Folding door hinge

Abstract

The utility model discloses a folding door hinge which comprises a first assembly shell, a second assembly shell and a hinge, a second assembly housing; the opening and closing piece is hinged to the first assembling shell and the second assembling shell; the reset piece is located at the end, far away from the opening and closing piece, of the first assembly shell and provides reset force for the opening and closing piece when the opening and closing piece changes to the opening state; and the buffer piece is located at one end, far away from the closing piece, of the second assembly shell and provides buffer force for the opening and closing piece when the opening and closing piece changes to the opening state. The reset piece and the buffer piece are respectively placed at one end, far away from the closing piece, of the first assembly shell and one end, far away from the closing piece, of the second assembly shell, so that the space is effectively utilized; the buffering piece and the resetting piece can have larger and longer design sizes, so that stronger buffering force and resetting force are provided, and the requirement of a heavy or large-size door leaf is met; due to the fact that stable buffering and resetting support is provided for the opening and closing process of the door leaf, the impact speed of the door leaf can be effectively reduced, noise and vibration are reduced, and a door body, a door frame and peripheral decorations are protected against damage.

Description

Technical Field

[0001] The utility model relates to the technical field related to folding door accessories, in particular to a folding door hinge. Background Art

[0002] In modern home and commercial space design, folding doors are widely popular for their space-saving, flexible opening, and elegant aesthetics. To enhance the user experience and safety of folding doors, the performance and design of the hinge, a key component connecting the door leaves, are particularly important. While existing folding door hinges on the market, such as those described in patent CN221096209U, achieve a certain degree of aesthetic and functionality, with built-in buffers and reset elements to mitigate closing impact and assist in resetting the door leaves, this design still has significant limitations.

[0003] Specifically, the compact size of this type of folding door hinge limits the installation space for the internal buffer and reset components. This space limitation directly affects the design size and performance of these components. Consequently, during use, especially when the folding door is heavy or large, the buffering and reset forces they provide often fail to meet actual requirements. When closing quickly or under external force, the door leaf may experience a violent impact due to the lack of sufficient buffering and reset support. This not only affects the user experience but can also damage the door, door frame, and even surrounding decorations, posing a safety hazard. Utility Model Content

[0004] In order to overcome at least one of the above-mentioned defects of the prior art, the present invention provides a folding door hinge that can solve the problem of insufficient space required for buffering and resetting the folding door by optimizing space utilization, enhancing buffering and resetting effects, and improving overall performance.

[0005] The technical solution adopted by the present invention to solve the problem is:

[0006] A folding door hinge comprises: a first assembly shell, the first assembly shell being used to connect to the end of the upper frame or lower frame of a door leaf; a second assembly shell, the second assembly shell being used to connect to the end of the upper frame or lower frame of another adjacent door leaf; an opening and closing member, the two ends of the opening and closing member being hinged to the first assembly shell and the second assembly shell respectively, for making the first assembly shell and the second assembly shell be in an open state on the same straight line or a closed state in parallel; a reset member, the reset member being located at one end of the first assembly shell away from the closing member, for providing a reset force for the opening and closing member when changing to the open state; and a buffer member, the buffer member being located at one end of the second assembly shell away from the closing member, for providing a buffer force for the opening and closing member when changing to the open state.

[0007] By adopting the above solution, by placing the reset member and the buffer member respectively at one end of the first assembly shell and the second assembly shell away from the assembly member, the space is effectively utilized, so that the buffer member and the reset member can have a larger and longer design size, thereby providing stronger buffering force and reset force to meet the needs of heavy or large-sized door leaves; since stable buffering and reset support are provided for the opening and closing process of the door leaf, the impact speed of the door leaf can be effectively slowed down, noise and vibration can be reduced, and the door body, door frame and surrounding decoration can be protected from damage.

[0008] Furthermore, the opening and closing member includes a first opening and closing member and a second opening and closing member, the middle part of the first opening and closing member is hinged to the middle part of the second opening and closing member; one end of the first opening and closing member is hinged to the second assembly shell, and one end of the second opening and closing member is hinged to the first assembly shell; the other end of the first opening and closing member is connected to a reset member assembly rod, the reset member assembly rod partially passes through the first assembly shell, the reset member is sleeved on the reset member assembly rod, and one end abuts against the end part of the reset member assembly rod, and the other end abuts against the first assembly shell; the other end of the second opening and closing member is connected to a buffer member trigger rod, the buffer member trigger rod partially passes through the second assembly shell, and the buffer member trigger rod is used to trigger the buffer member.

[0009] By adopting the above solution, by distributing the opening and closing functions to two components, not only the stability of the structure is improved, but also the opening and closing action is made smoother and more controllable. The middle parts of the two opening and closing parts are hinged, allowing them to rotate relative to each other, thereby realizing the opening and closing between the door leaves; at the same time, it is ensured that the opening and closing parts can rotate freely around the assembly shell and maintain the connection with the door leaf. Under the action of the reset part assembly rod, the door leaf can be tightly closed. Under the action of the buffer part trigger rod, the door leaf is ensured not to open too fast, so as to slow down the impact speed of the door leaf and protect the door body, door frame and surrounding decoration from damage.

[0010] Furthermore, the first assembly shell is provided with a first sliding groove, and when the opening and closing member is switched between the open state and the closed state, the other end of the first opening and closing member slides along the first sliding groove; the second assembly shell is provided with a second sliding groove, and when the opening and closing member is switched between the open state and the closed state, the other end of the second opening and closing member slides along the second sliding groove.

[0011] By adopting the above solution, the first sliding groove and the second sliding groove provide a clear path and positioning for the sliding of the opening and closing member, ensuring the accuracy and stability of the opening and closing member when switching between the open state and the closed state, and avoiding unnecessary deviation or shaking.

[0012] Furthermore, a first connecting member is provided between the first opening and closing member and the reset member assembly rod, and a second connecting member is provided between the second opening and closing member and the buffer member trigger rod.

[0013] By adopting the above solution, a stable connection is ensured between the opening and closing part and the reset part assembly rod or the buffer part trigger rod, which can withstand the tension and pressure generated during the opening and closing process, prevent the parts from loosening or falling off, and is also responsible for effectively transmitting the movement force of the opening and closing part, thereby triggering the reset part or the buffer part to work.

[0014] Furthermore, the first connecting member and the second connecting member both include: a cylindrical slot end, the cylindrical slot end is provided with a cylindrical slot, and the cylindrical slot is fixedly connected to the reset member assembly rod or the buffer member trigger rod; a hinged end, the hinged end and the cylindrical slot end are integrally formed, the hinged end is provided with a hinge hole, and the hinged hole is hinged to the first opening and closing member or the second opening and closing member.

[0015] By adopting the above solution, the column groove and the reset member assembly rod or the buffer member trigger rod can be connected by threads, snaps, welding or other fastening mechanisms to ensure the firmness and stability of the connection; the hinge hole allows the first opening and closing member or the second opening and closing member to be hinged to it, thereby realizing flexible conversion of the opening and closing member between the open state and the closed state.

[0016] Furthermore, the first assembly shell and the second assembly shell both include: an assembly plate, which is used to be fixed to the upper frame or the lower frame of the door leaf; a first plate body, which is arranged on the side of the assembly plate away from the door leaf; a second plate body, which is arranged on the side of the assembly plate away from the door leaf; a support frame, which is clamped between the first plate body and the second plate body; and fasteners, which are used to stack and fix the assembly plate, the first plate body support frame and the second plate body.

[0017] By adopting the above solution, the assembly plate provides a connection point and a support surface to ensure that the entire hinge system can be firmly installed on the door leaf. The assembly plate can be connected to the door leaf frame by screws, bolts, welding or other fastening mechanisms; the first plate body and the second plate body provide additional support and reinforcement. The support frame forms the internal skeleton of the assembly shell, which can disperse the force and torque from the door leaf and the opening and closing parts, and protect other components from damage.

[0018] Furthermore, an accommodating cavity is formed between the first plate body, the second plate body and the supporting frame, the opening and closing member is partially connected to the accommodating cavity, and the supporting frame is provided with a notch for avoiding the opening and closing member.

[0019] By adopting the above solution, the accommodating cavity provides the necessary space for the installation and operation of the opening and closing parts, and the gap ensures that the opening and closing parts will not be hindered by the support frame during movement, thereby ensuring the smooth operation of the opening and closing parts while maintaining the rigidity and stability of the support frame.

[0020] Furthermore, a portion of the support frame facing the notch is provided with a perforation.

[0021] By adopting the above solution, it is beneficial to provide avoidance space for the reset member assembly rod or the buffer member trigger rod, and at the same time it can limit the movement direction of the reset member assembly rod or the buffer member trigger rod, thereby improving movement stability.

[0022] Furthermore, two of each of the first opening and closing members and the second opening and closing members are provided, and the two first opening and closing members and the two second opening and closing members are staggered, stacked, and hinged.

[0023] By adopting the above solution, the stability and strength of the structure can be increased while reducing the overall occupied space.

[0024] Furthermore, a first rotating shaft is provided between one ends of the two first opening and closing members, and a second rotating shaft is provided between the other ends of the two first opening and closing members; a third rotating shaft is provided between one ends of the two second opening and closing members, and a fourth rotating shaft is provided between the other ends of the two second opening and closing members.

[0025] By adopting the above solution, when the door leaf needs to be opened or closed, the two first opening and closing members will rotate around the first rotating shaft, and the two second opening and closing members will rotate around the third rotating shaft; the second rotating shaft and the fourth rotating shaft are used to be hinged with the hinge hole.

[0026] In summary, the folding door hinge provided by the present invention has the following technical effects:

[0027] 1. By placing the reset member and the buffer member at one end of the first and second assembly housings, respectively, away from the assembly, there is no need to limit the size of the reset member and the buffer member. This allows for more installation space for the buffer member and the reset member in a compact hinge structure, allowing them to be designed longer and larger, thereby improving their performance.

[0028] 2. Because the buffer and reset components can be designed with larger dimensions, they can provide stronger buffering and reset forces. This is particularly important for heavy or large door leaves, which require greater force to smoothly transition between opening and closing. The enhanced buffering effect can significantly reduce the speed at which the door leaf hits the door frame, reducing noise and vibration, while the enhanced reset effect ensures that the door leaf can return to the open state stably.

[0029] 3. The optimized buffer and reset function makes the folding door more stable and quiet during use, providing users with a more comfortable experience. Whether under manual operation or automatic control, the door leaves can open and close smoothly, avoiding the abrupt feeling caused by impact;

[0030] 4. The effective buffering and reset mechanism reduces the impact of the door leaf on the door frame and surrounding decorations, reduces the risk of damage caused by frequent impacts, and extends the service life of the folding door. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic structural diagram of the hinge closed state of an embodiment of the present utility model;

[0032] Figure 2 This is a schematic structural diagram of the hinge in an open state according to an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the exploded structure of the hinge closed state of an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the exploded structure of the hinge in the open state of an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of a hinge assembled on a door leaf according to an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the exploded connection structure of the opening and closing parts of an embodiment of the utility model;

[0037] Figure 7 This is a schematic diagram of the exploded structure of the first connecting piece in an embodiment of the present utility model.

[0038] 1. The first assembly shell; 11. The assembly plate; 12. The first plate body; 121. The shaft hole; 13. The second plate body; 14. The support frame; 141. The notch; 142. The through hole; 15. The fastener; 16. The first slide groove; 2. The second assembly shell; 21. The second slide groove; 3. The opening and closing member; 31. The first opening and closing member; 311. The first rotating shaft; 312. The second rotating shaft; 32. The second opening and closing member; 321. The third rotating shaft; 322. The fourth rotating shaft; 33. The cooperating member; 34. The reset member assembly rod; 341. The baffle; 35. The buffer member trigger rod; 4. The reset member; 5. The buffer member; 6. The door leaf; 7. The first connecting member; 71. The cylindrical groove end; 711. The cylindrical groove; 72. The hinge end; 721. The hinge hole; 8. The second connecting member. DETAILED DESCRIPTION

[0039] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all the examples. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] In order to facilitate the understanding of the embodiments of the present invention, the following will be further explained with reference to specific embodiments as examples in conjunction with the drawings, and each embodiment does not constitute a limitation on the embodiments of the present invention.

[0041] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0043] Example 1 of the present utility model is shown in FIG. Figure 1-Figure 7 As shown, a folding door hinge is disclosed, comprising a first assembly shell 1, a second assembly shell 2, an opening and closing member 3, a reset member 4 and a buffer member 5. The first assembly shell 1 is used to connect to the end of the upper frame or lower frame of a door leaf 6, and the second assembly shell 2 is used to connect to the end of the upper frame or lower frame of another adjacent door leaf 6. The two ends of the opening and closing member 3 are respectively hinged to the first assembly shell 1 and the second assembly shell 2, so as to make the first assembly shell 1 and the second assembly shell 2 in an open state or a parallel closed state on the same straight line. The open state corresponds to the closing of the door leaf 6, and the closed state corresponds to the folding of the door leaf 6. The reset member 4 is located at the end of the first assembly shell 1 away from the closing member 3, and is used to The opening and closing member 3 provides a reset force when changing to the open state. The buffer member 5 is located at one end of the second assembly shell 2 away from the closing member 3, and is used to provide a buffer force for the opening and closing member 3 when changing to the open state. By placing the reset member 4 and the buffer member 5 respectively on the end of the first assembly shell 1 and the second assembly shell 2 away from the closing member 3, the space is effectively utilized, so that the buffer member 5 and the reset member 4 can have a larger and longer design size, thereby providing stronger buffering force and reset force to meet the needs of heavy or large-sized door leaves 6; since stable buffering and reset support are provided for the opening and closing process of the door leaf 6, the impact speed of the door leaf 6 can be effectively slowed down, noise and vibration can be reduced, and the door body, door frame and surrounding decoration can be protected from damage.

[0044] In a specific embodiment, the first assembly shell 1 and the second assembly shell 2 both include an assembly plate 11, a first plate 12, a second plate 13, a support frame 14 and fasteners 15, and the first assembly shell 1 and the second assembly shell 2 are mirror-symmetrical. The assembly plate 11 is used to be fixed to the upper frame or lower frame of the door leaf 6, and the fixing method includes but is not limited to screw locking, bonding or clamping. In this embodiment 1, the assembly plate 11 and the door leaf 6 are fixed by inclined screws. The first plate 12 and the second plate 13 are arranged on the side of the assembly plate 11 away from the door leaf 6, and the first plate 12 and the second plate 13 are arranged in parallel. The support frame 14 is clamped between the first plate 12 and the second plate 13. The fasteners 15 are used to stack and fix the assembly plate 11, the first plate 12, the support frame 14 and the second plate 13. Optionally, the fasteners 15 include but are not limited to screws or bolts. There are preferably more than two fasteners 15. In this embodiment 1, four fasteners 15 are provided. With this arrangement, the assembly plate 11 provides a connection point and a support surface to ensure that the entire hinge system can be firmly installed on the door leaf 6. The assembly plate 11 can be connected to the door leaf 6 frame by screws, bolts, welding or other fastening mechanisms; the first plate body 12 and the second plate body 13 provide additional support and reinforcement, and the support frame 14 forms the internal skeleton of the assembly shell, which can disperse the force and torque from the door leaf 6 and the opening and closing member 3, and protect other components from damage.

[0045] Preferably, the first assembly shell 1 is provided with a first slide groove 16, and when the opening and closing member 3 is switched between the open state and the closed state, the other end of the first opening and closing member 31 slides along the first slide groove 16; the second assembly shell 2 is provided with a second slide groove 21, and when the opening and closing member 3 is switched between the open state and the closed state, the other end of the second opening and closing member 32 slides along the second slide groove 21. The first slide groove 16 and the second slide groove 21 provide a clear path and positioning for the sliding of the opening and closing member 3, ensuring the accuracy and stability of the opening and closing member 3 when switching between the open state and the closed state, and avoiding unnecessary deviation or shaking.

[0046] In a specific embodiment, the opening and closing member 3 includes a first opening and closing member 31 and a second opening and closing member 32, the middle part of the first opening and closing member 31 is hinged to the middle part of the second opening and closing member 32, and a columnar cooperating member 33 is provided at the hinge; one end of the first opening and closing member 31 is hinged to the second assembly shell 2, and one end of the second opening and closing member 32 is hinged to the first assembly shell 1; the other end of the first opening and closing member 31 is connected to a reset member assembly rod 34, and the reset member assembly rod 34 partially passes through the first assembly shell 1, and the reset member 4 is sleeved on the reset member assembly rod 34, and one end abuts against the end of the reset member assembly rod 34, and the other end abuts against the first assembly shell 1; in this embodiment 1, the reset member 4 is a spring, and the end of the reset member assembly rod 34 away from the first assembly shell 1 is provided with a baffle 341 for abutting the spring, and the buffer member 5 is a damping device, and the damping device is fixed by screws after being snap-connected to the second assembly shell 2. The other end of the second opening and closing member 32 is connected to a buffer member trigger rod 35, and the buffer member trigger rod 35 partially passes through the second assembly shell 2. The buffer member trigger rod 35 is used to trigger the buffer member 5. By distributing the opening and closing functions to two components, not only the stability of the structure is improved, but also the opening and closing action is made smoother and more controllable. The middle parts of the two opening and closing members 3 are hinged, allowing them to rotate relative to each other, thereby realizing the opening and closing between the door leaves 6; at the same time, it ensures that the opening and closing member 3 can rotate freely around the assembly shell and maintain connection with the door leaf 6. Under the action of the reset member assembly rod 34, it ensures that the door leaf 6 can be tightly closed. Under the action of the buffer member trigger rod 35, it ensures that the door leaf 6 does not open too fast, so as to slow down the impact speed of the door leaf 6 and protect the door body, door frame and surrounding decoration from damage.

[0047] In this embodiment 1, two of each of the first opening and closing members 31 and the second opening and closing members 32 are provided. The two first opening and closing members 31 and the two second opening and closing members 32 are staggered, stacked, and hinged, which increases the stability and strength of the structure while reducing the overall space occupied. A first rotating shaft 311 is provided between one end of the two first opening and closing members 31, and a second rotating shaft 312 is provided between the other ends of the two first opening and closing members 31; a third rotating shaft 321 is provided between one end of the two second opening and closing members 32, and a fourth rotating shaft 322 is provided between the other ends of the two second opening and closing members 32. Axial holes 121 are provided on the first plate 12 and the second plate 13 corresponding to the first rotating shaft 311 and the third rotating shaft 321, allowing the two first opening and closing members 31 to rotate about the first rotating shaft 311, and the two second opening and closing members 32 to rotate about the third rotating shaft 321. The first slide groove 16 is simultaneously provided on the first plate body 12 and the second plate body 13 in the first assembly shell 1, so that when the first opening and closing member 31 rotates, the second rotating shaft 312 can slide along the first slide groove 16; the second slide groove 21 is simultaneously provided on the first plate body 12 and the second plate body 13 in the second assembly shell 2, so that when the second opening and closing member 32 rotates, the fourth rotating shaft 322 can slide along the second slide groove 21.

[0048] In order to improve the linkage effect between the opening and closing member 3 and the reset member 4 and the buffer member 5, a first connecting member 7 is provided between the first opening and closing member 31 and the reset member assembly rod 34, and a second connecting member 8 is provided between the second opening and closing member 32 and the buffer member trigger rod 35. This can ensure a firm connection between the opening and closing member 3 and the reset member assembly rod 34 or the buffer member trigger rod 35, can withstand the tension and pressure generated during the opening and closing process, prevent loosening or falling off between the components, and is also responsible for effectively transmitting the movement force of the opening and closing member 3, thereby triggering the reset member 4 or the buffer member 5 to work. In this embodiment 1, the first connecting member 7 and the second connecting member 8 both include a cylindrical groove end 71 and a hinged end 72, the cylindrical groove end 71 is provided with a cylindrical groove 711, the cylindrical groove 711 is fixedly connected to the reset member assembly rod 34 or the buffer member trigger rod 35, the hinged end 72 and the cylindrical groove end 71 are integrally formed, the hinged end 72 is provided with a hinge hole 721, the hinged hole 721 is hinged to the first opening and closing member 31 or the second opening and closing member 32. It should be noted that the cylindrical groove 711 and the reset member assembly rod 34 or the buffer member trigger rod 35 can be achieved through threads, snaps, welding or other fastening mechanisms to ensure the firmness and stability of the connection; the hinged hole 721 allows the first opening and closing member 31 or the second opening and closing member 32 to be hinged thereto, thereby realizing the flexible conversion of the opening and closing member 3 between the open state and the closed state.

[0049] In this embodiment 1, a receiving cavity is formed between the first plate 12, the second plate 13, and the support frame 14. The opening and closing member 3 is partially connected to the receiving cavity. The support frame 14 is provided with a notch 141 for circumventing the opening and closing member 3. The notches 141 of the two support frames 14 are arranged to face each other when the door leaf 6 is closed. The receiving cavity provides the necessary space for the installation and operation of the opening and closing member 3. The notch 141 ensures that the opening and closing member 3 is not obstructed by the support frame 14 during movement, thereby maintaining the rigidity and stability of the support frame 14 while ensuring the smooth operation of the opening and closing member 3. The portion of the support frame 14 facing the notch 141 is provided with a perforation 142, which facilitates providing circumventing space for the reset member assembly rod 34 or the buffer member trigger rod 35, and can also limit the movement direction of the reset member assembly rod 34 or the buffer member trigger rod 35, thereby improving movement stability.

[0050] The specific implementation of the embodiment 1 of the present utility model in actual application is shown in FIG. Figure 5 As shown, the door leaf 6 is provided with two leaves, and the top and bottom ends of the two door leaves 6 are equipped with a folding door hinge to ensure the stability of the door leaf 6 during the closing or opening process. The buffer member 5 and the buffer member 5 are always parallel to the door leaf 6, providing an auxiliary reset effect during the closing process without occupying additional space, and providing a buffer deceleration effect during the door opening process. Specifically, during the door opening process, the first opening and closing member 31 rotates along the first rotating shaft 311, and the second opening and closing member 32 rotates along the second rotating shaft 312. The two are relatively rotated and opened by the cooperative member 33, so that the first assembly shell 1 and the second assembly shell 2 change from a straight line to a U shape. At this time, the second rotating shaft 312 and the fourth rotating shaft 322 slide along the first sliding groove 16 and the second sliding groove 21 respectively until they reach one end near the opening and closing member 3 and stop. At this time, the elastic member is compressed and stored by the baffle 341 of the reset member assembly rod 34, and the buffer member trigger rod 35 is separated from the abutment effect of the buffer member 5. During the door closing process, the elastic member releases its elastic force to provide power for closing the door. The second rotating shaft 312 and the fourth rotating shaft 322 slide along the first sliding groove 16 and the second sliding groove 21 respectively until they reach one end away from the clutch 3 and stop. At this time, the elastic member is in a reset state, and the buffer trigger rod 35 begins to abut against the buffer 5 and obtains the deceleration force for closing the door, achieving a deceleration and anti-collision effect.

[0051] In summary, the folding door hinge provided by the present invention has the following technical effects:

[0052] 1. By placing the reset member 4 and the buffer member 5 at the ends of the first assembly housing 1 and the second assembly housing 2, respectively, away from the assembly member 3, there is no need to limit the size of the reset member 4 and the buffer member 5. This allows the buffer member 5 and the reset member 4 to occupy more installation space in the compact hinge structure, allowing them to be designed longer and larger, thereby improving their performance.

[0053] 2. Because the buffer 5 and reset element 4 can be designed with larger dimensions, they can provide stronger buffering and reset forces. This is particularly important for heavy or large door leaves 6, which require greater force for a smooth transition during opening and closing. The enhanced buffering effect can significantly reduce the speed at which the door leaf 6 hits the door frame, reducing noise and vibration, while the enhanced reset effect ensures that the door leaf 6 can stably return to the open state.

[0054] 3. The optimized buffer and reset function makes the folding door more stable and quiet during use, providing users with a more comfortable experience. Whether under manual operation or automatic control, the door leaf 6 can open and close smoothly, avoiding the abrupt feeling caused by impact;

[0055] 4. The effective buffering and reset mechanism reduces the impact of door leaf 6 on the door frame and surrounding decorations, reduces the risk of damage caused by frequent impacts, and extends the service life of the folding door.

[0056] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A folding door hinge, characterized in that: include: A first assembly shell (1), the first assembly shell (1) being used to be connected to the end of an upper frame or a lower frame of a door leaf (6); A second assembly shell (2), the second assembly shell (2) being used to be connected to the end of the upper frame or the lower frame of another adjacent door leaf (6); an opening and closing member (3), the two ends of which are hinged to the first assembly shell (1) and the second assembly shell (2), respectively, for placing the first assembly shell (1) and the second assembly shell (2) in an open state on the same straight line or in a parallel closed state; A reset member (4), the reset member (4) being located at one end of the first assembly housing (1) away from the closing member (3), and being used to provide a force for the opening and closing member (3) to reset when the opening and closing member (3) changes to an open state; A buffer member (5) is located at one end of the second assembly housing (2) away from the closing member (3) and is used to provide a buffering force for the closing member (3) when it changes to an open state.

2. A folding door hinge according to claim 1, characterized in that: The opening and closing member (3) comprises a first opening and closing member (31) and a second opening and closing member (32), wherein the middle portion of the first opening and closing member (31) is hinged to the middle portion of the second opening and closing member (32); One end of the first opening and closing member (31) is hinged to the second assembly shell (2), and one end of the second opening and closing member (32) is hinged to the first assembly shell (1); The other end of the first opening and closing member (31) is connected to a reset member assembly rod (34), and the reset member assembly rod (34) partially passes through the first assembly shell (1). The reset member (4) is sleeved on the reset member assembly rod (34), and one end abuts against the end of the reset member assembly rod (34), and the other end abuts against the first assembly shell (1); The other end of the second opening and closing member (32) is connected to a buffer member trigger rod (35), and the buffer member trigger rod (35) partially passes through the second assembly shell (2). The buffer member trigger rod (35) is used to trigger the buffer member (5).

3. A folding door hinge according to claim 2, characterized in that: The first assembly housing (1) is provided with a first sliding groove (16), and when the opening and closing member (3) is switched between the open state and the closed state, the other end of the first opening and closing member (31) slides along the first sliding groove (16); The second assembly housing (2) is provided with a second sliding groove (21), and when the opening and closing member (3) is switched between the open state and the closed state, the other end of the second opening and closing member (32) slides along the second sliding groove (21).

4. A folding door hinge according to claim 2, characterized in that: A first connecting member (7) is provided between the first opening and closing member (31) and the reset member assembly rod (34), and a second connecting member (8) is provided between the second opening and closing member (32) and the buffer member trigger rod (35).

5. A folding door hinge according to claim 4, characterized in that: The first connecting member (7) and the second connecting member (8) both comprise: A columnar slot end (71), wherein the columnar slot end (71) is provided with a columnar slot (711), and the columnar slot (711) is fixedly connected to the reset member assembly rod (34) or the buffer member trigger rod (35); A hinged end (72), wherein the hinged end (72) and the cylindrical slot end (71) are integrally formed, and the hinged end (72) is provided with a hinged hole (721), and the hinged hole (721) is hinged to the first opening and closing member (31) or the second opening and closing member (32).

6. The folding door hinge according to claim 1, characterized in that: The first assembly shell (1) and the second assembly shell (2) both comprise: An assembly plate (11), the assembly plate (11) being used for fixing to an upper frame or a lower frame of a door leaf (6); a first plate (12), the first plate (12) being arranged on a side of the assembly plate (11) away from the door leaf (6); a second plate body (13), the second plate body (13) being arranged on a side of the assembly plate (11) away from the door leaf (6); A support frame (14), the support frame (14) being sandwiched between the first plate (12) and the second plate (13); A fastener (15) is used to stack and fix the assembly plate (11), the first plate body (12), the support frame (14) and the second plate body (13).

7. A folding door hinge according to claim 6, characterized in that: An accommodating cavity is formed between the first plate body (12), the second plate body (13) and the supporting frame (14); the opening and closing member (3) is partially connected to the accommodating cavity; and the supporting frame (14) is provided with a notch (141) for avoiding the opening and closing member (3).

8. A folding door hinge according to claim 7, characterized in that: A portion of the support frame (14) facing the notch (141) is provided with a perforation (142).

9. The folding door hinge according to claim 2, characterized in that: Two of each of the first opening and closing pieces (31) and the second opening and closing pieces (32) are provided, and the two first opening and closing pieces (31) and the two second opening and closing pieces (32) are staggered, stacked, and hinged.

10. The folding door hinge according to claim 9, characterized in that: A first rotating shaft (311) is provided between one ends of the two first opening and closing members (31), and a second rotating shaft (312) is provided between the other ends of the two first opening and closing members (31); a third rotating shaft (321) is provided between one ends of the two second opening and closing members (32), and a fourth rotating shaft (322) is provided between the other ends of the two second opening and closing members (32).

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