Folding chair

Abstract

A folding chair is configured to operate in a deployed state and a stowed state. The folding chair includes a support assembly having one or more first members and an engaging structure. The one or more first members are configured to rest on a ground and support the folding chair when the folding chair is in the deployed state. The folding chair includes a seat portion independently coupled to the support assembly when the folding chair is in the deployed state and in the stowed state. The folding chair includes a detachable backrest panel independently coupled to the support assembly. The backrest panel is configured to engage with the support assembly via the engaging structure.

Description

RELATED APPLICATIONS

[0001] This application claims priority to Chinese Patent Application No. 202520157662.3, filed on Jan. 23, 2025, which is incorporated by reference herein in its entirety.TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of furniture, and in particular, to a folding chair assembly.BACKGROUND OF THE INVENTION

[0003] Existing folding chairs suffer from defects in design, especially in a connection part between a backrest panel and a support. The connection is usually not secure enough, causing the backrest panel to easily loosen during use and therefore affecting comfort and safety of a user. In addition, due to unreasonable design of a connection structure, the assembly process of the folding chair becomes quite cumbersome. A significant amount of time and energy is required to ensure a stable connection between the backrest panel and the support. This not only increases production costs but also reduces user experience. Given the current state of the art, there remains a need for folding chairs with improved connection structure and the assembly manner that address the aforementioned issues.SUMMARY

[0004] Various embodiments of this application are directed to a folding chair that improves product stability and durability, enhances user experience, and facilitates product maintenance. In an aspect of this application, a folding chair is configured to operate in a deployed state and a stowed state, and includes a support assembly, a seat portion, and a backport assembly. The support assembly includes one or more first members and an engaging structure. The one or more first members are configured to rest on a ground and support the folding chair when the folding chair is in the deployed state. The seat portion of the folding chair is independently coupled to the support assembly when the folding chair is in the deployed state and in the stowed state. The backrest panel may be independently coupled to the support assembly, and is configured to engage with the support assembly via the engaging structure. The backrest panel is detachable from the support assembly.

[0005] In some embodiments, the backrest panel includes one or more components. Each of the one or more components is configured to (i) couple to a respective first member of the one or more first members of the support assembly and (ii) extend relative to the support assembly along the height direction of the backrest panel, thereby causing the backrest panel to adjust relative to the support assembly.

[0006] In some embodiments, each first member, of the one or more first members of the support assembly, has a first cross-sectional dimension. Each of the one or more components of the backrest panel has a second cross-sectional dimension that complements the first cross-sectional dimension.

[0007] In some embodiments, the support assembly includes one or more second members, each of the one or more second members is rotatably coupled to a respective first member of the one or more first members of the support assembly and cause the folding chair to operate in the deployed state and the stowed state.

[0008] In some embodiments, a respective second member, of the one or more second members, is rotatably coupled to a respective first member of the one or more first members via a rotating ring. In some embodiments, the support assembly includes one or more third members, distinct from the one or more first members and the one or more second members. The one or more third members are configured to support a load on the seat portion of the folding chair. The seat portion is coupled to the support assembly via the one or more third members.

[0009] In some embodiments, along the height direction of the backrest panel, a respective third member, of the one or more third members, has a C-shaped bending structure. A position of the seat portion corresponding to the respective third member is provided with a groove. An end of the respective third member is configured to be embedded into the groove, to improve structural strength of the seat portion.

[0010] In some embodiments, each of the one or more second members comprises a rod.

[0011] In some embodiments, each of the one or more first members comprises a rod.

[0012] In some embodiments, the rod includes an opening at an end facing the backrest panel and a sliding groove facing an inner side surface of the backrest panel. The sliding groove is coupled to the opening and is configured to slide along the height direction of the backrest panel to adjust a position of the backrest panel relative to the support assembly.

[0013] In some embodiments, a respective first member, of the one or more first members, includes one or more mounting holes. Each of the one or more mounting holes is configured to receive a connecting member for coupling the backrest panel to the support assembly.

[0014] In some embodiments, the backrest panel further includes an abutment segment that is positioned at an end of the one or more components of the backrest panel, away from the support assembly. Along the height direction of the backrest panel, a cross-sectional dimension of the abutment segment is greater than a cross-sectional dimension of a respective first member of the support assembly, thereby limiting a movement distance of the backrest panel relative to the support assembly.

[0015] In some embodiments, each component of the one or more components of the backrest panel comprises a limiting block. The limiting block includes a protrusion and a sliding segment. A first side of the sliding segment is the backrest panel. A second side of the sliding segment is the protrusion. The protrusion is arranged on a side of the sliding segment close to the abutment segment, and the sliding segment and the protrusion are integrally formed. Along the height direction of the backrest panel, a length of the protrusion is less than a length of the sliding segment, and the protrusion is configured to be engaged with the one or more first members.

[0016] In some embodiments, the abutment segment comprises a ring-shaped wrapping structure disposed proximate a top end of the backrest panel and extending to an end of the limiting block.

[0017] In some embodiments, a cross-sectional shape of the protrusion is a C-shaped structure along the height direction of the backrest panel.

[0018] In some embodiments, a cross-sectional shape of the protrusion is U-shaped along the height direction of the backrest panel.

[0019] In some embodiments, a respective first member, of the one or more first members, comprises a hollow tubular structure.

[0020] In some embodiments, an inner wall surface of the respective first member facing the backrest panel is provided with a notch. The notch and the tubular structure form a sliding groove of the respective first member.

[0021] In some embodiments, a position of the backrest panel is adjustable along a height direction of the backrest panel via movement of the backrest panel relative to the supporting assembly while the backrest panel is engaged with the engaging structure of the support assembly.

[0022] In another aspect of this application, an apparatus (e.g., a folding chair configured to transition between a deployed state and a stowed state) includes means for supporting the chair relative to a surface; means for seating a user coupled to the means for supporting; means for supporting the user's back comprising a backrest panel; means for engaging the backrest panel with the means for supporting; means for permitting detachment of the backrest panel from the means for supporting in both the deployed state and the stowed state; means for enabling folding of the chair between the deployed state and the stowed state; and means for reinforcing a connection between the means for seating and the means for supporting. In some embodiments, the apparatus includes means for guiding movement of the backrest panel along an adjustment path. In some embodiments, the apparatus includes means for limiting a travel extent of the backrest panel along the adjustment path. In some embodiments, the apparatus includes means for selectively retaining the backrest panel at one or more user-selected positions along the adjustment path.

[0023] In another aspect, a folding chair is configured to transition between a deployed state and a stowed state. The folding chair comprises means for supporting the chair relative to a surface. The folding chair comprises means for seating a user coupled to the means for supporting. The folding chair comprises means for supporting the user's back comprising a backrest panel. The folding chair comprises means for engaging the backrest panel with the means for supporting and for guiding movement of the backrest panel along an adjustment path. The folding chair comprises means for limiting a travel extent of the backrest panel along the adjustment path. The folding chair comprises means for selectively retaining the backrest panel at one or more user-selected positions along the adjustment path. The folding chair comprises means for permitting detachment of the backrest panel from the means for supporting in both the deployed state and the stowed state. The folding chair comprises means for enabling folding of the chair between the deployed state and the stowed state. The folding chair also comprises means for reinforcing a connection between the means for seating and the means for supporting.

[0024] In yet another aspect, a method for folding chair assembly, operable in a deployed state and a stowed state, comprises providing a support assembly including one or more first members configured to rest on a ground and support a folding chair when the folding chair is in the deployed state. The method comprises providing a seat portion coupled to the support assembly when the folding chair is in the deployed state and in the stowed state. The method also comprises providing the backrest panel coupled to the support assembly, independent of the seat portion. In some embodiments, the backrest panel is adjustable relative to the support assembly and detachable from the support assembly when the folding chair is in the deployed state and in a stowed state.

[0025] In accordance with some embodiments, a folding chair comprises a backrest panel, including a backrest having a first side and a second side, where each of the first side and the second side of the backrest is provided with a limiting block that is configured to extend along a height direction of the backrest panel. The folding chair comprises a support assembly, including a first main support rod and a second main support rod, where the first main support rod is disposed on a first side of the backrest panel and the second main support rod is disposed on a second side the backrest panel. Each of the first main support rod and the second main support rod includes an opening at an end facing the backrest panel and a sliding groove facing an inner side of the backrest panel. The sliding groove is coupled to the opening and extends along the height direction of the backrest panel to allow the limiting block to extend through the opening and slide along the sliding groove, so as to connect the backrest panel and the support assembly.

[0026] In some embodiments, a cross-sectional dimension of the limiting block is adapted to match (e.g., complementary to) a cross-sectional dimension of the sliding groove along a height direction of the backrest panel.

[0027] In some embodiments, the backrest panel includes with an abutment segment that is positioned at an end of the limiting block, away from the support assembly. Along the height direction of the backrest panel, a cross-sectional dimension of the abutment segment is greater than a cross-sectional dimension of the main support rod, thereby limiting a movement distance of the backrest panel relative to the support assembly.

[0028] In some embodiments, the limiting block includes a protrusion and a sliding segment. One side of the sliding segment is the backrest panel, the other side of the sliding segment is the protrusion. The protrusion is disposed on a side of the sliding segment near the abutment segment, and the sliding segment and the protrusion are integrally formed. Along the height direction of the backrest panel, a length of the protrusion is less than a length of the sliding segment, and the protrusion is configured to be engaged with the main support rod.

[0029] In some embodiments, a cross-sectional shape of the protrusion is C-shaped along the height direction of the backrest panel.

[0030] In some embodiments, the folding chair further includes a seat having a first side and a second side. Each of the first and second sides of the seat is provided with the support assembly.

[0031] In some embodiments, the support assembly further includes a secondary support rod. The secondary support rod is located near to and above the seat to be rotatably connected to the main support rod. A rotating ring is provided at a connection (e.g., a joint) between the main support rod and the secondary support rod, and two ends of the rotating ring are respectively hinged to the main support rod and the secondary support rod.

[0032] In some embodiments, two sides of the seat are each provided with a reinforcing member, and the support assembly is connected to the seat through the reinforcing member, to increase a load-bearing strength of the seat.

[0033] In some embodiments, along the height direction of the backrest panel, the reinforcing member has a C-shaped bending structure, a position of the seat corresponding to the reinforcing member is provided with a groove, and an end of the reinforcing member is configured to be embedded into the groove, to improve structural strength of the seat.

[0034] In some embodiments, an outer wall surface of the main support rod is provided with a mounting hole for a connecting member to extend through and abut against the limiting block.

[0035] In some embodiments, the main support rod is of a hollow tubular structure, an inner wall surface of the main support rod facing the backrest panel is provided with a notch, and the notch and the tubular structure form the sliding groove.

[0036] Note that the various embodiments described above can be combined with any other embodiments described herein. The features and advantages described in the specification are not all inclusive and, in particular, many additional features and advantages will be apparent to one of ordinary skill in the art in view of the drawings, specification, and claims. Moreover, it should be noted that the language used in the specification has been principally selected for readability and instructional purposes and may not have been selected to delineate or circumscribe the inventive subject matter.

[0037] Based on the foregoing technical solutions, the folding chair in this application has the following beneficial effects.

[0038] By design the limiting block of the backrest panel to extend along the height direction and slide along the sliding groove after extending through the opening of the main support rod of the support assembly, a tight connection between the backrest panel and the support assembly can be achieved. Compared with conventional fixing methods, this connection method effectively reduces loosening during use and improve the overall stability of the folding chair. Furthermore, the sliding groove design allows the limiting block to easily insert into and slide along the sliding groove until a predetermined position is reached, thus simplifying the assembly process and reducing assembly difficulty, time, and labor costs. Moreover, because the limiting block can slide along the sliding groove, users can adjust the backrest panel position according to their needs, thus obtaining a more comfortable sitting posture. The design also facilitates maintenance and replacement because the backrest panel can be easily disassembled and reassembled. In summary, the disclosed folding chair not only improves product stability and durability, but also enhances user experience and ease of maintenance.

[0039] These illustrative embodiments are mentioned not to limit or define the disclosure, but to provide examples to aid understanding thereof. Additional embodiments are discussed in the Detailed Description, and further description is provided there.BRIEF DESCRIPTION OF THE DRAWINGS

[0040] To describe the technical solutions of this application more clearly, the following briefly describes the accompanying drawings required for describing the embodiments or the related art. Apparently, the accompanying drawings described below are merely some embodiments of this application, and a person of ordinary skill in the art may further obtain other accompanying drawings according to these accompanying drawings without creative efforts.

[0041] FIG. 1 is a three-dimensional perspective view of an example folding chair, in accordance with some embodiments.

[0042] FIG. 2 is an exploded perspective view of an example folding chair shown in FIG. 1, in accordance with some embodiments.

[0043] FIG. 3 is an enlarged view of an example part (e.g., part X) of a folding chair shown in FIG. 2, in accordance with some embodiments.

[0044] FIG. 4 is a front view of an example folding chair, in accordance with some embodiments.

[0045] FIG. 5 is a rear view of an example folding chair, in accordance with some embodiments.

[0046] FIG. 6 is a top view of an example folding chair, in accordance with some embodiments.

[0047] FIG. 7 is a left view of an example folding, chair in accordance with some embodiments.

[0048] FIG. 8 is a cross-sectional view of section A-A of an example folding chair shown in FIG. 7, in accordance with some embodiments.

[0049] FIG. 9 is an enlarged view of an example part (e.g., part Y) of an example folding chair shown in FIG. 8, in accordance with some embodiments.

[0050] FIG. 10 is a cross-sectional view of section B-B of an example folding chair shown in FIG. 7, in accordance with some embodiments.

[0051] FIG. 11 is an enlarged view of an example part (e.g., part Z) of an example folding chair shown in FIG. 10, in accordance with some embodiments.

[0052] FIG. 12 is a flow diagram of an example method for a folding chair assembly, in accordance with some embodiments.

[0053] Like reference numerals refer to corresponding parts throughout the several views of the drawings.DESCRIPTION OF EMBODIMENTS

[0054] Reference will now be made in detail to specific embodiments, examples of which are illustrated in the accompanying drawings. In the following detailed description, numerous non-limiting specific details are set forth in order to assist in understanding the subject matter presented herein. But it will be apparent to one of ordinary skill in the art that various alternatives may be used without departing from the scope of claims and the subject matter may be practiced without these specific details. For example, it will be apparent to one of ordinary skill in the art that the subject matter presented herein can be implemented on many types of electronic devices with storage capabilities.

[0055] The term “one embodiment” or “an embodiment” as used herein refers to a particular feature, structure, or characteristic that may be included in at least one implementation of this application. In the description of this application, it should be understood that orientation or position relationships indicated by the terms such as “up”, “down”, “left”, “right”, “top”, and “bottom” are based on orientation or position relationships shown in the drawings, and are used only for ease and brevity of illustration and description, rather than indicating or implying that the mentioned apparatus or component needs to have a particular orientation or needs be constructed and operated in a particular orientation. Therefore, such terms should not be construed as limiting of this application. In addition, terms “first” and “second” are merely used for description, and cannot be understood as indicating or implying relative importance or implying a quantity of indicated technical features. Therefore, features defined by “first” and “second” may explicitly or implicitly include one or more such features. In addition, the terms “first”, “second”, and the like are used to distinguish between similar objects rather than describe a specific order or sequence. Data used in this way is exchangeable in a proper case, so that the embodiments of this application described herein can be implemented in another order other than those shown or described herein.

[0056] Various embodiments of the present disclosure are directed to a folding chair 100. FIG. 1 to FIG. 11 illustrate the folding chair 100 in accordance with some embodiments. In accordance with some embodiments, the folding chair 100 is configured to operate in a deployed state and a stowed (e.g., folded) state (not shown). For example, FIG. 11 shows the folding chair 100 in the deployed state.

[0057] FIG. 1 is a three-dimensional perspective view of an example folding chair 100, in accordance with some embodiments. In some embodiments, the folding chair 100 comprises a support assembly 12. In some embodiments, the support assembly 12 includes one or more first members 121. The one or more first members are configured to rest on the ground and support the folding chair 100 when the folding chair 100 is in the deployed state, as illustrated in FIG. 1.

[0058] In some embodiments, a respective first member 121 comprises a rod (e.g., a support rod). In some embodiments, a respective first member 121 is also referred to as a main rod or a main support rod. In some embodiments, each of the first members 121 of the support assembly 12 includes a rod. The example of FIG. 1 shows support assembly 12 having two rods, each arranged a respective side of a backrest panel 11.

[0059] In some embodiments, the support assembly 12 includes one or more second members 122. Each of the one or more second members 122 is rotatably coupled to a respective first member 122 of the support assembly 12, and causes the folding chair 100 to operate in the deployed state and the stowed state. In some embodiments, a respective second member 122 includes a rod (e.g., a support rod). In some embodiments, each of the second members 122 includes a rod. In some embodiments, a respective second member 122 is also referred to as a secondary rod or a secondary support rod.

[0060] In some embodiments, the support assembly 12 includes one or more third members 131. The one or more third members 131 are configured to support a load on the seat portion of the folding chair. In some embodiments, a respective third member 131 is also known as a reinforcing member.

[0061] In some embodiments, and as illustrated in FIG. 1, the support assembly 12 includes one or more engaging structure 14 that is configured to engage with a backrest panel 11. In some embodiments, the engaging structure 14 is part of (e.g., integral with) the first member 121 of the support assembly. In some embodiments, the engaging structure 14 and the first member 121 are separate and distinct components that are joined or welded to each other.

[0062] The folding chair 100 includes a backrest panel 11. The backrest panel 11 includes a front side and a back side. The backrest panel 11 includes one or more components 125. In some embodiments, a respective component 125 is configured to couple to a respective first member 121 of the support assembly 12 (e.g., that is on the same side as the respective component 125). The respective component 125 is configured to extend relative to the support assembly 12 along a height direction of the backrest panel 11 (e.g., direction H in FIG. 2), thereby causing the backrest panel 11 to adjust relative to the support assembly 12.

[0063] In some embodiments, a respective component 125 of the backrest panel 11 includes a limiting block 112. In some embodiments, the front side and the back side of the backrest panel 11 are each provided with a limiting block 112, as illustrated in FIG. 2. In some embodiments, the limiting block 112 extends along a height direction H of the backrest panel 11.

[0064] In some embodiments, the backrest panel 11 includes a detachable backrest panel that is detachable from the support assembly 12. For example, FIG. 1 illustrates a view showing the detachable backrest panel 11 being attached to the support assembly 12, and FIG. 2 illustrates a view showing the detachable backrest panel 11 being attached to the support assembly 12.

[0065] The backrest panel 11 is configured to engage with the support assembly 12 via the engaging structure 14. In some embodiments, a position of the backrest panel 11 is adjustable along a height direction of the backrest panel 11 via movement of the backrest panel 11 relative to the supporting assembly while the backrest panel 11 is engaged (e.g., loosely engaged or movably engaged) with the engaging structure 14 of the support assembly 12.

[0066] In some embodiments, each first member 121 of the support assembly 12 has a first cross-sectional dimension. Each of the one or more components of the backrest panel 11 has a second cross-sectional dimension that complements (e.g., matches) the first cross-sectional dimension. In other words, in some embodiments, a respective first member 121 and a respective component 125 are designed to fit together.

[0067] FIG. 2 is an exploded perspective view of an example folding chair shown in FIG. 1, in accordance with some embodiments, and FIG. 3 is an enlarged view of an example part (e.g., part X) of a folding chair shown in FIG. 2, in accordance with some embodiments. FIGS. 4, 5, 6, and 7 are a front view, a rear view, a top view, and a left view of an example folding chair 100, respectively, in accordance with some embodiments. In some embodiments, an end of the first member 121 facing the backrest panel 11 is provided with an opening 1211. An inner side surface facing the backrest panel 11 is provided with a sliding groove 1212. The sliding groove 1212 is coupled with the opening 1211 and extends along the height direction H (see FIG. 2 and FIG. 3) of the backrest panel 11, to allow the limiting block 112 to extend through the opening 1211 and slide along a providing direction of the sliding groove 1212, thereby realizing the connection between the backrest panel 11 and the first member 121.

[0068] It may be understood that two first members 121 are arranged. The two first members 121 are arranged on left and right sides of the backrest panel 11. Each first members 121 is provided with the opening 1211 and the sliding groove 1212. The backrest panel 11 passes through the opening 1211 of the first member 121 through limiting blocks 112 on left and right sides thereof, and may slide in the sliding groove 1212. This design enables movement between the backrest panel 11 relative to the first member 121. However, when fixation is required, the backrest panel 11 and the first member 121 can be fixed (e.g., secured, fastened) through one or more positions of the limiting blocks 112 in the sliding groove 1212, thereby implementing a stable connection.

[0069] Therefore, based on the foregoing structure form, by designing the limiting block 112 of the backrest panel 11 to extend along the height direction H and to be able to pass through the opening 1211 of the first member 121 of the support assembly 12 and slide along the sliding groove 1212, a tight connection between the backrest panel 11 and the support assembly 12 can be achieved. Compared with conventional fixing methods, the disclosed connection method can effectively reduce looseness during use and improve the overall stability of the folding chair 100. Furthermore, the design of the sliding groove 1212 enables the limiting block 112 to be easily inserted into the sliding groove 1212 and slide along it until a predetermined position is reached, thereby simplifying the assembly steps of the folding chair 100. This design reduces assembly difficulty and the time and labor costs required for assembly. Moreover, since the limiting block 112 can slide along the sliding groove 1212, the user can adjust the position of the backrest panel 11 according to their own needs to obtain a more comfortable sitting posture. At the same time, this design also facilitates future maintenance and replacement, as the backrest panel 11 can be easily disassembled and reassembled. In summary, this folding chair 100 design, through its innovative connection method, not only improves the product's stability and durability but also enhances the user experience and ease of product maintenance.

[0070] In some embodiments, a respective first member 121 includes a hollow tubular structure. The first member 121 has a notch on the inner wall facing the backrest panel 11. The notch and the tubular structure form the sliding groove 1212.

[0071] Because the hollow tubular structure is lighter in weight compared to a solid structure, the hollow tubular design makes it easier for one to carry and move the entire folding chair 100. Moreover, tubular structures typically have high compressive and bending strength and can maintain sufficient support, even with a lighter weight. The hollow design further increases cross-sectional moment of inertia of support rods, thereby improving their bending resistance and making the folding chair 100 more stable during use. In addition, the notch design enables a sliding groove 1212 to be formed on the inner side of the tubular structure, providing a path for sliding of the limiting block 112 and enabling connection between the backrest panel 11 and the support assembly 12.

[0072] In some embodiments, cross-sectional dimensions of the limiting block 112 are adapted to complement (e.g., match) cross-sectional dimensions of the sliding groove 1212 along the height direction H of the backrest panel 11. For example, as illustrated in FIG. 2 and FIG. 3, in some embodiments, the sliding groove 1212 includes a U-shaped channel and the limiting block 112 includes a mating component, and the sliding groove 1212 is designed to fit over the limiting block 112.

[0073] In accordance with some embodiments, the limiting block 112 is an elongated feature on each side of the backrest panel that interfaces with a complementary sliding groove in the main support rods. Each main support rod has an end opening that leads into an internal sliding groove. During assembly, the limiting block is inserted through the opening and captured by the groove. The block's cross-sectional dimensions are matched to the groove so the fit is tight enough to prevent wobble but smooth enough to slide vertically. Because the groove runs along the height direction of the backrest panel, the limiting block can translate up and down, defining the adjustable path of the backrest relative to the support assembly. In some embodiments, the limiting block includes an optional protrusion (e.g., C-shaped in section) that increases contact area and friction with the groove walls, improving guidance and reducing unintended slip. An abutment segment at the end of the limiting block (toward the top of the backrest and away from the support assembly) has a larger cross-section than the main support rod. When the backrest panel is moved (e.g., lowered), this segment contacts the upper portion of the support assembly and stops further travel, thus limiting movement of the backrest panel along the height direction. In some embodiments, a mounting hole in the main support rod allows a fastener (e.g., screw or rivet) to press against the limiting block within the groove. This secures the backrest at predefined height positions and prevents accidental disengagement of the block from the groove during use. The block can still be released for disassembly by removing the fastener. Thus, the limiting block provides a keyed, sliding connection that both guides the backrest's vertical adjustment and enables selective locking and safe travel limits, while also allowing detachment when desired.

[0074] In accordance with some embodiments, the disclosed folding chair design offers at least the following advantages. First, it ensures a tight fit between the limiting block 112 and the sliding groove 1212, thereby improving accuracy and stability of the connection, and reducing wobbling or gaps caused by dimension mismatch. Second, the matching cross-sectional dimensions ensure that the limiting block 112 is firmly fixed in the sliding groove 1212, increasing the strength of the connection point and making the entire folding chair 100 structure more stable and able to withstand greater external forces. Third, because the dimensions of the limiting block 112 and the sliding groove 1212 match, wear caused by relative movement between the limiting block and the sliding groove can be reduced, extending the service life of the folding chair 100. Fourth, when assembling the folding chair 100, the matching dimensions of the limiting block 112 and the sliding groove 1212 make it easier for the user to insert the limiting block 112 into the sliding groove 1212, improving operational convenience and preventing the user from mistakenly inserting the limiting block 112 into a mismatched groove, thus avoiding damage to the folding chair 100 or causing safety hazards. Fifth, in mass production, the matching dimensions can ensure consistency of each assembly, reduce errors in production, and improve the overall quality of the product.

[0075] As shown in FIG. 1 to FIG. 6, in some embodiments, the backrest panel 11 is provided with an abutment segment 113, which is located at an end of the limiting block 112, away from the support assembly 12.

[0076] Along the height direction H of the backrest panel 11, the cross-sectional dimension of the abutment segment 113 is greater than the cross-sectional dimensions of the first member 121, so as to limit a movement distance of the backrest panel 11 relative to the support assembly 12 (e.g., to limit a position of the backrest panel 11).

[0077] In some embodiments, the abutment segment 113 has a ring-shaped wrapping structure, and is disposed at a top end of the backrest panel 11 and extends all the way to an end of the limiting block 112.

[0078] Thus, based on the foregoing structural form, a function of the abutment segment 113 is to limit a movement distance of the backrest panel 11 relative to the support assembly 12. Since the cross-sectional dimension of the abutment segment 113 is greater than that of the first member 121, the abutment segment 113 will eventually contact the top of the support assembly 12 when the backrest panel 11 slides along the first member 121, thereby preventing the backrest panel 11 from moving further, ensuring the correct position of the backrest panel 11 during assembly, preventing the backrest panel 11 from being over-folded during the folding process, and avoiding damage or deformation due to over-folding.

[0079] In some embodiments, the limiting block 112 includes a protrusion 1121 and a sliding segment 1122. One side of the sliding segment 1122 is the backrest panel 11, and the other side of the sliding segment is the protrusion 1121. In some embodiments, the protrusion 1121 is disposed on a side of the sliding segment 1122, near the abutment segment 113. In some embodiments, the sliding segment 1122 and the protrusion 1121 are integrally formed.

[0080] In some embodiments, along the height direction H of the backrest panel 11, a length of the protrusion 1121 is less than a length of the sliding segment 1122, and the protrusion 1121 is configured to be engaged with the first member 121.

[0081] It may be understood that in some embodiments, the protrusion 1121 is configured to be engaged with the first member 121 and can provide additional friction force, so as to make the connection between the backrest panel 11 and the support assembly 12 more secure and reduce relative sliding during use. Furthermore, the protrusion may function as a guide during assembly, helping the limiting block 112 to be correctly inserted into the sliding groove 1212, thereby preventing mis-operation. In addition, the one-piece molded structure (e.g., integrally formed structure) eliminates the need for additional assembly steps, thus simplifying the production steps for the limiting block 112, simplifying the production process, and allows it to withstand greater external forces, improving the overall strength of the folding chair 100. In addition, the protrusion 1121 than the sliding segment 1122, resulting in reduced material usage and lower costs without sacrificing functionality.

[0082] FIG. 8 is a cross-sectional view of section A-A of an example folding chair shown in FIG. 7, in accordance with some embodiments, and FIG. 9 is an enlarged view of an example part (e.g., part Y) of an example folding chair shown in FIG. 8, in accordance with some embodiments. Referring to FIG. 9, in some embodiments, along the height direction of the backrest panel 11, a cross-sectional shape of the protrusion 1121 is a C-shaped structure. In some embodiments, the cross-sectional shape of the protrusion 1121 is a U-shaped structure along the height direction of the backrest panel 11.

[0083] In accordance with some embodiments, the C-shaped (or U-shaped) structure design has the following advantages. The C-shaped structure can better match the shape of the first member 121, providing a more stable and reliable locking effect, reducing relative sliding, and improving the reliability of the connection. Furthermore, the C-shaped section generally has a relatively high structural strength, and can bear relatively large forces and is not easily deformed, thereby improving overall durability of the folding chair 100. The C-shaped structure can increase an area between the C-shaped structure and the first member 121, can better distribute pressure from the backrest panel 11, thus reducing concentrated loads on a single part of the support assembly 12 and prolonging a service life of the support assembly 12. The C-shaped structure further absorbs and disperses impact force to a certain extent, provide a certain shock absorption effect and improving comfort during use.

[0084] As shown in FIG. 1 to FIG. 6, in some embodiments, the folding chair 100 further includes a seat portion 13 (e.g., a seat). The seat portion 13 provides the foundation for sitting. The seat portion 13 includes two sides that are each provided with a support assembly 12. The seat portion 13 is located below the backrest panel 11.

[0085] In some embodiments, the support assembly 12 further includes a second member 122, which is located near the seat portion 13 and above the seat portion 13. The second member 122 is configured to be rotatably connected to the first member 121. A rotating ring is provided at a connection (e.g., a joint) between the first member 121 and the second member 122. In some embodiments, the two ends of the rotating ring 123 are respectively hinged to the first member 121 and the second member 122.

[0086] It may be understood that the arrangement of the second member 122 increases the support points for the seat portion 13 and together with the first member 121, improves stability and load-bearing capacity of the entire folding chair 100.

[0087] Furthermore, the design of the rotating ring 123 allows for a certain rotation angle between the first member 121 and the second member 122, such that when the folding chair 100 is folded and unfolded, the first member 121 and the second member 122 can rotate relative to each other, thereby realizing the folding function of the folding chair 100 and facilitating storage and carrying. In addition, as a hinge point, the rotating ring 123 can also distribute pressure and reduce wear on individual connection points, thereby improving the durability of the folding chair 100. The design of the rotating ring 123 also prevents the support assembly 12 from accidentally disengaging and / or falling off, thus safety of the folding chair 100 is improved.

[0088] In some embodiments, when the folding chair 100 is not in use (e.g., in the stowed state or folded state), the second member 122 can fit against the first member 121. When the folding chair 100 is in use, the second member 122 and the first member 121 provide relative support, playing a role in connection and stability.

[0089] FIG. 10 is a cross-sectional view of section B-B of an example folding chair shown in FIG. 7, in accordance with some embodiments, and FIG. 11 is an enlarged view of an example part (e.g., part Z) of an example folding chair shown in FIG. 10, in accordance with some embodiments. In some embodiments, the two sides of the seat portion 13 are each provided with a third member 131, and the support assembly 12 is connected to the seat portion 13 through the one or more third members 131, to increase a load-bearing strength of the seat portion 13.

[0090] For example, when a user sits on the folding chair 100, the one or more third members 131 between the seat portion 13 and the support assembly 12 can bear all shearing forces provided by the user. Therefore, the arrangement of the one or more third members 131 can enhance a connection strength between the seat portion 13 and the support assembly 12, and the seat portion 13 can better distribute and withstand the shearing forces when bearing the weight of the user, so as to improve a bearing capacity of the folding chair 100 and help reduce wear of the seat portion 13 and the support assembly 12 by bearing and dispersing the shearing forces, thereby prolonging the service life of the folding chair 100. In addition, when the user sits on the folding chair 100, the third member 131 helps prevent the seat portion 13 from bending or deforming under pressure, thus maintaining the flatness and stability of the seat portion 13. The third member 131 also reduces movement of the seat portion 13 in a horizontal direction, improving the overall stability of the folding chair 100 during use and preventing the folding chair 100 from wobbling due to the movement of the seat portion 13.

[0091] In some embodiments, as shown in FIG. 11, along the height direction of the backrest panel 11, the third member 131 has a C-shaped bending structure, and the seat portion 13 is provided with a groove 132 at the position corresponding to the third member 131. The end of the third member 131 can be embedded in the groove 132 to enhance the structural strength of the seat portion 13.

[0092] Specifically, the third member 131 is arranged on a side surface of a middle portion and a bottom portion of the seat portion 13. The middle portion of the seat portion 13 is provided with a transverse (e.g., horizontal) groove 132. The bottom portion of the seat portion 13 is provided with a vertical groove 132, so that two bent ends of the third member 131 can be respectively embedded in the two grooves 132, so as to enhance the connection strength between the third member 131 and the seat portion 13.

[0093] Therefore, based on the foregoing structural form, the C-shaped third member 131 forms a tight fixed connection by being embedded in the grooves 132 on both ends, which improves the connection strength between the third member 131 and the seat portion 13 and makes the seat portion 13 more stable when bearing weight. The third member 131 is arranged at the middle portion and bottom portion of the seat portion 13, which helps to evenly distribute the pressure and shearing force generated by the user's weight, thus improving the structural stability of the entire folding chair 100. In addition, the C-shaped structure can effectively resist bending and deformation of the seat portion 13 under pressure, and maintain the flatness of the seat portion 13.

[0094] As shown in FIG. 1 and FIG. 2, in some embodiments, an outer wall surface of the first member 121 is provided with one or more mounting holes 1213 that are configured for use by the connecting member 124 to extend through and abut against the limiting block 112, to strengthen the connection between the backrest panel 11 and the support assembly 12.

[0095] In some embodiments, the connecting member 124 (e.g., a connector) is a screw. In some embodiments, the connecting member 124 is a rivet. In some embodiments, the connecting member is any fastener that can be used to mechanically connect the backrest panel 11 and the support assembly 12, and allows for disassembly.

[0096] The mounting hole 1213 is provided on the first member 121, and the limiting block 112 is connected to the first member 121 through the connecting member 124, so that the connection strength between the backrest panel 11 and the support assembly 12 can be effectively improved, making the folding chair 100 more stable when bearing weight. This prevents the limiting block 112 from accidentally disengaging from the sliding groove 1212 due to the external force, thereby improving the stability of the folding chair 100. In addition, the cooperation of the connecting member 124, the limiting block 112, and the mounting hole 1213 also provides a fixing function, preventing loosening due to vibration or other reasons after prolonged use. The design of the mounting holes 1213 makes the disassembly and reinstallation of the connecting member 124 more convenient.

[0097] FIG. 12 is a flow diagram of an example method 1200 for a folding chair assembly, in accordance with some embodiments. The folding chair assembly is operable in a deployed state and a stowed state. The method includes providing (operation 1202) a support assembly (e.g., support assembly 12) including one or more first members (e.g., first member 121) configured to rest on a ground and support a folding chair (e.g., folding chair 100 when the folding chair is in the deployed state. The method includes providing (operation 1204) a seat portion (e.g., seat portion 13) coupled to the support assembly when the folding chair is in the deployed state and in the stowed state. The method also includes providing (operation 1206) a backrest panel (e.g., backrest panel 11) coupled to the support assembly, independent of the seat portion. The backrest panel is detachable from the support assembly when the folding chair is in the deployed state and in a stowed state.

[0098] Turning now to some example embodiments:

[0099] (A1) In accordance with some embodiments, a folding chair 100 is configured to operate in a deployed state and a stowed state. The folding chair 100 comprises a support assembly 12 that includes one or more first members 121 and an engaging structure 14. The one or more first members 121 are configured to rest on a ground and support the folding chair 100 when the folding chair is in the deployed state. The folding chair comprises a seat portion 13 independently coupled to the support assembly 12 when the folding chair is in the deployed state and in the stowed state. The folding chair comprises a backrest panel 11 independently coupled to the support assembly. The backrest panel 11 is configured to engage with the support assembly 12 via the engaging structure 14. The backrest panel 11 is detachable from the support assembly 12.

[0100] (A2) In some embodiments of A1, the backrest panel 11 includes one or more components 125. Each of the one or more components 125 is configured to (i) couple to a respective first member of the one or more first members 121 of the support assembly and (ii) extend relative to the support assembly along the height direction H of the backrest panel 11, thereby causing the backrest panel 11 to adjust relative to the support assembly 12.

[0101] (A3) In some embodiments of A2, each first member 121, of the one or more first members of the support assembly, has a first cross-sectional dimension. Each of the one or more components 125 of the backrest panel has a second cross-sectional dimension that complements (e.g., matches) the first cross-sectional dimension.

[0102] (A4) In some embodiments of any o A1-A3, the support assembly 12 includes one or more second members 122, each of the one or more second members 122 is rotatably coupled to a respective first member 121 of the one or more first members of the support assembly and cause the folding chair to operate in the deployed state and the stowed state.

[0103] (A5) In some embodiments of A4, a respective second member 122, of the one or more second members, is rotatably coupled to a respective first member 121 of the one or more first members via a rotating ring 123.

[0104] (A6) In some embodiments of any of A4-A5, the support assembly 12 includes one or more third members 131, distinct from the one or more first members 121 and the one or more second members 122. The one or more third members 131 are configured to support a load on the seat portion 13 of the folding chair 100. The seat portion 13 is coupled to the support assembly via the one or more third members 131.

[0105] (A7) In some embodiments of A6, along the height direction of the backrest panel 11, a respective third member 131, of the one or more third members, has a C-shaped bending structure. A position of the seat portion corresponding to the respective third member is provided with a groove 132. An end of the respective third member is configured to be embedded into the groove, to improve structural strength of the seat portion.

[0106] (A8) In some embodiments of any of A4-A7, each of the one or more second members 122 comprises a rod.

[0107] (A9) In some embodiments of any of A1-A8, each of the one or more first members 121 comprises a rod.

[0108] (A10) In some embodiments of any of A9, the rod includes an opening 1211 at an end facing the backrest panel and a sliding groove 1212 facing an inner side surface of the backrest panel. The sliding groove 1212 is coupled to the opening 1211 and is configured to slide along the height direction of the backrest panel 11 to adjust a position of the backrest panel 11 relative to the support assembly 12.

[0109] (A11) In some embodiments of any of A1-A10, a respective first member 121, of the one or more first members, includes one or more mounting holes 1213. Each of the one or more mounting holes 1213 is configured to receive a connecting member 124 for coupling the backrest panel 11 to the support assembly 12.

[0110] (A12) In some embodiments of any of A1-A11, the backrest panel 11 further includes an abutment segment 113 that is positioned at an end of the one or more components 125 of the backrest panel 11, away from the support assembly 12. Along the height direction of the backrest panel, a cross-sectional dimension of the abutment segment is greater than a cross-sectional dimension of a respective first member of the support assembly, thereby limiting a movement distance of the backrest panel relative to the support assembly.

[0111] (A13) In some embodiments of A12, each component 125 of the one or more components of the backrest panel comprises a limiting block 112. The limiting block 112 includes a protrusion 1121 and a sliding segment 1122. A first side of the sliding segment is the backrest panel. A second side of the sliding segment is the protrusion. The protrusion is arranged on a side of the sliding segment close to the abutment segment, and the sliding segment and the protrusion are integrally formed. Along the height direction of the backrest panel, a length of the protrusion is less than a length of the sliding segment, and the protrusion is configured to be engaged with the one or more first members.

[0112] (A14) In some embodiments of A13, the abutment segment 113 comprises a ring-shaped wrapping structure disposed proximate a top end of the backrest panel 11 and extending to an end of the limiting block 112.

[0113] (A15) In some embodiments of any of A13-1A4, a cross-sectional shape of the protrusion 1121 is a C-shaped structure along the height direction of the backrest panel 11.

[0114] (A16) In some embodiments of any of A13-A14, a cross-sectional shape of the protrusion 1121 is U-shaped along the height direction of the backrest panel 11.

[0115] (A17) In some embodiments of any of A1-A16, a respective first member, of the one or more first members, comprises a hollow tubular structure.

[0116] (A18) In some embodiments of A17, an inner wall surface of the respective first member 121 facing the backrest panel 11 is provided with a notch. The notch and the tubular structure form a sliding groove of the respective first member.

[0117] (A19) In some embodiments of any of A1-A18, a position of the backrest panel 11 is adjustable along a height direction H of the backrest panel 11 via movement of the backrest panel 11 relative to the supporting assembly 12 while the backrest panel 11 is engaged with the engaging structure 14 of the support assembly 12.

[0118] The terminology used in the description of the various described implementations herein is for the purpose of describing particular implementations only and is not intended to be limiting. As used in the description of the various described implementations and the appended claims, the singular forms “a,”“an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term “and / or” as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. It will be further understood that the terms “includes,”“including,”“comprises,” and / or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. Additionally, it will be understood that, although the terms “first,”“second,” etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

[0119] As used herein, the term “if” is, optionally, construed to mean “when” or “upon” or “in response to determining” or “in response to detecting” or “in accordance with a determination that,” depending on the context. Similarly, the phrase “if it is determined” or “if [a stated condition or event] is detected” is, optionally, construed to mean “upon determining” or “in response to determining” or “upon detecting [the stated condition or event]” or “in response to detecting [the stated condition or event]” or “in accordance with a determination that [a stated condition or event] is detected,” depending on the context.

[0120] The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the claims to the precise forms disclosed. Many modifications and variations are possible in view of the above teachings. The embodiments were chosen and described in order to best explain principles of operation and practical applications, to thereby enable others skilled in the art.

[0121] Although various drawings illustrate a number of logical stages in a particular order, stages that are not order dependent may be reordered and other stages may be combined or broken out. While some reordering or other groupings are specifically mentioned, others will be obvious to those of ordinary skill in the art, so the ordering and groupings presented herein are not an exhaustive list of alternatives. Moreover, it should be recognized that the stages can be implemented in hardware, firmware, software or any combination thereof.

Claims

1. A folding chair, configured to operate in a deployed state and a stowed state, the folding chair comprising:a support assembly including one or more first members and an engaging structure, wherein the one or more first members are configured to rest on a ground and support the folding chair when the folding chair is in the deployed state;a seat portion independently coupled to the support assembly when the folding chair is in the deployed state and in the stowed state; anda backrest panel independently coupled to the support assembly, wherein:the backrest panel is configured to engage with the support assembly via the engaging structure; andthe backrest panel is detachable from the support assembly.

2. The folding chair of claim 1, wherein:the backrest panel includes one or more components, each of the one or more components configured to (i) couple to a respective first member of the one or more first members of the support assembly and (ii) extend relative to the support assembly along the height direction of the backrest panel, thereby causing the backrest panel to adjust relative to the support assembly.

3. The folding chair of claim 2, wherein:each first member of the one or more first members of the support assembly has a first cross-sectional dimension; andeach of the one or more components of the backrest panel has a second cross-sectional dimension that complements the first cross-sectional dimension.

4. The folding chair of claim 1, wherein:the support assembly includes one or more second members, each of the one or more second members is rotatably coupled to a respective first member of the one or more first members of the support assembly and cause the folding chair to operate in the deployed state and the stowed state.

5. The folding chair of claim 4, wherein a respective second member of the one or more second members is rotatably coupled to a respective first member of the one or more first members via a rotating ring.

6. The folding chair of claim 4, wherein:the support assembly includes one or more third members, distinct from the one or more first members and the one or more second members, the one or more third members configured to support a load on the seat portion of the folding chair;wherein the seat portion is coupled to the support assembly via the one or more third members.

7. The folding chair of claim 6, wherein:along the height direction of the backrest panel, a respective third member of the one or more third members has a C-shaped bending structure, a position of the seat portion corresponding to the respective third member is provided with a groove, and an end of the respective third member is configured to be embedded into the groove, to improve structural strength of the seat portion.

8. The folding chair of claim 1, wherein a respective first member and a respective second member each comprises a rod.

9. The folding chair of claim 8, wherein the rod includes:an opening at an end facing the backrest panel; anda sliding groove facing an inner side surface of the backrest panel, wherein the sliding groove is coupled to the opening and is configured to slide along the height direction of the backrest panel to adjust a position of the backrest panel relative to the support assembly.

10. The folding chair of claim 1, wherein a respective first member of the one or more first members includes one or more mounting holes, each of the one or more mounting holes configured to receive a connecting member for coupling the backrest panel to the support assembly.

11. The folding chair of claim 1, wherein:the backrest panel further includes an abutment segment that is positioned at an end of one or more components of the backrest panel, away from the support assembly; andalong the height direction of the backrest panel, a cross-sectional dimension of the abutment segment is greater than a cross-sectional dimension of a respective first member of the support assembly, thereby limiting a movement distance of the backrest panel relative to the support assembly.

12. The folding chair of claim 11, wherein:each component of the one or more components of the backrest panel comprises a limiting block;the limiting block includes a protrusion and a sliding segment;a first side of the sliding segment is the backrest panel;a second side of the sliding segment is the protrusion;the protrusion is arranged on a side of the sliding segment close to the abutment segment, and the sliding segment and the protrusion are integrally formed; andalong the height direction of the backrest panel, a length of the protrusion is less than a length of the sliding segment, and the protrusion is configured to be engaged with the one or more first members.

13. The folding chair of claim 12, wherein the abutment segment comprises a ring-shaped wrapping structure disposed proximate a top end of the backrest panel and extending to an end of the limiting block.

14. The folding chair of claim 12, wherein a cross-sectional shape of the protrusion is a C-shaped structure along the height direction of the backrest panel.

15. The folding chair of claim 12, wherein a cross-sectional shape of the protrusion is U-shaped along the height direction of the backrest panel.

16. The folding chair of claim 1, wherein a respective first member, of the one or more first members, comprises a hollow tubular structure.

17. The folding chair of claim 16, wherein an inner wall surface of the respective first member facing the backrest panel is provided with a notch.the notch and the hollow tubular structure form a sliding groove of the respective first member.

18. The folding chair of claim 1, wherein a position of the backrest panel is adjustable along a height direction of the backrest panel via movement of the backrest panel relative to the supporting assembly while the backrest panel is engaged with the engaging structure of the support assembly.

19. A folding chair configured to transition between a deployed state and a stowed state, the folding chair comprising:means for supporting the chair relative to a surface;means for seating a user coupled to the means for supporting;means for supporting the user's back comprising a backrest panel;means for engaging the backrest panel with the means for supporting;means for permitting detachment of the backrest panel from the means for supporting in both the deployed state and the stowed state;means for enabling folding of the chair between the deployed state and the stowed state; andmeans for reinforcing a connection between the means for seating and the means for supporting.

20. A method for folding chair assembly, operable in a deployed state and a stowed state, the method comprising:providing a support assembly including one or more first members configured to rest on a ground and support a folding chair when the folding chair is in the deployed state;providing a seat portion coupled to the support assembly when the folding chair is in the deployed state and in the stowed state; andproviding a backrest panel coupled to the support assembly, independent of the seat portion, wherein the backrest panel is detachable from the support assembly when the folding chair is in the deployed state and in a stowed state.

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