Chain window opener with clutch control

Abstract

The present application relates to a chain type window opener with clutch control device, the chain type window opener makes the clutch groove of the driving gear pushed by the spring and the clutch block of the driven gear abut, so that the driving gear and the driven gear keep linkage in normal state, in normal state, the linkage window opener is opened and closed by the motor in the window opener, when manual opening and closing of the window sash is needed, press the control button, push the clutch plate down, push the driving gear away from the driven gear to release the linkage and maintain the current state, at this time the motor will not be loaded, the window sash can be conveniently opened and closed, convenient for emergency escape, through safety, and keep the clutch state by pressing the locking mechanism, improve the use experience, and set the anti-bending mechanism on the chain, set the chain head assembly to ensure that the chain will not be bent when supporting the window sash, improve the wind resistance and bending resistance, adjust the lifting height of the force applying plate, so that it can always maintain the strength of the chain, improve the adaptability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of window opener, in particular to a chain type window opener with clutch control device. BACKGROUND

[0002] With the development of society, residents' requirements for the quality of home environment are getting higher and higher. As part of home automation, window openers are widely used for ventilation and air exchange in indoor space. There are many types of window openers at present, and chain type window opener is a particularly practical one. It has a very compact structure, and when operating, the chain can be bent and retracted into the small window opener, or it can be stretched out to support the window sash vertically. The appearance is symmetrical and coordinated with the window body, greatly improving the visual effect of the entire window.

[0003] The existing invention patent with application number CN202221814538.2 discloses a chain type window opener chain anti-bending device, which comprises a bracket, a chain mounting head, a chain, the bracket is connected with the chain mounting head, further comprising a force plate arranged in the chain mounting head, the force plate is hinged with the top of the chain, the force plate is provided with a force surface abutting against the straight side of the chain, one end of the force plate close to the force surface is provided with a rotating shaft allowing it to rotate with the chain extension and contraction, the force plate is hinged with the chain mounting head through the rotating shaft, the beneficial effects of the present application are: improving the load bearing effect of the chain, increasing the applicable stroke of the window opener, and facilitating the application and installation of the window opener.

[0004] The chain bending prevention device in the above technical solution has the following defects in actual use: 1. The existing chain type window opener drives the door and window components to open and close through electricity. When power failure or the motor of the window opener is damaged, the door and window components can also be manually rotated to open and close the window. However, when manually opening and closing the window opener, the manual load is large when the door and window components move, and the manual opening and closing is very inconvenient, especially when using a motor with large load. If a fire occurs, the power is cut off or the motor is damaged, and the door and window connected to the window opener cannot be easily opened, which hinders the user's quick escape. 2. The support is provided with a limiting pin shaft matched with the limiting hook, so that the chain can be tightened. However, due to different installation environments and different lengths of chains used on different window sashes, the installation position of the window sash will be different, which requires the factory to manufacture corresponding length of window openers according to the model, thereby increasing the company's inventory pressure and making the installation angle of the installation worker too limited during installation, making the installation process too complicated. 3. The chain used in the window opener is divided into large chain and small chain. Generally, large chain is commonly used because it has large wind resistance and can be applied to general casement windows and other light windows. However, when used on roof skylights, the chain is often bent and deformed due to the weight of the window sash and double-layer glass, affecting the appearance. In high-rise environment, the chain will swing greatly when the wind speed is too fast, causing the chain to bend and fail, affecting the service life of the window opener. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a chain type window opener with a clutch control device to solve the above problems of the prior art.

[0006] In order to achieve the above object, the application provides the following technical scheme: a chain type window opener with clutch control device, comprising a box body, a motor arranged in the box body, a chain and a chain drive assembly for driving the chain to extend or retract in the box body, the chain drive assembly comprises a sprocket engaged with the chain and a gear transmission assembly arranged between the motor and the sprocket, the motor drives the sprocket to rotate through the gear transmission assembly, characterized in that: the box body is provided with a gear clutch mechanism at one end corresponding to the motor, the gear clutch mechanism comprises a driving gear arranged in the box body in the axial direction, a driven gear and a clutch plate arranged on the driving gear, the driving gear is linked with the output end of the motor, the driven gear is linked with the gear transmission assembly, the driving gear is provided with a clutch groove or a clutch block for accommodating the driven gear and linkage, the driven gear is provided with a clutch block or a clutch groove matched with the clutch groove or the clutch block, the center of the driven gear is provided with a central shaft which passes through the driving gear and rotates in the circumferential direction in the box body, the end of the driving gear away from the driven gear is provided with an elastic member for abutting the driving gear and the driven gear, one end of the clutch plate is formed as a control button extending out of the box body, the other end abuts the surface of the driving gear, the driving gear and the driven gear are linked or separated by pressing the control button.

[0007] By the above scheme, the motor is linked with the driving gear, the gear transmission assembly is linked with the driven gear, and the elastic member pushes the clutch groove of the driving gear and the clutch block of the driven gear to abut, so that the driving gear and the driven gear are linked in normal state, in the normal state, the driving gear is engaged with the driven gear, when the motor of the window opener works, the chain is pushed out or retracted in the box body by the linkage of the gear transmission assembly to realize electric opening and closing, when manual opening and closing of the window sash is needed, the control button outside the box body is pressed to push the clutch plate downward and push the driving gear away from the driven gear to separate the linkage, at this time, the window sash motor is not subjected to load, the window sash can be conveniently opened and closed to drive the chain to extend or retract, which is convenient for escape in emergency and improves safety.

[0008] The chain type window opener with clutch control device can be further provided with: the box body is provided with a clutch control device at one end corresponding to the clutch plate, the clutch control device comprises a clutch control frame arranged at one side of the clutch plate corresponding to the box body, a clutch switching groove arranged at the clutch control frame and a limiting hook arranged on the clutch plate and moving axially with the clutch plate, one end of the limiting hook is connected with the clutch plate, the other end is arranged in the clutch switching groove, one end of the clutch switching groove close to the control button is provided with a first limiting part for keeping the driving gear and the driven gear in linkage state, the other end away from the control button is provided with a second limiting part for keeping the driving gear and the driven gear in separation state, the limiting hook slides in the clutch switching groove and switches between the first limiting part and the second limiting part with the movement of the clutch plate.

[0009] The scheme is adopted, the clutch control frame is arranged on one side of the clutch plate, the linkage state between the driving gear and the driven gear is conveniently switched through the press locking mechanism between the clutch control frame and the clutch plate, and the linkage state can be kept for a long time, so that the window sash needs not to be pressed by one hand when the window sash is opened or closed, the operation difficulty is reduced, and the stability and convenience are improved, the limiting hook is arranged on the clutch plate and is lifted up and down along with the clutch plate, one end of the limiting hook is arranged in the clutch switching groove, the first limiting part and the second limiting part for keeping the driving gear and the driven gear in different clutch states are arranged in the clutch switching groove, the clutch state is stably switched by repeatedly pressing the control button, and the state can be stably kept without artificial pressing, and the use is more convenient.

[0010] The chain type window opener with the clutch control device can be further provided with a first sliding groove arranged on the clutch switching groove and guiding the limiting hook to move from the first limiting part to the second limiting part, a second sliding groove arranged in the clutch switching groove and guiding the limiting hook to move from the second limiting part to the first limiting part, the second limiting part arranged between the first sliding groove and the second sliding groove, a first check surface arranged between the second sliding groove and the first limiting part, the first check surface gradually increasing from the second sliding groove to the first limiting part, and the first check surface used for guiding the limiting hook to enter the first limiting part from the second sliding groove and preventing the limiting hook from directly entering the second sliding groove from the first limiting part.

[0011] The first check surface is arranged, so that the limiting hook is not arranged in the second sliding groove when the limiting hook is pressed in the first limiting part, and the clutch adjustment is not failed, and the first sliding groove and the second sliding groove are arranged, so that the limiting hook is stably guided, and the clutch state is conveniently and accurately switched.

[0012] The chain type window opener with the clutch control device can be further provided with the first limiting part gradually inclined downward to the second limiting part to form the first sliding groove, a stop part arranged between the first sliding groove and the second sliding groove and protruding to the first limiting part, the stop part used for preventing the limiting hook from directly entering the second sliding groove from the first sliding groove, the second limiting part arranged above the stop part and in a groove type structure, the second limiting part provided with a second check surface, the second check surface gradually increasing from the first sliding groove to the second sliding groove, the second check surface used for guiding the limiting hook to enter the second sliding groove from the first sliding groove and preventing the limiting hook from returning to the first sliding groove from the second sliding groove, a clutch guide groove arranged on the clutch control frame, the clutch plate in an arc shape, a T-shaped sliding block arranged on the clutch plate and facing the clutch guide groove, and the T-shaped sliding block connected with the limiting hook after passing through the clutch guide groove.

[0013] The above scheme is adopted, when the clutch is needed, only need to press the control button, the limit hook will be lowered along the first slide into the second limit part below, and with the setting of the stop part, it can be ensured that the limit hook will not directly enter the second slide, avoiding invalid clutch, and the second limit part is set above the stop part, and is a groove type structure, so that the two ends of the second limit part can cover the stop part, so that it can stably enter the second limit part, improve the stability of the clutch mechanism, by setting the second check surface, the limit hook is slid in the second check surface to the side close to the second slide, when pressed, it can be ensured that the limit hook can stably move from the second limit part to the first limit part, improve the stability of the clutch mechanism, the setting of the T-shaped sliding block makes the clutch plate not deviate left and right, front and back during lifting, and is stably positioned and guided, improving the stability of the clutch mechanism.

[0014] The chain type window opener with clutch control device can be further provided with: the output end of the motor is provided with a worm meshing with the driving gear, the elastic member is a spring, the spring is sleeved on the outer circumferential surface of the center shaft, the box body is provided with a spring accommodating cavity for mounting the spring, one end of the spring abuts against the spring accommodating cavity, and the other end abuts against the driving gear, the box body is provided with a worm mounting seat for positioning and rotating the worm corresponding to the worm, and the worm mounting seat and the box body have a clutch protrusion therebetween.

[0015] The above scheme is adopted, the output end of the motor is provided with a worm, the worm is directly meshed with the driving gear for transmission, the volume of the box body is reduced, the electrically operated opening and closing of the window sash is realized, the spring is sleeved on the center shaft for axial positioning by setting the spring accommodating cavity, and the end of the spring accommodating cavity is also positioned, so that the deformation and recovery process of the spring can be kept stable and will not deviate, the worm is positioned and installed by setting the worm mounting seat, the transmission stability is improved, the clutch protrusion is set below the hidden rod mounting seat, the worm is lifted, the driving gear in the linkage state is meshed, and the driving gear has a space for axial movement.

[0016] The chain type window opener with clutch control device can be further provided with: the chain comprises at least two groups of chain units arranged in cycles, the chain unit comprises mutually hinged outer chain group and inner chain group, the outer chain group and the inner chain group are provided with a bending prevention mechanism which is capable of mutually clamping the straight sides of the outer chain group and the inner chain group when the end portions of the adjacent outer chain group and the inner chain group abut, the bending prevention mechanism comprises a plug-in plate and a plug-in block which are mutually matched and clamped, the plug-in plate is provided with plug-in grooves on both sides for inserting the adjacent plug-in block, when the end portions of the adjacent outer chain group and the inner chain group abut, the plug-in block is inserted into the plug-in groove, when the end portions of the outer chain group and the inner chain group are separated, the plug-in block is separated from the plug-in groove, the plug-in plate is arranged at the straight side of the outer chain group and is curved towards the inner side, the plug-in block is arranged at the straight side of the inner chain group and is curved towards the outer side, so that the end portion of the plug-in block is correspondingly inserted into the plug-in groove.

[0017] By the above scheme, the chain of the window opener comprises a curved side and a straight side, the chain only bends towards the curved side, and the straight side is used to straighten the chain to push the window sash to open and close, the pressure acting end portion of the window sash acts on the chain to make it bend, and by arranging the corresponding bending prevention mechanism at the straight side of the outer chain group and the inner chain group, when the end portions of the adjacent outer chain group and the inner chain group abut (when the window opener is extended), the straight sides of the outer chain group and the inner chain group will be clamped to form a straight whole side, which improves the overall strength, avoids bending and can greatly prevent wind, and when the end portions of the outer chain group and the inner chain group are separated (when the chain is retracted into the window opener by the sprocket), the bending prevention mechanism will also contact the plug-in relationship to realize turning, which is convenient for the chain to be stored in the window opener, and because the chain unit at the front end is subjected to the pressure of the window sash and the chain at the rear end is subjected to the pushing force of the window opener, the chain is in a straightened state, at this time, the chain with the abutting end portion is inserted into the plug-in groove on the outer chain group when the chain is extended out of the box body, so that the straight sides of the chain extended out of the box body are linked with each other, which greatly avoids the bending and deformation of the chain and prevents the chain from being affected by wind, and when the chain is retracted into the window opener, because the sprocket drives the adjacent outer chain group and the inner chain group to greatly bend towards the curved side, the plug-in block can be pulled out of the plug-in groove one by one to realize storage, the plug-in plate is arranged on the outer chain group and curved towards the inner chain group, the plug-in block is arranged on the inner chain group and curved towards the outer chain, so that the plug-in plate and the plug-in block are correspondingly arranged at the intermediate position of the inner and outer chain groups, and the end portion of the plug-in block is correspondingly inserted into the plug-in groove, which is convenient for plugging and unplugging, and completes locking and unlocking, and the curved shape can reduce wind resistance and improve wind resistance effect.

[0018] The chain type window opener with clutch control device can be further provided with: the outer chain set includes two oppositely arranged outer chains and two outer chain shafts arranged between the outer chains to combine the two outer chains on the two sides, the inner chain set includes two oppositely arranged inner chains, the inner chain set is arranged between the outer chains, and the inner chain set is hinged to the outer chain shaft on one adjacent end, the outer chain is provided with a corresponding plug-in plate, the inner chain is provided with a corresponding plug-in block, the inner chain set further includes two inner chain shafts arranged between the inner chains to combine the two inner chains on the two sides, the inner chain shaft is on the same axis line as the outer chain shaft on one adjacent end, the inner chain shaft is externally sleeved with an inner shaft sleeve, the two ends of the inner shaft sleeve are respectively abutted against the inner walls of the two inner chains, the inner chain shaft and / or the outer chain shaft between the adjacent ends are provided with a driving gap through which the chain wheel passes, the box body is provided with a chain guide plate corresponding to the chain, and the inner chain and / or the outer chain are provided with an accommodation gap through which the chain guide plate passes.

[0019] The two outer chains and the two outer chain shafts form an outer chain set, the outer chain shaft and the inner chain form a hinged structure, the two plug-in plates are arranged on the outer chain set, and the two plug-in blocks are arranged on the inner chain set, so that two stable anti-bending mechanisms are realized, the overall strength is improved, the symmetrical structure improves the appearance and stability, the inner chain shaft is arranged outside or inside the outer chain shaft, the strength is increased, the stable hinge is realized, the inner shaft sleeve supports the inner chain and the outer chain through the inner chain, the overall strength is improved, the bending deformation is avoided, the chain wheel can rotate in the driving gap, the chain unit is opened and closed, the straightening and bending storage are realized, the chain guide plate can stably guide the chain into the box body along the predetermined route through the accommodation gap, and the stable guidance and storage are realized.

[0020] The chain type window opener with clutch control device can be further provided with: the chain head assembly includes a chain mounting head, the chain mounting head is internally provided with a force plate, the force plate is hinged to the top of the chain, the chain includes a curved side and a straight side, one end of the chain mounting head towards the straight side is provided with a rotating shaft, and one end of the chain mounting head towards the curved side is provided with an adjusting fastener, one end of the force plate is hinged to the chain mounting head through the rotating shaft, the other end is arranged at the end of the adjusting fastener, the adjusting fastener is movably connected to the chain mounting head and can move axially in the chain mounting head, and then the force plate is pushed to swing up and down along the rotating shaft.

[0021] The chain installation head is provided with a force applying plate, the chain is connected with the chain installation head through the force applying plate, when the chain is extended, the two ends of the chain are connected with the sash position and the window opener position (the force applying plate) respectively, the fastening member is controlled and adjusted, the end of the force applying plate on the bending side is lifted up, the chain at the bending side is lifted up and exerts a pulling force on the end of the chain towards the sash, during the pulling process, the end connected with the window opener does not move left and right, so that the straight side of the chain is pressed by the bending side, the straight side of the chain is slightly bent, the structural property of the chain determines that the straight side can only bear weight when it is slightly bent, the chain is prevented from being bent when supporting the sash, the wind resistance and bending resistance are improved, the structural strength is enhanced, the lifting height of the force applying plate can be adjusted according to different sash installation environments and chain lengths, the strength of the chain can be maintained, the adaptability is improved, the installation difficulty is reduced, and the inventory pressure is reduced.

[0022] The chain type window opener with the clutch control device can be further provided as follows: the gear transmission mechanism comprises a first gear shaft in meshing transmission with the driven gear, a first transmission gear arranged on the first gear shaft, a second gear shaft in meshing transmission with the first transmission gear, a second transmission gear arranged on the second gear shaft, and a third gear shaft in meshing transmission with the second transmission gear, and the chain wheel is arranged on the third gear shaft and rotates with the third gear shaft.

[0023] The above scheme is adopted, a plurality of group gear shafts are arranged, the transmission gears on the gear shafts are in upper and lower layered meshing, compact installation reduces the size of the window opener, and the output torque of the motor is increased, so that the window opener can control a heavier sash.

[0024] The chain type window opener with the clutch control device can be further provided as follows: the adjusting fastening member is an adjusting bolt, the chain installation head is provided with an adjusting horizontal plate corresponding to one end of the adjusting bolt, the adjusting bolt is in threaded connection with the adjusting horizontal plate, the chain installation head is provided with an adjusting opening for adjusting the adjusting bolt at the position of the adjusting bolt, the side of the chain installation head facing the chain is provided with a buffer rubber block, the buffer rubber block partially extends out of the chain installation head, the force applying plate is provided with a force applying surface abutting against the straight side of the chain, the force applying plate drives the chain to move through the force applying surface, the force applying plate is provided with a fixed pin in hinged connection with the chain, the two ends of the fixed pin abut against the inner wall of the chain installation head, the force applying surface comprises a first surface abutting against the upper end surface of the chain, a second surface abutting against the side surface of the straight side of the chain, and a circular arc surface connecting the first surface and the second surface, the top corner formed by the outward extension of the upper end surface and the side surface of the chain is adapted to the circular arc surface, the end of the chain installation head away from the chain is provided with a chain support, the chain installation head is in hinged connection with the chain support through a connecting pin shaft, and the chain support is provided with a mounting hole for mounting the chain support with the sash.

[0025] With the above scheme, the adjusting cross plate defines the initial position of the force plate to avoid disengagement, and the adjusting bolt is threadedly connected with the adjusting cross plate, so that the operator only needs to rotate the adjusting bolt at the adjusting opening to control the depth of the adjusting bolt into the chain mounting head, the adjusting bolt is preferably headless and has a top screw, so that the overall appearance is not affected and the adjustment is facilitated, the buffer rubber blocks are provided to prevent the chain mounting head from colliding with the window opener when it is retracted, delay the service life, and reduce noise, the buffer rubber blocks are preferably two, which are respectively arranged at the two ends of the chain and fixedly connected with the chain mounting head, an opening is formed on the side of the buffer rubber block corresponding to the adjusting bolt, so that the adjusting buckle is arranged on the buffer rubber block, the force plate is arranged in the chain mounting head, the chain is connected with the chain mounting member through the force plate, the chain includes a curved side and a straight side, the force plate can rotate with the chain, and when the force plate applies force to the straight side of the chain, the straightness of the chain is ensured when the chain supports the window sash, and the chain is hingedly connected with the force plate through the fixing pin; after the chain is extended to the position, the force surface of the chain abuts against and cooperates with the arrangement of the fixing pin to realize the mutual fixation between the force plate and the chain, prevent the force plate from shaking due to external factors to affect the stability of the chain, the first surface, the second surface and the arc surface are arranged to further increase the contact area with the chain, increase the lateral force receiving surface, ensure the stability of the chain, and the second surface cooperates with the first surface to further improve the stability of the force plate after the chain is extended to the position; the connecting part of the first surface and the second surface is arranged as an arc surface, the cooperation with the chain is more compact, and the use effect is better, the chain support can be adjusted at any time in the process of opening and closing of the window sash through the hinging of the connecting pin shaft and the chain support, interference is avoided, stability is improved, and adaptability is improved.

[0026] The application will be further described below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of an embodiment of the application.

[0028] Figure 2 It is an exploded view of Figure 1

[0029] Figure 3 It is a structural schematic diagram of a motor and a gear transmission mechanism of an embodiment of the application.

[0030] Figure 4 It is a three-dimensional schematic diagram of a gear clutch mechanism in a linkage state of an embodiment of the application.

[0031] Figure 5 It is a three-dimensional schematic diagram of a gear clutch mechanism in a linkage state of an embodiment of the application Figure 2 .

[0032] Figure 6 ​A perspective view of a gear clutch mechanism in a disengaged state according to an embodiment of the present application.

[0033] Figure 7 A perspective view of a gear clutch mechanism in a disengaged state according to an embodiment of the present application.

[0034] Figure 8 A perspective view of a gear clutch mechanism in a disengaged state according to an embodiment of the present application. Figure 7

[0035] Figure 9 An exploded view of a gear clutch mechanism according to an embodiment of the present application.

[0036] Figure 10 A perspective view of a chain according to an embodiment of the present application.

[0037] Figure 11 A connection diagram of a chain and a sprocket according to an embodiment of the present application.

[0038] Figure 12 An exploded view of a chain unit according to an embodiment of the present application.

[0039] Figure 13 A perspective view of a chain head assembly according to an embodiment of the present application.

[0040] Figure 14 An exploded view of a chain head assembly according to an embodiment of the present application. Figure 13

[0041] A cross-sectional view of a chain head assembly according to an embodiment of the present application. Figure 15

[0042] A structural diagram of a chain head and a chain according to an embodiment of the present application. Figure 16 Embodiments

[0043] As Figures 1-9 ​​The chain type window opener with clutch control device is shown, which comprises a box body 1, a motor 2 arranged in the box body 1, a chain 3, a chain drive assembly for driving the chain 3 to extend or retract in the box body 1, and a chain head assembly 4 arranged at the end of the chain 3 for connecting with a window sash. The chain drive assembly comprises a sprocket 30 engaged with the chain 3, a gear transmission assembly 5 arranged between the motor 2 and the sprocket 30, the motor 2 drives the sprocket 30 to rotate through the gear transmission assembly 5, and the box body 1 is provided with a gear clutch mechanism 6 at one end corresponding to the motor 2. The gear clutch mechanism 6 comprises a driving gear 61 arranged axially in the box body 1, a driven gear 62, and a clutch plate 63 arranged on the driving gear 61. The driving gear 61 is linked with the output end of the motor 2, the driven gear 62 is linked with the gear transmission assembly 5, the driving gear 61 is provided with a clutch groove 611 for accommodating the driven gear 62, the driven gear 62 is provided with a clutch block 621 matched with the clutch groove 611, the center of the driven gear 62 is provided with a center shaft 622 which rotates circumferentially in the box body 1 after passing through the driving gear 61, and the end of the driving gear 61 away from the driven gear 62 is provided with a spring 64 for urging the driving gear 61 to abut against the driven gear 62. The spring 64 is sleeved on the outer circumferential surface of the center shaft 622, the box body 1 is provided with a spring accommodating cavity 11 for mounting the spring 64, one end of the spring 64 is accommodated in the spring accommodating cavity 11 and abuts against the spring accommodating cavity 11, and the other end abuts against the driving gear 61. One end of the clutch plate 63 extends out of the box body 1 to form a control button 631, and the other end abuts against the surface of the driving gear 61. By pressing the control button 631, the driving gear 61 and the driven gear 62 are linked or separated. The gear transmission mechanism 5 comprises a first gear shaft 51 engaged with the driven gear 62, a first transmission gear 511 arranged on the first gear shaft 51, a second gear shaft 52 engaged with the first transmission gear 511, a second transmission gear 521 arranged on the second gear shaft 52, and a third gear shaft 53 engaged with the second transmission gear 521. The sprocket 30 is arranged on the third gear shaft 53 and rotates with the third gear shaft 53. The output end of the motor 2 is provided with a worm 21 engaged with the driving gear 61. The box body 1 is provided with a worm mounting seat 12 corresponding to the worm 21 for positioning and rotating the worm 21. The worm mounting seat 12 and the box body 1 are provided with a clutch protrusion 13. In this structure, the driving gear 61 is in linkage with the driven gear 62 under the action of the spring 64, and is engaged with the worm 21. When the window opener is in the electric mode, the worm 21 is driven to rotate by the motor 2, and then the driving gear 61, the driven gear 62, the first gear shaft 51, the second gear shaft 52, the third gear shaft 53 and the sprocket 30 are sequentially linked to drive the chain 3 to extend or retract in the box body 1, and then drive the chain head assembly 4 connected with the window sash to control the opening and closing of the window sash, thereby realizing electric control. When manual control is needed, the control button 631 outside the box body 1 is pressed to separate the driving gear 61 and the driven gear 62. When the chain 3 extends or retracts in the box body 1,In turn drive sprocket 30, gear mechanism 5 rotates, gear mechanism 5 drives driven gear 62 idling, does not produce load with motor 2, enables user to conveniently open and close window sash, is convenient for opening and closing window in emergency state.

[0044] As Figures 3-9As shown, the box 1 corresponding to the clutch plate 63 one end is provided with clutch control device, clutch control device includes the clutch control device is provided in the box 1 corresponding to the clutch plate 63 one side of the clutch control frame 65, the clutch control frame 65 is provided in the clutch switching groove 66 and is arranged in the clutch plate 63 with the clutch plate 63 axial movement of the limit hook 67, the limit hook 67 one end is connected with the clutch plate 63, the other end is arranged in the clutch switching groove 66, the clutch switching groove 66 is close to the control button 631 one end is provided with the first limit part 661 that allows the driving gear 61 and the driven gear 62 to keep the linkage state, away from the control button 631 one end is provided with the second limit part 662 that allows the driving gear 61 and the driven gear 62 to keep the separation state, the limit hook 67 moves in the clutch switching groove 66 and switches between the first limit part 661 and the second limit part 662, the clutch switching groove 66 is provided with the first slide 663 that guides the limit hook 67 from the first limit part 661 to the second limit part 662, the clutch switching groove 66 is provided with the second slide 664 that guides the limit hook 67 from the second limit part 662 to the first limit part 661, the second limit part 662 is arranged between the first slide 663 and the second slide 664, the second slide 664 and the first limit part 661 are provided with the first check surface 665, the first check surface 665 gradually increases from the second slide 664 to the first limit part 661, the first check surface 665 is used to guide the limit hook 67 from the second slide 663 into the first limit part 661, and prevent the limit hook 67 from directly entering the second slide 664 from the first limit part 661, the first slide 663 and the second slide 664 are provided with the stop part 666 protruding to the first limit part 661, the stop part 666 is used to prevent the limit hook 67 from directly entering the second slide 664 from the first slide 663, the second limit part 662 is arranged above the stop part 666, and is a groove type structure, and the opening covers the stop part 666, the side of the stop part 666 towards the first slide 663 is provided with the guide surface 6661, the guide surface 6661 gradually inclines along the first slide 663 to the second slide 664, thereby guiding the limit hook 67 into the second limit part 662, the second limit part 662 is provided with the second check surface 667, the second check surface 667 gradually rises along the first slide 663 to the second slide 664, the second check surface 667 is used to guide the limit hook 67 from the first slide 663 to the second slide 664, and prevent the limit hook 67 from returning to the first slide 663 from the second slide 664, realize stable clutch switching, the clutch control frame 65 is provided with the clutch guide groove 651, the clutch plate 636 is an arc plate, the clutch plate 63 is provided with the T type sliding block 632 towards the clutch guide groove 651, the T type sliding block 632 is connected with the limit hook 67 after passing through the clutch guide groove 651, in this structure state, the normal state spring 64 pushes the driving gear 61 and the driven gear 62, at this time, the driving gear 61 and the driven gear 62 are in meshing state, the motor 2 works,The driving gear 61 is driven to rotate, and then the driven gear 62 is driven to rotate, so that the window sash is opened and closed through the chain 3, and the control button 631 is extended out of the box body 1, and the limiting hook 67 is located at the first limiting portion 661; when the window sash needs to be manually opened and closed, the control button 631 on the outside is only pressed, and then the clutch plate 63 is pushed downward to separate the clutch groove 611 of the driving gear 61 from the clutch block 621 of the driven gear 62, and the linkage is released, at this time, the window sash is manually opened and closed, and the gear transmission mechanism 5 drives the driven gear 62 to rotate idly, and does not generate load to the motor 2, and in the process of pressing the control button 631, the limiting hook 67 is moved along the first sliding groove 663 to the stop portion 666 due to the downward movement of the clutch plate 63 and the blockage of the first check surface 665, and is hindered by the stop portion 666, and after the control button 631 is released, the limiting hook 67 moves upward along the guide surface 661 and enters the second limiting portion 662 above, the second limiting portion 662 is a groove type structure, so that it does not fall out in the static state, and the position of the second limiting portion 662 is lower than that of the first limiting portion 661, so that it can keep the locking state, and the driving gear 61 and the driven gear 62 are in the disengaged state, and the window sash can be manually opened and closed; when it needs to return to the meshing state, the limiting hook 67 in the second limiting portion 662 is close to one end of the second sliding groove 664 due to the setting of the second check surface 667, so that it passes the stop portion 666, and only needs to press the control button 631 again, the limiting hook 67 moves into the second sliding groove 664 and is guided by the first check surface 665 to return to the first limiting portion 661, at this time, the clutch plate 63 is reset, and the driving gear 61 is also reset due to the elastic force of the spring 64, so that the driving gear 61 and the driven gear 62 return to the meshing state, and the electric opening and closing is realized, so that the user can realize stable clutching without pressing the control button 631 all the time when manually opening and closing.

[0045] As Figure 10 , Figure 11 , Figure 12As shown, the chain 3 comprises at least two groups of cyclically arranged chain units, the chain units comprising a curved side a and a straight side b, the chain units comprising the curved side a and the straight side b, the chain only bends towards the curved side a, the chain units comprising mutually articulated outer chain groups 31 and inner chain groups 32, the outer chain groups 31 and the inner chain groups 32 having a small-amplitude bending (the bending direction is away from the curved side a) of the straight side b of the chain 3 when the end portions of the adjacent outer chain groups 31 and the inner chain groups 32 abut. The structural properties of the chain 3 determine that only when the straight side b is small-amplitude bent can the chain 3 bear weight, ensuring that the chain 3 will not be bent when supporting the sash.The application relates to a chain type window opener suitable for long and short strokes, which improves the application range and is provided with a bending prevention mechanism for mutually clamping the straight sides b of the outer chain group 31 and the inner chain group 32. The bending prevention mechanism comprises a plug-in plate 33 and a plug-in block 34 which are arranged at the straight sides b of the outer chain group 31 and the inner chain group 32 and are mutually clamped. The two sides of the plug-in plate 33 are provided with plug-in grooves 331 for clamping the adjacent plug-in blocks 34. When the end portions of the adjacent outer chain group 31 and the inner chain group 32 abut, the plug-in block 34 is inserted into the plug-in groove 331. When the end portions of the outer chain group 31 and the inner chain group 32 are separated, the plug-in block 34 is separated from the plug-in groove 331. The plug-in plate 33 is arranged at the straight side b of the outer chain group 31 and is bent towards the inner side of the inner chain group 32. The plug-in block 34 is arranged at the straight side b of the inner chain group 32 and is bent towards the outer side of the outer chain group 31. The end portion of the plug-in block 34 is correspondingly clamped with the plug-in groove 331. In this way, when the chain 3 is extended out of the box body 1 of the window opener, the chain unit at the front end is bent due to the pressure of the manually operated window shutter. The chain 3 at the rear end is subjected to the thrust of the window opener, so that the chain is in a straight state. At this time, the chain 3 with the abutting end portions is extended out of the box body 1. The plug-in block 34 is inserted into the plug-in groove 331 on the outer chain group 31 at the front end, so that the straight sides b of the chain 3 extended out of the box body 1 are mutually connected. The chain 3 is greatly prevented from being bent and deformed and is not affected by the wind. When the chain is retracted into the window opener, the plug-in block 34 is pulled out of the plug-in groove 331 due to the fact that the sprocket 30 greatly bends the curved side a between the adjacent outer chain group 31 and the inner chain group 32, so that the chain is retracted. The outer chain group 31 comprises two oppositely arranged outer chains 310 and two outer chain shafts 311 arranged between the outer chains 310 and combining the two outer chains 310. The inner chain group 32 comprises two oppositely arranged inner chains 320 and two inner chain shafts 321 arranged between the inner chains 320 and combining the two inner chains 320. The inner chain group 32 is arranged between the outer chains 310 and is hingedly connected to the adjacent end outer chain shaft 311 through the inner chain shaft 321. The inner chain shaft 321 is sleeved outside the outer chain shaft 310, so that the inner chain shaft 321 and the outer chain shaft 311 are on the same axis line. The inner chain shaft 321 is externally sleeved with an inner shaft sleeve 322. The two ends of the inner shaft sleeve 322 respectively abut against the inner walls of the two inner chains 320, so as to support the inner chains 320 and the outer chains 310 and improve the strength. Meanwhile, the inner shaft sleeve 322 forms a driving gap c for the sprocket 30 to pass through. The outer chain 310 is provided with the correspondingly arranged plug-in plate 33. The inner chain 320 is provided with the correspondingly arranged plug-in block 34. The inner chain 310 and / or the outer chain 320 are provided with an accommodation gap d for the chain guide plate 35 to pass through, so that the chain can be stably guided and retracted. The chain 3 provided with the structure can mutually connect the straight sides b of the chain 3 extended out of the box body 1, greatly prevents the chain 3 from being bent and deformed and is not affected by the wind, and improves the windproof performance of the window opener.

[0046] AsFigures 13-16 As shown, the chain head assembly 4 comprises a chain mounting head 41, which is provided with a force plate 42 hinged to the top of the chain 3. The chain 3 comprises a curved side a and a straight side b. The chain mounting head 41 is provided with a rotating shaft 43 at one end facing the straight side b and an adjusting bolt 44 at the other end facing the curved side a. One end of the force plate 42 is hinged to the chain mounting head 41 through the rotating shaft 43, and the other end is provided corresponding to the end of the adjusting bolt 44. The adjusting bolt 44 is threadedly connected to the chain mounting head 41 and can move axially in the chain mounting head 41, thereby pushing the force plate 42 to swing up and down along the rotating shaft 43 as a fulcrum. The chain mounting head 41 is provided with an adjusting cross plate 45 at one end corresponding to the adjusting bolt 44. The adjusting bolt 44 is threadedly connected to the adjusting cross plate 45. The chain mounting head 41 is provided with an adjusting port 411 for adjusting the adjusting bolt 44 at the position corresponding to the adjusting bolt 44. The chain mounting head 41 is provided with a buffer rubber block 46 at one side facing the chain 3. The buffer rubber block 46 partially extends out of the chain mounting head 41 for buffering when colliding with the box body 1. The force plate 42 is provided with a force surface abutting against the straight side b of the chain 3. The force plate 42 drives the chain 3 to move through the force surface. The force plate 42 is provided with a fixed pin 47 hinged to the chain 3. The two ends of the fixed pin 47 abut against the inner wall of the chain mounting head 41. The force surface comprises a first surface 421 abutting against the upper end surface of the chain 3, a second surface 422 abutting against the side surface of the straight side b of the chain 3, and a circular arc surface 423 connecting the first surface 421 and the second surface 422. The top corner 36 formed by the intersection of the outwardly extending upper end surface and side surface of the chain 3 is adapted to the circular arc surface 423. The chain mounting head 41 is provided with a chain bracket 48 at the end away from the chain 3. The chain mounting head 41 is hinged to the chain bracket 48 through a connecting pin shaft 49. The chain bracket 48 is provided with a mounting hole 481 for mounting the chain bracket 48 to the sash. The chain bracket 48 can be adjusted at any time during the opening and closing of the sash through the hinging of the chain mounting head 41 to the chain bracket 48 through the connecting pin shaft 49, thereby avoiding interference and improving stability. In this structure, the adjusting bolt 44 pushes the force plate 42 to move away from the side of the window opener, thereby moving the force plate 42 upward along the rotating shaft 43. Since the other end of the chain 3 is connected to the window opener, when the force plate 34 is pulled, the curved side a of the chain 3 will be subjected to an upward pulling force F1. At the same time, the center of the chain 3 will form a deformation angle a with the chain 3 at the end of the window opener. After the curved side a of the head of the chain 3 is subjected to the pulling force F1, the straight side of the other end will be subjected to a pushing force F2 in the curved side direction. This makes the curved side a of the chain 3 form a small amplitude bending. The structural properties of the chain 3 determine that only when the straight side b is bent slightly will it not be affected by the wind force and exert a corresponding lateral force according to the change in the length of the chain 3. This is suitable for chain type window openers with long and short strokes, thereby improving the scope of application.

Claims

1. A chain-type window opener with a clutch control device, comprising a housing, a motor disposed within the housing, a chain, and a chain drive assembly for driving the chain to extend or retract into the housing, wherein the chain drive assembly includes a sprocket meshing with the chain and a gear transmission assembly disposed between the motor and the sprocket, the motor driving the sprocket to rotate via the gear transmission assembly, characterized in that: The housing has a gear clutch mechanism at one end corresponding to the motor. This mechanism includes a driving gear, a driven gear, and a clutch plate mounted on the driving gear, all axially arranged within the housing. The driving gear is linked to the motor's output, and the driven gear is linked to a gear transmission assembly. The driving gear has a clutch groove or clutch block within it to accommodate the driven gear. The driven gear has a clutch block or clutch groove that matches the clutch groove or clutch block. The driven gear has a central shaft that passes through the driving gear and rotates circumferentially within the housing. The end of the driving gear furthest from the driven gear has an elastic element that causes the driving gear to abut against the driven gear. One end of the clutch plate extends out of the housing to form a control button, and the other end abuts against the surface of the driving gear. By pressing the control button, the driving gear and driven gear are controlled to be linked or separated. The housing is provided with a clutch control device at one end corresponding to the clutch plate. The clutch control device includes a clutch operating frame set on one side of the housing corresponding to the clutch plate, a clutch switching groove set at the clutch operating frame, and a limiting hook set on the clutch plate that moves axially with the clutch plate. One end of the limiting hook is connected to the clutch plate, and the other end is set in the clutch switching groove. The end of the clutch switching groove near the control button is provided with a first limiting part that keeps the driving gear and driven gear in a linked state, and the end away from the control button is provided with a second limiting part that keeps the driving gear and driven gear in a separated state. The limiting hook slides in the clutch switching groove with the movement of the clutch plate and switches between the first limiting part and the second limiting part.

2. A chain window operator with clutch control according to claim 1, characterized in that: The clutch switching groove is provided with a first slide rail to guide the limiting hook from the first limiting part to the second limiting part. The clutch switching groove is provided with a second slide rail to guide the limiting hook from the second limiting part to the first limiting part. The second limiting part is disposed between the first slide rail and the second slide rail. A first check surface is provided between the second slide rail and the first limiting part. The first check surface gradually increases from the second slide rail to the first limiting part. The first check surface is used to guide the limiting hook from the second slide rail into the first limiting part and prevent the limiting hook from directly entering the second slide rail from the first limiting part.

3. A chain window operator with clutch control according to claim 2, characterized in that: The first limiting part gradually tilts downwards towards the second limiting part to form the first slide rail. A stop part protruding towards the first limiting part is provided between the first slide rail and the second slide rail. The stop part is used to prevent the limiting hook from directly entering the second slide rail from the first slide rail. The second limiting part is located above the stop part and has a groove-shaped structure. The second limiting part has a second check surface. The second check surface gradually rises along the first slide rail towards the second slide rail. The second check surface is used to guide the limiting hook from the first slide rail into the second slide rail and prevent the limiting hook from returning from the second slide rail to the first slide rail. A clutch guide groove is provided on the clutch control frame. The clutch plate is an arc-shaped plate. A T-shaped sliding block is provided on the clutch plate facing the clutch guide groove. The T-shaped sliding block passes through the clutch guide groove and is connected to the limiting hook.

4. A chain window operator with clutch control according to any one of claims 1 to 3, characterized in that: The output end of the motor is provided with a worm engaging with the driving gear, the elastic member is a spring, the spring is sleeved on the outer circumferential surface of the central shaft, the box body is provided with a spring accommodating cavity for mounting the spring, one end of the spring abuts against the spring accommodating cavity, and the other end abuts against the driving gear, the box body is provided with a worm mounting seat for positioning and rotating the worm corresponding to the worm, and the worm mounting seat and the box body have a clutching protrusion.

5. A chain window operator with clutch control according to any one of claims 1 to 3, characterized in that: The chain comprises at least two groups of circularly arranged chain units, each chain unit comprises mutually hinged outer chain groups and inner chain groups, and the outer chain groups and the inner chain groups have a bending prevention mechanism which is capable of mutually clamping the straight sides of the outer chain groups and the inner chain groups when the end portions of adjacent outer chain groups and inner chain groups abut against each other, the bending prevention mechanism comprises mutually clamping plug-in plates and plug-in blocks arranged at the straight sides of the outer chain groups and the inner chain groups, both sides of each plug-in plate are provided with plug-in grooves for inserting and clamping adjacent plug-in blocks, when the end portions of adjacent outer chain groups and inner chain groups abut against each other, the plug-in blocks are inserted into the plug-in grooves, and when the end portions of the outer chain groups and the inner chain groups are separated, the plug-in blocks are separated from the plug-in grooves, the plug-in plate is arranged at the straight side of the outer chain group and curves inward, and the plug-in block is arranged at the straight side of the inner chain group and curves outward, so that the end portion of the plug-in block is correspondingly inserted into the plug-in groove.

6. A chain window operator with clutch control according to claim 5, characterised in that: The outer chain group comprises two oppositely arranged outer chains and two outer chain shafts arranged between the outer chains to combine the two outer chains, the inner chain group comprises two oppositely arranged inner chains, the inner chain group is arranged between the outer chains and is hinged to the outer chain shaft at one end, each outer chain is provided with a correspondingly arranged plug-in plate, each inner chain is provided with a correspondingly arranged plug-in block, and the inner chain group further comprises two inner chain shafts arranged between the inner chains to combine the two inner chains, the inner chain shafts are coaxial with the outer chain shaft at one end, each inner chain shaft is sleeved with an inner shaft sleeve, the two ends of the inner shaft sleeve abut against the inner walls of the two inner chains, respectively, and the driving gaps for the sprocket to pass through are arranged between adjacent inner chain shafts and / or outer chain shafts, the chain guide plate is arranged corresponding to the chain on the box body, and the accommodation gaps for the chain guide plate to pass through are arranged between the inner chains and / or the outer chains.

7. A chain window operator with clutch control according to any one of claims 1 to 3, characterised in that: The chain head assembly arranged at the end of the chain for connecting the window sash comprises a chain mounting head, the chain mounting head is provided with a force applying plate, the force applying plate is hinged to the top of the chain, the chain comprises a curved side and a straight side, one end of the chain mounting head towards the straight side is provided with a rotating shaft, and the other end of the chain mounting head towards the curved side is provided with an adjusting fastener, one end of the force applying plate is hinged to the chain mounting head through the rotating shaft, and the other end of the force applying plate is arranged corresponding to the end of the adjusting fastener, the adjusting fastener is movably connected to the chain mounting head and can move axially in the chain mounting head, thereby pushing the force applying plate to swing up and down along the rotating shaft.

8. A chain window operator with clutch control according to any one of claims 1 to 3, characterised in that: The gear transmission assembly comprises a first gear shaft in mesh transmission with a driven gear, a first transmission gear arranged on the first gear shaft, a second gear shaft in mesh with the first transmission gear, a second transmission gear arranged on the second gear shaft, and a third gear shaft in mesh with the second transmission gear, wherein the sprocket is arranged on the third gear shaft and rotates with the third gear shaft.

9. A chain window operator with clutch control according to claim 7, characterized in that: The adjusting fastener is an adjusting bolt, the chain mounting head is provided with an adjusting transverse plate corresponding to one end of the adjusting bolt, the adjusting bolt is in threaded connection with the adjusting transverse plate, the chain mounting head is provided with an adjusting opening for adjusting the adjusting bolt at the position corresponding to the adjusting bolt, the side of the chain mounting head facing the chain is provided with a buffer rubber block, the buffer rubber block partially extends out of the chain mounting head, the force applying plate is provided with a force applying surface abutting against the straight side of the chain, the force applying plate drives the chain to move through the force applying surface, the force applying plate is provided with a fixing pin in hinged connection with the chain, two ends of the fixing pin abut against the inner wall of the chain mounting head, the force applying surface comprises a first surface abutting against the upper end surface of the chain, a second surface abutting against the side surface of the straight side of the chain, and a circular arc surface connecting the first surface and the second surface, the top angle formed by the outward extension of the upper end surface and the side surface of the chain is adapted to the circular arc surface, the end of the chain mounting head away from the chain is provided with a chain support, the chain mounting head is in hinged connection with the chain support through a connecting pin shaft, and the chain support is provided with a mounting hole for mounting the chain support and the window sash.

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