Folding framework and household appliance

Abstract

The invention provides a folding framework and a household appliance. The folding framework comprises a plurality of supporting columns and folding units located among the supporting columns. The folding unit comprises a first rotating part and a second rotating part which are rotatably connected; the end, away from the second rotating piece, of the first rotating piece is rotationally connected with one supporting column, and the end, away from the first rotating piece, of the second rotating piece is rotationally connected with the other supporting column. The folding unit has an unfolded state and a folded state; when the unfolding state and the folding state are switched, the first rotating piece and the second rotating piece rotate relatively to drive the supporting columns to be away from each other or gathered together. In the folding state, the two supporting columns connected with the folding units are in contact with each other; or a folding gap is formed between the two supporting columns connected with the folding unit, and the folding gap is smaller than the sum of the widths of the first rotating piece and the second rotating piece. According to the technical scheme, the occupied space can be reduced to the maximum extent after folding.

Description

Technical Field

[0001] The invention relates to a folding frame and a household appliance based on the folding frame. Background Art

[0002] As recorded in the patent document with publication number "US10501103B1" and patent name "Articulated Frame": The articulated frame has an open position and a closed position. The frame has eight corner joints, namely four upper corner joints and four lower corner joints. The four upper corner joints include a right front upper joint, a left front upper joint, a right rear upper joint and a left rear upper joint. The four lower corner joints include a right front lower joint, a left front lower joint, a right rear lower joint and a left rear lower joint. The four linear joints include a right middle upper joint, a left middle upper joint, a left middle lower joint and a right middle lower joint. The six vertical brackets include a right front vertical bracket, a left front vertical bracket, a right middle vertical bracket, a left middle vertical bracket, a right rear vertical bracket and a left rear vertical bracket

[0003] In the above-mentioned folding frame solution, multiple vertical brackets are directly connected by multiple hinges, and the multiple vertical brackets are moved closer or farther away from each other by the rotation of the multiple hinges to achieve the folding or unfolding of the frame. However, in the folded state, the multiple hinges are arranged side by side between the multiple vertical brackets, and the vertical brackets cannot be further folded over the hinges, resulting in a larger folding storage area. Summary of the invention

[0004] The present invention aims to provide a folding frame which can reduce the occupied space to the greatest extent after being folded.

[0005] The present application provides a folding frame, comprising:

[0006] a plurality of struts and a folding unit located between the struts;

[0007] The folding unit comprises a first rotating member and a second rotating member rotatably connected;

[0008] One end of the first rotating member away from the second rotating member is rotatably connected to one of the pillars, and one end of the second rotating member away from the first rotating member is rotatably connected to another pillar;

[0009] The folding unit has an unfolded state and a folded state;

[0010] When switching between the unfolded state and the folded state, the first rotating member and the second rotating member rotate relative to each other to drive the pillars to move away from or gather together; wherein;

[0011] In the folded state, two pillars connecting the folding unit are in contact; or,

[0012] A folding gap is provided between two pillars connecting the folding unit, and the folding gap is smaller than the sum of the widths of the first rotating member and the second rotating member.

[0013] Furthermore, in the folded state, the first rotating member and the second rotating member are at least partially received in the support column.

[0014] Further, the first rotating member and the second rotating member are both provided with a hidden area and a leakage area, and the hidden area and the leakage area are arranged along the width direction of the first rotating member or the second rotating member;

[0015] The support column is provided with a storage groove along its height direction, and a third hinged portion is provided in the storage groove. The third hinged portion is hinged to the first rotating member or the second rotating member. In the folded state, the hidden area is transferred into the storage groove.

[0016] Further, in the folded state, the leakage area of ​​the first rotating member abuts against the leakage area of ​​the second rotating member.

[0017] Further, the first rotating member has a first hinged portion at one end away from the second rotating member, and the second rotating member has a second hinged portion at one end away from the first rotating member;

[0018] In the folded state, the first hinge part abuts against the second hinge part, and in the unfolded state, the distance from the first hinge part to the second hinge part is the maximum distance between the two.

[0019] Further, a first gear is disposed at one end of the first rotating member facing the second rotating member, a second gear is disposed at one end of the second rotating member facing the first rotating member, and the first gear is meshed with the second gear;

[0020] The first gear and the second gear are both provided with a first abutting portion and a second abutting portion; when in an unfolded state, the two first abutting portions abut against each other, and when in a folded state, the two second abutting portions abut against each other.

[0021] Compared with the prior art, the beneficial technical effects of the technical solution of the present invention are:

[0022] When the folding structure is in a folded state, the two pillars connecting the folding units touch each other or the gap is smaller than the sum of the widths of the first rotating member and the second rotating member. This design enables the folding structure to minimize the occupied space after folding, facilitating storage and transportation.

[0023] Another folding frame provided by the present application comprises:

[0024] Four pillars and a first folding unit located between any adjacent pillars and rotatably connected to the pillars; and,

[0025] A second folding unit is located between two diagonal pillars and is rotatably connected to the pillars, and the axis extension directions of the second folding units intersect each other;

[0026] The first folding unit and the second folding unit respectively include a plurality of rotating members suitable for relative rotation, and respectively have an unfolded state and a folded state;

[0027] When switching between the unfolded state and the folded state, the rotating member rotates relatively to drive the pillars to move away from each other from the center to the surroundings or to gather from the surroundings to the center; wherein,

[0028] In the folded state, any two adjacent pillars are in contact; or,

[0029] There is a folding gap between any two adjacent pillars, and the folding gap is smaller than the sum of widths of the plurality of rotating members of the first folding unit.

[0030] Furthermore, in the folded state, the rotating members of the first folding unit and the second folding unit are respectively at least partially received in the supporting column.

[0031] Furthermore, each of the pillars is provided with a plurality of receiving grooves along its height direction, and during the conversion of the folding frame from the unfolded state to the folded state, the rotating members of the first folding unit and the second folding unit are respectively adapted to be rotated into the receiving grooves.

[0032] Further, in the folded state, the second folding unit is surrounded between the first folding units.

[0033] Compared with the prior art, the beneficial technical effects of the technical solution of the present invention are:

[0034] On the one hand, the structural design of four pillars combined with the first folding unit and the second folding unit is adopted. In the unfolded state, the stability of the frame is significantly enhanced due to the combined effect of the first folding unit located between adjacent pillars and the second folding unit located between diagonal pillars and with the axis extension directions intersecting each other;

[0035] On the other hand, in the folded state, any two adjacent pillars touch or the gap is smaller than the sum of the widths of the multiple rotating parts of the first folding unit, which ensures that the folding frame can reach a very compact state after folding, effectively saving space. Whether it is used for home storage or for storing and transporting equipment after outdoor activities, this compact folding method is very convenient. For example, after camping in the wild, this folding frame can be quickly folded into a smaller shape, which is convenient for putting back into a backpack or placing in the limited space of a camper.

[0036] The present application further provides a household appliance, which includes the folding frame as described above.

[0037] Further, the household appliance is a folding chair or stool, and the folding chair or stool comprises a seat adapted to be detachably connected to the folding frame, wherein;

[0038] The seats include first type seats and / or second type seats;

[0039] The first type of seat is adapted to be connected to the folding frame in the unfolded state to form a first type of folding chair;

[0040] The second type of seat is adapted to be connected to the folding frame in a folded state to form a second type of folding chair;

[0041] Or, the household appliance is a foldable storage box, and the foldable storage box comprises a frame suitable for being detachably connected to the foldable frame in the unfolded state;

[0042] Alternatively, the household appliance is a folding storage bed, and the folding storage bed includes a bed board suitable for being detachably connected to the folding frame in the unfolded state.

[0043] Furthermore, it also includes: supporting feet, which are respectively connected to the bottom ends of the pillars and extend obliquely outward.

[0044] Compared with the prior art, the beneficial technical effects of the technical solution of the present invention are:

[0045] The household appliance provided in this application has all the beneficial technical effects of the above-mentioned folding structure, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0047] Figure 1 This is a schematic diagram of the structure of the folding frame in the unfolded state in Example 1;

[0048] Figure 2 It is a schematic diagram of the three-dimensional structure of the folding frame in the folded state in Example 1;

[0049] Figure 3 A side view of the structure of the folding frame in the folded state in Example 1;

[0050] Figure 4 This is a schematic diagram of the structure of the folding frame in the unfolded state in Example 2;

[0051] Figure 5 It is a schematic diagram of the three-dimensional structure of the folding frame in the folded state in Example 2;

[0052] Figure 6 is a schematic structural diagram of the first folding unit and the supporting column in the unfolded state in Example 2;

[0053] Figure 7 is a schematic structural diagram of the first folding unit and the second folding unit in embodiment 2 when they are in a folded state;

[0054] Figure 8 is a schematic structural diagram of the folding unit in the unfolded state in Example 2;

[0055] Fig. 9 is a schematic structural diagram of the folding unit in the folded state in Example 2;

[0056] Fig.10 Schematic diagram of the structure of the first gear and the second gear of the folding unit in the unfolded state in the embodiment;

[0057] Fig.11 FIG. 1 is a schematic diagram of the structure of the first gear and the second gear of the folding unit in the folded state in the embodiment. DETAILED DESCRIPTION

[0058] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] Reference Figures 1 to 3 As shown, a folding frame comprises:

[0060] A plurality of pillars 200 and a folding unit 100 located between the pillars 200;

[0061] The folding unit 100 includes a first rotating member 110 and a second rotating member 120 that are rotatably connected;

[0062] One end of the first rotating member 110 away from the second rotating member 120 is rotatably connected to one of the pillars 200, and one end of the second rotating member 120 away from the first rotating member 110 is rotatably connected to the other pillar 200;

[0063] The folding unit 100 has an unfolded state and a folded state;

[0064] When switching between the unfolded state and the folded state, the first rotating member 110 and the second rotating member 120 rotate relative to each other to drive the pillars 200 to move away from or gather together; wherein;

[0065] In the folded state, the two pillars 200 connecting the folding unit 100 are in contact; or,

[0066] There is a folding gap L1 between the two pillars 200 connecting the folding unit 100 , and the folding gap L1 is smaller than the sum L2 of the widths of the first rotating member 110 and the second rotating member 120 .

[0067] The first rotating member 110 and the second rotating member 120 are rotatably connected to different pillars 200 respectively, forming a specific, relatively simple and orderly linkage structure. The folding and unfolding functions are realized by the relative rotation of the two rotating members to drive the pillars to move away from or gather together. In particular, when the folding structure is in the folded state, the two pillars connecting the folding units are in contact or the gap is smaller than the sum of the widths of the two rotating members. This design enables the folding structure to minimize the occupied space after being folded.

[0068] Specifically, continue to refer to Figure 3 As shown, in the folded state, the first rotating member 110 and the second rotating member 120 are at least partially stored in the pillar 200. When the first rotating member 110 and the second rotating member 120 can be at least partially stored in the pillar 200, compared with conventional folding structures in which the rotating members are still completely exposed after folding, the overall dimensions of the entire folding structure after folding will be further reduced.

[0069] In addition, since the rotating parts have a clear storage position, that is, inside the pillar, the components of the frame are more regular after folding, and the rotating parts will not droop randomly, get entangled with other items, or be easily damaged due to messy placement.

[0070] More specifically, continue to refer to Figure 3 As shown, the first rotating member 110 and the second rotating member 120 are both provided with a hidden area and a leakage area, and the hidden area and the leakage area are arranged along the width direction of the first rotating member 110 or the second rotating member 120;

[0071] The support column 200 is provided with a storage groove 220 along its height direction. The storage groove 220 is provided with a third hinge part 150 . The third hinge part 150 is hinged to the first rotating member 110 or the second rotating member 120 . When in the folded state, the hidden area is rotated into the storage groove 220 .

[0072] It can be understood that: by setting up the hidden area and the leakage area, and allowing the hidden area to be turned into the storage groove of the pillar when in the folded state, the storage cooperation between the rotating part and the pillar is achieved. This method of having corresponding storage grooves 220 can make full use of the internal space of the pillar 200, further reduce the excess space occupied by unreasonable storage of components, and make the overall folding frame more compact after folding, and the space saving effect is more significant.

[0073] Moreover, due to the setting of the hinged structure and the corresponding area, the first rotating member and the second rotating member can rotate relative to each other along a reasonable path and angle and complete the storage or extension action when switching between the unfolded state and the folded state, thereby reducing the interference between the components, ensuring that the state conversion process is smoother and more orderly, and further improving the convenience of using the folding frame.

[0074] In addition, in the folded state, the leakage area of ​​the first rotating member 110 abuts against the leakage area of ​​the second rotating member 120. In this way, when the leakage area of ​​the first rotating member 110 abuts against the leakage area of ​​the second rotating member 120, the two rely on and support each other, thereby constructing a relatively stable internal structure in the folded state; moreover, through the abutment of the leakage areas, the relative positions of the two rotating members in the folded state are made tighter and more regular, thereby minimizing the possible gap between the two, further optimizing the overall space occupancy of the folding structure, so that it can present a more compact shape after folding, which is more convenient for storage. Whether it is placed in an indoor storage cabinet or in an outdoor backpack, camping equipment box or other places with limited space, it can use the space more efficiently.

[0075] In addition, after the user has folded the folding frame, the user can intuitively judge whether the folding operation is in place and whether the ideal folding state is reached by observing whether the leakage areas of the first rotating member and the second rotating member are abutted. This clear judgment standard allows the user to promptly discover and correct possible problems such as incomplete folding. At the same time, when the folding frame is subsequently unfolded, it can also be quickly determined whether the starting state is normal based on this state, and the operation can be carried out smoothly, thereby improving the convenience of the entire use process.

[0076] Further, one end of the first rotating member 110 away from the second rotating member 120 has a first hinged portion, and one end of the second rotating member 120 away from the first rotating member 110 has a second hinged portion;

[0077] In the folded state, the first hinge part abuts against the second hinge part, and in the unfolded state, the distance from the first hinge part to the second hinge part is the maximum distance between the two.

[0078] In the folded state, the first hinge part and the second hinge part abut against each other. This design of abutting against each other is equivalent to providing a clear "locking" mechanism for the folding frame. It can effectively prevent the folded frame from being accidentally unfolded due to unexpected force, etc., and ensure that the folded state is firmly maintained, so that during storage and transportation, the folding frame can always maintain a compact shape, avoiding damage caused by collision and friction between components due to loose structure, and improving the reliability of the folding frame when not in use.

[0079] When in the expanded state, the distance from the first hinge part to the second hinge part reaches the maximum, which means that the frame is in a state of maximum expansion and most stable structure. The components are distributed according to the predetermined maximum distance, which can better withstand external forces and provide stable and reliable support for objects built on it, thereby ensuring the load-bearing capacity of the entire frame in actual use scenarios, reducing the possibility of shaking and deformation due to unstable support, and improving the user experience and sense of security when using it.

[0080] Furthermore, a first gear 130 is disposed at one end of the first rotating member 110 facing the second rotating member 120, and a second gear 140 is disposed at one end of the second rotating member 120 facing the first rotating member 110, and the first gear 130 meshes with the second gear 140;

[0081] The first gear 130 and the second gear 140 are both provided with a first abutting portion 131 and a second abutting portion 141 ; when in the unfolded state, the two first abutting portions 131 abut against each other, and when in the folded state, the two second abutting portions 141 abut against each other.

[0082] The first gear on the first rotating member and the second gear on the second rotating member mesh with each other, so that during the folding and unfolding process, the two rotating members can achieve synchronous relative rotation. When the frame is folded, only one of the rotating members needs to be driven to rotate, and the other rotating member will rotate at a corresponding angle and speed through the meshing transmission of the gears, ensuring the coordinated movement of the entire folding unit, avoiding problems such as jamming and structural distortion caused by the asynchronous rotation of the two rotating members, and making the folding and unfolding operations smoother and more efficient.

[0083] In addition, the first abutting portion 131 is disposed on a rotation path of the first gear 130 or the second gear 140 during the unfolding process, and the second abutting portion 141 is disposed on a rotation path of the first gear 130 or the second gear 140 during the folding process.

[0084] Specifically, during the unfolding process, the first gear 130 and the second gear 140 rotate forward until the two first abutting portions 131 abut against each other. At this time, the two first abutting portions 131 can prevent the first gear 130 and the second gear 140 from continuing to rotate in the unfolding direction, thereby positioning the first rotating member 110 and the second rotating member 120 in the unfolded state. At the same time, when the folding unit 100 is subjected to a downward force, the first rotating member 110 and the second rotating member 120 have a tendency to continue to unfold. At this time, the abutment of the two first abutting portions 131 can offset this tendency, thereby enhancing the stability of the first rotating member 110 and the second rotating member 120 in the unfolded state.

[0085] Similarly, during the folding process, the first gear 130 and the second gear 140 rotate in opposite directions until the two second abutment portions 141 abut against each other. At this time, the abutment between the two second abutment portions 141 can prevent the first gear 130 and the second gear 140 from continuing to rotate in the folding direction, thereby positioning the first rotating member 110 and the second rotating member 120 in the folded state.

[0086] Reference Figures 4 to 11 As shown, another folding frame provided by the present application includes:

[0087] Four pillars 200 and a first folding unit 101 located between any adjacent pillars 200 and rotatably connected to the pillars 200; and,

[0088] A second folding unit 102 is located between two diagonal pillars 200 and is rotatably connected to the pillars 200, and the axis extension directions of the second folding unit 102 intersect each other;

[0089] The first folding unit 101 and the second folding unit 102 respectively include a plurality of rotating members suitable for relative rotation, and respectively have an unfolded state and a folded state;

[0090] When switching between the unfolded state and the folded state, the rotating parts rotate relative to each other to drive the pillars 200 to move away from each other from the center to the surroundings or to gather from the surroundings to the center;

[0091] In the folded state, any two adjacent pillars 200 are in contact; or,

[0092] There is a folding gap between any two adjacent pillars 200 , and the folding gap is smaller than the sum of the widths of the plurality of rotating members of the first folding unit 101 .

[0093] The structural design adopts four pillars and combines the first folding unit located between adjacent pillars and the second folding unit located between diagonal pillars and with the axis extension directions intersecting each other. In the unfolded state, this layout significantly enhances the stability of the frame. The first folding unit connects and supports the pillars from all sides, and the second folding unit further strengthens the overall structure through diagonal connections. The various components cooperate with each other and work together to enable the frame to better maintain stability when subjected to external forces and is less prone to shaking, deformation, etc.

[0094] In addition, the rotating parts in the first folding unit and the second folding unit can rotate relative to each other, thereby driving the pillars to move away from each other from the center to the periphery or gather from the periphery to the center, so as to realize flexible conversion between the unfolded state and the folded state. This operation method based on the rotating parts is relatively simple and intuitive. Users can easily complete the folding and unfolding operations without complicated steps or tools. It is convenient to switch the state in different scenarios (such as quickly folding and storing equipment after outdoor camping, and quickly unfolding it when needed at home), which improves the convenience of use.

[0095] In particular, in the folded state, any two adjacent pillars touch each other or the folding gap therebetween is smaller than the sum of the widths of the plurality of rotating members of the first folding unit. Such a design enables the entire folding structure to present a very compact shape after folding.

[0096] Furthermore, in the folded state, the rotating members of the first folding unit 101 and the second folding unit 102 are at least partially received in the support column 200 .

[0097] When the rotating members of the first folding unit and the second folding unit can be at least partially stored in the pillars, the overall dimensions of the entire folding structure will be further reduced compared to folding structures whose rotating members are completely exposed after folding.

[0098] Further, refer to Figure 4 As shown, each support column 200 is provided with a plurality of receiving grooves 220 along its height direction. When the folding structure is transformed from the unfolded state to the folded state, the rotating parts of the first folding unit 101 and the second folding unit 102 are adapted to be rotated into the receiving grooves 220 .

[0099] Among them, each pillar is provided with a plurality of storage grooves along the height direction, so that the rotating parts of the first folding unit and the second folding unit can be respectively rotated into the corresponding storage grooves during the folding process. This design can make full use of the space inside the pillar to avoid the rotating parts being squeezed against each other or having nowhere to be placed when being stored, so that the entire folding frame can be more compactly gathered together after folding, further reducing the space volume occupied by it. In addition, the existence of the storage groove provides a clear guide and limit function for the rotation and storage of the rotating parts during the folding process. When the folding frame is converted from an unfolded state to a folded state, the rotating parts can be naturally and smoothly rotated into them along the position and shape of the storage groove, avoiding the problems of mutual interference and jamming between the rotating parts due to lack of guidance, making the entire folding operation smoother and more convenient.

[0100] In addition, it can also be understood that when the rotating part is rotated into the storage groove, the storage groove can fix and restrain the rotating part, preventing it from leaving the original storage position due to accidental shaking, collision, etc. during storage or transportation, thereby maintaining the stability of the folding frame in the folded state, ensuring that it always maintains a compact shape, reducing the risk of mutual friction and damage caused by component displacement, and helping to extend the service life of the entire folding frame.

[0101] Continue to refer to Figure 7 As shown, in the folded state, the second folding unit 102 is surrounded between the first folding units 101, so that the structure of the entire folding frame in the folded state is more compact, further optimizing the space utilization efficiency.

[0102] In general, the technical solution adopts four pillars 200 and combines the structural design of the first folding unit 101 and the second folding unit 102. In the unfolded state, the stability of the frame is significantly enhanced due to the combined effect of the first folding unit 101 located between adjacent pillars 200 and the second folding unit 102 located between diagonal pillars 200 and with the axis extension directions intersecting each other.

[0103] On the other hand, in the folded state, any two adjacent pillars 200 are in contact or the gap is smaller than the sum of the widths of the multiple rotating parts of the first folding unit 101, which ensures that the folding frame can reach a very compact state after folding, effectively saving space. Whether it is used for home storage or for storage and transportation of equipment after outdoor activities, this compact folding method is very convenient.

[0104] In addition, the present application further provides a household appliance, which includes the folding frame as described above.

[0105] Further, the household appliance is a folding chair or stool, which comprises a seat adapted to be detachably connected to a folding frame, wherein;

[0106] The seats include first type seats and / or second type seats;

[0107] The first type of seat is adapted to be connected to the folding frame in the unfolded state to form a first type of folding chair;

[0108] The second type of seat is suitable for connecting with the folding frame in the folded state to form a second type of folding chair;

[0109] Or, the household appliance is a foldable storage box, and the foldable storage box includes a frame suitable for detachably connecting to the foldable frame in the unfolded state;

[0110] Alternatively, the household appliance is a folding storage bed, which includes a bed board adapted to be detachably connected to the folding frame in an unfolded state.

[0111] Taking a folding chair as an example, a connection port is provided on the lower surface of the seat. In the unfolded state, the first connection portions 210 at the tops of the four pillars 200 extend into the connection ports respectively to realize a first type of folding chair.

[0112] In the folded state, the first connection parts 210 at the tops of the four pillars 200 converge to form a second connection part 211, and the second connection part 211 extends into a connection port of another type of seat, and the seat can be used as a high stool.

[0113] It can be understood that the first type of seat and the second type of seat refer to seats with different interfaces, which may be seats of two different shapes or seats with two different interfaces configured on the same seat.

[0114] Furthermore, it also includes: support legs 300, which are respectively connected to the bottom ends of the pillars 200 and extend obliquely outward, so that the supporting bottom surface can be expanded. In addition, when the obliquely extended support legs are subjected to lateral forces, they can better resist the overturning moment generated by the external force on the frame through the friction between themselves and the ground and the force decomposition effect.

[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A folding frame, comprising: a plurality of struts and a folding unit located between the struts; Features: The folding unit comprises a first rotating member and a second rotating member rotatably connected; One end of the first rotating member away from the second rotating member is rotatably connected to one of the pillars, and one end of the second rotating member away from the first rotating member is rotatably connected to another pillar; The folding unit has an unfolded state and a folded state; When switching between the unfolded state and the folded state, the first rotating member and the second rotating member rotate relative to each other to drive the pillars to move away from or gather together; wherein; In the folded state, two pillars connecting the folding unit are in contact; or, A folding gap is provided between two pillars connecting the folding unit, and the folding gap is smaller than the sum of the widths of the first rotating member and the second rotating member.

2. The folding frame according to claim 1, characterized in that: In the folded state, the first rotating member and the second rotating member are at least partially received in the support column.

3. The folding frame according to claim 1 or 2, characterized in that: The first rotating member and the second rotating member are both provided with a hidden area and a leakage area, and the hidden area and the leakage area are arranged along the width direction of the first rotating member or the second rotating member; The support column is provided with a storage groove along its height direction, and a third hinged portion is provided in the storage groove. The third hinged portion is hinged to the first rotating member or the second rotating member. In the folded state, the hidden area is rotated into the storage groove.

4. The folding frame according to claim 3, characterized in that: In the folded state, the leakage area of ​​the first rotating member abuts against the leakage area of ​​the second rotating member.

5. The folding frame according to claim 3, characterized in that: The first rotating member has a first hinged portion at one end away from the second rotating member, and the second rotating member has a second hinged portion at one end away from the first rotating member; In the folded state, the first hinge part abuts against the second hinge part, and in the unfolded state, the distance from the first hinge part to the second hinge part is the maximum distance between the two.

6. The folding structure according to claim 1 or 2, characterized in that: A first gear is disposed on one end of the first rotating member facing the second rotating member, and a second gear is disposed on one end of the second rotating member facing the first rotating member, and the first gear is meshed with the second gear; The first gear and the second gear are both provided with a first abutting portion and a second abutting portion; when in an unfolded state, the two first abutting portions abut against each other, and when in a folded state, the two second abutting portions abut against each other.

7. A folding frame, comprising: Four pillars and a first folding unit located between any adjacent pillars and rotatably connected to the pillars; as well as, A second folding unit is located between two diagonal pillars and is rotatably connected to the pillars, and the axis extension directions of the second folding units intersect each other; Features: The first folding unit and the second folding unit respectively include a plurality of rotating members suitable for relative rotation, and respectively have an unfolded state and a folded state; When switching between the unfolded state and the folded state, the rotating member rotates relatively to drive the pillars to move away from each other from the center to the surroundings or to gather from the surroundings to the center; wherein, In the folded state, any two adjacent pillars are in contact; or, There is a folding gap between any two adjacent pillars, and the folding gap is smaller than the sum of widths of the plurality of rotating members of the first folding unit.

8. The folding structure according to claim 7, characterized in that: In the folded state, the rotating members of the first folding unit and the second folding unit are respectively at least partially received in the supporting column.

9. The folding structure according to claim 8, characterized in that: Each of the pillars is provided with a plurality of receiving grooves along its height direction. When the folding frame is transformed from the unfolded state to the folded state, the rotating members of the first folding unit and the second folding unit are respectively adapted to be rotated into the receiving grooves.

10. The folding structure according to any one of claims 7 to 9, characterized in that: In the folded state, the second folding unit is surrounded between the first folding units.

11. A household appliance, characterized in that: It comprises a folding frame as described in any one of claims 1 to 10 above.

12. The household appliance according to claim 11, characterized in that: The household appliance is a folding chair or stool, and the folding chair or stool comprises a seat adapted to be detachably connected to the folding frame, wherein; The seats include first type seats and / or second type seats; The first type of seat is adapted to be connected to the folding frame in the unfolded state to form a first type of folding chair; The second type of seat is adapted to be connected to the folding frame in a folded state to form a second type of folding chair; Or, the household appliance is a foldable storage box, and the foldable storage box comprises a frame suitable for being detachably connected to the foldable frame in the unfolded state; Alternatively, the household appliance is a folding storage bed, and the folding storage bed includes a bed board suitable for being detachably connected to the folding frame in the unfolded state.

13. The household appliance according to claim 11 or 12, characterized in that: Also includes: The supporting feet are respectively connected to the bottom ends of the supporting columns and extend obliquely outward.

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