Folding door hinge and folding door mechanism

Abstract

The utility model discloses a folding door hinge and a folding door mechanism, and the folding door hinge comprises a first connecting piece which comprises a first opposite surface and a first assembling surface; the second connecting piece comprises a second opposite surface and a second assembling surface; the opening and closing mechanism is connected between the first connecting piece and the second connecting piece and used for enabling the first opposite face and the second opposite face to be switched between relative attachment and turnover opening; the damping device is arranged on the first opposite face and / or the second opposite face and used for triggering damping when the first opposite face and the second opposite face are oppositely attached. According to the folding door, when the folding door is closed, namely, the first opposite face and the second opposite face are oppositely attached, the damping device can play a role. Instantaneity and accuracy of damping are ensured, and the damping performance when the folding door is closed is remarkably improved; the damping device is integrated on the connecting piece of the hinge, extra track space does not need to be occupied, the overall structure of the door system is simplified, and the folding door is more flexible and not limited by space during installation.

Description

TECHNICAL FIELD

[0001] The utility model relates to hinge technical field especially relates to a folding door hinge and folding door mechanism. BACKGROUND

[0002] In modern architectural design, folding doors are widely used in various indoor and outdoor scenes such as family residences, commercial places, public facilities, etc. due to their space-saving, flexible operation, and elegant characteristics. The traditional folding door hinge design mainly focuses on realizing the opening and closing function of the door leaf, ensuring that the door leaf can smoothly transition from the open state to the closed state and from the closed state to the open state. However, with the improvement of people's quality of life, higher standards are required for the use experience of folding doors, one of which is to have good damping performance when the folding door is closed to reduce noise, protect the door leaf and door frame from impact damage, and improve overall comfort and durability.

[0003] The common folding door damping solution on the market mostly relies on setting damping devices in the track system. Although this design achieves damping effect to some extent, it has several significant shortcomings. First, since folding doors are usually composed of multiple door leaves, each door leaf needs to trigger damping when closing, which requires multiple dampers to be set in the track. This not only greatly increases the space occupation, but also makes the structure of the entire door system complex, increasing the installation and maintenance costs. Second, the dampers in the track are often limited by space size and installation location, making it difficult to achieve uniform and effective damping effect, resulting in significant impact force and noise when the door leaf is closed. SUMMARY

[0004] To overcome at least one of the deficiencies of the prior art described above, the utility model provides a folding door hinge and folding door mechanism. It can solve the problem of large impact force and obvious noise when the folding door is closed.

[0005] The utility model employs the technical scheme that:

[0006] A folding door hinge, comprising: a first connecting piece, the first connecting piece comprising a first opposite face and a first assembly face assembled with a folding door; a second connecting piece, the second connecting piece comprising a second opposite face and a second assembly face assembled with another folding door; an opening and closing mechanism connected between the first connecting piece and the second connecting piece, used to switch the first opposite face and the second opposite face between relative adhesion and flip opening; a damping device provided on the first opposite face and / or the second opposite face, used to trigger damping when the first opposite face and the second opposite face are relatively adhered.

[0007] By adopting the above scheme, when the folding door is closed, i.e. the first opposite surface and the second opposite surface are relatively attached, the damping device can immediately and effectively work. This design ensures the immediacy and accuracy of damping, thereby significantly improving the damping performance when the folding door is closed; the damping device is integrated on the connecting piece of the hinge, without occupying additional track space, which not only simplifies the overall structure of the door system, but also makes the folding door more flexible during installation, without space limitation.

[0008] Further, the first opposite surface and / or the second opposite surface is provided with a damping groove, the damping device is installed in the damping groove, and the side surface of the damping groove is provided with a damping fixing hole, and the damping fixing hole is provided with a damping fixing piece.

[0009] By adopting the above scheme, the damping device is provided with an assembly space, and the damping device is limited in the damping groove through the damping fixing piece passing through the damping fixing hole, so that loosening or damage does not occur during long-term use.

[0010] Further, one side of the first connecting piece is provided with a first accommodation groove penetrating through the first opposite surface and the first assembly surface, one side of the second connecting piece is provided with a second accommodation groove penetrating through the second opposite surface and the second assembly surface, the first accommodation groove and the second accommodation groove are communicated, one end of the opening and closing mechanism is hinged to the first accommodation groove, and the other end is hinged to the second accommodation groove.

[0011] By adopting the above scheme, smooth opening and closing between the door leaves can be realized. This helps to improve the use experience of the folding door, reduce friction and resistance during operation, save space, and improve the aesthetic degree of the door system.

[0012] Further, when the first opposite surface and the second opposite surface are relatively attached, the opening and closing mechanism is completely accommodated in the first accommodation groove and the second accommodation groove.

[0013] By adopting the above scheme, the folding door hinge has multiple advantages such as improved aesthetic degree, enhanced structural stability, reduced space occupation, and convenient cleaning and maintenance.

[0014] Further, the opening and closing mechanism comprises: a first opening and closing piece, one end of the first opening and closing piece is provided with a first hinge rod hinged to the first connecting piece, and the other end is provided with a second hinge rod hinged to the second connecting piece; a second opening and closing piece, one end of the second opening and closing piece is provided with a third hinge rod hinged to the first connecting piece, and the other end is provided with a fourth hinge rod hinged to the second connecting piece; and a rotating shaft, the rotating shaft is sequentially arranged in the middle part of the first opening and closing piece and the middle part of the second opening and closing piece, so that the first opening and closing piece and the second opening and closing piece can rotate around the rotating shaft.

[0015] By adopting the above scheme, stable connection can be formed between the first and second opening and closing pieces, thereby enhancing the stability of the entire opening and closing mechanism. This helps to reduce the risk of loosening or damage caused by long-term use, and is suitable for different types of folding doors, including doors of different sizes, weights and materials.

[0016] Further, the first opening and closing piece is provided with two or more, and the second opening and closing piece is provided with two or more, and the first and second opening and closing pieces are arranged in staggered stacks.

[0017] By adopting the above scheme, the limited space is effectively utilized, so that the hinge can maintain compactness while still providing sufficient strength and stability. This helps to save indoor space and improve space utilization.

[0018] Further, the first assembly surface is provided with a first mounting slot for mounting the first articulated rod, and the first mounting slot is provided with a first elastic member for providing elasticity to the first articulated rod; the second assembly surface is provided with a second mounting slot for mounting the fourth articulated rod, and the second mounting slot is provided with a second elastic member for providing elasticity to the fourth articulated rod.

[0019] By adopting the above scheme, the elastic member can effectively reduce the impact and vibration of the first and fourth articulated rods during movement. This helps to prolong the service life of the hinge while reducing noise; at the same time, the elastic member can provide assistance to the opening and closing of the first and second connecting pieces, i.e. when the first and second connecting pieces are located between opening and closing, the elastic member can provide auxiliary driving force for the folding door to open or close completely, improving the smoothness of the folding door opening and closing.

[0020] Further, the two side edges of the first assembly surface extend outward to form a first assembly position, and the first assembly position is provided with a first assembly hole; the two side edges of the second assembly surface extend outward to form a second assembly position, and the second assembly position is provided with a second assembly hole.

[0021] By adopting the above scheme, key support is provided for the installation, positioning and overall structural stability of the folding door hinge.

[0022] Further, the first assembly position is provided with a first cover plate, and the first cover plate is aligned with the first assembly surface; the second assembly position is provided with a second cover plate, and the second cover plate is aligned with the second assembly surface.

[0023] By adopting the above scheme, the first and second cover plates can also provide additional protection. They can prevent dust, dirt or other debris from entering the first and second assembly positions, while improving the aesthetic appearance.

[0024] A folding door mechanism comprises at least two folding door bodies and a folding door hinge assembled between every two adjacent folding door bodies.

[0025] By adopting the above scheme, the door body is allowed to fold and unfold within a certain range, so that the opening and closing of the space is flexibly controlled, and meanwhile, good damping effect is achieved, the noise during door closing is reduced, and the operation stability is improved.

[0026] In conclusion, the folding door hinge and the folding door mechanism have the following technical effects:

[0027] 1. By integrating the damping device on the connecting piece of the hinge, when the folding door is closed, i.e., the first opposite surface is in close contact with the second opposite surface, the damping device can immediately and effectively play a role. This design ensures the immediacy and accuracy of damping, thereby significantly improving the damping performance of the folding door during closing, and effectively reducing the damage of impact force to the door leaf and the door frame;

[0028] 2. The damping device is integrated on the connecting piece of the hinge, without occupying additional track space. This not only simplifies the overall structure of the door system and reduces the manufacturing cost, but also makes the folding door more flexible during installation and is not limited by space. At the same time, the need for multiple dampers in the track system is reduced, further simplifying the installation and maintenance process;

[0029] 3. The folding door can reduce noise generation during closing, thereby improving the user's experience by reducing the vibration and noise caused by impact force;

[0030] 4. Long-term impact and vibration may cause damage to the door leaf and the door frame. By integrating the damping device, the damage of these impacts to the door system is reduced, thereby prolonging the service life of the folding door. At the same time, stable damping effect also helps to maintain the stability of the door leaf in the closed state. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a hinge structure schematic diagram of the folding door in the stretching and closing state according to the embodiment of the utility model;

[0032] Figure 2 It is a hinge structure schematic diagram of the folding door in the stretching and closing state according to the embodiment of the utility model;

[0033] Figure 3 It is an exploded structure schematic diagram of the hinge according to the embodiment of the utility model;

[0034] Figure 4 It is a hinge structure schematic diagram of the folding door in the shrinking and opening state according to the embodiment of the utility model.

[0035] Wherein, the reference mark meaning as follows: 1, first connecting piece; 11, first opposite surface; 12, first assembly surface; 13, first let place groove; 14, first installation groove; 141, first elastic piece; 15, first assembly position; 151, first assembly hole; 16, first cover plate; 2, second connecting piece; 21, second opposite surface; 22, second assembly surface; 23, second let place groove; 24, second installation groove; 241, second elastic piece; 25, second assembly position; 251, second assembly hole; 26, second cover plate; 3, opening and closing mechanism; 31, first opening and closing piece; 311, first hinged rod; 312, second hinged rod; 32, second opening and closing piece; 321, third hinged rod; 322, fourth hinged rod; 33, pivot; 4, damping device; 41, damping groove; 42, damping fixing hole; 43, damping fixing piece. DETAILED DESCRIPTION

[0036] In order to better understand and implement, the following will be combined with the drawings of the utility model, the technical scheme in the embodiment of the utility model is clearly and completely described and discussed, obviously, only a part of the utility model described here, not all examples, based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts, belong to the protection scope of the utility model.

[0037] In order to facilitate the understanding of the embodiment of the utility model, the following will be combined with the drawings to further explain and illustrate specific embodiments, and each embodiment does not constitute the limitation of the embodiment of the utility model.

[0038] In the description of the utility model, it is necessary to explain that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation of the utility model.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing the specific embodiments, and are not intended to limit the utility model.

[0040] Embodiment 1 of the utility model refers to Figures 1-4As shown, a folding door hinge is disclosed, comprising a first connecting piece 1, a second connecting piece 2, an opening and closing mechanism 3 and a damping device 4, the first connecting piece 1 comprises a first opposite face 11 and a first assembly face 12 assembled with a folding door, the second connecting piece 2 comprises a second opposite face 21 and a second assembly face 22 assembled with another folding door, the opening and closing mechanism 3 is connected between the first connecting piece 1 and the second connecting piece 2, used for switching the first opposite face 11 and the second opposite face 21 between relative adhesion and flip opening, the damping device 4 is arranged on the first opposite face 11 and / or the second opposite face 21, used for triggering damping when the first opposite face 11 and the second opposite face 21 are relatively adhered. Preferably, the damping device 4 is preferably a damping rod, which can immediately and effectively play a role when the folding door is closed, i.e. the first opposite face 11 and the second opposite face 21 are relatively adhered. This design ensures the immediacy and accuracy of damping, thereby significantly improving the damping performance of the folding door when closing; the damping device 4 is integrated on the connecting piece of the hinge, without occupying additional track space, which not only simplifies the overall structure of the door system, but also makes the folding door more flexible during installation, without space limitation.

[0041] In some embodiments, in order to facilitate the installation and fixation of the damping device 4, a damping groove 41 is arranged on the first opposite face 11 and / or the second opposite face 21, the damping device 4 is installed in the damping groove 41, the side surface of the damping groove 41 is provided with a damping fixing hole 42, and a damping fixing piece 43 is arranged in the damping fixing hole 42. Preferably, the damping fixing piece 43 is a screw rod. The damping rod of the damping device 4 is locked in the damping groove 41 by the screw rod, achieving the effect of locking and fixing the damping device 4. The damping device 4 is limited in the damping groove 41 by the damping fixing piece 43 passing through the damping fixing hole 42, which can prevent loosening or damage during long-term use.

[0042] In order to ensure the stable triggering of the damping process, preferably, the damping grooves 41 of the first and second opposite surfaces 11 and 21 are provided with two or more than two and symmetrically distributed, so that the first and second opposite surfaces 11 and 21 can trigger the damping more stably in the process of gradually fitting parallel. In the embodiment 1, one side of the first connecting piece 1 is provided with a first accommodation groove 13 penetrating through the first opposite surface 11 and the first assembly surface 12, one side of the second connecting piece 2 is provided with a second accommodation groove 23 penetrating through the second opposite surface 21 and the second assembly surface 22, the first accommodation groove 13 communicates with the second accommodation groove 23, one end of the opening and closing mechanism 3 is hinged to the first accommodation groove 13, and the other end is hinged to the second accommodation groove 23. The first opposite surface 11 is provided with two damping grooves 41 distributed on both sides of the first accommodation groove 13, the second opposite surface 21 is provided with two damping grooves 41 distributed on both sides of the second accommodation groove 23, the damping grooves 41 on the first opposite surface 11 correspond to the damping grooves 41 on the second opposite surface 21 one by one, and each damping groove 41 is provided with a damping device 4, the damping rod of the damping device 4 slightly protrudes from the damping groove 41, so that the first and second opposite surfaces 11 and 21 can trigger the damping smoothly in the process of gradually fitting parallel. In other embodiments, the number and position of the damping grooves 41 are not limited, and the number of the damping devices 4 is not limited, as long as the above-mentioned effects can be achieved. It is helpful to improve the use experience of the folding door, reduce the friction and resistance in the operation process, save space, and improve the appearance of the door system.

[0043] It should be noted that when the first opposite surface 11 and the second opposite surface 21 are fitted, the opening and closing mechanism 3 is completely accommodated in the first accommodation groove 13 and the second accommodation groove 23. By this arrangement, the folding door hinge can have multiple advantages such as improved appearance, enhanced structural stability, reduced space occupation, and convenient cleaning and maintenance. Preferably, when the opening and closing mechanism 3 is accommodated in the first accommodation groove 13 and the second accommodation groove 23, it can be aligned with the side surfaces of the first and second connecting pieces 1 and 2.

[0044] In some embodiments, the opening and closing mechanism 3 comprises a first opening and closing member 31, a second opening and closing member 32, and a rotating shaft 33. The first opening and closing member 31 is provided with a first hinged rod 311 hinged to the first connecting member 1 at one end and a second hinged rod 312 hinged to the second connecting member 2 at the other end. The second opening and closing member 32 is provided with a third hinged rod 321 hinged to the first connecting member 1 at one end and a fourth hinged rod 322 hinged to the second connecting member 2 at the other end. The rotating shaft 33 is sequentially arranged in the middle of the first opening and closing member 31 and the second opening and closing member 32, allowing the first opening and closing member 31 and the second opening and closing member 32 to rotate around the rotating shaft 33. This allows the first opening and closing member 31 and the second opening and closing member 32 to form a stable connection, thereby enhancing the stability of the entire opening and closing mechanism 3. This helps to reduce the risk of loosening or damage due to long-term use and is suitable for different types of folding doors, including doors of different sizes, weights, and materials. Preferably, the first opening and closing member 31 is provided with two or more, and the second opening and closing member 32 is provided with two or more. The first opening and closing member 31 and the second opening and closing member 32 are arranged in an alternating and stacked manner. Multiple first opening and closing members 31 and second opening and closing members 32 can improve the opening and closing stability and support strength, while effectively utilizing limited space. This allows the hinge to remain compact while still providing sufficient strength and stability. This helps to save indoor space and improve space utilization. In this embodiment 1, the number of first opening and closing members 31 and second opening and closing members 32 is two.

[0045] In order to ensure the complete opening and closing of the folding door, a power assisting structure is usually provided to enable the folding door to be forced during the complete opening and closing process. In this embodiment 1, a first mounting slot 14 for mounting the first hinged rod 311 is provided on the first assembly surface 12, and a first elastic member 141 for providing elastic force to the first hinged rod 311 is arranged in the first mounting slot 14. A second mounting slot 24 for mounting the fourth hinged rod 322 is provided on the second assembly surface 22, and a second elastic member 241 for providing elastic force to the fourth hinged rod 322 is arranged in the second mounting slot 24. Preferably, the first elastic member 141 and the second elastic member 241 are springs. When the first connecting member 1 and the second connecting member 2 are respectively equipped to the edges of two folding doors, the first elastic member 141 is abutted in the first mounting slot 14, and the second elastic member 241 is abutted in the second mounting slot 24. When the folding door is to be opened or closed, the folding door is moved by the user's pushing force or pulling force. At this time, the first hinged rod 311 compresses the first elastic member 141, and the fourth hinged rod 322 compresses the second elastic member 241. Then, the user's pushing force or pulling force gradually decreases. At this time, the first elastic member 141 and the second elastic member 241 release the elastic force to enable the folding to continue to move until the folding door is completely opened or completely closed. The power assisting effect is achieved, that is, when the first connecting member 1 and the second connecting member 2 are located between the opening and closing positions, the elastic members can provide auxiliary driving force for the complete opening or complete closing of the folding door, thereby improving the smoothness of the opening and closing of the folding door. At the same time, the arrangement of the first elastic member 141 and the second elastic member 241 can effectively reduce the impact and vibration of the first hinged rod 311 and the fourth hinged rod 322 during the movement. This helps to prolong the service life of the hinge and reduce the generation of noise.

[0046] In order to be able to stably assemble with the folding door, specifically, in this embodiment 1, the two side edges of the first assembly surface 12 extend outward to form first assembly positions 15, and the first assembly positions 15 are provided with first assembly holes 151. The two side edges of the second assembly surface 22 extend outward to form second assembly positions 25, and the second assembly positions 25 are provided with second assembly holes 251. Preferably, at least one first assembly hole 151 is arranged on each of the two first assembly positions 15, and at least one second assembly hole 251 is arranged on each of the two second assembly positions 25, so as to realize the mounting, positioning and stability of the overall structure of the folding door hinge. In other embodiments, the structures and numbers of the first assembly positions and the second assembly positions 25 are not specifically limited as long as the above-mentioned effects can be achieved.

[0047] In order to improve the appearance, in some embodiments, a first cover plate 16 is arranged on the first assembly site 15, the first cover plate 16 is aligned with the first assembly surface 12, a second cover plate 26 is arranged on the second assembly site 25, the second cover plate 26 is aligned with the second assembly surface 22, and the first cover plate 16 and the second cover plate 26 can also provide additional protection. They can prevent dust, dirt or other debris from entering the first assembly site 15 and the second assembly site 25, while improving the appearance.

[0048] The utility model also relates to a kind of folding door mechanism, including at least two folding door bodies and the folding door hinge assembled between every two adjacent folding door body. Allow door body to be folded and unfolded in a certain range, to flexibly control the opening and closing of space, while having good damping effect, reduce the door noise, improve the operating stability.

[0049] In conclusion, the folding door hinge and folding door mechanism provided by the utility model have the following technical effects:

[0050] 1. By integrating the damping device 4 on the connecting member of the hinge, when the folding door is closed, i.e. the first opposite surface 11 is in close contact with the second opposite surface 21, the damping device 4 can immediately and effectively play a role. This design ensures the immediacy and accuracy of damping, thereby significantly improving the shock absorption performance of the folding door when it is closed, effectively reducing the damage of impact force to the door leaf and the door frame;

[0051] 2. The damping device 4 is integrated on the connecting member of the hinge, without occupying additional track space. This not only simplifies the overall structure of the door system and reduces manufacturing costs, but also makes the folding door more flexible during installation and not limited by space. At the same time, the need for multiple dampers in the track system is reduced, further simplifying the installation and maintenance process;

[0052] 3. The folding door can reduce noise when it is closed, by reducing the vibration and noise caused by impact force, improving the user's experience;

[0053] 4. Long-term impact and vibration can cause damage to the door leaf and the door frame. By integrating the damping device 4, the damage of these impacts to the door system is reduced, thereby prolonging the service life of the folding door. At the same time, stable damping effect also helps to maintain the stability of the door leaf in the closed state.

[0054] The technical means disclosed by the utility model scheme are not limited to the technical means disclosed by the above-mentioned embodiments, and also include technical schemes composed of any combination of the above technical features. It should be noted that, for ordinary skilled persons in the art, without departing from the principles of the utility model, a number of improvements and refinements can be made, and these improvements and refinements are also considered within the protection scope of the utility model.

Claims

1. A folding door hinge, characterized in that, The utility model relates to a kind of folding door connecting device, including: First connecting piece (1), the first connecting piece (1) includes first opposite face (11) and first assembly surface (12) with the assembly of folding door; Second connecting piece (2), the second connecting piece (2) includes second opposite face (21) and second assembly surface (22) with the assembly of another folding door; Opening and closing mechanism (3), the opening and closing mechanism (3) is connected between the first connecting piece (1) and second connecting piece (2), for making first opposite face (11) and second opposite face (21) switch between relative adhesion and flip open; Damping device (4), the damping device (4) is arranged on the first opposite face (11) and / or second opposite face (21), for triggering damping when first opposite face (11) and second opposite face (21) are relatively adhered.

2. A folding door hinge according to claim 1, characterized in that The first opposite face (11) and / or second opposite face (21) are provided with damping groove (41), the damping device (4) is installed in the damping groove (41), the side of the damping groove (41) is provided with damping fixing hole (42), and the damping fixing hole (42) is provided with damping fixing piece (43).

3. The folding door hinge of claim 1, wherein One side of the first connecting piece (1) is provided with first accommodating groove (13) penetrating the first opposite face (11) and first assembly surface (12), one side of the second connecting piece (2) is provided with second accommodating groove (23) penetrating the second opposite face (21) and second assembly surface (22), the first accommodating groove (13) is communicated with the second accommodating groove (23), one end of the opening and closing mechanism (3) is hinged with the first accommodating groove (13), and the other end is hinged with the second accommodating groove (23).

4. A folding door hinge according to claim 3, wherein When the first opposite face (11) and the second opposite face (21) are relatively adhered, the opening and closing mechanism (3) is completely accommodated in the first accommodating groove (13) and the second accommodating groove (23).

5. The folding door hinge of claim 1, wherein The opening and closing mechanism (3) includes: First opening and closing piece (31), one end of the first opening and closing piece (31) is provided with first hinged rod (311) hinged with first connecting piece (1), and the other end is provided with second hinged rod (312) hinged with second connecting piece (2); Second opening and closing piece (32), one end of the second opening and closing piece (32) is provided with third hinged rod (321) hinged with first connecting piece (1), and the other end is provided with fourth hinged rod (322) hinged with second connecting piece (2); Rotating shaft (33), the rotating shaft (33) is sequentially arranged in the middle of the first opening and closing piece (31) and the middle of the second opening and closing piece (32), so that the first opening and closing piece (31) and the second opening and closing piece (32) can rotate around the rotating shaft (33).

6. A folding door hinge according to claim 5, wherein The first opening and closing piece (31) is provided with more than two, the second opening and closing piece (32) is provided with more than two, and the first opening and closing piece (31) and the second opening and closing piece (32) are arranged in turn staggered stack.

7. A folding door hinge according to claim 5, wherein The first assembling surface (12) is provided with a first mounting slot (14) for mounting the first articulated rod (311), and the first mounting slot (14) is provided with a first elastic member (141) for providing elasticity to the first articulated rod (311); the second assembling surface (22) is provided with a second mounting slot (24) for mounting the fourth articulated rod (322), and the second mounting slot (24) is provided with a second elastic member (241) for providing elasticity to the fourth articulated rod (322).

8. The folding door hinge of claim 1, wherein, The two side edges of the first assembling surface (12) extend outward to form a first assembling position (15), and the first assembling position (15) is provided with a first assembling hole (151); the two side edges of the second assembling surface (22) extend outward to form a second assembling position (25), and the second assembling position (25) is provided with a second assembling hole (251).

9. A folding door hinge according to claim 8, wherein The first assembling position (15) is provided with a first cover plate (16), and the first cover plate (16) is aligned with the first assembling surface (12); the second assembling position (25) is provided with a second cover plate (26), and the second cover plate (26) is aligned with the second assembling surface (22).

10. A folding door mechanism, characterized by The folding door hinge comprises at least two folding door bodies and the folding door hinge according to any one of claims 1-9 is assembled between every two adjacent folding door bodies.

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