Hinge mechanism and folding door and window comprising same

Abstract

The invention discloses a hinge mechanism and a folding door and window comprising the same. The hinge mechanism comprises a box body; the first connecting seat is fixedly provided with a first rotating shaft, and the first rotating shaft is rotationally connected to the box body; the second connecting seat is fixedly provided with a second rotating shaft, and the second rotating shaft is rotationally connected to the box body; the first gear is fixedly arranged on the first rotating shaft, and the first gear and the first rotating shaft rotate synchronously; the second gear is fixedly arranged on the second rotating shaft, and the second gear and the second rotating shaft rotate synchronously; the transmission gear set is rotationally connected to the box body and connected between the first gear and the second gear in a meshed mode, under transmission of the transmission gear set, the first gear and the second gear synchronously and reversely rotate, and under driving of the first gear and the second gear, the first connecting base and the second connecting base can synchronously and reversely rotate to the unfolding position or the folding position. Therefore, the problem of poor rotation synchronism of the two connecting seats in a traditional hinge mechanism is effectively solved, and the stability and coordination of the folding door in the unfolding and folding process are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of door and window hardware accessories, in particular to a hinge mechanism and a folding door and window comprising the hinge mechanism. Background Art

[0002] A folding door usually includes multiple door leaves. In order to realize the unfolding and folding between two adjacent door leaves, a hinge mechanism needs to be set between the two adjacent door leaves. The hinge mechanism includes a box body and two connecting seats. The two connecting seats are rotatably connected to the box body. The two connecting seats are respectively connected to the two adjacent door leaves. The two connecting seats can rotate between an unfolded position and a folded position. When the hinge mechanism is in the unfolded position, the two adjacent door leaves can be opened on the same straight line. When the hinge mechanism is in the folded position, the two adjacent door leaves are folded parallel to each other. However, the overall structure of the existing hinge mechanism is usually more complicated, and the rotation synchronization of the two connecting seats is poor. Summary of the invention

[0003] In order to overcome at least one of the defects of the prior art described above, the present invention provides a hinge mechanism and a folding door and window comprising the same. The hinge mechanism can rotate synchronously in opposite directions and has a stable structure and is easy to operate.

[0004] The technical solution adopted by the present invention to solve the problem is:

[0005] A hinge mechanism, used for folding doors and windows, comprises: a box body; a first connecting seat, fixedly provided with a first rotating shaft, the first rotating shaft is rotatably connected to the box body; a second connecting seat, fixedly provided with a second rotating shaft, the second rotating shaft is rotatably connected to the box body; a first gear, fixedly provided on the first rotating shaft, the first gear and the first rotating shaft rotate synchronously; a second gear, fixedly provided on the second rotating shaft, the second gear and the second rotating shaft rotate synchronously; a transmission gear set, rotatably connected to the box body and meshingly connected between the first gear and the second gear, under the transmission of the transmission gear set, the first gear and the second gear rotate synchronously in opposite directions, and driven by the first gear and the second gear, the first connecting seat and the second connecting seat can rotate synchronously in opposite directions to the unfolded position or the folded position.

[0006] According to some embodiments of the present invention, the transmission gear set includes two transmission gears, and the first gear, the two transmission gears, and the second gear are meshed and connected in sequence.

[0007] According to some embodiments of the present invention, a projection of a line connecting the first rotating shaft, the rotating shafts of all gears in the transmission gear set, and the second rotating shaft on a horizontal plane is in an arc shape.

[0008] According to some embodiments of the present invention, the first gear, the second gear and each gear in the transmission gear set have the same number of teeth and module.

[0009] According to some embodiments of the present invention, the hinge mechanism also includes a cover body, which is disposed on the box body, and an assembly cavity is formed between the cover body and the box body, and the first gear, the second gear and the transmission gear set are all located in the assembly cavity.

[0010] According to some embodiments of the present invention, the first connecting seat is provided with a first elastic clip, the second connecting seat is provided with a second elastic clip, and the box body is provided with a first limiting groove and a second limiting groove. When the first connecting seat and the second connecting seat are rotated to the expanded position, the first elastic clip is engaged with the first limiting groove and the second elastic clip is engaged with the second limiting groove to keep the first connecting seat and the second connecting seat in the expanded position.

[0011] According to some embodiments of the present invention, the hinge mechanism also includes a first torsion spring and a second torsion spring, the first torsion spring is arranged between the first connecting seat and the box body, and the second torsion spring is arranged between the second connecting seat and the box body, and when the first connecting seat and the second connecting seat are rotated to the folded position, the first torsion spring and the second torsion spring are compressed.

[0012] According to some embodiments of the present invention, the first connecting seat is provided with a first protrusion, the second connecting seat is provided with a second protrusion, and the box body is provided with a third protrusion and a fourth protrusion; one elastic arm of the first torsion spring is abutted against the first protrusion, and the other elastic arm is abutted against the third protrusion; one elastic arm of the second torsion spring is abutted against the second protrusion, and the other elastic arm is abutted against the fourth protrusion.

[0013] According to some embodiments of the present invention, the first rotating shaft is integrally formed with the first connecting seat, and / or the second rotating shaft is integrally formed with the second connecting seat.

[0014] In addition, the present invention also provides a folding door and window, including the hinge mechanism as described above, and also including a first door and window sash and a second door and window sash, the first door and window sash is fixedly connected to the first connecting seat, and the second door and window sash is fixedly connected to the second connecting seat; when the first connecting seat and the second connecting seat are rotated to the unfolded position, the first door and window sash and the second door and window sash are synchronously rotated in opposite directions to the unfolded state; when the first connecting seat and the second connecting seat are rotated to the folded position, the first door and window sash and the second door and window sash are synchronously rotated in opposite directions to the folded state.

[0015] In summary, the hinge mechanism and the folding door and window including the hinge mechanism provided by the present invention have at least the following technical effects:

[0016] On the one hand, thanks to the precise meshing transmission between the first gear, the second gear and the transmission gear set, the first connecting seat and the second connecting seat can realize synchronous reverse rotation between the unfolded position and the folded position, which effectively solves the problem of poor rotation synchronization of the two connecting seats in the traditional hinge mechanism, so that the first door and window sash and the second door and window sash corresponding to the first connecting seat and the second connecting seat can rotate synchronously in the opposite direction, ensuring the stability and coordination of the folding door during the unfolding and folding process. In addition, since the hinge mechanism can ensure the synchronous rotation of the two connecting seats, the user can experience a smoother and smoother opening and closing experience when operating the folding door, which not only improves the convenience of use, but also enhances the user's overall satisfaction with the product. On the other hand, by introducing the first gear, the second gear and the transmission gear set, the first connecting seat and the second connecting seat can realize synchronous reverse rotation between the unfolded position and the folded position, which effectively solves the problem of poor rotation synchronization of the two connecting seats in the traditional hinge mechanism, so that the first door and window sash and the second door and window sash corresponding to the first connecting seat and the second connecting seat can rotate synchronously in the opposite direction, ensuring the stability and coordination of the folding door during the unfolding and folding process. In addition, since the hinge mechanism can ensure the synchronous rotation of the two connecting seats, the user can experience a smoother and smoother opening and closing experience when operating the folding door, which not only improves the convenience of use, but also enhances the user's overall satisfaction with the product. The combined design of the two gears and the transmission gear set realizes the simplification and optimization of the internal structure of the hinge mechanism. This design not only reduces the overall complexity, but also improves the stability and durability of the mechanism, and reduces the risk of failure caused by complex structure; on the other hand, due to the meshing transmission between the first gear, the second gear and the transmission gear set, the first connecting seat and the second connecting seat can be allowed to rotate inward or outward to the folded position, that is to say, whether the first gear rotates clockwise and the second gear rotates counterclockwise, or the first gear rotates counterclockwise and the second gear rotates clockwise, the first connecting seat and the second connecting seat can be allowed to rotate to the folded position. In this way, the user can push open the folding door and window either inside or outside the door, which is more labor-saving and convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a folding door and window in an unfolded state according to an embodiment of the present invention;

[0018] Figure 2 It is a structural schematic diagram of a folding door and window in a folded state according to an embodiment of the present invention;

[0019] Figure 3 It is a structural schematic diagram of a hinge mechanism in an embodiment of the present invention in an unfolded position;

[0020] Figure 4 It is a structural schematic diagram of the hinge mechanism (open cover body) of an embodiment of the present invention in an unfolded position;

[0021] Figure 5 It is a structural schematic diagram of a hinge mechanism in a folded position according to an embodiment of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the hinge mechanism (open cover body) of an embodiment of the present invention in a folded position;

[0023] Figure 7 It is a schematic diagram of the exploded structure of the hinge mechanism of an embodiment of the present invention;

[0024] Figure 8 Schematic diagram of the structure of the box body of the embodiment of the present invention.

[0025] The meanings of the reference numerals are as follows:

[0026] 1. Box body; 11. First connecting hole; 12. Second connecting hole; 13. Third protrusion; 14. Fourth protrusion; 15. First limiting groove; 16. Second limiting groove; 2. First connecting seat; 21. First rotating shaft; 211. First shaft section; 212. Second shaft section; 213. Third shaft section; 22. First elastic clamp; 221. First elastic member; 222. First limiting column; 23. First protrusion; 3. Second connecting seat; 31. Second Rotating shaft; 311, fourth shaft section; 312, fifth shaft section; 313, sixth shaft section; 32, second elastic clamp; 321, second elastic member; 322, second limiting column; 33, second protrusion; 4, first gear; 5, second gear; 6, transmission gear set; 61, transmission gear; 611, gear body; 612, gear shaft; 7, cover body; 8, first torsion spring; 9, second torsion spring; 10, first door and window sash; 20, second door and window sash. DETAILED DESCRIPTION

[0027] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] Embodiment 1

[0032] See also Figures 1 to 8The present invention discloses a hinge mechanism for folding doors and windows, comprising a box body 1, a first connecting seat 2, a second connecting seat 3, a first gear 4, a second gear 5 and a transmission gear set 6; the first connecting seat 2 is fixed with a first rotating shaft 21, and the first rotating shaft 21 is rotatably connected to the box body 1; the second connecting seat 3 is fixed with a second rotating shaft 31, and the second rotating shaft 31 is rotatably connected to the box body 1; the first gear 4 is fixed on the first rotating shaft 21, and the first gear 4 and the first rotating shaft 21 rotate synchronously; the second gear 5 is fixed on the second rotating shaft 31, and the second gear 5 and the second rotating shaft 31 rotate synchronously; the transmission gear set 6 is rotatably connected to the box body 1 and meshedly connected between the first gear 4 and the second gear 5, and under the transmission of the transmission gear set 6, the first gear 4 and the second gear 5 rotate synchronously in the opposite direction, and under the drive of the first gear 4 and the second gear 5, the first connecting seat 2 and the second connecting seat 3 can be synchronously rotated in the opposite direction relative to the box body 1 between the unfolded position and the folded position. Specifically, the first connecting seat 2 is used to connect the first door and window sash 10, and the second connecting seat 3 is used to connect the second door and window sash 20.

[0033] Specifically, the synchronous counter-rotation of the first gear 4 and the second gear 5 means that when the first gear 4 rotates clockwise, the second gear 5 correspondingly rotates counterclockwise at the same speed; when the first gear 4 rotates counterclockwise, the second gear 5 correspondingly rotates clockwise at the same speed.

[0034] Specifically, when the first connecting seat 2 and the second connecting seat 3 are in the expanded position, the first door and window sash 10 and the second door and window sash 20 are correspondingly in the expanded state, and the folding door and window are closed at this time; when the first connecting seat 2 and the second connecting seat 3 are in the folded position, the first door and window sash 10 and the second door and window sash 20 are correspondingly in the folded state, and the folding door and window are opened at this time.

[0035] The hinge mechanism provided in this embodiment, on the one hand, thanks to the precise meshing transmission between the first gear 4, the second gear 5 and the transmission gear set 6, the first connecting seat 2 and the second connecting seat 3 can realize synchronous reverse rotation between the unfolded position and the folded position, which effectively solves the problem of poor rotation synchronization of the two connecting seats in the traditional hinge mechanism, so that the first door and window sash 10 and the second door and window sash 20 correspondingly connected to the first connecting seat 2 and the second connecting seat 3 can rotate synchronously in the opposite direction, ensuring the stability and coordination of the folding door during the unfolding and folding process, and because the hinge mechanism can ensure the synchronous rotation of the two connecting seats, the user can experience a smoother and smoother opening and closing experience when operating the folding door, which not only improves the convenience of use, but also enhances the user's overall satisfaction with the product; on the other hand, by introducing The combined design of the first gear 4, the second gear 5 and the transmission gear set 6 realizes the simplification and optimization of the internal structure of the hinge mechanism. This design not only reduces the overall complexity, but also improves the stability and durability of the mechanism, and reduces the risk of failure caused by complex structure; on the other hand, due to the meshing transmission between the first gear 4, the second gear 5 and the transmission gear set 6, the first connecting seat 2 and the second connecting seat 3 can be allowed to rotate inward or outward to the folded position, that is, whether the first gear 4 rotates clockwise and the second gear 5 rotates counterclockwise, or the first gear 4 rotates counterclockwise and the second gear 5 rotates clockwise, the first connecting seat 2 and the second connecting seat 3 can be allowed to rotate to the folded position. In this way, the user can push open the folding door and window inside or outside the door, which is more labor-saving and convenient to operate.

[0036] like Figure 4 and Figure 6 As shown, preferably, in this embodiment, the transmission gear set 6 includes two transmission gears 61, and the first gear 4, the two transmission gears 61, and the second gear 5 are meshed and connected in sequence. In this way, on the one hand, the setting of the two transmission gears 61 ensures that the first gear 4 and the second gear 5 can accurately rotate synchronously in the opposite direction. This precise rotation synchronization is very important for equipment that requires coordinated actions such as folding doors, and can significantly improve the stability and reliability of the equipment; on the other hand, compared with using a larger number of transmission gears 61, the design of the two transmission gears 61 in this embodiment makes the entire hinge mechanism more compact and simplified, which not only reduces the material cost and manufacturing cost, but also improves the assembly efficiency and maintainability of the mechanism. In addition, the design of the two transmission gears 61 makes the manufacturing process of the hinge mechanism simpler and more standardized. At the same time, due to the reduction in the number of components, the maintenance and replacement costs will also be reduced accordingly, which is very important for extending the service life of the equipment and improving the overall performance.

[0037] It should be noted that, in some other embodiments, the transmission gear set 6 may also include but is not limited to 4, 6 or 8 transmission gears 61. An even number of transmission gears 61 can enable the first gear 4 and the second gear 5 to rotate synchronously in opposite directions. According to actual needs, the number of transmission gear sets 6 can be flexibly adjusted. For example, in some application scenarios that require higher precision or greater torque, the number of transmission gears 61 can be increased, and this is not a sole limitation.

[0038] like Figure 7 As shown, specifically, in this embodiment, the transmission gear 61 includes a gear body 611 and a gear shaft 612 . The gear shaft 612 is fixed to the box body 1 , and the gear body 611 is rotatably connected to the gear shaft 612 .

[0039] like Figure 4 and Figure 6 As shown, preferably, in this embodiment, the projection of the line connecting the first rotating shaft 21, the gear shaft 612 of the two transmission gears 61 and the second rotating shaft 31 on the horizontal plane is arc-shaped. In this way, on the one hand, the arc-shaped layout makes the installation of the hinge mechanism in the folding door more flexible, can more effectively utilize the limited space, and avoid the space limitation that may be caused by the traditional straight line layout; on the other hand, the arc-shaped rotating shaft layout helps to disperse the stress of the folding door during the unfolding and folding process, making the entire mechanism more stable. This design can reduce the damage of components caused by stress concentration and extend the service life of the mechanism; on the other hand, the arc-shaped layout makes the meshing between the gears smoother, reduces the friction and resistance that may be caused by the straight line layout, which helps to improve the fluency and smoothness of the folding door during the opening and closing process, and enhances the user experience; on the other hand, the arc-shaped layout makes the contact between the gears more uniform, reduces the noise and vibration caused by uneven contact, which helps to reduce the noise pollution of the folding door during use and improves the comfort of the indoor environment.

[0040] It should be noted that in some other embodiments, for application scenarios with ample space and low requirements for structural stability, the layout of the shaft can adopt a linear layout, which is simple, easy and low-cost; or, according to specific needs and space limitations, the shaft layout can be considered to be designed as a polygon (such as a quadrilateral, hexagon, etc.). This layout can optimize space utilization to a certain extent while maintaining good structural stability.

[0041] like Figure 4 , Figure 6 and Figure 7As shown, preferably, in this embodiment, the first gear 4, the second gear 5 and each transmission gear 61 in the transmission gear set 6 have the same number of teeth and module. In this way, on the one hand, since all gears have the same number of teeth and module, the transmission ratio between them remains consistent, thereby ensuring the precise movement of the folding door or similar equipment during the unfolding and folding process. This precise transmission ratio is crucial to the stability and reliability of the equipment; on the other hand, gears with the same number of teeth and module are more uniform when meshing, reducing the noise and vibration caused by poor meshing, which helps to improve the overall performance of the equipment and the user experience, and gears with the same parameters are more evenly stressed during the transmission process, reducing gear wear and damage caused by uneven stress, thereby extending the service life of the equipment; on the other hand, since all gears have the same parameters, the manufacturing process can be simplified and the manufacturing cost can be reduced. At the same time, during the maintenance process, only one type of gear spare parts needs to be stocked, reducing the complexity and cost of maintenance.

[0042] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, preferably, in this embodiment, the hinge mechanism further includes a cover body 7, which is covered on the box body 1, and an assembly cavity is formed between the cover body 7 and the box body 1, and the first gear 4, the second gear 5 and the transmission gear set 6 are all located in the assembly cavity. In this way, on the one hand, the assembly cavity provides a closed environment for the first gear 4, the second gear 5 and the transmission gear set 6, effectively preventing dust, dirt and other impurities from entering the gear system, thereby reducing the wear and failure of the gears and extending the service life of the hinge mechanism; on the other hand, the closed environment helps to reduce the noise generated by the gears during the meshing process, making the operation of the folding door and other equipment quieter and improving the user experience; on the other hand, the existence of the cover body 7 prevents the user or other personnel from directly contacting the moving gears, reducing the risk of accidental injury and improving the safety of the product; on the other hand, the design of the cover body 7 can match the overall appearance of the device, improving the aesthetics and overall texture of the product; in addition, although the first gear 4, the second gear 5 and the transmission gear set 6 are encapsulated in the assembly cavity, the cover body 7 is usually designed to be detachable, which is convenient for cleaning, lubricating or replacing the gears when necessary.

[0043] like Figure 4 , Figure 6 and Figure 8As shown, preferably, in this embodiment, the first connecting seat 2 is provided with a first elastic clip 22, the second connecting seat 3 is provided with a second elastic clip 32, and the box body 1 is provided with a first limiting groove 15 and a second limiting groove 16. When the first connecting seat 2 and the second connecting seat 3 are rotated to the unfolded position, the first elastic clip 22 is clamped in the first limiting groove 15 and the second elastic clip 32 is clamped in the second limiting groove 16 to keep the first connecting seat 2 and the second connecting seat 3 in the unfolded position. When it is necessary to switch the first connecting seat 2 and the second connecting seat 3 to the folded position, the side wall of the box body 1 can press the first elastic clip 22 and the second elastic clip 32 and make the first elastic clip 22 disengage from the first limiting groove 15, and make the second elastic clip 32 disengage from the second limiting groove 16. In this way, on the one hand, when the first connecting seat 2 and the second connecting seat 3 are rotated to the unfolded position, the first elastic clip 22 is automatically engaged with the first limiting groove 15, and the second elastic clip 32 is engaged with the second limiting groove 16. This design ensures that the folding structure can stably maintain its position in the unfolded state and is not easily accidentally folded or loosened due to external force or vibration. On the other hand, the user does not need additional fixing steps or tools when unfolding the folding structure. The user only needs to simply rotate the connecting seat to the unfolded position, and the elastic clip can automatically engage with the limiting groove to achieve quick and stable locking. This design simplifies the operation process and improves the user experience.

[0044] like Figure 7 and Figure 8As shown, specifically, in this embodiment, the first elastic clamp 22 includes a first elastic member 221 and a first limiting column 222, the first elastic member 221 is arranged on the first connecting seat 2, and the first limiting member is connected to the first elastic member 221, the second elastic clamp 32 includes a second elastic member 321 and a second limiting column 322, the second elastic member 321 is arranged on the second connecting seat 3, and the second limiting column 322 is connected to the second elastic member 321; when the first connecting seat 2 and the second connecting seat 3 are rotated to the unfolded position, under the action of the first elastic member 221, the first limiting column 222 is snapped into the first limiting groove 15, and under the action of the second elastic member 321, the second limiting column 322 is snapped into the second limiting groove 16. In this way, the first elastic clamp 22 and the second elastic clamp 32 are respectively composed of the first elastic member 221 and the first limiting column 222, and the second elastic member 321 and the second limiting column 322. This structure enables the first limiting column 222 and the second limiting column 322 to be respectively inserted into the corresponding first limiting groove 15 and the second limiting groove 16 when the folding structure is unfolded, and a stable locking effect is achieved through the elastic force of the elastic member. This design effectively prevents the folding structure from accidentally folding or loosening in the unfolded state, thereby ensuring the stability and safety of the structure; on the other hand, due to the presence of the elastic member, the first limiting column 222 and the second limiting column 322 have a certain degree of self-adaptation during the clamping process, which means that even if there is a certain deviation or shaking of the first connecting seat 2 and the second connecting seat 3 when unfolded, the elastic member can also use its elastic force to make the limiting column smoothly inserted into the limiting groove, thereby achieving a stable locking effect and convenient operation experience:

[0045] like Figure 7 As shown, preferably, in this embodiment, the hinge mechanism further includes a first torsion spring 8 and a second torsion spring 9, the first torsion spring 8 is arranged between the first connection seat 2 and the box body 1, and the second torsion spring 9 is arranged between the second connection seat 3 and the box body 1. When the first connection seat 2 and the second connection seat 3 are rotated to the folded position, the first torsion spring 8 and the second torsion spring 9 are compressed; in this way, on the one hand, when the first connection seat 2 and the second connection seat 3 are rotated to the folded position, the first torsion spring 8 and the second torsion spring 9 are compressed and store energy. This design makes it necessary for the user to gently push the first torsion spring 8 and the second torsion spring 9 to release the stored energy when the door needs to be closed, and drive the first connection seat 2 and the second connection seat 3 to automatically rotate to the unfolded position. This automatic unfolding function not only simplifies the user's operation process, but also improves the convenience and efficiency of the operation; on the other hand, the introduction of the first torsion spring 8 and the second torsion spring 9 not only provides the power for automatic unfolding, but also enhances the structural stability of the hinge mechanism to a certain extent. During the folding and unfolding process, the elastic force of the torsion spring helps to maintain the close fit between the connection seat and the box body 1, and reduce the noise and wear caused by looseness or vibration. This design prolongs the service life of the hinge mechanism and improves the reliability and durability of the product.

[0046] like Figure 7 and Figure 8 As shown, specifically, in this embodiment, the first connecting seat 2 is provided with a first protrusion 23, the second connecting seat 3 is provided with a second protrusion 33, and the box body 1 is provided with a third protrusion 13 and a fourth protrusion 14; one elastic arm of the first torsion spring 8 is abutted against the first protrusion 23, and the other elastic arm is abutted against the third protrusion 13; one elastic arm of the second torsion spring 9 is abutted against the second protrusion 33, and the other elastic arm is abutted against the fourth protrusion 14. Such arrangement, on the one hand, ensures the stable positioning of the first torsion spring 8 and the second torsion spring 9 in the hinge mechanism, avoiding functional failure caused by loosening or displacement of the torsion spring. At the same time, the first protrusion 23 and the third protrusion 13 provide reliable support points for the first torsion spring 8, and the second protrusion 33 and the fourth protrusion 14 provide reliable support points for the second torsion spring 9, so that the elastic force of the torsion spring can be more effectively transmitted to the first connecting seat 2 and the second connecting seat 3, thereby realizing stable folding and unfolding of the first connecting seat 2 and the second connecting seat 3; on the other hand, the above-mentioned protrusions serve as the connecting points between the connecting seat and the box body 1. Through the elastic force of the torsion springs, the connection between the first connecting seat 2, the second connecting seat 3 and the box body 1 can be made tighter, reducing the risk of loosening or deformation caused by vibration or external force impact.

[0047] like Figure 7 As shown, preferably, in this embodiment, the first rotating shaft 21 is integrally formed with the first connecting seat 2, and the second rotating shaft 31 is integrally formed with the second connecting seat 3. In this way, on the one hand, the integrally formed design makes the connection between the first rotating shaft 21 and the first connecting seat 2 and between the second rotating shaft 31 and the second connecting seat 3 more secure, avoiding functional failure caused by loose connection or falling off. This design significantly improves the overall strength and stability of the hinge mechanism, allowing it to withstand greater external forces and impacts, and prolongs the service life of the product; on the other hand, the integrally formed design reduces the number of parts and simplifies the manufacturing and assembly process, which not only reduces production costs, but also improves production efficiency. At the same time, it reduces errors and failure rates in the assembly process and improves product reliability and consistency. On the other hand, the integrally formed design reduces unnecessary space waste, making the hinge mechanism more compact and lightweight, which is particularly important for application scenarios that require efficient space utilization, such as portable devices, furniture, and transportation.

[0048] like Figure 7 and Figure 8As shown, specifically, in this embodiment, the box body 1 is provided with a first connecting hole 11 and a second connecting hole 12, the first rotating shaft 21 includes a first shaft segment 211, a second shaft segment 212 and a third shaft segment 213 connected in sequence, the first shaft segment 211 is fixedly connected to the first gear 4, the second shaft segment 212 is rotatably connected to the first connecting hole 11, and the first gear 4 and the third shaft segment 213 form a clamp for the bottom wall of the box body 1; the second rotating shaft 31 includes a fourth shaft segment 311, a fifth shaft segment 312 and a sixth shaft segment 313 connected in sequence, the fourth shaft segment 311 is fixedly connected to the second gear 5, the fifth shaft segment 312 is rotatably connected to the second connecting hole 12, and the second gear 5 and the sixth shaft segment 313 form a clamp for the bottom wall of the box body 1; in this way, the stability of the entire structure is further enhanced and the durability of the product is improved.

[0049] It should be noted that, in some other embodiments, the first connecting seat 2 is provided with a first card block, the second connecting seat 3 is provided with a second card block, and the box body 1 is also provided with a first card position and a second card position; when the first connecting seat 2 and the second connecting seat 3 are rotated to the unfolded position, the first card block is snapped into the first card position, and the second card block is snapped into the second card position to limit the first connecting seat 2 and the second connecting seat 3 from folding outward, thereby only allowing the first connecting seat 2 and the second connecting seat 3 to fold inward; or, when the first connecting seat 2 and the second connecting seat 3 are rotated to the unfolded position, the first card block is snapped into the first card position, and the second card block is snapped into the second card position to limit the first connecting seat 2 and the second connecting seat 3 from folding inward, thereby only allowing the first connecting seat 2 and the second connecting seat 3 to fold outward.

[0050] like Figure 1 and Figure 2 As shown, in addition, the present embodiment also provides a folding door and window, including the hinge mechanism as described above, and also including a first door and window sash 10 and a second door and window sash 20, the first door and window sash 10 is fixedly connected to the first connecting seat 2, and the second door and window sash 20 is fixedly connected to the second connecting seat 3; when the first connecting seat 2 and the second connecting seat 3 are rotated to the unfolded position, the first door and window sash 10 and the second door and window sash 20 are synchronously rotated in the opposite direction to the unfolded state; when the first connecting seat 2 and the second connecting seat 3 are rotated to the folded position, the first door and window sash 10 and the second door and window sash 20 are synchronously rotated in the opposite direction to the folded state; the folding door and window has all the advantages of the above-mentioned hinge mechanism, which will not be repeated here.

[0051] In summary, the hinge mechanism disclosed in the present invention and the folding door and window including the hinge mechanism can at least bring the following beneficial technical effects:

[0052] 1) The problem of poor rotation synchronization of the two connecting seats in the traditional hinge mechanism is effectively solved, so that the first door and window sash 10 and the second door and window sash 20 correspondingly connected to the first connecting seat 2 and the second connecting seat 3 can rotate synchronously in opposite directions, ensuring the stability and coordination of the folding door during the unfolding and folding process;

[0053] 2) Since the hinge mechanism can ensure the synchronous rotation of the two connecting seats, users can experience a smoother opening and closing experience when operating the folding door, which not only improves the convenience of use, but also enhances the overall satisfaction of users with the product;

[0054] 3) Compared with using a larger number of transmission gears 61, the design of two transmission gears 61 makes the entire hinge mechanism more compact and simplified, which not only reduces material cost and manufacturing cost, but also improves assembly efficiency and maintainability of the mechanism;

[0055] 4) The projection of the line connecting the first rotating shaft 21, the gear shafts 612 of the two transmission gears 61 and the second rotating shaft 31 on the horizontal plane is arc-shaped. The arc-shaped layout makes the installation of the hinge mechanism in the folding door more flexible, can more effectively utilize the limited space, and avoids the space limitations that may be caused by the traditional straight line layout.

[0056] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above-mentioned technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also regarded as the protection scope of the present invention.

Claims

1. A hinge mechanism for folding doors and windows, characterized in that: include: Box body (1); A first connecting seat (2) is fixedly provided with a first rotating shaft (21), wherein the first rotating shaft (21) is rotatably connected to the box body (1); A second connecting seat (3) is fixedly provided with a second rotating shaft (31), and the second rotating shaft (31) is rotatably connected to the box body (1); A first gear (4) is fixedly mounted on the first rotating shaft (21), and the first gear (4) and the first rotating shaft (21) rotate synchronously; A second gear (5) is fixedly mounted on the second rotating shaft (31), and the second gear (5) and the second rotating shaft (31) rotate synchronously; A transmission gear set (6) is rotatably connected to the box body (1) and meshedly connected between the first gear (4) and the second gear (5). Under the transmission of the transmission gear set (6), the first gear (4) and the second gear (5) rotate synchronously in opposite directions. Driven by the first gear (4) and the second gear (5), the first connecting seat (2) and the second connecting seat (3) can rotate synchronously in opposite directions to an unfolded position or a folded position.

2. The hinge mechanism according to claim 1, characterized in that: The transmission gear set (6) comprises two transmission gears (61), and the first gear (4), the two transmission gears (61), and the second gear (5) are meshed and connected in sequence.

3. The hinge mechanism according to claim 1, characterized in that: The projection of a line connecting the first rotating shaft (21), the rotating shafts of all the gears in the transmission gear set (6) and the second rotating shaft (31) on a horizontal plane is in the shape of an arc.

4. The hinge mechanism according to claim 1, characterized in that: The first gear (4), the second gear (5) and each gear in the transmission gear set (6) have the same number of teeth and module.

5. The hinge mechanism according to claim 1, characterized in that: The hinge mechanism further comprises a cover body (7), wherein the cover body (7) is arranged to cover the box body (1), an assembly cavity is formed between the cover body (7) and the box body (1), and the first gear (4), the second gear (5) and the transmission gear set (6) are all located in the assembly cavity.

6. The hinge mechanism according to any one of claims 1 to 5, characterized in that: The first connecting seat (2) is provided with a first elastic clamp (22), the second connecting seat (3) is provided with a second elastic clamp (32), and the box body (1) is provided with a first limiting groove (15) and a second limiting groove (16). When the first connecting seat (2) and the second connecting seat (3) are rotated to the unfolded position, the first elastic clamp (22) is engaged with the first limiting groove (15) and the second elastic clamp (32) is engaged with the second limiting groove (16) to keep the first connecting seat (2) and the second connecting seat (3) in the unfolded position.

7. The hinge mechanism according to any one of claims 1 to 5, characterized in that: The hinge mechanism further comprises a first torsion spring (8) and a second torsion spring (9); the first torsion spring (8) is arranged between the first connecting seat (2) and the box body (1); the second torsion spring (9) is arranged between the second connecting seat (3) and the box body (1); when the first connecting seat (2) and the second connecting seat (3) are rotated to a folded position, the first torsion spring (8) and the second torsion spring (9) are compressed.

8. The hinge mechanism according to claim 7, characterized in that: The first connecting seat (2) is provided with a first protrusion (23), the second connecting seat (3) is provided with a second protrusion (33), and the box body (1) is provided with a third protrusion (13) and a fourth protrusion (14); One elastic arm of the first torsion spring (8) is disposed against the first protrusion (23), and the other elastic arm is disposed against the third protrusion (13); one elastic arm of the second torsion spring (9) is disposed against the second protrusion (33), and the other elastic arm is disposed against the fourth protrusion (14).

9. The hinge mechanism according to claim 1 or 2 or 3 or 4 or 5 or 8, characterized in that: The first rotating shaft (21) is integrally formed on the first connecting seat (2), and / or the second rotating shaft (31) is integrally formed on the second connecting seat (3).

10. Folding doors and windows, characterized in that: It comprises a hinge mechanism as described in any one of claims 1 to 9, and also comprises a first door and window sash (10) and a second door and window sash (20), wherein the first door and window sash (10) is fixedly connected to the first connecting seat (2), and the second door and window sash (20) is fixedly connected to the second connecting seat (3); when the first connecting seat (2) and the second connecting seat (3) are rotated to the unfolded position, the first door and window sash (10) and the second door and window sash (20) are synchronously rotated in the opposite direction to the unfolded state; when the first connecting seat (2) and the second connecting seat (3) are rotated to the folded position, the first door and window sash (10) and the second door and window sash (20) are synchronously rotated in the opposite direction to the folded state.

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