Portable chair

Abstract

A portable chair can include a first front leg, a first rear leg pivotally connected to the first front leg, a second front leg, a second rear leg pivotally connected to the second front leg, a seat support assembly, and a seat assembly. The seat support assembly can be connected to the first front leg and the first rear leg. The seat assembly can be releasably connected to the seat support assembly. The seat support assembly can include a front seat support pivotally connected to the first front leg, a rear seat support pivotally connected to the first rear leg, and a strut extending between the first front seat support and the first rear seat support. The seat assembly can include a pair of seat side rails and a seat fabric extending between the pair of seat side rails. The portable chair can have a use configuration and a collapsed configuration.

Description

[0001] Cross-references to related applications This application claims priority and benefit to U.S. Patent Application No. 18 / 594,621, filed March 4, 2024. The entire contents of the above-listed applications are incorporated herein by reference for any and all non-limiting purposes. Technical Field

[0002] This disclosure relates to portable chairs. More specifically, aspects of this disclosure relate to portable and foldable chairs that can be adjusted for multiple seating positions. Background Technology

[0003] Portable chairs are often used during events and activities where seating is needed but not always provided, such as picnics, camping trips, beach outings, and other outdoor activities. In most cases, the chairs may be uncomfortable, and the ability to adjust the seat position is limited. Additionally, the chairs may have poor durability, reducing their long-term usability. Therefore, user satisfaction with some portable chairs is low, and they are replaced frequently. Summary of the Invention

[0004] The following is a simplified overview of the various aspects described herein. This overview is not a comprehensive summary and is not intended to identify key or important elements or define the scope of the claims. The following overview presents some concepts in a simplified form as an introduction to the more detailed description provided below.

[0005] This disclosure relates to a portable chair comprising: (a) a first front leg; (b) a first rear leg pivotally connected to the first front leg; (c) a second front leg; (d) a second rear leg pivotally connected to the second front leg; and (e) a first seat support assembly connected to the first front leg and the first rear leg. The first seat support assembly may include: a first front seat support pivotally connected to the first front leg; a first rear seat support pivotally connected to the first rear leg; and a first pillar extending between the first front seat support and the first rear seat support. A seat assembly may be releasably connected to the first seat support assembly, wherein the seat assembly includes: (a) a pair of seat side rails; (b) a seat rear rail extending between the pair of seat side rails; and (c) a seat fabric extending between the pair of seat side rails. The first seat side rail of the pair of seat side rails may be supported by the first front seat support and the first rear seat support. The portable chair may also have a usability configuration and a folding configuration. A first pillar may be located inside a first seat side rail. The first pillar may be substantially parallel to the first seat side rail. A first front seat support may include a support surface having a concave shape and supporting the first seat side rail. The first front seat support may also include a hole located below the support surface and receiving a front pivot, wherein the front pivot pivotally connects the first front seat support and the first front support leg. A first rear seat support may include a support surface having a concave shape and supporting the first seat side rail. The first rear seat support may include a hole extending through the support surface and receiving a rear pivot, wherein the rear pivot pivotally connects the first rear seat support and the first rear support leg. The portable chair may further include: a backrest assembly pivotally connected to a first rear support leg and a second rear support leg, the backrest assembly including: a pair of backrest side rails; a backrest fabric extending between the pair of backrest side rails; a first armrest pivotally connected to the first backrest side rail of the pair of backrest side rails; and a second armrest pivotally connected to the second backrest side rail of the pair of backrest side rails. A first guide member may be pivotally connected to a first front support leg and a first rear support leg, and a second guide member may be pivotally connected to a second front support leg and a second rear support leg. The first armrest is movably connected to the first guide member, and the second armrest is movably connected to the second guide member. When the portable chair is in use configuration, the portable chair may have an upright position and a reclining position. The first armrest may include a set of internal receptacles that receive the first guide member, such that when the first guide member is in the rearmost receptacle of the set of internal receptacles, the portable chair is in the upright position. Furthermore, when the first guide is in the receiving section in front of the rearmost receiving section among a set of internal receiving sections, the portable chair is in a reclining position.The backrest assembly can be releasably connected to a pair of backrest couplings, wherein the upper portion of the first backrest coupling is inserted into an opening at the bottom of a first backrest side rail. The first backrest side rail can be secured to the first backrest coupling via an armrest pivot, which is also pivotally connected to a first armrest.

[0006] Other aspects of this disclosure may relate to a portable chair, the portable chair comprising: (a) a chair frame including: (1) a first front leg; (2) a second front leg; (3) a first rear leg connected to the first front leg; (4) a second rear leg connected to the second front leg; (5) a first seat support assembly including: a first front seat support including a first concave surface; and a first rear seat support including a first pin; and (6) a second seat support assembly including: a second front seat support including a second concave surface; and a second rear seat support including a second pin; (b) a seat assembly, comprising: (1) a first seat side rail including a first hole and a first convex portion, wherein the first hole is configured to releasably receive a first pin, and wherein a first concave surface is configured to releasably receive and support the first convex portion; (2) a second seat side rail including a second hole and a second convex portion, wherein the second hole is configured to releasably receive a second pin, and wherein a second concave surface is configured to releasably receive and support the second convex portion; and (3) a seat fabric extending between the first seat side rail and the second seat side rail. The chair frame may also include: a backrest assembly operatively connected to a first rear support leg and a second rear support leg. The backrest assembly may include: (a) a first backrest side rail; (b) a second backrest side rail; and (c) a backrest fabric extending between the first backrest side rail and the second backrest side rail. A first armrest may be connected to the first backrest side rail, and a second armrest may be connected to the second backrest side rail. A first guide member is pivotally connected to a first front support leg and a first rear support leg, and a second guide member is pivotally connected to a second front support leg and a second rear support leg. A first armrest is movably connected to the first guide member, and a second armrest is movably connected to the second guide member. A hook is pivotally connected to the first armrest, wherein the hook is releasably engaged with a portion of the chair frame to prevent the portable chair from unfolding when it is in a folded configuration. A first backrest side rail is releasably connected to a first backrest coupling member, and a second backrest side rail is releasably connected to a second backrest coupling member. The first backrest coupling member is operably connected to the first rear support leg, and the second backrest coupling member is operably connected to the second rear support leg. An upper protrusion of the first backrest coupling member can be inserted into the bottom of the first backrest side rail. The chair frame may further include: a first pillar and a second pillar, the first pillar extending between a first front seat support member and a first rear seat support member, and the second pillar extending between the second front seat support member and the second rear seat support member.

[0007] Other aspects of this disclosure may relate to a portable chair comprising: (a) a first front leg; (b) a first rear leg pivotally connected to the first front leg via a first guide; (c) a second front leg; and (d) a second rear leg pivotally connected to the second front leg via a second guide. The portable chair may also include a backrest assembly comprising: (a) a first backrest side rail including a first bottom opening; (b) a second backrest side rail including a second bottom opening; and (c) a backrest fabric extending between the first and second backrest side rails. A first backrest coupling member can be operatively coupled to a first rear support leg, wherein the first backrest coupling member includes a first protrusion configured to be received in a first bottom opening of a first backrest side rail to detachably couple the first backrest side rail to the first rear support leg; and a second backrest coupling member can be operatively coupled to a second rear support leg, wherein the second backrest coupling member includes a second protrusion configured to be received in a second bottom opening of a second backrest side rail to detachably couple the second backrest side rail to the second rear support leg. The first armrest can be pivotally connected to the first back side rail via a first removable armrest pivot, wherein the first armrest is also connected to the first guide such that when the first removable armrest pivot is removed, the first armrest is held on the first guide; and the second armrest can also be pivotally connected to the second back side rail via a second removable armrest pivot, wherein the second armrest is also connected to the second guide such that when the second removable armrest pivot is removed, the second armrest is held on the second guide. Attached Figure Description

[0008] Figure 1 A top right front perspective view of a portable chair in an upright position, constructed according to the aspects disclosed herein, is depicted. Figure 2 The image depicts a structure in a reclining position, constructed according to aspects disclosed herein. Figure 1 Top right front perspective view of the portable chair; Figure 3 Depicting a folded structure according to aspects disclosed herein Figure 1 A perspective view of a portable chair; Figure 4 Depicting the aspects disclosed herein in an upright position Figure 1 Right-side view of an alternative example of a portable chair; Figure 5 Depicting the aspects disclosed herein in an upright position Figure 4 Left side view of the portable chair; Figure 6 The section shown is taken along line 6-6 according to the aspects disclosed herein. Figure 1Enlarged partial cross-sectional perspective view of the seat assembly of a portable chair; Figure 7 Depicting aspects disclosed in this article Figure 4 Top front perspective view of the portable chair, where the fabric has been removed for clarity; Figure 8 Depicting aspects disclosed in this article Figure 7 Top rear perspective view of the portable chair; Figure 9 Depicting aspects disclosed in this article Figure 7 A rear perspective view of the bottom of a portable chair; Figure 10 The section truncated along line 10-10 according to the aspects disclosed herein is depicted. Figure 1 A magnified partial cross-sectional view of a portable chair; Figure 11 The section truncated along line 11-11 according to the aspects disclosed herein is depicted. Figure 1 A magnified partial cross-sectional view of a portable chair; Figure 12 Depicting aspects disclosed in this article Figure 1 Top front perspective view of the portable chair, in which the seat assembly has been removed for clarity; Figure 13 Depicting aspects disclosed in this article Figure 12 A magnified partial perspective view of a portable chair; Figure 14 Depicting aspects disclosed in this article Figure 12 A magnified partial perspective view of a portable chair; Figure 15 Depicting aspects disclosed in this article Figure 1 Side view of the seat frame of the portable chair; Figure 16 Depicting aspects disclosed in this article Figure 15 Partial bottom perspective view of the chair seat frame; Figure 17 Depicting aspects disclosed herein Figure 1 A side cross-sectional view of the portable chair through the armrests when it is in an upright position; Figure 18 Depicting aspects disclosed herein Figure 1 A side cross-sectional view of the portable chair through the armrests when it is in a reclining position; Figure 19 The image depicts a partially unassembled state according to the aspects disclosed herein. Figure 1 Portable chair; Figure 20 The image depicts a partially unassembled state according to the aspects disclosed herein. Figure 1 Portable chairs; and Figure 21 The image depicts a partially unassembled state according to the aspects disclosed herein. Figure 1 Portable chair. Detailed Implementation

[0009] In the following description of various example structures, reference is made to the accompanying drawings, which form part of this document, illustrating various example apparatuses, systems, and environments in which aspects of this disclosure can be practiced. It should be understood that other specific arrangements of components, example apparatuses, systems, and environments can be utilized, and structural and functional modifications can be made without departing from the scope of this disclosure.

[0010] Additionally, while the terms “top,” “bottom,” “front,” “back,” “side,” “rear,” etc., may be used in this specification to describe various exemplary features and elements of the invention, these terms are used herein only for convenience (e.g., based on exemplary orientations shown in the figures or orientations during typical use). Furthermore, as used herein, the term “plural” indicates any number greater than one, up to infinity, as required by disjunction or conjunction.

[0011] As used herein, the terms “connection,” “coupling,” or “attachment” indicate that parts, surfaces, or features may be joined, linked, or attached directly or indirectly (i.e., through an intermediary). Furthermore, as used herein, “pivotally connected” indicates that parts or features may be directly or indirectly coupled together such that the parts can rotate relative to each other while still being directly or indirectly coupled together. Examples of a “pivotally connected” joint may include a pin inserted into an opening arranged in each of the parts to “pivotally connect” them.

[0012] Nothing in this specification should be construed as requiring a specific three-dimensional orientation of the structure to fall within the scope of this invention. Readers are advised that the drawings are not necessarily drawn to scale.

[0013] In general, this disclosure relates to a portable chair having an unfolding or use configuration as well as a folding or transport configuration. The portable chair can be easily folded and carried by a user to any location, and then easily unfolded to provide comfortable seating. The portable chair can also have multiple seating positions from an upright position to multiple reclining positions (i.e., in the reclining position, the angle formed between the backrest assembly and the seat assembly is greater than the angle when the portable chair is in the upright position).

[0014] like Figures 1 to 5As shown, the portable chair 100 may include a chair frame 110, a seat assembly 130, and a back assembly 150. The seat assembly 130 and the back assembly 150 may be releasably connected to the chair frame 110. By having a releasable seat assembly 130 and back assembly 150, if the seat assembly 130 and / or the back assembly 150 are damaged, the seat assembly 130 and / or the back assembly 150 can be replaced with another seat assembly and / or back assembly without replacing the entire chair.

[0015] The chair frame 110 may include: a first front support leg 112; a first rear support leg 114 pivotally connected to the first front support leg 112; a second front support leg 116; and a second rear support leg 118 pivotally connected to the second front support leg 116. The first front support leg 112 may be connected to the second front support leg 116 via a front skid 120. Similarly, the first rear support leg 114 may be connected to the second rear support leg 118 via a rear skid 122. A first guide 126 may pivotally connect the first front support leg 112 and the first rear support leg 114, and a second guide 126 may pivotally connect the second front support leg 116 and the second rear support leg 118. The portable chair 100 may also include a pair of armrests 170, each pivotally connected to the backrest assembly 150, and each also movably connected to one of the guides 126. Each armrest 170 can be pivotally connected to the backrest assembly 150 via a removable armrest pivot 178 (e.g., a pin). Each armrest 170 can be located on opposite sides of the chair frame 110, such that one armrest 170 is movably connected to a first guide 126 and the other armrest 170 is movably connected to a second guide 126. Furthermore, the chair 100 may include a mounting 230 located on one or both of the front legs 112, 116, which can be used to secure external cup holders or other accessories (not shown).

[0016] like Figures 6 to 16As best shown, the chair frame 110 may include a pair of seat support assemblies 180, which are releasably connected to and secure the seat assembly 130 to the chair frame 110. The seat assembly 130 may include a seat frame 132 and a seat fabric 134, which is connected to the seat frame 132. The seat frame 132 may include a pair of seat side rails 136 arranged opposite each other, with the seat fabric 134 extending between the pair of seat side rails 136. Each seat support assembly 180 may be pivotally connected to a first front support leg 112 and a first rear support leg 114, or to a second front support leg 116 and a second rear support leg 118. The seat assembly 130 may be releasably connected to the pair of seat support assemblies 180. When the seat assembly 130 is removed, the seat support assemblies 180 maintain the rigidity and structure of the chair frame 110. Therefore, the seat assembly 130 can be removably connected without negatively impacting the structural integrity of the chair frame 110.

[0017] Figures 7 to 9 A chair 100 is shown, with fabrics 134, 154 removed for clarity of the seat support assemblies 180. Each seat support assembly 180 may include a front seat support 182, a rear seat support 200, and a support post 220. Each support post 220 may extend between and be connected to the front seat support 182 and the rear seat support 200. Each seat support assembly 180 may be pivotally connected to a corresponding front support leg 112, 116 and a corresponding rear support leg 114, 118. For example, a first seat support assembly 180 may be pivotally connected to a first front support leg 112 and a first rear support leg 114, while a second seat support assembly 180 may be pivotally connected to a second front support leg 114 and a second rear support leg 118. The front seat support 182 can be pivotally connected to the respective front outriggers 112, 116 via a respective front pivot 196 (e.g., a pin), and the rear seat support 200 can be pivotally connected to the respective rear outriggers 116, 118 via a respective rear pivot 208 (e.g., a pin).

[0018] When the seat assembly 130 is connected to a pair of seat support assemblies 180, each post 220 of each seat support assembly 180 may be located inside the corresponding seat side rail 136 (i.e., oriented toward the central plane extending from the front end 104 of the portable chair 100 to the rear end 106 of the portable chair 100). Alternatively, the seat support assembly 180 may be arranged such that the post 220 is located outside or below the corresponding seat side rail 136. The seat assembly 130 may be releasably connected to each seat support assembly 180 using a mechanical fastener 195. In some examples, the seat assembly 130 may be releasably secured to each seat support assembly 180 using only a single mechanical fastener 195. In the example shown, a single fastener 195 releasably connects each seat side rail 136 of the seat frame 132 to the corresponding seat support assembly 180. The fastener 195 may also releasably connect the front seat support 182 to the seat side rail 136 of the seat frame 132. The front seat support 182 may include a hole 194 that receives a mechanical fastener 195 and connects to a corresponding receiving portion on the seat side rail 136, such as... Figure 9 As shown. In the example shown, the receiving portion on the seat side rail 136 can be located on the bottom surface of the seat side rail 136; however, the hole 194 and the corresponding receiving portion on the seat side rail 136 can be located on the top surface, side surface, or any suitable location. Therefore, by removing only two fasteners 195 (i.e., a single fastener 195 for each seat side rail 136), the user can easily replace the seat assembly 130 if desired or necessary.

[0019] like Figure 10 and Figures 12 to 13 As shown, each front seat support 182 may include a support surface 184 that supports and contacts a corresponding seat side rail 136. The support surface 184 may have a concave shape and may also have a substantially vertical portion facing the side surface of the corresponding seat side rail 136. Each seat side rail 136 may have a convex portion. For example, the top and bottom surfaces of each seat side rail 136 may be convex, connected by a substantially planar side surface. In other cases, each seat side rail 136 may have a circular, elliptical, or generally rectangular shape. The convex portion of each seat side rail 136 may be releasably received in the concave support surface 184 of the front seat support 182.

[0020] In addition, the front seat support 182 may include a connecting portion 186, which includes a hole 188 receiving a front pivot 196, such as Figure 10As shown. Hole 188 can be positioned below support surface 184. Connection portion 186 may include engagement member 190, which engages the corresponding front support legs 112, 116. Front seat support member 182 may also include receiving portion 192 located inside support surface 184, wherein receiving portion 192 includes a cavity that receives the front end of support column 220.

[0021] like Figures 11 to 12 and Figure 14 As best shown, each rear seat support 200 may include a support surface 202 that supports and contacts a corresponding seat side rail 136. The support surface 202 may have a concave portion and may also have a pair of substantially vertical portions 204, each facing a side surface of the corresponding seat side rail 136. Similar to the front seat support 182, the convex portions of the seat side rail 136 may be releasably received in the concave support surface 202 of the rear seat support 200. Furthermore, the rear seat support 200 may include a hole 206 extending through the vertical portion 204 and receiving a rear pivot 208. The rear pivot 208 connects the rear seat support 200 to a connecting member 210, which is pivotally connected to the rear legs 114, 118. The connecting member 210 can rotate when the portable chair 100 moves from an unfolded or used configuration to a folded configuration. Furthermore, the backrest coupling 152 can be pivotally connected to the rear seat support 200 and the rear pivot 208, such as... Figure 11 and Figure 14 As shown. Furthermore, the roller 212 can be rotatably connected to the pivot 208, which engages the corresponding rear legs 114, 118 when the portable chair 100 moves between the folding and unfolding configurations. The roller 212 can be positioned between the rear seat support 200 and the connecting member 210.

[0022] Furthermore, each seat side rail 136 can be releasably engaged with the pivot 208 via a hook 146 located on each seat side rail 136. Figures 15 to 16As shown, hook 146 may have an open end facing the front end 104 of chair 100; however, hook 146 may also have an open end facing the rear end 106 of chair 100. When seat assembly 130 is mounted onto seat support assembly 180, pivot 208 of each seat support assembly 180 may be received in a hole 148 adjacent to hook 146. Once pivot 208 is received in hole 148, seat assembly 130 may be moved forward until pivot 208 engages hook 146. Once hook 146 engages pivot 208, hole 194 of front seat support will align with receiving portion of seat side rail 136 to allow insertion of mechanical fastener 195, thereby releasably securing seat assembly 130 to chair frame 110. The hook 146 may be integrally formed on the seat side rail 136, or it may be formed on a separate component such as the bracket 145, which may be securely connected to each of the seat side rails 136. Alternatively, the seat support assembly 180 and the seat side rails 136 may be arranged such that the hook 146 engages with a pivot connected to the front seat support 182, and the rear seat support has a receiving portion to allow mechanical fastener engagement of the rear seat support 200.

[0023] As discussed above, the seat assembly 130 may include a seat frame 132 and a seat fabric 134, the seat fabric 134 being attached to the seat frame 132. The seat frame 132 may include a pair of seat side rails 136 arranged opposite each other and connected to each other via a seat back rail 138. The seat fabric 134 may extend unsupported across the seat frame 132 from each end portion (i.e., the seat fabric 134 extends from the first seat side rail 136 to a second seat side rail 136 opposite the first seat side rail 136). A seat rib 140 may extend between the first and second seat side rails 136, wherein the seat rib 140 has a central portion, the upper surface of which is spaced below and spaced apart from the seat fabric 134. The seat back rail 138 may extend between the ends of the pair of seat side rails 136. The seat fabric 134 and back fabric 154 can be configured to prevent deflection beyond a predetermined amount when supporting a user. For example, the seat fabric 134 can be attached to the corresponding seat side rails 136 and then tensioned by fixing the seat ribs 140 and the seat back rail 138 together, thereby setting the desired spacing between the seat side rails 136 while placing the seat fabric 134 at optimal tension to support the user. Similarly, the back fabric 154 can be attached to the corresponding back side rails 156 and then tensioned by fixing the back ribs 158, 160 together, thereby setting the desired spacing between the back side rails 156 while placing the back fabric 154 at optimal tension to support the user.

[0024] like Figure 6As shown, each seat side rail 136 and each back side rail 156 may include a slot or recess 142 extending along most or even the entire length of each side rail 136, 156. The recess 142 may lead to a channel 143. The slot or recess 142 may be located on the outer portion of the upper surface 144 and facing the outer corner of each seat side rail 136 and each back side rail 156. The seat fabric 134 can be secured to each seat side rail 136 by inserting end portions of the seat fabric 134 into the recesses 142 located on each seat side rail 136. Similarly, the back fabric 154 can be secured to each back side rail 156 by inserting end portions of the back fabric 154 into the recesses 142. Each end portion of fabrics 134, 154 may include a ring, wherein the ring is secured within a channel 143 of each side rail 136, 156 by a rod 10 inserted through the ring on each end portion of fabrics 134, 154. Although Figure 6 The illustration shows the seat fabric 134 secured to the seat side rail 136, but the back fabric 154 can be secured to the back side rail 136 in the same manner. The width of the groove 142 can be smaller than the diameter of the rod 10, thereby preventing the rod 10 from exiting the channel 143 through the groove 142 and securing the seat fabric 134 to the seat frame 132. The seat side rail 136 and the back side rail 156 can have rounded corners, wherein the rails 136, 156 have a rounded rectangular cross-sectional shape with flat side surfaces and rounded corners. The rounded corners help to reduce any stress on each fabric 134, 154 as it exits the groove 142. By reducing the stress on the fabrics 134, 154 at the exit of the groove 142, the durability and lifespan of the fabrics 134, 154 can be greatly increased. Each side rail 136, 156 may include an end cap 137, which helps to further secure each fabric 134, 154 to the corresponding side rail 136, 156 of each fabric 134, 154.

[0025] Additionally, the chair 100 may have a symmetrical structure, wherein components on the left side of the chair 100 may be mirrored to components on the right side of the chair 100 (i.e., the front legs 112, 116, the rear legs 114, 118, the seat support assembly 180, the seat side rail 136, the backrest coupling 152, and the backrest side rail 156 may be mirrored by each of the aforementioned components when mirrored through a central plane extending from the front end 104 to the rear end 106).

[0026] The backrest assembly 150 may include a removable backrest frame 153 that supports the backrest fabric 154. The backrest frame 153 may be removably connected to the backrest coupling 152. The backrest frame 153 may include: a pair of backrest side rails 156 arranged opposite each other; a lower back rib 158 extending between the backrest side rails 156; and an upper back rib 160 extending between the backrest side rails 156 and spaced apart from and above the lower back rib 158. The back ribs 158 and 160 may be substantially parallel to each other. Furthermore, the back ribs 158 and 160 provide structural stability to the backrest frame 153. The back ribs 158 and 160 may be spaced apart from and behind the backrest fabric 154. Additionally, the backrest side rails 156 may include one or more perforated rings 159 extending rearward from an outer surface. Each back side rail 156 may include a perforated ring 159 in the upper portion and a perforated ring 159 in the lower portion, such that the perforated rings 159 on each back side rail 156 are spaced apart from each other. The perforated rings 159 may be configured to receive straps or ropes (not shown) or other devices to assist in carrying the chair 100 or attaching the chair 100 to another item. In some examples, the perforated rings 159 may be arranged on only one of the back side rails 156.

[0027] The portable chair 100 can be easily removed from the seat. Figure 1 The use of the constructor shown in the middle is converted to in Figure 3 The folding structure shown is designed for easy transport to another location or for storage. The portable chair 100 can be folded into the shape shown in the image. By actuating a rotatable and pivotable joint, the portable chair 100 can be folded as follows: Figure 3 The folded structure shown is unfolded as follows. Figure 1 and Figure 2 The illustrated configuration is as follows. In the folding configuration, the front legs 112, 116 may be substantially parallel to the rear legs 114, 118, and the seat assembly 130 may be substantially parallel to the backrest assembly 150. When in the folding configuration, the chair 100 can be locked and / or held in the folding configuration by means of hooks 108. Hooks 108 may be pivotally connected to the armrests 170, and in some examples, may be pivotally connected to the backrest assembly 150. Hooks 108 may be able to releasably engage connecting member 210 to prevent the chair 100 from accidentally unfolding. In some examples, hooks 108 may engage other components of the chair frame 110, such as the rear legs 114, 118, the rear seat support 200, or a portion of the chair frame 110.

[0028] The two front support legs 112, 116, the two rear support legs 114, 118, the front skid 120, the rear skid 122, and the rails and ribs 136, 138, 140, 156, 158, 160 of the chair frame 132 and the back frame 153 can be cylindrical tubes, rectangular tubes with rounded corners, and / or shafts, or other hollow shapes. The front support legs 112, 116, and the front skid 120 can be formed as a single, integral part. Similarly, the rear support legs 114, 118, and the rear skid 122 can be formed as a single, integral part. These components can be made of materials such as aluminum, titanium, stainless steel, scandium, metal alloys, polymers, composite materials, carbon fiber, and / or wood such as bamboo. When aluminum, titanium, stainless steel, scandium, and / or metal alloys are used in the manufacture of the two front outriggers 112, 116, the two rear outriggers 114, 118, the front skid 120, the rear skid 122, and the rails 136, 156, 160 of the seat frame 132 and the backrest frame 153, the metal parts can be hydroformed, cast, extruded, or formed by another method known to those skilled in the art. Furthermore, the metal parts can be treated by anodizing, electroplating, spraying, powder coating, and / or glazing to prevent corrosion caused by environmental conditions such as salt spray. Additionally, the metals and alloys used in manufacturing the legs 112, 114, 116, 118, skids 120, 122, and the rails and ribs 136, 138, 140, 156, 158, 160 of the frames 132, 153 may be treated by annealing, surface hardening, precipitation strengthening, tempering, normalizing, and / or quenching to increase hardness, toughness, tensile strength, and shear strength.

[0029] Fabrics 134 and 154 may be woven and / or mesh fabrics. Additionally, fabrics 134 and 154 may be composed of any of a variety of materials, including but not limited to protective fabrics, canvas fabrics, awning fabrics, Kevlar, tarpaulins, vinyl-coated polyester, nylon mesh, neoprene, aluminized nylon, and / or cotton canvas. In some embodiments, the materials may be treated to provide enhanced UV stability and weather resistance, fire resistance, abrasion resistance and tear resistance, and water resistance. Additionally, fabrics 134 and 154 may be composed of a woven material having yarns possessing elastomeric properties. Elastomeric properties include the ability to stretch and deform under stresses such as tension or weight (i.e., increased elasticity). Elastomeric properties allow the fabric to return to its original shape when the stress generated by the load is removed and have the ability to resist creep and / or permanent deformation. In one example, fabrics 134 and 154 may be formed as a first yarn and a second yarn, the first yarn being formed of acrylic or a polymer and a mixture thereof, and the second yarn being formed of an elastomer material, such that the second yarn is more elastomer than the first yarn. The elastomer properties of the second yarn can help provide the elastomer properties of fabrics 134 and 154. In some cases, fabrics 134 and 154 may be made of similar materials, such that fabric 134 of the seat assembly 130 is the same as fabric 154 of the backrest assembly 150. However, in some cases, fabric 134 of the seat assembly 130 may be a different material than fabric 154 of the backrest assembly 150. For example, seat fabric 134 may be made of a first material and / or a combination of materials, and back fabric 154 may be made of a second material and / or a combination of materials different from the first material and / or the combination of materials.

[0030] Furthermore, the portable chair 100 can be arranged in multiple seating positions, ranging from an upright position to multiple reclining positions. For example... Figure 1 and Figure 2 As shown, the portable chair 100 can be mounted from... Figure 1 The upright position displayed in the image has been adjusted to be in Figure 2 The chair 100 is shown in the reclining position. In the upright position, the seat assembly 130 and the backrest assembly 150 can form an angle of approximately 99 degrees, while in the fully reclined position, the seat assembly 130 and the backrest assembly 150 can form an angle of approximately 136 degrees. The chair 100 can have multiple reclining positions between the upright and fully reclined positions. Therefore, the chair 100 can have an angle difference of approximately 37 degrees between the upright and fully reclined positions, and an angle difference in the range of 30 to 40 degrees between the upright and fully reclined positions.

[0031] The adjustment of the portable chair 100 can be controlled by the relative position of each guide 126 with respect to its corresponding armrest 170. As discussed above, each guide 126 is movably connected to its corresponding armrest 170 and is pivotally connected to one of the first front support leg 112 and the first rear support leg 114, or pivotally connected to one of the second front support leg 116 and the second rear support leg 118. Figure 17 and Figure 18 As shown in the cross-sectional view, each armrest 170 may include a set of internal receptacles 172, each of which receives a guide member 126. The position (i.e., angle) of the backrest assembly 150 relative to the seat assembly 130 depends on which receptacle 172 the guide member 126 is located in. In some examples, each armrest 170 may have two sets of internal receptacles 172, arranged on opposite sides of each armrest 170. Thus, the guide member 126 can simultaneously engage the receptacles 172 in both sets of receptacles 172 on both sides of each armrest. Figure 17 A portable chair 100 in an upright position is shown, with guide 126 located in the rearmost receiving portion 172A. With guide 126 in the rearmost receiving portion 172A, armrest 170 moves forward relative to the upper portions of legs 112, 114, 116, 118, and backrest assembly 150 rotates forward. As guide 126 is moved relative to each subsequent forward receiving portion 172 relative to the rearmost receiving portion 172A, armrest 170 moves backward relative to the upper portions of legs 112, 114, 116, 118, and backrest assembly 150 rotates backward to a reclining position. Figure 18 The position of the guide 126 in the foremost receiving portion 172B is shown, corresponding to the chair 100 in a fully reclined position. Each receiving portion 172 may have an opening at its bottom end and tapered sidewalls, each angled toward the rear end 106 of the chair 100. The tapered sidewalls of each receiving portion 172 facilitate guiding the guide 126 into the selected receiving portion 172. The armrests 170 may also have elongated hanging members 174 located on the outer surface 176 of each armrest 170. The hanging members 174 may have an elongated shape and include a substantially U-shaped recess. In some examples, the hanging members 174 may have a retaining member extending into the upper portion of the recess to help retain items located within the recess. The hanging members 174 may be configured to receive straps or strips to support external bags or other items (not shown). The hanging element 174 may be integral with the handrail 170, such that the hanging element 174 is formed together with the handrail 170, or the hanging element 174 may be releasably connected (e.g., connected to the handrail 170 as a separate component).

[0032] Chair 100 can be easily adjusted to a desired reclining position. To adjust chair 100 from an upright position to a reclining position, the user can lean forward to relieve any pressure on the backrest assembly 150, then lift the armrest 170 and move it backward (i.e., away from the front end 104 of chair 100), causing the guide 126 to engage a receiving portion 172 further forward than the previous receiving portion 172. A similar process can be used to move chair 100 from a reclining position to a more upright position. To move chair 100 from a reclining position to a more upright position, the user can lean forward to relieve any pressure on the backrest assembly 150, then lift the armrest 170 and move either the armrest 170 or the backrest assembly 150 forward (i.e., toward the front end 104 of chair 100), causing the guide 126 to engage a receiving portion 172 further back than the previous receiving portion 172. In some examples, to move the chair 100 from a reclining position to a more upright position, the user can simply reduce the pressure on the backrest assembly 150 and pull the backrest assembly 150 forward, causing the guide 126 and the receiving portion 172 to operate in a ratchet arrangement, thereby receiving the guide 126 in a receiving portion 172 further rearward than the previous receiving portion 172. For example... Figure 17 As shown, when the guide 126 is located in the rearmost receiving portion 172A, the chair 100 can be in its most upright position. When the chair 100 is in the folded configuration, the guide 126 can be disengaged from the receiving portion 172.

[0033] Figures 19 to 20The backrest assembly 150 is shown being removed from chair 100. As discussed above, the backrest assembly 150 can be replaced by the user. For example, if the backrest assembly 150 is damaged, or if the user wants a different backrest fabric 154, the backrest assembly 150 can be replaced. As discussed above, the backrest assembly 150 can be releasably attached to chair 100. The backrest frame 153 can be releasably attached to backrest coupling 152. Each backrest side rail 156 may have a bottom opening 157 to allow insertion of an upper protrusion 155 of each backrest coupling 152. Additionally, each backrest side rail 156 may include a protrusion received in the upper opening of each backrest coupling 152 to releasably attach the backrest frame 153 to the backrest coupling 152. Armrest pivots 178 can be inserted into holes in each armrest 170 and then through holes in the backrest side rails 156 to secure both the armrest 170 and the backrest coupling 152 to the backrest side rails 156. In some examples, the armrest pivots 178 can be secured via threaded connections. These threaded connections can be located in the armrest 170, the backrest coupling 152, the backrest side rails 156, or in separate mechanical elements engaging the armrest pivots 178. To replace the backrest assembly 150, the armrest pivots 178 can be removed, disengaging each armrest 170 from its corresponding backrest side rail 156. Each armrest 170 remains connected to the chair frame 110 via guides 126, each guide 126 coupled to its corresponding armrest 170. Additionally, once the armrest pivots 178 are removed, each backrest side rail 156 becomes slidably engaged with its corresponding backrest coupling 152. Then, the backrest assembly 150 can slide off the backrest coupling 152 to allow, Figure 20 The backrest assembly 150 is shown for replacement. Therefore, the backrest assembly 150 can be removed by removing the two armrest pivots 178 and sliding the backrest assembly 150 upward from the backrest coupling 152. Figure 21 The removal of the seat assembly 130 from the chair 100 is shown. As discussed above, the seat assembly 130 can be removed from the seat support assembly 180 by removing the mechanical fasteners 195 and then removing the chair frame 132 from the seat support assembly 180. With the seat assembly 130 removed, the seat support assembly 180 helps maintain the structural integrity of the chair frame 110. Although Figure 21 It is also shown that the backrest assembly 150 has been removed, but the seat assembly 130 can be removed without removing the backrest assembly 150.

[0034] While various embodiments have been described, it will be understood by those skilled in the art that many more embodiments and implementations may exist within the scope of the claims. The various dimensions described above are merely exemplary and can be changed as needed. Therefore, it will be understood by those skilled in the art that many more embodiments and implementations may exist within the scope of the claims. Thus, the described embodiments are provided only to aid in understanding the claims and do not limit the scope of the claims.

Claims

1. A portable chair, comprising: First foreleg; The first rear outrigger is pivotally connected to the first front outrigger; Second foreleg; The second rear outrigger is pivotally connected to the second front outrigger; A first seat support assembly is connected to the first front support leg and the first rear support leg, wherein the first seat support assembly includes: The first front seat support is pivotally connected to the first front support leg; The first rear seat support is pivotally connected to the first rear support leg; and The first pillar extends between the first front seat support and the first rear seat support; A seat assembly is releasably connected to the first seat support assembly, wherein the seat assembly includes: A pair of seat side rails; The rear seat rail extends between the pair of seat side rails; and Seat fabric extends between the pair of seat side rails; and Wherein, the first seat side rail of the pair of seat side rails is supported by the first front seat support and the first rear seat support; and The portable chair has both a usability structure and a folding structure.

2. The portable chair according to claim 1, wherein, The first support is located inside the first seat side rail.

3. The portable chair according to claim 1, wherein, The first support is substantially parallel to the first seat side rail.

4. The portable chair according to claim 1, wherein, The first front seat support includes a support surface having a concave shape and supporting the first seat side rail.

5. The portable chair according to claim 4, wherein, The first front seat support includes a hole located below the support surface and receiving a front pivot, wherein the front pivot pivotally connects the first front seat support and the first front support leg.

6. The portable chair according to claim 1, wherein, The first rear seat support includes a support surface having a concave shape and supporting the first seat side rail.

7. The portable chair according to claim 6, wherein, The first rear seat support includes a hole extending through the support surface and receiving a rear pivot, wherein the rear pivot pivotally connects the first rear seat support and the first rear support leg.

8. The portable chair according to claim 1, further comprising: A back assembly, pivotally connected to the first rear outrigger and the second rear outrigger, the back assembly comprising: A pair of back side rails; First back side rail; Second back side rail; and Back fabric extends between the first back side rail and the second back side rail; The first armrest is pivotally connected to the first back side rail of the pair of back side rails; and The second armrest is pivotally connected to the second back side rail of the pair of back side rails.

9. The portable chair according to claim 8, wherein, The first guide is pivotally connected to the first front support leg and the first rear support leg, and the second guide is pivotally connected to the second front support leg and the second rear support leg; as well as The first handrail is configured to releasably engage the first guide member, and the second handrail is configured to releasably engage the second guide member.

10. The portable chair according to claim 9, wherein, When the portable chair is in the usage configuration, the portable chair has an upright position and a reclining position, and The first armrest includes a set of internal receiving portions that receive the first guide member, such that when the first guide member is received in the rearmost receiving portion of the set of internal receiving portions, the portable chair is in the upright position, and when the first guide member is received in the receiving portion of the set of internal receiving portions located in front of the rearmost receiving portion, the portable chair is in the reclining position.

11. The portable chair according to claim 8, wherein, The backrest assembly is releasably connected to a pair of backrest couplings, wherein the upper portion of the first backrest coupling of the pair of backrest couplings is inserted into the bottom opening of the first backrest side rail.

12. The portable chair according to claim 11, wherein, The first backrest side rail is fixed to the first backrest coupling via an armrest pivot, which is also pivotally connected to the first armrest.

13. A portable chair, comprising: Chair frame, including: First foreleg; Second foreleg; The first rear support leg is connected to the first front support leg; The second rear outrigger is connected to the second front outrigger; The first chair seat support assembly includes: The first front seat support includes a first concave surface; and The first rear seat support includes a first pin; The second chair seat support assembly includes: The second front seat support includes a second concave surface; and The second rear seat support includes a second pin; and Seat assembly, including: A first seat side rail includes a first hole and a first convex portion, wherein the first hole is configured to releasably receive the first pin, and wherein the first concave surface is configured to releasably receive and support the first convex portion. The second seat side rail includes a second hole and a second convex portion, wherein the second hole is configured to releasably receive the second pin, and wherein the second concave surface is configured to releasably receive and support the second convex portion; and The seat fabric extends between the first seat side rail and the second seat side rail.

14. The portable chair according to claim 13, wherein, The chair frame also includes: A backrest assembly, operably connected to the first rear outrigger and the second rear outrigger, the backrest assembly comprising: First back side rail; Second back side rail; Back fabric extends between the first back side rail and the second back side rail; and The first armrest is connected to the first backrest side rail; and The second armrest is connected to the second back side rail.

15. The portable chair according to claim 14, wherein, The first guide is pivotally connected to the first front support leg and the first rear support leg, and the second guide is pivotally connected to the second front support leg and the second rear support leg; as well as The first handrail is movably connected to the first guide member, and the second handrail is movably connected to the second guide member.

16. The portable chair according to claim 14, wherein, A hook is pivotally connected to the first armrest, wherein the hook is releasably engaged with a portion of the chair frame to prevent the portable chair from unfolding when it is in a folded configuration.

17. The portable chair according to claim 14, wherein, The first backrest side rail is releasably connected to the first backrest coupling member, and the second backrest side rail is releasably connected to the second backrest coupling member; as well as The first backrest coupling member is operably connected to the first rear support leg, and the second backrest coupling member is operably connected to the second rear support leg.

18. The portable chair according to claim 17, wherein, The upper portion of the first backrest coupling is inserted into an opening at the bottom of the first backrest side rail.

19. The portable chair according to claim 13, wherein, The chair frame also includes: A first pillar and a second pillar, the first pillar extending between the first front seat support and the first rear seat support, and the second pillar extending between the second front seat support and the second rear seat support.

20. A portable chair, comprising: First foreleg; The first rear outrigger is pivotally connected to the first front outrigger via a first guide; Second foreleg; The second rear outrigger is pivotally connected to the second front outrigger via a second guide; Back components, including: First back side rail, including first bottom opening; The second back side rail includes a second bottom opening; and Back fabric extends between the first back side rail and the second back side rail; A first backrest coupling member is operatively coupled to the first rear support leg, wherein the first backrest coupling member includes a first protrusion configured to be received in a first bottom opening of the first backrest side rail to detachably couple the first backrest side rail to the first rear support leg. The second backrest coupling is operatively coupled to the second rear support leg, wherein the second backrest coupling includes a second protrusion configured to be received in the second bottom opening of the second backrest side rail to detachably couple the second backrest side rail to the second rear support leg. A first armrest, wherein the first armrest is pivotally connected to the first back side rail via a first removable armrest pivot, and wherein the first armrest is also connected to the first guide such that when the first removable armrest pivot is removed, the first armrest is held on the first guide; and The second armrest is pivotally connected to the second back side rail via a second removable armrest pivot, and is also connected to the second guide such that the second armrest is held on the second guide when the second removable armrest pivot is removed.

Images