 as shown. The portable chair 100 can be partially folded by pivoting the upper back support 4 to a position where it is close to or substantially parallel to the lower back support 2. The portable chair 100 can also be fully folded or collapsed by subsequently folding the upper back support 4 and the lower back support 2 so that they are close to or substantially parallel to the seat section 5, as shown. Figure 4 and Figure 5As shown. Preferably, when folded, the upper back support 4 fits at least partially, and preferably substantially, between the seat section 5 and the lower back support 2. Additional details regarding each of these sections are as follows. As used herein, the term "substantially" is a modifier meaning "approximately," "to a large extent," and "mostly," rather than "perfectly."

[0032] The upper back support 4 and the lower back support 2 include an upper seat back frame 24 and a lower seat back frame 26 that are preferably covered by a common cover 22, such as Figure 1 and Figure 6 As shown. The cover 22 can be made of any material or fabric that is strong enough to support the user's back when the user leans back, and is preferably a non-stretchy weather-resistant material. More preferably, the cover 22 is made of a durable, waterproof and lightweight material such as 300D Oxford nylon cloth. Other suitable materials include polyester, canvas, nylon ripstop, polypropylene, vinyl-coated polyester, mesh fabric, and other materials from Invista North America, LLC of Delaware. Glen Raven, North Carolina Synthetic fibers and environmentally friendly fabrics such as recycled polyethylene terephthalate. The cover 22 is attached to or around the upper back frame 24 and the lower back frame 26 at intervals. Preferably, the upper back frame 24 and the lower back frame 26 extend through pockets or slots (not labeled) formed along the edges of the cover 22. Alternatively, the cover 22 can be secured to the upper back frame 24 and the lower back frame 26 using rivets, screws or other fasteners. More preferably, portions of the upper back frame 24 and the lower back frame 26 remain exposed or unmasked by the cover 22, as shown. Optionally and preferably, the cover 22 includes a padded section 22a that extends across the upper back support area and the lower back support area of ​​the cover 22, as shown. The padded section 22a can include foam or other material that provides additional cushioning for the user. Optionally and preferably, the headrest 20 is also preferably attached to the cover 22 along one headrest edge 20 a so that the headrest can be positioned to rest on the cover 22 as shown or to rest behind the cover 22 when the user does not want to use the headrest 20. Alternatively, the headrest 20 can be secured in a fixed position relative to the cover 22.

[0033] 1. In Figure 324 and the lower seat back frame 26 are shown without the cover 22. The upper seat back frame 24 and the lower seat back frame 26 can be made of any strong material, such as metal, wood or plastic. Preferably, the upper seat back frame 24 and the lower seat back frame 26 are made of aluminum. The upper seat back frame 24 preferably includes a plurality of substantially parallel upper seat back frame side sections 24a that are connected at a first end (not labeled) by an upper seat back frame cross section 24c. Preferably, an upper seat back frame back connector 24b connects the upper seat back frame side sections 24a to the upper seat back frame cross section 24c. The upper seat back frame back connector 24b can be a standard corner, such as Figure 1 As shown, and preferably, the upper seatback frame seatback connection 24b is an inclined edge or frame section, such as Figure 6 As shown. The angled frame sections 24b extend toward each other at an obtuse angle relative to the upper back frame side sections 24a and preferably extend in the same plane as the upper back frame side sections 24a and the upper back frame cross sections 24c. Making the upper back frame seatback connector 24b an angled edge or frame section reduces the overall weight of the portable chair 100 while also improving sightlines for spectators who may be sitting behind the portable chair 100. Preferably, the angled edge of the upper back frame connector 24b mimics the body shape of its user. The second end 18a of the upper back frame side section is configured to connect to the lower back frame 26 at the seatback joint 18.

[0034] The lower back frame 26 preferably includes a plurality of substantially parallel lower back frame side sections 26a connected together near the first ends 18b of the lower back frame side sections by a lower back frame cross section 26c. It further includes an integrally formed lower back frame elbow 26b near the second end 8a of each lower back frame side section. The lower back frame elbow 26b is used to offset the lower back frame 26 sufficiently to accommodate the upper back frame 24 when the upper back frame 24 is in the partially open position. In other words, when the upper back frame 24 is Figure 2When folded down as shown, the upper back frame 24 is offset by the lower back frame elbow 26b a sufficient distance so that the user can still comfortably use the portable chair 100. The lower back frame elbow 26b also allows sufficient space for the upper back frame 24 to rest between the lower back frame 26 and the seat section 5 when the portable chair 100 is in its folded position. The first end 18b of the lower back frame side section is configured to connect to the upper back frame 24 at the back joint 18, and the second end 8a of the lower back frame side section is configured to connect to the upper seat frame 32 at the seat joint 8. Optionally, each lower back frame side section 26a further includes a lower back frame connection 26d at which an optional armrest 6 can be pivotally attached to the lower back frame side section 26a. The lower seatback frame connection 26d preferably receives and houses a hinge pin or other fastener that allows the armrest 6 to pivot when the portable chair 100 is opened and closed.

[0035] The back joint 18 may be a joint that connects the upper back frame 24 to the lower back frame 26 and allows the upper back frame 24 to be moved in a Figure 1 and Figure 6 The chair is shown in the open position. Figures 4 and 5 any connection that pivots between the folded states of the chair as shown. For example, the back joint 18 can be a folding hinge assembly and optionally include a ratchet mechanism. Alternatively, the back joint 18 can be a cover hinge assembly, a pivot hinge assembly, a continuous hinge, a piano hinge assembly, a butt hinge assembly, or a knife hinge assembly. Preferably, the hinge assembly selected for the back joint 18 includes a certain resistance or one or more limits to prevent accidental over-extension of the upper back frame 24 and optionally allow adjustability. More preferably, the back joint 18 is a butt hinge that includes a second end 18a of an upper back frame side section and a first end 18b of a lower back frame side section, these mating ends being openable to 180 degrees and connected using a pin, rod, screw or other fastener that allows these mating ends to pivot relative to each other.

[0036] The seat section 5 includes a seat cushion 16 attached to an upper seat frame 32, a rotating assembly 30 attached to the upper seat frame 32, and a lower seat frame 14 attached to the rotating assembly 30. The seat cushion 16 is preferably a foam cushion surrounded by the same fabric or material used for the cover 22. More preferably, the seat cushion is a polyurethane foam pad, which is durable, compression-resistant, versatile, affordable, and easy to maintain. Other suitable materials for the seat cushion 16 include quick-drying or other open-cell foams, foams with antimicrobial properties, closed-cell foams, combined quick-drying closed-cell foams, and chip foam or recycled polyester. The seat cushion 16 can have a flat surface, as shown, on which the user sits, or it can be contoured to enhance comfort. Preferably, the seat cushion is attached to the upper seat frame 32 so that the upper seat frame 32 is at least partially covered by the seat cushion 16.

[0037] The upper seat frame 32 includes parallel upper seat frame side sections 32a connected at a first end (not labeled) by an upper seat frame end section 32b. Parallel to the upper seat frame end sections 32b are one or more upper seat frame cross beams 32c that also connect the upper seat frame side sections 32a. Preferably, the upper seat frame 32 includes at least two upper seat frame cross beams 32c, and the upper seat frame cross beams 32c further define openings (not labeled) for receiving fasteners (not shown) that can be used to connect the upper seat frame cross beams 32c to other seat components (generally and specifically to the seat rotation assembly 30), such as Figure 3 As shown. The second end 8b of the upper seat frame side section is configured to connect to the lower seat back frame 26 at the seat joint 8. Optionally, each upper seat frame side section 32a further includes an upper seat frame connector 32d at which an optional armrest 6 can be pivotally attached to the upper seat frame side section 32a. The upper seat frame connector 32d preferably receives and houses a hinge pin.

[0038] The seat joint 8 may be a joint that connects the lower seat back frame 26 to the upper seat frame 32 and allows the lower seat back frame 26 to be moved in a Figure 1 and Figure 6 The chair is shown in the open position. Figures 4 and 5The seat joint 8 preferably includes any connection that pivots between the folded positions of the chair shown. The seat joint 8 preferably includes a ratchet mechanism that also allows the lower back support 2 and the upper back support 4 to be oriented at a plurality of different angles relative to the seat section 5, ranging from 90 degrees to 180 degrees. More preferably, the seat joint 8 facilitates a first backrest position in which the upper back support 4 and the lower back support 2 are oriented at a 97-degree angle relative to the seat section 5, and a second backrest position in which the upper back support 4 and the lower back support 2 are oriented at a 107-degree angle relative to the seat section 5. For example, the seat joint 8 can be a folding hinge assembly, optionally including a ratchet mechanism. Alternatively, the seat joint 8 can be a cover hinge assembly, a pivot hinge assembly, a continuous hinge, a piano hinge assembly, a butt hinge assembly, or a knife hinge assembly. The hinge assembly selected for the seat joint 8 preferably includes a resistance or one or more stops to prevent unintended overextension of the lower back frame 26 and optionally allow for adjustability. In one embodiment, the seat joint 8 is a butt hinge assembly in which the lower back frame 26 and the upper seat frame 32 include mating ends (such as the second end 8a of the lower back frame side section and the second end 8b of the upper seat frame side section in this embodiment) that can be opened to 180 degrees and connected using pins, rods, screws or other fasteners that allow these mating ends to pivot relative to each other, such as Figures 1 to 5 Alternatively, the seat joint 8 is a hinge assembly in which a defined slot 8c on the lower seat back frame 26 is formed, as shown in FIG. Figure 9 As shown, the slot pivots about and slides relative to a pin 8d on the upper seat frame 32.

[0039] The armrest 6 is preferably a folding armrest as shown, having an upper armrest 6a and a lower armrest 6b connected to the lower back frame 26 by a first armrest joint 48, to the upper seat frame 32 by a second armrest joint 46, and to each other by a third armrest joint 7. The first armrest joint 48 and the second armrest joint 46 are preferably hinge pins that extend through the upper armrest 6a and the lower armrest 6b and extend into receiving portions in the lower back frame 26 and the upper seat frame 32 so that the upper armrest 6a and the lower armrest 6b can easily pivot as the portable chair 100 is opened and closed. The third armrest joint 7 can be any connection that pivotally connects the upper armrest 6a and the lower armrest 6b to each other so that the upper armrest 6a and the lower armrest 6b can be moved when the portable chair 100 is in a position such as Figure 1 and Figure 6 The portable chair 100 is in its open position as shown and is used when the portable chair 100 is in the Figures 4 and 5The third armrest joint 7 is compactly folded in its folded position as shown. For example, the third armrest joint 7 can be a folding hinge assembly, a cover hinge assembly, a pivot hinge assembly, or a knife hinge assembly. Preferably, the hinge assembly selected for the armrest joint 7 includes a certain resistance or one or more limiters to prevent the upper armrest 6 from over-extending or folding when in use. Preferably, the third armrest joint 7 is a pivot hinge assembly, which includes mating ends (not labeled) that are connected by pins, rods, screws or other fasteners that allow the mating ends to pivot relative to each other.

[0040] The lower seat frame 14 of the seat section 5 is connected to the upper seat frame 32 via the seat rotation assembly 30. The lower seat frame 14 includes parallel lower seat frame side sections 14a that are connected to each other at one or more lower seat frame end sections 14b that are preferably located at opposite ends of the lower seat frame side sections 14a, as shown in FIG. Figure 3 As shown. Preferably, one or more lower seat frame cross beams 14c extend parallel to the lower seat frame side sections 14a and connect the lower seat frame end sections 14b. More preferably, at least two lower seat frame cross beams 14c connect the lower seat frame end sections 14b to each other, and the lower seat frame cross beams 14c define openings (not labeled) for accommodating fasteners (not shown) that can be used to connect the lower seat frame cross beams 14c to the rotating assembly 30. In addition, the lower seat end sections 14b are preferably provided with one or more channels 14e extending therethrough to accommodate anchors or brackets (first bracket 10 and second bracket 12 are selected in this embodiment), as shown. Optionally, a plurality of anti-skid feet 14d can be attached to the lower seat frame 14. The anti-skid feet 14d help prevent the lower seat frame 14 from slipping, turning, or otherwise moving when the portable chair 100 is in use. Alternatively, the overall size or footprint of the lower seat frame 14 may be larger or smaller than the overall size or footprint of the upper seat frame 32 .

[0041] The seat rotation assembly 30 is configured to allow the upper seat frame 32 to rotate 360 ​​degrees relative to the lower seat frame 14. The seat rotation assembly is preferably a zero-degree tilt, non-locking, ball-bearing type seat rotator with mounting holes, such as the one from Anji Meiyi Office Furniture Co., Ltd. in China. Rotation Plate. The seat rotation assembly 30 allows the user to rotate the upper and lower back supports 4 and 2 relative to the lower seat frame 14, which remains stationary when secured to the bench or bleachers. Portions of the seat rotation assembly 30 are fixedly attached to the upper seat frame 32, preferably at two locations on each of the upper seat frame's crossbars 32c. Similarly, mating portions of the seat rotation assembly 30 are fixedly attached to the lower seat frame 14, preferably at two locations on each of the lower seat frame's crossbars 14c.

[0042] Preferably, if Figure 1 As shown, the anchor assembly is connected to the lower seat frame 14. In one embodiment, the anchor assembly includes a first bracket 10 and a second bracket 12, which are attached to the lower seat frame 14. The first bracket 10 and the second bracket 12 are preferably L-shaped rods that are connected to or extend through the lower seat back frame end section 14b so that the rods can be as shown. Figure 5 As shown, it pivots flat for storage and transport. Figure 1 Pivots to the fully extended position as shown to accommodate thicker seating surfaces, or as Figure 10 As shown, the first bracket 10 and the second bracket 12 are pivoted to a position between a flat and a fully extended position to accommodate seating surfaces of different thicknesses. The first bracket 10 and the second bracket 12 are used to prevent the portable chair 100 from excessive tipping and sliding when the chair is in use. The first bracket 10 and the second bracket 12 may also optionally include a non-slip coating or covering to enhance their effectiveness. In another embodiment, the anchor assembly includes a seat belt 60 that may be used alone or, more preferably, in conjunction with the first bracket 10 and the second bracket 12, as shown. Figure 5 and Figure 10 As shown. The seat belt 60 is preferably attached to the lower seat frame end section 14b. The seat belt 60 also preferably includes a first buckle 62 that allows the belt to be connected and tightened below the slatted seat surface 101 to further prevent the chair from slipping and tilting during use. Figure 5 As shown, the seat straps 60 are preferably positioned so that they can also hold the first and second brackets 10 , 12 in place around the edge of the slatted seating surface 101 .

[0043] The carrying strap is used to secure the lower back support 2 to the seat section 5, preferably to the seat section 5 along the lower back frame end section 26c, and in this embodiment, a backpack strap 38 is selected, preferably an adjustable backpack strap, and preferably an adjustable backpack strap including a padded portion (not marked). It is also preferred that the backpack strap 38 is attached to a frame member of the seat section 5, or more preferably attached to the seat joint 8. In addition, a lock assembly 70 is attached to the lower seat frame 14 and the lower back frame 26, so that the lock assembly 70 can lock the portable chair 100 in the folded position when the user engages the lock. In a preferred embodiment, the lock assembly includes a first lock strap 72 attached to the lower seat frame 14 near the first bracket 10 and the second bracket 12, a second lock strap 74 attached to the lower back frame cross section 26c, and a second buckle 76 configured to releasably attach the first lock strap 72 and the second lock strap 74 to each other, as shown in FIG. Figure 11 shown.

[0044] In another embodiment, the lower seat back frame includes: a first lower seat back frame side section, which is connected to the seat section at a seat joint; a second lower seat back frame side section, which is basically parallel to the first lower seat back frame side section, the second lower seat back frame side section is positioned at a certain distance and is connected to the seat section at the seat joint; and a lower seat back frame cross section, which connects the first lower seat back frame side section to the second lower seat back frame side section.

[0045] The first lower seat back frame side section includes a first elbow integrally formed in the first lower seat back frame side section near the seat joint, and the second lower seat back frame side section includes a second elbow integrally formed in the second lower seat back frame side section near the seat joint, and when the portable chair is in the folded state, the first elbow and the second elbow are each configured to increase the space between the lower back support and the seat section to accommodate the upper back support.

[0046] The upper seat back frame includes: a first upper seat back frame side section, which is connected to the first lower seat back frame side section at a first seat back joint; a first upper seat back frame connector section, which is connected to the first upper seat back frame side section; a second upper seat back frame side section, which is substantially parallel to the first upper seat back frame side section, the second upper seat back frame side section is positioned at a certain distance and is connected to the second lower seat back frame side section at a second seat back joint; a second upper seat back frame connector section, which is connected to the second upper seat back frame side section; and an upper seat back frame cross section, which connects the first upper seat back frame connector section to the second upper seat back frame connector section.

[0047] The first upper seat back frame connecting member section includes a first inclined frame section, and the angle formed by the first inclined frame section and the first upper seat back frame side section is an obtuse angle. The second upper seat back frame connecting member section includes a second inclined frame section, and the angle formed by the second inclined frame section and the second upper seat back frame side section is an obtuse angle.

[0048] When the portable chair is in the extended state, the angle between the seat section and the lower back support is between 90° and 180°, preferably between 90° and 110°.

[0049] The carrying strap includes a first backpack strap connected at opposite ends to the lower seat back frame cross section and the seat joint, and a second backpack strap connected at opposite ends to the lower seat back frame cross section and the seat joint.

[0050] Because the portable chair 100 can be folded, rotated, and securely attached to benches, bleachers, and slatted seating surfaces, users can easily store the chair, carry it through crowded venues, and quickly and easily deploy it for a comfortable and supportive seating experience while watching at a park, sports field, or venue. Figures 4 and 5 and Figures 7 and 8As shown, the spectator can transport the chair using the backpack straps 38. Once the spectator reaches their destination, they can unlock the lock assembly 70 and then unfold the seat section 5 downward and away from the upper back support 4 and lower back support 2. The spectator preferably unfolds the first and second brackets 10, 12 downward and hooks the brackets around the front edge of the bench, bleachers, or slats where the spectator wishes to sit comfortably. If the bench, bleachers, or slats are configured so that the brackets cannot be used around the front edge of the bench, or if the spectator simply prefers not to hook the brackets around the front edge of the bench, the upper seat frame 32 can be rotated 180 degrees relative to the lower seat frame 14, allowing the spectator to hook the first and second brackets 10, 12 around the rear edge of the bench, bleachers, or slats, or the spectator can alternatively choose to use the seat straps 60. After the spectator has engaged the first and second brackets 10, 12, the spectator can also secure the seat straps 60 underneath the bench, bleachers, or slats for additional stability and firmness. After securing the seat to the bench, bleachers, or slats as desired, the spectator can then use the portable chair 100 in its partially unfolded state, where additional cushioning is provided by the stacked upper and lower back supports 4, 2, and the supportive lower chair back frame cross section 26c. Alternatively, the spectator can further unfold the chair by folding the upper back support 4 upward so that it is aligned with the lower back support 2, as shown in FIG. Figure 1 and Figure 6 In its extended position, the portable chair 100 provides additional support for the spectator's head, neck, and back. Additionally, because the chair is rotatable, spectators can easily turn from side to side while watching a game, show, or other event. When spectators are ready to leave the event, they can reverse the above steps to fold the portable chair 100 into its original position. Figures 4 and 5 and Figures 7 and 8 In the compact folded position shown, the lock assembly 70 is engaged and the backpack straps 38 are once again used to carry the portable chair 100 through a crowd.

[0051] A portable chair for use on a slatted seat having an extended state, a partially opened state, and a collapsed state, and comprising:

[0052] a seat section, the seat section includes an upper seat back frame and a seat cushion attached to the upper seat back frame;

[0053] b. a lower back support pivotally connected to the seat section, wherein the seat section projects from the lower back support when in the extended and partially opened positions and is substantially parallel to the lower back support when the portable chair is in the folded position, the lower back support comprising:

[0054] 1) a first lower back frame side section connected to the upper back frame at a seat joint;

[0055] II) a second lower back frame side section positioned substantially parallel to the first lower back frame side section at a spaced distance and connected to the upper back frame at a seat joint;

[0056] III) a lower back frame cross section connecting the first lower back frame side section to the second lower back frame side section;

[0057] c. an upper back support pivotally connected to the lower back support at a first back joint, wherein the upper back support is substantially aligned with the lower back support when the portable chair is in the extended position and substantially parallel to the lower back support when the portable chair is in the partially open position, the upper back support comprising:

[0058] 1) a first upper seatback frame side section connected to the first lower seatback frame side section at a first seatback joint;

[0059] II) a first upper seatback frame connector section connected to the first upper seatback frame side section;

[0060] III) a second upper back frame side section positioned substantially parallel to the first upper back frame side section at a spaced distance and connected to the second lower back frame side section at a second back joint; IV) a second upper back frame connector section connected to the second upper back frame side section;

[0061] V) an upper seatback frame cross section connecting the first upper seatback frame connector section to the second upper seatback frame connector section;

[0062] d. a cover attached to the upper and lower seatback frames;

[0063] e. a carrying strap attached to the seat section;

[0064] f. An anchor assembly attached to the seat section, wherein the anchor assembly is configured to attach the portable chair to the slatted seat.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A portable chair, characterized in that: The portable chair has an extended state, a partially opened state, and a folded state, and comprises: a. Lower back support; b. an upper back support pivotally connected to the lower back support at a backrest joint, wherein the upper back support is substantially aligned with the lower back support when the portable chair is in the extended position and substantially parallel to the lower back support when the portable chair is in the partially opened position; c. a seat section pivotally connected to the lower back support at a seat joint, wherein the seat section protrudes from the lower back support when the portable chair is in the extended position and the partially opened position, and wherein the seat section is substantially parallel to the lower back support when the portable chair is in the folded position; d. A carrying strap attached to the seat section.

2. The portable chair according to claim 1, characterized in that wherein when the portable chair is in the folded position, the upper back support is at least partially mounted between the seat section and the lower back support.

3. The portable chair according to claim 2, characterized in that The seat section comprises: a. An upper seat frame, wherein the upper seat frame is rotatably connected to the lower back support member; b. Lower seat frame, the lower seat frame is connected to the upper seat frame via a rotating assembly; c. A seat cushion attached to the upper seat frame.

4. The portable chair according to claim 3, characterized in that The seat section further includes an anchor assembly attached to the lower seat frame.

5. The portable chair according to claim 4, characterized in that The anchor assembly includes at least two brackets.

6. The portable chair according to claim 4, characterized in that Wherein the anchor assembly comprises a strap.

7. The portable chair according to claim 4, characterized in that The anchor assembly includes at least two brackets and a belt.

8. The portable chair according to claim 2, wherein: The lower back support includes a lower seatback frame, the upper back support includes an upper seatback frame, and the portable chair further includes a cover attached to the upper seatback frame and the lower seatback frame.

9. The portable chair according to claim 8, characterized in that The lower seat back frame comprises: a first lower seat back frame side section, the first lower seat back frame side section is connected to the seat section at the seat joint; b. a second lower seatback frame side section, the second lower seatback frame side section being substantially parallel to the first lower seatback frame side section, the second lower seatback frame side section being positioned at a spaced distance and connected to the seat section at a seat joint; c. A lower back frame cross section connecting the first lower back frame side section to the second lower back frame side section.

10. The portable chair according to claim 9, characterized in that The first lower seat back frame side section includes a first elbow integrally formed in the first lower seat back frame side section near the seat joint, and the second lower seat back frame side section includes a second elbow integrally formed in the second lower seat back frame side section near the seat joint, and when the portable chair is in the folded state, the first elbow and the second elbow are each configured to increase the space between the lower back support and the seat section to accommodate the upper back support.

11. The portable chair of claim 9, wherein the upper seat back frame comprises: a first upper seatback frame side section, the first upper seatback frame side section is connected to the first lower seatback frame side section at a first seatback joint; b. a first upper seatback frame connector section connected to the first upper seatback frame side section; c. a second upper seatback frame side section, the second upper seatback frame side section being substantially parallel to the first upper seatback frame side section, the second upper seatback frame side section being positioned at a spaced-apart distance and connected to the second lower seatback frame side section at a second seatback joint; d. a second upper seatback frame connector section connected to the second upper seatback frame side section; e. An upper seatback frame cross section connecting the first upper seatback frame connector section to the second upper seatback frame connector section.

12. The portable chair according to claim 11, characterized in that: The first upper seat back frame connecting member section includes a first inclined frame section, and the angle formed by the first inclined frame section and the first upper seat back frame side section is an obtuse angle. The second upper seat back frame connecting member section includes a second inclined frame section, and the angle formed by the second inclined frame section and the second upper seat back frame side section is an obtuse angle.

13. The portable chair according to claim 10, wherein: The portable chair further includes a lock assembly, wherein the lock assembly attaches a lower seat frame to the lower seatback frame cross section when the portable chair is in the folded position and the lock assembly is engaged.

14. The portable chair according to claim 13, wherein: The conveyor belt comprises: a first backpack strap, the first backpack strap is connected to the lower chair back frame cross section and the seat joint at opposite ends; b. A second backpack strap connected at an opposite end to the lower seatback frame cross section and the seat joint.

15. The portable chair according to claim 1, wherein When the portable chair is in the extended state, the angle between the seat section and the lower back support is between 90° and 180°.

16. The portable chair according to claim 15, wherein: When the portable chair is in the extended state, the angle between the seat section and the lower back support is between 90° and 110°.

17. A portable chair for use on a slatted seat, characterized in that It has an extended state, a partially opened state, and a folded state, and includes: a seat section, the seat section includes an upper seat back frame and a seat cushion attached to the upper seat back frame; b. a lower back support pivotally connected to the seat section, wherein the seat section projects from the lower back support when in the extended and partially opened positions and is substantially parallel to the lower back support when the portable chair is in the folded position, the lower back support comprising: 1) a first lower back frame side section connected to the upper back frame at a seat joint; II) a second lower back frame side section positioned substantially parallel to the first lower back frame side section at a spaced distance and connected to the upper back frame at a seat joint; III) a lower back frame cross section connecting the first lower back frame side section to the second lower back frame side section; c. an upper back support pivotally connected to the lower back support at a first back joint, wherein the upper back support is substantially aligned with the lower back support when the portable chair is in the extended position and substantially parallel to the lower back support when the portable chair is in the partially open position, the upper back support comprising: 1) a first upper seatback frame side section connected to the first lower seatback frame side section at a first seatback joint; II) a first upper seatback frame connector section connected to the first upper seatback frame side section; III) a second upper back frame side section positioned substantially parallel to the first upper back frame side section at a spaced distance and connected to the second lower back frame side section at a second back joint; IV) a second upper back frame connector section connected to the second upper back frame side section; V) an upper seatback frame cross section connecting the first upper seatback frame connector section to the second upper seatback frame connector section; d. a cover attached to the upper and lower seatback frames; e. a carrying strap attached to the seat section; f. An anchor assembly attached to the seat section, wherein the anchor assembly is configured to attach the portable chair to the slatted seat.

18. A portable chair for use on slatted seating according to claim 17, wherein The seat section further includes a lower seat back frame connected to the upper seat back frame by a rotating assembly.

19. A portable chair for use on slatted seating according to claim 17, wherein The portable chair further includes a lock, wherein the lock connects a lower seat frame to a crossbar of the lower seatback frame when the lock is engaged and the portable chair is in the folded position.

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