Seat and assembly and disassembly method thereof

Abstract

The present application discloses a seat and an assembly and disassembly method thereof, wherein the seat comprises a seat frame and at least one support member connected to the seat frame, wherein the support member comprises a flexible member and an abutment member connected to the flexible member, wherein the flexible member comprises a support surface and a deformation surface opposite to the support surface, and a plurality of abutment members are arranged on the deformation surface; wherein the support surface of the flexible member contacts the seat frame, and the flexible member bends toward the deformation surface so that the plurality of abutment members abut against each other to form a set curved surface shape. The seat and assembly and disassembly method of the present application can be designed into a multi-curved shape for easy storage and transportation.

Description

Technical Field

[0001] The present application relates to the technical field of household articles, and in particular to a seat and an assembly and disassembly method thereof. Background Art

[0002] As society develops, people's pursuit of quality of life continues to improve. When choosing furniture, consumers are no longer limited to a single function; they increasingly seek furniture that can be easily stored when not in use. Manufacturers, on the other hand, are increasingly considering the space and cost of furniture storage and transportation.

[0003] Currently, most seating, such as sofas, is shipped pre-assembled and fixed. This leads to significant storage and shipping costs after packaging. Existing detachable upholstered furniture often uses metal connectors for single or multiple connections. These limitations prevent the creation of complex, multi-curved designs. Summary of the Invention

[0004] In order to solve the above technical problems, the present application provides a seat and an assembly and disassembly method thereof, which has a simple structure, is easy to assemble and disassemble, reduces storage and transportation space, and can achieve a complex multi-curved appearance design.

[0005] In a first aspect, the present application provides a seat comprising a seat frame and at least one support member connected to the seat frame, the support member comprising a flexible member and an abutment member connected to the flexible member, the flexible member comprising a support surface and a deformable surface opposite to the support surface, a plurality of the abutment members being disposed on the deformable surface;

[0006] The supporting surface of the flexible member contacts the seat frame, and the flexible member bends toward the deformation surface so that the plurality of abutting members abut against each other to form a set curved surface shape.

[0007] By adopting the above-mentioned technical solution, the armrest or backrest made of the support member can realize the change of the curved surface by bending the flexible member. When the flexible member bends in the direction of the deformation surface, the support members abut against each other to prevent the flexible member from continuing to bend in the direction of the deformation surface. The curved surface shape formed at this time is the designed curved surface shape. Through the structural design of the support member, different complex curved surface shapes can be achieved to meet the diverse appearance design of the seat. The flexible member can be stretched into a plane or bent in the direction of the support surface and rolled into a cylindrical shape, which takes up little space and is convenient for storage when the seat is not in use or for storage and transportation during the production, manufacturing and sales processes.

[0008] In combination with the first aspect, a further solution is that the cross-section of the abutment member is a trapezoid. When the flexible member bends toward the deformation surface, the surface connected to the waist of any trapezoid abuts against the surface connected to the waist of an adjacent trapezoid, and the angle between the adjacent trapezoid waists ranges from 5° to 30°.

[0009] By adopting this technical solution, when the flexible member bends in the direction of deformation, the side surfaces of the support member's trapezoidal waists abut against each other, maintaining a stable design curve. This also increases structural strength and allows it to withstand a certain amount of pressure. The trapezoidal shape also facilitates processing and reduces processing costs. The angle between adjacent trapezoidal waists ranges from 5° to 30°, making the curved surface formed by the support member transition more smoothly and enhancing the product's aesthetics.

[0010] In combination with the first aspect, in a further solution, the abutment member is detachably connected to the flexible member, and the length of the lower base of the trapezoid ranges from 10 mm to 100 mm.

[0011] By adopting the above technical solution, the abutment member and the flexible member are detachably connected, facilitating disassembly and transportation, as well as after-sales maintenance. The length of the lower base of the trapezoid is designed to range from 10 mm to 100 mm. When the support member is bent into a predetermined curved surface, the curved surface can be changed, and the planar connection within the curved surface can be reduced to a certain extent according to design requirements, thereby increasing the smoothness of the curved surface.

[0012] In combination with the first aspect, in a further solution, the curvature radius corresponding to the curvature of the curved surface ranges from 70 mm to 800 mm, and the tangent continuity error between the curved surfaces of different curvatures is less than 0.5°.

[0013] By adopting this technical solution, we can achieve a well-defined curved surface design within a curvature radius range of 70mm to 800mm, while also balancing comfort and strength. The tangent continuity error between curved surfaces of varying curvatures is less than 0.5°, resulting in a smoother support surface and a better touch experience.

[0014] In combination with the first aspect, a further solution includes a backrest and two armrests made of support members, the two armrests are respectively arranged on both sides of the backrest, and the backrest and the two armrests and the seat frame enclose an open riding space.

[0015] By adopting the above technical solution, a backrest and two armrests made of the support parts are fixedly connected by connecting parts to form a stable curved shape. The product can be designed into a sofa chair, a reclining chair, etc. for the convenience of users to sit on. The structure is stable and the appearance is beautiful. It is also convenient to disassemble and store when not in use.

[0016] In combination with the first aspect, a further solution is that connecting parts are respectively provided on both sides of the backrest and one side of the armrest, and the connecting parts on both sides of the backrest are respectively connected to the connecting parts on one side of the adjacent armrest, so that the backrest and the two armrests respectively form the set curved surface shape and are connected to each other as a whole.

[0017] By adopting the above technical solution, the connector can connect the backrest and armrest into one piece to achieve a predetermined stable curved shape. The connector is a detachable structure such as a zipper, which is easy to disassemble and assemble while ensuring the connection strength and appearance.

[0018] In combination with the first aspect, a further solution is that at least one side of the backrest and / or the armrest is provided with a recess, and the connecting member is provided in the recess. After the backrest and the two armrests are connected into one, the connecting member is not higher than the supporting surface of the backrest and the armrests.

[0019] By adopting the above technical solution, the connecting part is located in the recess, which is convenient for hiding the connecting part. After the connecting part connects the backrest and the armrest into one, the connecting part is no higher than the supporting surface of the backrest and the armrest, making the appearance smoother and more beautiful and the feel better.

[0020] In combination with the first aspect, a further solution is that the seat frame is provided with a plurality of fixing holes for connecting the backrest and the armrests, the bottom and / or top of the seat frame are provided with openings connected to the plurality of fixing holes, and a plurality of fasteners are installed from the opening positions and connected to the fixing holes to fix the backrest and the armrests to the seat frame respectively.

[0021] By adopting the above technical solution, the fixing holes are used for assembling and fixing the connecting parts between the seat frame and the backrest and armrests. When the backrest or armrest is connected to the seat frame, the connecting parts such as bolts or nuts can be placed into the fixing holes through the openings for assembly. The connecting parts are hidden inside the seat frame and will not affect the appearance of the seat.

[0022] In combination with the first aspect, the seat frame is provided with a contact surface for contacting the ground, and the side of the seat frame opposite to the contact surface is a pressure-bearing surface for supporting the passenger, and the orthographic projection of the part of the pressure-bearing surface located at the opening on the contact surface does not coincide with the contact surface; the contours of the parts of the two armrests located in the riding space are hyperbolic surfaces.

[0023] By adopting this technical solution, the orthographic projection of the exposed portion of the pressure-bearing surface on the contact surface does not overlap with the contact surface, reducing interference from the seat frame with the passenger's legs and feet, enhancing the riding experience. The contours of the two armrests within the passenger compartment are hyperbolic, which better conforms to ergonomics, provides greater passenger comfort, and enhances the product's appearance.

[0024] In a second aspect, the present application provides an assembly and disassembly method applicable to the seat described in the first aspect, the assembly and disassembly method comprising an assembly method and a disassembly method, wherein:

[0025] The assembly method comprises the following steps:

[0026] Installing the armrest by bringing the support surface of the armrest into contact with the seat frame, and installing fasteners from the opening to secure the seat frame to the armrest;

[0027] Backrest installation: contacting the support surface of the backrest with the seat frame, and installing fasteners from the opening position to fix the seat frame and the backrest;

[0028] Connecting, the connecting piece on one side of the backrest close to the seat frame and the connecting piece on the side of the armrest adjacent to the backrest close to the seat frame are connected sequentially from bottom to top to the upper plane position of the seat frame; the flexible piece of the armrest is bent in the direction of the deformation surface so that the multiple abutment pieces abut against each other to form a set curved surface shape; the flexible piece of the backrest is bent in the direction of the deformation surface so that the multiple abutment pieces abut against each other to form a set curved surface shape; the connecting piece at the end of the backrest away from the seat frame and the connecting piece at the end of the armrest away from the seat frame are connected and connected sequentially to the positions of the aforementioned connecting pieces in the direction of the seat frame;

[0029] The disassembly method comprises the following steps:

[0030] Split, separate the connecting piece at the end of the backrest away from the seat frame and the connecting piece at the end of the armrest away from the seat frame in a direction away from the seat frame;

[0031] Folding, bend the flexible parts of the armrest and backrest toward the supporting surface respectively, separate the abutting surfaces of multiple abutting parts from each other, and stack the armrest and backrest on or in the seat frame for overall packaging; or separate all connecting parts between the armrest and backrest, remove all fasteners from the opening, separate the backrest and armrest from the seat frame, and stack the armrest and backrest flat for packaging.

[0032] By adopting the above technical solution, the disassembly and assembly of the backrest and armrests is more convenient and efficient, which is not only conducive to mass production, but also allows the backrest and armrests to be made into standard parts, which is conducive to standardized production, higher production efficiency and lower production costs. The disassembly and assembly method also facilitates assembly and maintenance at the sales end, which helps reduce sales and maintenance costs.

[0033] In summary, this application has at least one of the following beneficial technical effects:

[0034] 1. The seat of this application can realize a variety of complex curved surface shapes according to different designs, meeting the diverse and beautiful design of the product.

[0035] 2. The seat of the present application can be easily assembled and disassembled, which helps to reduce packaging, storage and transportation space, reduce storage and transportation costs, and is also convenient for users to store when not in use.

[0036] 3. The assembly and disassembly method of the present application is conducive to standardized design and production, can reduce processing, transportation and after-sales costs, and is conducive to mass customized production. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a structural diagram of the deformation surface direction of the first embodiment of the support member of the present application;

[0038] Figure 2 yes Figure 1 A magnified schematic diagram of area A in FIG;

[0039] Figure 3 It is a front view of the first embodiment of the support member of the present application;

[0040] Figure 4 yes Figure 3 A magnified schematic diagram of area B in FIG;

[0041] Figure 5 This is a structural diagram of the support surface direction of the first embodiment of the support member of the present application;

[0042] Figure 6 yes Figure 5 A magnified schematic diagram of region C in FIG;

[0043] Figure 7 It is a structural diagram of the seat of the present application;

[0044] Figure 8 It is a schematic diagram of the frame structure of the seat of the present application;

[0045] Figure 9 This is a schematic diagram of the backrest structure of the seat of the present application;

[0046] Figure 10 This is a schematic diagram of the side structure of the backrest of the seat of the present application;

[0047] Figure 11 It is a schematic diagram of the right armrest structure of the seat of the present application;

[0048] Figure 12 This is a schematic diagram of the side structure of the right armrest of the seat of the present application;

[0049] Figure 13 It is a schematic diagram of the seat frame structure of the seat of the present application;

[0050] Figure 14 This is a structural diagram of the second embodiment of the support member of the present application;

[0051] Figure 15It is a front view of the second embodiment of the support member of the present application;

[0052] Figure 16 yes Figure 15 Schematic diagram of the enlarged area D in FIG.

[0053] Reference numerals:

[0054] 1. Flexible part; 11. Support surface; 12. Deformation surface; 13. Flexible layer; 14. Skeleton; 2. Abutment; 21. Gap; 22. Recess; 23. Slide; 3. Seat frame; 31. Lower opening; 32. First fixing hole; 33. Upper opening; 34. Concave surface; 35. Second fixing hole; 4. Seat cushion; 5. Left armrest; 6. Right armrest; 7. Backrest; 8. Connector; 9. Passenger space; a. Angle between adjacent trapezoidal waists; L. Length of lower base. DETAILED DESCRIPTION

[0055] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings. The components of the embodiments of the present invention generally described and illustrated in the accompanying drawings can be arranged and designed in a variety of different configurations. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0056] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0057] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0058] In the description of this application, it should be understood that the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on this application.

[0059] The following describes some embodiments of the present invention in detail with reference to the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0060] Example 1

[0061] See also Figures 1-6 , which is the structure of the first embodiment of the support member of this application.

[0062] See also Figure 1 and Figure 2 The support member includes a flexible member 1 and abutment members 2. The flexible member 1 includes a support surface 11 and a deformation surface 12 opposite to the support surface 11. Multiple abutment members 2 are fixed to the deformation surface 12. The flexible member 1 can be designed into different shapes according to the shape. The multiple abutment members 2 are arranged parallel to the width direction of the flexible member 1 and their end surfaces are flush with the boundaries of the flexible member 1. When the flexible member 1 bends toward the deformation surface 12, the multiple abutment members 2 abut against each other to form a set curved surface shape.

[0063] See also Figure 2 A gap 21 is provided between adjacent abutting members 2. Depending on the set curved surface shape, the gap 21 between each two adjacent abutting members 2 is the same or different in size. When the flexible member 1 bends toward the deformation surface 12, the abutting members 2 abut against each other. Different gaps 21 result in different bending radians to form the set curved surface shape.

[0064] See also Figure 3 and Figure 4 The cross section of the abutment member 2 is a trapezoid. When the flexible member 1 bends toward the deformation surface 12, the surface connecting the waist of any trapezoid abuts against the surface connecting the waist of the adjacent trapezoid to form a set curved surface shape. The angle a between the waists of adjacent trapezoids ranges from 5° to 30°, and the length L of the lower base of the trapezoid ranges from 10 mm to 100 mm. The angle of the area with a large curvature (such as the middle position) is 20°-25°, and the narrowest length L of the lower base of the trapezoid is 20-30 mm to achieve a larger bending deformation; the angle of the area with a small curvature (such as the positions on both sides) is 6°-8°, and the length L of the lower base of the trapezoid is 70-80 mm to achieve a smaller bending deformation. The curvature radius corresponding to the curvature of the set curved surface shape ranges from 70 mm to 800 mm, and the tangent continuity error between the curved surfaces of different curvatures is less than 0.5°.

[0065] See also Figure 5 and Figure 6 A recess 22 is further provided between the flexible layer 13 and the abutting member 2 .

[0066] See also Figure 7-13 , which is the seat structure of this application, wherein the backrest 7, the left armrest 5 and the right armrest 6 are all made of support members, and a cloth cover can be provided on the outside of the support member for easy appearance and disassembly and washing.

[0067] See also Figure 7The seat comprises a seat frame 3 and a backrest 7, a left armrest 5, and a right armrest 6 formed by support members. The seat frame 3 is provided with a seat cushion 4. The left armrest 5 and the right armrest 6 are respectively arranged on both sides of the backrest 7. The backrest 7, the left armrest 5, and the right armrest 6 are respectively fixedly connected to the seat frame 3. The backrest 7, the left armrest 5, and the right armrest 6 are respectively bent in the direction of the deformation surface 12. The abutment members 2 abut against each other to form a predetermined curved surface shape. Thus, the backrest 7, the left armrest 5, and the right armrest 6 and the seat frame 3 enclose a stable seating space 9. Figure 5 and Figure 7 The surfaces of the backrest 7, the left armrest 5 and the right armrest 6 located in the riding space 9 are the supporting surfaces 11, and the surfaces away from the riding space 9 are the deformation surfaces 12. Because the abutting parts 2 abut against each other, the backrest 7, the left armrest 5 and the right armrest 6 cannot be deformed in the direction of the deformation surface 12. The contours of the parts of the left armrest 5 and the right armrest 6 located in the riding space 9 are hyperbolic surfaces. Therefore, the supporting surface 11 can withstand a certain pressure to provide effective support for the back or upper limbs of the occupant.

[0068] See also Figure 8 The seat frame 3 is provided with a first fixing hole 32 for connecting to the backrest 7. An opening is provided at the bottom of the seat frame 3 that communicates with the fixing hole, providing a space for a hand to pass through the opening to insert a fastener through the first fixing hole 32 to secure the seat frame 3 and the backrest 7. The fastener can be a bolt or a screw, which passes through the first fixing hole 32 to secure the seat frame 3 and the backrest 7 together. The screw can also be fixed to the backrest 7. The screw passes through the first fixing hole 32 and is located in the seat frame 3. A nut is then inserted into the seat frame 3 through the lower opening 31 to secure it to the screw, thereby achieving a fixed connection between the backrest 7 and the seat frame 3.

[0069] See also Figure 9 and Figure 10 The support surface 11 of the backrest 7 is bent toward the deformation surface 12 to form a predetermined curved surface shape. Connectors 8 are connected to both ends of the backrest 7. In this embodiment, the connector 8 is a zipper, which is used to connect with the zipper on the adjacent armrest to fix the predetermined curved surface shape. The curvature radius of the predetermined curved surface shape is in the range of 70 mm to 800 mm. The zipper corresponds to the recess 22 (see Figure 6 ), so that the zipper does not rise above the support surface 11 of the backrest 7 and the armrest after being zipped, so as not to scratch the hands and make the surface smoother. Referring to FIG. 6 , the zipper can be set on the flexible member 1, or on the abutment member 2, or on the cloth cover on the outside of the backrest 7 or the armrest.

[0070] See also Figure 11 and Figure 12The support surface 11 of the right armrest 6 is bent toward the deformation surface 12 into a set curved shape. A zipper is connected to the side of the right armrest 6 close to the backrest 7, which is used to connect with the zipper on the side of the adjacent backrest 7 to fix the set curved shape of the right armrest 6. The curvature radius corresponding to the radian of the set curved shape is in the range of 70 mm to 800 mm.

[0071] See also Figure 13 The seat frame 3 is a frame with two diamond-shaped side surfaces. A first fixing hole 32 is provided on the side where the seat frame 3 is connected to the backrest 7. Second fixing holes 35 are provided on both sides for fixing to the left armrest 5 and the right armrest 6. An upper opening 33 and a lower opening 31 are provided on the upper and lower sides of the seat frame 3. The upper opening 33 and the lower opening 31 facilitate the installer to reach into the seat frame 3 to install fasteners. The seat frame 3 has a contact surface for contacting the ground. The side of the seat frame 3 opposite to the contact surface is a pressure-bearing surface for supporting the passenger. The orthographic projection of the pressure-bearing surface located at the opening of the passenger space 9 on the contact surface does not coincide with the contact surface. Figure 7 and Figure 13 The side opposite to the side where the seat frame 3 and the backrest 7 are installed is a concave surface 34. When the passenger sits in the riding space 9, the contact between the feet and the seat frame 3 can be reduced, making the ride more comfortable.

[0072] Example 2

[0073] See also Figure 14-16 The difference between this embodiment and the first embodiment is that the abutting member 2 and the flexible member 1 are detachably connected.

[0074] See also Figure 14 The flexible member 1 is composed of a flexible layer 13 and a frame 14 fixed to the flexible layer 13. The abutment member 2 is provided with a slide groove 23 adapted to the frame 14. The slide groove 23 can slide relative to the frame 14 to achieve installation and separation between the abutment member 2 and the flexible member 1. The advantage of this embodiment is that the flexible member 1 can be designed as a standard part. By installing different abutment members 2, parameters such as the length L of the lower base of the abutment member 2 and the angle a between adjacent trapezoidal waists can be changed to achieve different preset curved surface shapes. It is also convenient for disassembly, transportation, and after-sales maintenance.

[0075] See also Figure 15 and Figure 16 The skeleton 14 and the flexible layer 13 can be designed as a split structure and connected and fixed by gluing or wedge grooves, or the skeleton 14 and the flexible layer 13 can be designed as an integrated structure, such as by injection molding or extrusion.

[0076] See also Figure 16 The cross-sectional shape of the skeleton 14 is designed as an anti-slip structure, which can reduce the possibility of the abutment member 2 being detached from the flexible member 1.

[0077] Example 3

[0078] This embodiment provides an assembly and disassembly method, which is applicable to the seat of embodiment 1 or embodiment 2.

[0079] The assembly and disassembly methods include assembly method and disassembly method, wherein:

[0080] The assembly method includes the following steps:

[0081] To install the armrest, place the support surface 11 of the armrest in contact with the seat frame 3 and install the fasteners from the opening to secure the seat frame 3 to the left armrest 5 or the right armrest 6;

[0082] To install the backrest 7, place the support surface 11 of the backrest 7 in contact with the seat frame 3, and install the fasteners from the opening to secure the seat frame 3 to the backrest 7;

[0083] Connect, connect the connecting piece 8 on one side of the backrest 7 close to the seat frame 3 and the connecting piece 8 on the side adjacent to the left armrest 5 or the right armrest 6 and the backrest 7 close to the seat frame 3 from bottom to top in sequence to the upper plane position of the seat frame 3; the flexible piece 1 of the left armrest 5 or the right armrest 6 is bent in the direction of the deformation surface 12 so that the multiple abutment pieces 2 abut against each other to form a set curved surface shape, and the flexible piece 1 of the backrest 7 is bent in the direction of the deformation surface 12 so that the multiple abutment pieces 2 abut against each other to form a set curved surface shape; connect the connecting piece 8 at the end of the backrest 7 away from the seat frame 3 and the connecting piece 8 at the end of the left armrest 5 or the right armrest 6 away from the seat frame 3 and connect them to the aforementioned connecting piece 8 positions in sequence in the direction of the seat frame 3;

[0084] The disassembly method includes the following steps:

[0085] Disassemble, separate the connecting piece 8 at the end of the backrest 7 away from the seat frame 3 and the connecting piece 8 at the end of the armrest away from the seat frame 3 in a direction away from the seat frame 3;

[0086] Fold, bend the flexible parts 1 of the left armrest 5, the right armrest 6 and the backrest 7 toward the support surface 11 respectively, separate the abutting surfaces of the multiple abutting parts 2 from each other, and stack the armrests and the backrest 7 on the seat frame 3 or in the seat frame 3 for overall packaging; or separate all the connecting parts 8 between the left armrest 5, the right armrest 6 and the backrest 7 respectively, remove all the fasteners from the upper opening 33 or the lower opening 31, separate the backrest 7, the left armrest 5, the right armrest 6 and the seat frame 3, and stack the left armrest 5, the right armrest 6 and the backrest 7 flat for packaging.

[0087] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. The present invention is subject to various changes, modifications, substitutions, and variations without departing from the spirit and scope of the present invention. Such changes, modifications, substitutions, and variations fall within the scope of the invention as claimed.

Claims

1. A seat comprising a seat frame (3), characterized in that: It also includes at least one supporting member connected to the seat frame (3), the supporting member including a flexible member (1) and an abutting member (2) connected to the flexible member (1), the flexible member (1) including a supporting surface (11) and a deformation surface (12) opposite to the supporting surface (11), and a plurality of the abutting members (2) are arranged on the deformation surface (12); The supporting surface (11) of the flexible member (1) contacts the seat frame (3), and the flexible member (1) bends toward the deformation surface (12) so that the plurality of abutting members (2) abut against each other to form a set curved surface shape.

2. The seat according to claim 1, characterized in that The cross section of the abutment member (2) is a trapezoid. When the flexible member (1) bends toward the deformation surface (12), the surface connected to the waist of any trapezoid abuts against the surface connected to the waist of an adjacent trapezoid. The angle (a) between the waists of the adjacent trapezoids ranges from 5° to 30°.

3. The seat according to claim 2, characterized in that The abutment member (2) is detachably connected to the flexible member (1), and the length (L) of the lower base of the trapezoid ranges from 10 mm to 100 mm.

4. The sitting device according to claim 1, wherein: The curvature radius corresponding to the curvature of the curved surface ranges from 70 mm to 800 mm, and the tangent continuity error between the curved surfaces with different curvatures is less than 0.5°.

5. The sitting tool according to any one of claims 1 to 4, characterized in that The invention comprises a backrest (7) and two armrests made of support members, wherein the two armrests are respectively arranged on both sides of the backrest (7), and the backrest (7) and the two armrests and the seat frame (3) enclose an open seating space (9).

6. The seat according to claim 5, characterized in that Connecting members (8) are respectively provided on both sides of the backrest (7) and one side of the armrest, and the connecting members (8) on both sides of the backrest (7) are respectively connected to the connecting members (8) on one side of the adjacent armrest, so that the backrest (7) and the two armrests respectively form the set curved surface shape and are connected to each other as a whole.

7. The sitting device according to claim 6, characterized in that: At least one side of the backrest (7) and / or the armrest is provided with a recess (22), the connecting member (8) is provided in the recess (22), and after the backrest (7) and the two armrests are connected as one, the connecting member (8) is not higher than the supporting surface (11) of the backrest (7) and the armrests.

8. The sitting device according to claim 7, characterized in that: The seat frame (3) is provided with a plurality of fixing holes for connecting the backrest (7) and the armrests, and the bottom and / or top of the seat frame (3) are provided with openings that are in communication with the plurality of fixing holes, and a plurality of fasteners are installed from the opening positions and connected to the fixing holes to fix the backrest (7) and the armrests to the seat frame (3) respectively.

9. The sitting device according to claim 5, characterized in that: The seat frame (3) is provided with a contact surface for contacting the ground, and the side of the seat frame (3) opposite to the contact surface is a pressure-bearing surface for supporting the passenger, and the orthographic projection of the portion of the pressure-bearing surface located at the opening of the riding space (9) on the contact surface does not coincide with the contact surface; and the contours of the portions of the two armrests located within the riding space (9) are hyperbolic surfaces.

10. A method for assembling and disassembling a seat, applicable to the seat according to claim 8, characterized in that: It includes an assembly method and a disassembly method, wherein: The assembly method comprises the following steps: Installing the handrail, bringing the support surface (11) of the handrail into contact with the seat frame (3), and installing fasteners from the opening position to fix the seat frame (3) to the handrail; The backrest (7) is installed by bringing the support surface (11) of the backrest (7) into contact with the seat frame (3), and fasteners are installed from the opening position to fix the seat frame (3) and the backrest (7); Connecting, connecting the connecting piece (8) of the side of the backrest (7) close to the seat frame (3) and the connecting piece (8) of the side of the armrest adjacent to the backrest (7) close to the seat frame (3) in sequence from bottom to top to the upper plane position of the seat frame (3); the flexible piece (1) of the armrest is bent in the direction of the deformation surface (12) so that the multiple abutting pieces (2) abut against each other to form a set curved surface shape; the flexible piece (1) of the backrest (7) is bent in the direction of the deformation surface (12) so that the multiple abutting pieces (2) abut against each other to form a set curved surface shape; connecting the connecting piece (8) at one end of the backrest (7) away from the seat frame (3) and the connecting piece (8) at one end of the armrest away from the seat frame (3) and connecting them in sequence to the position of the aforementioned connecting piece (8) in the direction of the seat frame (3); The disassembly method comprises the following steps: Splitting, separating the connecting piece (8) at the end of the backrest (7) away from the seat frame (3) and the connecting piece (8) at the end of the armrest away from the seat frame (3) in a direction away from the seat frame (3); Folding, the flexible parts (1) of the armrest and backrest (7) are bent toward the supporting surface (11), the abutting surfaces of the plurality of abutting parts (2) are separated from each other, and the armrest and backrest (7) are stacked on the seat frame (3) or in the seat frame (3) for overall packaging; or all the connecting parts (8) between the armrest and backrest (7) are separated, all the fasteners are removed from the opening, the backrest (7) and the armrest are separated from the seat frame (3), and the armrest and backrest (7) are stacked flat for packaging.

Images