Adjustable folding support frame and folding chair

Abstract

The utility model discloses an adjustable folding support frame and a folding chair. The first supporting pieces are rotationally connected with the upper part of the supporting seat; the second supporting pieces are rotationally connected with the lower part of the supporting seat; the connecting assembly comprises a first connecting piece and a second connecting piece, the first connecting piece is connected with the first supporting piece, the second connecting piece is connected with the second supporting piece, and the first connecting piece and the second connecting piece are in sliding connection in the first direction; the first connecting piece is provided with a first limiting point on the sliding path of the second connecting piece, the supporting seat is provided with an adjusting assembly, the adjusting assembly is suitable for forming a second limiting point on the sliding path of the second connecting piece, and the second limiting point is suitable for being close to or away from the first limiting point. The unfolding angle of the first supporting piece can be locked by operating the adjusting assembly, or the first supporting piece can obtain a movable unfolding angle, and higher practicability and applicability are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of outdoor equipment, and in particular to an adjustable folding support frame and a folding chair. Background Art

[0002] Camping is a short-term outdoor lifestyle. It is a temporary outdoor camping area specially set up for engineering, military, surveying, tourism, etc., including tents, straw huts, garages and other simple forms of short-term outdoor living camps. With the improvement of people's living standards, outdoor camping has gradually become popular as a form of leisure and entertainment. When people go camping outdoors, they usually bring tables, chairs, benches and other supplies to improve the comfort of camping. In order to achieve the purpose of portability when camping outdoors, tables, chairs and benches specially used for outdoor camping are usually designed as folding structures to effectively reduce the storage volume. Among them, folding chairs are the most frequently used items in outdoor camping, and higher requirements are placed on their structural stability and comfort.

[0003] However, the existing support frames of folding chairs have the following defects: the common support frames cannot adjust the unfolding angle after unfolding, and the functionality is poor. Summary of the invention

[0004] One object of the present application is to provide an adjustable folding support frame and a folding chair with adjustable unfolding angle.

[0005] In order to achieve the above objectives, the technical solution adopted in this application is: an adjustable folding support frame, comprising:

[0006] Support seat;

[0007] A plurality of first support members, wherein the first support members are rotatably connected to the upper portion of the support seat;

[0008] A plurality of second support members, wherein the second support members are rotatably connected to the lower portion of the support seat;

[0009] A connecting assembly, wherein the connecting assembly is adapted to enable the rotation of the first supporting member and the rotation of the second supporting member to be linked to each other, the connecting assembly comprising a first connecting member and a second connecting member, the first connecting member is connected to the first supporting member, the second connecting member is connected to the second supporting member, and the first connecting member and the second connecting member are connected by sliding along a first direction;

[0010] The first connecting member is provided with a first limiting point on the sliding path of the second connecting member, and an adjusting component is provided on the supporting seat, and the adjusting component is suitable for forming a second limiting point on the sliding path of the second connecting member, and the second limiting point is suitable for being close to or away from the first limiting point.

[0011] In some embodiments, the adjustment assembly includes a controller and a connecting member, the controller includes an operating end and a connecting end, the operating end is located outside the support seat, the connecting end is located inside the support seat and is slidingly connected to the connecting member along a first direction, the outer periphery of the connecting member is transmission-connected to the first connecting member, and the controller is suitable for causing the connecting member to rotate circumferentially along the first direction and causing the connecting member and the first connecting member to move relative to each other at least in the first direction.

[0012] In some embodiments, the support seat includes a first seat body and a second seat body, the first seat body and the second seat body are connected in a circumferential rotation along a first direction, the connecting component is connected to the first support member in the first seat body, and the connecting component is connected to the second support member in the second seat body.

[0013] In some embodiments, the connection between the first support member and the connecting assembly is a rack and pinion connection, and a plurality of the first support members and the connecting assembly are connected at least respectively by racks and / or gears with various parameters.

[0014] In some embodiments, a rack structure is arranged on the connection assembly along a first direction, and a gear structure is arranged on the first support member along a circumferential direction with a rotation connection on the support seat as an axis.

[0015] In some embodiments, the connecting component is provided with an active cavity along the circumference of the first direction, and a connecting portion is provided on the second support member, and the connecting portion is provided at an end of the connecting component close to the rotating connection of the second support member on the support seat, and the connecting portion is suitable for being interlocked and connected with the active cavity, and is suitable for following the connecting component to move in at least the first direction.

[0016] In some embodiments, the end of the connecting portion has a curved structure, so that when the connecting portion moves following the connecting component, the height of the connecting portion in the first direction is always no greater than the height of the movable cavity in the first direction.

[0017] In some embodiments, at least one guide column is provided in the support seat along the first direction, and the connecting component is slidably connected to the guide column; at least one sliding channel is provided in the support seat along the first direction, and the connecting component is suitable for sliding along the sliding channel.

[0018] In some embodiments, the first support members are radially distributed along the circumference of the support seat; the second support members are radially distributed along the circumference of the support seat; the first support member includes a plurality of first support rods, and the plurality of first support rods are nested and cooperated with each other so that the first support member can be extended and retracted in the length direction; the second support member is provided with a rotatable support foot at one end away from the support seat, and the support foot has a support surface, and the support surface is suitable for increasing the contact area between the second support member and the ground.

[0019] A folding chair comprises a seat surface and any one of the above-mentioned adjustable folding support frames, wherein the seat surface is cooperatively connected with the first support member.

[0020] Compared with the prior art, the beneficial effects of the present application are: the adjustable folding support frame of the present application can limit the movement of the connecting component by setting an adjustment component, and the adjustment component can reduce or increase the movable range between the first connecting member and the second connecting member. When the adjustment component reduces the movable range between the first connecting member and the second connecting member, the structure of the folding support frame can be made more stable. When the adjustment component increases the movable range between the first connecting member and the second connecting member, the first support member can follow the first connecting member to obtain the corresponding movable range, thereby obtaining higher mobility to adapt to chair surfaces of different specifications, and facilitating the adjustment of parameters such as the angle and height of the seat, and having higher practicality and applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the unfolded state according to a preferred embodiment of the present application.

[0022] Figure 2 It is a connection diagram of a first support member and a connection assembly according to a preferred embodiment of the present application.

[0023] Figure 3 It is a connection diagram of a second support member and a connection assembly according to a preferred embodiment of the present application.

[0024] Figure 4 It is a schematic diagram of the folded state according to a preferred embodiment of the present application.

[0025] Figure 5 It is an exploded view of a folded state according to a preferred embodiment of the present application.

[0026] Figure 6 It is a schematic diagram of the structure when the first limiting point and the second limiting point are close to each other according to a preferred embodiment of the present application.

[0027] Figure 7 It is a structural schematic diagram when the first limiting point and the second limiting point are far apart according to a preferred embodiment of the present application.

[0028] Figure 8 It is a connection diagram of a controller and a connecting member according to a preferred embodiment of the present application.

[0029] Fig. 9 This is a diagram showing the appearance of a controller in a knob structure according to a preferred embodiment of the present application.

[0030] Fig.10 It is a connection diagram when the second support member and the connection assembly are connected by a gear rack according to a preferred embodiment of the present application.

[0031] Fig.11 This is a diagram showing the appearance of a folding chair formed according to a preferred embodiment of the present application.

[0032] In the figure: 1. support seat; 11. limit groove; 12. guide column; 13. sliding channel; 14. first seat body; 15. second seat body; 2. first support member; 21. gear; 22. first support rod; 3. second support member; 31. connecting part; 311. curved surface structure; 32. supporting foot; 321. supporting surface; 4. connecting assembly; 41. rack; 42. movable cavity; 421. limit plate; 43. first connecting member; 44. second connecting member; 441. first limit point; 45. main structure; 46. slider structure; 5. adjustment assembly; 51. controller; 511. operating end; 512. connecting end; 52. connecting member; 521. second limit point; 6. chair surface. DETAILED DESCRIPTION

[0033] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0034] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0035] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0036] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0037] The present application is further described below with reference to the accompanying drawings:

[0038] like Figures 1 to 11 As shown, the present application provides an adjustable folding support frame, comprising:

[0039] Support seat 1;

[0040] A plurality of first support members 2, wherein the first support members 2 are rotatably connected to the upper portion of the support seat 1;

[0041] A plurality of second support members 3, wherein the second support members 3 are rotatably connected to the lower portion of the support base 1;

[0042] A connecting component 4, the connecting component 4 is slidably disposed in the support seat 1 along a first direction, the upper portion of the connecting component 4 is connected to the first support member 2, and the lower portion of the connecting component 4 is connected to the second support member 3, and the connecting component 4 is suitable for making the rotation of the first support member 2 and the rotation of the second support member 3 mutually linked;

[0043] In the present application, the rotation planes of the first support member 2 and the second support member 3 are both set to pass through the axis of the support seat 1. The first support member 2 and the second support member 3 can rotate to the same side of the support seat 1 under the action of the connecting component 4, thereby achieving folding.

[0044] It is worth noting that in the present application, the first support member 2 is usually used as a supporting structure in contact with the seat surface 6, and the second support member 3 is usually used as a supporting structure in contact with the ground. When the lengths and unfolding angles of all the second support members 3 are the same, the folding support frame of the present application can obtain higher support stability. At this time, the folding support frame is unfolded and placed on the ground, and the first direction is parallel to the vertical direction.

[0045] In some embodiments, the connection between the first support member 2 and the connecting component 4 is in the form of a rack and pinion connection, which can convert linear motion into rotational motion, so that the first support member 2 can rotate following the sliding of the connecting component 4.

[0046] In some embodiments, multiple first support members 2 and connecting components 4 are connected at least respectively by gears and / or racks with multiple parameters. By adjusting the parameters of the gears and racks, the expansion angle between the first support members 2 and the connecting components 4 can be changed.

[0047] like Figure 2 In the embodiment shown, a specific implementation method can be that a rack 41 structure is set on the connecting component 4 along the first direction, and a gear 21 structure is set on the first support member 2 along the circumferential direction with the rotating connection on the support seat 1 as the axis. When the connecting component 4 slides along the first direction, it can drive the first support member 2 to rotate synchronously with the rotating connection on the support seat 1 as the axis.

[0048] In some embodiments, the connecting component 4 is provided with an active cavity 42 along the circumference of the first direction, and the second support member 3 is provided with a connecting portion 31, and the connecting portion 31 is provided at an end of the connecting component 4 close to the rotating connection of the second support member 3 on the support seat 1, that is, the connecting portion 31 and an end of the second support member 3 outside the support seat 1 are respectively located on both sides of the rotating connection of the second support member 3 on the support seat 1, and the connecting portion 31 is suitable for being interlocked and connected with the active cavity 42, and is suitable for following the movement of the connecting component 4 in at least the first direction, and the connection between the connecting component 4 and the second support member 3 is maintained by the dynamic cooperation between the active cavity 42 and the connecting portion 31, to ensure that the two can move synchronously without jamming.

[0049] like Figure 3 In the illustrated embodiment, the formation of the active cavity 42 can be achieved by providing a limit plate 421 at the bottom of the connecting component 4. The limit plate 421 can be fixed to the bottom of the connecting component 4 by means of general fasteners such as bolts. There is a gap around the bottom of the connecting component 4 and the limit plate 421, and the gap can be used as the active cavity 42.

[0050] like Figure 6 In the illustrated embodiment, the active cavity 42 can be formed by setting two limit plates 421 at the bottom of the connecting component 4. The two limit plates 421 can be fixed to the bottom of the connecting component 4 by means of universal fixing parts such as gaskets. The two limit plates 421 can be limited by installing sleeves to form a gap, which can be used as the active cavity 42.

[0051] In some embodiments, the end of the connecting portion 31 has a curved structure 311, so that when the connecting portion 31 moves with the connecting component 4, the height of the connecting portion 31 in the first direction is always no greater than the height of the active cavity 42 in the first direction, ensuring that the connecting portion 31 can rotate unimpeded in the active cavity 42, thereby improving the smoothness of the movement.

[0052] Furthermore, to ensure smooth movement, when the connecting portion 31 moves following the connecting assembly 4 , the curved surface structure 311 can maintain contact and cooperation with two opposite sides of the movable cavity 42 in the first direction.

[0053] like Figure 3In the illustrated embodiment, a ball-like structure is preferably used at the end of the connection portion 31 . When a state change occurs between the connection portion 31 and the active cavity 42 , the connection portion 31 can always be located in the active cavity 42 and be pushed and limited by the limiting plate 421 .

[0054] It is worth noting that the support seat 1 also needs to set a limiting structure on the outermost side after the second support member 3 is unfolded, which can be a limiting groove 11 or other structural form. When the second support enters the limiting groove 11, it will not be able to continue to rotate, so as to avoid excessive rotation of the second support member 3 resulting in the inability to form support, so that the second support member 3 can form a stable support structure after rotation and unfolding.

[0055] like Figure 2 and 3 In the illustrated embodiment, at least one guide column 12 is provided in the support seat 1 along the first direction, and the connecting component 4 is slidably connected to the guide column 12 . The guide column 12 can make the sliding process of the connecting component 4 more stable and reduce the shaking of the connecting component 4 .

[0056] In some embodiments, at least one sliding channel 13 is provided in the support base 1 along the first direction, and the connecting component 4 is suitable for sliding along the sliding channel 13 .

[0057] like Figure 2 and 5 In the illustrated embodiment, the sliding channel 13 may be a cylindrical structure for accommodating the main structure 45 at the central axis position of the connecting assembly 4 .

[0058] like Figure 3 and 5 In the illustrated embodiment, the sliding channel 13 may be a prismatic structure for accommodating and guiding a slider structure 46 provided with a rack 41 on the connecting assembly 4 .

[0059] like Figure 1 In the illustrated embodiment, the first support members 2 are radially distributed along the circumference of the support seat 1 , so that the first support members 2 can be matched and connected with a larger seat surface 6 .

[0060] like Figure 1 In the illustrated embodiment, the first support members 2 are distributed at equal intervals along the circumference of the support seat 1, so that the force is more uniform and the structure is more stable.

[0061] like Figure 1 In the illustrated embodiment, the second support members 3 are radially distributed along the circumference of the support seat 1 , so that the second support members 3 can form a more stable support structure.

[0062] like Figure 1 In the illustrated embodiment, the second support members 3 are distributed at equal intervals along the circumference of the support seat 1, so that the force is more uniform and the structure is more stable.

[0063] like Figure 1 and 5 In the illustrated embodiment, in order to ensure that the folding support frame can be folded smoothly and the volume after folding is small enough, the first support member 2 and the second support member 3 can be staggered in the circumferential direction of the first direction. When the first support member 2 is folded, it can be retracted into the gap between the two second support members 3 without structural interference, thereby making full use of the interval between the second support members 3 to accommodate the first support member 2, so as to minimize the folded volume.

[0064] like Figure 1 In the illustrated embodiment, the first support member 2 includes a plurality of first support rods 22 , and the plurality of first support rods 22 are nested and matched with each other, so that the first support member 2 can be extended and retracted in the length direction.

[0065] In some embodiments, an elastic snap-fit ​​structure, such as a spring buckle, is provided between the plurality of first support rods 22, which can limit the position after extending mutually, thereby achieving fixation of the first support member 2 after extension.

[0066] like Figures 1 to 3 In the illustrated embodiment, the second support member 3 is provided with a rotatable support foot 32 at one end away from the support seat 1, and the support foot 32 has a support surface 321, which is suitable for increasing the contact area between the second support member 3 and the ground, thereby further improving the stability of the support structure formed by the second support member 3.

[0067] In some embodiments, the contact area between the support surface 321 and the ground is larger than the contact area between the second support member 3 and the ground, and the contact area between the support surface 321 and the ground is larger than the contact area between the rest of the support foot 32 and the ground.

[0068] like Figure 6 and 7In the illustrated embodiment, the connecting component 4 includes a first connecting member 43 and a second connecting member 44, the first connecting member 43 is connected to the first support member 2, the second connecting member 44 is connected to the second support member 3, the first connecting member 43 and the second connecting member 44 are slidably connected along a first direction, the first connecting member 43 is provided with a first limiting point 441 on the sliding path of the second connecting member 44, an adjusting component 5 is provided on the support seat 1, the adjusting component 5 is suitable for forming a second limiting point 521 on the sliding path of the second connecting member 44, the second limiting point 521 is suitable for approaching or moving away from the first limiting point 441, it can be understood that when the adjusting component 5 is controlled to make the second limiting point 521 close to the first limiting point 441, the relative activity space between the first connecting member 43 and the second connecting member 44 is smaller, and when the adjusting component 5 is controlled to make the second limiting point 521 move away from the first limiting point When the limit point 441 is reached, the relative movable space between the first connecting member 43 and the second connecting member 44 becomes larger. Since the second support member 3 remains relatively fixed to the support seat 1 in the unfolded state, the second connecting member 44 connected to the second support member 3 also remains relatively fixed. The first connecting member 43 can perform corresponding activities according to the relationship between the first limit point 441 and the second limit point 521, thereby enabling the first support member 2 to also produce corresponding activities. The advantage of such a design is that when the first limit point 441 and the second limit point 521 are close to each other, they can play a locking role, making the unfolding of the first support rod 22 more stable. When the first limit point 441 and the second limit point 521 are far away from each other, the first support rod 22 can have a certain angle of movable margin, so that it can be freely adjusted by the user and has higher applicability.

[0069] It is understandable that when the first limit point 441 and the second limit point 521 are far away from each other, the first support rod 22 has a certain angle of activity margin, and the first support rod 22 can be fixed to a required angle by setting a damping structure or setting a limit structure or installing the seat surface 6.

[0070] like Figure 6 and 7 In the illustrated embodiment, the adjustment assembly 5 includes a controller 51 and a connecting member 52, the controller 51 includes an operating end 511 and a connecting end 512, the operating end 511 is located outside the support base 1, the connecting end 512 is located inside the support base 1, and is slidingly connected to the connecting member 52 along a first direction, the outer periphery of the connecting member 52 is transmission-connected to the first connecting member 43, and the controller 51 is suitable for causing the connecting member 52 to rotate circumferentially along the first direction, and causing the connecting member 52 and the first connecting member 43 to move relative to each other at least in the first direction.

[0071] Specifically, Figure 6 and 7As shown, the first limit point 441 can be set using the bottom of the first connecting member 43, the top of the second connecting member 44 passes through the bottom of the first connecting member 43 and extends into the interior of the first connecting member 43, and when the second connecting member 44 slides downward relative to the second connecting member 44 to the first limit point 441, it cannot be separated from the second connecting member 44, and the second limit point 521 can be set by the bottom of the connecting member 52, and when the second connecting member 44 slides upward relative to the second connecting member 44 to the second limit point 521, it will be resisted by the connecting member 52.

[0072] In some embodiments, a gasket may be provided on the top of the second connecting member 44 to limit the position and prevent separation.

[0073] like Figure 8 In the illustrated embodiment, the connection end 512 and the coupling member 52 are snap-connected in the circumferential direction along the first direction, so that the controller 51 and the coupling member 52 can slide relative to each other in the first direction while the coupling member 52 can rotate along with the rotation of the controller 51. Specifically, the snap connection can be achieved by providing an asymmetric structure in the rotation direction of the controller 51 and the coupling member 52, such as a bayonet structure.

[0074] like Figure 6 and 7 In the illustrated embodiment, the coupling member 52 and the first connecting member 43 are threadedly connected, and when the coupling member 52 rotates, the first connecting member 43 can move relatively along the first direction.

[0075] like Fig. 9 In the illustrated embodiment, the operating end 511 may be configured as a knob 511 structure to facilitate user operation. Operation marks may also be provided around the knob to facilitate user observation of the adjustment status of the knob.

[0076] like Figure 6 and 7 In the illustrated embodiment, the support seat 1 includes a first seat body 14 and a second seat body 15, and the first seat body 14 and the second seat body 15 are connected for circumferential rotation along a first direction. The connecting component 4 is connected to the first support member 2 in the first seat body 14, and the connecting component 4 is connected to the second support member 3 in the second seat body 15. By setting the support seat 1 as a split structure, relative rotation can occur between the first support member 2 and the second support member 3, thereby realizing the functional effect of a swivel chair.

[0077] The split structures of the connecting component 4 and the supporting base 1 can be used in combination with each other. When the connecting component 4 and the supporting base 1 are both split structures, the angle adjustment function of the first supporting member 2 and the rotation function of the folding supporting member can be realized simultaneously, which has higher practicality and better use experience.

[0078] like Fig.11As shown, the present application also provides a folding chair, including a seat seat 6 and an adjustable folding support frame of any of the above-mentioned embodiments, the seat seat 6 is cooperatively connected with the first support member 2, and the seat seat 6 can be sleeved with the top end of the first support member 2. When the adjustment component is operated, the first support member 2 can obtain different unfolding angles, so that it can be cooperatively connected with seat seats 6 of different specifications and shapes, and has higher applicability.

[0079] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. An adjustable folding support frame, characterized in that: include: Support seat; A plurality of first support members, wherein the first support members are rotatably connected to the upper portion of the support seat; A plurality of second support members, wherein the second support members are rotatably connected to the lower portion of the support seat; A connecting assembly, wherein the connecting assembly is adapted to enable the rotation of the first supporting member and the rotation of the second supporting member to be linked to each other, the connecting assembly comprising a first connecting member and a second connecting member, the first connecting member is connected to the first supporting member, the second connecting member is connected to the second supporting member, and the first connecting member and the second connecting member are connected by sliding along a first direction; The first connecting member is provided with a first limiting point on the sliding path of the second connecting member, and an adjusting component is provided on the supporting seat, and the adjusting component is suitable for forming a second limiting point on the sliding path of the second connecting member, and the second limiting point is suitable for being close to or away from the first limiting point.

2. An adjustable folding support frame as claimed in claim 1, characterized in that: The adjustment component includes a controller and a connecting member, the controller includes an operating end and a connecting end, the operating end is located outside the support seat, the connecting end is located inside the support seat and is slidably connected to the connecting member along a first direction, the outer periphery of the connecting member is transmission-connected to the first connecting member, and the controller is suitable for causing the connecting member to rotate circumferentially along the first direction and causing the connecting member and the first connecting member to move relative to each other at least in the first direction.

3. The adjustable foldable support frame according to claim 1, characterized in that: The support seat includes a first seat body and a second seat body, the first seat body and the second seat body are connected to each other in a circumferential rotation along a first direction, the connecting component is connected to the first support member in the first seat body, and the connecting component is connected to the second support member in the second seat body.

4. The adjustable foldable support frame according to claim 1, characterized in that: The connection form between the first support member and the connecting assembly is a rack and pinion connection, and a plurality of the first support members and the connecting assembly are connected at least respectively by racks and / or gears with various parameters.

5. The adjustable foldable support frame according to claim 4, characterized in that: A rack structure is arranged on the connecting component along a first direction, and a gear structure is arranged on the first supporting member along a circumferential direction with a rotating connection on the supporting seat as an axis.

6. The adjustable foldable support frame according to claim 1, characterized in that: The connecting component is provided with an active cavity along the circumference of the first direction, and the second support member is provided with a connecting portion, which is arranged at an end of the connecting component close to the rotating connection of the second support member on the support seat, and the connecting portion is suitable for being engaged with the active cavity and suitable for following the connecting component to move in at least the first direction.

7. An adjustable foldable support frame as claimed in claim 6, characterized in that: The end of the connecting portion has a curved surface structure, so that when the connecting portion moves following the connecting assembly, the height of the connecting portion in the first direction is always no greater than the height of the movable cavity in the first direction.

8. The adjustable foldable support frame according to claim 1, characterized in that: At least one guide column is provided in the support seat along the first direction, and the connecting component is slidably connected to the guide column; at least one sliding channel is provided in the support seat along the first direction, and the connecting component is suitable for sliding along the sliding channel.

9. The adjustable foldable support frame according to claim 1, characterized in that: The first support member is radially distributed along the circumference of the support seat; the second support member is radially distributed along the circumference of the support seat; the first support member includes a plurality of first support rods, and the plurality of first support rods are nested and cooperated with each other so that the first support member can be extended and retracted in the length direction; the second support member is provided with a rotatable support foot at one end away from the support seat, and the support foot has a support surface, and the support surface is suitable for increasing the contact area between the second support member and the ground.

10. A folding chair, characterized in that: It comprises a chair seat and the adjustable folding support frame according to any one of claims 1 to 9, wherein the chair seat is cooperatively connected with the first support member.

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