Rotary folding structure, foldable chair, storage box support and table

Abstract

The present invention relates to the field of folding structures. Specifically disclosed are a rotary folding structure, a foldable chair, a storage box support and a table. The folding structure comprises a first frame member, a second frame member and a locking assembly mounted on the first frame member or the second frame member; the first frame member comprises a first rotary disc and a first rotating arm; the second frame member comprises a second rotary disc and a second rotating arm; the first rotary disc is rotatably connected to the second rotary disc; the locking assembly comprises a trigger member and a locking member, the trigger member being mounted on the first rotating arm or the second rotating arm, and the locking member being suitable for limiting the rotation angles of the first rotary disc and the second rotary disc; after being triggered, the trigger member can be linked with the locking member to release the position limitation of the locking member on the first rotary disc and the second rotary disc. Both the first rotating arm and the second rotating arm can be stressed during unfolding or folding the whole folding structure, thus avoiding the problem of uneven stress or unsmooth folding.

Description

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

[0001] The present application relates to the field of folding structure, in particular to a rotary folding structure and a folding chair, a storage box frame and a table. BACKGROUND

[0002] The folding chair generally comprises two mutually hinged frame members, and front leg rods, rear leg rods, front seat rods and back rods are inserted into the frame members, wherein the front leg rods and the front seat rods are connected by elastic cables, and the rear leg rods and the back rods are connected by elastic cables.

[0003] In order to facilitate folding of the folding chair, the two frame members can be relatively unfolded and folded, and the frame member generally comprises a rotary disc and a rotary arm, and the rotary discs of the two frame members are rotationally connected. Through understanding of the related art, the folding lock of some folding chairs is generally installed on the rotary disc. When the folding chair is folded, one hand of a person needs to press the lock on the rotary disc to unlock the locking state of the rotary arm, and the other hand of the person rotates the unlocked rotary arm, so as to achieve the purpose of folding the folding chair. This way can cause the folding operation of the folding chair to be inconvenient. Because when the folding chair is folded in this way, only one rotary arm is stressed, and the other rotary arm is not stressed. When the two rotary arms are relatively folded, the problem of uneven stress can easily occur, and the folding of the folding chair can easily be not smooth.

[0004] Similarly, the storage box frame and the table and other related structures adopting the folding structure can also have the above technical problems when being folded. SUMMARY

[0005] The purpose of at least one embodiment of the present application is to solve the defects in the prior art and provide a rotary folding structure and a folding chair.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows:

[0007] A rotary folding structure comprises:

[0008] A first rotary member and a second rotary member are rotationally connected by a rotating shaft;

[0009] A first constraint part is arranged on the first rotary member;

[0010] A second constraint part is arranged on the second rotary member;

[0011] An elastically resettable locking body, wherein

[0012] In the expanded state, the first constraint part and the second constraint part are coaxial in space to form a circumferentially closed constraint hole, the locking body is driven by the elastic force to be embedded in the constraint hole, and circumferential interference is formed between the locking body and the inner wall of the constraint hole to prevent the relative rotation of the first rotating part and the second rotating part.

[0013] In the collapsed state, the locking body is separated from the constraint hole, the first rotating part and the second rotating part can rotate relative to the rotating shaft, and the locking body is abutted against the outer circumferential surface of the first rotating part or the second rotating part under the action of the elastic force.

[0014] Further, the embedding movement direction of the locking body is perpendicular to the axial direction of the rotating shaft.

[0015] Further, in the collapsed state, the elastic force always makes the locking body have a movement trend towards the radial direction of the rotating shaft.

[0016] Further, in the collapsed state, the first constraint part and the second constraint part are misaligned, and during the conversion from the collapsed state to the expanded state, the locking body is continuously pressed against the outer circumferential surface of the first rotating part or the second rotating part under the action of the elastic force.

[0017] When the first rotating part and the second rotating part rotate relative to each other to a predetermined angle, the spatial positions of the first constraint part and the second constraint part are aligned, the circumferentially closed constraint hole is automatically formed, the locking body is embedded in the constraint hole under the action of the elastic force and circumferential interference is formed between the locking body and the inner wall of the constraint hole, and the rotation locking is completed.

[0018] Further, in the expanded state, the first constraint part and the second constraint part are coaxial in space, and during the conversion from the expanded state to the collapsed state, a radial unlocking external force is applied to the locking body to make the locking body exit the constraint hole against the elastic force.

[0019] The first rotating part and the second rotating part obtain the relative rotation freedom around the rotating shaft, and during the relative rotation, the first constraint part and the second constraint part are misaligned in space, resulting in the disappearance of the constraint hole.

[0020] After the unlocking external force is removed, the locking body is abutted against the outer circumferential surface of the first rotating part or the second rotating part under the action of the elastic force, and a non-interference state is maintained.

[0021] Yet another rotating and collapsing structure is provided in the application, which comprises:

[0022] The first rotating disc comprises a first rotating contact surface and a first limiting groove arranged on the first rotating contact surface.

[0023] a second rotating disc comprising a second rotating contact surface opposite to the first rotating contact surface and a second limiting slot arranged on the second rotating contact surface;

[0024] a pin shaft connecting the first rotating disc and the second rotating disc to realize relative rotation therebetween;

[0025] a locking assembly comprising a locking pin, an elastic member and a locking limiting portion arranged at an end of the locking pin;

[0026] wherein the first rotating disc and the second rotating disc have a first position and a second position opposite to each other;

[0027] in the first position, the first limiting slot and the second limiting slot are coaxially spaced to form a circumferentially closed limiting hole, the locking limiting portion extends into the limiting hole under the elastic force of the elastic member and forms circumferential interference with the inner wall of the limiting hole to prevent relative rotation of the rotating discs;

[0028] in the second position, the locking limiting portion is separated from the limiting hole, the first rotating contact surface and the second rotating contact surface can rotate relative to each other around the pin shaft, and the locking limiting portion is reset to abut against the outer circumferential surface of the first rotating disc or the second rotating disc.

[0029] Further, the first rotating disc is fixedly connected to a first rotating arm, and the second rotating disc is fixedly connected to a second rotating arm, wherein the first position and the second position are determined by the relative positions of the first rotating arm and the second rotating arm.

[0030] Further, after the locking limiting portion is separated from the limiting hole, the end portion thereof continuously abuts against the outer circumferential surface of the first rotating disc or the second rotating disc under the elastic force of the elastic member.

[0031] Further, the locking pin and the elastic member of the locking assembly are installed in the internal cavity of the first rotating arm, and the locking pin is adapted to be actuated by a trigger member movably mounted on the outside of the first rotating arm; or,

[0032] the locking pin and the elastic member of the locking assembly are installed in the internal cavity of the second rotating arm, and the locking pin is adapted to be actuated by a trigger member movably mounted on the outside of the second rotating arm.

[0033] Further, the trigger member is located at the end holding area of the first rotating arm or the second rotating arm;

[0034] The trigger member is configured to be triggered when a user holds the end holding area to rotate the first rotating arm or the second rotating arm.

[0035] Further, the trigger member is a sliding sleeve;

[0036] The sliding sleeve is arranged on the first rotating arm or the second rotating arm and connected with the locking pin through a linkage pin.

[0037] Further, the trigger is a trigger;

[0038] One end of the trigger is hinged to the first rotating arm or the second rotating arm through a rotating pin, and the other end extends out of the inner cavity of the first rotating arm or the second rotating arm and is connected with the locking pin through a connecting piece.

[0039] The rotation folding structure provided by the present application has the beneficial technical effects of the prior art in that the locking assembly of the rotation folding structure includes a trigger and a locking piece, the trigger is installed at the end holding area of the first rotating arm or the second rotating arm, when the folding structure is converted from the unfolded state to the folded state, a person holds the holding areas at one end of the first rotating arm and the second rotating arm respectively, after the person touches the trigger, the trigger links the locking piece, the locking action of the locking piece on the first rotating disc and the second rotating disc is released, the person rotates the first rotating arm and the second rotating arm and moves them towards each other until the first rotating arm and the second rotating arm are in close contact with each other, during the unfolding and folding processes of the entire folding structure, the person holds the holding areas at one end of the first rotating arm and the second rotating arm respectively, during the entire operation process, one hand of the person holds one end of the first rotating arm and the second rotating arm respectively, the first rotating arm and the second rotating arm can be subjected to force, and there is no problem of uneven force or inharmonious folding.

[0040] Another technical solution adopted by the present application is to provide a folding chair, which includes:

[0041] The above-mentioned rotation folding structure;

[0042] A front leg rod, a rear leg rod, a front seat rod, and a back rod are respectively inserted into the first rotating arm and the second rotating arm;

[0043] A first cable, one end of which extends into the front leg rod and is connected therewith, and the other end of which extends into the front seat rod and is connected therewith;

[0044] A second cable, one end of which extends into the rear leg rod and is connected therewith, and the other end of which extends into the back rod and is connected therewith;

[0045] A chair pocket, which is supported by the two front seat rods and the two back rods at four corners respectively.

[0046] Through the above technical solution, after the folding chair adopts the above-mentioned rotation folding structure, during the folding and unfolding of the entire folding chair, one end of the first rotating arm and the second rotating arm is held by one hand of the person respectively, the force is uniform, and the folding is smooth.

[0047] The application further provides a table, which comprises:

[0048] The rotating folding structure described above;

[0049] Supporting legs respectively inserted into the first rotating arm and the second rotating arm;

[0050] Supporting blocks arranged on the surfaces of the first rotating arm and the second rotating arm;

[0051] The supporting blocks are suitable for placing the storage box, and the surfaces of the supporting blocks are provided with friction surfaces, so that the storage box can be prevented from slipping when placed.

[0052] Through the above technical scheme, the storage box frame can be folded and unfolded when used, and the ends of the first rotating arm and the second rotating arm are respectively held by a single hand of a human body when being folded and unfolded, so that the force is uniform and the folding is smooth.

[0053] The application further provides a table, which comprises:

[0054] The rotating folding structure described above;

[0055] Lower supporting legs and upper supporting rods respectively inserted into the first rotating arm and the second rotating arm;

[0056] A supporting assembly connected with the upper supporting rods;

[0057] A table plate unit arranged above the supporting assembly.

[0058] Further, the supporting assembly comprises:

[0059] A plug-in head suitable for being plugged into the end of the upper supporting rod;

[0060] A lower buckle plate installed on the plug-in head;

[0061] A table plate supporting rod buckled and connected with the lower buckle plate.

[0062] Further, the bottom of the table plate unit is provided with an upper buckle plate, the table plate supporting rod is supported on the bottom of the table plate unit, and the upper buckle plate and the lower buckle plate are respectively buckled and connected with the table plate supporting rod.

[0063] Through the above technical scheme, the table is composed of a detachable table plate unit, a supporting assembly, a folding structure, lower supporting legs and upper supporting rods, the folding structure constitutes the main supporting frame of the table, and the ends of the first rotating arm and the second rotating arm are respectively held by a single hand of a human body when being folded and unfolded, so that the force is uniform and the folding is smooth. BRIEF DESCRIPTION OF DRAWINGS

[0064] In order to make the specific embodiments of the present application or the technical solutions in the prior art clearer, the accompanying drawings needed in the specific embodiments or the prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are some embodiments of the present application, and other accompanying drawings can be obtained by those skilled in the art without any creative effort on the basis of these accompanying drawings.

[0065] Fig. 1 is a schematic view of the folding structure in the unfolded state according to an embodiment of the present application;

[0066] Fig. 2 is a schematic view of the folding structure in the folded state according to an embodiment of the present application;

[0067] Fig. 3 is an exploded schematic view of Fig. 1;

[0068] Fig. 4 is a top view schematic view of Fig. 1;

[0069] Fig. 5 is a sectional view along line A-A of Fig. 4;

[0070] Fig. 6 is an exploded schematic view of Fig. 2;

[0071] Fig. 7 is an exploded schematic view of Fig. 2 from another angle;

[0072] Fig. 8 is a partial sectional view of the folding structure after folding according to an embodiment of the present application;

[0073] Fig. 9 is a force display diagram of the folding structure when folding according to an embodiment of the present application;

[0074] Fig. 10 is a schematic view of the folding structure in the unfolded state according to an embodiment of the present application;

[0075] Fig. 11 is a schematic view of the folding structure in the folded state according to an embodiment of the present application;

[0076] Fig. 12 is a schematic view of Fig. 10 from another angle;

[0077] Fig. 13 is an exploded schematic view of Fig. 10;

[0078] Fig. 14 is a top view schematic view of Fig. 10;

[0079] Fig. 15 is a sectional view along line B-B of Fig. 14;

[0080] Fig. 16 is an exploded schematic view of Fig. 11;

[0081] Fig. 17 is an exploded schematic view of Fig. 11 from another angle;

[0082] Fig. 18 is a partial sectional view of the folding structure after folding according to an embodiment of the present application;

[0083] Fig. 19 is a force display diagram of the folding structure when folding according to an embodiment of the present application;

[0084] Fig. 20 is a structural diagram of the folding chair of Embodiment 3 of the present application;

[0085] Fig. 21 is a structural diagram of the framework of the folding chair of Embodiment 3 of the present application;

[0086] Fig. 22 is a structural diagram of the framework of the folding chair of Embodiment 3 of the present application after being folded;

[0087] Fig. 23 is a structural diagram of the framework of the folding chair of Embodiment 3 of the present application when being folded for storage;

[0088] Fig. 24 is a structural diagram of the easy-to-unfold structure of Embodiment 3 of the present application;

[0089] Fig. 25 is an assembly diagram of the easy-to-unfold structure of Embodiment 3 of the present application;

[0090] Fig. 26 is a structural diagram of the easy-to-unfold structure of Embodiment 3 of the present application when the support rods are being pulled out;

[0091] Fig. 27 is a structural diagram of the easy-to-unfold structure of Embodiment 3 of the present application when the support rods are being folded;

[0092] Fig. 28 is a structural diagram of the framework of the folding chair of Embodiment 4 of the present application;

[0093] Fig. 29 is a structural diagram of the framework of the folding chair of Embodiment 4 of the present application after being folded;

[0094] Fig. 30 is a structural diagram of the easy-to-unfold structure of Embodiment 4 of the present application;

[0095] Fig. 31 is a structural diagram of the frame member of Embodiment 4 of the present application;

[0096] Fig. 32 is a structural diagram of the easy-to-unfold structure of Embodiment 4 of the present application when the support rods are being pulled out;

[0097] Fig. 33 is a structural diagram of the easy-to-unfold structure of Embodiment 4 of the present application when the support rods are being folded;

[0098] Fig. 34 is a sectional structural diagram of the easy-to-unfold structure of Embodiment 4 of the present application;

[0099] Fig. 35 is a structural diagram of Embodiment 5 of the present application;

[0100] Fig. 36 is a use effect diagram of Embodiment 5 of the present application;

[0101] Fig. 37 is a structural diagram of Embodiment 6 of the present application;

[0102] Fig. 38 is a use effect diagram of Embodiment 6 of the present application

[0103] Fig. 39 is a structural diagram of Embodiment 7 of the present application;

[0104] Figure 40 is another perspective view of the embodiment 7 of the present application;

[0105] Figure 41 is a perspective view of the embodiment 8 of the present application in an unfolded state;

[0106] Figure 42 is a perspective view of the embodiment 8 of the present application showing the sliding of the unit beams relative to the linkage;

[0107] Figure 43 is a perspective view of the embodiment 8 of the present application showing the turning of the unit beams towards each other;

[0108] Figure 44 is a perspective view of the embodiment 8 of the present application showing the turning of the unit beams towards each other;

[0109] Figure 45 is a perspective view of the embodiment 8 of the present application showing the turning of the unit beams towards each other;

[0110] Figure 46 is a perspective view of the embodiment 8 of the present application showing the turning of the unit beams towards each other;

[0111] Figure 47 is a perspective view of the embodiment 8 of the present application showing the turning of the unit beams towards each other;

[0112] Figure 48 is a perspective view of the embodiment 8 of the present application showing the turning of the unit beams towards each other;

[0113] Figure 49 is a perspective view of the embodiment 8 of the present application showing the turning of the unit beams towards each other;

[0114] Figure 50 is a perspective view of the embodiment 8 of the present application showing the turning of the unit beams towards each other. DETAILED DESCRIPTION

[0115] The technical solutions of the present application will be described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0116] Embodiment 1

[0117] Referring to Figures 1, 2 and 3, a turning folding structure 100 comprises a first frame member (or a first turning assembly) 10, a second frame member (or a second turning assembly) 20 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.

[0118] The first frame member 10 comprises a first turning disc (or a first turning member) 101, a first turning arm 102 fixedly connected to the first turning disc 101, and a first connecting arm 102a provided at an end of the first turning arm 102.

[0119] The second frame member 20 comprises a second rotating disc 201, a second rotating arm 202 fixedly connected with the second rotating disc (or second rotating member) 201, and a second connecting arm 202a arranged at the end of the second rotating arm 202;

[0120] The first rotating disc 101 and the second rotating disc 201 are rotationally connected through a rotating shaft, such as a pin shaft 40;

[0121] Further, the locking assembly 30 comprises a locking pin 301 movably arranged in the inner cavity of the first rotating arm 102 or the second rotating arm 202, a fixed pin 302 fixedly connected with the first rotating arm 102 or the second rotating arm 202 and penetrating the locking pin 301, a spring 303 sleeved on the outside of the locking pin 301 and connected at one end with the fixed pin 302 and at the other end with the locking pin 301, a linkage pin 304 penetrating 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 with the linkage pin 304;

[0122] The sliding sleeve 305 is configured as a trigger, which is installed on the first rotating arm 102 or the second rotating arm 202, and the locking pin 301 is configured as a locking member, which is normally used to limit the rotation angle of the first rotating disc 101 and the second rotating disc 201;

[0123] After the trigger is triggered, the locking member can be linked through the linkage pin 304 to release the limitation of the locking member on the first rotating disc 101 and the second rotating disc 201;

[0124] The locking pin 301 is provided with a locking limiting portion 306, which is close to the first rotating disc 101 and the second rotating disc 201 and can limit the rotation angle of the first rotating disc 101 and the second rotating disc 201.

[0125] Further, the locking pin 301 is provided with a guide groove 307, the fixed pin 302 penetrates 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 in sliding fit with the sliding groove 308, wherein 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.

[0126] Further, referring to FIGS. 4-8, the first rotating disc 101 is provided with a first rotating contact surface 103, and the second rotating disc 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 disc 101 and the second rotating disc 201 are rotationally connected by the pin shaft 40, the first rotating contact surface 103 and the second rotating contact surface 203 can relatively rotate around the pin shaft 40. The first rotating contact surface 103 is provided with a first limiting groove 104 corresponding to the locking limiting part 306, i.e., a first constraint part. The second rotating contact surface 203 is provided with a second limiting groove 204 corresponding to the locking limiting part 306, i.e., a second constraint part. The first rotating disc 101 and the second rotating disc 201 have a first position and a second position. In the first position, the first limiting groove 104 and the second limiting groove 204 are coaxially spaced 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 a circumferential interference with the inner wall of the limiting hole 50 to prevent the first rotating disc 101 and the second rotating disc 201 from relatively rotating (as shown in FIG. 5).

[0127] In the second position, the locking limiting part 306 is separated from the limiting hole 50, and the first rotating contact surface 103 and the second rotating contact surface 203 can relatively rotate around the pin shaft 40. When the locking limiting part 306 is reset, it abuts against the outer circumferential surface of the first rotating disc 101 or the second rotating disc 201 (as shown in FIG. 8).

[0128] Specifically, when the first rotating arm 102 and the second rotating arm 202 are relatively unfolded, the first rotating disc 101 and the second rotating disc 201 are in the first position. The first limiting groove 104 and the second limiting groove 204 are coincided to form the limiting hole 50, i.e., the upper and lower half grooves are aligned and matched, and jointly enclose the limiting hole 50. As can be seen, the limiting hole 50 is jointly 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 coaxially spaced, and the center axes thereof 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 a 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 relatively rotate. The shape of the limiting hole 50 is matched with the shape of the locking limiting part 306. The diameter of the locking limiting part 306 is smaller than the caliber of the limiting hole 50.

[0129] When the first rotating arm 102 and the second rotating arm 202 need to be folded, the locking 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 relatively around the pin shaft 40, the first limiting slot 104 and the second limiting slot 204 are staggered with each other, and after the first rotating arm 102 and the second rotating arm 202 are relatively folded, the first rotating disc 101 and the second rotating disc 201 are in the second relative position, and when the locking limiting part 306 is reset under the elastic force of the spring 303, the end thereof is in abutment with the outer circumferential surface of the first rotating disc 101 or the second rotating disc 201.

[0130] Further, 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, 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 relatively folded, the first limiting slot 104 and the second limiting slot 204 are staggered with each other, and the locking limiting part 306 is in abutment with the outer circumferential surface of the second rotating disc 201 under the elastic force of the spring 303;

[0131] 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, 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 relatively folded, the first limiting slot 104 and the second limiting slot 204 are staggered with each other (as shown in FIG. 6), and the locking limiting part 306 is in abutment with the outer circumferential surface of the first rotating disc 101 under the elastic force of the spring 303 (as shown in FIG. 8).

[0132] The embodiment will be described in detail below in combination with the specific state and folding process of the folding structure 100.

[0133] Referring to FIG. 9, in the embodiment, the trigger (the sliding sleeve 305) is installed on the end holding area 60 of the first rotating arm 102 or the second rotating arm 202, and specifically, the trigger (the sliding sleeve 305) is installed on the end holding area 60 of the second rotating arm 202 as an example;

[0134] Specifically, the trigger (the sliding sleeve 305) and the locking body (the locking pin 301) are arranged on the outside of the same rotating arm (for example, the second rotating arm 202) and located in the end holding area of the second rotating arm 202, and constitute part of the holding operation part W, so that the outer surface of the trigger (the sliding sleeve 305) at least partially constitutes the holding contact surface of the holding operation part W.

[0135] When the user holds the holding operation part W to rotate the first rotating arm 102 and the second rotating arm 202, the user can perform the trigger operation on the trigger part (sliding sleeve 305) in the action of holding the second rotating arm 202 with one hand, to drive the locking body (locking pin 301) to release the locking of the first rotating disc 101 and the second rotating disc 201.

[0136] When the folding structure 100 is in the unfolded state, the locking part (locking pin 301) locks the first rotating disc 101 and the second rotating disc 201, and when the folding structure 100 is in the folded state, the locking action of the locking part (locking pin 301) on the first rotating disc 101 and the second rotating disc 201 is released.

[0137] When the folding structure 100 is converted from the unfolded state to the folded state, the hands hold the holding areas 60 at one end of the first rotating arm 102 and the second rotating arm 202 respectively, and after pulling the trigger part (sliding sleeve 305) backward, the trigger part (sliding sleeve 305) links the locking part (locking pin 301) through the linkage pin 304, the locking pin 301 slides relative to the fixed pin 302 through the guide groove 307, at this time, the locking limiting part 306 is pulled out of the limiting hole 50, the spring 303 is in a compressed state, the locking action of the locking part on the first rotating disc 101 and the second rotating disc 201 is released, the first rotating disc 101 and the second rotating disc 201 can rotate relative to the pin shaft 40, the hands rotate the first rotating arm 102 and the second rotating arm 202 and move towards each other, until the first rotating arm 102 and the second rotating arm 202 are attached to each other, during the unfolding and folding of the entire folding structure 100, the hands are held at the end holding areas 60 of the first rotating arm 102 and the second rotating arm 202 respectively, during the entire operation process, the ends of the first rotating arm 102 and the second rotating arm 202 are held by the hands respectively, the first rotating arm 102 and the second rotating arm 202 can be stressed, and there is no problem of uneven stress or folding inconvenience.

[0138] When the folding structure 100 is in the folded state, the first limiting groove 104 and the second limiting groove 204 are staggered, 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 the end thereof will be in contact with the outer circumferential surface of the first rotating disc 101 or the second rotating disc 201, in specific design, if the locking pin 301 is arranged 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 be in contact with the outer circumferential surface of the second rotating disc 201, if the locking pin 301 is arranged 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 be in contact with the outer circumferential surface of the first rotating disc 101.

[0139] When the folding structure 100 is converted from the folded state to the unfolded state, a person holds the holding area 60 at one end of the first rotating arm 102 and the second rotating arm 202 respectively, and pulls the end of the first rotating arm 102 and the second rotating arm 202 to the two sides respectively. At this time, the first rotating disc 101 and the second rotating disc 201 can rotate relative to the pin shaft 40 until the first limiting groove 104 and the second limiting groove 204 coincide, that is, the upper and lower half grooves are aligned and matched to form a limiting hole 50. As can be seen, the limiting hole 50 is formed by the side walls of the first limiting groove 104 and the side walls of the second limiting groove 204. At this time, the first limiting groove 104 and the second limiting groove 204 are coaxial in space, and the center axes of the two 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 a 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 being locked after being unfolded.

[0140] Embodiment 2

[0141] Referring to FIGS. 10 to 13, the difference between the present embodiment and embodiment 1 is that the structure of the locking assembly 40a in the present embodiment is different from that of the locking assembly in embodiment 1. In the present embodiment, the locking assembly 40a includes a locking pin 401 movably arranged in the inner cavity of the first rotating arm 102 or the second rotating arm 202, a fixed pin 402 fixedly connected with the first rotating arm 102 or the second rotating arm 202 and penetrating through the locking pin 401, a spring 403 sleeved outside the locking pin 401 and connected at one end with the fixed pin 402 and at the other end with 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.

[0142] One end of the trigger 405 is hinged to the first rotating arm 102 or the second rotating arm 202 to form a hinged end 4051, and the other end of the trigger 405 extends out of the inner cavity of the first rotating arm 102 or the second rotating arm 202 to form a pressure receiving end 4052. One end of the connecting buckle 406 is connected to the middle part of the trigger 405, and the other end of the connecting buckle 406 is connected to the end of the locking pin 401.

[0143] Among them, the trigger 405 is configured as a trigger piece, the trigger piece is installed on the first rotating arm 102 or the second rotating arm 202, the locking pin 401 is configured as a locking piece, and the connecting buckle 406 is configured as a connecting piece. Under normal circumstances, the locking piece is used to limit the rotation angle of the first rotating disc 101 and the second rotating disc 201.

[0144] When the trigger is triggered, the locking member can be connected to the buckle 406 to release the locking of the first rotating disc 101 and the second rotating disc 201;

[0145] Referring to FIG. 14 and FIG. 15, the locking pin 401 is provided with a locking limiting portion 407, which is close to the first rotating disc 101 and the second rotating disc 201 and can limit the rotation angle of the first rotating disc 101 and the second rotating disc 201.

[0146] In addition, in order 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 is provided with a mounting port 408, and when the locking assembly 40 is installed on the second rotating arm 202, the second rotating arm 202 is provided with a mounting port 408, which is the space required for the rotation of the trigger 405.

[0147] Further, the locking pin 401 is provided with a guide groove 409, and the fixing pin 402 penetrates the guide groove 409, and the guide groove 409 extends along the length direction of the locking pin 401.

[0148] Further, referring to FIG. 16 to FIG. 19, the first rotating disc 101 is provided with a first rotating contact surface 103, and the second rotating disc 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, and the first rotating disc 101 and the second rotating disc 201 are rotatably connected by the pin shaft 40, the first rotating contact surface 103 and the second rotating contact surface 203 can rotate relative to each other around the pin shaft 40, the first rotating contact surface 103 is provided with a first limiting groove 104 corresponding to the locking limiting portion 407, and the second rotating contact surface 203 is provided with a second limiting groove 204 corresponding to the locking limiting portion 407.

[0149] When the first rotating arm 102 and the second rotating arm 202 are relatively unfolded, the first limiting groove 104 and the second limiting groove 204 are coaxially formed into a limiting hole 50, under the elastic force of the spring 403, the locking limiting portion 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, wherein the shape of the limiting hole 50 is matched with the shape of the locking limiting portion 407, and the diameter of the locking limiting portion 407 is smaller than the caliber of the limiting hole 50;

[0150] When the first rotating arm 102 and the second rotating arm 202 are relatively folded, the user presses the trigger 405, the trigger 405 rotates around the rotating pin 404, and in the process of rotation, the trigger 405 drives the locking pin 401 to retreat through the connecting buckle 406, and the locking limiting part 407 at the end of the locking pin 401 is pulled out of the limiting hole 50. At this time, the limiting state of the first rotating disc 101 and the second rotating disc 201 is released, the first rotating contact surface 103 and the second rotating contact surface 203 can rotate around the pin shaft 40, the first limiting groove 104 and the second limiting groove 204 are staggered, and when the locking limiting part 407 is reset under the elastic force of the spring 403, the end thereof is in contact with the outer circumferential surface of the first rotating disc 101 or the second rotating disc 201.

[0151] 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 relatively folded, the first limiting groove 104 and the second limiting groove 204 are staggered, and the locking limiting part 407 is in contact with the outer circumferential surface of the second rotating disc 201 under the elastic force of the spring 403.

[0152] 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 relatively folded, the first limiting groove 104 and the second limiting groove 204 are staggered, and the locking limiting part 407 is in contact with the outer circumferential surface of the first rotating disc 101 under the elastic force of the spring 403.

[0153] The specific state and folding process of the folding structure 100 will be described in detail below.

[0154] Referring to FIG. 19, in the present embodiment, the trigger (trigger 405) is installed at the end holding area 60 of the first rotating arm 102 or the second rotating arm 202.

[0155] Specifically, the trigger (trigger 405) and the locking body (locking pin 301) are arranged on the outside of the same rotating arm (such as the second rotating arm 202) and located at the end holding area of the second rotating arm 202, forming part of the holding operation part W, so that the outer surface of the trigger (trigger 405) at least partially forms the holding contact surface of the holding operation part W.

[0156] When the user holds the holding operation part W to rotate the first rotating arm 102 and the second rotating arm 202, the user can simultaneously perform the trigger operation on the trigger (trigger 405) in the action of 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 disc 101 and the second rotating disc 201.

[0157] When the folding structure 100 is in the unfolded state, the locking member (locking pin 401) locks the first rotating disc 101 and the second rotating disc 201, and when the folding structure 100 is in the folded state, the locking action of the locking member (locking pin 401) on the first rotating disc 101 and the second rotating disc 201 is released;

[0158] When the folding structure 100 is converted from the unfolded state to the folded state, a hand holds the holding area 60 at one end of the first rotating arm 102 and the second rotating arm 202 respectively, and after the hand pulls the trigger (trigger 405), the trigger (trigger 405) links 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 limiting part 407 is pulled out of the limiting hole 50, the spring 403 is in a compressed state, the locking action of the locking member on the first rotating disc 101 and the second rotating disc 201 is released, and the first rotating disc 101 and the second rotating disc 201 can rotate relative to the pin shaft 40, the hand rotates the first rotating arm 102 and the second rotating arm 202 and moves them towards each other until the first rotating arm 102 and the second rotating arm 202 are attached to each other, during the unfolding and folding of the entire folding structure 100, a person's hands are held at the end holding area 60 of the first rotating arm 102 and the second rotating arm 202 respectively, and during the entire operation process, the end of the first rotating arm 102 and the second rotating arm 202 is held by a single hand of the human body respectively, and the first rotating arm 102 and the second rotating arm 202 can be stressed, and there is no problem of uneven stress or smooth folding.

[0159] When the folding structure 100 is in the folded state, the first limiting groove 104 and the second limiting groove 204 are staggered with each other, at this time, the limiting hole 50 is not formed, and 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 the end thereof will be in contact with the outer circumferential surface of the first rotating disc 101 or the second rotating disc 201, and in specific design, if the locking pin 401 is arranged 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 be in contact with the outer circumferential surface of the second rotating disc 201, and if the locking pin 401 is arranged 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 be in contact with the outer circumferential surface of the first rotating disc 101.

[0160] When the folding structure 100 is converted from the folding state to the unfolded state, a person holds the holding area 60 at one end of the first rotating arm 102 and the second rotating arm 202 respectively, and pulls the end of the first rotating arm 102 and the second rotating arm 202 to the two sides respectively. At this time, the first rotating disc 101 and the second rotating disc 201 can rotate relative to the pin shaft 40 until the first limiting slot 104 and the second limiting slot 204 are coaxial to form the 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, so that the folding structure 100 can achieve the effect of being locked after being unfolded.

[0161] Embodiment 3

[0162] Referring to FIGS. 20 to 23, based on the same technical concept, the embodiment of the present application provides a folding chair 200, which comprises the rotating folding structure 100 in the above-mentioned embodiment 1 or embodiment 2.

[0163] A front leg rod 210, a rear leg rod 220, a front seat rod 230, and a back rod 240 are respectively inserted into the first connecting arm 102a and the second connecting arm 202a.

[0164] A first pull rope 250, one end of which extends into and is connected to the front leg rod 210, and the other end of which extends into and is connected to the front seat rod 230.

[0165] A second pull rope 260, one end of which extends into and is connected to the rear leg rod 220, and the other end of which extends into and is connected to the back rod 240.

[0166] A chair pocket 270, which is supported by the four corners of the chair pocket 270 through two front seat rods 230 and two back rods 240 respectively.

[0167] It should be noted that only the rotating folding structure 100 in the embodiment 1 is shown in the drawing of the folding chair 200 of the present embodiment. After the folding chair 200 adopts the above-mentioned folding structure 100, the end of the first rotating arm 102 and the second rotating arm 202 is held by a single hand of a person when the folding chair 200 is folded and unfolded, and the force is uniform, so that the folding is smooth.

[0168] In addition, in the present embodiment, the front leg rod 210, the rear leg rod 220, the front seat rod 230, and the back rod 240 on the first rotating arm 102 are connected through the easy-to-unfold structure 300, and similarly, the front leg rod 210, the rear leg rod 220, the front seat rod 230, and the back rod 240 on the second rotating arm 202 are connected through the easy-to-unfold structure 300.

[0169] Referring to FIGS. 24-27, the easy-to-deploy structure 300 includes a support rod 320 rotatably mounted on a mounting body 310, wherein the mounting body 310 is provided with a plug-in portion 3101, and one end of the support rod 320 is a plug-in end 3201 adapted to be inserted into the plug-in portion 3101.

[0170] It should be noted that in the present embodiment, the mounting body 310 is configured as the first connecting arm 102a or the second connecting arm 202a in the above-described embodiments, and the support rod 320 is configured as the front leg rod 210 or the rear leg rod 220 or the front seat rod 230 or the rear back rod 240.

[0171] Further, one of the plug-in portion 3101 and the plug-in end 3201 is provided with a pivot 330, and the other of the plug-in portion 3101 and the plug-in end 3201 is provided with a guide slot 340 corresponding to the pivot 330, and the pivot 330 and the guide slot 340 are in sliding fit, wherein the plug-in direction of the support rod 320 relative to the plug-in portion 3101 is consistent with the extension direction of the guide slot 340, and when the plug-in end 3201 of the support rod 320 is extracted from the plug-in portion 3101, the support rod 320 can be rotated relative to the mounting body 310, thereby forming a folded and collapsed state, and after the support rod 320 is extracted from the mounting body 310, the support rod 320 is converted to the folded and collapsed state, or during the process that the support rod 320 is gradually rotated from the folded and collapsed state to the unfolded state, the pivot 330 and the guide slot 340 in mutual sliding fit always link the rotation of the support rod 320 and the mounting body 310, and in this process, the support rod 320 does not separate from the mounting body 310, and when the pivot 330 and the guide slot 340 slide relative to each other, it indicates that the distance between the plug-in end 3201 of the support rod 320 and the plug-in portion 3101 of the mounting body 310 changes, so as to facilitate the folding and collapsing or unfolding of the support rod 320 relative to the mounting body 310, but the center axis of the plug-in portion 3101 and the center axis of the plug-in end 3201 are in the same plane, and when the center axis of the plug-in portion 3101 and the center axis of the plug-in end 3201 form an included angle, it indicates that the support rod 320 is in the folded state, and when the center axis of the plug-in portion 3101 and the center axis of the plug-in end 3201 are in the same straight line, it indicates that the support rod 320 is in the unfolded state, and since the center axis of the plug-in portion 3101 and the center axis of the plug-in end 3201 are in the same plane, when the support rod 320 is converted from the folded state to the unfolded state, the plug-in end 3201 and the plug-in portion 3101 can be automatically aligned, and the support rod 320 is unfolded smoothly.

[0172] In this embodiment, the pivot 330 is installed on the insertion part 3101, the guide groove 340 is arranged on the insertion end 3201, one end of the guide groove 340 is the first limiting end 3401, 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;

[0173] When the pivot 330 slides to the second assembly position, at this time, the pivot 330 slides to the second limiting end 3402, the insertion end 3201 can rotate relative to the insertion part 3101 in the first direction through the pivot 330, and the support rod 320 is in the second assembly state (folding and closing state);

[0174] When the support rod 320 is converted from the folding and closing state to the expanded state, the insertion end 3201 can rotate relative to the insertion part 3101 in the second direction through the pivot 330, and the sliding path of the pivot 330 along the guide groove 340 provides butt joint guidance for the insertion of the insertion end 3201 into the insertion part 3101.

[0175] The insertion part 3101 is provided with a avoiding port 3102, when the support rod 320 is rotated from the expanded state to the folding and closing state or from the folding and closing state to the expanded state, the avoiding port 3102 provides a rotating avoiding space for the insertion end 3201;

[0176] Specifically, the number of avoiding ports 3102 on the insertion part 3101 is two, the two avoiding ports 3102 are asymmetric structures, the depth of the avoiding port 3102 close to the installation body 310 is greater than the depth of the avoiding port away from the installation body 310, so as to define the first direction as the rotating direction towards the installation body 310, and the second direction as the rotating direction away from the installation body 310;

[0177] After the first direction is defined by the avoiding port 3102, when the support rod 320 rotates in the first direction and is in the second assembly state (folding and closing state), the support rod 320 tends to be attached to the surface of the installation body 310, so as to form a bundle shape.

[0178] In addition, the large-depth avoiding opening 3102 close to the mounting body 310 provides a large rotating avoiding space for the support rod 320, and the folding angle of the support rod is large. Conversely, if the support rod 320 rotates away from the mounting body 310, the small-depth avoiding opening cannot provide a large avoiding space, and the folding angle of the support rod 320 is small. In this way, the anti-fumble effect is achieved, and the user can intuitively understand that the rotating and folding direction of the support rod 320 is towards the mounting body 310. Moreover, after the support rod 320 is folded, it is attached to the surface of the mounting body 310 to form a bundle. When the number of support rods 320 is multiple, the multiple support rods 320 can be folded and attached to the surface of the mounting body 310. In this way, the volume of the entire structure after folding can be reduced, and the bundle can be conveniently constrained.

[0179] 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 is stopped relative to the insertion part 3101. Specifically, in this state, the pivot 330 limits the support rod 320, and the support rod 320 cannot further extend into the inside of the insertion part 3101 when stressed. At the same time, the support rod 320 cannot rotate relative to the insertion part 3101, thereby achieving the high-strength support effect after unfolding.

[0180] 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 extracted from the insertion part 3101, and the insertion end 3201 can rotate in the avoiding space provided by the avoiding opening 3102 with the pivot 330 as the center. The support rod 320 can rotate relative to the mounting body 310 until the peripheral surface of the support rod 320 contacts the bottom surface of the avoiding opening 3102. At this time, the support rod 320 is in the folded state relative to the mounting body 310.

[0181] Further, in the embodiment, the distance L1 between the center of the pivot 330 and the bottom of the avoiding opening 3102 is smaller than the length L2 of the guide slot 340. The advantage of this 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 slot 340; when the insertion end 3201 of the support rod 320 is fully extracted from the insertion part 3101, the pivot 330 is located at the second limiting end 3402 of the guide slot 340; when the insertion end 3201 of the support rod 320 is fully extracted from the insertion part 3101, the pivot 330 reaches the second limiting end 3402, and the end surface of the insertion end 3201 completely exits the insertion part 3101 and enters the avoiding space. At this time, the end surface of the insertion end 3201 can be located in the space where the avoiding opening 3102 is located. In this case, the insertion end 3201 can rotate around the pivot 330 in the space provided by the avoiding opening 3102.

[0182] Further, in the 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. The mounting body 310 is convenient for inserting multiple support rods 320.

[0183] The elastic member 350 is arranged between the support rod 320 and the mounting body 310. The elastic member 350 is preferably a cable. One end of the elastic member 350 extends into one support rod 320 and is connected thereto. The other end of the elastic member 350 extends into the interior of the mounting body 310 and extends into another support rod 320 and is connected thereto. The elastic member 350 is the first cable 250 or the second cable 260.

[0184] Specifically, the end of the support rod 320 is generally provided with a buckle cap 360, and the end of the elastic member 350 extends into the inside of the support rod 320 and is connected with the buckle cap 360. Taking two support rods 320 installed on the mounting body 310 as an example, after the elastic member 350 is installed between the two support rods 320, the two ends of the elastic member 350 respectively play a traction role on the two support rods 320. When the support rod 320 is not inserted into the mounting body 310, the support rod 320 will also be pulled by the elastic member 350. When the support rod 320 is inserted into the insertion part 3101, the elastic member 350 is in a natural or stretched state. When the support rod 320 is in a rotating folding state relative to the mounting body 310, the elastic member 350 is in an elastic tension state. When the support rod 320 is converted from the folding state to the unfolded state, under the elastic tension of the elastic member 350, the insertion end 3201 of the support rod 320 will automatically insert into the insertion part 3101. Through the cooperation of the pivot 330 and the guide groove 340 and the structural design of the elastic member 350, when the support rod 320 is in the folding state, it can realize automatic alignment and automatic insertion with the insertion part 3101 when the external constraint is released.

[0185] In summary, the elastic member 350 is arranged between the support rod 320 and the frame member and can be bent. When the support rod 320 is folded, the elastic member 350 is in a stretched energy storage state.

[0186] When the external constraint is released, the contraction force of the elastic member 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 member 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 along the insertion direction.

[0187] The application will be described in detail below in combination with the specific use state of the easy-to-unfold structure 300.

[0188] The easy-to-unfold structure 300 of the application includes a folding state and an unfolded state. In the folding 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 folding state relative to the mounting body 310, the elastic member 350 is in a stretched state, which will generate a pulling force on the support rod 320. Therefore, the mounting body 310 will be provided with a restraint band (not shown) to bundle and fix the support rod 320.

[0189] Specifically, in the process of the easy-to-unfold structure 300 transforming from the folded state to the unfolded state, the support rod 320 rotates around the mounting body 310 connected thereto and rotates to the position where the insertion end 3201 is opposite to the insertion portion 3101. At this time, the elastic member 350 is in a stretched state, and the insertion end 3201 of the support rod 320 is automatically inserted into the insertion portion 3101 under the elastic pulling force of the elastic member 350.

[0190] Further, when the easy-to-unfold structure 300 is in the folded state, the pivot 330 is located at the second limiting end 3402, and when the easy-to-unfold structure 300 is in the unfolded state, the pivot 330 is located at the first limiting end 3401.

[0191] When the easy-to-unfold structure 300 transforms from the folded state to the unfolded state, the support rod 320 rotates around the mounting body 310 with the pivot 330 as the center under the elastic pulling force of the elastic member 350 until the insertion end 3201 of the support rod 320 is opposite to the insertion portion 3101. At the same time, the insertion end 3201 of the support rod 320 is inserted into the insertion portion 3101 under the elastic pulling force of the elastic member 350. In this process, the pivot 330 slides relative to the guide groove 340 from the second limiting end 3402 to the first limiting end 3401.

[0192] When the easy-to-unfold structure 300 transforms from the unfolded state to the folded state, the pivot 330 slides relative to the guide groove 340 from the first limiting end 3401 to the second limiting end 3402, and the support rod 320 rotates around the frame 310 member with the pivot 330 as the center. The elastic member 350 is in a stretched state, and the avoiding opening 3102 provides the avoiding space required for the rotation of the insertion end 3201.

[0193] In summary, the easy-to-unfold structure 300 is used for the connection position of the support rod 320 and the mounting body 310. The insertion end 3201 of the support rod 320 and the insertion portion 3101 of the mounting body 310 are connected through the rotation of the pivot 330. The insertion end 3201 of the support rod 320 or the insertion portion 3101 of the mounting body 310 is provided with the guide groove 340 that slides with the pivot 330. Moreover, the insertion portion 3101 is provided with the avoiding opening 3102. When the support rod 320 is pulled out from the insertion portion 3101 by a certain distance until the pivot 330 slides to the second limiting end 3401 of the guide groove 340, the support rod 320 rotates around the insertion portion 3101 with the pivot 330 as the center and is in the folded state. The avoiding opening 3102 provides the avoiding space required for the rotation out of the insertion portion 3101 to the insertion end 3201. The support rod 320 in the folded state and the insertion portion 3101 are in the state of rotational connection but not separated.

[0194] When the support rod 320 needs to be unfolded, the support rod 320 is reversely rotated with the pivot 330 as the center relative to the insertion part 3101, and when the insertion end 3201 of the support rod 320 is opposite to the insertion part 3101, the insertion end 3201 is inserted into the insertion part 3101, at this time, the pivot 330 slides to the first limiting end 3401 of the guide groove 340, the pivot 330 limits the support rod 320, and the support rod 320 cannot further extend into the inside of the insertion part 3101 when being stressed, and meanwhile the support rod 320 cannot be rotated relative to the insertion part 3101, so that the high-strength supporting effect after unfolding is achieved. In the conversion process of the support rod 320 from the folded state to the unfolded state, the insertion end 3201 of the support rod 320 and the insertion part 3101 of the mounting body 310 do not need to be artificially connected, and through the cooperation of the pivot 330 and the guide groove 340, the insertion end 3201 of the support rod 320 can be automatically aligned with the insertion part 3101 after being unfolded, so that the assembly of the support rod 320 and the mounting body 310 is convenient and efficient.

[0195] In addition, the elastic member 350 is arranged between the support rod 320 and the mounting body 310, the elastic member 350 is in a stretched state when the support rod 320 is in the folded state, and under the elastic tension of the elastic member 350, the insertion end 3201 of the support rod 320 is automatically inserted into the insertion part 3101 when the support rod 320 is converted from the folded state to the unfolded state. Through the cooperation of the pivot 330 and the guide groove 340 and the structural design of the elastic member 350, when the support rod 320 is in the folded state, the support rod 320 can be automatically aligned with the insertion part 3101 and automatically inserted when the external constraint is released.

[0196] During the folding process of the entire folding chair, the ends of the first rotating arm 102 and the second rotating arm 202 are respectively held by a single hand of a human body, the stress is uniform, and the folding is smooth; in addition, the front leg rod 210, the rear leg rod 220, the front seat rod 230, and the back rod 240 movably installed on the first rotating arm 102 and the second rotating arm 202 are also convenient to fold, and when each rod piece is reset, the rod piece can be automatically aligned and automatically inserted, so that the operation is convenient and fast.

[0197] Embodiment 4

[0198] Referring to FIGS. 28 and 29, based on the same technical concept, the embodiment of the present application provides a folding chair 200 (the chair pocket is not shown in the embodiment), which comprises the rotating folding structure 100 in the above-mentioned embodiment 1 or embodiment 2. It should be noted that only the rotating folding structure 100 in the embodiment 1 is shown in the drawing of the folding chair 200 in the embodiment. After the folding chair 200 adopts the folding structure 100, during the folding and unfolding of the entire folding chair 200, the ends of the first rotating arm 102 and the second rotating arm 202 are respectively held by a single hand of a human body, the stress is uniform, and the folding is smooth.

[0199] In addition, in the embodiment, the front leg rod 210, the rear leg rod 220, the front seat rod 230, and the rear back rod 240 on the first rotating arm 102 are connected with the easy-to-unfold structure 300, and similarly, the front leg rod 210, the rear leg rod 220, the front seat rod 230, and the rear back rod 240 on the second rotating arm 202 are connected with the easy-to-unfold structure 300.

[0200] Referring to FIGS. 30-34, the difference between the embodiment and the above-mentioned embodiment 3 is that the easy-to-unfold structure 300 in the embodiment is different from the easy-to-unfold structure in the embodiment 3 in structural design. The difference between the easy-to-unfold structure 300 in the embodiment and the easy-to-unfold structure in the embodiment 3 is that the insertion part 3101 is provided with an insertion hole 3103, the side surface of the insertion 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.

[0201] 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 is converted from the second assembly state to the first assembly state, the sliding guide part 3202 slides along the support guide part 3400 under the tension of the elastic member 350, guiding the insertion end 3201 to align and insert into the insertion hole 3103.

[0202] 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 and collapsed state relative to the mounting body 310.

[0203] In addition, when the support rod 320 is in the folded and collapsed state relative to the mounting body 310, the elastic member 350 is in a stretched state. When the support rod 320 is subjected to a binding constraint force, the support rod 320 remains in the folded and collapsed state unchanged. When the binding constraint force disappears, the elastic member 350 drives the support rod 320 to flip over. After the insertion end 3201 aligns and inserts into the insertion hole 3103, the support rod 320 is in an unfolded state relative to the mounting body 310.

[0204] Further, referring to FIG. 31, the insertion part 3101 is provided with a guide groove 3104, one end of the guide groove 3104 communicates with the insertion hole 3103. When the support rod 320 rotates relative to the insertion part 3101, the elastic member 350 can be guided into or out of the guide groove 3104.

[0205] The support guide part 3400 is arranged on the insertion part 3101 and faces the side of the mounting body 310. When the support rod is converted from the unfolded state to the folded state, the support rod 320 tends to be attached to the surface of the mounting body 310 to form a compact folding state. Since the guide groove 3104 is arranged at the support guide part 3400, the support rod 320 will drive the elastic member 350 to enter or exit the guide groove 3104 regardless of whether it is unfolded or folded. This can prevent mistakes and enable the user to intuitively understand that the folding direction of the support rod 320 is towards the mounting body 310. Moreover, after the support rod 320 is folded, it is attached to the surface of the mounting body 310 to form a bundle. 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 on the mounting body 310 is two or more. When the number of support rods 320 is multiple, the multiple support rods 320 can be folded and attached to the surface of the mounting body 310. This can reduce the volume of the entire structure after folding and facilitate bundling and restraint.

[0206] Further, the support guide part 3400 includes a planar guide segment 3400a and an arc surface guide segment 3400b, and the arc surface guide segment 3400b is connected to the insertion port 3103. The surface of the sliding guide part 3202 is arc-shaped. When the support rod 320 is converted from the folded state to the unfolded state, the elastic member 350 drives the insertion end 3201 to sequentially pass through the planar guide segment 3400a and the arc surface guide segment 3400b. The insertion end 3201 is flipped along the track of the arc surface guide segment 3400b and inserted into the insertion port 3103, thereby realizing 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.

[0207] Further, the elastic member 350 is preferably an elastic cable. One end of the elastic member 350 extends into one support rod 320 and is connected thereto. The other end of the elastic member 350 extends into the interior of the mounting body 310 and extends into another support rod 320 and is connected thereto.

[0208] In this embodiment, referring to FIGS. 32 and 33, 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 is stopped relative to the insertion part 3101. At this time, the easy-to-unfold structure 300 is in the unfolded state.

[0209] When the insertion end 3201 is pulled out of 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 the folded state, and the elastic member 350 is in the stretched state.

[0210] Specifically, when the easy-to-unfold structure 300 is transformed from the unfolded state to the folded state, the insertion end 3201 is extracted from the insertion part 3101, and then the support rod 320 is rotated, the support rod 320 is in the folded state, the elastic member 350 is guided into the guide groove 3104, and at the same time, the elastic member 350 is in the stretched state;

[0211] When the easy-to-unfold structure 300 is transformed from the folded state to the unfolded state, under the pulling force of the elastic member 350, the support rod 320 rotates towards the installation main body 310, the sliding guide part 3202 at the end of the support rod 320 slides relative to the support guide part 3400 until the insertion end 3201 of the support rod 320 is inserted into the insertion part 3101, and the support rod 320 is completely in the unfolded state. Because the support guide part 3400 includes the planar guide segment 3400a and the arc surface guide segment 3400b, the arc surface guide segment 3400b is connected with the insertion port 3103, and in the unfolding process of the support rod 320, the sliding guide part 3202 at the end of the support rod 320 sequentially contacts the planar guide segment 3400a and the arc surface guide segment 3400b, and the arc surface guide segment 3400b can smoothly and continuously guide the sliding guide part 3202 into the insertion port 3103.

[0212] In order to ensure the stability and strength of the support rod 320 after unfolding, referring to FIG. 34, a limiting step 3105 is arranged on the inner wall of the insertion port 3103, 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 limited by the limiting step 3105 cannot be further inserted into the insertion part 3101, and the support rod 320 can be stably supported at the insertion part 3101 but can be extracted.

[0213] In summary, the easy-to-deploy structure 300 is used to support the connection position of the support rod 320 and the mounting body 310. Normally, 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 is stopped relative to the insertion part 3101. At this time, the easy-to-deploy structure 300 is in the deployed state. When the easy-to-deploy structure 300 is folded, the insertion end 3201 of the support rod 320 is pulled out of the insertion part 3101, and the support rod 320 can rotate relative to the insertion part 3101. The elastic member 350 is smoothly introduced into the guide groove 3104 from the insertion port 3103 and is in a stretched state. When the easy-to-deploy structure 300 changes from the folded state to the deployed state, the elastic member 350 resets. Under the action of the pulling force of the elastic member 350, the sliding guide part 3202 at the end of the support rod 320 contacts the support guide part 3400 on the side of the mounting body 310 and slides relative to the support guide part 3400 until the insertion end 3201 of the support rod 320 is inserted into the insertion port 3103 of the insertion part 3101, thereby realizing automatic resetting of the support rod 320. After the easy-to-deploy structure is used, the insertion end 3201 of the support rod 320 does not need to be manually connected between the insertion end 3201 of the support rod 320 and the insertion part 3101 of the mounting body 310 during the conversion process of the support rod 320 from the folded state to the deployed state. Under the action of the pulling force of the elastic member 350, the sliding guide part 3202 and the support guide part 3400 are slidably connected, the insertion end 3201 of the support rod 320 can be automatically aligned with the insertion part 3101 after the support rod 320 is deployed, and the support rod 320 and the mounting body 310 are conveniently and efficiently assembled.

[0214] In addition, when the support rod 320 changes from the folded state to the deployed state, the elastic member 350 is transferred from the guide groove 3104 to the insertion port 3103 and resets. The guide groove 3104 plays a resetting and guiding role for the elastic member 350, ensuring the stability of the pulling direction of the elastic member 350. When the support rod 320 is connected to the insertion part 3101, the support rod 320 is accurately and stably connected.

[0215] Embodiment 5

[0216] Referring to FIGS. 35 and 36, based on the same technical concept, the present embodiment provides a storage box frame 400, which comprises the rotation folding structure 100 in the above-mentioned embodiment 1 or embodiment 2, a support leg 410 inserted into the first rotation arm 102 and the second rotation arm 202, respectively, a support block 420 arranged on the surface of the first rotation arm 102 and the second rotation arm 202, and the easy-to-deploy structure 300 shown in the embodiment 3, which is used to connect the support leg 410 with the first rotation arm 102 and the second rotation arm 202.

[0217] When the storage box frame 400 is used, the storage box 430 is placed on the support block 420, and the surface of the support block 420 is provided with a friction surface 440. When the storage box 430 is placed, the friction surface 440 can play a role of preventing sliding.

[0218] The storage box frame 400 can be folded and unfolded during use. It should be noted that the drawings of the storage box frame 400 in the 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 box frame 400 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 a human body, the force is uniform, the folding is smooth, the supporting leg 410 can be folded and unfolded, and when the external constraint is removed, the supporting leg 410 can be automatically aligned and inserted with the insertion part of the first rotating arm 102 and the second rotating arm 202.

[0219] Embodiment 6

[0220] Referring to FIGS. 37 and 38, based on the same technical concept, the embodiment of the application provides a storage box frame 400, which comprises the rotating folding structure 100 in the above-mentioned embodiment 1 or embodiment 2, the supporting leg 410 inserted into the first rotating arm 102 and the second rotating arm 202, the supporting block 420 arranged on the surface of the first rotating arm 102 and the second rotating arm 202, and the supporting leg 410 connected with the first rotating arm 102 and the second rotating arm 202 through the easy-unfolding structure 300 shown in embodiment 4. When the storage box frame 400 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 a human body, the force is uniform, the folding is smooth, the supporting leg 410 can be folded and unfolded, and when the external constraint is removed, the supporting leg 410 can be automatically aligned and inserted with the insertion part of the first rotating arm 102 and the second rotating arm 202.

[0221] Embodiment 7

[0222] Referring to FIGS. 39 and 40, based on the same technical concept, the embodiment of the application provides a table 500, which comprises the rotating folding structure 100 in the above-mentioned embodiment 1 or embodiment 2, the lower supporting leg 510 and the upper supporting rod 520 inserted into the first rotating arm 102 and the second rotating arm 202, the supporting assembly 530 connected with the upper supporting rod 520, and the table plate unit 540 arranged above the supporting assembly 530. It should be noted that the drawings of the table 500 in the embodiment only show the rotating folding structure 100 in embodiment 1.

[0223] In the embodiment, the supporting assembly 530 comprises:

[0224] The insertion head 5301 can be inserted into the end of the upper supporting rod 520;

[0225] The lower buckle plate 5302 is installed at one end of the insertion head 5301;

[0226] The table plate supporting rod 5303 is buckled with the lower buckle plate 5302.

[0227] Further, the bottom of the table plate unit 540 is provided with an upper buckle plate 550. When the table is assembled, the lower supporting leg 510 and the upper supporting rod 520 are respectively inserted with the first rotating arm 102 and the second rotating arm 202. The insertion head 5301 is inserted with the end of the upper supporting rod 520. The table plate supporting rod 5303 is buckled with the lower buckle plate 5302 on the insertion head 5301. The table plate supporting rod 5303 is supported on the bottom of the table plate unit 540. The upper buckle plate 550 on the bottom of the table plate unit 540 is buckled with the table plate supporting rod 5303.

[0228] The table 500 is composed of the detachable table plate unit 540, the supporting assembly 530, the folding structure 100, the lower supporting leg 510 and the upper supporting rod 520. The folding structure 100 is the main supporting frame of the table. When the folding structure 100 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 a human body. The force is uniform, and the folding is smooth.

[0229] Embodiment 8

[0230] Referring to FIGS. 41 to 50, based on the same technical concept, the embodiment of the present application provides a table 600, which comprises the rotating folding structure 100 in the above-mentioned embodiment 1 or embodiment 2, and a folding table plate 700 laid on the top of the rotating folding structure 100. In the drawings of the present embodiment, the rotating folding structure 100 in the embodiment 1 is shown (wherein the locking assembly 30 is not assembled).

[0231] The first connecting arm 102a and the second connecting arm 202a of the rotating folding structure 100 are respectively inserted with the upper supporting arm 610 and the lower supporting arm 620. The upper supporting arm 610 and the lower supporting arm 620 are connected with the first connecting arm 102a and the second connecting arm 202a by using the easy-to-unfold structure 300 shown in the embodiment 3 or the embodiment 4. In the drawings of the present embodiment, the easy-to-unfold structure 300 in the embodiment 3 is shown. One end of the upper supporting arm 101 is connected with the linkage 630. The unit beams 6201 and 6202 are respectively slidably installed on the linkage 630, i.e., the unit beams 6201 and 6202 can slide relative to the linkage 630.

[0232] In addition, the linkage 630 is also relatively rotatably connected with the upper supporting arm 610.

[0233] Referring to the unfolded state shown in FIG. 41, the unit beams 6201 and 6202 are sleeved with each other to form a supporting beam 6200. The two ends of the supporting beam 6200 are installed on the linkage 630 and connected with the upper supporting arm 610 through the linkage 630, so as to construct a supporting platform for supporting external components on the top of the rotating folding structure 100 through the supporting beam 620.

[0234] In actual use, the external component can be a table top or a storage box or other items that can be erected between two horizontal bars.

[0235] Wherein, the unit beams 6201 and 6202 in the unfolded state as shown in FIG. 41 can be separated when an external operating force is applied, and the unit beams 6201 and 6202 operated to be separated are as shown in FIG. 42.

[0236] Continuing to apply the external operating force for folding, the unit beams 6201 and 6202 operated to be separated are driven to rotate and approach each other, and the two unit beams 6201 and 6202 approaching each other drive the linkage 630 to rotate relative to the upper support arm 610, and further drive the rotary folding structure 100 to rotate and fold, and the state after folding is shown in FIG. 44.

[0237] In short, during folding operation, the external force operates the two sleeved unit beams 6201 and 6202 to slide away from each other along the linkage 630, and approach each other, and the two unit beams 6201 and 6202 approaching each other drive the linkage 630 to rotate relative to the upper support arm 610, and further drive the rotary folding structure 100 to rotate and fold.

[0238] The unit beams 6201 and 6202 in the rotary folding state are located at the back side of the upper support arm 610 and approach the corresponding upper support arm 610 respectively, forming a compact folding shape, and further, the hinge arm 6302 of the linkage 630 has an avoiding slot 6302a, and the geometric shape (such as an arc-shaped groove or a U-shaped notch) of the avoiding slot 6302a matches the upper support arm 610, so that the upper support arm 610 in the rotary folding state is embedded in the avoiding slot 6302a, so that the unit beams 6201 and 6202 approach the corresponding upper support arm 610 respectively, forming a more compact folding shape, and at this time, it is more preferable that the central axis of the unit beams 6201 and 6202 is parallel to the central axis of the upper support arm 610.

[0239] Further, the upper support arm 610 can be folded and folded on the base of the main support 10.

[0240] At this time, referring to FIG. 5, the unit beams 201 and 202 approaching the upper support arm 101 can be folded and folded on the base of the rotary folding structure 100 together with the upper support arm 101.

[0241] In addition, the lower support arm 620 of the rotary folding structure 100 can also be folded and folded on the base of the rotary folding structure 100.

[0242] At this time, as shown in FIG. 45, the lower support arm 620 is folded and turned over to the base of the rotary folding structure 100, and the unit beams 6201 and 6202 are folded and turned over to the base of the rotary folding structure 100 together with the upper support arm 610, forming a bundle-shaped folded state (as shown in FIG. 46), in which an external restraint band such as a restraint rope can be used for binding and fixing.

[0243] Continuing to refer to FIGS. 41-45, the support beam 6200 is further provided with a first elastic member 660, one end of which is connected to one unit beam 6201 of the support beam 6200, and the other end is connected to the other unit beam 6202. The first elastic member 660 is adapted to apply a mutual abutting pulling force to the two unit beams 6201, 6202 that are sleeved with each other. When the end portions of the two unit beams 6201, 6202 are abutted, the pulling force generated by the first elastic member 660 can cause the two unit beams 6201, 6202 to be quickly sleeved. In the present embodiment, the first elastic member 660 can be implemented as an elastic rope.

[0244] During the unfolding process, when the end portions of the unit beams 6201 and 6202 are brought close by manual operation, the first elastic member 660 provides a continuous abutting pulling force, so that the two unit beams 6201 and 6202 can be quickly sleeved and locked without the need for fine adjustment, forming the support beam 6200 (as shown in FIG. 41). This greatly improves the unfolding efficiency and avoids the cumbersome operation of manual alignment and insertion. When folding, the user needs to exert an external operating force to overcome the pulling force of the first elastic member 660 to separate the unit beams 6201 and 6202 (as shown in FIG. 42).

[0245] Further referring to FIGS. 41, 42 and 47, the linkage member 630 includes a hinged arm 6302 and a sleeve 6301 fixedly connected to the hinged arm 6302. The hinged arm 6302 is movably connected to the upper support arm 610, such as being movably hinged to the upper support arm 610. The sleeve 6301 is slidably sleeved on the outer periphery of the unit beams 6201 and 6202.

[0246] Further, the end of the unit beam 6201, 6202 is fixedly installed with a limiting end 670, and one of the limiting end 670 and the sleeve 6301 is provided with a limiting groove 6701, and the other is provided with a limiting protrusion 6304 matched with the limiting groove 6701. Specifically, the limiting groove 6701 is arranged on the limiting end 670, and the limiting protrusion 6304 is arranged on the sleeve 6301. After the two unit beams 6201, 6202 are butted to form the support beam 6200, the limiting end 670 is close to the sleeve 6301, and the unit beams 6201, 6202 are limited and matched with the sleeve 6301 through the limiting groove 6701 and the limiting protrusion 6304. The assembled support beam 6200 is circumferentially limited by the sleeve 6301 and cannot rotate in the sleeve 6301. When the two unit beams 6201, 6202 are separated, the unit beams 6201, 6202 slide in the sleeve 6301, the limiting end 670 at the end of the unit beam 6201, 6202 is away from the sleeve 6301, and the circumferential limitation of the sleeve 6301 on the unit beam 6201, 6202 is released.

[0247] Further, the linkage 630 further comprises a connecting cap 6303, wherein the connecting cap 6303 is movably connected with the upper support arm 610 and can rotate around the upper support arm 610, and the hinged arm 6302 is movably connected with the connecting cap 6303, and the connecting cap 6303 provides an additional rotation degree of freedom.

[0248] It can be understood that when the two unit beams 6201, 6202 are moved close to each other, it is difficult for the force applied by the hand to be a "perfect" rotation force. In actual operation, some lateral force may be accompanied, and the connecting cap 6303 can freely rotate on the upper support arm 610. When the action of moving the unit beams 6201, 6202 close to each other has these "inclined forces" (lateral components), the connecting cap 6303 can slightly rotate following the "inclined force" to make the whole folding action smoother.

[0249] In this way, the above-mentioned hinged arm 6302 provides a swing degree of freedom of the rotation direction of the unit beam 6201, 6202, and the connecting cap 6303 provides a 360° rotation degree of freedom around the axis of the upper support arm 610, and the two together constitute a universal movable mechanism.

[0250] As can be seen, the linkage 630 is more preferably movably connected with the upper support arm 610 in a universal manner, and those skilled in the art should know that the universal movable mechanism is not limited to the combination structure of the hinged arm 6302 and the connecting cap 6303 in the embodiment, but can be replaced by other universal movable mechanisms, such as replacing the connecting cap 6303 with a spherical joint socket and changing the end of the hinged arm 6302 into a ball head, or connecting the hinged arm 6302 with the connecting cap 6303 through a cross shaft.

[0251] Further, referring to Fig. 41, the base of the rotating folding structure 100 includes the first frame member 10 and the second frame member 20 connected to the first frame member 10, i.e., the first frame member 10 and the second frame member 20 can rotate relative to each other, and when folding, the two unit beams 6201, 6202 that are close to each other can drive the first frame member 10 and the second frame member 20 to rotate and fold relative to each other.

[0252] Specifically, referring to Fig. 43, the two ends of the first frame member 10 and the second frame member 20 are respectively connected to the linkage 630, the unit beam 6201 is connected to the linkage 630 at the end of the second frame member 20, and the unit beam 6202 is connected to the linkage 630 at the end of the first frame member 10, and the folding direction of the unit beam 6201 and the unit beam 6202 is the same as the folding direction of the first frame member 10 and the second frame member 20.

[0253] That is, the first frame member 10 is connected to one linkage 630 at each end, the linkage 630 is slidingly installed on the unit beam 6202, the second frame member 20 is connected to one linkage 630 at each end, and the linkage 630 is slidingly installed on the unit beam 6201, and the user applies an external force to make the separated unit beams 6201 and 6202 close to each other, and the close unit beams 6201, 6202 drive the linkage 630 connected thereto.

[0254] The close action of the unit beam 6201 drives the linkage 630 at the end of the second frame member 20 to rotate and drives the second frame member 20 to rotate;

[0255] The close action of the unit beam 6202 drives the linkage 630 at the end of the first frame member 10 to rotate and drives the first frame member 10 to rotate.

[0256] In this way, the user only needs to complete one action of closing the unit beams to synchronously drive the folding of the entire main support.

[0257] When the rotating folding structure 100 is unfolded, the plurality of upper support arms 610 form support at the bottom of the support platform, and the plurality of lower support arms 620 form support on the ground.

[0258] Correspondingly, with reference to FIGS. 48-50, when the table 600 is unfolded, first, the folding structure 100 is unfolded in the manner described in the foregoing embodiments, the bottom of the folding table 700 is provided with a clamping groove 710, the top of the supporting head 660a of the folding structure 100 is provided with a clamping block 6602, after the folding structure 100 is unfolded, the unit beams 6201, 6202 are sleeved with each other to form an integral rigid supporting beam 6200, the two ends of the supporting beam 6200 are connected with the upper supporting arm 610 through the rotating member 630 to form a supporting platform at the top of the folding structure 100, when the folding table 700 is laid on the top of the supporting beam 6200, the clamping block 6602 at the end of the supporting beam 6200 is clamped with the clamping groove 710 at the bottom of the folding table 700, and the unfolded folding table 700 can be stably supported by the folding structure 100 at the bottom.

[0259] Finally, it should be noted that: the foregoing embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A rotary folding structure, characterized by, The application relates to a rotation locking device, comprising: a first rotating member and a second rotating member, which are connected by a rotating shaft and can rotate relative to each other; a first constraint part arranged on the first rotating member; a second constraint part arranged on the second rotating member; an elastically-resettable locking body, wherein in an unfolded state, the first constraint part and the second constraint part are coaxial to form a circumferentially-closed constraint hole, the locking body is driven by an elastic force to be embedded in the constraint hole, and the locking body interferes with the inner wall of the constraint hole in a circumferential direction to prevent the first rotating member and the second rotating member from rotating relative to each other; in a folded state, the locking body is separated from the constraint hole, the first rotating member and the second rotating member can rotate relative to each other around the rotating shaft, and the locking body is abutted against the outer circumferential surface of the first rotating member or the second rotating member under the action of the elastic force.

2. The rotary folding structure of claim 1, wherein: The embedding movement direction of the locking body is perpendicular to the axial direction of the rotating shaft.

3. The rotary folding structure of claim 1, wherein: In the folded state, the elastic force always makes the locking body have a movement tendency towards the radial direction of the rotating shaft.

4. The rotary latching structure according to any one of claims 1 to 3, wherein: In the folded state, the first constraint part and the second constraint part are misaligned, and during the conversion from the folded state to the unfolded state, the locking body is continuously pressed against the outer circumferential surface of the first rotating member or the second rotating member under the action of the elastic force. When the first rotating member and the second rotating member rotate relative to each other to a predetermined angle, the spatial positions of the first constraint part and the second constraint part are aligned, the circumferentially-closed constraint hole is automatically formed, the locking body is embedded in the constraint hole under the action of the elastic force and interferes with the inner wall of the constraint hole in the circumferential direction, and the rotation locking is completed.

5. The rotary latching structure according to any one of claims 1 to 3, wherein: In the unfolded state, the first constraint part and the second constraint part are coaxial, during the conversion from the unfolded state to the folded state, a radial unlocking external force is applied to the locking body, the locking body is caused to exit the constraint hole by overcoming the elastic force; the first rotating member and the second rotating member obtain the relative rotation freedom around the rotating shaft, during the relative rotation, the first constraint part and the second constraint part are misaligned in space, and the constraint hole is deconstructed and disappears; after the unlocking external force is removed, the locking body is abutted against the outer circumferential surface of the first rotating member or the second rotating member under the action of the elastic force, and a non-interference state is maintained.

6. A rotary closure structure comprising: The application also relates to a rotation locking device, comprising: a first rotating disc, which comprises a first rotating contact surface and a first limiting groove arranged on the first rotating contact surface; a second rotating disc, which comprises a second rotating contact surface opposite to the first rotating contact surface and a second limiting groove arranged on the second rotating contact surface; a pin shaft, which connects the first rotating disc and the second rotating disc to realize the relative rotation of the two; a locking assembly, which comprises a locking pin, an elastic member and a locking limiting part arranged at the end of the locking pin; wherein the first rotating disc and the second rotating disc have a first position and a second position relative to each other; in the first position, the first limiting groove and the second limiting groove are coaxial in space to form a circumferentially-closed limiting hole, the locking limiting part is stretched into the limiting hole under the action of the elastic force of the elastic member and interferes with the inner wall of the limiting hole in a circumferential direction to prevent the relative rotation of the rotating discs; In the second position, the locking limiting part is disengaged from the limiting hole, the first rotating contact surface and the second rotating contact surface are rotatable relative to the pin shaft, and the locking limiting part is abutted against the outer circumferential surface of the first rotating disc or the second rotating disc when reset.

7. The rotary folding structure of claim 6, wherein: The first rotating disc is fixedly connected with a first rotating arm, and the second rotating disc is fixedly connected with a second rotating arm, wherein the first position and the second position are determined by the relative positions of the first rotating arm and the second rotating arm.

8. The rotary folding structure according to claim 6 or 7, wherein: After the locking limiting part is disengaged from the limiting hole, the end thereof is continuously abutted against the outer circumferential surface of the first rotating disc or the second rotating disc under the elastic force of the elastic member.

9. The rotating folding structure according to claim 8, characterized in that: the locking pin and the elastic member of the locking assembly are both mounted in the internal cavity of the first rotating arm, and the locking pin is adapted to be actuated by a trigger member movably mounted on the outer side of the first rotating arm; or the locking pin and the elastic member of the locking assembly are both mounted in the internal cavity of the second rotating arm, and the locking pin is adapted to be actuated by a trigger member movably mounted on the outer side of the second rotating arm.

10. The rotary folding structure of claim 9, wherein: The trigger member is located at the end holding area of the first rotating arm or the second rotating arm. The trigger member is configured to be triggered when a user holds the end holding area to rotate the first rotating arm or the second rotating arm.

11. The rotary folding structure of claim 10, wherein: The trigger member is a sliding sleeve. The sliding sleeve is sleeved on the first rotating arm or the second rotating arm and connected with the locking pin through a linkage pin.

12. The rotary folding structure of claim 10, wherein: The trigger member is a trigger. One end of the trigger is hinged to the first rotating arm or the second rotating arm through a rotating pin, and the other end extends out of the internal cavity of the first rotating arm or the second rotating arm and is connected with the locking pin through a connecting member.

13. A folding chair, characterized in that It comprises: The rotating folding structure according to any one of claims 1 to 12; front leg rods, rear leg rods, front seat rods, and rear back rods respectively inserted into the first rotating arm and the second rotating arm; a first pull cable, one end of which extends into and is connected with the front leg rod, and the other end of which extends into and is connected with the front seat rod; a second pull cable, one end of which extends into and is connected with the rear leg rod, and the other end of which extends into and is connected with the rear back rod; a chair pocket, four corners of which are respectively supported by two front seat rods and two rear back rods.

14. A storage box holder characterized by comprising: It comprises: The rotating folding structure according to any one of claims 1 to 12; supporting legs respectively inserted into the first rotating arm and the second rotating arm; supporting blocks arranged on the surfaces of the first rotating arm and the second rotating arm; the supporting blocks are adapted to rest on a storage box.

15. A table, characterized in that It comprises: The rotating folding structure according to any one of claims 1 to 12; lower supporting legs and upper supporting rods respectively inserted into the first rotating arm and the second rotating arm; a supporting assembly connected with the upper supporting rod; a table board unit arranged above the supporting assembly.

16. The table of claim 15, wherein, The supporting assembly comprises: a plug-in head adapted to be plugged into the end of the upper supporting rod; a lower buckle plate mounted on the plug-in head; a table board supporting rod buckled and connected with the lower buckle plate.

17. The table of claim 16, wherein, The bottom of the table plate unit is provided with an upper buckle plate, and the table plate supporting rod is supported on the bottom of the table plate unit, and the upper buckle plate and the lower buckle plate are respectively buckled and connected with the table plate supporting rod.

Images