Hinge mechanism and inward tilt-turn window comprising same

Abstract

The utility model discloses a hinge mechanism and an inward tilt-turn window comprising the same. The hinge mechanism comprises a pull rod assembly which comprises a connecting base and a lock rod, the lock rod is arranged on the connecting base in a sliding mode, and the lock rod is provided with a first locking part and a driving part; the hinge comprises a fixed hinge and a movable hinge, and the movable hinge is rotationally arranged on the fixed hinge; the connecting rod assembly comprises a first connecting rod, a second connecting rod and a third connecting rod; one end of the first connecting rod is hinged to the connecting base and can slide relative to the connecting base in the first direction, the other end is connected to the movable hinge, and the first connecting rod is provided with a second locking part; two ends of the second connecting rod are respectively hinged with the connecting seat and the first connecting rod; the other end of the third connecting rod is hinged to the second connecting rod and can slide along the second connecting rod; when the locking rod slides to enable the first locking part to be separated from the second locking part, the locking rod slides to drive the driving part to drive the third connecting rod to swing, and under driving of the third connecting rod, the first connecting rod and the second connecting rod can swing relative to the connecting base so that the window body can be switched to be in an inward-falling state.

Description

TECHNICAL FIELD

[0001] The utility model relates to door and window hardware fitting technical field especially hinge mechanism and including its inside open inside reverse window. BACKGROUND

[0002] Inside open inside reverse window can pass through the handle of rotating window body, drive internal hinge device to lock or unlock the connection of window body and window frame hinge, so that user can operate window body into three different position states of closing, flat opening, top inside reverse according to use demand. The hinge device of inside open inside reverse window and inside open inside reverse window are disclosed in Chinese patent CN112177469A, the hinge device of inside open inside reverse window includes: a pull rod mechanism including a connecting seat and a lock rod slidingly connected opposite to the connecting seat; a hinge arranged at a distance from the connecting seat when applied, used for connecting the window frame and the window body, the side of the lock rod close to the hinge is provided with a first locking part; a link assembly including a main link and an auxiliary link, one end of the main link is slidingly hinged on the connecting seat along the sliding direction of the lock rod, the other end is fixedly connected with the movable leaf of the hinge, the auxiliary link is hinged at both ends with the connecting seat and the main link, the main link is provided with a second locking part matched with the first locking part; when the first locking part and the second locking part are locked, the link assembly, the pull rod mechanism and the movable leaf of the hinge can be synchronously swung relative to the fixed leaf of the hinge, when the lock rod slides to make the first locking part separate from the second locking part, the pull rod mechanism can swing relative to the link assembly; the end of the lock rod close to the hinge is provided with a lock pin part, the other end of the movable leaf and / or the main link is provided with a lock hole, when the first locking part and the second locking part are locked, the lock pin part is inserted into the lock hole, when the first locking part separates from the second locking part, the lock pin part slides away from the lock hole with the lock rod.

[0003] However, the existing inside open inside reverse window needs to rotate the handle to drive the lock rod to slide to separate the first locking part and the second locking part when switching to the top inside reverse state, and then an action force perpendicular to the sliding direction of the lock rod is applied to the window body to make the link assembly expand, thereby realizing inside reverse, and the operation is not simple and convenient enough. UTILITY MODEL CONTENTS

[0004] In order to overcome at least one of the defects of the prior art described above, the utility model provides a hinge mechanism and an inside open inside reverse window comprising the same, aiming to simplify the operation steps of switching the window body to the top inside reverse state by optimizing the structure design, and improve the convenience and efficiency of user use.

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

[0006] The hinge mechanism comprises a pull rod assembly, a hinge, and a connecting rod assembly, wherein the pull rod assembly comprises a connecting seat and a lock rod, the lock rod is slidably arranged in the connecting seat along a first direction, the lock rod is provided with a first locking part and a driving part; the hinge comprises a fixed leaf and a movable leaf, the movable leaf is rotatably arranged on the fixed leaf; the connecting rod assembly comprises a first connecting rod, a second connecting rod and a third connecting rod; one end of the first connecting rod is hingedly connected to the connecting seat and can slide relative to the connecting seat along the first direction, the other end of the first connecting rod is connected to the movable leaf, the first connecting rod is provided with a second locking part; the second connecting rod is hingedly connected to the connecting seat and the first connecting rod at two ends respectively; one end of the third connecting rod is hingedly connected to the connecting seat, the other end of the third connecting rod is hingedly connected to the second connecting rod and can slide along the second connecting rod; when the first locking part and the second locking part are locked, the pull rod assembly and the connecting rod assembly can synchronously swing relative to the fixed leaf; when the lock rod slides to make the first locking part disengage from the second locking part, the lock rod sliding can drive the driving part to drive the third connecting rod to swing relative to the connecting seat and the second connecting rod, and under the driving of the third connecting rod, the first connecting rod and the second connecting rod can swing relative to the connecting seat.

[0007] According to some embodiments of the present application, the driving part is a first sliding block, the first sliding block moves synchronously with the lock rod, the third connecting rod is provided with a guide groove and a transmission groove connected thereto; when the first locking part and the second locking part are locked, the extension direction of the guide groove is parallel to the first direction, and the extension direction of the transmission groove is inclined to the first direction; when the lock rod slides to make the first locking part disengage from the second locking part, under the driving of the lock rod, the first sliding block can slide from the guide groove to the transmission groove along the first direction, so that the first sliding block is in transmission connection with the transmission groove, and continuous sliding of the first sliding block along the first direction can push the transmission groove to make the third connecting rod swing relative to the connecting seat and the second connecting rod.

[0008] According to some embodiments of the present application, the connecting seat is provided with a first sliding groove extending along the first direction, and the first sliding block is slidably connected in the first sliding groove.

[0009] According to some embodiments of the present application, the transmission groove comprises a first sub-groove and a second sub-groove, the first sub-groove is connected with the guide groove, and the second sub-groove is connected with the first sub-groove to form a V shape; when the first connecting rod and the second connecting rod swing relative to the connecting seat, the connecting seat can move away from the fixed leaf along a second direction; the second sub-groove, the first sub-groove and the guide groove are arranged in the first direction in sequence, and the first sub-groove is located in front of the guide groove in the second direction.

[0010] According to some embodiments of the present application, an arc-shaped transition part is formed at the joint of the first sub-groove and the second sub-groove.

[0011] According to some embodiments of the present application, the connecting seat is concavely provided with an avoiding groove, one end of the third connecting rod is rotatably connected to the avoiding groove, and the first connecting rod, the second connecting rod and the third connecting rod are arranged in sequence from top to bottom.

[0012] According to some embodiments of the present application, the second connecting rod is provided with a second sliding groove extending along the length direction thereof, one end of the third connecting rod is provided with a second sliding block, the second sliding block is slidably connected to the second sliding groove, and the second sliding block is rotatable relative to the second sliding groove.

[0013] According to some embodiments of the present application, the connecting seat is provided with a third sliding groove extending along the first direction, one end of the first connecting rod is provided with a third sliding block, the third sliding block is slidably connected to the third sliding groove, and the third sliding block is rotatable relative to the third sliding groove.

[0014] According to some embodiments of the present application, one of the first locking part and the second locking part is a locking groove, and the other is a locking block.

[0015] In addition, the present application also provides an inward opening and inward tilting window comprising the hinge mechanism according to any one of the above embodiments, and further comprising a handle, a window frame and a window body, the fixed leaf is fixedly connected to the window frame, the connecting seat is fixedly connected to the window body, the handle is arranged on the window body and is in transmission connection with the locking rod, and the handle can control the sliding of the locking rod relative to the connecting seat.

[0016] In summary, the hinge mechanism and the inward opening and inward tilting window comprising the same provided by the present application have at least the following technical effects:

[0017] The separation of the locking parts and the driving of the connecting rod assembly are simultaneously realized through the sliding of the locking rod, which ingeniously utilizes the power of the sliding of the locking rod to directly drive the swinging and unfolding of the connecting rod assembly, without the need of the user to exert additional vertical force on the window body, and the user only needs to realize the switching of the window body in multiple states through a simple rotating handle action, so that the operation steps of switching the window body to the top inward tilting state are simplified, the efficiency of the switching of the window body state is improved, the use difficulty is reduced, and the use convenience and satisfaction of the user are improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structural schematic view of an inward opening and inward tilting window (in a closed state) according to an embodiment of the present application;

[0019] Figure 2 FIG. 2 is a structural schematic view of an inward opening and inward tilting window (in a casement state) according to an embodiment of the present application;

[0020] Figure 3The structure schematic view of the hinge assembly of the embodiment of the utility model is shown in the figure when the window body is in the top inward tilting state.

[0021] Figure 4 The structure schematic view of the hinge assembly of the embodiment of the utility model is shown in the figure when the window body is in the top inward tilting state.

[0022] Figure 5 The structure schematic view of the hinge assembly of the embodiment of the utility model is shown in the figure when the window body is in the top inward tilting state. Figure 4 The local enlarged view of the A part in the figure.

[0023] Figure 6 The local enlarged view of the B part in the figure. Figure 4 The local enlarged view of the B part in the figure.

[0024] Figure 7 The structure schematic view of the hinge assembly of the embodiment of the utility model is shown in the figure when the window body is in the top inward tilting state.

[0025] Figure 8 The structure schematic view of the hinge assembly of the embodiment of the utility model is shown in the figure when the window body is in the top inward tilting state.

[0026] Figure 9 The structure schematic view of the hinge assembly of the embodiment of the utility model is shown in the figure when the window body is in the top inward tilting state.

[0027] Figure 10 The structure schematic view of the third connecting rod of the embodiment of the utility model is shown in the figure.

[0028] In the figure, the meaning of the reference signs is as follows:

[0029] 1, pull rod assembly; 11, connecting seat; 111, first sliding groove; 112, avoiding groove; 113, third sliding groove; 12, lock rod; 121, first locking part; 122, driving part; 2, hinge; 21, fixed page; 22, movable page; 3, connecting rod assembly; 31, first connecting rod; 311, second locking part; 312, third sliding block; 32, second connecting rod; 321, second sliding groove; 33, third connecting rod; 331, guide groove; 332, transmission groove; 3321, first sub-groove; 3322, second sub-groove; 3323, arc transition part; 333, second sliding block; 4, window frame; 5, window body; 6, handle. DETAILED DESCRIPTION

[0030] In order to better understand and implement, the technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model.

[0031] 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 position or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0032] 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 specific embodiments and are not intended to limit the utility model.

[0033] The utility model will be further described in detail below in combination with the drawings.

[0034] Please refer to Figures 1 to 10 , the embodiment discloses a hinge mechanism, which comprises a pull rod assembly 1, a hinge 2 and a connecting rod assembly 3;The pull rod assembly 1 comprises a connecting seat 11 and a lock rod 12, the lock rod 12 is slid along the first direction in the connecting seat 11, the lock rod 12 is equipped with the first lock 121 and the drive part 122;The hinge 2 comprises a fixed page 21 and a movable page 22, and the movable page 22 is rotatably arranged on the fixed page 21;The connecting rod assembly 3 comprises a first connecting rod 31, a second connecting rod 32 and a third connecting rod 33;One end of the first connecting rod 31 is hingedly connected to the connecting seat 11 and can slide relative to the connecting seat 11 along the first direction, the other end is connected to the movable page 22, and the first connecting rod 31 is provided with a second lock 311;The two ends of the second connecting rod 32 are respectively hingedly connected to the connecting seat 11 and the first connecting rod 31;One end of the third connecting rod 33 is hingedly connected to the connecting seat 11, and the other end is hingedly connected to the second connecting rod 32 and can slide along the second connecting rod 32;When the first lock 121 and the second lock 311 are locked, the first connecting rod 31, the second connecting rod 32 and the third connecting rod 33 are folded to form a character, and the pull rod assembly 1 and the connecting rod assembly 3 can swing synchronously relative to the fixed page 21;When the lock rod 12 slides to make the first lock 121 separate from the second lock 311, the lock rod 12 can drive the drive part 122 to drive the third connecting rod 33 to swing relative to the connecting seat 11 and the second connecting rod 32, and under the drive of the third connecting rod 33, the first connecting rod 31 and the second connecting rod 32 can swing relative to the connecting seat 11 and form a herringbone shape.

[0035] As Figure 4 , Figure 7 and Figure 8 shown, specifically, in the embodiment, the first lock 121 is fixed relative to the lock rod 12, and the first lock 121 moves synchronously with the lock rod 12.

[0036] As Figure 1 , Figure 2 and Figure 3 illustrated, specifically, the connecting seat 11 is used for fixing the connecting window body 5, the fixed leaf 21 is used for fixing the connecting window frame 4, and the first connecting rod 31 and the second connecting rod 32 can drive the connecting seat 11 to move away from the fixed leaf 21 when the connecting seat 11 swings relative to the connecting seat 11, so as to smoothly switch the window body 5 to the top-inverted state.

[0037] Specifically, in the embodiment, the first direction can refer to the e1 direction in Figure 9 .

[0038] Specifically, the lock rod 12 is also used for transmission connection with the handle 6, and the lock rod 12 can be driven to slide along the first direction relative to the connecting seat 11 by rotating the handle 6.

[0039] The hinge mechanism provided in the embodiment realizes the separation of the locking part and the driving of the connecting rod assembly 3 by sliding the lock rod 12, which ingeniously uses the power of the sliding of the lock rod 12 to directly drive the swinging and unfolding of the connecting rod assembly 3, without the need for the user to exert additional vertical force on the window body 5. The user only needs to realize the state switching of the window body 5 by a simple rotating handle 6 action, which simplifies the operation steps of switching the window body 5 to the top-inverted state, improves the state switching efficiency of the window body 5, reduces the use difficulty, and improves the use convenience and satisfaction of the user.

[0040] As Figure 4 , Figure 5 , Figure 7 , Figure 8 and Figure 9As shown, preferably, in the present embodiment, the driving part 122 is a first slider which moves synchronously with the lock rod 12, and the third connecting rod 33 is provided with a guide groove 331 and a transmission groove 332 connected with each other; when the first locking part 121 and the second locking part 311 are locked, the extension direction of the guide groove 331 is parallel to the first direction, and the extension direction of the transmission groove 332 is inclined to the first direction; when the first locking part 121 is disengaged from the second locking part 311 by sliding the lock rod 12, the first slider can slide from the guide groove 331 to the transmission groove 332 along the first direction under the drive of the lock rod 12, so as to drive the first slider to be connected with the transmission groove 332, and the first slider can continue to slide along the first direction to push the transmission groove 332, so as to drive the third connecting rod 33 to swing relative to the connecting base 11 and the second connecting rod 32, and under the drive of the third connecting rod 33, the first connecting rod 31 and the second connecting rod 32 can swing relative to the connecting base 11 and unfold, so as to drive the connecting base 11 to move away from the fixed leaf 21, and the window body 5 can be switched to the top-inverted state smoothly; when it is needed to fold the first connecting rod 31, the second connecting rod 32 and the third connecting rod 33 into a linear type, the lock rod 12 can be driven to slide along the first direction, the first slider moves synchronously with the lock rod 12, and the first slider can drive the third connecting rod 33 to swing through the transmission connection between the first slider and the transmission groove 332, and under the drive of the third connecting rod 33, the first connecting rod 31 and the second connecting rod 32 can be folded with the third connecting rod 33 into a linear type structure, the first slider is connected with the guide groove 331 after sliding out of the transmission groove 332, and the slide rod can continue to move along the first direction until the first matching part and the second matching part are locked, and the window body 5 can be switched to the closed state or the flat-open state.

[0041] In this way, on the one hand, by designing the first slider as the driving part 122 and making it move synchronously with the lock rod 12, the close and unlock actions are closely linked, which not only simplifies the operation steps, but also ensures that the lock rod 12 can accurately trigger the movement of the first slider when sliding, thereby efficiently starting the subsequent unlock and window body 5 state switching process. On the other hand, the design of the guide groove 331 and the transmission groove 332 on the third connecting rod 33 ensures the stability of the locking action when the first locking part 121 and the second locking part 311 need to be locked. In the expansion process of the connecting rod assembly 3, by designing the first slider as the driving part 122 and making it move synchronously with the lock rod 12, the close and unlock actions are closely linked, which not only simplifies the operation steps, but also ensures that the lock rod 12 can accurately trigger the movement of the first slider when sliding, thereby efficiently starting the subsequent unlock and window body 5 state switching process. On the other hand, the design of the connecting rod assembly 3 makes the connection between the components tight and stable, ensuring the stability and safety of the window body 5 during the switching process. In addition, the cooperation of the first slider with the guide groove 331 and the transmission groove 332, as well as the sliding design of the lock rod 12 and the connecting seat 11, reflects the compactness and rationality of the structure design. Users only need to perform a simple lock rod 12 sliding operation to achieve different state switching of the window body 5, which is simple and reliable to operate.

[0042] As Figure 8 and Figure 9 shown, preferably, in the present embodiment, the connecting seat 11 is provided with a first sliding groove 111 extending in the first direction, and the first slider is slidingly connected in the first sliding groove 111. In this way, on the one hand, the first sliding groove 111 provides accurate guidance for the first slider, ensuring that the first slider can move along the predetermined path during sliding, avoiding deviation or jamming. This design enables the first slider to accurately cooperate with the guide groove 331 and the transmission groove 332, achieving accurate transmission and positioning, forming a stable sliding connection structure, improving the stability and reliability of the entire mechanism, reducing the risk of failure due to looseness or wear, and prolonging the service life of the mechanism. On the other hand, the first sliding groove 111 extends in the first direction, which is consistent with the movement direction of the lock rod 12, optimizing the space utilization, making the entire mechanism more compact and efficient, reducing unnecessary space waste, and improving the integration and overall performance of the mechanism.

[0043] As Figure 4 , Figure 5 , Figure 7 , Figure 8 and Figure 9As shown, preferably, in the present embodiment, the transmission groove 332 comprises a first sub-groove 3321 and a second sub-groove 3322, the first sub-groove 3321 is connected with the guide groove 331, and the second sub-groove 3322 is connected with the first sub-groove 3321 to form a V-shaped groove; when the first link 31 and the second link 32 oscillate relative to the connecting seat 11, the connecting seat 11 can move away from the fixed leaf 21 in the second direction; the second sub-groove 3322, the first sub-groove 3321 and the guide groove 331 are arranged in the first direction in sequence, and the first sub-groove 3321 is located in front of the guide groove 331 in the second direction; this design enables the first link 31 to smoothly enter the first sub-groove 3321 after leaving the guide groove 331 and continue to move along the path of the V-shaped groove. In this way, when the lock rod 12 slides to disengage the first locking part 121 from the second locking part 311, the first slider is driven by the lock rod 12 to slide along the first sliding groove 111 to the end of the guide groove 331 and smoothly enter the first sub-groove 3321. At this time, the first slider forms a transmission connection with the side wall of the first sub-groove 3321, that is, the first slider can push the side wall of the first sub-groove 3321 during the sliding process, thereby driving the third link 33 to start oscillating relative to the connecting seat 11 and the second link 32. As the first slider continues to slide in the first sub-groove 3321, it gradually approaches the connection between the first sub-groove 3321 and the second sub-groove 3322. When the first slider reaches the connection, it smoothly enters the second sub-groove 3322 along the path of the V-shaped groove and continues to slide in the second sub-groove 3322. In this process, the first slider maintains transmission connection with the side walls of the first sub-groove 3321 and the second sub-groove 3322 in sequence, ensuring the continuity and stability of the transmission. When the first slider slides to the end in the second sub-groove 3322, the third link 33 has completed the predetermined oscillation angle under the pushing of the first slider, and the first link 31 and the second link 32 have also completed the oscillation and expansion accordingly. In this way, on the one hand, the smooth sliding of the first slider between the first sub-groove 3321 and the second sub-groove 3322 ensures the continuity and stability of the transmission, avoiding the impact and wear caused by sudden changes in direction; on the other hand, by accurately designing the shape and arrangement order of the first sub-groove 3321 and the second sub-groove 3322, the oscillation angle of the first link 31 and the second link 32 can be accurately controlled, thereby meeting different use requirements; on the other hand, the design of the V-shaped groove provides a larger contact area and oscillation space, enabling the hinge mechanism to more flexibly adapt to different use scenarios and installation conditions.

[0044] Specifically, in the present embodiment, the second direction can refer to the e2 direction in the following figure. Figure 9

[0045] As shown in Figure 7 , Figure 8 and Figure 9 ​As shown, preferably, in this embodiment, an arc-shaped transition portion 3323 is formed at the joint of the first sub-slot 3321 and the second sub-slot 3322. In this way, the presence of the arc-shaped transition portion 3323 enables the first slider to experience a smooth and continuous transition phase during the process of sliding from the first sub-slot 3321 to the second sub-slot 3322, which reduces the impact force and friction caused by the sudden change of the slot, prolongs the service life of the mechanism, and ensures the smoothness of the transmission. Secondly, the smooth curve design of the arc-shaped transition portion 3323 enables the first slider to make more uniform contact with the slot wall during the sliding process, reducing wear caused by local stress concentration. This not only improves the durability of the mechanism, but also reduces maintenance costs. Moreover, the design of the arc-shaped transition portion 3323 enables the first slider to transmit power more smoothly during the sliding process, reducing energy loss caused by the sudden change of the slot. This improves the efficiency of the transmission, enabling the mechanism to output more power or achieve faster response speed under the same input, thereby enabling the user to experience a smoother and smoother transmission process when operating the hinge mechanism.

[0046] It should be noted that in some other embodiments, the transmission slot 332 can also be but not limited to U-shaped or C-shaped or L-shaped, etc., which can be selected according to actual needs, and is not limited herein.

[0047] As shown in Figure 4 and Figure 8 , preferably, in this embodiment, the connecting seat 11 is recessed with a clearance groove 112, one end of the third connecting rod 33 is rotatably connected to the clearance groove 112, and the first connecting rod 31, the second connecting rod 32 and the third connecting rod 33 are arranged in order from top to bottom. In this way, the design of the clearance groove 112 enables the third connecting rod 33 to be more compactly installed on the connecting seat 11, effectively utilizing the space resources, and this arrangement avoids interference between the connecting rods, ensuring the compactness and stability of the mechanism.

[0048] As shown in Figure 7 , Figure 8 and Figure 9 , preferably, in this embodiment, the second connecting rod 32 is provided with a second sliding groove 321 extending along the length direction thereof, one end of the third connecting rod 33 is provided with a second sliding block 333, the second sliding block 333 is slidingly connected to the second sliding groove 321, and the second sliding block 333 is rotatable relative to the second sliding groove 321. In this way, the cooperative design of the second sliding block 333 and the second sliding groove 321 can limit the movement range of the third connecting rod 33 to a certain extent, preventing it from swinging excessively or deviating from the predetermined trajectory. This design enhances the stability of the mechanism, enabling it to perform the predetermined action more reliably.

[0049] As shown in Figure 7 , Figure 8 and Figure 9As shown, preferably, in this embodiment, the connecting base 11 is provided with a third sliding groove 113 extending in the first direction, and one end of the first connecting rod 31 is provided with a third sliding block 312 which is slidingly connected to the third sliding groove 113, and the third sliding block 312 is rotatable relative to the third sliding groove 113. In this way, the cooperation between the third sliding block 312 and the third sliding groove 113 can limit the movement range of the first connecting rod 31 to a certain extent, preventing it from swinging excessively or deviating from the predetermined trajectory, which enhances the stability of the mechanism and enables it to perform the predetermined action more reliably, thereby improving the reliability and durability of the overall mechanism.

[0050] As shown in Figure 4 , Figure 6 , Figure 7 and Figure 8 , preferably, in this embodiment, the first locking part 121 is a locking slot, and the second locking part 311 is a locking block. In this way, the cooperation between the locking slot and the locking block can form a stable locking structure, and when the locking block is completely inserted into the locking slot, the friction between them can prevent the locking block from sliding out accidentally, thereby ensuring the stability and safety of the mechanism. Moreover, the design of the locking slot and the locking block makes the locking and unlocking operations simple and intuitive, and users only need to push or pull the locking block to easily realize the locking and unlocking functions without the need for complex operation steps or tools.

[0051] It should be noted that in some other embodiments, the first locking part 121 can be a locking block, and the second locking part 311 correspondingly is a locking slot, which can be selected according to actual needs, and is not uniquely limited here.

[0052] As shown in Figure 7 , preferably, in this embodiment, the movable page 22 is a four-bar linkage mechanism, and one end of the first connecting rod 31 is hinged to a connecting rod of one of the four-bar linkage mechanisms. In this way, the four-bar linkage mechanism can provide stable support and strength through reasonable layout and connection design of the rod members, which enables the movable page 22 to maintain a stable movement state when subjected to load or external force, and is not prone to deformation or damage. Moreover, the four-bar linkage mechanism has a compact structure and can realize complex movement functions in a limited space, which makes the design of the movable page 22 more flexible and can adapt to different installation space and layout requirements. Furthermore, the length of the rod members and the position of the connecting points of the four-bar linkage mechanism can be adjusted and optimized according to actual needs, and by changing these parameters, the movement trajectory, speed and acceleration and other performance parameters of the movable page 22 can be flexibly adjusted to meet specific application requirements.

[0053] It should be noted that in some other embodiments, the movable leaf 22 can also be a movable seat rotatably connected to the fixed leaf 21, and one end of the first connecting rod 31 can be fixed to the movable seat and rotate with the movable seat.

[0054] As shown in Figure 1 , Figure 2 and Figure 3 , in addition, the embodiment also provides an inward opening and inward tilting window, which comprises the hinge mechanism as above, and further comprises a handle 6, a window frame 4 and a window body 5, the fixed leaf 21 is fixedly connected to the window frame 4, the connecting seat 11 is fixedly connected to the window body 5, the handle 6 is arranged on the window body 5 and is in transmission connection with the lock rod 12, and the handle 6 can control the sliding of the lock rod 12 relative to the connecting seat 11. Figure 1 As shown in the embodiment, when the handle 6 is in a vertically downward position, the first locking part 121 and the second locking part 311 are locked with each other, the lock rod 12 locks the window body 5 on the window frame 4, and the window body 5 is in a closed state. Figure 2 As shown in the embodiment, when the handle 6 is rotated to a horizontal position, the lock rod 12 releases the locking of the window body 5, and the window body 5 can be moved inwardly by the rotation of the hinge 2, at this time, the first locking part 121 and the second locking part 311 are still locked with each other, and the pull rod assembly 1 and the connecting rod assembly 3 are in a straight line and can be synchronously swung relative to the fixed leaf 21. Figure 3 As shown in the embodiment, when the handle 6 is rotated to a vertically upward position, the first locking part 121 and the second locking part 311 are separated from each other, and the continuous sliding of the lock rod 12 can drive the driving part 122 to drive the third connecting rod 33 to swing relative to the connecting seat 11 and the second connecting rod 32, and under the driving of the third connecting rod 33, the first connecting rod 31 and the second connecting rod 32 can swing relative to the connecting seat 11 to form a herringbone shape, so that the window body 5 is away from the window frame 4 in a second direction, and the window body 5 is switched to an inward tilting state, and the upper part of the window body 5 is inclined inwardly to realize the ventilation function.

[0055] As described above, the hinge mechanism and the inward opening and inward tilting window comprising the same can at least bring the following beneficial technical effects:

[0056] 1) The sliding of the lock rod 12 simultaneously realizes the separation of the locking parts and the driving of the connecting rod assembly 3, which ingeniously utilizes the power of the sliding of the lock rod 12 to directly drive the swinging and expansion of the connecting rod assembly 3, without the need of the user to exert additional vertical force on the window body 5, and the user only needs to rotate the handle 6 to easily realize the switching of the window body 5 in multiple states, thereby simplifying the operation steps of switching the window body 5 to the top inward tilting state.

[0057] 2) By designing the first slider as the driving part 122 and making it move synchronously with the lock rod 12, the locking and unlocking actions are closely linked, which not only simplifies the operation steps, but also ensures that the movement of the first slider can be accurately triggered when the lock rod 12 slides, thereby efficiently starting the subsequent unlocking and window body 5 state switching process;

[0058] 3) By designing the first slider as the driving part 122 and making it move synchronously with the lock rod 12, the locking and unlocking actions are closely linked, which not only simplifies the operation steps, but also ensures that the movement of the first slider can be accurately triggered when the lock rod 12 slides, thereby efficiently starting the subsequent unlocking and window body 5 state switching process;

[0059] 4) By accurately designing the shape and arrangement order of the first and second sub-slots 3321 and 3322, the swing angle of the first and second connecting rods 31 and 32 can be accurately controlled, thereby meeting different use requirements; and the design of the V-shaped groove provides a larger contact area and swing space, so that the hinge mechanism can more flexibly adapt to different use scenarios and installation conditions

[0060] The technical means disclosed by the utility model scheme is not limited to the technical means disclosed by the above-mentioned embodiments, but also includes technical solutions 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. Hinge mechanism, characterized in that The utility model relates to a hinge structure, including: A pull rod assembly (1) comprising a connecting seat (11) and a lock rod (12), the lock rod (12) is arranged in the connecting seat (11) along the first direction, the lock rod (12) is equipped with first locking portion (121) and drive portion (122), A hinge (2) comprising a fixed leaf (21) and a movable leaf (22), the movable leaf (22) is rotatably arranged in the fixed leaf (21), A connecting rod assembly (3) comprising a first connecting rod (31), a second connecting rod (32) and a third connecting rod (33), one end of the first connecting rod (31) is hingedly connected to the connecting seat (11) and can slide relative to the connecting seat (11) along the first direction, the other end is connected to the movable leaf (22), the first connecting rod (31) is equipped with second locking portion (311), the second connecting rod (32) is hingedly connected to the connecting seat (11) and the first connecting rod (31) at both ends respectively, one end of the third connecting rod (33) is hingedly connected to the connecting seat (11), the other end is hingedly connected to the second connecting rod (32) and can slide along the second connecting rod (32), When the first locking portion (121) and the second locking portion (311) are locked, the pull rod assembly (1) and the connecting rod assembly (3) can swing synchronously relative to the fixed leaf (21), when the lock rod (12) slides to make the first locking portion (121) disengage from the second locking portion (311), the lock rod (12) can drive the drive portion (122) to drive the third connecting rod (33) to swing relative to the connecting seat (11) and the second connecting rod (32), under the drive of the third connecting rod (33), the first connecting rod (31) and the second connecting rod (32) can swing relative to the connecting seat (11).

2. The hinge mechanism of claim 1, wherein, The drive portion (122) is a first slider, the first slider moves synchronously with the lock rod (12), the third connecting rod (33) is equipped with a guide groove (331) and a transmission groove (332) connected thereto, When the first locking portion (121) and the second locking portion (311) are locked, the extension direction of the guide groove (331) is parallel to the first direction, the extension direction of the transmission groove (332) is inclined to the first direction, when the lock rod (12) slides to make the first locking portion (121) disengage from the second locking portion (311), under the drive of the lock rod (12), the first slider can slide from the guide groove (331) to the transmission groove (332) along the first direction, so that the first slider is in transmission connection with the transmission groove (332), the first slider continues to slide along the first direction to push the transmission groove (332), so that the third connecting rod (33) swings relative to the connecting seat (11) and the second connecting rod (32).

3. The hinge mechanism of claim 2, wherein, The connecting seat (11) is provided with a first sliding groove (111) extending along the first direction, and the first slider is slidingly connected in the first sliding groove (111).

4. The hinge mechanism of claim 2, wherein, The transmission groove (332) comprises a first sub-groove (3321) and a second sub-groove (3322), the first sub-groove (3321) is connected with the guide groove (331), and the second sub-groove (3322) is connected with the first sub-groove (3321) to form a V shape. When the first connecting rod (31) and the second connecting rod (32) swing relative to the connecting base (11), the connecting base (11) can move away from the fixed leaf (21) in a second direction. The second sub-groove (3322), the first sub-groove (3321) and the guide groove (331) are arranged in the first direction in sequence, and the first sub-groove (3321) is located in front of the guide groove (331) in the second direction.

5. The hinge mechanism of claim 4, wherein, An arc-shaped transition part (3323) is formed at the joint of the first sub-groove (3321) and the second sub-groove (3322).

6. The hinge mechanism of claim 1, wherein, The connecting base (11) is concave and provided with an avoiding groove (112), one end of the third connecting rod (33) is rotationally connected to the avoiding groove (112), and the first connecting rod (31), the second connecting rod (32) and the third connecting rod (33) are arranged in sequence from top to bottom.

7. The hinge mechanism of claim 1, wherein, The second connecting rod (32) is provided with a second sliding groove (321) extending in the length direction of the second connecting rod (32), one end of the third connecting rod (33) is provided with a second sliding block (333), the second sliding block (333) is slidingly connected to the second sliding groove (321), and the second sliding block (333) can rotate relative to the second sliding groove (321).

8. The hinge mechanism of claim 1, wherein, The connecting base (11) is provided with a third sliding groove (113) extending in the first direction, one end of the first connecting rod (31) is provided with a third sliding block (312), the third sliding block (312) is slidingly connected to the third sliding groove (113), and the third sliding block (312) can rotate relative to the third sliding groove (113).

9. The hinge mechanism of claim 1, wherein, One of the first locking part (121) and the second locking part (311) is a locking groove, and the other is a locking block.

10. An inwardly opening casement window characterised in that, The hinge mechanism comprises a handle (6), a window frame (4) and a window body (5), the fixed leaf (21) is fixedly connected to the window frame (4), the connecting base (11) is fixedly connected to the window body (5), the handle (6) is arranged on the window body (5) and is in transmission connection with the locking rod (12), and the handle (6) can control the sliding of the locking rod (12) relative to the connecting base (11).

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