Hinge, foldable door structure and cabinet using the door structure

Abstract

The present invention discloses a hinge, comprising a fixed seat, a left rotating seat, and a right rotating seat. The fixed seat is provided with a receiving groove, and the fixed seat is provided with a first hinge column and a second hinge column, the first hinge column and the second hinge column are both located in the receiving groove, and the first hinge column and the second hinge column are parallel to each other. The first side of the left rotating seat is pivotally connected to the first hinge column. The first side of the right rotating seat is pivotally connected to the second hinge column. The hinge also includes a linkage assembly, and the linkage assembly includes a first rotating rod, a second rotating rod, and a third rotating rod. The first end of the first rotating rod is pivotally connected to the fixed seat, and the second end of the first rotating rod is pivotally connected to the second rotating rod. The first end of the second rotating rod is pivotally connected to the left rotating seat, the first end of the third rotating rod is pivotally connected to the right rotating seat, and the second end of the second rotating rod is pivotally connected to the second end of the third rotating rod. The door structure can be fully unfolded and can be stored, so that the door structure occupies a small space. The present invention also discloses a door structure and a cabinet.

Description

Technical Field

[0001] The invention relates to the technical field of supporting mechanisms, in particular to a hinge, a foldable door structure and a cabinet using the door structure. Background Art

[0002] Doors can be used as anti-theft doors, window doors, cabinet doors, etc. Due to the influence of the hinge structure and the connection between the hinge and the door structure, the opening angle of existing double-opening doors (i.e. doors that can be opened on both sides) is generally less than 180°. As a result, the existing door structure generally has the following defects:

[0003] 1. Affected by the hinge structure, the existing double-doors generally cannot be fully opened, that is, the opening angle is less than 180°; therefore, when the double-doors are applied to cabinet doors, the entire cabinet body cannot be exposed, resulting in insufficient space for users to conveniently organize items in the cabinet.

[0004] 2. Affected by the hinge structure, the existing door structure also needs to occupy a large space after being unfolded, which not only limits the application scenario of the door structure (or cabinet), but also is not conducive to user operation. As a result, users are often interfered with by the cabinet door when organizing items in the cabinet, affecting efficiency.

[0005] Therefore, existing hinge is in urgent need of improvement. Summary of the invention

[0006] In order to overcome the deficiencies of the prior art, one of the objects of the present invention is to provide a hinge which enables a door structure to be fully unfolded; and also enables the door structure to be stowed, even if the door structure occupies a small space.

[0007] A second object of the present invention is to provide a foldable door structure.

[0008] A third object of the present invention is to provide a cabinet.

[0009] One of the purposes of the present invention is achieved by the following technical solution:

[0010] Hinge, including a fixed seat, a left rotating seat, and a right rotating seat;

[0011] The fixing seat is provided with a receiving groove, and the fixing seat is provided with a first hinge column and a second hinge column, the first hinge column and the second hinge column are both located in the receiving groove, and the first hinge column and the second hinge column are parallel to each other and spaced a certain distance apart;

[0012] The first side of the left rotating seat is pivotally connected to the first hinge column, the second side of the left rotating seat is arranged opposite to the first side of the left rotating seat, and the second side of the left rotating seat is located outside the accommodating groove;

[0013] The first side of the right rotating seat is pivotally connected to the second hinge column, the second side of the right rotating seat is arranged opposite to the first side of the right rotating seat, and the second side of the right rotating seat is located outside the accommodating groove;

[0014] The second side of the left rotating seat and the second side of the right rotating seat can move closer to each other or move away from each other;

[0015] The hinge further comprises a linkage assembly, and the linkage assembly comprises a first rotating rod, a second rotating rod, and a third rotating rod;

[0016] The first end of the first rotating rod is pivotally connected to the fixed seat, and the second end of the first rotating rod is pivotally connected to the second rotating rod; the first end of the second rotating rod is pivotally connected to the left rotating seat, the first end of the third rotating rod is pivotally connected to the right rotating seat, and the second end of the second rotating rod is pivotally connected to the second end of the third rotating rod.

[0017] Furthermore, the hinge also includes a first torsion spring and a second torsion spring, the first torsion spring is sleeved on the first hinge column, and the two ends of the first torsion spring are respectively fixed to the fixed seat and the left rotating seat; the second torsion spring is sleeved on the second hinge column, and the two ends of the second torsion spring are respectively fixed to the fixed seat and the right rotating seat.

[0018] Furthermore, the fixing seat is provided with a first hinge hole and a second hinge hole, and the first hinge hole and the second hinge hole are movably connected to the first hinge column and the second hinge column respectively.

[0019] Furthermore, the fixing seat protrudes into the groove of the accommodating groove on the bottom wall of the accommodating groove to form a rib plate, and the first hinge hole and the second hinge hole are both arranged on the rib plate.

[0020] Further, the linkage assembly is located in the accommodating groove, and the first rotating rod is pivotally connected to the first side wall of the accommodating groove; two linkage assemblies are provided, and the two linkage assemblies are respectively located on two opposite sides of the left rotating seat; and the first hinge hole and the second hinge hole are both located between the two linkage assemblies.

[0021] Furthermore, one of the left rotating seat and the second side wall of the accommodating groove is provided with a first make way groove, and the first make way groove is used to accommodate the left rotating seat or the second side wall of the accommodating groove; one of the right rotating seat and the third side wall of the accommodating groove is provided with a second make way groove, and the second make way groove is used to accommodate the right rotating seat or the third side wall of the accommodating groove.

[0022] The second object of the present invention is achieved by adopting the following technical solution:

[0023] A foldable door structure comprises the hinge.

[0024] Furthermore, the foldable door structure also includes a first door panel, a second door panel, and a third door panel; the second door panel is located between the first door panel and the third door panel; the fixed seat is fixedly connected to the second door panel, and the second side of the left rotating seat and the second side of the right rotating seat are respectively fixedly connected to the first door panel and the third door panel; when the second side of the left rotating seat and the second side of the right rotating seat are close to each other, the first door panel and the third door panel are both rotated relative to the second door panel and close to each other; when the second side of the left rotating seat and the second side of the right rotating seat are away from each other, the first door panel and the third door panel are both rotated relative to the second door panel and away from each other, and the first door panel, the second door panel, and the third door panel are made coplanar.

[0025] Furthermore, the width of the first door panel is greater than the width of the second door panel and is equal to the width of the third door panel.

[0026] The third object of the present invention is achieved by adopting the following technical solution:

[0027] A cabinet comprises the foldable door structure.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The hinge of the present invention is connected to the first hinge column by the first side of the left rotating seat, and the first side of the right rotating seat is connected to the second hinge column by the first side of the right rotating seat, so that the second side of the left rotating seat can rotate in an arc around the first side of the left rotating seat, and the second side of the right rotating seat can rotate in an arc around the first side of the right rotating seat; thereby realizing that the second side of the left rotating seat and the second side of the right rotating seat can move closer to each other or move away from each other. When the left rotating seat, the fixed seat, and the right rotating seat are fixedly connected to the three door panels respectively, the door panels fixed to the left rotating seat and the door panels fixed to the right rotating seat can move closer to each other or move away from each other; furthermore, when the door panels fixed to the left rotating seat and the door panels fixed to the right rotating seat are close to each other, the three door panels moving closer to each other is equivalent to occupying the space of only one door panel, so that the entire door structure occupies less space, has less interference with the user's range of activities, and is more convenient to use. Moreover, when the door structure is used for a cabinet door, the cabinet door is equivalent to being in a fully open state, which is very convenient for the user to organize the items in the cabinet; and the window door and cabinet door installed with the hinge are also suitable for use in more narrow spaces.

[0030] 2. By pivoting the first end of the first rotating rod to connect to the fixed seat, the first end of the first rotating rod serves as a supporting element and a travel limit element for supporting the left rotating seat and the right rotating seat, thereby limiting the range of motion of the left rotating seat and the right rotating seat. The second end of the first rotating rod rotates in an arc around the first end of the rotating rod, and cooperates with the first side of the left rotating seat to pivotally connect to the first hinge column, and the first side of the right rotating seat to pivotally connect to the second hinge column; so as to ensure that the left rotating seat and the right rotating seat can repeatedly move closer to or farther from each other.

[0031] 3. Since the second end of the first rotating rod is pivotally connected to the second rotating rod, the first end of the second rotating rod is pivotally connected to the left rotating seat, the first end of the third rotating rod is pivotally connected to the right rotating seat, and the second end of the second rotating rod is pivotally connected to the second end of the third rotating rod. Therefore, the left rotating seat and the right rotating seat are in a synchronous motion state, that is, as long as the left rotating seat is pulled, the right rotating seat naturally performs a mirror motion under the linkage effect, which is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the hinge of the present invention;

[0033] Figure 2 It is a structural schematic diagram of a foldable door structure of the present invention (the first door panel and the third door panel are in a state of being away from each other);

[0034] Figure 3 for Figure 2 A schematic structural diagram of a foldable door structure (a first door panel and a third door panel switch between a state of being close to each other and a state of being far away from each other) is shown;

[0035] Figure 4 for Figure 2 The structure diagram of the foldable door structure (the first door panel and the third door panel are in a state of being close to each other) is shown.

[0036] In the figure: 1, fixed seat; 11, accommodating groove; 111, first side wall of accommodating groove; 112, second side wall of accommodating groove; 1121, first make way groove; 113, third side wall of accommodating groove; 1131, second make way groove; 12, first hinge column; 13, second hinge column; 14, rib plate; 2, left rotating seat; 3, right rotating seat; 41, first rotating rod; 42, second rotating rod; 43, third rotating rod; 51, first torsion spring; 52, second torsion spring; 61, first door panel; 62, second door panel; 63, third door panel. DETAILED DESCRIPTION

[0037] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0038] Figure 1 The hinge of the present invention comprises a fixed seat 1, a left rotating seat 2 and a right rotating seat 3.

[0039] The fixing seat 1 is provided with a receiving groove 11, and the fixing seat 1 is provided with a first hinge column 12 and a second hinge column 13. The first hinge column 12 and the second hinge column 13 are both located in the receiving groove 11, and the first hinge column 12 and the second hinge column 13 are parallel to each other and spaced a certain distance apart. It can be understood that the first side of the left rotating seat 2 is located in the receiving groove 11, and the first side of the right rotating seat 3 is located in the receiving groove 11, which can make the hinge structure more compact and reduce the space occupied by the hinge as a whole. In addition, the receiving groove 11 can also protect the connection between the first side of the left rotating seat 2 and the first hinge column 12; similarly, the receiving groove 11 can also protect the connection between the first side of the right rotating seat 3 and the second hinge column 13.

[0040] The first side of the left rotating seat 2 is pivotally connected to the first hinge column 12, and the second side of the left rotating seat 2 is arranged opposite to the first side of the left rotating seat 2, and the second side of the left rotating seat 2 is located outside the receiving groove 11. It can be understood that by arranging the second side of the left rotating seat 2 outside the receiving groove 11, it is ensured that the second side of the left rotating seat 2 is normally connected to the door structure.

[0041] The first side of the right rotating seat 3 is pivotally connected to the second hinge column 13, and the second side of the right rotating seat 3 is arranged opposite to the first side of the right rotating seat 3, and the second side of the right rotating seat 3 is located outside the receiving groove 11. It can be understood that by arranging the second side of the right rotating seat 3 outside the receiving groove 11, it is ensured that the second side of the right rotating seat 3 is normally connected to the door structure.

[0042] Since the second side of the left rotating seat 2 can rotate in an arc around the first side of the left rotating seat 2 (or the first hinge column 12), the second side of the right rotating seat 3 can rotate in an arc around the first side of the right rotating seat 3 (or the second hinge column 13). Therefore, the second side of the left rotating seat 2 and the second side of the right rotating seat 3 can move closer to each other or away from each other.

[0043] The hinge further comprises a linkage assembly, which comprises a first rotating rod 41 , a second rotating rod 42 , and a third rotating rod 43 .

[0044] The first end of the first rotating rod 41 is pivotally connected to the fixed seat 1, and the second end of the first rotating rod 41 is pivotally connected to the second rotating rod 42. The first end of the second rotating rod 42 is pivotally connected to the left rotating seat 2, the first end of the third rotating rod 43 is pivotally connected to the right rotating seat 3, and the second end of the second rotating rod 42 is pivotally connected to the second end of the third rotating rod 43. Among them, the pivot position of the first rotating rod 41 and the second rotating rod 42 can be located at any position of the second rotating rod 42, and in this embodiment, the pivot position of the first rotating rod 41 and the second rotating rod 42 is located between the first end of the second rotating rod 42 and the second end of the second rotating rod 42, and the distance between the first rotating rod 41 and the first end of the second rotating rod 42 is smaller than the distance between the first rotating rod 41 and the second end of the second rotating rod 42. Such a setting is conducive to a better linkage effect among the first rotating rod 41, the second rotating rod 42, and the third rotating rod 43.

[0045] It should be noted here that the pivot connection method in this embodiment can be connected through a pin shaft; it can also be connected through a bolt and a nut (that is, not completely locked); it can also be that one of the components itself forms a cylinder and is movably connected to the hole of the other component; since the pivot connection methods are too numerous to enumerate, they will not be described in detail in this embodiment.

[0046] In order to understand the specific use of this hinge, please refer to Figure 2-Figure 4 , the left rotating seat 2, the fixed seat 1, the right rotating seat 3 and the three door panels are fixedly connected respectively. When the second side of the left rotating seat 2 and the second side of the right rotating seat 3 can move closer to each other or farther away from each other, the door panels fixed to the left rotating seat 2 and the door panels fixed to the right rotating seat 3 can move closer to each other or farther away from each other. It can be understood that when the two door panels are close to each other, they are in a folded state. When applied to a cabinet, the cabinet door is in a fully open state, which is very convenient for the user to organize the items in the cabinet. Moreover, at this time, the three door panels close to each other are equivalent to occupying the space of only one door panel, which reduces the interference with the user's range of activities and is more convenient to use.

[0047] Obviously, in summary, the hinge of the present invention is connected to the first hinge column 12 by the first side of the left rotating seat 2, and the first side of the right rotating seat 3 is connected to the second hinge column 13, so that the second side of the left rotating seat 2 can make a circular rotation around the first side of the left rotating seat 2, and the second side of the right rotating seat 3 can make a circular rotation around the first side of the right rotating seat 3; thereby realizing that the second side of the left rotating seat 2 and the second side of the right rotating seat 3 can be close to each other or away from each other. When the left rotating seat 2, the fixed seat 1, and the right rotating seat 3 are fixedly connected to the three door panels respectively, the door panels fixed to the left rotating seat 2 and the door panels fixed to the right rotating seat 3 can be close to each other or away from each other; furthermore, when the door panels fixed to the left rotating seat 2 and the door panels fixed to the right rotating seat 3 are close to each other, the three door panels are close to each other, which is equivalent to occupying the space of only one door panel, so that the entire door structure occupies a small space, has little interference with the user's range of activities, and is more convenient to use. Moreover, when the door structure is used for a cabinet door, the cabinet door is equivalent to being in a fully open state, which is very convenient for the user to organize the items in the cabinet; and the window door and cabinet door installed with the hinge are also suitable for use in more narrow spaces.

[0048] Furthermore, by pivoting the first end of the first rotating rod 41 to the fixed seat 1, the first end of the first rotating rod 41 serves as a supporting element and a travel limit element for supporting the left rotating seat 2 and the right rotating seat 3, thereby limiting the range of motion of the left rotating seat 2 and the right rotating seat 3. The second end of the first rotating rod 41 performs an arc rotation around the first end of the rotating rod, and cooperates with the first side of the left rotating seat 2 to pivotally connect to the first hinge column 12, and the first side of the right rotating seat 3 to pivotally connect to the second hinge column 13; so as to ensure that the left rotating seat 2 and the right rotating seat 3 can repeatedly move closer to or farther from each other.

[0049] Furthermore, since the second end of the first rotating rod 41 is pivotally connected to the second rotating rod 42, the first end of the second rotating rod 42 is pivotally connected to the left rotating seat 2, the first end of the third rotating rod 43 is pivotally connected to the right rotating seat 3, and the second end of the second rotating rod 42 is pivotally connected to the second end of the third rotating rod 43. Therefore, the left rotating seat 2 and the right rotating seat 3 are in a synchronous motion state, that is, as long as the left rotating seat 2 is pulled, the right rotating seat 3 naturally performs a mirror motion under the linkage effect, which is very convenient to use.

[0050] In this embodiment, in order to further optimize the solution.

[0051] Preferably, the hinge further comprises a first torsion spring 51 and a second torsion spring 52, wherein the first torsion spring 51 is sleeved on the first hinge column 12, and the two ends of the first torsion spring 51 are respectively fixed to the fixed seat 1 and the left rotating seat 2. The second torsion spring 52 is sleeved on the second hinge column 13, and the two ends of the second torsion spring 52 are respectively fixed to the fixed seat 1 and the right rotating seat 3. It can be understood that the impact force is buffered by the first torsion spring 51 and the second torsion spring 52, so that the second side of the left rotating seat 2 and the second side of the right rotating seat 3 can be elastically buffered when they are close to each other, thereby preventing the left rotating seat 2 and the right rotating seat 3 from causing a strong rigid impact on the fixed seat 1, especially after being installed on the door structure, it can prevent the impact between the door panels. Moreover, the first torsion spring 51 and the second torsion spring 52 can also provide elastic force to make it easier for the second side of the left rotating seat 2 and the second side of the right rotating seat 3 to be separated, so that when the hinge is applied to the door structure, it is easier to pull the door panel and close the door panel.

[0052] Preferably, the fixing seat 1 is provided with a first hinge hole (not shown in the figure) and a second hinge hole (not shown in the figure), and the first hinge hole and the second hinge hole are respectively movably connected to the first hinge column 12 and the second hinge column 13; such a setting can make the first hinge column 12 and the second hinge column 13 rotate, thereby avoiding the first torsion spring 51 and the first hinge column 12 from getting stuck, or the second torsion spring 52 and the second hinge column 13 from getting stuck, which may cause the first torsion spring 51 or the second torsion spring 52 to be damaged. In addition, the first hinge column 12 and the second hinge column 13 can rotate after long-term use, and will not be excessively worn due to local long-term bearing of the main load. It should be noted here that, in addition to this setting, the first hinge column 12 and the second hinge column 13 can be fixed on the fixing seat 1, for example, by welding, bonding, riveting, bolting, etc.

[0053] Preferably, the fixing seat 1 is formed with a rib plate 14 protruding from the bottom wall of the receiving groove 11 into the groove of the receiving groove 11, and the first hinge hole and the second hinge hole are both provided on the rib plate 14. It can be understood that there are two first hinge holes and two second hinge holes. The two ends of the first hinge column 12 are respectively inserted into the two first hinge holes, and the two ends of the second hinge column 13 are respectively inserted into the two second hinge holes. This arrangement avoids using the side wall of the receiving groove 11 to support the first hinge column 12 and the second hinge column 13, so that the receiving groove 11 has more space left to accommodate other components, so that the space occupied by the hinge is smaller; it also allows more components of the hinge to be accommodated in the receiving groove 11, so as to be protected by the side wall of the receiving groove 11 to avoid scratches and damage.

[0054] Preferably, the linkage assembly is located in the receiving groove 11, and the first rotating rod 41 is pivotally connected to the first side wall 111 of the receiving groove, so that the connection between the first rotating rod 41 and the fixed seat 1 is located in a hidden position, and the connection between the fixed seat 1 and the first rotating member has greater strength. Furthermore, two linkage assemblies are provided, and the two linkage assemblies are respectively located on the opposite sides of the left rotating seat 2. And the first hinge hole and the second hinge hole are both located between the two linkage assemblies. Such a configuration is conducive to strengthening the supporting strength of the fixed seat 1 to the left rotating seat 2 and the right rotating seat 3, and also makes the structure of the hinge more compact, making the space utilization of the receiving groove 11 more reasonable.

[0055] In order to make the left rotating seat 2 and the right rotating seat 3 fully unfolded (that is, when the left rotating seat 2 and the right rotating seat 3 are away from each other), the left rotating seat 2, the fixed seat 1, and the right rotating seat 3 all have an end surface located in the same plane to ensure that when the hinge is applied to the cabinet door, the door panels can be flush when closed. Preferably, one of the left rotating seat 2 and the second side wall 112 of the receiving groove is provided with a first clearance groove 1121, and the first clearance groove 1121 is used to accommodate the left rotating seat 2 or the second side wall 112 of the receiving groove; that is, when the first clearance groove 1121 is provided on the left rotating seat 2, the first clearance groove 1121 is used to accommodate the second side wall 112 of the receiving groove; when the first clearance groove 1121 is provided on the second side wall 112 of the receiving groove, the first clearance groove 1121 is used to accommodate the left rotating seat 2. One of the right rotating seat 3 and the third side wall 113 of the receiving groove is provided with a second clearance groove 1131, and the second clearance groove 1131 is used to accommodate the right rotating seat 3 or the third side wall 113 of the receiving groove. Obviously, the second side wall 112 of the receiving groove is arranged opposite to the third side wall 113 of the receiving groove. It should be further explained here that it can be understood that in addition to this setting method, the first clearance groove 1121 may not be set, and it is only necessary to bend the structure of the left rotating seat 2 and the right rotating seat 3 at a certain angle to prevent them from interfering with the second side wall 112 of the receiving groove and the third side wall 113 of the receiving groove. At this time, the left rotating seat 2, the fixed seat 1, and the right rotating seat 3 do not have an end face that is located in the same plane.

[0056] See also Figure 2-Figure 4 The present invention also discloses a foldable door structure, including hinges.

[0057] Preferably, the foldable door structure further includes a first door panel 61, a second door panel 62, and a third door panel 63. The second door panel 62 is located between the first door panel 61 and the third door panel 63. The fixed seat 1 is fixedly connected to the second door panel 62, and the second side of the left rotating seat 2 and the second side of the right rotating seat 3 are respectively fixedly connected to the first door panel 61 and the third door panel 63. When the second side of the left rotating seat 2 and the second side of the right rotating seat 3 are close to each other, the first door panel 61 and the third door panel 63 are both rotated relative to the second door panel 62 and close to each other (that is, the first door panel 61 and the third door panel 63 are close to each other). When the second side of the left rotating seat 2 and the second side of the right rotating seat 3 are away from each other, the first door panel 61 and the third door panel 63 are both rotated relative to the second door panel 62 and away from each other (that is, the first door panel 61 and the third door panel 63 are away from each other), and the first door panel 61, the second door panel 62, and the third door panel 63 are coplanar. It can be understood that at this time, the second door panel 62 is provided with a groove, a blind hole or a through hole for embedding the fixing seat 1; or, as long as the thickness of the first door panel 61 is equal to that of the third door panel 63, and its thickness is greater than that of the second door panel 62, the thickness of the fixing seat 1 is offset to ensure that the first door panel 61, the second door panel 62, and the third door panel 63 are coplanar. In addition, a handle (not shown in the figure) is connected to the outer side of the second door panel 62. More preferably, the width of the first door panel 61 is greater than the width of the second door panel 62, and is equal to the width of the third door panel 63. The advantage of such a setting is that, for example, it is conducive to the first door panel 61, the second door panel 62, and the third door panel 63 to cover the doorway of the cabinet of the same area, and occupy the smallest space when the cabinet door is open.

[0058] The cabinet of the present invention includes a foldable door structure. One side of the third door panel 63 is connected to the cabinet.

[0059] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. Hinge, characterized in that: It includes a fixed seat, a left rotating seat and a right rotating seat; The fixing seat is provided with a receiving groove, and the fixing seat is provided with a first hinge column and a second hinge column, the first hinge column and the second hinge column are both located in the receiving groove, and the first hinge column and the second hinge column are parallel to each other and spaced a certain distance apart; The first side of the left rotating seat is pivotally connected to the first hinge column, the second side of the left rotating seat is arranged opposite to the first side of the left rotating seat, and the second side of the left rotating seat is located outside the accommodating groove; The first side of the right rotating seat is pivotally connected to the second hinge column, the second side of the right rotating seat is arranged opposite to the first side of the right rotating seat, and the second side of the right rotating seat is located outside the accommodating groove; The second side of the left rotating seat and the second side of the right rotating seat can move closer to each other or move away from each other; The hinge further comprises a linkage assembly, and the linkage assembly comprises a first rotating rod, a second rotating rod, and a third rotating rod; The first end of the first rotating rod is pivotally connected to the fixed seat, and the second end of the first rotating rod is pivotally connected to the second rotating rod; the first end of the second rotating rod is pivotally connected to the left rotating seat, the first end of the third rotating rod is pivotally connected to the right rotating seat, and the second end of the second rotating rod is pivotally connected to the second end of the third rotating rod; The hinge further comprises a first torsion spring and a second torsion spring, wherein the first torsion spring is sleeved on the first hinge column, and the two ends of the first torsion spring are respectively fixed to the fixed seat and the left rotating seat; the second torsion spring is sleeved on the second hinge column, and the two ends of the second torsion spring are respectively fixed to the fixed seat and the right rotating seat; One of the left rotating seat and the second side wall of the accommodating groove is provided with a first makeshift groove, and the first makeshift groove is used to accommodate the left rotating seat or the second side wall of the accommodating groove; one of the right rotating seat and the third side wall of the accommodating groove is provided with a second makeshift groove, and the second makeshift groove is used to accommodate the right rotating seat or the third side wall of the accommodating groove.

2. The hinge according to claim 1, characterized in that: The fixing seat is provided with a first hinge hole and a second hinge hole, and the first hinge hole and the second hinge hole are movably sleeved on the first hinge column and the second hinge column respectively.

3. The hinge according to claim 2, characterized in that: The fixing seat protrudes into the groove of the accommodating groove on the bottom wall of the accommodating groove to form a rib plate, and the first hinge hole and the second hinge hole are both arranged on the rib plate.

4. The hinge according to claim 3, characterized in that: The linkage assembly is located in the accommodating groove, and the first rotating rod is pivotally connected to the first side wall of the accommodating groove; two linkage assemblies are provided, and the two linkage assemblies are respectively located on two opposite sides of the left rotating seat; and the first hinge hole and the second hinge hole are both located between the two linkage assemblies.

5. A foldable door structure, characterized in that: The invention comprises the hinge according to any one of claims 1 to 4.

6. The foldable door structure according to claim 5, characterized in that: The foldable door structure also includes a first door panel, a second door panel, and a third door panel; the second door panel is located between the first door panel and the third door panel; the fixed seat is fixedly connected to the second door panel, and the second side of the left rotating seat and the second side of the right rotating seat are respectively fixedly connected to the first door panel and the third door panel; when the second side of the left rotating seat and the second side of the right rotating seat are close to each other, the first door panel and the third door panel are both rotated relative to the second door panel and approach each other; when the second side of the left rotating seat and the second side of the right rotating seat are away from each other, the first door panel and the third door panel are both rotated relative to the second door panel and away from each other, and the first door panel, the second door panel, and the third door panel are made coplanar.

7. The foldable door structure according to claim 6, characterized in that: The width of the first door panel is greater than that of the second door panel and is equal to that of the third door panel.

8. Cabinet, characterized by: The invention comprises the foldable door structure according to any one of claims 5 to 7.

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