Folding framework and folding chair cushion

Abstract

The utility model relates to the field of furniture manufacturing, in particular to a folding framework and a folding chair cushion, which comprise a framework main body and a back rod framework, the framework main body comprises a seat rod framework and an extending part which is fixedly connected to the rear side of the seat rod framework and is bent upwards; the lower end part of the back rod framework is hinged to the upper end of the extension part of the framework main body; a locking assembly is arranged between the back rod framework and the extension part of the framework main body, and the locking assembly is used for controlling the back rod framework to be locked or loosened relative to the extension part; when the back rod framework is locked relative to the extension part, the back rod framework is fixed in the extension direction of the extension part; and when the back rod framework is loosened relative to the extension part, the back rod framework can turn over relative to the hinge point relative to the extension part of the framework main body. The scheme has the advantages of being simple in structure, convenient to operate, stable in locking and high in multifunctionality.

Description

TECHNICAL FIELD

[0001] The utility model relates to furniture manufacturing field especially, relate to a folding framework and folding chair pad. BACKGROUND

[0002] Folding chair pad is widely loved by consumers because of its light, convenient to carry and good comfort characteristics. The internal framework of the existing soft chair usually only includes a seat framework and a back framework, the seat framework and the back framework are hingedly connected, and a large number of filling cores filled on the framework are used to improve the softness and comfort of the soft chair.

[0003] In the prior art, some improvement schemes have been proposed to solve the problems of functionality and comfort of folding soft chairs. For example, the Chinese invention patent with the publication number CN104172776B relates to a simple body folding soft chair, which includes an internal framework, a filling core wrapped outside the framework, and an integrated outer cover wrapped outside the filling core. The backrest and seat of the folding soft chair are hingedly connected through an angle adjuster, the first connecting body of the angle adjuster is fixed at the rear end of the seat and is inclined at an angle β, and the backrest is rotated along the pin shaft a through the second connecting body, and the adjustment angle is within the range less than or equal to the angle β. The angle adjuster used in this scheme is a complex ratchet angle adjuster, which not only increases the cost of the product, but also may affect the durability and maintenance difficulty of the product.

[0004] In addition, the existing folding mechanism often has the problems of unstable locking, complex operation or easy loosening. This not only affects the use experience of the product, but also may cause safety hazards. Especially in the use scene of frequent folding and unfolding, these problems will be more prominent.

[0005] In view of the above problems, the prior art needs to be improved. SUMMARY

[0006] In order to solve the above problems, the utility model aims at providing a folding framework and folding chair pad, which has the advantages of simple structure, convenient operation, stable locking, strong multifunctionality.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0008] This application provides a folding frame, the technical solution of which is as follows: it includes a frame body and a back pole frame; the frame body includes a seat pole frame and an extension fixed to the rear side of the seat pole frame and bent upward; the lower end of the back pole frame is hinged to the upper end of the extension of the frame body; a locking component is provided between the back pole frame and the extension of the frame body, the locking component being used to control the back pole frame to lock or release relative to the extension; when the back pole frame is locked relative to the extension, the back pole frame is fixed in the extending direction of the extension; when the back pole frame is released relative to the extension, the back pole frame can be flipped relative to the extension of the frame body relative to the hinge point.

[0009] Furthermore, this application also proposes that the locking assembly includes a first sleeve fixed to the extension, a second sleeve fixed to the back bar frame, and a pin movably disposed within the first sleeve and / or the second sleeve; the back bar frame

[0010] When the frame flips relative to the extension, the second sleeve rotates relative to the first sleeve; when the second sleeve and the first sleeve are connected and the two ends of the pin are respectively in the second sleeve and the first sleeve, the back rod frame is locked relative to the extension; when the pin is only in the second sleeve or the first sleeve, the back rod frame can flip relative to the extension.

[0011] Furthermore, this application also proposes that the pin is movably disposed within the second sleeve and the first sleeve, and the pin slides within the second sleeve and the first sleeve based on gravity.

[0012] Furthermore, this application also proposes that the length of the pin is greater than the length of the first sleeve, so that when the pin slides into the first sleeve under the action of gravity, the upper end of the pin is in the second sleeve, and the back rod frame is locked relative to the extension; the length of the pin is less than or equal to the length of the second sleeve, so that when the pin slides into the second sleeve under the action of gravity, the pin is completely housed in the second sleeve, and the back rod frame can be flipped relative to the extension.

[0013] Furthermore, this application also proposes that the adjacent ends of the first sleeve and the second sleeve are constructed as compatible inclined surfaces, the inclined surfaces gradually sloping upwards from front to back.

[0014] Furthermore, this application also proposes that the pin is movably disposed within the second sleeve or the first sleeve, and a pulling component is connected to the pin. External force can operate the pulling component to drive the pin to slide within the second sleeve or the first sleeve. When the end of the pin is completely retracted into the second sleeve or the first sleeve, the back rod frame can be flipped relative to the extension. When the end of the pin is inserted into the first sleeve or the second sleeve, the back rod frame is locked relative to the extension.

[0015] Further, the pin shaft is connected with an elastic component, and the elastic force of the elastic component drives the pin shaft to be inserted into the first sleeve or the second sleeve.

[0016] Further, the back rod framework and the seat rod framework are both constructed as U-shaped frameworks, the U-shaped end of the seat rod framework is integrally formed with the extension part by being bent upward, and the U-shaped ends of the back rod framework are respectively hinged to the two extension parts through angle adjusters.

[0017] Further, the upper end of the back rod framework is provided with a reinforcing back rod, the two ends of the reinforcing back rod are respectively connected to the two U-shaped arms of the back rod framework, and the rear end of the seat rod framework is provided with a reinforcing seat rod, the two ends of the reinforcing seat rod are respectively connected to the two U-shaped arms of the seat rod framework close to the extension part.

[0018] Further, the application further provides a folding chair pad, which comprises an internal framework, a filling core wrapped outside the framework, and a sleeve wrapped outside the filling core, and the framework is the folding framework.

[0019] As can be seen from the above, the folding framework and the folding chair pad provided by the application comprise a framework main body and a back rod framework, and a locking assembly is arranged between the back rod framework and the extension part of the framework main body, so that the locking or loosening of the back rod framework relative to the extension part is realized through the simple locking assembly, the problems of unstable locking and complex operation of the folding mechanism in the prior art are solved, and the folding framework and the folding chair pad have the advantages of simple structure, convenient operation, stable locking, and strong multifunction. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 The application provides a folding framework in an unfolded state.

[0021] Fig. 2 The application provides a folding framework in a folded state.

[0022] Fig. 3 The application provides a folding framework in a folded state.

[0023] Fig. 4 The application provides a structure of the locking assembly. DETAILED DESCRIPTION

[0024] The embodiments of the application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the application, and cannot be understood as a limitation of the application.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 according to the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] Example 1:

[0030] like Figs. 1-4 As shown, this embodiment relates to a folding frame, including a frame body 1 and a backrest frame 2. The frame body 1 includes a seat post frame 11 and an extension 12 fixed to the rear side of the seat post frame 11 and bent upwards. The lower end of the backrest frame 2 is hinged to the upper end of the extension 12 of the frame body 1. Figs. 1-3As shown, the back rod framework 2 and the seat rod framework 11 are both constructed as U-shaped frameworks, and the U-shaped end of the seat rod framework 11 is integrally formed with an extension 12 by bending upward; the U-shaped end of the back rod framework 2 is respectively hinged on the two extensions 12 through an angle adjuster 3. Specifically, the U-shaped structure design of the back rod framework 2 and the seat rod framework 11 not only enhances the overall stability of the framework, but also forms the extension 12 through the bending of the U-shaped end, so that the back rod framework 2 can be hinged with the extension 12 through the angle adjuster 3. The arrangement of the angle adjuster 3 allows the back rod framework 2 to be angle-adjusted relative to the seat rod framework 11, thereby adapting to different use requirements, such as sitting or lying on the back. This structural design not only improves the comfort of the folding chair cushion, but also enhances the flexibility and adaptability of its use. Thus, the technical scheme of the present application realizes the stable connection of the back rod framework 2 and the seat rod framework 11 through the combination of the U-shaped framework and the angle adjuster 3, while ensuring that the back rod framework 2 can be angle-adjusted relative to the seat rod framework 11. This design not only improves the comfort of the folding chair cushion, but also enhances the flexibility and adaptability of its use, solving the problems of unstable connection and inconvenient adjustment of the back rod framework 2 and the seat rod framework 11 in the prior art. Compared with the prior art, the technical scheme of the present application has a simple structure, is easy to operate, and has high practicality and economy.

[0031] Further, the upper end of the back rod framework 2 is provided with a reinforcing back rod 21, and the two ends of the reinforcing back rod 21 are respectively connected to the two U-shaped arms of the back rod framework 2; the rear end of the seat rod framework 11 is provided with a reinforcing seat rod 13, and the two ends of the reinforcing seat rod 13 are respectively connected to the two U-shaped arms of the seat rod framework 11 near the extension 12. The arrangement of the reinforcing back rod 21 and the reinforcing seat rod 13 enhances the structural stability and durability of the entire folding framework by connecting the U-shaped arms of the back rod framework 2 and the seat rod framework 11. This design not only improves the load-bearing capacity of the framework, but also ensures that each part of the framework remains stable during use, thereby prolonging the service life of the product.

[0032] In a further scheme, a locking assembly is arranged between the back rod framework 2 and the extension 12 of the framework main body 1, and the locking assembly is used to control the locking or loosening of the back rod framework 2 relative to the extension 12. When the back rod framework 2 is locked relative to the extension 12, the back rod framework 2 is fixed in the extension direction of the extension 12; when the back rod framework 2 is loosened relative to the extension 12, the back rod framework 2 can be flipped relative to the hinge point relative to the extension 12 of the framework main body 1. The technical scheme of the present application realizes the flexible locking and loosening of the back rod framework 2 through the arrangement of the locking assembly, solving the technical problem of locking and loosening between the back rod framework 2 and the framework main body 1 in the folding framework, thereby meeting the needs of use and folding storage. Compared with the prior art, the technical scheme of the present application has a simple structure, is easy to operate, and can effectively improve the use convenience and stability of the folding framework.

[0033] In such Figs. 1-4 In the specific embodiment shown, the locking assembly includes a first sleeve 41 fixed to the extension 12, a second sleeve 42 fixed to the back pole frame 2, and a pin 43 movably disposed within the first sleeve 41 and / or the second sleeve 42. When the back pole frame 2 is flipped relative to the extension 12, the second sleeve 42 rotates relative to the first sleeve 41. When the second sleeve 42 is aligned with the first sleeve 41 and both ends of the pin 43 are respectively located within the second sleeve 42 and the first sleeve 41, the back pole frame 2 is locked relative to the extension 12. When the pin 43 is located only within the second sleeve 42 or the first sleeve 41, the back pole frame 2 can be flipped relative to the extension 12. Specifically, the first sleeve 41 and the second sleeve 42 are fixed to the extension 12 and the back pole frame 2, respectively, and the pin 43 is movably disposed within the first sleeve 41 and / or the second sleeve 42. Thus, this application achieves the locking and flipping functions between the back pole frame 2 and the frame body 1 through the setting of the locking assembly. When the back pole frame 2 is flipped, the first sleeve 41 and the second sleeve 42 can rotate relative to each other, and the switching between locking and unlocking is controlled by the movement of the pin 43. When both ends of the pin 43 are in the second sleeve 42 and the first sleeve 41 respectively, the back pole frame 2 is locked in the extending direction of the extension 12; when the pin 43 is only in the second sleeve 42 or the first sleeve 41, the back pole frame 2 can be flipped relative to the extension 12. This design achieves locking and flipping of the back pole frame 2 through a simple mechanical structure, improving the practicality and convenience of the folding frame. Compared with the prior art, the technical solution of this application simplifies the structure and reduces costs through the setting of the locking component, while improving the convenience and reliability of operation. The switching between locking and unlocking by sliding the pin 43 makes the locking and flipping of the back pole frame 2 more flexible and efficient.

[0034] In a further scheme, the pin shaft 43 is movably arranged in the second sleeve 42 and the first sleeve 41, and slides in the second sleeve 42 and the first sleeve 41 based on gravity. As a preferred embodiment, the pin shaft 43 can slide by simple gravity effect without additional driving mechanism, thus simplifying the structure. Compared with the prior art, the scheme has a simpler structure, is more convenient to operate, and can effectively avoid the problem of unstable adjustment of the locking structure. Specifically, by sliding of the pin shaft 43 in the second sleeve 42 and the first sleeve 41, it can be ensured that the back rod framework 2 can be stably fixed when it needs to be locked, and can be easily unlocked when it needs to be turned over, thus improving the use efficiency and reliability of the folding framework. Specifically, the length of the pin shaft 43 is greater than the length of the first sleeve 41, so that when the pin shaft 43 slides into the first sleeve 41 based on gravity effect, the upper end of the pin shaft 43 is in the second sleeve 42, and the back rod framework 2 is locked relative to the extension part 12; the length of the pin shaft 43 is less than or equal to the length of the second sleeve 42, so that when the pin shaft 43 slides into the second sleeve 42 under the action of gravity, the pin shaft 43 is completely accommodated in the second sleeve 42, and the back rod framework 2 can be turned over relative to the extension part 12. In the scheme, the length of the pin shaft 43 is the key, which is controlled to slide between the first sleeve 41 and the second sleeve 42 under the action of gravity. This design realizes the locking and turning over functions of the back rod framework 2 by a simple mechanical structure, which is simple in structure, low in cost, and convenient to operate. Therefore, the length of the pin shaft 43 is designed to automatically realize the locking or unlocking function during sliding, which improves the convenience and stability of operation. Thus, the technical scheme of the present application realizes stable locking or turning over of the back rod framework 2 by the gravity sliding mechanism of the pin shaft 43.

[0035] As Fig. 1 and 3As shown, the adjacent ends of the first sleeve 41 and the second sleeve 42 are designed as matching bevels 44, which gradually tilt upward from front to back. This design allows the first sleeve 41 and the second sleeve 42 to align more smoothly when they are docked, reducing the problem of unstable locking or unsmooth turning caused by structural mismatch. At the same time, the design of the inclination angle of the bevel 44 also makes the back rod skeleton 2 turn more smoothly, reducing friction and resistance, and improving the convenience of use. Specifically, the design of the bevel 44 can be implemented in various ways. For example, the inclination angle of the bevel 44 can be adjusted according to actual needs to ensure that the first sleeve 41 and the second sleeve 42 can achieve the best matching effect when they are docked. In addition, the surface of the bevel 44 can be specially treated, such as adding a lubricating coating or using low-friction materials, to further reduce friction and resistance. As a preferred embodiment, the inclination angle of the bevel 44 can be set to between 15 degrees and 30 degrees, which can ensure the smoothness of docking and the stability after locking. Thus, the technical scheme of the present application effectively solves the technical problem of unstable locking or unsmooth turning of the first sleeve 41 and the second sleeve 42 when they are docked due to structural mismatch, through the design of the bevel 44. Compared with the prior art, this scheme not only improves the smoothness of docking and the stability after locking, but also reduces the friction and resistance when turning, thereby improving the convenience and comfort of use.

[0036] In another embodiment, the pin shaft 43 is movably arranged in the second sleeve 42 or the first sleeve 41, and a pulling component is connected to the pin shaft 43. An external force can operate the pulling component to drive the pin shaft 43 to slide in the second sleeve 42 or the first sleeve 41. When the end of the pin shaft 43 is fully accommodated in the second sleeve 42 or the first sleeve 41, the backrest frame 2 can be flipped relative to the extension 12. When the end of the pin shaft 43 is inserted into the first sleeve 41 or the second sleeve 42, the backrest frame 2 is locked relative to the extension 12. Specifically, the pin shaft 43 is connected to an external operating mechanism through the pulling component, which can be a rope, a pull rod, or other forms of connecting members. When a user operates the pulling component with an external force, the pin shaft 43 slides in the second sleeve 42 or the first sleeve 41. The sliding of the pin shaft 43 can be achieved by manual operation or with the aid of auxiliary tools. For example, the pulling component can be designed as a pull ring or handle, which is convenient for the user to pull directly. In addition, the length and diameter of the pin shaft 43 can be adjusted according to actual needs to ensure that it can be smoothly inserted or withdrawn from the sleeve during sliding. In this way, the position of the pin shaft 43 is controlled by operating the pulling component with an external force, thereby achieving the locking or loosening between the backrest frame 2 and the main frame body 1. When the end of the pin shaft 43 is fully accommodated in the second sleeve 42 or the first sleeve 41, the backrest frame 2 can be flipped relative to the extension 12, providing flexibility. When the end of the pin shaft 43 is inserted into the first sleeve 41 or the second sleeve 42, the backrest frame 2 is locked relative to the extension 12, providing stability. In this way, the user can easily adjust the position of the backrest frame 2 as needed, solving the technical problem of locking or loosening between the backrest frame 2 and the main frame body 1 by operating with an external force. Compared with the prior art, this technical solution has the advantages of simple operation, compact structure, high reliability, etc. Through the design of the pulling component, the user can intuitively control the position of the pin shaft 43 without complex operation steps. At the same time, the cooperation between the pin shaft 43 and the sleeve ensures the stability of the locking and loosening process, avoiding functional failure due to looseness or jamming. Compared with the first embodiment, this solution is simpler to operate, and the unlocked state does not require the soft chair to be inverted, but relatively, the pulling component needs to be set and not affected by the core and the sleeve, the structure is more complex, and the cost is higher.

[0037] Further, the application also proposes that the pin shaft 43 is connected with an elastic component, and the elastic force of the elastic component drives the pin shaft 43 to be inserted into the first sleeve 41 or the second sleeve 42. Specifically, the elastic component can be a spring, rubber, or other elastic materials. As a preferred embodiment, one end of the spring is fixed on the pin shaft 43, and the other end is fixed on the inner wall of the second sleeve 42 or the first sleeve 41. When the pin shaft 43 needs to be inserted into the first sleeve 41 or the second sleeve 42, the elastic force of the elastic component will automatically push the pin shaft 43 to be inserted, so as to realize the locking of the back rod framework 2 relative to the extension part 12. In addition, the elastic component can also be designed in the form of adjustable elastic force to adapt to different use requirements. Thus, by introducing the elastic component, the application simplifies the operation process of the pin shaft 43. The elastic force of the elastic component enables the pin shaft 43 to be automatically inserted into the first sleeve 41 or the second sleeve 42, so as to realize the locking of the back rod framework 2 relative to the extension part 12. This design reduces the dependence on external force operation, improves the convenience and efficiency of operation. The introduction of the elastic component not only optimizes the locking mechanism, that is, only needs to be unlocked through external force operation, but also enhances the stability and reliability of the entire folding framework. Compared with the prior art, the technical scheme of the application has significant advantages in operation convenience and structural stability.

[0038] Embodiment 2:

[0039] This embodiment relates to a folding chair cushion, which comprises an internal framework, a filling core wrapped outside the framework, and a sleeve wrapped outside the filling core. The framework adopts the folding framework described in embodiment 1. Thus, the folding chair cushion of the application realizes the folding function of the chair cushion by adopting the folding framework as the internal framework. The design of the framework makes the chair cushion more compact when folded, which is convenient for carrying and storing. The wrapping of the filling core and the sleeve not only provides a comfortable sitting feeling, but also protects the internal framework, prolonging the service life of the product. This design solves the problem of balancing between portability and comfort of traditional folding chair cushions, providing a solution that is both lightweight and comfortable. Compared with the prior art, the folding chair cushion of the application is simpler in structure, more convenient to operate, and lower in cost, having significant technical advantages.

[0040] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model without departing from the principles and purposes of the utility model.

Claims

1. A folding frame comprising a frame body (1) and a backrest frame (2); the frame body (1) comprises a seat frame (11) and an extension (12) fixed to the rear side of the seat frame (11) and curved upward; the lower end of the backrest frame (2) is hingedly arranged on the upper end of the extension (12) of the frame body (1); characterized in that: The locking assembly is arranged between the back rod frame (2) and the extension (12) of the frame body (1), and is used to control locking or loosening of the back rod frame (2) relative to the extension (12); when the back rod frame (2) is locked relative to the extension (12), the back rod frame (2) is fixed in the extension direction of the extension (12); when the back rod frame (2) is loosened relative to the extension (12), the back rod frame (2) can be flipped relative to the hinge point relative to the extension (12) of the frame body (1).

2. The foldable framework of claim 1, wherein: The locking assembly comprises a first sleeve (41) fixed on the extension (12), a second sleeve (42) fixed on the back rod frame (2), and a pin shaft (43) movably arranged in the first sleeve (41) and / or the second sleeve (42); when the back rod frame (2) is flipped relative to the extension (12), the second sleeve (42) is rotated relative to the first sleeve (41); when the second sleeve (42) is butted against the first sleeve (41) and the pin shaft (43) is arranged at two ends in the second sleeve (42) and the first sleeve (41) respectively, the back rod frame (2) is locked relative to the extension (12); when the pin shaft (43) is arranged in the second sleeve (42) or the first sleeve (41) only, the back rod frame (2) can be flipped relative to the extension (12).

3. The foldable framework of claim 2, wherein: The pin shaft (43) is movably arranged in the second sleeve (42) and the first sleeve (41), and the pin shaft (43) slides in the second sleeve (42) and the first sleeve (41) based on gravity.

4. The foldable framework of claim 3, wherein: The length of the pin shaft (43) is greater than the length of the first sleeve (41), so that when the pin shaft (43) slides into the first sleeve (41) based on gravity, the upper end of the pin shaft (43) is arranged in the second sleeve (42), and the back rod frame (2) is locked relative to the extension (12); the length of the pin shaft (43) is less than or equal to the length of the second sleeve (42), so that when the pin shaft (43) slides into the second sleeve (42) under the action of gravity, the pin shaft (43) is completely arranged in the second sleeve (42), and the back rod frame (2) can be flipped relative to the extension (12).

5. The foldable framework of claim 1, wherein: The adjacent ends of the first sleeve (41) and the second sleeve (42) are constructed as matching inclined surfaces (44) which gradually incline upward from front to back.

6. The foldable framework of claim 2, wherein: The pin shaft (43) is movably arranged in the second sleeve (42) or the first sleeve (41), and a pulling component is connected to the pin shaft (43); an external force operating the pulling component can drive the pin shaft (43) to slide in the second sleeve (42) or the first sleeve (41); when the end of the pin shaft (43) is completely arranged in the second sleeve (42) or the first sleeve (41), the back rod frame (2) can be flipped relative to the extension (12); when the end of the pin shaft (43) is inserted into the first sleeve (41) or the second sleeve (42), the back rod frame (2) is locked relative to the extension (12).

7. The foldable framework of claim 6, wherein: The pin shaft (43) is connected with an elastic component, and the elastic force of the elastic component drives the pin shaft (43) to be inserted into the first sleeve (41) or the second sleeve (42).

8. The foldable framework of claim 1, wherein: The back rod frame (2) and the seat rod frame (11) are both constructed as U-shaped frames, the U-shaped ends of the seat rod frame (11) are bent upward to form the extensions (12) integrally; the U-shaped ends of the back rod frame (2) are hingedly connected to the two extensions (12) through angle adjusters (3) respectively.

9. The foldable framework of claim 8, wherein: The upper end of the back rod frame (2) is provided with a reinforcing back rod (21), the two ends of the reinforcing back rod (21) are connected to the two U-shaped arms of the back rod frame (2) respectively; the rear end of the seat rod frame (11) is provided with a reinforcing seat rod (13), the two ends of the reinforcing seat rod (13) are connected to the two U-shaped arms of the seat rod frame (11) near the extensions (12) respectively.

10. A folding chair cushion; comprising an inner frame, a filling core wrapped outside the frame, and a cover wrapped outside the filling core; characterized in that: The frame is the folding frame as claimed in any one of claims 1-9.

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