Rotary folding structure, folding chair, storage box frame and table

Abstract

The invention relates to the field of folding structures, and particularly discloses a rotary folding structure, a folding chair, a storage box frame and a table, a trigger piece and a locking body of the folding structure are arranged on the outer side of the same rotating arm and located in an end holding area of the rotating arm to form a part of a holding operation part, and the locking body is located on the other end of the rotating arm. At least part of the outer surface of the trigger piece forms a holding contact surface of the holding operation part; when a user holds the holding operation part to rotate the first rotating arm and the second rotating arm, the user can synchronously execute triggering operation on the triggering piece in the action of holding the rotating arms with one hand so as to drive the locking body to unlock the first rotating disc and the second rotating disc. When a user holds the rotating arm with one hand to fold or unfold, the locking body can be synchronously triggered to release locking through the holding action without additionally adjusting the hand position or using the other hand, the integrated operation of'triggering while holding 'is achieved, and the operation efficiency and the use comfort are greatly improved through the design.

Description

Technical Field

[0001] This invention relates to the field of folding structures, and in particular to a rotating folding structure and folding chairs, storage racks, and tables. 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 and closing of a folding chair, two frame components can be unfolded and folded relative to each other. These frame components typically include a rotating disc and a rotating arm. The rotating discs of the two frame components are rotatably connected. Based on an understanding of related technologies, the folding locking mechanism of some folding chairs is generally installed on the rotating disc. When folding the chair, one hand needs to press the locking mechanism on the rotating disc to unlock the rotating arm, while the other hand rotates the unlocked rotating arm to achieve the folding and closing of the chair. This method makes the folding and closing operation inconvenient because only one rotating arm is under force, while the other is unloaded. When the two rotating arms are folded relative to each other, uneven force distribution can easily occur, leading to uneven folding and closing. Furthermore, users need to adjust their hand position after holding the rotating arm or use their other hand to operate the trigger, resulting in cumbersome and inefficient operation. Especially in scenarios requiring rapid folding or unfolding, the need for two-handed operation significantly reduces usability.

[0004] Similarly, storage racks and tables with folding structures also present the above-mentioned technical problems when folded. Summary of the Invention

[0005] The purpose of at least one specific embodiment of the present invention is to overcome the defects of the prior art and provide a rotating and folding structure.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A rotating and retractable structure, comprising:

[0008] The first rotating assembly includes a first rotating disk and a first rotating arm connected thereto;

[0009] The second rotating assembly includes a second rotating disk and a second rotating arm connected thereto;

[0010] A rotating shaft connects the first rotating disk and the second rotating disk to enable their relative rotation.

[0011] A locking body is disposed within the first rotating arm or the second rotating arm, and is adapted to lock the relative rotation of the first rotating disk and the second rotating disk;

[0012] The trigger element is mechanically linked to the locking body;

[0013] The trigger and the locking body are disposed on the outside of the same rotating arm and located in the end gripping area of ​​the rotating arm, forming part of the gripping operation part, so that the outer surface of the trigger at least partially constitutes the gripping contact surface of the gripping operation part;

[0014] When a user holds the gripping operation part to rotate the first rotating arm and the second rotating arm, the user can simultaneously perform a triggering operation on the trigger while holding the rotating arm with one hand, so as to drive the locking body to release the locking of the first rotating disk and the second rotating disk.

[0015] Furthermore, the trigger element is a sliding sleeve;

[0016] The sliding sleeve is axially slidably sleeved on the outer periphery of the rotating arm and connected to the locking body by a linkage pin;

[0017] The triggering operation includes pulling the sliding sleeve backward along the axis of the rotating arm.

[0018] Furthermore, the locking body is a locking pin;

[0019] The locking pin is movably disposed within the inner cavity of the rotating arm;

[0020] A fixing pin, which is fixedly connected to the rotating arm and passes through the locking pin;

[0021] A spring is sleeved on the outside of the locking pin, with one end of the spring connected to the fixing pin and the other end abutting against the locking pin;

[0022] The linkage pin passes through the locking pin;

[0023] The sliding sleeve is fitted onto the rotating arm and is fixedly connected to the linkage pin.

[0024] The locking pin is provided with a locking limiting part, which is close to the first rotating disk and the second rotating disk and can limit the rotation angle of the first rotating disk and the second rotating disk.

[0025] Furthermore, the locking pin is provided with a guide groove, the fixing pin passes through the guide groove, the rotating arm is provided with a sliding groove, and the linkage pin slides in cooperation with the sliding groove.

[0026] Furthermore, the trigger is a trigger;

[0027] One end of the trigger is hinged to the rotating arm via a rotating pin, and the other end extends out from the inner cavity of the rotating arm and is connected to the locking body via a connector.

[0028] The triggering operation includes pulling the exposed force-applying end of the trigger towards the inside of the rotating arm.

[0029] Furthermore, the locking body is a locking pin;

[0030] The locking pin is movably disposed within the inner cavity of the rotating arm;

[0031] A fixing pin, which is fixedly connected to the rotating arm and passes through the locking pin;

[0032] A spring is sleeved on the outside of the locking pin, with one end of the spring connected to the fixing pin and the other end abutting against the locking pin;

[0033] One end of the connector is connected to the trigger, and the other end is connected to the locking pin;

[0034] The locking pin is provided with a locking limiting part, which is close to the first rotating disk and the second rotating disk and can limit the rotation angle of the first rotating disk and the second rotating disk.

[0035] Furthermore, the locking pin is provided with a guide groove, the fixing pin passes through the guide groove, and the guide groove extends in the length direction of the locking pin.

[0036] Furthermore, the locking body is adapted to elastically reset, and its direction of movement is perpendicular to the axis of the rotating shaft.

[0037] Furthermore, it also includes a first limiting groove, which is disposed on the first rotating disk;

[0038] The second limiting groove is provided on the second rotating disk;

[0039] In the unfolded state, the first limiting groove and the second limiting groove are spatially coaxial to form a circumferentially closed limiting hole. The locking body is driven by elastic force to embed into the limiting hole and forms circumferential interference with the inner wall of the limiting hole to prevent the first rotating disk and the second rotating disk from rotating relative to each other.

[0040] In the retracted state, the locking body disengages from the limiting hole, the first rotating disk and the second rotating disk can rotate relative to each other around the rotating shaft, and the locking body abuts against the outer peripheral surface of the first rotating disk or the second rotating disk under the action of elastic force.

[0041] Furthermore, the unfolded state and the retracted state are determined by the relative positions of the first rotating arm and the second rotating arm.

[0042] Furthermore, in the retracted state, the elastic force always causes the locking body to have a tendency to move radially toward the rotating shaft.

[0043] Furthermore, in the folded state, the first limiting groove and the second limiting groove are misaligned. During the transition from the folded state to the unfolded state, the locking body is continuously pressed against the outer peripheral surface of the first rotating disk or the second rotating disk by elastic force.

[0044] When the first rotating disk and the second rotating disk rotate relative to each other to a predetermined angle, the spatial positions of the first limiting groove and the second limiting groove are aligned, automatically forming the circumferentially closed limiting hole. The locking body is driven by elastic force to embed into the limiting hole and form circumferential interference with the inner wall of the limiting hole, thus completing the rotational locking.

[0045] Furthermore, in the unfolded state, the first limiting groove and the second limiting groove are spatially coaxial. During the transition from the unfolded state to the retracted state, a radial unlocking force is applied to the locking body to overcome the elastic force and cause the locking body to exit the limiting hole.

[0046] The first rotating disk and the second rotating disk obtain relative rotational degrees of freedom around the rotating axis. During the relative rotation, the first limiting groove and the second limiting groove are spatially misaligned, causing the limiting hole to disintegrate and disappear.

[0047] After the unlocking force is removed, the locking body abuts against the outer peripheral surface of the first or second rotating disk under the drive of elastic force, maintaining a non-interference state.

[0048] The advantages of the closing structure provided in this application compared to the prior art are as follows:

[0049] This invention places the trigger and the locking body in the gripping area at the outer end of the same rotating arm, so that the outer surface of the trigger directly forms the gripping contact surface of the gripping operation part. When the user holds the rotating arm with one hand to perform the closing or unfolding operation, there is no need to adjust the hand position or use the other hand. The user can trigger the locking body to release the lock simultaneously through the gripping action, realizing the integrated operation of "gripping triggers". This design greatly improves the operating efficiency and user comfort.

[0050] Moreover, the trigger element, as part of the grip contact surface, is ergonomically designed in terms of position and shape. When the user grips it, their hand naturally conforms to the trigger area, and the operation logic aligns with instinctive reactions, reducing the learning curve. Simultaneously, the synchronous trigger mechanism avoids the disjointed operation of "gripping first, then finding the trigger element" in traditional structures, making the rotation and folding process smoother and more coherent, improving the smoothness and reliability of human-computer interaction. Another technical solution adopted in this application is: providing a folding chair, comprising:

[0051] The aforementioned rotating and retracting structure;

[0052] The front foot rod, rear foot rod, front seat rod, and rear back rod are respectively inserted into the first rotating arm and the second rotating arm;

[0053] The first cable has one end inserted into and connected to the front leg bar, and the other end inserted into and connected to the front seat bar;

[0054] The second cable has one end inserted into and connected to the rear foot bar, and the other end inserted into and connected to the rear back bar;

[0055] The seat pocket is supported at its four corners by two front seat posts and two backrest posts.

[0056] With the above technical solution, after the folding chair adopts the above rotating and folding structure, when the entire folding chair is folded and unfolded, the ends of the first rotating arm and the second rotating arm are respectively held by one hand of the human body, the force is evenly distributed, and the folding is smooth.

[0057] Another technical solution adopted in this application is: providing a storage box rack, including:

[0058] The aforementioned rotating and retracting structure;

[0059] Support feet are respectively inserted into the first rotating arm and the second rotating arm;

[0060] Support blocks are provided on the surfaces of the first rotating arm and the second rotating arm;

[0061] 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.

[0062] With the above technical solution, the storage rack can be folded and unfolded during use. When folding and unfolding, the ends of the first and second rotating arms are respectively held by a single hand of the human body, so the force is even and the folding and unfolding is smooth.

[0063] Another technical solution adopted in this application is: providing a table, comprising:

[0064] The aforementioned rotating and retracting structure;

[0065] The lower support foot and upper support rod are respectively inserted into the first rotating arm and the second rotating arm;

[0066] Support assembly connected to the upper support rod;

[0067] The tabletop unit is positioned above the support assembly.

[0068] Furthermore, the support component includes:

[0069] A connector, adapted to be inserted into the end of the upper support rod;

[0070] The lower snap plate is installed on the connector;

[0071] The tabletop support rod is fastened to the lower buckle plate.

[0072] 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.

[0073] 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 folding structure is folded and unfolded, the ends of the first and second rotating arms are respectively held by a single hand of the human body, resulting in even force distribution and smooth folding. Attached Figure Description

[0074] To more clearly illustrate the specific embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0075] Figure 1 This is a schematic diagram of the folding structure in the unfolded state in Embodiment 1 of the present invention;

[0076] Figure 2 This is a schematic diagram of the folding structure in the folded state in Embodiment 1 of the present invention;

[0077] Figure 3 for Figure 1 An explosion diagram;

[0078] Figure 4 for Figure 1 A top-down view;

[0079] Figure 5 for Figure 4 Schematic diagram of the cross section along line AA;

[0080] Figure 6 for Figure 2 An explosion diagram;

[0081] Figure 7 for Figure 2 Another angle of the explosion diagram;

[0082] Figure 8 This is a schematic diagram of a partial cross-section of the folding structure after it has been folded up;

[0083] Figure 9 This is a diagram illustrating the forces acting on the folding structure of the present invention during folding.

[0084] Figure 10 This is a schematic diagram of the folding structure in the unfolded state in Embodiment 2 of the present invention;

[0085] Figure 11 This is a schematic diagram of the folding structure in the folded state in Embodiment 2 of the present invention;

[0086] Figure 12 for Figure 10 Another structural diagram from a different angle;

[0087] Figure 13 for Figure 10 An explosion diagram;

[0088] Figure 14 for Figure 10 A top-down view;

[0089] Figure 15 for Figure 14 Schematic diagram of the cross section along line BB;

[0090] Figure 16 for Figure 11 An explosion diagram;

[0091] Figure 17 for Figure 11 Another angle of the explosion diagram;

[0092] Figure 18 This is a partial cross-sectional schematic diagram of the folding structure after folding in Embodiment 2 of the present invention;

[0093] Figure 19 This is a diagram illustrating the forces acting on the folding structure during folding in Embodiment 2 of the present invention;

[0094] Figure 20 This is a schematic diagram of the structure of the folding chair in Embodiment 3 of the present invention;

[0095] Figure 21 This is a schematic diagram of the frame structure of the folding chair in Embodiment 3 of the present invention;

[0096] Figure 22 This is a schematic diagram of the folding chair frame after it is folded up in Embodiment 3 of the present invention;

[0097] Figure 23 This is a schematic diagram of the frame of the folding chair in Embodiment 3 of the present invention when it is folded and stored.

[0098] Figure 24 This is a schematic diagram of the easily deployable structure in Embodiment 3 of the present invention;

[0099] Figure 25 This is an assembly diagram of the easily deployable structure in Embodiment 3 of the present invention;

[0100] Figure 26 This is a schematic diagram of the structure of the easily deployable structure in Embodiment 3 of the present invention when the support rod is pulled out;

[0101] Figure 27 This is a schematic diagram of the support rod of the easily deployable structure in Embodiment 3 of the present invention when it is folded.

[0102] Figure 28 This is a schematic diagram of the structure of Embodiment 4 of the present invention;

[0103] Figure 29 This is a diagram illustrating the effect of using Embodiment 4 of the present invention;

[0104] Figure 30 This is a schematic diagram of the structure of Embodiment 5 of the present invention;

[0105] Figure 31 This is a schematic diagram of the structure from another angle in Embodiment 5 of the present invention. Detailed Implementation

[0106] The technical solution of the present invention 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 the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0107] Example 1

[0108] Reference Figure 1 , Figure 2 , Figure 3 A rotating and retractable structure 100 includes a first frame member 10, a second frame member 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.

[0109] The first frame component 10 includes a first rotating disk 101 and a first rotating arm 102 fixedly connected to the first rotating disk 101;

[0110] The second frame component 20 includes a second rotating disk 201 and a second rotating arm 202 fixedly connected to the second rotating disk 201;

[0111] The first rotating disk 101 and the second rotating disk 201 are rotatably connected by a rotating shaft, such as a pin 40.

[0112] Furthermore, 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;

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] Furthermore, refer to Figures 4-8The first rotating disk 101 has a first rotating contact surface 103, and the second rotating disk 201 has 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 has a first limiting groove 104 corresponding to the locking limiting part 306, and the second rotating contact surface 203 has a first limiting groove 104 corresponding to the locking limiting part 306. The first rotating disk 101 and the second rotating disk 201 are provided with a second limiting groove 204 corresponding to the locking limiting part 306. 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. Under the elastic force of the elastic member (spring 303), the locking limiting part 306 extends into the limiting hole 50 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 (see reference). Figure 5 (as shown);

[0118] 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 (see reference). Figure 8 (As shown).

[0119] 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.

[0120] 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.

[0121] 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.

[0122] 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 (see reference). Figure 6 As shown), the locking and limiting part 306 abuts against the outer peripheral surface of the first rotating disk 101 under the elastic force of the spring 303 (see reference). Figure 8 (As shown).

[0123] The following describes this embodiment in detail with reference to the specific state of the closing structure 100 and the closing process.

[0124] Reference Figure 9 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.

[0125] 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.

[0126] 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.

[0127] When the retractable 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 retractable structure 100 is in the retracted 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.

[0128] 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 contact with each other. The entire folding structure 100 can be opened or closed by the person holding the end gripping 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 be subjected to force, and there will be no problem of uneven force or unsmooth folding.

[0129] When the retractable structure 100 is in the retracted 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 retractable structure 100 is in the retracted 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 retractable structure 100 is in the retracted state, the end of the locking limiting part 306 will abut against the outer peripheral surface of the first rotating disk 101.

[0130] 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, and the folding structure 100 can achieve the effect of locking after unfolding.

[0131] In this embodiment, the first frame member 10 is an example of a first rotating assembly, the second frame member 20 is an example of a second rotating assembly, the first rotating disk 101 is an example of a first rotating member, the second rotating disk 201 is an example of a second rotating member, the first limiting groove 104 is an example of a first constraint part, and the second limiting groove 204 is an example of a second constraint part.

[0132] Example 2

[0133] Reference Figures 10 to 13 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.

[0134] 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.

[0135] 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.

[0136] 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.

[0137] 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.

[0138] 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.

[0139] 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.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] The following describes this embodiment in detail with reference to the specific state of the closing structure 100 and the closing process.

[0146] Reference Figure 19 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;

[0147] 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.

[0148] 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.

[0149] When the retractable 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 retractable structure 100 is in the retracted 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.

[0150] 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 fixed 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 contact with each other. The entire folding structure 100 can be opened or closed by the person's hands holding the end holding areas 60 of the first rotating arm 102 and the second rotating arm 202 respectively. During the entire operation, the ends of the first rotating arm 102 and the second rotating arm 202 are held by the person's one hand. Both the first rotating arm 102 and the second rotating arm 202 can be subjected to force, and there will be no problem of uneven force or unsmooth folding.

[0151] When the retractable structure 100 is in the retracted 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 retractable structure 100 is in the retracted 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 retractable structure 100 is in the retracted state, the end of the locking limiting part 407 will abut against the outer peripheral surface of the first rotating disk 101.

[0152] When the folding structure 100 transitions from the folded state to the 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.

[0153] Example 3

[0154] Reference Figures 20 to 23 Based on the same technical concept, this application provides a folding chair 200, which includes the rotating and folding structure 100 in the above embodiment 1 or embodiment 2;

[0155] The front foot rod 210, rear foot rod 220, front seat rod 230, and rear back rod 240 are respectively inserted into the first rotating arm 102 and the second rotating arm 202;

[0156] 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;

[0157] 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;

[0158] The seat 270 is supported at its four corners by two front seat posts 230 and two backrest posts 240.

[0159] It should be noted that the attached drawings of the folding chair 200 in this embodiment only show the rotating and folding structure 100 in embodiment 1. After the folding chair 200 adopts the above-mentioned folding and 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 and unfolding is smooth.

[0160] 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-extension 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-extension structure 300.

[0161] Reference Figures 24-27The easy-to-unfold structure 300 includes a support rod 320 rotatably mounted on the mounting body 310. The mounting body 310 is provided with a plug-in part 3101, and one end of the support rod 320 is an insertion end 3201, which is adapted to be inserted into the plug-in part 3101.

[0162] It should be noted that, in this embodiment, the mounting body 310 is configured as a first rotating arm 102 or a second rotating arm 202, and the support rod 320 is configured as a front leg rod 210 or a rear leg rod 220 or a front seat rod 230 or a rear back rod 240.

[0163] Furthermore, one of the insertion part 3101 and the insertion end 3201 is provided with a pivot 330, and the other of the insertion part 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, and the insertion direction of the support rod 320 relative to the insertion part 3101 is consistent with the extension direction of the guide groove 340.

[0164] In this embodiment, the pivot 330 is mounted on the insertion part 3101, and the guide groove 340 is disposed 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.

[0165] The insertion part 3101 is provided with a clearance opening 3102. When the support rod 320 rotates relative to the mounting body 310, the clearance opening 3102 provides the insertion end 3201 with the necessary clearance space to rotate out of the insertion part 3101.

[0166] 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.

[0167] 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.

[0168] 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 size design is that when the insertion end 3201 of the support rod 320 is fully inserted into the insertion part 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 part 3101, the pivot 330 is located at the second limiting end 3402 of the guide groove 340. When L2 is greater than L1, after the insertion end 3201 of the support rod 320 is fully withdrawn from the insertion part 3101, the end face of the insertion end 3201 can be located in the space where the clearance opening 3102 is located. In this case, the insertion end 3201 can rotate around the pivot 330 in the space provided by the clearance opening 3102.

[0169] 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.

[0170] 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 either the first cable 250 or the second cable 260.

[0171] 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.

[0172] The following is a detailed description of this application in conjunction with the specific usage of the Easy-Extend Structure 300.

[0173] 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.

[0174] 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.

[0175] 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.

[0176] 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.

[0177] 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.

[0178] 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.

[0179] 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.

[0180] 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.

[0181] 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.

[0182] Example 4

[0183] Reference Figure 28 , Figure 29 Based on the same technical concept, this application provides a storage box rack 400, which includes the rotating and folding structure 100 in the above embodiment 1 or embodiment 2, 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.

[0184] 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.

[0185] 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 rotating folding structure 100 in embodiment 1. Since the first rotating arm 102 and the second rotating arm 202 adopt the design of the rotating 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 evenly distributed, and the folding is smooth.

[0186] Example 5

[0187] Reference Figure 30 , Figure 31 Based on the same technical concept, this application provides a table 500, which includes the rotating and folding structure 100 in the above embodiment 1 or embodiment 2, 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 tabletop 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 rotating and folding structure 100 in embodiment 1.

[0188] In this embodiment, the support component 530 includes:

[0189] The connector 5301 can be plugged into the end of the upper support rod 520;

[0190] The lower snap plate 5302 is installed at one end of the connector 5301;

[0191] The tabletop support rod 5303 is fastened to the lower snap plate 5302.

[0192] 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.

[0193] 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 or 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.

[0194] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention 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 the present invention.

Claims

1. A rotating and collapsing 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. A locking body is disposed within the first rotating arm or the second rotating arm, and is adapted to lock the relative rotation of the first rotating disk and the second rotating disk; The trigger element is mechanically linked to the locking body; Its features are: The trigger and the locking body are disposed on the outside of the same rotating arm and located in the end gripping area of ​​the rotating arm, forming part of the gripping operation part, so that the outer surface of the trigger at least partially constitutes the gripping contact surface of the gripping operation part; When a user holds the gripping operation part to rotate the first rotating arm and the second rotating arm, the user can simultaneously perform a triggering operation on the trigger while holding the rotating arm with one hand, so as to drive the locking body to release the locking of the first rotating disk and the second rotating disk.

2. The rotating and collapsing structure according to claim 1, characterized in that: The trigger element is a sliding sleeve; The sliding sleeve is axially slidably sleeved on the outer periphery of the rotating arm and connected to the locking body by a linkage pin; The triggering operation includes pulling the sliding sleeve backward along the axis of the rotating arm.

3. The rotating and collapsing structure according to claim 2, characterized in that: The locking body is a locking pin; The locking pin is movably disposed within the inner cavity of the rotating arm; A fixing pin, which is fixedly connected to the rotating arm and passes through the locking pin; A spring is sleeved on the outside of the locking pin, with one end of the spring connected to the fixing pin and the other end abutting against the locking pin; The linkage pin passes through the locking pin; The sliding sleeve is fitted onto the rotating arm and is fixedly connected to the linkage pin; The locking pin is provided with a locking limiting part, which is close to the first rotating disk and the second rotating disk and can limit the rotation angle of the first rotating disk and the second rotating disk.

4. The rotating and collapsing structure according to claim 3, characterized in that: The locking pin is provided with a guide groove, the fixing pin passes through the guide groove, the rotating arm is provided with a sliding groove, and the linkage pin slides in cooperation with the sliding groove.

5. The rotating and collapsing structure according to claim 1, characterized in that: The trigger is a trigger; One end of the trigger is hinged to the rotating arm via a rotating pin, and the other end extends out from the inner cavity of the rotating arm and is connected to the locking body via a connector. The triggering operation includes pulling the exposed force-applying end of the trigger towards the inside of the rotating arm.

6. The rotating and collapsing structure according to claim 5, characterized in that: The locking body is a locking pin; The locking pin is movably disposed within the inner cavity of the rotating arm; A fixing pin, which is fixedly connected to the rotating arm and passes through the locking pin; A spring is sleeved on the outside of the locking pin, with one end of the spring connected to the fixing pin and the other end abutting against the locking pin; One end of the connector is connected to the trigger, and the other end is connected to the locking pin; The locking pin is provided with a locking limiting part, which is close to the first rotating disk and the second rotating disk and can limit the rotation angle of the first rotating disk and the second rotating disk.

7. A folding structure according to claim 6, characterized in that, The locking pin is provided with a guide groove, the fixing pin passes through the guide groove, and the guide groove extends in the length direction of the locking pin.

8. The rotating and collapsing structure according to any one of claims 1 to 7, characterized in that: The locking body is adapted for elastic reset, and its direction of movement is perpendicular to the axis of the rotating shaft.

9. The rotating and collapsing structure according to claim 8, characterized in that, Also includes: The first limiting groove is provided on the first rotating disk; The second limiting groove is provided on the second rotating disk; In the unfolded state, the first limiting groove and the second limiting groove are spatially coaxial to form a circumferentially closed limiting hole. The locking body is driven by elastic force to embed into the limiting hole and forms circumferential interference with the inner wall of the limiting hole to prevent the first rotating disk and the second rotating disk from rotating relative to each other. In the retracted state, the locking body disengages from the limiting hole, the first rotating disk and the second rotating disk can rotate relative to each other around the rotating shaft, and the locking body abuts against the outer peripheral surface of the first rotating disk or the second rotating disk under the action of elastic force.

10. The rotating and collapsing structure according to claim 9, characterized in that: The unfolded state and the retracted state are determined by the relative positions of the first rotating arm and the second rotating arm.

11. The rotating and collapsing structure according to claim 9, characterized in that: In the retracted state, the elastic force always causes the locking body to have a tendency to move radially toward the rotating shaft.

12. The rotating and collapsing structure according to claim 9, characterized in that: In the folded state, the first limiting groove and the second limiting groove are misaligned. During the transition from the folded state to the unfolded state, the locking body is continuously pressed against the outer peripheral surface of the first rotating disk or the second rotating disk by elastic force. When the first rotating disk and the second rotating disk rotate relative to each other to a predetermined angle, the spatial positions of the first limiting groove and the second limiting groove are aligned, automatically forming the circumferentially closed limiting hole. The locking body is driven by elastic force to embed into the limiting hole and form circumferential interference with the inner wall of the limiting hole, thus completing the rotational locking.

13. The rotating and collapsing structure according to claim 9, characterized in that: In the unfolded state, the first limiting groove and the second limiting groove are spatially coaxial. During the transition from the unfolded state to the retracted state, a radial unlocking force is applied to the locking body to overcome the elastic force and cause the locking body to exit the limiting hole. The first rotating disk and the second rotating disk obtain relative rotational degrees of freedom around the rotating axis. During the relative rotation, the first limiting groove and the second limiting groove are spatially misaligned, causing the limiting hole to disintegrate and disappear. After the unlocking force is removed, the locking body abuts against the outer peripheral surface of the first or second rotating disk under the drive of elastic force, maintaining a non-interference state.

14. A folding chair, characterized in that, include: The rotating and collapsing structure as described in any one of claims 1 to 13; The front foot rod, rear foot rod, front seat rod, and rear back rod are respectively inserted into the first rotating arm and the second rotating arm; The first cable has one end inserted into and connected to the front leg bar, and the other end inserted into and connected to the front seat bar; The second cable has one end inserted into and connected to the rear leg bar, and the other end inserted into and connected to the rear back bar; The seat pocket is supported at its four corners by two of the aforementioned front seat posts and two of the aforementioned back posts, respectively.

15. A storage rack, characterized in that, include: The rotating and collapsing structure as described in any one of claims 1 to 13; 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 and second rotating arms; The support block is suitable for placing a storage box.

16. A table, characterized in that, include: The rotating and collapsing structure as described in any one of claims 1 to 13; 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.

17. The table according to claim 16, 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.

18. The table according to claim 17, 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.

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