A multi-functional folding chair

Abstract

This utility model discloses a multifunctional folding chair, including a stool assembly and a chair assembly. The stool assembly includes a stool and foldable support legs mounted on the bottom side of the stool. The stool is for upright seating. The chair assembly includes a detachable chair frame mounted on the upper side of the stool and a chair cover mounted on the chair frame. The chair cover is for leaning against. When the support legs are extended and the chair assembly is mounted on the stool, the folding chair switches to a high-legged reclining chair state. When the support legs are folded and stored, and the chair assembly is mounted on the stool, the folding chair switches to a low-legged reclining chair state. When the support legs are extended and the chair assembly is removed from the stool, the folding chair switches to a high stool state. This utility model can be switched between high-legged reclining chair, low-legged reclining chair, and high stool states according to different usage scenarios. The folding structure and folding process are simple, and the installation and folding operation are convenient and quick. The folded size is small.

Description

Technical Field

[0001] This utility model relates to the field of folding chair technology, specifically to a multifunctional folding chair. Background Technology

[0002] Existing chairs can be categorized into foldable and non-foldable chairs based on their storage methods. Foldable chairs, in particular, can be further divided into bundled folding chairs and panel folding chairs based on their folding mechanism. However, each type of chair has its own advantages and disadvantages in terms of function or structure. For example, a folding chair disclosed in Chinese Patent Publication No. CN202698435U uses a panel folding method. While the chair's aesthetic appeal is enhanced by its prominent curves, it occupies a relatively large volume when folded. On the other hand, a folding mechanism and a folding chair with this mechanism disclosed in Chinese Patent Publication No. CN219460682U uses a bundled folding method. Although this reduces the folded volume, the folding structure and process are complex, making folding inconvenient, and it only offers a high-backed reclining chair form, limiting its usability.

[0003] In summary, the existing chair structure is not perfect in terms of function, and it takes up a lot of space when unfolded or folded. The structure is complex, inconvenient to install, use or fold, lacks aesthetic appeal, and has limited use cases. Utility Model Content

[0004] The present invention aims to provide a multifunctional folding chair to solve the aforementioned technical problems.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a multifunctional folding chair, including a stool assembly and a chair assembly. The stool assembly includes a stool and a support leg that can be folded and disposed on the bottom side of the stool. The stool is used for a person to sit upright. The chair assembly includes a chair frame that can be detachably installed on the upper side of the stool and a chair cover installed on the chair frame. The chair cover is used for a person to lean against and sit.

[0006] When the support legs are extended and the seat assembly is installed on the stool, the folding chair switches to a high-legged recliner mode.

[0007] When the support legs are folded and stored, and the seat assembly is installed on the stool, the folding chair switches to a low-leg recliner mode.

[0008] When the support legs are extended and the seat assembly is removed from the stool, the folding chair switches to the high stool mode.

[0009] Preferably, a stool cover is installed on the stool seat. The stool cover includes a seat cushion and a stool storage bag attached to the bottom side of the seat cushion. The stool storage bag is used to store the disassembled seat assembly.

[0010] Preferably, the stool includes four connectors, two transverse support tubes and two longitudinal support tubes. The four connectors include two front connectors located on the left and right sides at the front and two rear connectors located on the left and right sides at the rear. The two transverse support tubes are respectively connected between the two front connectors and between the two rear connectors, and the two longitudinal support tubes are respectively connected between the front connectors and the rear connectors on the same side.

[0011] Preferably, the longitudinal support pipe is a curved pipe structure extending front and back, and the middle part of the longitudinal support pipe is higher than the front and back ends, while the transverse support pipe is a straight pipe structure extending left and right.

[0012] Preferably, the support legs include front support legs and rear support legs arranged in a front-to-back pattern. Both the front and rear support legs are U-shaped. The left and right ends of the top of the front support leg can swing back and forth and are connected to two front connectors to achieve foldability. The left and right ends of the top of the rear support leg can swing back and forth and are connected to two rear connectors to achieve foldability.

[0013] Preferably, at least one front connector and at least one rear connector are provided with a storage locking hole and an unfolding locking hole, and the front support foot and the rear support foot are provided with elastic positioning pins.

[0014] The elastic positioning pin on the front support leg engages with the unfolding locking hole on the front connector to allow the front support leg to swing downward and unfold to form a fixed support. The elastic positioning pin on the front support leg engages with the storage locking hole on the front connector to allow the front support leg to swing upward and fold into storage on the bottom side of the stool.

[0015] The elastic positioning pin on the rear support leg engages with the unfolding locking hole on the rear connector to allow the rear support leg to swing downwards and unfold to form a fixed support. The elastic positioning pin on the rear support leg engages with the storage locking hole on the rear connector to allow the rear support leg to swing upwards and fold into storage on the bottom side of the stool.

[0016] Preferably, the elastic positioning pin is a single-sided double-headed V-shaped spring pin, which includes a V-shaped spring piece and a positioning pin and an unlocking post disposed on the same side of the V-shaped spring piece. The positioning pin is closer to the extended end of the V-shaped spring piece than the unlocking post. Unlocking holes and pin holes are provided on both the front support foot and the rear support foot. The positioning pin is disposed through the pin hole, and the unlocking post is disposed through the unlocking hole. By pressing the unlocking post, the single-sided double-headed V-shaped spring pin moves inward and retracts to release the limiting engagement between the elastic positioning pin and the storage locking hole or the elastic positioning pin and the unfolding locking hole.

[0017] Preferably, the chair frame includes two front support members inserted into the left and right ends of the front side of the seat and two rear support members inserted into the left and right ends of the rear side of the seat; the front support member is a front support tube, and the rear support member includes a rear support tube, a rear connecting tube, and a rear backrest tube. The rear connecting tube is fixedly installed at the upper end of the rear support tube, and the bottom end of the rear backrest tube is detachably installed above the rear connecting tube through the rear connecting tube.

[0018] Preferably, a wall hole is provided on the side wall of the rear tube, and a V-shaped spring pin is installed inside the rear tube. One side of the V-shaped spring pin protrudes outward to form an elastic protrusion, which extends out of the wall hole and elastically squeezes and cooperates with the rear back tube.

[0019] Preferably, the chair cover includes a chair cushion and a chair frame storage bag disposed on the chair cushion. The chair frame storage bag is used to store the chair frame. The four corners of the chair cushion are respectively provided with corner pockets, and the chair cushion is installed between the four corners of the chair frame through the four corner pockets. The chair cushion includes a fabric body and a breathable mesh surface disposed on the fabric body.

[0020] This utility model has the following beneficial effects:

[0021] This utility model's multifunctional folding chair has four functional states: fully folded, and three different unfolded forms: a high-legged recliner, a low-legged recliner, and a high stool. When unfolded, it can be switched between these states depending on the usage scenario, making it suitable for various indoor and outdoor uses. It occupies a small volume when unfolded, offering higher comfort, practicality, and stability. When not in use, it can be folded for storage. The stool assembly uses a plate-type folding method, while the chair assembly uses a bundle-type folding method. This combines the advantages of existing bundle-type and plate-type folding chairs while eliminating their disadvantages. It breaks through the single structure and appearance of existing plate-type folding chairs, combining the advantages of both for a more novel and aesthetically pleasing look. The folding structure and process are simple, making installation and folding quick and easy. When folded, it occupies a small volume, is lightweight, and is easy to carry. Attached Figure Description

[0022] Figure 1 This is a perspective view of an embodiment of the present invention in a high-legged reclining chair position.

[0023] Figure 2 This is a side view of an embodiment of the present invention in a high-legged recliner position.

[0024] Figure 3 This is a top view of an embodiment of the present invention in a high-legged reclining chair position.

[0025] Figure 4This is a front view of an embodiment of the present invention in a high-legged recliner position.

[0026] Figure 5 This is a schematic diagram of the structure of the present invention in the high-legged recliner position after the stool cover and chair cover are hidden.

[0027] Figure 6 This is a perspective view of an embodiment of the present invention in a low-legged reclining chair position.

[0028] Figure 7 This is a schematic diagram of the structure of the embodiment of the present invention in the low-leg recliner state after the stool cover and chair cover are hidden.

[0029] Figure 8 This is a perspective view of an embodiment of the present invention in the form of a high stool.

[0030] Figure 9 This is a perspective view of an embodiment of the present invention in its high stool state with the stool cover and chair cover hidden.

[0031] Figure 10 This is a perspective view of an embodiment of the present invention in its fully folded state.

[0032] Figure 11 This is a perspective view of an embodiment of the present invention with the stool cover and chair cover hidden in a fully folded state.

[0033] Figure 12 This is a partial disassembled view of the stool assembly according to an embodiment of the present invention.

[0034] Figure 13 This is a schematic diagram of the structure of the elastic positioning pin according to an embodiment of the present invention.

[0035] Figure 14 This is a schematic diagram of the structure of the V-shaped spring pin according to an embodiment of the present invention.

[0036] Figure 15 This is a schematic diagram of the front support foot of an embodiment of the present invention.

[0037] Figure 16 This is a schematic diagram of the structure of the rear support foot in an embodiment of this utility model.

[0038] Figure 17 This is a structural schematic diagram of the front connector of an embodiment of the present invention.

[0039] Figure 18 This is a schematic diagram of the structure of the rear connector according to an embodiment of the present invention.

[0040] Figure 19 This is a schematic diagram of the structure of the foot pad according to an embodiment of the present invention.

[0041] Attached diagram labels: 1 Stool assembly, 11 Stool, 111 Front connector, 112 Rear connector, 113 Horizontal support tube, 114 Vertical support tube, 12 Support leg, 121 Front support leg, 122 Rear support leg, 13 Stool cover, 131 Seat cushion, 132 Stool storage bag, 14 Foot pad, 2 Chair assembly, 21 Chair frame, 211 Front support tube, 212 Rear support tube, 213 Rear support tube, 214 Rear backrest tube, 22 Chair cover, 221 Chair cushion, 2211 Fabric cushion body, 2212 Breathable mesh surface, 222 Chair frame storage bag, 223 Corner pocket, 3 Storage locking hole, 4 Unfolding locking hole, 5 Unlocking hole, 6 Pin hole, 7 Elastic positioning pin, 71 V-shaped spring, 72 Positioning pin, 73 Unlocking post, 8 Button head, 9 V-shaped spring pin, 91 Elastic protrusion, 10 Tube plug. Detailed Implementation

[0042] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0043] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] See Figure 1-19As shown, as an embodiment of the present utility model, a multifunctional folding chair is provided, including a stool assembly 1 and a chair assembly 2. The stool assembly 1 includes a stool 11 and a support leg 12 that can be folded and disposed on the bottom side of the stool 11. The stool 11 is used for a person to sit upright. The chair assembly 2 includes a chair frame 21 that can be detachably installed on the upper side of the stool 11 and a chair cover 22 installed on the chair frame 21. The chair cover 22 is used for a person to lean against and sit.

[0046] See Figure 1-4 As shown, when the support leg 12 is extended and the seat assembly 2 is installed on the stool seat 11, the folding chair switches to a high-legged recliner state, thus serving as an outdoor leisure chair suitable for most outdoor use scenarios.

[0047] See Figure 6 As shown, when the support leg 12 is folded and stored, and the seat assembly 2 is installed on the stool seat 11, the folding chair switches to a low-leg recliner state, so that it can be used as a leisure chair, fishing chair or beach chair, suitable for use in leisure venues, fishing venues or beach venues and other usage scenarios.

[0048] See Figure 8 As shown, when the support leg 12 is extended and the seat assembly 2 is removed from the stool 11, the folding chair switches to a high stool state for people to sit upright, thus it can be used as a grandstand stool or carriage stool, suitable for use in relatively small spaces such as tiered grandstands or the interior of train or bullet train carriages.

[0049] See Figure 10 As shown, when the support leg 12 is folded and stored, and the seat assembly 2 is removed from the stool 11, the folding chair switches to a fully folded state.

[0050] This utility model's multifunctional folding chair has four functional states: fully folded, and three different unfolded forms: a high-legged recliner, a low-legged recliner, and a high stool. When unfolded, it can be switched between these states depending on the usage scenario. It occupies a small volume when unfolded, making it suitable for various indoor and outdoor use scenarios, offering higher comfort, practicality, and better stability and reliability. When not in use, it can be folded for storage. The stool assembly 1 uses a plate-type folding method, while the chair assembly 2 uses a bundle-type folding method. This combines the advantages of existing bundle-type and plate-type folding chairs while eliminating their disadvantages, breaking through the single structure and appearance of existing plate-type folding chairs. Combining the advantages of both results in a more novel and aesthetically pleasing design. The folding structure and process are simple, making installation and folding quick and easy. When folded, it occupies a small volume, is lightweight, and is easy to carry.

[0051] In this embodiment, a stool cover 13 is installed on the stool 11. The stool cover 13 includes a seat cushion 131 and a stool storage bag 132 connected to the bottom side of the seat cushion 131. The stool storage bag 132 is used to store the disassembled chair seat assembly 2, thereby preventing the problem of parts being easily lost.

[0052] In this embodiment, the stool 11 includes four connectors, two transverse support tubes 113, and two longitudinal support tubes 114. The four connectors include two front connectors 111 located on the left and right sides at the front, and two rear connectors 112 located on the left and right sides at the rear. The two transverse support tubes 113 are connected between the two front connectors 111 and the two rear connectors 112 respectively by blind rivets. The two longitudinal support tubes 114 are connected between the front connectors 111 and the rear connectors 112 on the same side respectively by blind rivets, thereby forming a rectangular support structure for the stool 11, ensuring support stability. Specifically, the longitudinal support tubes 114 are curved tubes extending front and rear, with the middle of the longitudinal support tubes 114 higher than the front and rear ends. The transverse support tubes 113 are straight tubes extending left and right. The seat cushion 131 is installed between the longitudinal support tubes 114 and the transverse support tubes 113. This arrangement makes the seat cushion 131 have a structure that is higher in the middle and lower at the front and rear ends, making the user's seating more comfortable and stable.

[0053] In this embodiment, the support legs 12 include a front support leg 121 and a rear support leg 122 arranged in a front-to-back manner. Both the front support leg 121 and the rear support leg 122 are U-shaped. The top left and right ends of the front support leg 121 are connected to the two front connectors 111 by rivets to achieve folding. The top left and right ends of the rear support leg 122 are connected to the two rear connectors 112 to achieve folding. When unfolded for use, the front support leg 121 swings downward and forward relative to the stool 11, and the rear support leg 122 swings downward and backward relative to the stool 11. When folded for storage, the front support leg 121 folds upward and backward relative to the stool 11, and the rear support leg 122 folds upward and forward relative to the stool 11. This folding method is simple, convenient and quick. After folding, the front support leg 121 and the rear support leg 122 are horizontally attached to the bottom side of the stool 11 in sequence, occupying less space. Of course, in other cases, the support leg 12 can also be an X-shaped vertically retractable and folding support leg 12, and there is no restriction here.

[0054] In this embodiment, at least one front connector 111 and at least one rear connector 112 are provided with a storage locking hole 3 and an unfolding locking hole 4, and the front support leg 121 and the rear support leg 122 are provided with elastic positioning pins 7. The elastic positioning pin 7 on the front support leg 121 is engaged with the unfolding locking hole 4 on the front connector 111 to allow the front support leg 121 to swing downward and forward to unfold and form a fixed support. The elastic positioning pin 7 on the front support leg 121 is engaged with the storage locking hole 3 on the front connector 111 to allow the front support leg 121 to swing upward and backward to fold and store on the bottom side of the stool base 11. The elastic positioning pin 7 on the rear support leg 122 engages with the unfolding locking hole 4 on the rear connector 112 to allow the rear support leg 122 to swing downward and backward to form a fixed support. The elastic positioning pin 7 on the rear support leg 122 engages with the storage locking hole 3 on the rear connector 112 to allow the rear support leg 122 to swing upward and forward to fold and store on the bottom side of the seat 11. This arrangement ensures the limiting stability of the front support leg 121 and the rear support leg 122 in the unfolded use and in the folded storage state, preventing loosening and ensuring the safety of the user or the reliability of storage.

[0055] In this embodiment, a button head 8 is also included. The elastic positioning pin 7 is a single-sided double-headed V-shaped spring pin, which includes a V-shaped spring piece 71 and a positioning pin 72 and an unlocking post 73 disposed on the same side of the V-shaped spring piece 71. The positioning pin 72 is closer to the extended end of the V-shaped spring piece 71 than the unlocking post 73. Unlocking holes 5 and pin holes 6 are provided on both the front support foot 121 and the rear support foot 122. The positioning pin 72 is disposed through the pin hole 6, and the unlocking post 73 is disposed through the unlocking hole 5. The button head 8 and the unlocking post 73 are threadedly connected. By pressing the button head 8, the unlocking post 73 is pushed inward, causing the single-sided double-headed V-shaped spring pin to move inward and retract. The elastic positioning pin 7 is released from its limiting engagement with the storage locking hole 3 or the unfolding locking hole 4, allowing the front support leg 121 or the rear support leg 122 to swing back and forth relative to the seat 11 for folding and storage or unfolding. When the button head 8 is released and the front support leg 121 or the rear support leg 122 has swung into position, the positioning pin 72 engages with the storage locking hole 3 under the elastic force of the V-shaped spring piece 71 to limit the folding of the front support leg 121 or the rear support leg 122, and engages with the unfolding locking hole 4 to limit the unfolding of the front support leg 121 or the rear support leg 122. The locking and unlocking operation of the front support leg 121 and the rear support leg 122 is achieved by using the button head 8 in conjunction with a single-sided double-headed V-shaped spring pin, making the operation easier, more convenient, faster, more stable, and more reliable, with a high degree of integration.

[0056] In this embodiment, the chair frame 21 includes two front support members inserted into the left and right ends of the front side of the seat 11, and two rear support members inserted into the left and right ends of the rear side of the seat 11. Specifically, the front support member is a front support tube 211, and the rear support member includes a rear support tube 212, a rear connecting tube 213, and a backrest tube 214. The rear connecting tube 213 is fixedly installed on the upper end of the rear support tube 212 by welding or spot punching. The bottom end of the backrest tube 214 is detachably installed on the upper part of the rear connecting tube 213 through the rear connecting tube 213. By assembling the chair frame 21 with multiple tube structures, the comfort of sitting can be guaranteed, and the length of the multiple tubes can be more uniform, thereby making the volume occupied by the chair frame 21 after disassembly smaller.

[0057] In this embodiment, a wall hole is provided on the side wall of the rear tube 213, and a V-shaped spring pin 9 is installed inside the rear tube 213. One side of the V-shaped spring pin 9 protrudes outward to form an elastic protrusion 91. The elastic protrusion 91 passes through the wall hole and elastically presses against the rear backrest tube 214, making the installation and disassembly operations more convenient and quick.

[0058] In this embodiment, the chair cover 22 includes a chair cushion 221 and a chair frame storage bag 222 disposed on the chair cushion 221. The chair frame storage bag 222 is used to store the chair frame 21. Corner pockets 223 are respectively provided at the four corners of the chair cushion 221. The chair cushion 221 is installed between the four corners of the chair frame 21 through the four corner pockets 223, thereby improving the installation and seating reliability of the chair cushion 221. The chair cushion 221 includes a fabric body 2211 and a breathable mesh surface 2212 disposed on the fabric body 2211. The breathable mesh surface 2212 is located on the back and left and right sides of the fabric body 2211, making the chair cushion 221 more ventilated and breathable, thereby improving seating comfort.

[0059] In this embodiment, the front support tube 211, the rear support tube 212, and the rear backrest tube 214 are fitted with tube plugs 10 by interference fit. Foot pads 14 are installed at the left and right ends of the bottom of the front support foot 121 and the rear support foot 122 to ensure support stability.

[0060] In summary, the multifunctional folding chair of this utility model has the following four functional states:

[0061] 1. High-legged recliner position: Swing the front support leg 121 downward and forward relative to the seat 11, and swing the rear support leg 122 downward and backward relative to the seat 11, so that the front support leg 121 and the rear support leg 122 form a stable support with the ground. Then, insert the two front support pieces into the left and right ends of the front side of the seat 11, and insert the two rear support pieces into the left and right ends of the rear side of the seat 11. Install the seat cover 13 onto the seat 11 and the chair cover 22 onto the chair frame 21. At this time, the folding chair is in the fully unfolded high-legged recliner position, and can be used as an outdoor leisure chair, suitable for most outdoor usage scenarios.

[0062] 2. Low-legged recliner position: Based on the high-legged recliner position, the front support leg 121 is folded and stored upwards and backwards relative to the seat 11, and the rear support leg 122 is folded and stored upwards and forwards relative to the seat 11, so that the front support leg 121 and the rear support leg 122 are horizontally abutting the bottom side of the seat 11. At this time, the chair is in the low-legged recliner position, which can be used as a leisure chair, fishing chair or beach chair, suitable for leisure venues, fishing venues, beach venues and other usage scenarios.

[0063] 3. High stool mode: Based on the high stool mode, fold the chair frame 21 and chair cover 22 and put them into the chair frame storage bag 222. Then put the folded chair frame storage bag 222 into the stool storage bag 132. At this time, the folding chair is in the high stool mode, which is used for people to sit upright. It can be used as a grandstand stool or carriage stool, which is suitable for use in relatively small spaces such as tiered grandstands or the interior of train or bullet train carriages.

[0064] 4. Fully folded state: From the high stool position, swing the front support leg 121 upward and backward relative to the stool base 11 to fold and store it, and swing the rear support leg 122 upward and forward relative to the stool base 11 to fold and store it. At this time, the folding chair is in the fully folded state.

[0065] This multifunctional folding chair has a complete structure and functions, with multiple usage modes, and can be used in a variety of scenarios. It has a simple structure, is easy and quick to install, use, or fold, and takes up little space when unfolded or folded, making it aesthetically pleasing.

[0066] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that any changes in form and detail made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims fall within the protection scope of the present invention.

Claims

1. A multi-functional folding chair, characterized by: The invention includes a stool assembly and a chair assembly. The stool assembly includes a stool and a foldable support leg disposed on the bottom side of the stool. The stool is used for a person to sit upright. The chair assembly includes a chair frame detachably mounted on the upper side of the stool and a chair cover mounted on the chair frame. The chair cover is used for a person to lean against and sit. When the support legs are extended and the seat assembly is installed on the stool, the folding chair switches to a high-legged recliner mode. When the support legs are folded and stored, and the seat assembly is installed on the stool, the folding chair switches to a low-leg recliner mode. When the support legs are extended and the seat assembly is removed from the stool, the folding chair switches to the high stool mode.

2. The multi-functional folding chair of claim 1, wherein: The stool is fitted with a stool cover, which includes a seat cushion and a stool storage bag attached to the bottom of the seat cushion. The stool storage bag is used to store the disassembled seat components.

3. The multi-functional folding chair of claim 1, wherein: The stool base includes four connectors, two transverse support tubes and two longitudinal support tubes. The four connectors include two front connectors located on the left and right sides at the front and two rear connectors located on the left and right sides at the rear. The two transverse support tubes are respectively connected between the two front connectors and between the two rear connectors, and the two longitudinal support tubes are respectively connected between the front connectors and the rear connectors on the same side.

4. The multi-functional folding chair of claim 3, wherein: The longitudinal support pipe is a curved pipe structure extending front and back, with the middle part of the longitudinal support pipe higher than the front and back ends, while the transverse support pipe is a straight pipe structure extending left and right.

5. The multi-functional folding chair of claim 3, wherein: The support legs include front support legs and rear support legs arranged in a front-to-back pattern. Both the front and rear support legs are U-shaped. The top left and right ends of the front support legs can swing back and forth and are connected to two front connectors to achieve folding. The top left and right ends of the rear support legs can swing back and forth and are connected to two rear connectors to achieve folding.

6. The multi-functional folding chair of claim 5, wherein: At least one front connector and at least one rear connector are provided with a storage locking hole and an unfolding locking hole, and the front support foot and the rear support foot are provided with elastic positioning pins. The elastic positioning pin on the front support leg engages with the unfolding locking hole on the front connector to allow the front support leg to swing downward and unfold to form a fixed support. The elastic positioning pin on the front support leg engages with the storage locking hole on the front connector to allow the front support leg to swing upward and fold into storage on the bottom side of the stool. The elastic positioning pin on the rear support leg engages with the unfolding locking hole on the rear connector to allow the rear support leg to swing downwards and unfold to form a fixed support. The elastic positioning pin on the rear support leg engages with the storage locking hole on the rear connector to allow the rear support leg to swing upwards and fold into storage on the bottom side of the stool.

7. The multifunctional folding chair according to claim 6, characterized in that: The elastic positioning pin is a single-sided double-headed V-shaped spring pin, which includes a V-shaped spring piece and a positioning pin and an unlocking post set on the same side of the V-shaped spring piece. The positioning pin is closer to the extended end of the V-shaped spring piece than the unlocking post. Unlocking holes and pin holes are opened on both the front support foot and the rear support foot. The positioning pin is inserted through the pin hole, and the unlocking post is inserted through the unlocking hole. By pressing the unlocking post, the single-sided double-headed V-shaped spring pin moves inward and retracts to release the elastic positioning pin from the limiting engagement with the storage locking hole or the limiting engagement with the unfolding locking hole.

8. The multifunctional folding chair according to claim 1, characterized in that: The chair frame includes two front support members inserted into the left and right ends of the front side of the seat and two rear support members inserted into the left and right ends of the rear side of the seat. The front support member is a front support tube, and the rear support member includes a rear support tube, a rear connecting tube, and a rear backrest tube. The rear connecting tube is fixedly installed at the upper end of the rear support tube, and the bottom end of the rear backrest tube is detachably installed above the rear connecting tube through the rear connecting tube.

9. The multifunctional folding chair according to claim 8, characterized in that: A wall hole is provided on the side wall of the rear tube, and a V-shaped spring pin is installed inside the rear tube. One side of the V-shaped spring pin protrudes outward to form an elastic protrusion. The elastic protrusion passes through the wall hole and is elastically squeezed and engaged with the rear back tube.

10. The multifunctional folding chair according to claim 1, characterized in that: The chair cover includes a chair cushion and a chair frame storage bag set on the chair cushion. The chair frame storage bag is used to store the chair frame. The four corners of the chair cushion are respectively provided with corner pockets, and the chair cushion is installed between the four corners of the chair frame through the four corner pockets. The chair cushion includes a fabric body and a breathable mesh surface set on the fabric body.

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