A folding chair frame and a folding chair
By designing a linked structure for the backrest cross component and support leg component of the folding chair frame, the problems of cumbersome operation and large size of existing folding chairs are solved, realizing simple unfolding and folding operations and small-volume folding, thus improving the user experience.
Patent Information
- Application Number
- CN202522141883.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-10
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-10-10
AI Technical Summary
Existing folding chairs have cumbersome unfolding and folding procedures, making them inconvenient to use. Furthermore, their large size when folded makes them difficult to carry and store, thus affecting the user experience.
Design a folding chair frame that achieves overall coordinated unfolding and folding by setting up a backrest cross component and a support leg component. The frame adopts a hinge and flip-up structure to simplify the operation steps and reduces the volume by driving the linkage structure through the backrest cross component.
The folding chair is easy to unfold and fold, and its compact size when folded improves the user experience.
Smart Images
Figure CN224671128U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of seating technology, and more specifically, to a folding chair frame and a folding chair. Background Technology
[0002] Folding chairs, as a type of seating furniture characterized by their portability and foldability for storage, can be mainly divided into two categories based on their structural form: surface folding chairs and bundled folding chairs.
[0003] However, existing folding chairs generally suffer from cumbersome unfolding and folding operations, making them inconvenient to use. Furthermore, their large overall size when folded makes them difficult to carry and store, thus affecting the product's practicality and user experience. Utility Model Content
[0004] The purpose of this utility model is to provide a folding chair frame and a folding chair, which has simple unfolding and folding operation steps, is easy to use, and has a small volume after folding, thereby improving the user experience.
[0005] The embodiments of this utility model are implemented as follows: In a first aspect, this utility model provides a folding chair frame, comprising: A first backrest tube and a second backrest tube are provided at intervals; A first support leg assembly and a second support leg assembly, the first support leg assembly and the second support leg assembly being spaced apart, the first support leg assembly being hinged to the first backrest tube, and the second support leg assembly being hinged to the second backrest tube; and A backrest cross assembly, wherein one side of the backrest cross assembly has a first upper end and a first lower end, the first upper end and the first lower end being hinged to the first backrest tube and the first support leg assembly respectively; the opposite side of the backrest cross assembly has a second upper end and a second lower end, the second upper end and the second lower end being hinged to the second backrest tube and the second support leg assembly respectively.
[0006] In an optional embodiment, the backrest cross assembly includes a first backrest cross tube and a second backrest cross tube that are hinged to each other and cross each other, as well as a third backrest cross tube and a fourth backrest cross tube that are hinged to each other and cross each other; the first backrest cross tube has a first upper end, and the end of the first backrest cross tube away from the first upper end is hinged to the third backrest cross tube; the second backrest cross tube has a first lower end, and the end of the second backrest cross tube away from the first lower end is hinged to the fourth backrest cross tube; The third backrest cross tube has a second upper end at the end away from the first backrest cross tube, and the fourth backrest cross tube has a second lower end at the end away from the second backrest cross tube.
[0007] In an optional embodiment, the first support leg assembly includes a first rear leg tube, a first front leg tube, and a first seat tube. The first rear leg tube and the first front leg tube are both hinged to the first seat tube. One end of the first seat tube is hinged to the first lower end, and the end of the first backrest tube away from the first upper end is hinged to the first seat tube.
[0008] In an optional embodiment, the first support leg assembly further includes a first flip member and a second flip member, one end of the first flip member being hinged to the first rear leg tube, and the other end of the first flip member being hinged to the second flip member; the end of the second flip member that is hinged to the first flip member is hinged to the first backrest tube, and the end of the second flip member that is away from the first backrest tube is fixedly connected to the first seat tube.
[0009] In an optional embodiment, the folding chair frame further includes a first armrest, which is hinged to the first rear leg tube, the first front leg tube, and the first backrest tube.
[0010] In an optional embodiment, the second support leg assembly includes a second rear leg tube, a second front leg tube, and a second seat tube. The second rear leg tube and the second front leg tube are both hinged to the second seat tube. One end of the second seat tube is hinged to the second lower end, and the end of the second backrest tube away from the second upper end is hinged to the second seat tube.
[0011] In an optional embodiment, the second support leg assembly further includes a third flip member and a fourth flip member, one end of the third flip member being hinged to the second rear leg tube, and the other end of the third flip member being hinged to the fourth flip member; the end of the fourth flip member that is hinged to the third flip member is hinged to the second backrest tube, and the end of the fourth flip member that is away from the second backrest tube is fixedly connected to the second seat tube.
[0012] In an optional embodiment, the folding chair frame further includes a second armrest, which is hinged to the second rear leg tube, the second front leg tube, and the second backrest tube.
[0013] In an optional embodiment, the folding chair frame further includes a first front cross tube and a second front cross tube that are hinged to each other and arranged in a cross manner. The two ends of the first front cross tube are respectively hinged to the first support leg assembly and the second support leg assembly, and the two ends of the second front cross tube are respectively hinged to the first support leg assembly and the second support leg assembly.
[0014] Secondly, this utility model provides a folding chair, including the folding chair frame described in any of the foregoing embodiments.
[0015] The beneficial effects of this utility model embodiment include: The folding chair frame, by incorporating a backrest cross assembly, links the first backrest tube, the second backrest tube, the first support leg assembly, and the second support leg assembly, enabling the entire frame to unfold and fold together in unison. Specifically, by hinged the first upper and lower ends to the first backrest tube and the first support leg assembly respectively, and also hinged the first backrest tube to the first support leg assembly, a linkage structure is formed on one side of the folding chair frame. Similarly, by hinged the second upper and lower ends to the second backrest tube and the second support leg assembly respectively, and also hinged the second support leg assembly to the second backrest tube, a linkage structure is formed on the other side of the folding chair frame. Furthermore, the backrest cross assembly itself has an unfolding / folding feature, further activating the two linkage structures. Thus, when folding, the user can hold the first backrest tube and the first support leg assembly, or the second backrest tube and the second support leg assembly, respectively, bringing them closer together and flipping them over, reducing the front-to-back volume of the folding chair frame. Simultaneously, during the folding process, the backrest cross assembly also moves the two linked structures closer together, further reducing the left-to-right volume of the folding chair frame. Conversely, when unfolding, the user can hold the first backrest tube and the first support leg assembly, or the second backrest tube and the second support leg assembly, moving them away from each other. In other words, this folding chair frame is simple to unfold and fold, convenient to use, and has a small folded size, improving the user experience.
[0016] A folding chair includes a folding chair frame, which has all the beneficial effects of that folding chair frame. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 A first-view schematic diagram of the folding chair frame in the unfolded state provided in an embodiment of this utility model; Figure 2 A second-view schematic diagram of the folding chair frame in its unfolded state, provided in an embodiment of this utility model; Figure 3A schematic diagram showing the folding chair frame in a semi-folded state according to an embodiment of this utility model; Figure 4 A schematic diagram of the folding chair frame provided in an embodiment of this utility model in its fully folded state; Figure 5 for Figure 2 A magnified view of a section at point C; Figure 6 for Figure 2 A magnified view of a section at point D.
[0019] Icons: 100 - Folding chair frame; 10 - First backrest tube; 20 - Second backrest tube; 30 - First support leg assembly; 31 - First rear leg tube; 32 - First front leg tube; 33 - First seat tube; 34 - First flip-up component; 35 - Second flip-up component; 40 - Second support leg assembly; 41 - Second rear leg tube; 42 - Second front leg tube; 43 - Second seat tube; 44 - Third flip-up component; 45 - Fourth flip-up component; 50 - Backrest cross assembly; 51 - First backrest cross tube; 511 - First upper end; 52 - Second backrest cross tube; 521 - First lower end; 53 - Third backrest cross tube; 531 - Second upper end; 54 - Fourth backrest cross tube; 541 - Second lower end; 61 - First armrest; 62 - Second armrest; 71 - First front cross tube; 72 - Second front cross tube. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0024] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] As described in the background section, existing folding chairs generally suffer from cumbersome unfolding and folding operations, making them inconvenient to use. Furthermore, their overall size is large when folded, which is not conducive to carrying and storage, thus affecting the product's practicality and user experience.
[0027] Based on this, please refer to Figures 1-6 The present invention provides a folding chair frame 100 and a folding chair, which effectively improves the aforementioned technical problems. Specifically, its unfolding and folding operations are simple, it is easy to use, and its folded size is small, thus enhancing the user experience. The folding chair frame 100 and the folding chair will be described in detail below.
[0028] This embodiment provides a folding chair (not shown in the figure). The folding chair includes a folding chair frame 100 and a chair cover. The chair cover is disposed on the folding chair frame 100 so that the user's buttocks or back are supported when using the folding chair.
[0029] Please refer to Figures 1-4 , Figure 1This is a first-view schematic diagram of the folding chair frame 100 provided in this embodiment in its unfolded state. Figure 2 This is a second-view schematic diagram of the folding chair frame 100 provided in this embodiment in its unfolded state. Figure 3 This is a schematic diagram showing the folding chair frame 100 provided in this embodiment in a semi-folded state. Figure 4 This is a schematic diagram of the folding chair frame 100 provided in this embodiment in its fully folded state.
[0030] Combination Figures 1-4 The folding chair frame 100 includes a first backrest tube 10, a second backrest tube 20, a first support leg assembly 30, a second support leg assembly 40, and a backrest cross assembly 50. The first backrest tube 10 and the second backrest tube 20 are spaced apart; the first support leg assembly 30 and the second support leg assembly 40 are spaced apart, and the first support leg assembly 30 is hinged to the first backrest tube 10, and the second support leg assembly 40 is hinged to the second backrest tube 20; one side of the backrest cross assembly 50 has a first upper end 511 and a first lower end 521, which are respectively hinged to the first backrest tube 10 and the first support leg assembly 30; the opposite side of the backrest cross assembly 50 has a second upper end 531 and a second lower end 541, which are respectively hinged to the second backrest tube 20 and the second support leg assembly 40.
[0031] It is easy to understand that by setting the backrest cross assembly 50, the first backrest tube 10, the second backrest tube 20, the first support leg assembly 30, and the second support leg assembly 40 can be linked together to complete the unfolding and folding operations as a whole. Specifically, by hinged the first upper end 511 and the first lower end 521 to the first backrest tube 10 and the first support leg assembly 30 respectively, and the hinge of the first backrest tube 10 to the first support leg assembly 30 is also hinged, a linkage structure can be formed on one side of the folding chair frame 100; similarly, by hinged the second upper end 531 and the second lower end 541 to the second backrest tube 20 and the second support leg assembly 40 respectively, and the second support leg assembly 40 to the second backrest tube 20 is also hinged, a linkage structure can also be formed on the other side of the folding chair frame 100; and the backrest cross assembly 50 itself also has the characteristic of unfolding, which can further drive the two linkage structures.
[0032] Therefore, please combine Figure 3When the folding chair frame 100 needs to be folded, the user can hold the first backrest tube 10 and the first support leg assembly 30 with both hands, or hold the second backrest tube 20 and the second support leg assembly 40 respectively, causing them to move closer together and flip over, thus reducing the front-to-back volume of the folding chair frame 100. Due to the driving action of the backrest cross assembly 50, when one linkage structure folds, the other linkage structure will also fold along with it. Furthermore, the two linkage structures can also move closer together under the driving action of the backrest cross assembly 50, reducing the left-to-right volume of the folding chair frame 100. This achieves a reduction in volume in all four directions (front, back, left, and right) of the folding chair frame 100, ultimately folding it up to its desired size. Figure 4 The state shown is as follows. Of course, when unfolding is required, the user can hold the first backrest tube 10 and the first support leg assembly 30 with both hands, or hold the second backrest tube 20 and the second support leg assembly 40 respectively, causing them to move away from each other. Simultaneously, driven by the backrest cross assembly 50, the two linked structures also move away from each other, ultimately forming the state shown. Figure 1 or Figure 2 The folding chair frame 100 is shown in its unfolded state. In other words, the unfolding and folding operation of this folding chair frame 100 is simple and convenient, enabling one-step unfolding and folding, and its compact size after folding enhances the user experience.
[0033] Combination Figure 1 Specifically, the backrest cross assembly 50 includes a first backrest cross tube 51 and a second backrest cross tube 52 that are hinged to each other and arranged in a cross configuration, as well as a third backrest cross tube 53 and a fourth backrest cross tube 54 that are hinged to each other and arranged in a cross configuration. The first backrest cross tube 51 has a first upper end 511, and the end of the first backrest cross tube 51 away from the first upper end 511 is hinged to the third backrest cross tube 53; the second backrest cross tube 52 has a first lower end 521, and the end of the second backrest cross tube 52 away from the first lower end 521 is hinged to the fourth backrest cross tube 54. The end of the third backrest cross tube 53 away from the first backrest cross tube 51 has a second upper end 531, and the end of the fourth backrest cross tube 54 away from the second backrest cross tube 52 has a second lower end 541.
[0034] like Figure 1 and Figure 2 As shown, the backrest cross assembly 50 can be understood as a double cross structure. One cross structure is connected to the first backrest tube 10 and the first support leg assembly 30 respectively, and the other cross structure is connected to the second backrest tube 20 and the second support leg assembly 40 respectively. At the same time, the connection part of the two cross structures forms a parallelogram structure, thereby improving the overall structural stability of the folding chair frame 100 when unfolded; and shortening the length of the backrest cross tube when folded, thereby further reducing the overall folded volume and saving packaging costs.
[0035] It should be noted that, because the backrest cross assembly 50 has a double cross structure and a parallelogram design in the middle, the spacing between the four hinge points of the parallelogram will change during the unfolding and retraction process. That is, the four sides of the parallelogram may shift relative to each other by a certain distance. Therefore, to ensure that the cross shape of the backrest cross assembly 50 does not change and to improve stability during unfolding and retraction, sliding members can be provided at the connection points between the first backrest cross tube 51, the second backrest cross tube 52, the third backrest cross tube 53, and the fourth backrest cross tube 54. This allows the sliding members to adapt the positions of the cross tubes during unfolding and retraction.
[0036] Please continue to combine Figure 1 The first support leg assembly 30 includes a first rear leg tube 31, a first front leg tube 32 and a first seat tube 33. The first rear leg tube 31 and the first front leg tube 32 are both hinged to the first seat tube 33. One end of the first seat tube 33 is hinged to the first lower end 521. The end of the first backrest tube 10 away from the first upper end 511 is hinged to the first seat tube 33.
[0037] Similarly, the second support leg assembly 40 includes a second rear leg tube 41, a second front leg tube 42, and a second seat tube 43. The second rear leg tube 41 and the second front leg tube 42 are both hinged to the second seat tube 43. One end of the second seat tube 43 is hinged to the second lower end 541, and the end of the second backrest tube 20 away from the second upper end 531 is hinged to the second seat tube 43.
[0038] In other words, in this embodiment, the first seat tube 33 is hinged to the second backrest cross tube 52, and the second seat tube 43 is hinged to the fourth backrest cross tube 54. Thus, please refer to... Figure 2 When the folding chair frame 100 is folded up, the user can hold it with both hands. Figure 2 The structures shown in the two dashed boxes are: holding the end of the first backrest tube 10 near the first backrest cross tube 51 and the end of the first seat tube 33 away from the second backrest cross tube 52, respectively, and then folding them closer together along directions A and B. At this time, the first upper end 511 and the first lower end 521 move away from each other, and the first backrest cross tube 51 and the second backrest cross tube 52 can drive the third backrest cross tube 53 and the fourth backrest cross tube 54 to rotate, so that the second seat tube 43 and the second backrest tube 20 also move closer together and fold along directions A and B, respectively, so that the volume of the folding chair frame 100 in the front-to-back direction decreases; at the same time, the first upper end 511 and the second upper end 531, and the first lower end 521 and the second lower end 541 move closer together, so that the volume of the folding chair frame 100 in the left-to-right direction also decreases synchronously, and finally the folding operation is completed.
[0039] Of course, users can also operate the end of the second backrest tube 20 that is close to the third backrest cross tube 53, and the end of the second seat tube 43 that is far away from the fourth backrest cross tube 54, to achieve a one-step folding and unfolding operation.
[0040] Please refer to Figure 5 , Figure 5 for Figure 2 A magnified view of a section at point C, combined with... Figure 2 and Figure 5 To improve stability and smoothness during folding and unfolding, and to further facilitate user operation and use, in this embodiment, the first support leg assembly 30 further includes a first flipping member 34 and a second flipping member 35. One end of the first flipping member 34 is hinged to the first rear leg tube 31, and the other end of the first flipping member 34 is hinged to the second flipping member 35. The end of the second flipping member 35 that is hinged to the first flipping member 34 is hinged to the first backrest tube 10, and the end of the second flipping member 35 that is away from the first backrest tube 10 is fixedly connected to the first seat tube 33.
[0041] Please refer to Figure 6 , Figure 6 for Figure 2 A magnified view of a section at point D, combined with... Figure 2 and Figure 6 Similarly, to improve the user experience, the second support foot assembly 40 also includes a third flip member 44 and a fourth flip member 45. One end of the third flip member 44 is hinged to the second rear foot tube 41, and the other end of the third flip member 44 is hinged to the fourth flip member 45. The end of the fourth flip member 45 that is hinged to the third flip member 44 is hinged to the second backrest tube 20, and the end of the fourth flip member 45 that is away from the second backrest tube 20 is fixedly connected to the second seat tube 43.
[0042] Optionally, the folding chair frame 100 also includes a first armrest 61, which is hinged to the first rear leg tube 31, the first front leg tube 32, and the first backrest tube 10. Similarly, the folding chair frame 100 also includes a second armrest 62, which is hinged to the second rear leg tube 41, the second front leg tube 42, and the second backrest tube 20.
[0043] It is easy to understand that during the folding and unfolding process, the first armrest 61 and the second armrest 62 will also follow their respective first support leg assembly 30 and second support leg assembly 40 to perform a flipping motion, so as not to affect the overall volume when folded and to make it convenient for users to use when unfolded.
[0044] Please continue to combine Figure 1To improve the linkage effect between the first support leg assembly 30 and the second support leg assembly 40, so that when the first backrest tube 10 and the first support leg assembly 30 are moved closer together or further apart to unfold, the linkage structure on one side can better drive the linkage structure on the other side to perform the unfolding action. In this embodiment, the folding chair frame 100 also includes a first front cross tube 71 and a second front cross tube 72 that are hinged to each other and arranged in a cross configuration. The two ends of the first front cross tube 71 are respectively hinged to the first support leg assembly 30 and the second support leg assembly 40, and the two ends of the second front cross tube 72 are respectively hinged to the first support leg assembly 30 and the second support leg assembly 40.
[0045] Specifically, in this embodiment, the two ends of the first front cross tube 71 are hinged to the first front foot tube 32 and the second seat tube 43, respectively, and the two ends of the second front cross tube 72 are hinged to the second front foot tube 42 and the first seat tube 33, respectively.
[0046] In this way, when the user holds the front end of the first seat tube 33 or the front end of the second seat tube 43, that is, the end of the first seat tube 33 near the second front cross tube 72 or the end of the second seat tube 43 near the first front cross tube 71, the first front cross tube 71 and the second front cross tube 72 can be rotated relative to each other, so that the seat tube and the front leg tube on the other side can also be linked together, further improving the folding and unfolding efficiency.
[0047] Based on the above description, taking the folding process as an example, the folding principle of the folding chair frame 100 provided in this embodiment is as follows: The user holds the front end of the first seat tube 33 and the upper end of the first backrest tube 10 with both hands, respectively, along... Figure 2 The movement in directions A and B, as shown, causes the first seat tube 33 and the first backrest tube 10 to flip and move closer to each other. During this process, the first seat tube 33 will drive the first front leg tube 32 and the first rear leg tube 31 to move closer to each other. As the first front leg tube 32 and the first seat tube 33 rotate relative to each other, they will also drive the first front cross tube 71 and the second front cross tube 72 to rotate relative to each other. Then, the first front cross tube 71 and the second front cross tube 72 will continue to drive the second seat tube 43 and the second front leg tube 42 to rotate relative to each other, thereby realizing the overall folding movement of the front side of the folding chair frame 100. Of course, during this process, the upper end of the first backrest tube 10 and the rear end of the first seat tube 33 will also drive the first backrest cross tube 51 and the second backrest cross tube 52 to move, so that the first upper end 511 and the first lower end 521 move away from each other, and the third backrest cross tube 53 and the fourth backrest cross tube 54 also move along with them through linkage. In this way, as the second upper end 531 and the second lower end 541 also move away from each other, the second backrest tube 20 and the second seat tube 43 are driven to rotate relative to each other and perform a flipping action, thereby realizing the reduction of volume of the folding chair frame 100 in the front and rear directions.
[0048] As is easily understood, during the folding process, the first armrest 61 is simultaneously rotated by the first front leg tube 32, the first rear leg tube 31, and the first backrest tube 10, while the second armrest 62 is simultaneously rotated by the second front leg tube 42, the second rear leg tube 41, and the second backrest tube 20. Due to the action of the backrest cross assembly 50, the first front cross tube 71, and the second front cross tube 72, the first backrest tube 10 and the second backrest tube 20 are simultaneously moved closer together, the first support leg assembly 30 and the second support leg assembly 40 are moved closer together, and the first armrest 61 and the second armrest 62 are moved closer together, thereby reducing the volume of the folding chair frame 100 in the left and right directions.
[0049] It should be noted that when unfolding is required, the user only needs to separate and flip the front end of the first seat tube 33 and the upper end of the first backrest tube 10 away from each other. The principle is the same as the folding method, and will not be described in detail here.
[0050] Therefore, the unfolding and folding operation of the folding chair frame 100 is simple and convenient, and it can be unfolded and folded in one step. Moreover, the folded size is small, thereby improving the user experience.
[0051] The folding chair includes a folding chair frame 100, which has all the functions and benefits of the folding chair frame 100.
[0052] The above description is merely a specific embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A folding chair frame, characterized in that, include: A first backrest tube (10) and a second backrest tube (20) are provided at intervals; A first support leg assembly (30) and a second support leg assembly (40) are provided at intervals, wherein the first support leg assembly (30) is hinged to the first backrest tube (10), and the second support leg assembly (40) is hinged to the second backrest tube (20); and The backrest cross assembly (50) has a first upper end (511) and a first lower end (521) on one side, the first upper end (511) and the first lower end (521) being hinged to the first backrest tube (10) and the first support foot assembly (30) respectively; the opposite side of the backrest cross assembly (50) has a second upper end (531) and a second lower end (541), the second upper end (531) and the second lower end (541) being hinged to the second backrest tube (20) and the second support foot assembly (40) respectively.
2. The folding chair frame according to claim 1, characterized in that, The backrest cross assembly (50) includes a first backrest cross tube (51) and a second backrest cross tube (52) that are hinged to each other and cross each other, as well as a third backrest cross tube (53) and a fourth backrest cross tube (54) that are hinged to each other and cross each other; the first backrest cross tube (51) has a first upper end (511), and the end of the first backrest cross tube (51) away from the first upper end (511) is hinged to the third backrest cross tube (53); the second backrest cross tube (52) has a first lower end (521), and the end of the second backrest cross tube (52) away from the first lower end (521) is hinged to the fourth backrest cross tube (54); The third backrest cross tube (53) has a second upper end (531) at the end away from the first backrest cross tube (51), and the fourth backrest cross tube (54) has a second lower end (541) at the end away from the second backrest cross tube (52).
3. The folding chair frame according to claim 1, characterized in that, The first support leg assembly (30) includes a first rear leg tube (31), a first front leg tube (32) and a first seat tube (33). The first rear leg tube (31) and the first front leg tube (32) are both hinged to the first seat tube (33). One end of the first seat tube (33) is hinged to the first lower end (521). The end of the first backrest tube (10) away from the first upper end (511) is hinged to the first seat tube (33).
4. The folding chair frame according to claim 3, characterized in that, The first support leg assembly (30) further includes a first flip member (34) and a second flip member (35). One end of the first flip member (34) is hinged to the first rear leg tube (31), and the other end of the first flip member (34) is hinged to the second flip member (35). The end of the second flip member (35) that is hinged to the first flip member (34) is hinged to the first backrest tube (10), and the end of the second flip member (35) that is away from the first backrest tube (10) is fixedly connected to the first seat tube (33).
5. The folding chair frame according to claim 3, characterized in that, The folding chair frame (100) also includes a first armrest (61), which is hinged to the first rear leg tube (31), the first front leg tube (32) and the first backrest tube (10).
6. The folding chair frame according to claim 1, characterized in that, The second support leg assembly (40) includes a second rear leg tube (41), a second front leg tube (42), and a second seat tube (43). The second rear leg tube (41) and the second front leg tube (42) are both hinged to the second seat tube (43). One end of the second seat tube (43) is hinged to the second lower end (541), and the end of the second backrest tube (20) away from the second upper end (531) is hinged to the second seat tube (43).
7. The folding chair frame according to claim 6, characterized in that, The second support leg assembly (40) further includes a third flip member (44) and a fourth flip member (45). One end of the third flip member (44) is hinged to the second rear leg tube (41), and the other end of the third flip member (44) is hinged to the fourth flip member (45). The end of the fourth flip member (45) that is hinged to the third flip member (44) is hinged to the second backrest tube (20), and the end of the fourth flip member (45) that is away from the second backrest tube (20) is fixedly connected to the second seat tube (43).
8. The folding chair frame according to claim 6, characterized in that, The folding chair frame (100) also includes a second armrest (62), which is hinged to the second rear leg tube (41), the second front leg tube (42) and the second backrest tube (20).
9. The folding chair frame according to claim 1, characterized in that, The folding chair frame (100) also includes a first front cross tube (71) and a second front cross tube (72) that are hinged to each other and cross each other. The two ends of the first front cross tube (71) are respectively hinged to the first support leg assembly (30) and the second support leg assembly (40), and the two ends of the second front cross tube (72) are respectively hinged to the first support leg assembly (30) and the second support leg assembly (40).
10. A folding chair, characterized in that, Includes the folding chair frame (100) as described in any one of claims 1-9.