Folding chair

Abstract

The utility model relates to the field of furniture, and discloses a folding chair which comprises a backrest plate, a folding chair body and a folding chair body, the backrest plate comprises a backrest face, limiting blocks are arranged on the two sides of the backrest face, and the limiting blocks extend in the height direction of the backrest plate; the support assembly comprises main support rods, the main support rods are arranged on the two sides of the backrest plate, openings are formed in the ends, facing the backrest plate, of the main support rods, sliding grooves are formed in the inner side faces, facing the backrest plate, of the main support rods, the sliding grooves communicate with the openings, and the sliding grooves extend in the height direction of the backrest plate; the limiting block can penetrate through the opening and then slide in the arrangement direction of the sliding groove, so that the backrest plate and the support assembly are connected. According to the folding chair, the backrest plate and the support assembly are tightly connected, compared with a traditional fixing mode, looseness in the using process can be effectively reduced, the overall stability of the folding chair is improved, through the innovative connecting mode, the stability and durability of the folding chair are improved, and the folding chair is convenient to use. And the user experience and the convenience of product maintenance are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of furniture, in particular to a folding chair. BACKGROUND

[0002] The prior art folding chair has certain defects in design, especially in the connection part of the backrest plate and the support. The connection of this part is often not tight enough, which leads to the loosening of the backrest plate during use, affecting the comfort and safety of the user. In addition, due to the unreasonable design of the connection structure, the assembly process of the folding chair is also quite cumbersome. When assembling, a lot of time and effort is needed to ensure the stable connection of the backrest plate and the support, which not only increases the production cost, but also reduces the user experience. Therefore, improving the connection structure and assembly method of the folding chair has become a problem to be solved in the current furniture industry. SUMMARY

[0003] In view of the above problems of the prior art, the purpose of the present application is to provide a new type of folding chair, which not only improves the stability and durability of the product, but also improves the user experience and the convenience of product maintenance.

[0004] In order to solve the above problems, the present application provides a folding chair, which comprises:

[0005] a backrest plate comprising a backrest surface, two sides of the backrest surface being provided with limiting blocks, the limiting blocks extending along the height direction of the backrest plate;

[0006] a support assembly comprising a main support rod, the main support rod being arranged at the two sides of the backrest plate, the main support rod being provided with an opening at the end facing the backrest plate and a sliding groove facing the inner side of the backrest plate, the sliding groove and the opening being in communication, the sliding groove extending along the height direction of the backrest plate for the limiting blocks to slide along the arrangement direction of the sliding groove after passing through the opening, so as to connect the backrest plate and the support assembly.

[0007] Preferably, along the height direction of the backrest plate, the cross-sectional size of the limiting block and the cross-sectional size of the sliding groove are matched.

[0008] Preferably, an abutting section is arranged on the backrest plate, the abutting section being arranged at one end of the limiting block away from the support assembly.

[0009] Along the height direction of the backrest plate, the cross-sectional size of the abutting section is greater than the cross-sectional size of the main support rod, so as to limit the movement distance of the backrest plate relative to the support assembly.

[0010] Preferably, the limiting block comprises a protrusion and a sliding segment, one side of the sliding segment is the backrest plate, the other side of the sliding segment is the protrusion, the protrusion is arranged on the side of the sliding segment close to the abutting segment, and the sliding segment and the protrusion are integrally formed.

[0011] The length of the protrusion is less than the length of the sliding segment along the height direction of the backrest plate, and the protrusion is used for clamping the main support rod.

[0012] Preferably, the cross-sectional shape of the protrusion is a C-shaped structure along the height direction of the backrest plate.

[0013] Preferably, the folding chair further comprises a seat plate, and the two sides of the seat plate are provided with the support assembly.

[0014] The support assembly further comprises a secondary support rod, the secondary support rod is arranged close to and above the seat plate, and is rotationally connected with the main support rod, a rotating ring is arranged at the connection position of the main support rod and the secondary support rod, and the two ends of the rotating ring are respectively hingedly connected with the main support rod and the secondary support rod.

[0015] Preferably, the two sides of the seat plate are provided with reinforcing members, and the support assembly is connected with the seat plate through the reinforcing members to increase the stress intensity of the seat plate.

[0016] Preferably, the reinforcing members are C-shaped bending structures along the height direction of the backrest plate, the seat plate is provided with grooves corresponding to the positions of the reinforcing members, and the end portions of the reinforcing members can be embedded into the grooves to enhance the structural strength of the seat plate.

[0017] Preferably, the outer wall surface of the main support rod is provided with a mounting hole for the connecting member to pass through and abut against the limiting block.

[0018] Preferably, the main support rod is a hollow tubular structure, the inner side wall surface of the main support rod close to the backrest plate is provided with a notch, and the notch and the tubular structure form the sliding groove.

[0019] Based on the above technical scheme, the folding chair has the following beneficial effects:

[0020] By designing the limiting block of the backrest plate to extend along the height direction and enabling it to slide along the sliding groove after passing through the opening of the main support rod of the support assembly, a close connection between the backrest plate and the support assembly can be achieved. Compared with the traditional fixed mode, this connection mode can effectively reduce loosening during use and improve the overall stability of the folding chair. Moreover, the design of the sliding groove allows the limiting block to be easily inserted into the sliding groove and slide along it until it reaches the predetermined position, thereby simplifying the assembly steps of the folding chair. This design reduces the assembly difficulty and reduces the time and labor cost required for assembly. Furthermore, since the limiting block can slide along the sliding groove, users can adjust the position of the backrest plate 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 plate can be easily disassembled and reassembled. In summary, the design of this folding chair improves the stability and durability of the product through innovative connection methods, and also enhances user experience and the convenience of product maintenance. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0022] Figure 1 is a perspective view of the folding chair provided by the embodiments of the present application.

[0023] Figure 2 is an exploded view of the folding chair provided by the embodiments of the present application.

[0024] Figure 3 is a partial enlarged view of X in Figure 7

[0025] Figure 4 is a front view of the folding chair provided by the embodiments of the present application.

[0026] Figure 5 is a rear view of the folding chair provided by the embodiments of the present application.

[0027] Figure 6 is a top view of the folding chair provided by the embodiments of the present application.

[0028] Figure 7 is a left view of the folding chair provided by the embodiments of the present application.

[0029] Figure 8 is a sectional view of A-A in Figure 7

[0030] ​​Figure 9 is Figure 8 a local enlarged view of Y in

[0031] Figure 10 is Figure 7 a sectional view of B-B in

[0032] Figure 11 is Figure 10 a local enlarged view of Z in

[0033] Wherein, the reference signs are as follows: folding chair 100; backrest plate 11, backrest surface 111, limiting block 112, protrusion 1121, sliding section 1122, abutting section 113; support assembly 12, main support rod 121, opening 1211, sliding groove 1212, mounting hole 1213, auxiliary support rod 122, rotating ring 123, connecting piece 124; seat plate 13, reinforcing piece 131, groove 132; height direction H of backrest plate. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0035] The "one embodiment" or "an embodiment" referred to herein means that a specific feature, structure, or characteristic described in the embodiments can be included in at least one implementation of the present application. In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the purpose of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can be explicitly or implicitly included one or more features. Moreover, the terms "first", "second", and the like are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0036] As Figures 1-11 shown, the present application discloses a folding chair 100, which comprises:

[0037] Backrest panel 11, which includes backrest back 111, and limiting blocks 112 are provided on both sides of the backrest back 111, the limiting blocks 112 extending along the height direction H of the backrest panel 11.

[0038] The support assembly 12 includes a main support rod 121, which is disposed on both sides of the backrest plate 11. The main support rod 121 has an opening 1211 at the end facing the backrest plate 11 and a sliding groove 1212 on the inner side facing the backrest plate 11. The sliding groove 1212 is connected to the opening 1211 and extends along the height direction H of the backrest plate 11 to allow the limiting block 112 to slide along the setting direction of the sliding groove 1212 after passing through the opening 1211, thereby realizing the connection between the backrest plate 11 and the main support rod 121.

[0039] It is understood that there are two main support rods 121, and both main support rods 121 are set on the left and right sides of the backrest plate 11. Each main support rod 121 has an opening 1211 and a sliding groove 1212. The backrest plate 11 passes through the opening 1211 of the main support rod 121 through the limiting blocks 112 on its left and right sides, and can slide in the sliding groove 1212. This design allows the backrest plate 11 and the main support rod 121 to move relative to each other, but when fixed, it can be fixed in the position of the limiting blocks 112 in the sliding groove 1212 to achieve a stable connection.

[0040] Therefore, based on the above structural 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 main support rod 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 the traditional fixing method, this connection method can effectively reduce loosening during use and improve the overall stability of the folding chair 100. Furthermore, the design of the sliding groove 1212 allows the limiting block 112 to be easily inserted into the sliding groove 1212 and slide along it until it reaches the predetermined position, thereby simplifying the assembly steps of the folding chair 100. This design reduces the 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.

[0041] In this embodiment, the main support rod 121 is a hollow tubular structure. The main support rod 121 has a notch on the inner wall facing the backrest plate 11. The notch and the tubular structure form the sliding groove 1212.

[0042] Therefore, the hollow tubular structure is lighter than a solid structure, making the folding chair 100 easier to carry and move. Furthermore, tubular structures typically have high compressive and bending strength, maintaining sufficient support even with a lighter weight. The hollow design also increases the moment of inertia of the support rods, thereby improving their bending resistance and making the folding chair 100 more stable during use. Additionally, the notch design creates a sliding groove 1212 on the inner side of the tubular structure, providing a path for the sliding of the limiting block 112 and enabling the connection between the backrest panel 11 and the support assembly 12.

[0043] Preferably, the cross-sectional dimensions of the limiting block 112 and the cross-sectional dimensions of the sliding groove 1212 are adapted along the height direction H of the backrest plate 11.

[0044] This design offers at least the following advantages: it ensures a very tight fit between the limiting block 112 and the sliding groove 1212, thereby improving the accuracy and stability of the connection and reducing wobbling or gaps caused by size mismatch; the matching cross-sectional dimensions ensure that the limiting block 112 is firmly fixed within 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; since the dimensions of the limiting block 112 and the sliding groove 1212 match, wear caused by relative movement between the two can be reduced, extending the service life of the folding chair 100; 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; in mass production, the matching dimensions ensure the consistency of each component, reduce errors in the production process, and improve the overall quality of the product.

[0045] like Figures 1-6 As shown, the backrest panel 11 is provided with an abutment section 113, which is located at the end of the limiting block 112 away from the bracket assembly 12;

[0046] Along the height direction H of the backrest panel 11, the cross-sectional dimension of the abutment section 113 is larger than the cross-sectional dimension of the main support rod 121, so as to limit the movement distance of the backrest panel 11 relative to the support assembly 12, that is, to limit the position of the backrest panel 11.

[0047] In this embodiment of the application, the abutment section 113 is a ring-shaped wrapping structure, which is disposed at the top of the backrest plate 11 and extends to the end of the limiting block 112.

[0048] Therefore, based on the above structural form, the function of the abutment section 113 is to limit the movement distance of the backrest panel 11 relative to the support assembly 12. Since the cross-sectional dimension of the abutment section 113 is larger than that of the main support rod 121, when the backrest panel 11 slides along the main support rod 121, the abutment section 113 will eventually contact the top of the support assembly 12, thereby preventing the backrest panel 11 from moving further, ensuring the correct position of the backrest panel 11 during the assembly process, preventing the backrest panel 11 from being over-folded during the folding process, and avoiding damage or deformation caused by over-folding.

[0049] Preferably, the limiting block 112 includes a protrusion 1121 and a sliding section 1122. One side of the sliding section 1122 is a backrest plate 11, and the other side is a protrusion 1121. The protrusion 1121 is disposed on the side of the sliding section 1122 near the abutment section 113. The sliding section 1122 and the protrusion 1121 are integrally formed.

[0050] Along the height direction H of the backrest panel 11, the length of the protrusion 1121 is less than the length of the sliding section 1122, and the protrusion 1121 is used to engage with the main support rod 121.

[0051] Understandably, the protrusion 1121, used to engage with the main support rod 121, provides additional friction, making the connection between the backrest panel 11 and the support assembly 12 more secure, reducing relative slippage during use. It also acts as a guide during assembly, helping the limiting block 112 to correctly insert into the sliding groove 1212, preventing misoperation. Furthermore, the one-piece molded structure eliminates the need for additional assembly 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. Additionally, the protrusion 1121 is shorter than the sliding section 1122, reducing material usage and lowering costs without sacrificing functionality.

[0052] like Figure 9 As shown, along the height direction H of the backrest panel 11, the cross-sectional shape of the protrusion 1121 is a C-shaped structure.

[0053] This design offers at least the following advantages: the C-shaped structure better matches the shape of the main support rod 121, providing a more stable locking effect, reducing relative slippage, and improving the reliability of the connection; the C-shaped cross-section typically has high structural strength, capable of withstanding greater forces without easily deforming, thereby improving the overall durability of the folding chair 100; the C-shaped structure increases its area with the main support rod 121, better distributing pressure from the backrest panel 11, reducing concentrated loads on a single part of the support assembly 12, and extending the service life of the support assembly 12; the C-shaped structure also absorbs and disperses impact forces to a certain extent, providing a certain shock absorption effect and improving comfort during use.

[0054] like Figures 1-6 As shown, the folding chair 100 also includes a seat 13, with the support assemblies 12 provided on both sides of the seat 13, and the seat 13 is located below the backrest 11.

[0055] The support assembly 12 also includes a secondary support rod 122, which is located near the seat plate 13 and above the seat plate 13, and is rotatably connected to the main support rod 121. A rotating ring 123 is provided at the connection between the main support rod 121 and the secondary support rod 122, and the two ends of the rotating ring 123 are respectively hinged to the main support rod 121 and the secondary support rod 122.

[0056] Understandably, the addition of the secondary support rod 122 increases the support points for the seat 13, and together with the main support rod 121, improves the stability and load-bearing capacity of the entire folding chair 100.

[0057] Furthermore, the design of the rotating ring 123 allows for a certain rotation angle between the main support rod 121 and the secondary support rod 122, enabling the main support rod 121 and the secondary support rod 122 to rotate relative to each other when the folding chair 100 is folded and unfolded, thereby realizing the folding function of the folding chair 100, 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. Moreover, the design of the rotating ring 123 can also prevent the support assembly 12 from accidentally falling off, improving the safety of the folding chair 100.

[0058] Therefore, when the folding chair 100 is in the storage state, the secondary support rod 122 can fit against the main support rod 121; when the folding chair 100 is in use, the secondary support rod 122 and the main support rod 121 provide relative support, playing a role in connection and stability.

[0059] like Figure 2 and Figures 10-11 As shown, reinforcing members 131 are provided on both sides of the seat plate 13, and the bracket assembly 12 is connected to the seat plate 13 through the reinforcing members 131 to increase the stress strength of the seat plate 13.

[0060] Specifically, when a user sits on the folding chair 100, the reinforcing member 131 between the seat 13 and the support assembly 12 will bear all the shear force provided by the user. Therefore, the reinforcing member 131 enhances the connection strength between the seat 13 and the support assembly 12, allowing the seat 13 to better distribute and withstand the shear force when bearing the user's weight, thereby improving the load-bearing capacity of the folding chair 100. Furthermore, by bearing and distributing the shear force, it also helps reduce wear on the seat 13 and the support assembly 12, thus extending the service life of the folding chair 100. Moreover, when a user sits on the folding chair 100, the reinforcing member 131 helps prevent the seat 13 from bending or deforming under pressure, thus maintaining the flatness and stability of the seat 13. The reinforcing member 131 also reduces the horizontal movement of the seat 13, 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 13.

[0061] In the embodiments of this application, such as Figure 11 As shown, along the height direction H of the backrest 11, the reinforcing member 131 has a C-shaped bent structure, and the seat plate 13 has a groove 132 at the position corresponding to the reinforcing member 131. The end of the reinforcing member 131 can be embedded in the groove 132 to enhance the structural strength of the seat plate 13.

[0062] Specifically, the reinforcing member 131 is provided on the middle side and bottom of the seat plate 13. The middle part of the seat plate 13 is provided with a horizontal groove 132, and the bottom of the seat plate 13 is provided with a vertical groove 132, so that the two bent ends of the reinforcing member 131 can be respectively embedded in the two grooves 132 to enhance the connection strength between the reinforcing member 131 and the seat plate 13.

[0063] Therefore, based on the above structural form, the C-shaped bending reinforcement 131 forms a tight fixed connection by embedding grooves 132 at both ends, greatly enhancing the connection strength between the reinforcement 131 and the seat 13, making the seat 13 more stable when bearing weight. Placing the reinforcement 131 in the middle and bottom of the seat 13 helps to evenly distribute the pressure and shear force generated by the user's weight, improving the overall structural stability of the folding chair 100; furthermore, the C-shaped structure can effectively resist the bending and deformation of the seat 13 under pressure, maintaining the flatness of the seat 13.

[0064] like Figures 1-2 As shown, the outer wall of the main support rod 121 is also provided with mounting holes 1213, which are used for the connector 124 to pass through and abut against the limiting block 112 to strengthen the connection strength between the backrest plate 11 and the support assembly 12.

[0065] In this embodiment, the connector 124 is a screw.

[0066] By providing mounting holes 1213 on the main support rod 121 and connecting the limiting block 112 to the main support rod 121 using a connector 124, the connection strength between the backrest panel 11 and the support assembly 12 can be effectively enhanced, making the folding chair 100 more stable when bearing weight. This prevents the limiting block 112 from accidentally falling off in the sliding groove 1212 due to external forces, thereby improving the stability of the folding chair 100. Furthermore, the cooperation between the connector 124, the limiting block 112, and the mounting holes 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 connector 124 more convenient.

[0067] The foregoing description has fully disclosed the specific embodiments of this application. It should be noted that any modifications made by those skilled in the art to the specific embodiments of this application do not depart from the scope of the claims. Accordingly, the scope of the claims of this application is not limited to the foregoing specific embodiments.

Claims

1. A folding chair, characterized in that, It includes: The back plate (11) includes a back face (111), and both sides of the back face (111) are provided with limiting blocks (112) extending along the height direction of the back plate (11); The support assembly (12) includes a main support rod (121) arranged on both sides of the back plate (11), and the main support rod (121) is provided with an opening (1211) at the end of the back plate (11) and a sliding groove (1212) at the inner side of the back plate (11), the sliding groove (1212) and the opening (1211) are communicated, and the sliding groove (1212) extends along the height direction of the back plate (11) to enable the limiting block (112) to slide along the arrangement direction of the sliding groove (1212) after being arranged through the opening (1211), so as to connect the back plate (11) and the support assembly (12).

2. The folding chair of claim 1, wherein, Along the height direction of the back plate (11), the cross-sectional size of the limiting block (112) is matched with the cross-sectional size of the sliding groove (1212).

3. The folding chair of claim 1, wherein, The back plate (11) is provided with an abutting section (113) arranged at one end of the limiting block (112) away from the support assembly (12); Along the height direction of the back plate (11), the cross-sectional size of the abutting section (113) is greater than the cross-sectional size of the main support rod (121), so as to limit the movement distance of the back plate (11) relative to the support assembly (12).

4. The folding chair of claim 3, wherein, The limiting block (112) includes a protrusion (1121) and a sliding section (1122), one side of the sliding section (1122) is the back plate (11), the other side of the sliding section (1122) is the protrusion (1121), the protrusion (1121) is arranged on one side of the sliding section (1122) close to the abutting section (113), and the sliding section (1122) and the protrusion (1121) are an integral structure; Along the height direction of the back plate (11), the length of the protrusion (1121) is less than the length of the sliding section (1122), and the protrusion (1121) is used for clamping connection with the main support rod (121).

5. The folding chair of claim 4, wherein, Along the height direction of the back plate (11), the cross-sectional shape of the protrusion (1121) is a C-shaped structure.

6. The folding chair of claim 1, wherein, The folding chair further includes a seat plate (13), and both sides of the seat plate (13) are provided with the support assembly (12); The support assembly (12) further includes a secondary support rod (122) arranged close to and above the seat plate (13) and rotationally connected with the main support rod (121), and a rotating ring (123) is arranged at the connection position of the main support rod (121) and the secondary support rod (122), and both ends of the rotating ring (123) are hingedly connected with the main support rod (121) and the secondary support rod (122).

7. The folding chair of claim 6, wherein, The two sides of the seat plate (13) are provided with reinforcing pieces (131), the support assembly (12) is connected with the seat plate (13) through the reinforcing pieces (131), so as to increase the stress intensity of the seat plate (13).

8. The folding chair of claim 7, wherein, Along the height direction of the backrest plate (11), the reinforcing pieces (131) are C-shaped bending structures, the seat plate (13) is provided with grooves (132) corresponding to the positions of the reinforcing pieces (131), and the end portions of the reinforcing pieces (131) can be embedded into the grooves (132) to enhance the structural strength of the seat plate (13).

9. The folding chair of claim 1, wherein, The outer wall surface of the main support rod (121) is provided with a mounting hole (1213) for the connection piece (124) to pass through and abut against the limiting block (112).

10. The folding chair of claim 1, wherein, The main support rod (121) is a tubular structure with an inner cavity, the inner side wall surface of the main support rod (121) towards the backrest plate (11) is provided with a notch, and the notch and the tubular structure form the sliding groove (1212).

Images