CN115405188A - Lifting structure and lifting window - Google Patents

Abstract

The invention discloses a lifting structure and a lifting window, which comprise two lifting units which are arranged at intervals left and right, wherein each lifting unit comprises: the chain wheel seat is provided with a driving wheel and a driven wheel which are sequentially arranged along the front-back direction, and the rotation axes of the driving wheel and the driven wheel extend along the left-right direction; the chain is lapped on the driving wheel and the driven wheel, and the front end and the rear end of the chain fall and are respectively connected with one side of the movable window sash and the balance member; the motor drives the driving wheel in a rotating mode, the hanging distance between the two ends of the chain is increased through the driving wheel and the driven wheel which are arranged at intervals, collision and interference between the balance member and the movable window sash are prevented, the diameters and the sizes of the driving wheel and the driven wheel can be kept unchanged, the connecting distance between the two ends of the chain can be increased, and occupied space in a window frame is reduced.

Description

Lifting structure and lifting window

Technical Field

The invention relates to the field of lifting structures of lifting windows, in particular to a lifting structure and a lifting window.

Background

Automatic lifting window on the market has fixed casement and the movable window fan that can move about from top to bottom, the activity casement often is the location on the chain, then adopt sprocket drive's mode to adjust the height of activity casement, in order to realize opening and shutting of lifting window, however, in the use, be located the transmission structure of activity casement outdoor side and indoor side easily and lift window between contact each other, interfere, in order to reduce the interference between transmission structure and the lifting window, need select the sprocket of great diameter, but the sprocket of major diameter occupies the installation space of window frame, reduce the window area, and also can cause the influence to holistic outward appearance.

Disclosure of Invention

The present invention aims to provide a lifting structure and a lifting window which solves one or more of the problems of the prior art, at least providing a useful alternative or creation.

The solution of the invention for solving the technical problem is as follows:

a lifting structure comprising two lifting units spaced left and right, said lifting units comprising: the chain wheel seat is internally provided with a driving wheel and a driven wheel which are sequentially arranged along the front-back direction, and the rotation axes of the driving wheel and the driven wheel extend along the left-right direction; the chain is lapped on the top sides of the driving wheel and the driven wheel, and the front end and the rear end of the chain drop; and the motor drives the driving wheel in a rotating manner.

The technical scheme at least has the following beneficial effects: the chain is lapped and meshed with the driving wheel and the driven wheel which are arranged in parallel in the front and the back, the front end and the back end of the chain are respectively a pulling end and a damping end, the motor drives the driving wheel to rotate, so that the chain provides direct output force for the upper position and the lower position of the pulling end, meanwhile, the driven wheel is driven by the chain to rotate and drive the damping end to move correspondingly, the damping end can balance the torsion borne by the motor and reduce the load of the motor.

As a further improvement of the above technical solution, the present invention further includes a balance member, wherein the balance member includes a pull rope, a movable pulley and a tension spring, one end of the pull rope is connected to the rear end of the chain, the other end of the pull rope downwardly passes around the movable pulley and upwardly extends, the upper end of the tension spring is connected to the movable pulley, and the lower end of the tension spring, the other end of the pull rope and the sprocket seat are relatively fixed. The pulling end of chain connects movable window fan, the front end of stay cord is connected to the damping end of chain, when movable window fan when the downstream, the extension spring that lengthens gradually can increase the pulling force to the movable window fan gradually, when movable window fan rebound, the extension spring reducible pulling force to the movable window fan that recovers gradually, so both can reduce the motor when to the load requirement of movable window fan, still can utilize the pulling force balance of gradual change to offset the required drive power of slowing down to the movable window fan, improve motor output stability, and simultaneously, the flexible range of reduction spring under movable pulley and the haulage rope cooperation, reduce the emergence of spring fatigue phenomenon.

As a further improvement of the above technical solution, the chain driving device further comprises a balance member, wherein the balance member is a counterweight rod, and the upper end of the counterweight rod is connected with the rear end of the chain. The front end of the chain is connected with the external movable window sashes, the rear end of the chain is connected with the counterweight rod, the counterweight rod can provide stable pulling force, the load requirement of the motor on the movable window sashes is reduced, and the structure is simple and reliable.

As a further improvement of the technical scheme, the driving wheel is synchronously connected with the driving shaft, the driven wheel is synchronously connected with the driven shaft, the driving shaft and the driven shaft are in bearing connection with the chain wheel seat, the chain wheel seat comprises a first seat plate and a second seat plate which are arranged at left and right intervals, and the two ends of the driving shaft and the two ends of the driven shaft are respectively and rotationally connected to the first seat plate and the second seat plate. Sprocket seat and motor are fixed to be set up on the peripheral hardware window frame, the driving shaft bearing is connected in the sprocket seat, driven wheel bearing is connected in the sprocket seat, the bearing is connected and is guaranteed the action wheel and the rotational stability who follows the driving wheel, reduce rocking of activity casement and balance member, realize the drive of motor to the action wheel simultaneously, and, first bedplate and second bedplate are separated and are set up, make driving shaft and driven shaft carry out both ends location, the installation stability is improved, and simultaneously, the interval space between first bedplate and the second bedplate realizes drooping of chain, prevent the interference between chain and the sprocket seat.

As another improvement of the above technical solution, the present invention further includes a distance adjusting structure, wherein the sprocket seat includes a fixed seat and a sliding seat, the fixed seat and the sliding seat are respectively arranged in front and at back, the driving wheel is rotatably connected to the fixed seat, the driven wheel is rotatably connected to the sliding seat, and the distance adjusting structure can adjust the front and back positions of the sliding seat, so that the sliding seat is close to or far away from the fixed seat. The fixed seat and the external window frame are relatively fixed, and the distance between the sliding seats can be adjusted by the distance adjusting structure according to the thicknesses of the movable window sashes and the positioning window sashes, so that the distance between the driving wheel and the driven wheel is changed, and the applicability and the use range are improved.

As a further improvement of the above technical solution, the distance adjusting structure includes a screw rod and a slide rail, the slide seat is provided with a threaded passage extending forward and backward, the front end of the screw rod is rotatably connected to the fixed seat, the rear end of the screw rod is in threaded fit with the threaded passage and penetrates out of the threaded passage, and the slide seat is slidably connected to the slide rail. The one end location of screw rod is in deciding the seat, and the other end passes the screw thread passageway of slide, and when the screw rod rotated, the slide can be followed the screw rod and be close to towards deciding the seat, perhaps keep away from deciding the seat, realizes the action wheel and follows the interval adjustment between the driving wheel, improves the suitability and the application range that promote the structure.

The invention also provides a lifting window, which comprises a window frame, a fixed sash and the lifting structure, wherein the fixed sash is fixedly connected in the window frame, and the movable sash is connected in the window frame in a vertically sliding manner. The motor drives the driving wheel to rotate, so that the movable window sash moves upwards and closes the window frame, or the movable window sash moves downwards and opens the window frame, ventilation and use are facilitated, and meanwhile, the movable window sash is connected to the window frame in a sliding mode, and attractiveness and activity stability of the movable window sash are improved.

As a further improvement of the above technical solution, the window frame includes a top frame and side frames, the two side frames are connected to the left and right sides of the top frame, the sprocket seat and the motor are both disposed in the top frame, a first chamber and a second chamber are partitioned along the front and rear directions in the side frames, two ends of the chain respectively hang into the first chamber and the second chamber from the top frame, and the movable window sash is slidably connected to the side frames. Motor and chain wheel seat install on the top frame, it is convenient to carry the activity casement and draw, and it has first cavity and second cavity to separate in the side frame, the upper end opening of first cavity and second cavity all communicates in top frame inner chamber, make two jars of chain can hang down into from the direct subregion of chain wheel seat department, the sliding range of activity casement corresponds the position of first cavity, balanced component is located the second cavity, prevent activity casement and balanced component production interference, and simultaneously, the range of motion of restriction balanced component, the reduction is rocked, and service life and stability in use are improved.

As another improvement of the above technical solution, the present invention further includes an electric screen window, the window frame is divided into an outdoor side and an indoor side along a front-rear position, the movable window sash is located on the outdoor side, a cross beam is connected to a top of the fixed window sash, the cross beam extends rearward, the electric screen window includes a driving member, a winding drum, a screen curtain and a lower cross beam, the winding drum is located on a top of the indoor side and is connected to the window frame along a left-right direction, the screen curtain is wound around the winding drum, the lower cross beam is connected to a lower side edge of the screen curtain, and the driving member rotatably drives the winding drum so that the lower cross beam is abutted to the cross beam downward. After the user dropped movable window fan, can shelter from the first space of window width through electronic screen window to realize ventilating, improve the functionality, simultaneously, electronic screen window and movable window fan are located indoor side and outdoor side respectively, prevent interference between them, and the person of facilitating the use simultaneously controls and the dismouting electronic screen window, and improvement user uses and experiences.

As a further improvement of the above technical solution, the present invention further includes a balance member, wherein the balance member includes a pull rope, a movable pulley and a tension spring, one end of the pull rope is connected to the rear end of the chain, the other end of the pull rope downwardly passes around the movable pulley and upwardly extends to be connected to the window frame, the upper end of the tension spring is connected to the movable pulley, and the lower end of the tension spring is connected to the window frame. The extension spring can provide damping effect when the activity window moves from top to bottom to reduce the load of motor when opening the operation or braking, improve motor output stability, and, the lower extreme of extension spring, the stay cord are all installed and are fixed in the window frame far away from the one end of chain and sprocket seat, improve pleasing to the eye degree.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.

FIG. 1 is a side view in vertical section of a lift window provided in accordance with an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of region A of FIG. 1;

FIG. 3 is a structural diagram of a lifting structure according to an embodiment of the present invention;

fig. 4 is a top view of a transverse cross-sectional view of a lift window provided in accordance with an embodiment of the present invention.

In the drawings: 100-window frame, 110-lifting structure, 120-movable window sash, 130-fixed window sash, 131-crossbeam, 141-indoor side, 142-outdoor side, 201-top frame, 210-chain wheel seat, 220-driving wheel, 230-driven wheel, 240-chain, 251-reel, 252-yarn curtain, 253-lower crossbeam, 310-driving shaft, 320-driven shaft, 330-first seat plate, 340-second seat plate, 350-connecting bridge, 361-base, 362-cover, 401-side frame, 410-first chamber, 420-second chamber, 430-roller, 440-first limiting part, 450-second limiting part and 460-anti-swing space.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the connection relations mentioned herein do not mean that the components are directly connected, but mean that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. The technical characteristics of the invention can be combined interactively on the premise of not conflicting with each other.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 and 2, the lifting structure 110 includes two lifting units spaced left and right, and the lifting units include: the chain wheel seat 210 is sequentially provided with a driving wheel 220 and a driven wheel 230 along the front-back direction, and the rotating axes of the driving wheel 220 and the driven wheel 230 extend along the left-right direction; the chain 240 is lapped on the driving wheel 220 and the driven wheel 230, and the front end and the rear end of the chain 240 fall and are respectively connected with one side of the movable window sash 120 and the balance member; the motor rotationally drives the drive pulley 220.

Specifically, a mounting distance is provided between the driving wheel 220 and the driven wheel 230, the chain 240 is overlapped and engaged with the driving wheel 220 and the driven wheel 230 which are juxtaposed in the front and rear, and the movable window sash 120 is connected to a front end of the chain 240 and the balance member is connected to a rear end of the chain 240.

When the window lifting mechanism is used, the motor drives the driving wheel 220 to rotate, the chain 240 provides direct pulling force for the movable window sash 120, so that the movable window sash 120 can move up and down, and meanwhile, the driven wheel 230 is driven by the chain 240 to rotate and drive the balance member to move correspondingly.

Further, in fact, the driving wheel 220 and the driven wheel 230 are both double sprockets, and the chain 240 is a double chain 240, so that the bearable load capacity is improved, the bearing capacity is enhanced, the window lifting device is suitable for heavy lifting windows, and the stability of the motor driving process is improved.

Referring to fig. 3, the driving pulley 220 is synchronously coupled to the driving shaft 310, the driven pulley 230 is synchronously coupled to the driven shaft 320, both the driving shaft 310 and the driven shaft 320 are bearing-coupled to the sprocket mount 210, and the output shaft of the motor is synchronously coupled to the driving shaft 310.

Specifically, the sprocket seat 210 and the motor are fixedly disposed on the external window frame 100, the driving shaft 310 is bearing-connected to the sprocket seat 210, the driven wheel 230 is bearing-connected to the sprocket seat 210, the output shaft of the motor drives the driving shaft 310 to rotate so as to drive the driving wheel 220 to rotate, the bearings are connected to ensure the rotational stability of the driving wheel 220 and the driven wheel 230, the swinging of the movable window sash 120 and the balance member is reduced, and the driving of the driving wheel 220 by the motor is realized. In fact, synchronous rotation can be realized between the driving wheel 220 and the driving shaft 310 through key connection, and similarly, installation can also be realized between the driven shaft 320 and the driving shaft 310 through key connection, and connection can be realized between the driving shaft 310 and the output shaft through a coupler.

Further, the sprocket seat 210 includes a first seat plate 330 and a second seat plate 340 spaced apart from each other in the left-right direction, both ends of the driving shaft 310 and both ends of the driven shaft 320 are rotatably coupled to the first seat plate 330 and the second seat plate 340, respectively, and at least one connection bridge 350 is connected between the first seat plate 330 and the second seat plate 340.

Specifically, the first seat plate 330 and the second seat plate 340 are separately disposed, so that the driving shaft 310 and the driven shaft 320 are positioned at two ends, thereby improving the installation stability, and meanwhile, the space between the first seat plate 330 and the second seat plate 340 realizes the falling of the chain 240, thereby preventing the interference between the chain 240 and the sprocket seat 210, and moreover, the two ends of the connecting bridge 350 are respectively connected with the first seat plate 330 and the second seat plate 340, so that the first seat plate 330 and the second seat plate 340 are relatively fixed, thereby ensuring the parallelism between the first seat plate 330 and the second seat plate 340, and facilitating the installation of the driving shaft 310 and the driven shaft 320.

Actually, there may be a plurality of connecting bridges 350, so as to improve the connecting strength between the first seat plate 330 and the second seat plate 340, as long as the extending position of the connecting bridge 350 is ensured to avoid the dropping position of the chain 240. In addition, in this embodiment, two connecting bridges 350 are connected between the first seat plate 330 and the second seat plate 340, and the two connecting bridges 350 are located between the chains 240 on both sides, so that the chains 240 do not need to penetrate between the two adjacent connecting bridges 350 during installation, thereby facilitating installation of the chains 240.

Further, the sprocket 210 is divided into a base 361 and a cover 362 along the upper and lower halves of the bearing connection between the driving shaft 310 and the driven shaft 320, and the cover 362 is detachably connected to the base 361.

Specifically, the corresponding top surface of base 361 and closing cap 362 all has two semicircle openings, when installation driving shaft 310 and driven shaft 320, overlap the bearing respectively on driving shaft 310 and driven shaft 320 earlier, put into the hole site that corresponds on the base 361 with bearing part one to one after that, at last with closing cap 362 threaded connection on base 361, enclose into two hole sites that are used for installing the bearing between base 361 and the closing cap 362, bearing and this hole site interference fit, realize the installation of bearing, the user realizes the quick installation of bearing through detachable closing cap 362, and the installation effectiveness is improved.

Further, the present invention further includes a distance adjustment structure, wherein the sprocket seat 210 includes a fixed seat and a sliding seat, the driving wheel 220 is rotatably connected to the fixed seat, the driven wheel 230 is rotatably connected to the sliding seat, and the distance adjustment structure can adjust the front and rear positions of the sliding seat to enable the sliding seat to approach or depart from the fixed seat.

Specifically, the fixed seat and the external window frame 100 are relatively fixed, and the distance between the sliding seats can be adjusted by the distance adjusting structure according to the thicknesses of the movable window sash 120 and the positioning window sash, so that the distance between the driving wheel 220 and the driven wheel 230 is changed, the window frame is suitable for different lifting windows, and the applicability and the use range are improved. Correspondingly, the cover 362 needs to be divided into a front part and a rear part according to the fixed seat and the sliding seat, so as to ensure that the fixed seat and the sliding seat can move relatively. Meanwhile, adjacent side walls between the fixed seat and the sliding seat can be vertical smooth planes, so that the fixed seat and the sliding seat can be attached to each other, the distance between the driving shaft 310 and the driven shaft 320 is closer, and the distance adjustment range is improved.

Further, the roll adjustment structure includes screw rod, slide rail and support, and the screw rod extends along the fore-and-aft direction, and the one end swivelling joint of screw rod is on the support, and the other end swivelling joint of screw rod is on deciding the seat, slide and screw rod threaded connection and sliding connection on the slide rail, and the top surface of slide rail is equipped with the thread groove, and the thread groove extends along the fore-and-aft direction, and slide accessible screw threaded connection is on the thread groove.

Specifically, the one end location of screw rod is deciding the seat, the other end passes the slide location on the support, when the screw rod rotates, the slide can be followed the screw rod and be close to towards deciding the seat, perhaps keep away from deciding the seat, realize action wheel 220 and follow the interval adjustment between the driving wheel 230, after the adjustment, the screw passes the slide and stretches into the thread groove, make the slide location on the slide rail, realize the slide and decide the relative fixation between the seat, make at the in-process that promotes movable sash 120, reduce rocking from driving wheel 230, and stability is improved.

It should be noted that the thread groove is long, a plurality of convex strips extending along the extending direction of the groove are arranged on the inner side wall of the groove, the convex strips can be meshed with the threads of the screw, a user can adjust the position of the sliding seat by manually twisting the screw rod, the screw rod is then used for penetrating into the thread groove to achieve positioning, and in addition, the motor can be used for driving the screw rod to achieve automatic adjustment. And the screw rod can be connected to the fixed seat through a bearing or other rotating connection modes, so that the position of the connecting point is unchanged, and the mutual coincidence of the rotation axis of the screw rod and the central axis of the screw rod is ensured.

Moreover, the present invention further provides a lifting window, which includes a window frame 100, a fixed sash 130, and the lifting structure 110, wherein the fixed sash 130 is fixedly connected to the window frame 100 and covers the lower half space of the window frame 100, and the movable sash 120 is connected to the window frame 100 in a vertically sliding manner.

Specifically, the motor drives the driving wheel 220 to rotate, so that the movable window sash 120 moves upwards and closes the window frame 100, or the movable window sash 120 moves downwards and opens the window frame 100, which is convenient for ventilation and use, and meanwhile, the movable window sash 120 is slidably connected to the window frame 100, so that the attractiveness and the activity stability of the movable window sash 120 are improved. In fact, the fixed window sash 130 may be fixed in the upper half space of the window frame 100, and the movable window sash 120 may be opened or closed in the lower half space.

Further, referring to fig. 4, the window frame 100 includes a top frame 201 and a side frame 401, the sprocket 210 and the motor are both disposed in the top frame 201, the side frame 401 is partitioned by a first cavity 410 and a second cavity 420 along the front-back direction, two ends of the chain 240 respectively hang into the first cavity 410 and the second cavity 420 from the top frame 201, and the movable window sash 120 is slidably connected to the side frame 401.

Specifically, motor and sprocket seat 210 are installed on top frame 201, conveniently carry movable sash 120, and it has first cavity 410 and second cavity 420 to separate in the side frame 401, the upper end opening of first cavity 410 and second cavity 420 all communicates in top frame 201 inner chamber, every side frame 401 corresponds a hoisting unit, make the chain 240 both ends in a hoisting unit can hang down from sprocket seat 210 department direct subregion, prevent that movable sash 120 and balancing member from producing the interference, and simultaneously, second cavity 420 can restrict balancing member's home range, first cavity 410 can provide sliding connection's space for movable sash 120, reduce and rock, improve life and stability in use.

Furthermore, the present invention further comprises an electric screen window, the upper half space of the window frame 100 is divided into an outdoor side 142 and an indoor side 141 along the front and rear positions, the movable window sash 120 is located on the outdoor side 142, the top of the fixed window sash 130 is connected with a beam 131, and the beam 131 extends backwards.

The electric screen window includes a driving member, a roller 251, a screen 252, and a lower rail 253, wherein the roller 251 is located at the top of the indoor side 141 and is connected to the window frame 100 along the left-right direction, the screen 252 is wound around the roller 251, the lower rail 253 is connected to the lower side of the screen 252, and the driving member can rotatably drive the roller 251, so that the screen 252 gradually covers the indoor side 141 until the lower rail 253 abuts against the beam 131 downward.

Specifically, the driving element may be a rotary driving element such as a motor, and after the user lowers the movable window sash 120, the winding drum 251 may be driven by the driving element to rotate, so that the lower end of the screen 252 wound on the winding drum 251 and the lower rail 253 gradually move downward, and the screen 252 gradually covers the space of the indoor side 141 until the lower rail 253 abuts against the cross beam 131, thereby completing complete shielding of the indoor side 141.

The upper half space of the window width is shielded by the electric screen window, ventilation is realized, functionality is improved, meanwhile, the electric screen window and the movable window sash 120 are respectively positioned on the indoor side 141 and the outdoor side 142, interference between the indoor side 141 and the outdoor side 142 is prevented, meanwhile, a user can conveniently control and disassemble the electric screen window, use experience of the user is improved, the cross beam 131 covers the top of the fixed window sash 130, installation stability of the fixed window sash 130 is improved, attractiveness of the fixed window sash 130 is improved, meanwhile, a limiting structure for the movable window sash 120 is conveniently arranged on the cross beam 131, for example, a limiting hook with an opening facing downwards is arranged on the bottom surface of the front end of the cross beam 131, a positioning hook opposite to the limiting hook is arranged on the bottom side of the movable window sash 120, the positioning hook can be clamped in the limiting hook to limit the upwards moving position of the movable window sash 120, and the part where the positioning hook and the limiting hook are buckled is provided with a buffering material such as rubber, so that window closing noise is reduced. In addition, the lower cross beam 253 can be connected to the side frame 401 in a sliding mode, so that the yarn curtain 252 can be pulled, and the flatness of the yarn curtain 252 is guaranteed.

In fact, the left and right ends of the movable window sash 120 are slidably connected to the two side frames 401, specifically, the opposite side walls of the side frames 401 are provided with vertical sliding grooves, the sliding grooves are communicated with the first chambers 410, and two sides of the movable window sash respectively penetrate through the corresponding sliding grooves and enter the corresponding first chambers 410.

Furthermore, with reference to fig. 4, rollers 430 are disposed on both sides of the movable sash window to reduce sliding friction when the movable sash window moves up and down, and a dustproof rubber strip is disposed on the inner side wall of the sliding groove and abuts against both sides of the movable sash window to reduce dust entering, prevent collision between the movable sash window and the sliding groove, and reduce noise and abrasion.

Further, a first limiting member 440 and a second limiting member 450 are disposed in the first chamber 410, an anti-swing space 460 is defined between the first limiting member 440 and the second limiting member 450, and the roller 430 is located in the anti-swing space 460, so as to prevent the roller 430 from swinging, and reduce the swinging of the movable sash window in the left-right direction and the front-back direction.

Further, the first limiting member 440 and the second limiting member 450 are both arc-shaped and surround the opposite side of the roller 430, so that the cost is reduced, and the front, back, left and right of the roller 430 are limited.

In this embodiment, two ends of the winding drum 251 are connected to the two side frames 401, the position of the winding drum 251 corresponds to the position of the second cavity 420 of the side frame 401, and the winding drum 251 is prevented from interfering with the movable window sash 120, meanwhile, the top frame 201 is detachably and rotatably connected with an access cover, the access cover covers the winding drum 251, and when the electric screen window part needs to be maintained, disassembled and assembled, the access cover is lifted or detached.

In fact, the top surface of the movable window sash 120 and the bottom surface of the lower rail 253 may be provided with a cushion pad, such as a rubber pad, to reduce noise.

In addition, the balancing member located in the second chamber 420 may be a counterweight rod, an upper end of the counterweight rod is connected to a rear end of the chain 240, so as to balance a torque force borne by the motor, reduce a load of the motor, and improve output stability and a service life of the motor, and the balancing member may also include a pull rope, a movable pulley, and a tension spring, one end of the pull rope is connected to the chain 240, and the other end of the pull rope passes downward around the movable pulley, and then extends upward to be connected to the top side of the window frame 100, an upper end of the tension spring is connected to the movable pulley, and a lower end of the tension spring is connected to the bottom of the window frame 100. In practice, the weight bar may be a metal material such as an iron bar.

The extension spring can provide damping effect when the activity window moves about from top to bottom to reduce the load of motor when opening the operation or braking, it is specific:

when the window needs to be opened, the motor drives the driving wheel 220 to drive the pulling end of the chain 240 to move downwards, the movable end of the pull rope moves upwards along with the damping end, the movable pulley moves upwards gradually, the stretching length of the tension spring is lengthened gradually, in the process that the movable window sash 120 moves downwards, the tension force of the damping end of the chain 240 provided by the tension spring is increased gradually, when the motor brakes, the motor needs to provide a reverse force larger than that of the movable window sash 120 to reduce the moving speed of the movable window sash 120 and achieve the braking effect, the torque force required by the motor is increased at the moment, and the tension spring which is stretched gradually provides a certain acceleration for the other side of the motor, so that the torque force borne by the motor can be balanced.

When the window needs to be closed, the motor rotates reversely to drive the pulling end of the chain 240 to move upwards, the movable end of the pull rope moves downwards, the movable pulley moves downwards, the tension spring retracts gradually, in the process that the movable window sash 120 moves upwards, the tension force provided by the tension spring to the damping end of the chain 240 is reduced gradually, when the motor brakes, in order to ensure that the movable window sash 120 stops moving under the action of gravity, the tension force required to the movable window sash 120 is reduced, the tension spring retracts gradually to reduce the tension force to the motor, and the burden of the motor can be reduced.

Further, the balance member may be actually provided outside the window frame 100 without considering the beauty.

While the preferred embodiments of the present invention have been described in detail, it should be understood that the invention is not limited to those precise embodiments, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope or spirit of the invention as defined in the appended claims.

Claims (10)

1. A lifting structure, characterized in that: including two left and right spaced apart lifting units, the lifting unit includes:

a sprocket seat (210) in which a driving wheel (220) and a driven wheel (230) are sequentially arranged in a front-rear direction, wherein rotation axes of the driving wheel (220) and the driven wheel (230) both extend in a left-right direction;

a chain (240) which is lapped on the top sides of the driving wheel (220) and the driven wheel (230), and the front end and the rear end of the chain (240) drop;

a motor rotationally driving the drive pulley (220).

2. A lifting structure according to claim 1, characterized in that: still include the balance member, the balance member includes stay cord, movable pulley and extension spring, the one end of stay cord is connected the rear end of chain (240), the other end of stay cord is walked around the movable pulley downwards and is extended up, the upper end of extension spring is connected the movable pulley, the lower extreme of extension spring the other end of stay cord with sprocket seat (210) relatively fixed.

3. A lifting structure according to claim 1, characterized in that: the chain balancing device further comprises a balancing component which is a counterweight rod, and the upper end of the counterweight rod is connected with the rear end of the chain (240).

4. A lifting structure according to claim 1, characterized in that: the driving wheel (220) is connected driving shaft (310) in step, driven wheel (230) is connected driven axle (320) in step, driving shaft (310) driven axle (320) equal bearing connect in sprocket seat (210), sprocket seat (210) including control first bedplate (330) and second bedplate (340) that the interval set up, the both ends of driving shaft (310) the both ends of driven axle (320) are equallyd divide do not swivelling joint in first bedplate (330) with on second bedplate (340).

5. A lifting structure according to claim 1, characterized in that: still include roll adjustment structure, sprocket seat (210) are including the seat and the slide of deciding that the front and back branch was established, action wheel (220) swivelling joint in decide on the seat, from driving wheel (230) swivelling joint in on the slide, roll adjustment structure is adjustable the front and back position of slide.

6. A hoisting structure as claimed in claim 5, characterized in that: the distance adjusting structure comprises a screw rod and a sliding rail, a threaded passage extending from front to back is formed in the sliding seat, the front end of the screw rod is rotatably connected to the fixed seat, the rear end of the screw rod is in threaded fit with the threaded passage and penetrates out of the threaded passage, and the sliding seat is connected to the sliding rail in a sliding mode.

7. A lifting window comprising a frame (100), a stationary sash (130), a movable sash (120), a lifting structure (110) according to any one of claims 1 to 6, characterized in that: the fixed window sash (130) is fixedly connected in the window frame (100), and the movable window sash is connected in the window frame (100) in a vertically sliding mode.

8. A lifting window according to claim 7, wherein: the window frame (100) includes top frame (201) and side frame (401), two side frame (401) are connected the left and right sides of top frame (201), sprocket seat (210) with the motor all sets up in top frame (201), it has first cavity (410) and second cavity (420) to separate along the fore-and-aft direction in side frame (401), the both ends of chain (240) are respectively certainly hang into in top frame (201) first cavity (410) with in the second cavity (420), activity casement (120) sliding connection in side frame (401).

9. A lifting window according to claim 7, wherein: the window frame comprises a window frame body (100), and is characterized by further comprising an electric screen window, wherein the window frame body (100) is divided into an outdoor side (142) and an indoor side (141) along the front and back positions, the movable window sash (120) is located on the outdoor side (142), the top of the fixed window sash (130) is connected with a cross beam (131), the cross beam (131) extends backwards, the electric screen window comprises a driving piece, a winding drum (251), a screen curtain (252) and a lower cross beam (253), the winding drum (251) is located on the top of the indoor side (141) and connected to the window frame body (100) along the left and right directions, the screen curtain (252) is wound on the winding drum (251), the lower cross beam (253) is connected with the lower side edge of the screen curtain (252), and the driving piece can rotatably drive the winding drum (251) to enable the lower cross beam (253) to downwards abut against the cross beam (131).

10. A lifting window according to claim 9, wherein: still include the balance member, the balance member includes stay cord, movable pulley and extension spring, the rear end of chain (240) is connected to the one end of stay cord, the other end of stay cord is walked around the movable pulley downwards and is extended upward and connect window frame (100), the upper end of extension spring is connected the movable pulley, the lower extreme of extension spring is connected window frame (100).

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