FOLDING CHAIR

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; and

a backrest panel independently coupled to the support assembly, wherein:

the backrest panel is configured to engage with the support assembly via the engaging structure; and

the 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; and

each 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; and

a 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; and

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.

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; and

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.

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; and

means 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; and

providing 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.