Multi-linkage casement window

Abstract

The present invention relates to the technical field of doors and windows, and discloses a multi-linkage casement window, which comprises: a window frame; at least two opening sashes, all the opening sashes are arranged horizontally, all the opening sashes are rotatably connected to the window frame around the same horizontal axis, and a linkage structure is arranged between every two adjacent opening sashes; the linkage structure includes an outer linkage part and an inner linkage part, the outer linkage part is used for pushing the inner linkage part outwards, and the inner linkage part is used for pushing the outer linkage part inwards. All the outer linkage parts are arranged on the same side of all the opening sashes, and all the inner linkage parts are arranged on the other side of all the opening sashes. Compared with the prior art, the invention can realize the synchronous opening and synchronous closing of multiple opening sashes, effectively improve the efficiency of opening and closing the window, and can realize the closing and opening of a single opening sash to meet different requirements for opening and closing the window.

Description

Technical Field

[0001] The present invention relates to the technical field of doors and windows, and particularly to multi-linkage casement windows. Background Art

[0002] A casement window refers to a window that opens along a horizontal axis. According to the different positions of the hinges and rotating shafts, the casement window can be divided into an upper-hung window and a lower-hung window. The hinge of the upper-hung window is installed on the upper side of the window sash, and it opens outward to the outside of the window on the lower side of the casement window, with good rain-proof effect. The hinge of the lower-hung window is installed on the lower side of the window sash, and it opens inward to the inside of the window on the upper side of the casement window, with good ventilation effect but not rain-proof.

[0003] When the size of the window is large, for example, when applied in scenarios such as auditoriums and halls, in order to avoid setting the size of a single casement window too large, multiple casement windows need to be used in combination. In the prior art, the opening and closing of multiple casement windows are independent of each other. When users encounter typhoon weather, they need to close the casement windows one by one and open them one by one after the weather clears up, which is time-consuming and laborious and difficult to cope with emergencies. Summary of the Invention

[0004] The present invention aims to provide a multi-linkage casement window to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0005] The multi-linkage casement window according to the first aspect embodiment of the present invention, with the outside of the window being the outdoor space and the inside of the window being the indoor space, includes:

[0006] A window frame;

[0007] Opening sashes, the number of which is at least two. All the opening sashes are arranged horizontally, and all the opening sashes are rotatably connected to the window frame around the same horizontal axis. A linkage structure is provided between every two adjacent opening sashes; the linkage structure includes an outer linkage part and an inner linkage part. The outer linkage part is used to push the inner linkage part outward, and the inner linkage part is used to push the outer linkage part inward. All the outer linkage parts are arranged on the same side of all the opening sashes, and all the inner linkage parts are arranged on the other side of all the opening sashes.

[0008] The multi-linkage casement window according to the embodiments of the present invention has at least the following beneficial effects: Assuming that the number of opening sashes is three, the three opening sashes are gradually linked through a linkage structure. When the user pushes out the first-level opening sash outward, the outer linkage part of the first-level opening sash drives the inner linkage part of the second-level opening sash to move outward. At the same time, the outer linkage part of the second-level opening sash drives the inner linkage part of the third-level opening sash to move outward, so as to realize the synchronous opening of the three opening sashes; When the user pulls the third-level opening sash inward, the inner linkage part of the third-level opening sash drives the outer linkage part of the second-level opening sash to move inward. At the same time, the inner linkage part of the second-level opening sash drives the outer linkage part of the first-level opening sash to move inward, so as to realize the synchronous closing of the three opening sashes; In addition, when the user pushes out the third-level opening sash outward, since the inner linkage part of the third-level opening sash does not affect the outer linkage part of the second-level opening sash when moving outward, the third-level opening sash can be opened separately. Similarly, the first-level opening sash can also be closed separately to meet different window opening and closing requirements; Compared with the prior art, the present invention can realize the synchronous opening and synchronous closing of multiple opening sashes, effectively improve the window opening and closing efficiency, and can realize the closing and opening of a single opening sash to meet different window opening and closing requirements.

[0009] According to some embodiments of the present invention, the upper sides of all the opening sashes are rotatably connected to the window frame around the same horizontal axis. At this time, all the opening sashes together form an upper-hung window; Or, the lower sides of all the opening sashes are rotatably connected to the window frame around the same horizontal axis. At this time, all the opening sashes together form a lower-hung window.

[0010] According to some embodiments of the present invention, both the outer linkage part and the inner linkage part are steel-bonded rubber strips, and the outer linkage part and the inner linkage part respectively have a first hook and a second hook that are mutually engaged. The rigidity of the steel-bonded rubber strip can meet the technical requirements and play a role in vibration reduction. The mutually engaged first hook and second hook can ensure the effective connection between the outer linkage part and the inner linkage part and prevent dislocation.

[0011] According to some embodiments of the present invention, the multi-linkage casement window further includes an automatic lock module. The automatic lock module includes an elastic lock and a lock seat. An elastic lock is connected to the notch of each opening sash, and a lock seat is connected to the window frame at the corresponding position of each elastic lock. The moving path of the elastic lock passes through the corresponding lock seat. When closing the opening sash, once the elastic lock of the opening sash moves to the lock seat of the window frame, under the action of elastic force, the elastic lock will move out of the way and automatically lock with the lock seat, so as to save the operation of manually locking the window.

[0012] According to some embodiments of the present invention, the lock seat includes a fixed plate, a movable plate and an elastic part, the fixed plate is connected to the window frame, the movable plate is movably connected to the fixed plate along a first straight line, and the elastic part drives the movable plate to reset along a first direction of the first straight line. Through the above-mentioned settings, the movable plate of the lock seat also has elastic avoidance and elastic reset functions, providing technical support for subsequent unlocking.

[0013] According to some embodiments of the present invention, in order to achieve locking of the elastic lock, the movable plate is provided with two baffles, a locking channel parallel to the first straight line is formed between the two baffles, and the movable plate is provided with an abutment surface in the first direction of the locking channel.

[0014] According to some embodiments of the present invention, specifically, the elastic lock includes a mounting plate, a lock tongue and an elastic member, the lock tongue is movably connected to the mounting plate along a second straight line, and the elastic member drives the lock tongue to reset along a second direction of the second straight line.

[0015] According to some embodiments of the present invention, the movement path of the lock tongue passes through the corresponding locking channel, and the lock tongue has an inclined surface that avoids the baffle and a clamping surface that is clamped to the baffle. When the inclined surface of the lock tongue moves to abut against the baffle, under the joint action of the inclined surface and the elastic force, the lock tongue enters the locking channel through elastic avoidance. Once the lock tongue enters the locking channel, under the action of the elastic force, the lock tongue resets to the second direction, and the clamping surface of the lock tongue abuts against the baffle when the window is opened outwards. Since the clamping surface cannot elastically avoid the baffle, the position of the lock tongue is limited in the locking channel to achieve locking of the open window.

[0016] According to some embodiments of the present invention, the automatic locking module further includes a handle and a transmission bar. The number of the handle and the transmission bar is the same as that of the elastic locks. Each opening fan is connected to the handle, and each mounting plate is connected to one of the transmission bars. Each handle drives one of the transmission bars to move along the first straight line, so that the locking tongue has a moving path that crosses the locking channel along the first direction. The abutting surface is located on the moving path of the locking tongue. When it is necessary to unlock the opening fan, first rotate the handle to move the locking tongue across the locking channel in the first direction, and then reset the handle. When the locking tongue is reset, it moves in the opposite direction of the first direction (hereinafter referred to as the first reverse direction). Since the locking tongue will extend to the abutting surface of the movable plate under the action of elastic force after crossing the locking channel, when the locking tongue is reset, it can apply a force in the first reverse direction to the movable plate through the abutting surface to overcome the elastic force of the movable plate and push the movable plate in the first reverse direction. At this time, the movement of the locking tongue is no longer restricted, so the opening fan can be normally opened. Once the locking tongue leaves the movable plate, the movable plate is reset in the first direction under the action of elastic force, waiting for the next automatic window locking action.

[0017] According to some embodiments of the present invention, the automatic locking module further includes a handle and a transmission bar. The number of the transmission bars is the same as that of the elastic locks. The handle is connected to the opening fan at any one end, and each mounting plate is connected to one of the transmission bars; the first straight line is arranged horizontally, and all the transmission bars are connected together along the first straight line by magnetic force. The handle drives one of the transmission bars to move along the first straight line, so that the locking tongue has a moving path that crosses the locking channel along the first direction. The abutting surface is located on the moving path of the locking tongue. In order to reduce the operation, the number of handles is set to one, and all the transmission bars are driven to move synchronously by one handle. Since the magnetic force is a non-rigid force, the transmission bars connected to each other by magnetic force will not hinder the individual opening of the opening fan.

[0018] According to some embodiments of the present invention, the handle is connected to the opening fan located at the most downstream in the first direction. Since the transmission bar needs to overcome the elastic force of the elastic part of the lock seat when being reset, when the handle is connected to the opening fan located at the most downstream in the first direction, the other transmission bars are driven by thrust when being reset, and the thrust is much more reliable than the magnetic force, which can ensure the normal reset of all the transmission bars.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, in which:

[0021] Figure 1 is a schematic structural view of a multi-linkage casement window provided by an embodiment of the present invention from the indoor side towards the outdoor side;

[0022] Figure 2 is a cross-sectional view of a multi-linkage casement window provided by an embodiment of the present invention;

[0023] Figure 3 is a schematic structural view of a linkage structure provided by an embodiment of the present invention;

[0024] Figure 4 is a schematic structural view of a lock base provided by an embodiment of the present invention;

[0025] Figure 5 is a schematic structural view of an elastic lock provided by an embodiment of the present invention;

[0026] Figure 6 is a schematic structural view of the elastic lock and the lock base in a locked state provided by an embodiment of the present invention;

[0027] Figure 7 is a schematic structural view of the elastic lock and the lock base in an unlocked state provided by an embodiment of the present invention;

[0028] Figure 8 is a schematic structural view of the elastic lock and the lock base in a reset state provided by an embodiment of the present invention.

[0029] In the drawings: 100 - window frame, 200 - opening sash, 110 - mullion, 120 - sealing strip, 300 - linkage structure, 310 - outer linkage part, 320 - inner linkage part, 311 - first hook, 321 - second hook, 330 - steel sheet, 210 - first-stage opening sash, 220 - second-stage opening sash, 230 - third-stage opening sash, 40 - automatic lock module, 500 - elastic lock, 400 - lock base, 410 - fixing plate, 420 - backing plate, 430 - movable plate, 440 - elastic part, 411 - first wing plate, 412 - first recess, 413 - mounting hole, 414 - chute, 421 - first mounting post, 415 - second mounting post, 431 - baffle, 432 - locking channel, 433 - abutting surface, 510 - mounting plate, 520 - bottom case, 530 - lock tongue, 540 - elastic member, 511 - second wing plate, 512 - lock hole, 513 - second recess, 514 - connection hole, 531 - inclined surface, 532 - clamping surface, 600 - handle, 610 - transmission bar, 700 - grip. Detailed Embodiments

[0030] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0031] In the description of the present invention, it should be understood that with respect to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is 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 orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0032] In the description of the present invention, the meaning of several is one or more, the meaning of a plurality is more than two, greater than, less than, exceeding, etc. are understood as not including the recited number, and above, below, within, etc. are understood as including the recited number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present invention in combination with the specific content of the technical solution.

[0034] As Figure 1 and Figure 2 shown, the multi-linkage casement window according to the embodiment of the first aspect of the present invention includes a window frame 100 and a plurality of opening sashes 200. Taking the case where there are three opening sashes 200 as an example, the size of the window frame 100 can accommodate all the opening sashes 200, and the window frame 100 is provided with two vertical mullions 110. The three opening sashes 200 are arranged horizontally, and the installation positions of the two mullions 110 should match the widths of the opening sashes 200, and three opening sashes 200 are movably installed thereon. If this technology is applied to an upper-hung window, then the upper sides of all the opening sashes 200 are rotatably connected to the window frame 100 around the same horizontal axis, and at this time all the opening sashes 200 together form an upper-hung window; if this technology is applied to a lower-hung window, then the lower sides of all the opening sashes 200 are rotatably connected to the window frame 100 around the same horizontal axis, and at this time all the opening sashes 200 together form a lower-hung window. For the convenience of description, the following is a detailed description based on the upper-hung window.

[0035] In this embodiment, the outer side of the window is taken as the outdoor space, i.e., the outer direction, the inner side of the window is taken as the indoor space, i.e., the inner direction, the height of the casement window is taken as the up-down direction, and the width of the casement window is taken as the left-right direction.

[0036] The window frame 100 of the present invention is not a window enclosing structure, and all three opening sashes 200 are kept on the outer side of the window frame 100. When the opening sashes 200 are closed, the opening sashes 200 overlap on the outer side of the window frame 100, and are sealed with the window frame 100 through a sealing strip 120 to meet the requirements of waterproofing and windproofing. Since all three opening sashes 200 are kept on the outer side of the window frame 100, there is no limitation by the mullion 110 between two adjacent opening sashes 200.

[0037] As Figure 2 and Figure 3 shown, a linkage structure 300 is provided between every two adjacent opening sashes 200. The linkage structure 300 includes an outer linkage part 310 and an inner linkage part 320. The outer linkage part 310 and the inner linkage part 320 respectively have a first hook 311 and a second hook 321 that are engaged with each other. The first hook 311 faces outward of the window, and the second hook 321 faces inward of the window, so that the outer linkage part 310 can push the inner linkage part 320 outward, and the inner linkage part 320 can push the outer linkage part 310 inward. Moreover, all the outer linkage parts 310 are arranged on the same side of all the opening sashes 200, and all the inner linkage parts 320 are arranged on the other side of all the opening sashes 200. For example, when all the outer linkage parts 310 are connected to the left slots of all the opening sashes 200, all the inner linkage parts 320 are connected to the right slots of all the opening sashes 200 to achieve the step-by-step linkage of the three opening sashes 200.

[0038] Specifically, both the outer linkage part 310 and the inner linkage part 320 can be selected as steel-reinforced rubber strips. The outer side of the rubber strip is made of ethylene propylene diene monomer (EPDM) rubber, and a steel sheet 330 is installed in the middle core part to integrate the steel sheet 330 with the rubber strip, increasing the hardness, bending resistance and service life of the rubber strip. The rigidity of the steel-reinforced rubber strip can meet the structural strength and play a role in vibration reduction, reducing the noise generated by collision. The mutually engaged first hook 311 and second hook 321 can ensure the effective connection between the outer linkage part 310 and the inner linkage part 320 and prevent dislocation.

[0039] For the convenience of description, in this embodiment, the three opening fans 200 are respectively defined as the first-stage opening fan 210, the second-stage opening fan 220, and the third-stage opening fan 230. Among them, the first-stage opening fan 210 is only provided with an external linkage part 310, the third-stage opening fan 230 is only provided with an internal linkage part 320, and the two sides of the second-stage opening fan 220 are respectively provided with an internal linkage part 320 and an external linkage part 310. When the user pushes the first-stage opening fan 210 outwards, the external linkage part 310 of the first-stage opening fan 210 drives the internal linkage part 320 of the second-stage opening fan 220 to move outwards. At the same time, the external linkage part 310 of the second-stage opening fan 220 drives the internal linkage part 320 of the third-stage opening fan 230 to move outwards, so as to realize the synchronous opening of the three opening fans 200. When the user pulls the third-stage opening fan 230 inwards, the internal linkage part 320 of the third-stage opening fan 230 drives the external linkage part 310 of the second-stage opening fan 220 to move inwards. At the same time, the internal linkage part 320 of the second-stage opening fan 220 drives the external linkage part 310 of the first-stage opening fan 210 to move inwards, so as to realize the synchronous closing of the three opening fans 200.

[0040] Since the opening amplitude of the casement window is fixed, generally 30°, there is no such situation that the opening amplitude of the first-stage opening fan 210 is 30°, the opening amplitude of the second-stage opening fan 220 is 20°, and the opening amplitude of the third-stage opening fan 230 is 15°, etc. That is, the casement window is either in the open state or in the closed state. The present invention can realize the synchronous opening and synchronous closing of multiple opening fans 200, effectively improving the efficiency of opening and closing the window. When encountering strong convective weather, all the opening fans 200 can be quickly closed, and then quickly opened after the weather clears up.

[0041] In addition, when the user pushes the third-stage opening fan 230 outwards, since the internal linkage part 320 of the third-stage opening fan 230 does not affect the external linkage part 310 of the second-stage opening fan 220 when moving outwards, the third-stage opening fan 230 can be opened independently. Similarly, when the user pulls the first-stage opening fan 210 inwards, since the external linkage part 310 of the first-stage opening fan 210 does not affect the internal linkage part 320 of the second-stage opening fan 220 when moving inwards, the first-stage opening fan 210 can be closed independently to meet different requirements for opening and closing the window.

[0042] If all the opening fans 200 are in the closed state, when the user only wants to open one of the three opening fans 200, the best option is to directly open the third-level opening fan 230. When the user only wants to open two of the three opening fans 200, the best option is to directly open the second-level opening fan 220, which will drive the third-level opening fan 230 to open synchronously when the second-level opening fan 220 is opened; the second best option is to directly open the first-level opening fan 210, which will drive the second-level opening fan 220 and the third-level opening fan 230 to open synchronously when the first-level opening fan 210 is opened, and then close the first-level opening fan 210 alone.

[0043] If all the opening fans 200 are in the open state, when the user only wants to close one of the three opening fans 200, the best option is to directly close the first-stage opening fan 210. When the user only wants to close two of the three opening fans 200, the best option is to directly close the second-stage opening fan 220, which will drive the first-stage opening fan 210 to open synchronously when the second-stage opening fan 220 is closed; the second best option is to directly close the third-stage opening fan 230, which will drive the second-stage opening fan 220 and the first-stage opening fan 210 to close synchronously when the third-stage opening fan 230 is closed, and then open the third-stage opening fan 230 alone.

[0044] Since it is difficult to distinguish the first-stage opening sash 210, the second-stage opening sash 220 and the third-stage opening sash 230 of the multi-linked hanging window in appearance, it is best to affix corresponding labels and corresponding operation instructions on the surface of the corresponding opening sash 200. For example, a "synchronous window opening" label is affixed on the surface of the first-stage opening sash 210 to remind the user that the synchronous window opening can be achieved by opening the opening sash 200; for example, a "synchronous window closing" label is affixed on the surface of the third-stage opening sash 230 to remind the user that the synchronous window closing can be achieved by closing the opening sash 200.

[0045] When encountering strong winds, the high-pressure airflow may blow the opening fan 200 from the open state to the closed state, and cause the opening fan 200 to generate high-frequency vibration under the continuous wind pressure, which in turn damages the hardware of the opening fan 200, and in severe cases, causes the opening fan 200 to fall off. In order to overcome the above technical problems, it is necessary to introduce an automatic locking module 40 in the multi-linked hanging window. When the opening fan 200 enters the closed state from the open state, the automatic locking module 40 is activated, so that the opening fan 200 remains in the closed state, so as to avoid the opening fan 200 from generating high-frequency vibration between the open state and the closed state, and lock the opening fan 200 to meet the requirements of windproof and waterproof.

[0046] like Figure 4 and Figure 5As shown, specifically, the automatic lock module 40 includes an elastic lock 500 and a lock base 400. An elastic lock 500 is connected to the notch of each opening fan 200, and a lock base 400 is connected to the corresponding position of each elastic lock 500 on the window frame 100. The lock base 400 includes a fixing plate 410, a backing plate 420, a movable plate 430, and an elastic part 440. First wing plates 411 are provided on both sides of the fixing plate 410. The middle part of the fixing plate 410 protrudes towards the front, thereby forming a first concave position 412 on the back of the fixing plate 410. Mounting holes 413 are provided on both first wing plates 411. The fixing plate 410 is fixedly connected to the notch of the window frame 100 through screws and the mounting holes 413. A chute 414 is provided in the middle of the fixing plate 410 along its length direction. In this embodiment, the setting direction of the chute 414 is defined as the first straight line. The movable plate 430 and the backing plate 420 are respectively located on the front and back sides of the chute 414. The backing plate 420 is received in the first concave position 412. The movable plate 430 and the backing plate 420 are connected by a connecting member. The connecting member passes through the chute 414 and slides along the chute 414. The backing plate 420 is provided with two first mounting posts 421. The fixing plate 410 is provided with two second mounting posts 415 on the side facing the backing plate 420, that is, two second mounting posts 415 are provided on the back of the fixing plate 410. Two elastic parts 440 are provided and can be selected as tension springs. The two ends of each tension spring are respectively connected to the first mounting post 421 and the second mounting post 415, so that the backing plate 420 together with the movable plate 430 can elastically move along the first straight line. At this time, the tension spring can drive the movable plate 430 to reset along the first direction of the first straight line.

[0047] To lock the elastic lock 500, the movable plate 430 is provided with two baffles 431. A locking channel 432 parallel to the first straight line is formed between the two baffles 431. The movable plate 430 is provided with an abutting surface 433 in the first direction of the locking channel 432. Correspondingly, the elastic lock 500 includes a mounting plate 510, a bottom shell 520, a lock tongue 530, and an elastic member 540. Second wing plates 511 are provided on both sides of the mounting plate 510. The middle part of the mounting plate 510 protrudes towards the front and is provided with a lock hole 512, thereby forming a second concave position 513 on the back of the mounting plate 510. Connecting holes 514 are provided on both second wing plates 511. The mounting plate 510 is fixedly connected to the notch of the opening fan 200 through screws and the connecting holes 514. The bottom shell 520 is located in the second concave position 513. The bottom shell 520 is connected to the mounting plate 510 through a connecting member. An elastic member 540 and a lock tongue 530 are provided in the bottom shell 520. The elastic member 540 can be selected as a compression spring. The lock tongue 530 extends and retracts through the lock hole 512 under the elastic force of the compression spring and moves in a straight line direction. In this embodiment, the extending and retracting direction of the lock tongue 530 is defined as the second straight line. At this time, the compression spring can drive the lock tongue 530 to reset along the second direction of the second straight line.

[0048] For ease of description, this embodiment defines the opposite direction of the first direction as the first opposite direction, and defines the opposite direction of the second direction as the second opposite direction. It should be noted that the first straight line and the second straight line are straight lines in different directions, and can be set at any angle except that they cannot be set in parallel.

[0049] Furthermore, the movement path of the lock tongue 530 passes through the corresponding locking channel 432. One side of the lock tongue 530 has an inclined surface 531 that avoids the baffle 431, and the other side of the lock tongue 530 has a clamping surface 532 that is clamped to the baffle 431. When the inclined surface 531 of the lock tongue 530 moves to abut against the baffle 431, under the joint action of the inclined surface 531 and the compression spring, the lock tongue 530 enters the locking channel 432 by elastic avoidance. Once the lock tongue 530 enters the locking channel 432, under the elastic force of the compression spring, the lock tongue 530 resets to the second direction. At this time, the clamping surface 532 of the lock tongue 530 will be clamped to the baffle 431 when the window is opened outwards. Since the clamping surface 532 cannot be elastically evaded with the baffle 431, the position of the lock tongue 530 is limited in the locking channel 432 to achieve the locking of the opening fan 200.

[0050] When the user or strong wind switches the opening fan 200 from the open state to the closed state, the opening fan 200 drives the lock tongue 530 to move toward the baffle 431 during the closing process. The lock tongue 530 retracts in the second reverse direction under the joint action of the inclined surface 531 and the compression spring, causing the lock tongue 530 to pass over the baffle 431 and enter the locking channel 432. Once the lock tongue 530 enters the locking channel 432, under the elastic force of the compression spring, the lock tongue 530 is reset to the second direction. At this time, the locking surface 532 of the lock tongue 530 will be locked to the baffle 431 when the window is opened outward, causing the opening fan 200 to be unable to be opened outward and in a locked state. That is, once the opening fan 200 is closed, the elastic lock 500 and the lock seat 400 are automatically locked to save the operation of manually locking the window. At this time, the opening fan 200 cannot be opened outward without applying external force.

[0051] In order to be able to open the opening sash 200 in the locked state, the automatic lock module 40 further includes a handle 600 and a transmission bar 610. In this embodiment, the first straight line is arranged in the up-and-down direction. At this time, the first straight lines of all the opening sashes 200 cannot be connected in a straight line. Therefore, the number of handles 600 and transmission bars 610 is the same as the number of elastic locks 500, and all three are three. The three handles 600 are connected to the corresponding opening sashes 200 through their respective connectors. Each mounting plate 510 is fixedly connected to a transmission bar 610 located at the notch through screws and connection holes 514. The three handles 600 are respectively in transmission connection with the three transmission bars 610. Each handle 600 drives the corresponding transmission bar 610 to move along the first straight line, so that the lock tongue 530 has a moving path that crosses the locking channel 432 along the first direction. At this time, the abutting surface 433 is located on the moving path of the lock tongue 530.

[0052] When it is necessary to unlock the opening sash 200, at this time, the elastic lock 500 and the lock base 400 are in the locked state as shown in Figure 6 As shown. First, rotate the handle 600 to make the lock tongue 530 cross the locking channel 432 in the first direction. After the lock tongue 530 crosses the locking channel 432, it will extend to the abutting surface 433 of the movable plate 430 under the elastic force of the compression spring. At this time, the elastic lock 500 and the lock base 400 are in the unlocked state as shown in Figure 7 As shown. Then, reset the handle 600. When the lock tongue 530 is reset, it moves in the first reverse direction. During the reset process of the lock tongue 530, it can apply a force in the first reverse direction to the movable plate 430 through the abutting surface 433 to overcome the elastic force of the tension spring and push the movable plate 430 in the first reverse direction. At this time, the elastic lock 500 and the lock base 400 are in the reset state as shown in Figure 8 As shown. The movement of the lock tongue 530 is no longer restricted, so the opening sash 200 can be normally opened. Once the lock tongue 530 leaves the movable plate 430, the movable plate 430 is reset in the first direction under the elastic force of the tension spring, waiting for the next automatic window locking action.

[0053] It should be noted that since the three transmission bars 610 cannot be connected in a straight line, three handles 600 need to be set to respectively control the relative positions of the three transmission bars 610. That is to say, before opening the window, it is necessary to manipulate the three handles 600 to respectively unlock the three opening sashes 200. Of course, after rotating the handle 600, the handle 600 can also be reset after opening the opening sash 200. The ultimate result is to ensure that the moving path of the lock tongue 530 can pass through the corresponding locking channel 432.

[0054] As Figure 1As shown, in order to further simplify the operation, in some other embodiments, the first straight line is arranged in the left - right direction. At this time, the first straight lines of all the opening fans 200 can be connected in a straight line. Therefore, the number of the transmission bars 610 is the same as the number of the elastic locks 500, both being three. However, only one handle 600 needs to be provided. The handle 600 is connected to the opening fan 200 at any one end through a connecting member. Each mounting plate 510 is fixedly connected to a transmission bar 610 located at the notch through screws and connecting holes 514. The handle 600 is in transmission connection with one transmission bar 610. All the transmission bars 610 are connected together along the first straight line by magnetic force. The handle 600 drives all the transmission bars 610 to move along the first straight line, so that the locking tongue 530 has a moving path to cross the locking channel 432 along the first direction. At this time, the abutting surface 433 is located on the moving path of the locking tongue 530.

[0055] Specifically, all the transmission bars 610 can be selected as magnetic members, or a magnetic part (not shown in the drawings) is connected to the end of each transmission bar 610 to realize the magnetic connection of all the transmission bars 610. When all the opening fans 200 are in the same position, such as opening windows or closing windows simultaneously, at this time, all the transmission bars 610 are arranged in a straight line and connected by magnetic force. Since the magnetic force is a non - rigid force, the transmission bars 610 connected to each other by magnetic force will not prevent the individual opening of the opening fan 200.

[0056] It can be understood that along the first direction, the first direction points from the upstream position to the downstream position. That is to say, the first direction points from right to left. In the present invention, there are two setting positions for the handle 600. The handle 600 can be connected to the opening fan 200 at the most upstream position in the first direction. At this time, the user rotates the handle 600 to drive the corresponding transmission bar 610 to move along the first direction, and the other transmission bars 610 move in the first direction under the action of the thrust. When the handle 600 is reset, it drives the corresponding transmission bar 610 to move along the first reverse direction, and the other transmission bars 610 move in the first reverse direction under the action of the magnetic force. On the other hand, the handle 600 can also be connected to the opening fan 200 at the most downstream position in the first direction. At this time, the user rotates the handle 600 to drive the corresponding transmission bar 610 to move along the first direction, and the other transmission bars 610 move in the first direction under the action of the magnetic force. When the handle 600 is reset, it drives the corresponding transmission bar 610 to move along the first reverse direction, and the other transmission bars 610 move in the first reverse direction under the action of the thrust.

[0057] If the handle 600 is connected to the opening sash 200 located at the uppermost upstream in the first direction, since the transmission bars 610 are magnetically connected when resetting, the magnetic force at this time needs to overcome the elastic force of the tension spring. Therefore, in order to make the magnetic connection of all the transmission bars 610 more firm and avoid disconnecting the connection between the transmission bars 610 due to insufficient magnetic force during resetting, strong magnets are connected to the connection ends of adjacent two transmission bars 610. Neodymium iron boron magnets can be selected. The size of the strong magnet is larger than that of the transmission bar 610. The opening sash 200 is provided with a clearance position that clears the strong magnet. In addition to using strong magnets in this embodiment, the size of the strong magnet is also increased, and a clearance position is set to prevent interference.

[0058] If the handle 600 is connected to the opening sash 200 located at the lowermost downstream in the first direction, since the transmission bars 610 are magnetically connected when moving in the first direction, the magnetic force at this time does not need to overcome the elastic force of the tension spring. Therefore, the magnetic force does not need to be set very large to meet the working conditions. On the other hand, when the other transmission bars 610 are reset, they are driven by a thrust force, and the thrust force is much more reliable than the magnetic force and there is no disconnection situation, which can ensure the normal reset of all the transmission bars 610. Therefore, compared with the previous embodiment, this embodiment can meet the working conditions without setting strong magnets and is more reliable. To sum up, it is preferred to connect the handle 600 to the opening sash 200 located at the lowermost downstream in the first direction, that is, the setting as Figure 1 shown.

[0059] It should be further noted that for the embodiment using only one handle 600, after rotating the handle 600, the handle 600 can also be reset after opening the opening sash 200. However, since some of the transmission bars 610 are simultaneously arranged in the slots of two opening sashes 200 at this time, the operation cannot achieve the separate opening of the opening sash 200, otherwise it will cause deformation or fracture of the transmission bars 610. In addition, for the embodiment using three handles 600, the first straight line can also be arranged in the left - right direction. At this time, all the transmission bars 610 are not connected in a straight line but are arranged at intervals along a straight line. Each transmission bar 610 is controlled by the corresponding handle 600. This setting can not only achieve the synchronous window opening of all the opening sashes 200, but also achieve the separate opening of the opening sashes 200.

[0060] In some embodiments of the present invention, in order to facilitate the control of the opening sash 200, for the opening sash 200 with a handle 600, at this time, the handle 600 can be used as the force application point for opening and closing the window. For the opening sash 200 without a handle 600, a handle 700 still needs to be connected as the force application point for opening and closing the window. Of course, the opening sash 200 can also have both a handle 600 and a handle 700, and is not limited to the above - mentioned embodiments.

[0061] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A multi-linkage casement window, with the outside of the window being the outdoor space and the inside of the window being the indoor space, characterized in that, Comprising: Window frame; Opening sashes, the number of which is three or more, all opening sashes are arranged horizontally, all opening sashes are rotatably connected to the window frame around the same horizontal axis, and a linkage structure is provided between every two adjacent opening sashes; the linkage structure includes an outer linkage part and an inner linkage part, the outer linkage part is used to push the inner linkage part outwards, and the inner linkage part is used to push the outer linkage part inwards, all outer linkage parts are arranged on the same side of all opening sashes, and all inner linkage parts are arranged on the other side of all opening sashes; Automatic lock module, which includes an elastic lock, a lock seat, a handle and a transmission bar, the notch of each opening sash is connected with the elastic lock, the window frame is connected with the lock seat at the corresponding position of each elastic lock, and the moving path of the elastic lock passes through the corresponding lock seat; Wherein, The lock seat includes a fixing plate, a movable plate and an elastic part, the fixing plate is connected to the window frame, the movable plate is movably connected to the fixing plate along a first straight line, and the elastic part drives the movable plate to reset along the first direction of the first straight line; two baffles are provided on the movable plate, and a locking channel parallel to the first straight line is formed between the two baffles, and an abutting surface is provided on the movable plate in the first direction of the locking channel; The elastic lock includes a mounting plate, a lock tongue and an elastic member, the lock tongue is movably connected to the mounting plate along a second straight line, and the elastic member drives the lock tongue to reset along the second direction of the second straight line; the moving path of the lock tongue passes through the corresponding locking channel, and the lock tongue respectively has an inclined surface avoiding the baffle and a clamping surface clamping the baffle; The number of the transmission bars is the same as the number of the elastic locks, the handle is connected to the opening sash located at the most downstream in the first direction, and each mounting plate is connected to a transmission bar; the first straight line is arranged horizontally, all transmission bars are connected together along the first straight line by magnetic force, the handle drives a transmission bar to move along the first straight line, so that the lock tongue has a moving path crossing the locking channel along the first direction, and the abutting surface is located on the moving path of the lock tongue.

2. The multi-linkage casement window according to claim 1, wherein: The upper sides of all opening sashes are rotatably connected to the window frame around the same horizontal axis; or, The lower sides of all opening sashes are rotatably connected to the window frame around the same horizontal axis.

3. The multi-linkage casement window according to claim 1, characterized in that: Both the outer linkage part and the inner linkage part are steel-clad rubber strips, and the outer linkage part and the inner linkage part respectively have a first hook and a second hook that are mutually clamped.

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