Folding structure and folding chair, storage box frame, table

Abstract

The utility model relates to the field of folding structure, specifically disclose a folding structure and folding chair, article box frame, table, wherein, folding structure includes first rotating arm and second rotating arm, both ends rotatable of first rotating arm have first support rod, both ends rotatable of second rotating arm have second support rod. When folding structure is closed, operating first rotating arm and second rotating arm makes both rotating closing to close to each other, and the first support rod and second support rod connected with it respectively synchronously close to each other along with it;First rotating arm and second rotating arm complete closing after closing, both sides of the outer surface combination form a resting surface, and the first support rod and second support rod rotate towards the resting surface to adhere or tend to adhere to the resting surface, form the folding storage form of bundle.

Description

Technical Field

[0001] This utility model relates to the field of folding structures, and in particular to a folding structure and a folding chair, storage rack, and table. Background Technology

[0002] A folding chair typically consists of two hinged frame members, to which a front leg post, a rear leg post, a front seat post, and a backrest post are inserted. The front leg post and the front seat post are connected by an elastic cable, as are the rear leg post and the backrest post.

[0003] To facilitate the folding of the chair, the two frame components can be unfolded and folded relative to each other. The frame components generally include a rotating disc and a rotating arm. The rotating discs of the two frame components are rotatably connected. Based on the understanding of related technologies, the folding locking parts of some folding chairs are generally installed on the rotating disc. When the folding chair is folded, the various legs, seat bars and back bars connected to it may not be able to be folded or may still occupy a lot of space after being folded or folded. Similarly, storage racks and tables with folding structures also present the above-mentioned technical problems when folded. Utility Model Content

[0004] The purpose of at least one specific embodiment of this utility model is to overcome the defects of the existing technology and provide a folding structure and a folding chair.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A folding structure, comprising: The first rotating assembly includes a first rotating disk and a first rotating arm connected thereto; The second rotating assembly includes a second rotating disk and a second rotating arm connected thereto; A rotating shaft connects the first rotating disk and the second rotating disk to enable their relative rotation. The folding structure also includes: A first support rod is rotatably mounted to the end of the first rotating arm; The second support rod is rotatably mounted on the end of the second rotating arm; Operate the first rotating arm and the second rotating arm to rotate them toward each other and retract them to bring them closer together; the first support rod and the second support rod connected to them will then move toward each other synchronously. When the first rotating arm and the second rotating arm are retracted and brought together, their outer surfaces on the same side combine to form a resting surface. The first support rod and the second support rod rotate toward the resting surface to fit or tend to fit onto the resting surface, forming a bundled folded storage shape.

[0006] Furthermore, the upper surfaces of the first rotating arm and the second rotating arm are coplanar, and the upper surfaces are parallel to the rotation planes of the first rotating arm and the second rotating arm.

[0007] Furthermore, a first flexible elastic element is disposed between the first support rod and the first rotating arm, the first elastic element being in a stretched energy storage state when the first support rod is folded; and / or; A second flexible element is disposed between the second support rod and the second rotating arm. The second flexible element is in a stretched energy storage state when the second support rod is folded.

[0008] Furthermore, the first support rod and / or the second support rod are adapted to automatically flip to the unfolded position when the external constraints are released.

[0009] Furthermore, the ends of the first rotating arm and the second rotating arm are respectively provided with insertion parts; The ends of the first support rod and the second support rod are respectively provided with insertion ends; The insertion end is adapted to be inserted into the insertion interface of the plug-in part, and is adapted to overcome the tension of the elastic element and separate from the insertion interface under the action of external force.

[0010] Furthermore, the plug-in part and the insertion end are rotatably connected through a pivot and a guide groove, wherein: the pivot and the guide groove are slidably engaged and the two are always connected; The extension direction of the guide groove is consistent with the insertion direction of the insertion end into the connector; the connector is provided with a clearance opening to provide rotation clearance space when the insertion end is pulled out.

[0011] Furthermore, the side of the insertion portion is provided with a support guide portion, and the insertion end is provided with a sliding guide portion that cooperates with the support guide portion; wherein, when the external constraint is released: When the elastic element releases the tension, the sliding guide slides along the support guide, guiding the insertion end to align and insert into the insertion interface.

[0012] Furthermore, the first support rod includes a first front seat rod and a first rear back rod, which are located at opposite ends of the first rotating arm, respectively; The second support rod includes a second front seat rod and a second rear back rod, which are located at opposite ends of the second rotating arm, respectively. When rotating and retracting, the first front seat rod and the second front seat rod move closer together, and the first back seat rod and the second back seat rod move closer together.

[0013] Furthermore, when folded and stored, the first front seat rod and the second front seat rod are stacked on the first layer of the resting surface, and the first back rod and the second back rod are stacked on the second layer of the resting surface.

[0014] Furthermore, when the first support rod is separated from the first rotating arm, the first support rod is flexibly connected to the first rotating arm through the first elastic element; When the second support rod is separated from the second rotating arm, the second support rod is flexibly connected to the second rotating arm through the second elastic element.

[0015] The advantages of the folding structure provided in this application compared with the prior art are as follows: 1. After the rotating arm of this application is folded, the outer surface of the combination forms a virtual resting surface, which provides a unified fitting reference for the support rod. The first and second support rods automatically rotate and stack towards this plane, eliminating the traditional radial dispersion problem. Moreover, after folding, the first and second support rods fit or tend to fit the surface of the rotating arm to form a bundled folded storage shape, which reduces the volume of the entire folding structure after folding. The virtual resting surface serves as a physical guiding reference, ensuring that the folding trajectory of the support rod converges in the area above and below the rotating arm, and the folding of the first and second support rods is natural.

[0016] Another technical solution adopted in this application is: providing a folding chair, comprising: The aforementioned folding structure; The first front foot rod, the first rear foot rod, the first front seat rod, and the first back rod are respectively inserted into the first rotating arm; The second front foot rod, the second rear foot rod, the second front seat rod, and the second back rod are respectively inserted into the second rotating arm; The seat back is supported at its four corners by the first front seat post, the second front seat post, the first backrest post, and the second backrest post, respectively.

[0017] Furthermore, the first support rod includes the first front leg rod, the first rear leg rod, the first front seat rod, and the first backrest rod; The second support rod includes the second front leg rod, the second rear leg rod, the second front seat rod, and the second backrest rod.

[0018] With the above technical solution, after the folding chair adopts the above folding structure, when the folding chair is folded, the first and second support rods after folding are attached to or tend to be attached to the surface of the rotating arm to form a bundle-like folding and storage shape, which reduces the overall volume of the folding chair after folding.

[0019] Another technical solution adopted in this application is: providing a storage box rack, including: The aforementioned folding structure; Support feet are respectively inserted into the first rotating arm and the second rotating arm; Support blocks are provided on the surfaces of the first rotating arm and the second rotating arm; The support block is suitable for placing the storage box, and the surface of the support block has a friction surface, which can play a role in preventing slippage when the storage box is placed on it.

[0020] Furthermore, the first support rod and the second support rod are configured as the support feet.

[0021] With the above technical solution, the storage rack can be folded and unfolded during use. When folded, the folded support legs fit or tend to fit the surface of the rotating arm to form a bundle-like folded storage shape, reducing the overall volume of the storage rack after folding.

[0022] Another technical solution adopted in this application is: providing a table, comprising: The aforementioned folding structure; The lower support foot and upper support rod are respectively inserted into the first rotating arm and the second rotating arm; Support assembly connected to the upper support rod; The tabletop unit is positioned above the support assembly.

[0023] Furthermore, the support component includes: A connector, adapted to be inserted into the end of the upper support rod; The lower snap plate is installed on the connector; The tabletop support rod is fastened to the lower buckle plate.

[0024] Furthermore, the bottom of the tabletop unit is provided with an upper buckle plate, the tabletop support rod is supported at the bottom of the tabletop unit, and the upper buckle plate and the lower buckle plate are respectively fastened and connected to the tabletop support rod.

[0025] Furthermore, both the first support rod and the second support rod are configured as the lower support foot and the upper support rod, respectively.

[0026] Through the above technical solution, the table is composed of a detachable tabletop unit, a support component, a folding structure, a lower support leg, and an upper support rod. The folding structure constitutes the main support frame of the table. When the table is folded, the lower support leg and upper support rod are attached to or tend to be attached to the surface of the rotating arm to form a bundle-like folded storage shape, which reduces the overall volume of the table after folding. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the folding structure in the unfolded state in Embodiment 1 of this utility model; Figure 2 This is a schematic diagram of the folding structure in a semi-folded state in Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the folding structure in the fully folded state in Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the easily deployable structure in Embodiment 1 of this utility model; Figure 5 This is an assembly diagram of the easily deployable structure in Embodiment 1 of this utility model; Figure 6 This is a schematic diagram of the easily extendable support rod in Embodiment 1 of this utility model when it is pulled out; Figure 7 This is a schematic diagram of the support rod of the easily deployable structure in Embodiment 1 of this utility model when it is folded. Figure 8 This is a schematic diagram of the unfolded state of the first rotating component and the second rotating component in Embodiment 1 of this utility model; Figure 9 This is a schematic diagram of the retracted state of the first rotating component and the second rotating component in Embodiment 1 of this utility model; Figure 10 This is an exploded schematic diagram of the first rotating assembly and the second rotating assembly; Figure 11 This is a top view of the first rotating assembly and the second rotating assembly; Figure 12 for Figure 11 Schematic diagram of the cross section along line AA; Figure 13 for Figure 9 An explosion diagram; Figure 14 for Figure 13 Another angle of the explosion diagram; Figure 15 This is a partial cross-sectional schematic diagram of the first and second rotating components after they have been retracted. Figure 16 This is a diagram illustrating the forces acting on the folding structure during folding in Embodiment 1 of this utility model. Figure 17 This is a schematic diagram of the folding structure in the unfolded state in Embodiment 2 of this utility model; Figure 18 This is a schematic diagram of the folding structure in the folded state in Embodiment 2 of this utility model; Figure 19 for Figure 17 Another structural diagram from a different angle; Figure 20 for Figure 17 An explosion diagram; Figure 21 for Figure 17 A top-down view; Figure 22 for Figure 21 Schematic diagram of the cross section along line BB; Figure 23 for Figure 18 An explosion diagram; Figure 24 for Figure 18 Another angle of the explosion diagram; Figure 25 This is a partial cross-sectional schematic diagram of the folded structure after being folded in Embodiment 2 of this utility model; Figure 26 This is a diagram illustrating the forces acting on the folding structure during folding in Embodiment 2 of this utility model; Figure 27 This is a schematic diagram of the folding structure in the unfolded state in Embodiment 3 of this utility model; Figure 28 This is a schematic diagram of the folding structure in the fully folded state in Embodiment 3 of this utility model; Figure 29 This is a schematic diagram of the easily deployable structure in Embodiment 3 of this utility model; Figure 30 This is a structural schematic diagram of the frame component in Embodiment 3 of this utility model; Figure 31 This is a schematic diagram of the easily extendable structure when the support rod is pulled out in Embodiment 3 of this utility model; Figure 32 This is a schematic diagram of the easily unfoldable structure of the support rod when folded in Embodiment 3 of this utility model; Figure 33 This is a cross-sectional schematic diagram of the easily deployable structure in Embodiment 3 of this utility model; Figure 34 This is a schematic diagram of the structure of the folding chair in Embodiment 4 of this utility model; Figure 35 This is a schematic diagram of the frame structure of the folding chair in Embodiment 4 of this utility model; Figure 36 This is a schematic diagram of the folding chair frame after it is folded up in Embodiment 4 of this utility model; Figure 37 This is a schematic diagram of the frame of the folding chair in Embodiment 4 of this utility model when it is folded and stored. Figure 38 This is a schematic diagram of the structure of Embodiment 5 of the present invention; Figure 39 This is a diagram illustrating the usage effect of Embodiment 5 of this utility model; Figure 40 This is a schematic diagram of the structure of Embodiment 6 of the present invention; Figure 41 This is a diagram illustrating the usage effect of Embodiment 6 of this utility model; Figure 42 This is a schematic diagram of the structure of Embodiment 7 of this utility model; Figure 43 This is a schematic diagram of the structure of Embodiment 7 of this utility model from another angle. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Example 1

[0030] Reference Figure 1 , Figure 2 , Figure 3 , Figure 8 A folding structure 100 includes a first frame member (or a first rotating assembly) 10, a second frame member (or a second rotating assembly) 20 rotatably connected to the first frame member 10, and a locking assembly 30 mounted on the first frame member 10 or the second frame member 20. The first frame component 10 includes a first rotating disk (or first rotating member) 101, a first rotating arm 102 fixedly connected to the first rotating disk 101, and a first connecting arm 102a disposed at the end of the first rotating arm 102. The second frame member 20 includes a second rotating disk 201, a second rotating arm 202 fixedly connected to the second rotating disk (or second rotating component) 201, and a second connecting arm 202a disposed at the end of the second rotating arm 202; The first rotating disk 101 and the second rotating disk 201 are rotatably connected by a rotating shaft, such as a pin 40. In this embodiment, support rods 320 are rotatably mounted on both ends of the first rotating arm 102 (or the first connecting arm 102a) and both ends of the second rotating arm 202 (or the second connecting arm 202a). Specifically, the first support rods 320a are rotatably mounted on both ends of the first rotating arm 102, and the second support rods 320b are rotatably mounted on both ends of the second rotating arm 202.

[0031] When the folding structure 100 is folded, the first rotating arm 102 and the second rotating arm 202 are operated to rotate towards each other and close together. The first support rod 320a and the second support rod 320b connected to them respectively then move towards each other synchronously. When the first rotating arm 102 and the second rotating arm 202 are closed and brought together, their outer surfaces on the same side combine to form a resting surface P. The first support rod 320a and the second support rod 320b rotate toward the resting surface to fit or tend to fit onto the resting surface P, forming a bundled folded storage form.

[0032] Furthermore, the upper surfaces of the first rotating arm 102 and the second rotating arm 202 are coplanar, and the upper surfaces are parallel to the rotation planes of the first rotating arm 102 and the second rotating arm 202.

[0033] Furthermore, a flexible first elastic element 100a is disposed between the first support rod 320a and the first rotating arm 102. The first elastic element 100a is in a stretched and energy-storing state when the first support rod 320a is folded. A flexible second elastic element 100b is disposed between the second support rod 320b and the second rotating arm 202. The second elastic element 100b is in a stretched and energy-storing state when the second support rod 320b is folded. When the first support rod 320a is separated from the first rotating arm 102, the first support rod 320a is flexibly connected to the first rotating arm 102 through the first elastic element 100a. When the second support rod 320b is separated from the second rotating arm 202, the second support rod 320b is flexibly connected to the second rotating arm 202 through the second elastic member 100b.

[0034] After the support rods are folded and folded, the first support rod 320a and the second support rod 320b are folded and attached to the surfaces of the first rotating arm 102 and the second rotating arm 202 to form a stored state. Their exteriors can be bound and fixed by constraint straps to form a stable bundle. After the rotating arm is folded, the outer surface of the rotating arm forms a virtual resting surface P, which provides a unified fitting reference for the support rods. The first and second support rods automatically rotate and stack towards this plane, eliminating the traditional radial dispersion problem. Moreover, after folding and folding, the first and second support rods are attached to or tend to be attached to the surface of the rotating arm to form a bundled folded storage form, which reduces the volume of the entire folded structure after folding.

[0035] The retraction actions of the first rotating arm 102 and the second rotating arm 202 synchronously drive the first support rod 320a and the second support rod 320b to move towards each other. The virtual resting surface P serves as a physical guiding reference, ensuring that the folding trajectory of the support rods converges in the area above and below the first rotating arm 102 and the second rotating arm 202, and the folding and retraction of the first support rod 320a and the second support rod 320b are natural.

[0036] When the restraints are released, the first support rod 320a will automatically flip to the unfolded position under the tension of the first elastic element 100a. Similarly, the second support rod 320b will automatically flip to the unfolded position under the tension of the second elastic element 100b.

[0037] Furthermore, refer to Figures 4 to 7 To improve the accuracy of the first support rod 320a and the second support rod 320b when they are automatically flipped to the unfolded position and inserted into the first rotating arm 102 and the second rotating arm 202, an easy-to-unfold structure 300 is provided at the ends of the first support rod 320a and the first rotating arm 102, and at the ends of the second support rod 320b and the second rotating arm 202. The easy-to-unfold structure 300 includes a support rod 320 that can be rotatably mounted on the mounting body 310. The mounting body 310 is provided with an insertion part 3101, and one end of the support rod 320 is an insertion end 3201, which is adapted to be inserted into the insertion part 3101.

[0038] It should be noted that in this embodiment, the mounting body 310 is constructed as the first connecting arm 102a or the second connecting arm 202a described above.

[0039] Furthermore, one of the insertion portion 3101 and the insertion end 3201 is provided with a pivot 330, and the other of the insertion portion 3101 and the insertion end 3201 is provided with a guide groove 340 corresponding to the pivot 330. The pivot 330 and the guide groove 340 are slidably engaged. The insertion direction of the support rod 320 relative to the insertion portion 3101 is consistent with the extension direction of the guide groove 340. When the insertion end 3201 of the support rod 320 is pulled out from the insertion portion 3101, the support rod 320 can rotate relative to the mounting body 310, thereby forming a folded state. After the support rod 320 is pulled out from the mounting body 310, it changes to the folded state, or the support rod 320 gradually rotates from the folded state to the unfolded state. During this process, the pivot 330 and the guide groove 340, which are slidably engaged with each other, always keep the support rod 320 and the mounting body 310 rotatably connected. During this process, the support rod 320 and the mounting body 310 do not separate. When the pivot 330 slides relative to the guide groove 340, it indicates that the distance between the insertion end 3201 of the support rod 320 and the insertion part 3101 of the mounting body 310 changes, so that the support rod 320 can be folded or unfolded relative to the mounting body 310. However, the central axis of the insertion part 3101 and the central axis of the insertion end 3201 are in the same plane. When the central axis of the insertion part 3101 and the central axis of the insertion end 3201 form an angle, it indicates that the support rod 320 is in a folded state. When the central axis of the insertion part 3101 and the central axis of the insertion end 3201 are on the same straight line, it indicates that the support rod 320 is in an unfolded state. Since the central axis of the insertion part 3101 and the central axis of the insertion end 3201 are in the same plane, when the support rod 320 changes from a folded state to an unfolded state, the insertion end 3201 and the insertion part 3101 can be automatically aligned, and the support rod 320 unfolds smoothly.

[0040] In this embodiment, the pivot 330 is mounted on the insertion part 3101, and the guide groove 340 is provided on the insertion end 3201. One end of the guide groove 340 is the first limiting end 3401, and the other end is the second limiting end 3402. The guide groove 340 has a first assembly position and a second assembly position relative to the pivot 330. When the support rod 320 is in the first assembly state (expanded state), the insertion end 3201 is inserted into the insertion part 3101, and the pivot 330 slides to the first assembly position. At this time, the pivot 330 slides to the first limiting end 3401. When the pivot 330 slides to the second assembly position, the pivot 330 slides to the second limiting end 3402, and the insertion end 3201 can rotate in the first direction relative to the insertion part 3101 through the pivot 330, and the support rod 320 is in the second assembly state (folded state). When the support rod 320 changes from a folded state to an unfolded state, the insertion end 3201 can rotate in a second direction relative to the insertion part 3101 via the pivot 330. The pivot 330 provides docking guidance for the insertion end 3201 to be inserted into the insertion part 3101 along the sliding path of the guide groove 340.

[0041] The insertion part 3101 is provided with a clearance opening 3102. When the support rod 320 rotates from the unfolded state to the folded state or from the folded state to the unfolded state, the clearance opening 3102 provides rotation clearance space for the insertion end 3201. Specifically, there are two clearance openings 3102 on the plug-in part 3101. The two clearance openings 3102 are asymmetrical. The depth of the clearance opening 3102 on the side closer to the mounting body 310 is greater than the depth of the clearance opening on the side away from the mounting body 310, so as to limit the first direction as the rotation direction towards the mounting body 310 and the second direction as the rotation direction away from the mounting body 310. After the first direction is defined by the clearance 3102, when the support rod 320 rotates in the first direction and is in the second assembly state (folded state), the support rod 320 tends to fit against the surface of the mounting body 310 to form a bundle.

[0042] In addition, the deeper clearance opening 3102 on the side closer to the mounting body 310 provides a larger rotation clearance space for the support rod 320, allowing for a larger folding angle. Conversely, if the support rod 320 rotates away from the mounting body 310, the shallower clearance opening cannot provide a larger clearance space, resulting in a smaller folding angle. This helps prevent mistaken identity, allowing the user to intuitively understand that the rotation and folding direction of the support rod 320 is towards the mounting body 310. Furthermore, after folding, the support rod 320 fits against the surface of the mounting body 310, forming a bundle. When there are multiple support rods 320, all of them can be folded and fitted against the surface of the mounting body 310, reducing the overall volume of the structure after folding and facilitating binding and restraint.

[0043] When the pivot 330 slides to the first limiting end 3401 of the guide groove 340, the support rod 320 is in the first assembly state. At this time, the insertion end 3201 of the support rod 320 extends into the insertion part 3101, and the support rod 320 stops relative to the insertion part 3101. Specifically, in this state, the pivot 330 limits the support rod 320, and the support rod 320 cannot extend further into the insertion part 3101 when it is under force. At the same time, the support rod 320 cannot rotate relative to the insertion part 3101, thereby achieving a high-strength support effect after unfolding. When the pivot 330 slides to the second limiting end 3402 of the guide groove 340, the support rod 320 is in the second assembly state. The insertion end 3201 of the support rod 320 is pulled out from the insertion part 3101. The insertion end 3201 can rotate around the pivot 330 in the clearance space provided by the clearance opening 3102. The support rod 320 can rotate relative to the mounting body 310 until the circumferential surface of the support rod 320 contacts the bottom surface of the clearance opening 3102. At this point, the support rod 320 is in a folded state relative to the mounting body 310.

[0044] Furthermore, in this embodiment, the distance L1 between the center of the pivot 330 and the bottom of the clearance opening 3102 is smaller than the length L2 of the guide groove 340. The advantage of this design is that when the insertion end 3201 of the support rod 320 is fully inserted into the insertion portion 3101, the pivot 330 is located at the first limiting end 3401 of the guide groove 340. When the insertion end 3201 of the support rod 320 is fully withdrawn from the insertion portion 3101, the pivot 330 is located at the first limiting end 3401 of the guide groove 340. At the second limiting end 3402, when L2 is greater than L1, after the insertion end 3201 of the support rod 320 is completely pulled out from the insertion part 3101, the pivot 330 reaches the second limiting end 3402, and the end face of the insertion end 3201 completely exits the insertion part 3101 and enters the clearance space. At this time, the end face of the insertion end 3201 can be located in the space where the clearance opening 3102 is located. Under this condition, the insertion end 3201 can rotate in the space provided by the clearance opening 3102 with the pivot 330 as the center.

[0045] Furthermore, in this embodiment, the number of insertion parts 3101 on the mounting body 310 is two or more, and the number of support rods 320 inserted into the mounting body 310 is two or more, making it convenient to insert multiple support rods 320 into the mounting body 310.

[0046] An elastic element 350 is disposed between the support rod 320 and the mounting body 310. The elastic element 350 is preferably a cable. One end of the elastic element 350 extends into and is connected to a support rod 320, and the other end of the elastic element 350 extends into the interior of the mounting body 310 and extends into and is connected to another support rod 320. The elastic element 350 is the first elastic element 100a and the second elastic element 100b mentioned above.

[0047] Specifically, a snap cap 360 is typically installed at the end of the support rod 320. The end of the elastic element 350 extends into the support rod 320 and connects to the snap cap 360. Taking two support rods 320 installed on the mounting body 310 as an example, after the elastic element 350 is installed between the two support rods 320, both ends of the elastic element 350 exert a pulling effect on the two support rods 320 respectively. Even when the support rod 320 is not inserted into the mounting body 310, the support rod 320 will still be pulled by the elastic element 350. When the support rod 320 is inserted into the insertion part 3101, the elastic element 350 is in a natural or tensile state. In the extended state, when the support rod 320 is in a folded state relative to the mounting body 310, the elastic element 350 is in a state of elastic tension. When the support rod 320 changes from the folded state to the unfolded state, under the elastic tension of the elastic element 350, the insertion end 3201 of the support rod 320 will automatically insert into the insertion part 3101. This easy-to-unfold structure, through the cooperation of the pivot 330 and the guide groove 340, and the structural design of the elastic element 350, allows the support rod 320 to achieve automatic alignment and automatic insertion with the insertion part 3101 when it is in the folded state and its external constraints are released.

[0048] In summary, a flexible elastic element 350 is provided between the support rod 320 and the frame component. The elastic element 350 is in a tensile energy storage state when the support rod 320 is folded. When the external constraint is released: the contraction force of the elastic element 350 drives the support rod 320 to rotate around the pivot 330, so that the central axis of the insertion end 3201 and the central axis of the insertion part 3101 are automatically aligned to the same axis; the axial force of the elastic element 350 drives the pivot 330 to slide along the guide groove 340 from the second limiting end 3402 to the first limiting end 3401, so that the insertion end 3201 is inserted into the insertion part 3101 in the insertion direction.

[0049] The following is a detailed description of this application in conjunction with the specific usage of the Easy-Extend Structure 300.

[0050] The easy-to-unfold structure 300 of this application includes a folded state and an unfolded state. In the folded state, the support rod 320 is folded relative to the mounting body 310. In the unfolded state, the support rod 320 is inserted into the insertion part 3101 of the mounting body 310. It should be noted that when the support rod 320 is in the folded state relative to the mounting body 310, the elastic element 350 is in a stretched state, which will generate a tension on the support rod 320. Therefore, the mounting body 310 will be provided with a constraint strap (not shown) to bind and fix the support rod 320.

[0051] Specifically, during the transition of the easy-to-unfold structure 300 from a folded state to an unfolded state, the support rod 320 rotates around the mounting body 310 connected to it until the insertion end 3201 is opposite to the insertion part 3101. At this time, the elastic element 350 is in a stretched state, and under the elastic tension of the elastic element 350, the insertion end 3201 of the support rod 320 is automatically inserted into the insertion part 3101.

[0052] Furthermore, when the easy-to-unfold structure 300 is in the folded state, the pivot 330 is located at the second limiting end 3402; when the easy-to-unfold structure 300 is in the unfolded state, the pivot 330 is located at the first limiting end 3401. When the easy-to-unfold structure 300 is transformed from a folded state to an unfolded state, under the elastic tension of the elastic element 350, the support rod 320 rotates around the mounting body 310 with the pivot 330 as the center until the insertion end 3201 of the support rod 320 is opposite to the insertion part 3101. At the same time, under the elastic tension of the elastic element 350, the insertion end 3201 of the support rod 320 is inserted into the insertion part 3101. During this process, the pivot 330 slides from the second limiting end 3402 to the first limiting end 3401 relative to the guide groove 340.

[0053] When the easy-to-unfold structure 300 is transformed from the unfolded state to the folded state, the pivot 330 slides from the first limiting end 3401 to the second limiting end 3402 relative to the guide groove 340, the support rod 320 rotates around the frame 310 component with the pivot 330 as the center, the elastic element 350 is in the stretched state, and the clearance opening 3102 provides the clearance space required for rotation to the insertion end 3201.

[0054] In summary, the easy-to-unfold structure 300 is used for the connection position between the support rod 320 and the mounting body 310. The insertion end 3201 of the support rod 320 and the insertion part 3101 of the mounting body 310 are rotatably connected by a pivot 330. The insertion end 3201 of the support rod 320 or the insertion part 3101 of the mounting body 310 is provided with a guide groove 340 that slides with the pivot 330. Moreover, the insertion part 3101 is provided with a clearance opening 3102. When the pivot 330 slides to the second limiting end 3401 of the guide groove 340, the support rod 320 rotates with the pivot 330 as the center and is in a folded state. The clearance opening 3102 provides the insertion end 3201 with the clearance space required to rotate out of the insertion part 3101. The support rod 320 in the folded state is in a rotatable connection with the insertion part 3101, but is not separated. When the support rod 320 needs to be extended, it rotates in the opposite direction to the insertion part 3101 around the pivot 330. When the insertion end 3201 of the support rod 320 is opposite to the insertion part 3101, it can be inserted into the insertion part 3101. At this time, the pivot 330 slides to the first limiting end 3401 of the guide groove 340, and the pivot 330 limits the support rod 320. When the support rod 320 is under force, it cannot extend further into the insertion part 3101, and at the same time, the support rod 320 cannot be opposite to the insertion part 3101. The insertion part 3101 rotates, thereby achieving a high-strength support effect after unfolding. After the easy-to-unfold structure is used, during the transition of the support rod 320 from the folded state to the unfolded state, there is no need for manual docking between the insertion end 3201 of the support rod 320 and the insertion part 3101 of the mounting body 310. Through the cooperation of the pivot 330 and the guide groove 340, after the support rod 320 is unfolded, its insertion end 3201 can automatically align with the insertion part 3101. The assembly between the support rod 320 and the mounting body 310 is convenient and efficient. In addition, an elastic element 350 is provided between the support rod 320 and the mounting body 310. When the support rod 320 is in the folded state, the elastic element 350 is in the stretched state. When the support rod 320 changes from the folded state to the unfolded state, under the elastic tension of the elastic element 350, the insertion end 3201 of the support rod 320 will automatically insert into the insertion part 3101. This easy-to-unfold structure, through the cooperation of the pivot 330 and the guide groove 340, and the structural design of the elastic element 350, allows the support rod 320 to automatically align with and insert into the insertion part 3101 when it is in the folded state and its external constraints are released.

[0055] During the folding process, the ends of the first rotating arm 102 and the second rotating arm 202 are held by one hand, resulting in even force distribution and smooth folding. Furthermore, the front leg bar 210, rear leg bar 220, front seat bar 230, and backrest bar 240, which are movably installed on the first rotating arm 102 and the second rotating arm 202, are also easy to fold. When each bar is reset, it can be automatically aligned and inserted, making the operation convenient and quick.

[0056] Additionally, refer to Figures 8 to 16 In this embodiment, the locking assembly 30 includes a locking pin 301 movably disposed in the inner cavity of the first rotating arm 102 or the second rotating arm 202, a fixing pin 302 fixedly connected to the first rotating arm 102 or the second rotating arm 202 and passing through the locking pin 301, a spring 303 sleeved on the outside of the locking pin 301 with one end connected to the fixing pin 302 and the other end abutting against the locking pin 301, a linkage pin 304 passing through the locking pin 301, and a sliding sleeve 305 sleeved on the first rotating arm 102 or the second rotating arm 202 and fixedly connected to the linkage pin 304. Among them, the sliding sleeve 305 is constructed as a trigger, which is installed on the first rotating arm 102 or the second rotating arm 202. The locking pin 301 is constructed as a locking element. Under normal circumstances, the locking element is used to limit the rotation angle of the first rotating disk 101 and the second rotating disk 201. When the trigger is activated, the locking element can be activated by the linkage pin 304 to release the locking element's restriction on the first rotating disk 101 and the second rotating disk 201. The locking pin 301 is provided with a locking limit part 306, which is close to the first rotating disk 101 and the second rotating disk 201 and can limit the rotation angle of the first rotating disk 101 and the second rotating disk 201.

[0057] Furthermore, the locking pin 301 is provided with a guide groove 307, the fixing pin 302 passes through the guide groove 307, the first rotating arm 102 or the second rotating arm 202 is provided with a sliding groove 308, and the linkage pin 304 is slidably engaged with the sliding groove 308. The guide groove 307 extends along the length direction of the locking pin 301, and the sliding groove 308 extends along the length direction of the first rotating arm 102 or the second rotating arm 202.

[0058] Furthermore, the first rotating disk 101 is provided with a first rotating contact surface 103, and the second rotating disk 201 is provided with a second rotating contact surface 203. The first rotating contact surface 103 and the second rotating contact surface 203 are opposite to each other. After the first rotating disk 101 and the second rotating disk 201 are rotatably connected by a pin 40, the first rotating contact surface 103 and the second rotating contact surface 203 can rotate relative to each other around the pin 40. The first rotating contact surface 103 is provided with a first limiting groove 104 corresponding to the locking limiting part 306, that is, a first constraint part. The second rotating contact surface... The 203 is provided with a second limiting groove 204 corresponding to the locking limiting part 306, that is, a second constraint part. The first rotating disk 101 and the second rotating disk 201 have a first position and a second position relative to each other. In the first position, the first limiting groove 104 and the second limiting groove 204 are spatially coaxial to form a circumferentially closed limiting hole (or constraint hole) 50. The locking limiting part 306 extends into the limiting hole 50 under the elastic force of the elastic member (spring 303) and forms circumferential interference with the inner wall of the limiting hole 50 to prevent the first rotating disk 101 and the second rotating disk 201 from rotating relative to each other. In the second position, the locking and limiting part 306 disengages from the limiting hole 50, the first rotating contact surface 103 and the second rotating contact surface 203 can rotate relative to each other around the pin 40, and when the locking and limiting part 306 is reset, it abuts against the outer peripheral surface of the first rotating disk 101 or the second rotating disk 201.

[0059] Specifically, when the first rotating arm 102 and the second rotating arm 202 are unfolded relative to each other, the first rotating disk 101 and the second rotating disk 201 are in a relative first position. The first limiting groove 104 and the second limiting groove 204 overlap to form a limiting hole 50, that is, the upper and lower half grooves are aligned and fitted together to form the limiting hole 50. It can be seen that the limiting hole 50 is formed by the side wall of the first limiting groove 104 and the side wall of the second limiting groove 204. At this time, the first limiting groove 104... 04 and the second limiting groove 204 are spatially coaxial, and their central axes are collinear. Under the elastic force of the spring 303, the locking limiting part 306 of the locking pin 301 extends into the limiting hole 50 and forms circumferential interference with the inner wall of the limiting hole 50. The first rotating contact surface 103 and the second rotating contact surface 203 cannot rotate relative to each other. The shape of the limiting hole 50 is adapted to the shape of the locking limiting part 306, and the diameter of the locking limiting part 306 is smaller than the diameter of the limiting hole 50. When the first rotating arm 102 and the second rotating arm 202 need to be retracted, the locking and limiting part 306 is pulled out from the limiting hole 50, the first rotating contact surface 103 and the second rotating contact surface 203 rotate relative to each other around the pin 40, the first limiting groove 104 and the second limiting groove 204 are offset from each other, and after the first rotating arm 102 and the second rotating arm 202 are retracted relative to each other, the first rotating disk 101 and the second rotating disk 201 are in a relative second position. When the locking and limiting part 306 is reset under the elastic force of the spring 303, its end abuts against the outer peripheral surface of the first rotating disk 101 or the second rotating disk 201.

[0060] Furthermore, when the locking assembly 30 is installed on the first frame member 10, the locking pin 301 and the spring 303 are installed in the internal cavity of the first rotating arm 102, and the sliding sleeve 305 is sleeved on the first rotating arm 102. After the first rotating arm 102 and the second rotating arm 202 are closed relative to each other, the first limiting groove 104 and the second limiting groove 204 are offset from each other, and the locking limiting part 306 abuts against the outer peripheral surface of the second rotating disk 201 under the elastic force of the spring 303. When the locking assembly 30 is installed on the second frame member 20, the locking pin 301 and the spring 303 are installed in the internal cavity of the second rotating arm 202, and the sliding sleeve 305 is sleeved on the second rotating arm 202. After the first rotating arm 102 and the second rotating arm 202 are closed relative to each other, the first limiting groove 104 and the second limiting groove 204 are offset from each other, and the locking limiting part 306 abuts against the outer peripheral surface of the first rotating disk 101 under the elastic force of the spring 303.

[0061] The following describes this embodiment in detail with reference to the specific state of the folding structure 100 and the folding process.

[0062] In this embodiment, the trigger (sliding sleeve 305) is installed in the end gripping area 60 of the first rotating arm 102 or the second rotating arm 202. Specifically, the trigger (sliding sleeve 305) is installed in the end gripping area 60 of the second rotating arm 202 as an example. Specifically, the trigger (sliding sleeve 305) and the locking body (locking pin 301) are disposed on the outside of the same rotating arm (such as the second rotating arm 202) and located in the end gripping area of ​​the second rotating arm 202, forming part of the gripping operation part W, so that the outer surface of the trigger (sliding sleeve 305) at least partially constitutes the gripping contact surface of the gripping operation part W. When the user holds the gripping operation unit W to rotate the first rotating arm 102 and the second rotating arm 202, the user can simultaneously perform a triggering operation on the trigger (sliding sleeve 305) while holding the second rotating arm 202 with one hand, so as to drive the locking body (locking pin 301) to release the locking of the first rotating disk 101 and the second rotating disk 201.

[0063] When the folding structure 100 is in the unfolded state, the locking member (locking pin 301) locks the first rotating disk 101 and the second rotating disk 201. When the folding structure 100 is in the folded state, the locking action of the locking member (locking pin 301) on the first rotating disk 101 and the second rotating disk 201 is released. When the folding structure 100 transitions from the unfolded state to the folded state, the user holds the gripping area 60 at one end of the first rotating arm 102 and the second rotating arm 202 respectively. After the user pulls back the trigger (sliding sleeve 305), the trigger (sliding sleeve 305) is linked to the locking member (locking pin 301) via the linkage pin 304. The locking pin 301 slides relative to the fixed pin 302 via the guide groove 307. At this time, the locking limit part 306 is pulled out from the limiting hole 50, the spring 303 is in a compressed state, and the locking action of the locking member on the first rotating disk 101 and the second rotating disk 201 is released. 01 can rotate relative to each other around the pin 40. When a person rotates the first rotating arm 102 and the second rotating arm 202 and brings them closer together, the first rotating arm 102 and the second rotating arm 202 are in close contact with each other. Whether the folding structure 100 is unfolding or folding, the person can hold the end holding area 60 of the first rotating arm 102 and the second rotating arm 202 with both hands respectively. During the entire operation, the ends of the first rotating arm 102 and the second rotating arm 202 are held by one hand. Both the first rotating arm 102 and the second rotating arm 202 can bear force, and there will be no problem of uneven force or unsmooth folding.

[0064] When the folding structure 100 is in the folded state, the first limiting groove 104 and the second limiting groove 204 are offset from each other. At this time, the limiting hole 50 is not formed. When the locking limiting part 306 is reset under the elastic force of the spring 303, the locking limiting part 306 cannot find the limiting hole 50, and its end will abut against the outer peripheral surface of the first rotating disk 101 or the second rotating disk 201. In specific design, if the locking pin 301 is set in the first rotating arm 102, when the folding structure 100 is in the folded state, the end of the locking limiting part 306 will abut against the outer peripheral surface of the second rotating disk 201. If the locking pin 301 is set in the second rotating arm 202, when the folding structure 100 is in the folded state, the end of the locking limiting part 306 will abut against the outer peripheral surface of the first rotating disk 101.

[0065] When the folding structure 100 transitions from a folded state to an unfolded state, the user holds the gripping areas 60 at one end of the first rotating arm 102 and the second rotating arm 202, respectively, and pulls the ends of the first rotating arm 102 and the second rotating arm 202 apart to the sides. At this time, the first rotating disk 101 and the second rotating disk 201 can rotate relative to each other around the pin 40 until the first limiting groove 104 and the second limiting groove 204 overlap, that is, the upper and lower half grooves are aligned and fitted together to form the limiting hole 50. Therefore, the limiting hole 50... The first limiting groove 104 and the second limiting groove 204 are enclosed by the side wall of the first limiting groove 104 and the side wall of the second limiting groove 204. At this time, the first limiting groove 104 and the second limiting groove 204 are spatially coaxial and their central axes are collinear. Under the elastic force of the spring 303, the locking limiting part 306 of the locking pin 301 automatically extends into the limiting hole 50 and forms circumferential interference with the inner wall of the limiting hole 50. The first rotating contact surface 103 and the second rotating contact surface 203 cannot rotate relative to each other, so the folding structure 100 can achieve the effect of locking after unfolding. Example 2

[0066] Reference Figures 17 to 26 The difference between this embodiment and embodiment 1 is that the structure of the locking component 40a in this embodiment is different from that in embodiment 1. In this embodiment, the locking component 40a includes a locking pin 401 movably disposed in the inner cavity of the first rotating arm 102 or the second rotating arm 202, a fixing pin 402 fixedly connected to the first rotating arm 102 or the second rotating arm 202 and passing through the locking pin 401, a spring 403 sleeved on the outside of the locking pin 401 with one end connected to the fixing pin 402 and the other end abutting against the locking pin 401, a trigger 405 hinged to the first rotating arm 102 or the second rotating arm 202 through a rotating pin 404, and a connecting buckle 406 connecting the trigger 405 and the locking pin 401. One end of the trigger 405 is hinged to the first rotating arm 102 or the second rotating arm 202 to form a hinge end 4051, and the other end of the trigger 405 extends out from the inner cavity of the first rotating arm 102 or the second rotating arm 202 to form a pressure end 4052. One end of the connecting buckle 406 is connected to the middle of the trigger 405, and the other end of the connecting buckle 406 is connected to the end of the locking pin 401.

[0067] Among them, the trigger 405 is configured as a trigger element, which is installed on the first rotating arm 102 or the second rotating arm 202; the locking pin 401 is configured as a locking element; and the connecting buckle 406 is configured as a connecting element. Under normal circumstances, the locking element is used to limit the rotation angle of the first rotating disk 101 and the second rotating disk 201. When the trigger is activated, the locking element can be linked by the connecting buckle 406 to release the locking element's restriction on the first rotating disk 101 and the second rotating disk 201. Reference Figure 14 , Figure 15 The locking pin 401 is provided with a locking limit part 407, which is close to the first rotating disk 101 and the second rotating disk 201 and can limit the rotation angle of the first rotating disk 101 and the second rotating disk 201.

[0068] In addition, to facilitate the rotation of the trigger 405, when the locking assembly 40 is installed on the first rotating arm 102, the first rotating arm 102 will have a mounting port 408, and when the locking assembly 40 is installed on the second rotating arm 202, the second rotating arm 202 will have a mounting port 408. The mounting port 408 is the space required for the trigger 405 to rotate.

[0069] Furthermore, the locking pin 401 is provided with a guide groove 409, and the fixing pin 402 passes through the guide groove 409, which extends along the length of the locking pin 401.

[0070] Furthermore, refer to Figures 16 to 19 The first rotating disk 101 is provided with a first rotating contact surface 103, and the second rotating disk 201 is provided with a second rotating contact surface 203. The first rotating contact surface 103 and the second rotating contact surface 203 are opposite to each other. After the first rotating disk 101 and the second rotating disk 201 are rotatably connected by a pin 40, the first rotating contact surface 103 and the second rotating contact surface 203 can rotate relative to each other around the pin 40. The first rotating contact surface 103 is provided with a first limiting groove 104 corresponding to the locking limiting part 407, and the second rotating contact surface 203 is provided with a second limiting groove 204 corresponding to the locking limiting part 407.

[0071] When the first rotating arm 102 and the second rotating arm 202 are unfolded relative to each other, the first limiting groove 104 and the second limiting groove 204 are spatially coaxial to form a limiting hole 50. Under the elastic force of the spring 403, the locking limiting part 407 of the locking pin 401 extends into the limiting hole 50, and the first rotating contact surface 103 and the second rotating contact surface 203 cannot rotate relative to each other. The shape of the limiting hole 50 is adapted to the shape of the locking limiting part 407, and the diameter of the locking limiting part 407 is smaller than the opening diameter of the limiting hole 50. When the first rotating arm 102 and the second rotating arm 202 are retracted relative to each other, the hand pulls the pressure end 4052 of the trigger 405. The trigger 405 rotates with the rotating pin 404 as the support point. During the rotation, the trigger 405 drives the locking pin 401 to retract through the connecting buckle 406. The locking limit part 407 at the end of the locking pin 401 is pulled out from the limiting hole 50. At this time, the limiting state of the first rotating disk 101 and the second rotating disk 201 is released. The first rotating contact surface 103 and the second rotating contact surface 203 can rotate relative to each other around the pin 40. The first limiting groove 104 and the second limiting groove 204 are offset from each other. When the locking limit part 407 is reset under the elastic force of the spring 403, its end abuts against the outer peripheral surface of the first rotating disk 101 or the second rotating disk 201.

[0072] Specifically, when the locking assembly 40 is installed on the first frame member 10, after the first rotating arm 102 and the second rotating arm 202 are retracted relative to each other, the first limiting groove 104 and the second limiting groove 204 are offset from each other, and the locking limiting part 407 abuts against the outer peripheral surface of the second rotating disk 201 under the elastic force of the spring 403. When the locking assembly 40 is installed on the second frame member 20, after the first rotating arm 102 and the second rotating arm 202 are retracted relative to each other, the first limiting groove 104 and the second limiting groove 204 are offset from each other, and the locking limiting part 407 abuts against the outer peripheral surface of the first rotating disk 101 under the elastic force of the spring 403.

[0073] The following describes this embodiment in detail with reference to the specific state of the folding structure 100 and the folding process.

[0074] Reference Figure 26 In this embodiment, the trigger (trigger 405) is installed in the end gripping area 60 of the first rotating arm 102 or the second rotating arm 202; Specifically, the trigger (trigger 405) and the locking body (locking pin 301) are disposed on the outside of the same rotating arm (such as the second rotating arm 202) and located in the end gripping area of ​​the second rotating arm 202, forming part of the gripping operation part W, so that the outer surface of the trigger (trigger 405) at least partially constitutes the gripping contact surface of the gripping operation part W. When the user holds the gripping operation unit W to rotate the first rotating arm 102 and the second rotating arm 202, the user can simultaneously perform a triggering operation on the trigger (trigger 405) while holding the second rotating arm 202 with one hand, so as to drive the locking body (locking pin 301) to release the locking of the first rotating disk 101 and the second rotating disk 201.

[0075] When the folding structure 100 is in the unfolded state, the locking member (locking pin 401) locks the first rotating disk 101 and the second rotating disk 201. When the folding structure 100 is in the folded state, the locking action of the locking member (locking pin 401) on the first rotating disk 101 and the second rotating disk 201 is released. When the folding structure 100 transitions from the unfolded state to the folded state, the user holds the gripping area 60 at one end of the first rotating arm 102 and the second rotating arm 202 respectively. After the user pulls the trigger (trigger 405), the trigger (trigger 405) is linked to the locking member (locking pin 401) through the connecting buckle 406. The locking pin 401 slides relative to the fixing pin 402 through the guide groove 409. At this time, the locking limit part 407 is pulled out from the limiting hole 50, the spring 403 is in a compressed state, and the locking action of the locking member on the first rotating disk 101 and the second rotating disk 201 is released. 1. It can rotate relative to each other around the pin 40. When a person rotates the first rotating arm 102 and the second rotating arm 202 and brings them closer together, the first rotating arm 102 and the second rotating arm 202 are in close contact with each other. Whether the folding structure 100 is unfolding or folding, the person can hold the end holding area 60 of the first rotating arm 102 and the second rotating arm 202 with both hands respectively. During the entire operation, the ends of the first rotating arm 102 and the second rotating arm 202 are held by one hand. Both the first rotating arm 102 and the second rotating arm 202 can bear force, and there will be no problem of uneven force or unsmooth folding.

[0076] When the folding structure 100 is in the folded state, the first limiting groove 104 and the second limiting groove 204 are offset from each other. At this time, the limiting hole 50 is not formed. When the locking limiting part 407 is reset under the elastic force of the spring 403, the locking limiting part 407 cannot find the limiting hole 50, and its end will abut against the outer peripheral surface of the first rotating disk 101 or the second rotating disk 201. In specific design, if the locking pin 401 is set in the first rotating arm 102, when the folding structure 100 is in the folded state, the end of the locking limiting part 407 will abut against the outer peripheral surface of the second rotating disk 201. If the locking pin 401 is set in the second rotating arm 202, when the folding structure 100 is in the folded state, the end of the locking limiting part 407 will abut against the outer peripheral surface of the first rotating disk 101.

[0077] When the folding structure 100 transitions from a folded state to an unfolded state, the user holds the gripping area 60 at one end of the first rotating arm 102 and the second rotating arm 202 respectively, and pulls the ends of the first rotating arm 102 and the second rotating arm 202 apart to the sides. At this time, the first rotating disk 101 and the second rotating disk 201 can rotate relative to each other around the pin 40 until the first limiting groove 104 and the second limiting groove 204 are spatially coaxial to form a limiting hole 50. Under the elastic force of the spring 403, the locking limiting part 407 of the locking pin 401 automatically extends into the limiting hole 50, and the first rotating contact surface 103 and the second rotating contact surface 203 cannot rotate relative to each other. The folding structure 100 can then achieve the locking effect after unfolding. Example 3

[0078] Based on the same technical concept, and referring to Figures 27 to 32 The difference between this embodiment and embodiment 1 is that the easy-to-unfold structure 300 in this embodiment is different from the easy-to-unfold structure in embodiment 1 and embodiment 2 in terms of structural design. The design difference of the easy-to-unfold structure 300 in this embodiment is that: the plug-in part 3101 is provided with a plug-in interface 3103, the side of the plug-in part 3101 is provided with a support guide part 3400, and the insertion end 3201 is provided with a sliding guide part 3202 corresponding to the support guide part 3400.

[0079] The support rod 320 has a first assembly state and a second assembly state relative to the mounting body 310. When the support rod 320 changes from the second assembly state to the first assembly state, under the pulling force of the elastic element 350, the sliding guide part 3202 slides along the support guide part 3400, guiding the insertion end 3201 to align and insert into the insertion interface 3103.

[0080] Specifically, when the support rod 320 is in the first assembly state, the support rod 320 is in an unfolded state relative to the mounting body 310; when the support rod 320 is in the second assembly state, the support rod 320 is in a folded-down state relative to the mounting body 310.

[0081] In addition, when the support rod 320 is in a folded state relative to the mounting body 310, the elastic element 350 is in a stretched state. When the support rod 320 is subjected to a binding constraint force, it remains in a folded state. When the binding constraint force disappears, the elastic element 350 drives the support rod 320 to flip. After the insertion end 3201 is aligned with and inserted into the insertion interface 3103, the support rod 320 is in an unfolded state relative to the mounting body 310.

[0082] Furthermore, refer to Figure 30 The insertion part 3101 is provided with a guide groove 3104. One end of the guide groove 3104 is connected to the insertion interface 3103. When the support rod 320 rotates relative to the insertion part 3101, it can drive the elastic element 350 to enter or exit the guide groove 3104.

[0083] The support guide portion 3400 is located on the insertion portion 3101 and faces the mounting body 310. When the support rod changes from an unfolded state to a folded state, the support rod 320 tends to fit against the surface of the mounting body 310, forming a compact folded state. Since the guide groove 3104 is located at the support guide portion 3400, whether the support rod 320 is unfolded or folded, it will drive the elastic element 350 to enter or exit the guide groove 3104. This can play a foolproof role, and the user can intuitively understand the support rod 320. The rotation and folding direction of 0 is towards the mounting body 310. Moreover, after the support rod 320 is folded, it fits against the surface of the mounting body 310 to form a bundle. In this embodiment, there are two or more insertion parts 3101 on the mounting body 310 and two or more support rods 320 inserted on the mounting body 310. When there are multiple support rods 320, all of them can be folded and fitted against the surface of the mounting body 310. This can reduce the volume of the entire structure after it is folded and facilitate binding and restraint.

[0084] Furthermore, the support guide 3400 includes a planar guide section 3400a and an arc-shaped guide section 3400b. The arc-shaped guide section 3400b is connected to the insertion interface 3103. The surface of the sliding guide 3202 is an arc-shaped surface. When the support rod 320 changes from a folded state to an unfolded state, the elastic element 350 drives the insertion end 3201 to pass through the planar guide section 3400a and the arc-shaped guide section 3400b in sequence. The insertion end 3201 flips along the trajectory of the arc-shaped guide section 3400b and is inserted into the insertion interface 3103, thereby realizing the automatic alignment and automatic insertion of the support rod 320 and the insertion part 3101 of the mounting body 310. The assembly between each support rod 320 and the mounting body 310 is convenient and efficient.

[0085] Furthermore, the elastic element 350 is preferably an elastic cable, with one end of the elastic element 350 extending into and connected to a support rod 320, and the other end of the elastic element 350 extending into the interior of the mounting body 310 and extending into and connected to another support rod 320.

[0086] In this embodiment, refer to Figure 31 , Figure 32 The easy-to-unfold structure 300 includes a folded state and an unfolded state. When the insertion end 3201 is inserted into the insertion part 3101, the support rod 320 stops relative to the insertion part 3101. At this time, the easy-to-unfold structure 300 is in the unfolded state. When the insertion end 3201 is pulled out from the insertion part 3101, the support rod 320 can rotate relative to the insertion part 3101. At this time, the easy-to-unfold structure 300 is in a folded state, and the elastic element 350 is in a stretched state. Specifically, when the easy-to-unfold structure 300 changes from the unfolded state to the folded state, the insertion end 3201 is pulled out from the insertion part 3101, and then the support rod 320 is rotated. The support rod 320 is in the folded state, and the elastic element 350 is guided into the guide groove 3104. At the same time, the elastic element 350 is in the stretched state. When the easy-to-unfold structure 300 changes from a folded state to an unfolded state, under the tension of the elastic element 350, the support rod 320 rotates toward the mounting body 310. The sliding guide portion 3202 at the end of the support rod 320 slides relative to the support guide portion 3400 until the insertion end 3201 of the support rod 320 is inserted into the insertion portion 3101. The support rod 320 is in a fully unfolded state. Since the support guide portion 3400 includes a planar guide section 3400a and an arc-shaped guide section 3400b, and the arc-shaped guide section 3400b is connected to the insertion interface 3103, during the unfolding process, the sliding guide portion 3202 at the end of the support rod 320 contacts the planar guide section 3400a and the arc-shaped guide section 3400b in sequence. The arc-shaped guide section 3400b can smoothly and continuously guide the sliding guide portion 3202 into the insertion interface 3103.

[0087] To ensure the stability and strength of the support after the support rod 320 is deployed, refer to Figure 33 The inner wall of the insertion interface 3103 is provided with a limiting step 3105. When the insertion end 3201 of the support rod 320 is inserted into the insertion part 3101, the limiting step 3105 limits the insertion stroke of the support rod 320. When the support rod 320 is subjected to pressure or support force, the support rod 320, which is limited by the limiting step 3105, cannot be further inserted into the insertion part 3101. The support rod 320 can be stably supported at the insertion part 3101, but it can be pulled out.

[0088] In summary, the easy-to-unfold structure 300 is used for the connection between the support rod 320 and the mounting body 310. Under normal circumstances, the insertion end 3201 of the support rod 320 is inserted into the insertion part 3101 of the mounting body 310, and the support rod 320 stops relative to the insertion part 3101. At this time, the easy-to-unfold structure 300 is in the unfolded state. When the easy-to-unfold structure 300 is folded, the insertion end 3201 of the support rod 320 is pulled out from the insertion part 3101, and the support rod 320 can rotate relative to the insertion part 3101. The elastic element 350 is smoothly guided from the insertion interface 3103 into the guide groove 3104 and is in a stretched state. When the easy-to-unfold structure 300 changes from the folded state to the unfolded state, the elastic element 350 returns to its original position. Under the pulling force of the elastic element 350, the sliding guide at the end of the support rod 320... The support rod 3202 contacts the support guide 3400 on the side of the mounting body 310 and slides relative to the support guide 3400 until the insertion end 3201 of the support rod 320 is inserted into the insertion interface 3103 of the insertion part 3101, thereby realizing the automatic reset of the support rod 320. After the easy-to-unfold structure is used, during the transition of the support rod 320 from the folded state to the unfolded state, there is no need for manual docking between the insertion end 3201 of the support rod 320 and the insertion part 3101 of the mounting body 310. Under the pulling force of the elastic element 350, through the sliding cooperation between the sliding guide 3202 and the support guide 3400, after the support rod 320 is unfolded, its insertion end 3201 can automatically align with the insertion part 3101. The assembly between the support rod 320 and the mounting body 310 is convenient and efficient. In addition, when the support rod 320 changes from the folded state to the unfolded state, the elastic element 350 moves from the guide groove 3104 into the insertion interface 3103 and resets. The guide groove 3104 plays a reset guiding role for the elastic element 350, ensuring the stability of the tension direction of the elastic element 350. When the support rod 320 is connected to the insertion part 3101, the connection of the support rod 320 is accurate and stable. Example 4

[0089] Reference Figures 34 to 37 Based on the same technical concept, this application provides a folding chair 200, which includes the folding structure 100 in embodiment 1, embodiment 2 or embodiment 3 above; The front leg bar 210, rear leg bar 220, front seat bar 230, and rear back bar 240 are respectively inserted into the first connecting arm 102a and the second connecting arm 202a. The first cable 250 has one end inserted into and connected to the front leg bar 210, and the other end inserted into and connected to the front seat bar 230; The second cable 260 has one end inserted into and connected to the rear foot bar 220, and the other end inserted into and connected to the rear back bar 240; The seat 270 is supported at its four corners by two front seat posts 230 and two backrest posts 240.

[0090] It should be noted that the attached drawings of the folding chair 200 in this embodiment only show the folding structure 100 in embodiment 1. After the folding chair 200 adopts the above-mentioned folding structure 100, when the entire folding chair 200 is folded and unfolded, the ends of the first rotating arm 102 and the second rotating arm 202 are respectively held by a single hand of the human body, the force is even, and the folding is smooth.

[0091] Moreover, after the front leg bar 210, rear leg bar 220, front seat bar 230 and backrest bar 240 are folded and folded, they all fit against the surfaces of the first rotating arm 102 and the second rotating arm 202 to form a bundle-like folded storage shape, which reduces the overall volume of the folding chair 200 after it is folded.

[0092] In addition, in this embodiment, the front foot rod 210, rear foot rod 220, front seat rod 230, and rear back rod 240 on the first rotating arm 102 are all connected to it through the easy-to-spread structure 300. Similarly, the front foot rod 210, rear foot rod 220, front seat rod 230, and rear back rod 240 on the second rotating arm 202 are all connected to it through the easy-to-spread structure 300 in Embodiment 1 or Embodiment 3. Example 5

[0093] Reference Figure 38 , Figure 39 Based on the same technical concept, this application provides a storage box rack 400, which includes the folding structure 100 in the above embodiment 1, embodiment 2 or embodiment 3, support feet 410 respectively inserted into the first rotating arm 102 and the second rotating arm 202, and support blocks 420 disposed on the surfaces of the first rotating arm 102 and the second rotating arm 202. The support feet 410 are connected to the first rotating arm 102 and the second rotating arm 202 through the easy-to-unfold structure 300 shown in embodiment 3. When the storage box rack 400 is in use, the storage box 430 is placed on the support block 420, and the surface of the support block 420 has a friction surface 440, which can play a role in preventing slipping when the storage box 430 is placed on it.

[0094] During use, the storage rack 400 can be folded and unfolded. It should be noted that the attached drawings of the storage rack 400 in this embodiment only show the folding structure 100 in embodiment 1. Since the first rotating arm 102 and the second rotating arm 202 adopt the design of the folding structure 100, when the storage rack 400 is folded and unfolded, the ends of the first rotating arm 102 and the second rotating arm 202 are respectively held by one hand of the human body, the force is even, and the folding is smooth. The support foot 410 can be folded and unfolded. When the external constraints are released, the support foot 410 can automatically align with and automatically insert with the insertion part of the first rotating arm 102 and the second rotating arm 202.

[0095] Meanwhile, after being folded and folded, the support leg 410 fits against the surface of the first rotating arm 102 and the second rotating arm 202 to form a bundle-like folded storage shape, reducing the overall volume of the storage box rack 400 after folding. Example 6

[0096] Reference Figure 40 , Figure 41 Based on the same technical concept, this application provides a storage box rack 400, which includes the folding structure 100 in embodiment 1, embodiment 2 or embodiment 3 above, support feet 410 respectively inserted into the first rotating arm 102 and the second rotating arm 202, and support blocks 420 disposed on the surfaces of the first rotating arm 102 and the second rotating arm 202. The support feet 410 are connected to the first rotating arm 102 and the second rotating arm 202 through the easy-to-unfold structure 300 shown in embodiment 3. When the storage rack 400 is folded up and unfolded, the ends of the first rotating arm 102 and the second rotating arm 202 are respectively held by a single hand, resulting in even force distribution and smooth folding. The support foot 410 can be folded up and unfolded. When the external constraints are released, the support foot 410 can automatically align with and insert into the insertion part of the first rotating arm 102 and the second rotating arm 202. After folding up and unfolding, the support foot 410 fits against the surface of the first rotating arm 102 and the second rotating arm 202 to form a bundle-like folded storage shape, reducing the overall volume of the storage rack 400 after folding up. Example 7

[0097] Reference Figure 42 , Figure 43 Based on the same technical concept, this application provides a table 500, which includes the folding structure 100 in the above embodiment 1, embodiment 2 or embodiment 3, a lower support leg 510 and an upper support rod 520 respectively inserted into the first rotating arm 102 and the second rotating arm 202, a support component 530 connected to the upper support rod 520, and a table board unit 540 placed above the support component 530. It should be noted that the attached drawings of the table 500 in this embodiment only show the folding structure 100 in embodiment 1.

[0098] In this embodiment, the support component 530 includes: The connector 5301 can be plugged into the end of the upper support rod 520; The lower snap plate 5302 is installed at one end of the connector 5301; The tabletop support rod 5303 is fastened to the lower snap plate 5302.

[0099] Furthermore, the bottom of the tabletop unit 540 is provided with an upper buckle plate 550. When the table is assembled, the lower support leg 510 and the upper support rod 520 are respectively inserted into the first rotating arm 102 and the second rotating arm 202. The plug connector 5301 is inserted into the end of the upper support rod 520. The tabletop support rod 5303 is fastened to the lower buckle plate 5302 on the plug connector 5301. The tabletop support rod 5303 is supported on the bottom of the tabletop unit 540. The upper buckle plate 550 at the bottom of the tabletop unit 540 is fastened to the tabletop support rod 5303.

[0100] The table 500 consists of a detachable tabletop unit 540, a support assembly 530, a folding structure 100, a lower support leg 510, and an upper support rod 520. The folding structure 100 forms the main support frame of the table. When the folding structure 100 is folded up and unfolded, the ends of the first rotating arm 102 and the second rotating arm 202 are respectively held by a single hand of the human body, resulting in even force distribution and smooth folding up and down.

[0101] Moreover, after the lower support leg 510 and the upper support rod 520 are folded and folded, they fit against the surfaces of the first rotating arm 102 and the second rotating arm 202 to form a bundle-like folded storage shape, which reduces the volume of the entire table frame after it is folded.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A folding structure, comprising: The first rotating assembly includes a first rotating disk and a first rotating arm connected thereto; The second rotating assembly includes a second rotating disk and a second rotating arm connected thereto; A rotating shaft connects the first rotating disk and the second rotating disk to enable their relative rotation. Its characteristic is that it further includes: A first support rod is rotatably mounted to the end of the first rotating arm; The second support rod is rotatably mounted on the end of the second rotating arm; Operate the first rotating arm and the second rotating arm to rotate them toward each other and retract them to bring them closer together; the first support rod and the second support rod connected to them will then move toward each other synchronously. When the first rotating arm and the second rotating arm are retracted and brought together, their outer surfaces on the same side combine to form a resting surface. The first support rod and the second support rod rotate toward the resting surface to fit or tend to fit onto the resting surface, forming a bundled folded storage shape.

2. The folding structure according to claim 1, characterized in that: The upper surfaces of the first rotating arm and the second rotating arm are coplanar, and the upper surfaces are parallel to the rotation planes of the first rotating arm and the second rotating arm.

3. The folding structure according to claim 1, characterized in that: A first flexible elastic element is disposed between the first support rod and the first rotating arm, the first elastic element being in a stretched energy storage state when the first support rod is folded; and / or; A second flexible element is disposed between the second support rod and the second rotating arm. The second flexible element is in a stretched energy storage state when the second support rod is folded.

4. The folding structure according to claim 3, characterized in that: The first support rod and / or the second support rod are adapted to automatically flip to the unfolded position when the external constraints are released.

5. The folding structure according to claim 3 or 4, characterized in that: The ends of the first rotating arm and the second rotating arm are respectively provided with insertion parts; The ends of the first support rod and the second support rod are respectively provided with insertion ends; The insertion end is adapted to be inserted into the insertion interface of the plug-in part, and is adapted to overcome the tension of the elastic element and separate from the insertion interface under the action of external force.

6. The folding structure according to claim 5, characterized in that: The plug-in part and the insertion end are rotatably connected by a pivot and a guide groove, wherein the pivot and the guide groove are slidably engaged and always remain connected. The extension direction of the guide groove is consistent with the insertion direction of the insertion end into the connector; the connector is provided with a clearance opening to provide rotation clearance space when the insertion end is pulled out.

7. The folding structure according to claim 5, characterized in that: The side of the insertion part is provided with a support guide, and the insertion end is provided with a sliding guide that cooperates with the support guide; wherein, when the external constraint is released: When the elastic element releases the tension, the sliding guide slides along the support guide, guiding the insertion end to align and insert into the insertion interface.

8. The folding structure according to any one of claims 1 to 4, characterized in that: The first support rod includes a first front seat rod and a first rear back rod, which are located at opposite ends of the first rotating arm, respectively. The second support rod includes a second front seat rod and a second rear back rod, which are located at opposite ends of the second rotating arm, respectively. When rotating and retracting, the first front seat rod and the second front seat rod move closer together, and the first back seat rod and the second back seat rod move closer together.

9. The folding structure according to claim 8, characterized in that: When folded and stored, the first front seat rod and the second front seat rod are stacked on the first layer of the resting surface, and the first back rod and the second back rod are stacked on the second layer of the resting surface.

10. The folding structure according to claim 3, characterized in that: When the first support rod is separated from the first rotating arm, the first support rod is flexibly connected to the first rotating arm through the first elastic element; When the second support rod is separated from the second rotating arm, the second support rod is flexibly connected to the second rotating arm through the second elastic element.

11. A folding chair, characterized in that, include: The folding structure as described in any one of claims 1 to 10; The first front foot rod, the first rear foot rod, the first front seat rod, and the first back rod are respectively inserted into the first rotating arm; The second front foot rod, the second rear foot rod, the second front seat rod, and the second back rod are respectively inserted into the second rotating arm; The seat back is supported at its four corners by the first front seat post, the second front seat post, the first backrest post, and the second backrest post, respectively.

12. The folding chair according to claim 11, characterized in that: The first support rod includes a first front leg rod, a first rear leg rod, a first front seat rod, and a first backrest rod; The second support rod includes the second front leg rod, the second rear leg rod, the second front seat rod, and the second backrest rod.

13. A storage rack, characterized in that, include: The folding structure as described in any one of claims 1 to 10; Support feet are respectively inserted into the first rotating arm and the second rotating arm; Support blocks are provided on the surfaces of the first rotating arm and the second rotating arm; The support block is suitable for placing a storage box.

14. The storage rack according to claim 13, characterized in that: The first support rod and the second support rod are configured as the support feet.

15. A table, characterized in that, include: The folding structure as described in any one of claims 1 to 10; The lower support foot and upper support rod are respectively inserted into the first rotating arm and the second rotating arm; Support assembly connected to the upper support rod; The tabletop unit is positioned above the support assembly.

16. The table according to claim 15, characterized in that: The support components include: A connector, adapted to be inserted into the end of the upper support rod; The lower snap plate is installed on the connector; The tabletop support rod is fastened to the lower buckle plate.

17. The table according to claim 16, characterized in that: The bottom of the tabletop unit is provided with an upper buckle plate, and the tabletop support rod is supported at the bottom of the tabletop unit. The upper buckle plate and the lower buckle plate are respectively fastened and connected to the tabletop support rod.

18. The table according to claim 15, characterized in that: Both the first support rod and the second support rod are constructed as the lower support foot and the upper support rod, respectively.

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