CN219672540U - Self-positioning lifting device and shutter - Google Patents

Abstract

The utility model provides a self-positioning lifting device which is suitable for a shutter, wherein the shutter comprises a winding device and a plurality of blades which are uniformly distributed from top to bottom and are equidistant, a lifting line capable of being retracted and released is arranged in the winding device, and the self-positioning lifting device comprises a resistance mechanism and an elastic positioning mechanism; when the blade is pulled downwards, the resistance mechanism can clamp the lifting line to form resistance of downward movement of the blade, and the resistance is smaller than the pulling force for pulling the blade so as to pull the blade; pushing the blade upward to cause the resistance mechanism to loosen the lifting line so as to facilitate folding the blade upward; the elastic positioning mechanism is linked with the winding device, so that the blade can be positioned at any position. The utility model also provides a shutter which is convenient to operate, can position the blades at any position and can be aligned smoothly at the two ends.

Description

Self-positioning lifting device and shutter

Technical Field

The utility model relates to the technical field of shutters, in particular to a self-positioning lifting device and a shutter.

Background

The shutter is installed on a window and is generally used for shading and ventilating indoors and outdoors. Different from the soft texture of the curtain, the shutter blades are made of wood, glass, aluminum alloy and other materials, so that the shutter blades can resist the corrosion of sunlight, wind, rain and dust and are easy to clean. Compared with a curtain, the shutter can resist ultraviolet radiation and can regulate indoor light in the aspect of sunshade; in ventilation, the fixed installation of the shutter and the thick texture can realize better ventilation; in other aspects, the shutter can more effectively ensure the privacy of the home; in addition, when the shutter is completely closed, the shutter is just like a window, and the effects of sound insulation and heat insulation can be achieved. The shutter is increasingly used in families, offices and other occasions.

In the prior art, the blind is generally provided with a pull rope, the blades of the blind can be manually folded to a certain height by pulling the pull rope, and then the pull rope is clamped in a driving device above the blind by operating the pull rope, so that the blades of the blind can be fixed on the certain height, namely, the blades are fixed by fixing the pull rope. When the blades are required to be put down, the pull rope is operated to unlock the clamping of the driving device to the pull rope, the shutter blades can be automatically put down due to self gravity, and then the shutter blades are put down to a proper position and then are fixed on a certain position by operating the pull rope. The operation is complicated and is not humanized; in addition, the folded blind window may be blown off due to an external force such as wind blowing or the like acting on the pulling rope, which is not safe and reliable. The existing blind without pull ropes is generally provided with an electric device, and the lifting of the blind blades is controlled electrically. However, the addition of the electric device increases the cost and is more troublesome to maintain and repair.

Accordingly, it is necessary to provide a self-positioning lift device that can facilitate the lifting operation of the blind blades and can position the blades at any position.

Disclosure of Invention

The utility model aims to provide a self-positioning lifting device which can enable the lifting operation of a shutter blade to be more convenient and can position the blade at any position.

Another object of the present utility model is to provide a blind having the above self-positioning lifting device.

In order to achieve the above object, the present utility model provides a self-positioning lifting device, which is suitable for a blind, the blind comprises a winding device and a plurality of blades uniformly distributed from top to bottom at equal intervals, a lifting wire capable of being retracted and extended is arranged in the winding device, and the self-positioning lifting device comprises:

the resistance mechanism is wound by the lifting wire and connected with a plurality of blades, and the resistance mechanism clamps the lifting wire by pulling the blades downwards to form resistance of downward movement of the blades, wherein the resistance is smaller than the pulling force of pulling the blades; pushing the blade upward to cause the resistance mechanism to loosen the lifting line so as to facilitate folding the blade upward;

the elastic positioning mechanism is linked with the winding device and comprises a first winding component, a second winding component and an elastic piece wound on the first winding component and/or the second winding component, the blade is lifted and moved to enable the winding device to rotate so as to wind and unwind a lifting wire and drive the first winding component and the second winding component to rotate, the elastic piece is wound on the first winding component or wound on the second winding component, and the elastic force of the elastic piece wound on the second winding component is always equal to the gravity of the blade stacked at the lowest position so that the blade can be positioned at any position.

Preferably, the resistance mechanism comprises a fixed seat, a movable assembly and a pulley assembly, wherein the movable assembly and the pulley assembly are arranged in the fixed seat, one end of the movable assembly is rotatably arranged below the pulley assembly, and the lifting wire is wound on the movable assembly; by pulling down the lifting line, one end of the movable assembly, which is close to the pulley assembly, is rotated to be close to the pulley assembly and matched with the pulley assembly to clamp the lifting line; the blade is lifted upward to cancel the force acting on the lift wire to reset the movable assembly.

Preferably, the movable assembly comprises a mounting frame, a first roller and a second roller, wherein the first roller and the second roller are arranged on the mounting frame, the first roller is arranged at one end of the mounting frame, and the second roller is arranged at the other end of the mounting frame; one end of the mounting frame, which is close to the first roller, is rotatably arranged on the fixing seat, and the first roller is positioned below the pulley assembly; the pulley assembly comprises a first pulley and a second pulley, the first pulley is positioned on one side of the first roller, and the second pulley is positioned on the other side of the first roller; the lifting line sequentially winds the first roller and the second roller, and the second roller is stressed to enable the mounting frame to rotate until the first roller is close to the pulley assembly.

Preferably, the winding device is provided with a first gear, the first winding assembly comprises a second gear meshed with the first gear, and the second winding assembly is provided with a third gear meshed with the second gear; the second gear is meshed with the first gear and the third gear respectively, so that when the winding device rotates to collect and pay-off the lifting wire, the first winding assembly and the second winding assembly synchronously rotate, and the elastic sheet is wound on the first winding assembly or the second winding assembly.

Preferably, the upper end and the lower end of the winding device are respectively provided with a first gear, the upper end and the lower end of the first winding assembly are respectively provided with a second gear, and the two second gears are respectively meshed with the corresponding first gears.

Preferably, the first winding assembly comprises a first winding wheel, the second winding assembly comprises a second winding wheel, one end of the elastic sheet is fixed on the first winding wheel, the other end of the elastic sheet is fixed on the second winding wheel, and the elastic sheet is elastically wound on the first winding wheel and/or the second winding wheel.

The utility model also provides a shutter, which comprises a mounting shell, a winding device and a blade assembly, wherein the winding device is mounted in the mounting shell, the blade assembly is mounted below the mounting shell, the blade assembly comprises a plurality of blades which are uniformly distributed from top to bottom and equidistantly, the shutter further comprises the two self-positioning lifting devices, the self-positioning lifting devices are mounted in the mounting shell, and the self-positioning lifting devices comprise at least two resistance mechanisms positioned at two sides of the winding device.

Preferably, the winding device comprises a winding assembly and a guiding assembly, wherein the winding assembly comprises a double-layer winding wheel, and the double-layer winding wheel comprises a first winding part and a second winding part which are overlapped; the guide assembly comprises a double-wire coupling wire arrangement device, and the double-wire coupling wire arrangement device comprises a first wire part and a second wire part which are coaxially arranged; the first wire part and the first winding part are positioned on the same horizontal plane, and the second wire part and the second winding part are positioned on the same horizontal plane; by means of the matching of the double-layer reel and the double-line coupling wire arrangement device, the consistency of the winding of the lifting wire in the first winding part and the winding of the lifting wire in the second winding part are enhanced, and the balance of the blade assembly is kept in the lifting process.

Preferably, the guide assembly further comprises a first guide wheel and a second guide wheel which are positioned at two sides of the winding assembly, the lifting wire is simultaneously led out from the first winding part and the second winding part, and the lifting wire in the first winding part sequentially winds the first wire part and the first guide wheel, then passes through a resistance mechanism and is sequentially connected with a plurality of blades; the lifting wire in the second winding part sequentially winds the second wire part and the second guide wheel, then passes through a resistance mechanism and is sequentially connected with a plurality of blades.

Preferably, the device further comprises a frequency modulation device arranged in the installation shell, the frequency modulation device comprises a frequency modulator, a frequency modulation rod and a stirring assembly, the stirring assembly is provided with a connecting wire connected with the blade assembly, both sides of the winding device are provided with stirring assemblies, the frequency modulator is arranged on one side of the winding device and is connected with the two stirring assemblies through the frequency modulation rod, the frequency modulator is driven to drive the frequency modulation rod to drive the two stirring assemblies to rotate by a preset angle, and then the blade assembly is driven to rotate by the preset angle.

After the technical scheme is adopted, the shutter comprises a mounting shell, a winding device, a self-positioning lifting device and a frequency modulation device are arranged in the mounting shell, and a blade assembly is arranged below the mounting shell. The self-positioning lifting device comprises a resistance mechanism and an elastic positioning mechanism. The lift line in the winding device passes through the resistance mechanism of the self-positioning lifting device and is connected with the blade assembly, when the blade is pulled downwards, the blade acts on the resistance mechanism through the lift line, so that the resistance mechanism can clamp the lift line to increase the resistance of the downward pulling of the blade, and the resistance mechanism can loosen the lift line when the blade is stacked upwards, so that the blade is folded upwards. On the other hand, the elastic positioning mechanism is linked with the winding device and comprises a first winding component, a second winding component and an elastic piece wound on the first winding component and/or the second winding component, one end of the elastic piece is connected with the first winding component, and the other end of the elastic piece is connected with the second winding component. The blade is lifted and lowered to enable the winding device to rotate so as to retract and release lifting wires, and meanwhile the first winding assembly and the second winding assembly are driven to rotate, so that the elastic sheet is wound towards the first winding assembly or wound towards the second winding assembly. The elastic force of the elastic sheet wound on the second winding assembly is always equal to the gravity of the lowermost stacked blades, so that the blades can be positioned at any positions. In still another aspect, the winding assembly in the winding device includes a first winding portion and a second winding portion stacked together, and the first winding portion and the second winding portion rotate synchronously, so that lifting wires connected to two sides of the blade can lift synchronously. The winding device further comprises a two-wire coupling winding displacement device with two wire parts, wherein the first wire part and the second wire part are coaxially arranged and simultaneously rotate. The first wire part and the first winding part are at the same height, and the second wire part and the second winding part are at the same height. The double-wire coupling winding displacement device and winding assembly matched structure can enable the diameters of outer rings of the first winding part and the second winding part to be the same when winding and unwinding lifting wires, and therefore the phenomenon that the heights of two ends of the blade assembly are different can be effectively avoided. In yet another aspect, the frequency modulation device can conveniently adjust the angle of the blade assembly to make use more comfortable. According to the shutter disclosed by the utility model, the self-positioning lifting device is arranged, so that the lifting operation of the blade is more convenient, the blade can be positioned at any position, and the two ends of the blade assembly can be better kept on the same horizontal height due to the structure of the winding device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a block diagram of a blind according to an embodiment of the present utility model.

Fig. 2 is an internal structural view of the blind of fig. 1 with the top-mounted housing removed.

FIG. 3 is a block diagram of the resistance mechanism of FIG. 1.

Fig. 4 is a structural view of another state of fig. 3.

FIG. 5 is a block diagram of the resistance mechanism of FIG. 3 with the anchor removed.

Fig. 6 is a structural view of the winding device of fig. 1 mated with an elastic positioning mechanism.

Fig. 7 is an internal structural view of fig. 6.

Fig. 8 is a block diagram of the spring positioning mechanism of fig. 7.

Fig. 9 is a structural view of the winding assembly of fig. 7.

Fig. 10 is a block diagram of the two-wire coupling bus bar of fig. 7.

Fig. 11 is a block diagram of the winding device, the self-positioning lifter and the fm device of fig. 2.

Reference numerals illustrate:

1000. a shutter; 1001. a lifting line; 1002. a connecting wire; 1003. a mounting shell;

100. a self-positioning lifting device; 10. a resistance mechanism; 11. a fixing seat; 12. a movable assembly; 121. a mounting frame; 1211. a rotating part; 1212. a wiring position; 122. a first roller; 123. a second roller; 13. a pulley assembly; 131. a first pulley; 132. a second pulley; 133. a concave portion; 20. an elastic positioning mechanism; 21. a first winding assembly; 211. a first reel; 212. a second gear; 213. a fixed shaft; 22. a second winding assembly; 221. a second reel; 222. a third gear; 23. a spring plate;

200. a winding device; 210. a fixed bracket; 30. a winding assembly; 301. a double-layer reel; 31. a first winding part; 32. a second winding part; 33. a first gear; 40. a guide assembly; 41. a two-wire coupling wire arrangement device; 411. a first wire portion; 412. a second wire part; 413. a rotating shaft; 42. a first guide wheel; 43. a second guide wheel;

300. a frequency modulation device; 310. a frequency modulator; 320. the assembly is stirred; 330. a frequency modulation rod; 340. a connecting seat;

400. a blade assembly; 410. and (3) a blade.

Detailed Description

In order to describe the technical content and constructional features of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.

Referring to fig. 1, 2, 6 and 7, the present utility model further provides a shutter 1000, including a mounting housing 1003, a winding device 200, a blade assembly 400, a frequency modulation device 300 and a self-positioning lifting device 100. The winding device 200, the frequency modulation device 300 and the self-positioning elevating device 100 are fitted to each other and mounted in the mounting housing 1003. The blade assembly 400 is mounted below the mounting housing 1003, the blade assembly 400 comprising a number of blades 410 evenly and equidistantly distributed from top to bottom. The self-positioning lifting device 100 comprises at least two resistance mechanisms 10 positioned at two sides of the winding device 200, and the self-positioning lifting device 100 further comprises an elastic positioning mechanism 20 linked with the winding device 200. Specifically, a retractable lifting wire 1001 is provided in the winding device 200, and the lifting wire 1001 winds around the resistance mechanism 10 and is connected to the plurality of blades 410. By pulling down the blade 410 so that the resistance mechanism 10 clamps the lifting line 1001 to form a resistance force for downward movement of the blade 410, the resistance force is smaller than the pulling force for pulling the blade 410, so that the blade 410 can be pulled down continuously without being lowered automatically due to the gravity of the blade 410. In addition, the blade 410 is pushed upward to activate the resistance mechanism 10 to release the lift wire 1001, thereby canceling the resistance of the resistance mechanism 10 to the blade assembly 400 to facilitate folding up the blade 410. That is, the resistance mechanism 10 increases the resistance of the blade assembly 400 during the descent process, so as to prevent the blade assembly 400 from rapidly sliding down due to the self weight; at the same time, the resistance mechanism 10 reduces the resistance of the blade assembly 400 during the ascent, thereby enabling more convenient folding up of the blade assembly 400. Simple structure, reasonable in design, convenient operation is suitable for extensive use widely. On the other hand, the elastic positioning mechanism 20 is coupled to the winding device 200, and the elastic positioning mechanism 20 includes a first winding assembly 21, a second winding assembly 22, and a spring piece 23 wound around the first winding assembly 21 and/or the second winding assembly 22. The blade 410 moves up and down to rotate the winding device 200 to wind up and down the lifting wire 1001 and drive the first winding assembly 21 and the second winding assembly 22 to rotate, so that the elastic sheet 23 winds up to the first winding assembly 21 or winds up to the second winding assembly 22. The elastic force of the elastic sheet 23 wound on the second winding assembly 22 is always equal to the gravity of the lowermost stacked blades 410, so that the blades 410 can be positioned at any position.

It can be appreciated that the resistance mechanism 10 can provide a certain resistance to the lifting wire 1001 when the blade assembly 400 is pulled down, meanwhile, the elastic positioning mechanism 20 is linked with the winding assembly 30 in the winding device 200, and the winding assembly 30 receives and releases the lifting wire 1001 when the blade assembly 400 is lifted up and down and synchronously drives the elastic positioning mechanism 20 to rotate. The elastic sheet 23 has a certain elastic force, and the elastic force of the whole elastic sheet 23 is equal to the downward gravity of the blade assembly 400 through calculation and test. Depending on the winding direction of the winding assembly 30, the elastic force of the elastic sheet 23 wound on the first winding assembly 21 or the second winding assembly 22 is equal to the gravity of the lowermost stacked blades 410. Since the stretched out blade 410 is primarily connected to the tuning device 300 by the connection 1002, gravity is primarily applied to the connection 1002. While the folded blade 410 is connected to the resistance mechanism 10 and the winding assembly 30 mainly by the lifting wire 1001, the gravity of the folded blade 410 mainly acts on the lifting wire 1001. The elastic force of the elastic sheet 23 wound around the first winding assembly 21 or the second winding assembly 22 is always equal to the gravity of the lowermost stacked blades 410, so that the blades 410 can be positioned at any position. In the present embodiment, the elastic force of the elastic sheet 23 around the second winding assembly 22 is always equal to the gravity of the lowermost stacked blades 410.

Referring to fig. 3-5, in some alternative embodiments, the resistance mechanism 10 includes a fixed base 11, and a movable assembly 12 and a pulley assembly 13 disposed within the fixed base 11. One end of the movable assembly 12 is rotatably mounted below the pulley assembly 13, the movable assembly 12 includes a mounting frame 121, and a rotating portion 1211 rotatably engaged with the fixing seat 11 is disposed at one end of the mounting frame 121. The lifting wire 1001 is wound on the movable assembly 12, and a wire position 1212 for guiding is provided on the mounting frame 121 of the movable assembly 12, so that the lifting wire 1001 can better travel the wire. By pulling down on the lift wire 1001, i.e., pulling down on the blade 410, the end of the movable member 12 near the pulley assembly 13 is rotated to be near the pulley assembly 13 and cooperates with the pulley assembly 13 to clamp the lift wire 1001. The blade 410 is lifted upward to cancel the force acting on the lift line 1001 to reset the movable assembly 12. Specifically, the movable assembly 12 includes a mounting frame 121, and a first roller 122 and a second roller 123 disposed on the mounting frame 121, where the first roller 122 is disposed at one end of the mounting frame 121, and the second roller 123 is disposed at the other end of the mounting frame 121. One end of the mounting frame 121, which is close to the first roller 122, is rotatably mounted on the fixing seat 11, and the first roller 122 is located below the pulley assembly 13. The pulley assembly 13 includes a first pulley 131 and a second pulley 132, the first pulley 131 being located at one side of the first roller 122, and the second pulley 132 being located at the other side of the first roller 122. The lifting line 1001 sequentially winds the first roller 122 and the second roller 123, and the second roller 123 is stressed, so that the mounting frame 121 rotates until the first roller 122 approaches the pulley assembly 13.

Referring to fig. 3 to 5, in some alternative embodiments, as shown in fig. 3, the mounting frame 121 of the movable assembly 12 is not stressed, and one end of the second roller 123 protrudes upward from the fixing base 11, so that the mounting frame 121 can rotate around the rotating portion 1211. The first roller 122 slides away from the pulley assembly 13 along with the self gravity, so that the gap between the first roller 122 and the pulley assembly 13 is larger, and in this case, the first roller 122 and the pulley assembly 13 cannot clamp the lifting line 1001, so that the lifting line 1001 can freely move; that is, when the blade assembly 400 is supported to fold upwards, the blade assembly 400 can be folded more smoothly and conveniently. On the other hand, as shown in fig. 4, one end of the second roller 123 of the movable assembly 12 is pulled downward by the lifting line 1001, so that the rotating portion 1211 of the mounting frame 121 rotates, so that the first roller 122 slides close to the pulley assembly 13 to clamp the lifting line 1001, and a certain resistance is given to the lifting line 1001, so that the blade assembly 400 is prevented from sliding down directly and rapidly under the influence of self gravity. Wherein, the first pulley 131 and the second pulley 132 are provided with concave parts 133 which are concave inwards, and the lifting line 1001 is routed from the concave parts 133. Due to the concave part 133, the first roller 122, the first pulley 131 and the second pulley 132 are matched with each other to clamp the lifting line 1001, so that the lifting line 1001 is not directly clamped, and only a certain resistance is given to the lifting line 1001, so that the lifting line 1001 and the blade 410 can be pulled down continuously, the blade 410 can not drop down rapidly due to self gravity, and the retraction height of the blade assembly 400 is convenient to adjust. Simple structure and reasonable design.

Referring to fig. 6 to 8, in some alternative embodiments, the winding device 200 is provided with a first gear 33. The first winding assembly 21 includes a second gear 212 engaged with the first gear 33, and a third gear 222 engaged with the second gear 212 is provided on the second winding assembly 22. When the winding device 200 rotates to wind up and down the lifting wire 1001, the first winding assembly 21 and the second winding assembly 22 can synchronously rotate with the winding device 200 by the second gear 212 respectively engaging with the first gear 33 and the third gear 222, so that the elastic sheet 23 winds up to the first winding assembly 21 or winds up to the second winding assembly 22. It can be appreciated that the second gear 212 is meshed with the first gear 33 and the second gear 212 on two sides respectively, so that the winding assembly 30 can synchronously drive the first winding assembly 21 and the second winding assembly 22 to rotate when the winding and unwinding lifting wire 1001 rotates, and further, the elastic sheet 23 is wound towards the first winding assembly 21 or the second winding assembly 22. So that the elastic force of the elastic sheet 23 wound on the second winding assembly 22 is always equal to the gravity of the lowermost stacked blade 410.

Referring to fig. 6 to 8, in some alternative embodiments, the winding device 200 is provided with a first gear 33 at the upper end and a second gear 212 at the lower end, and the first winding assembly 21 is also provided with a second gear 212 at the upper end and the lower end, respectively, and the two second gears 212 are meshed with the corresponding first gears 33, respectively. Wherein the second winding assembly 22 may be provided with only one third gear 222 or two third gears 222 engaged with two second gears 212. Specifically, the first winding assembly 21 includes a first reel 211, and the second winding assembly 22 includes a second reel 221. The spring force positioning mechanism, the winding assembly 30 and the guiding assembly 40 are all installed in the fixing bracket 210. The first winding wheel 211 and the second winding wheel 221 may be respectively installed in the fixed bracket 210 through a fixed shaft 213, and the first winding wheel 211 and the second winding wheel may rotate around the fixed shaft 213 to wind up the elastic sheet 23. One end of the elastic piece 23 is fixed on the first winding wheel 211, the other end of the elastic piece 23 is fixed on the second winding wheel 221, and the elastic piece 23 is elastically wound on the first winding wheel 211 and/or the second winding wheel 221.

Referring to fig. 6, 7, 9 and 10, in some alternative embodiments, the winding device 200 includes a winding assembly 30 and a guide assembly 40. Wherein, the winding assembly 30 comprises a double-layer winding wheel 301, and the double-layer winding wheel 301 is in an integral structure. The dual-layer reel 301 includes a first winding portion 31 and a second winding portion 32 stacked, the first winding portion 31 being configured to wind up the lift wire 1001 on one side, and the second winding portion 32 being configured to wind up the lift wire 1001 on the other side. In some embodiments, due to the larger area of the entire shutter 1000, it may be necessary to provide more winding portions for the winding assembly 30, i.e., more layers of reels, or more than one dual-layer reel 301, to pay out more lift wires 1001 connected to the shutter 1000, so that the shutter 1000 can be lifted more smoothly. Wherein, a lifting wire 1001 is correspondingly provided with a resistance mechanism 10 so as to be capable of better winding and unwinding wires. It can be appreciated that the first winding portion 31 and the second winding portion 32 of the dual-layer reel 301 rotate simultaneously, so that the lifting wires 1001 connected to two sides of the shutter 1000 can be retracted simultaneously, so as to avoid uneven lifting caused by asynchronous lifting of two ends of the shutter 1000. On the other hand, the guide assembly 40 includes a two-wire coupling wire guide 41, and the two-wire coupling wire guide 41 includes a first wire guide 411 and a second wire guide 412 coaxially disposed. The first wire portion 411 and the first winding portion 31 are located on the same horizontal plane, and the second wire portion 412 and the second winding portion 32 are located on the same horizontal plane. The first wire part 411 is used to guide the lifting wire 1001 coming out of the first winding part 31, and the second wire part 412 is used to guide the lifting wire 1001 coming out of the second winding part 32. The first wire guide 411 and the first winding part 31 are on the same horizontal plane, and the second wire guide 412 and the second winding part 32 are on the same horizontal plane, so that lifting wires 1001 on two sides can be more synchronously retracted and released, the phenomenon that the existing shutter 1000 is not synchronous in winding displacement overlapping is better solved, and the whole of two ends of the shutter 1000 is more stable. In this embodiment, the first wire portion 411 and the second wire portion 412 may be traction guide wheels disposed on the rotating shaft 413, and the rotating shaft 413 drives the first wire portion 411 and the second wire portion 412 to rotate synchronously, so that the windings in the first winding portion 31 and the second winding portion 32 are kept uniform.

Referring to fig. 6, 7, 9 and 10, in some alternative embodiments, the guide assembly 40 further includes a first guide wheel 42 and a second guide wheel 43 on opposite sides of the winding assembly 30. The first guide wheel 42 is on the same horizontal plane as the first winding portion 31 and the first wire portion 411, and the second guide wheel 43 is on the same horizontal plane as the second winding portion 32 and the second wire portion 412. Specifically, the lifting wire 1001 is simultaneously led out from the first winding portion 31 and the second winding portion 32, and the lifting wire 1001 in the first winding portion 31 sequentially winds around the first wire portion 411, the first guide wheel 42, then passes through a resistance mechanism 10 and is sequentially connected to the plurality of blades 410. The lifting wire 1001 in the second winding portion 32 sequentially winds the second wire portion 412, the second guide wheel 43, and then passes through a resistance mechanism 10 and is sequentially connected to the plurality of blades 410. Through the cooperation of wire winding subassembly 30 and direction subassembly 40 for whole coiling mechanism 200 can better solve the uneven phenomenon in shutter 1000 both ends, and overall layout is reasonable. It will be appreciated that by the cooperation of the dual-layer reel 301 and the two-wire coupling traverse 41, the first wire guide 411 and the first wire guide 31 are on the same horizontal plane, the second wire guide 412 and the second wire guide 32 are on the same horizontal plane, and the dual-layer reel 301 and the two-wire coupling traverse 41 rotate coaxially and synchronously, the winding of the lift wire 1001 in the first wire guide 31 and the second wire guide 32 can be ensured to be uniform. The windings are uniform, the outer diameters of the coils are approximately the same, and the blind 1000 can be balanced better. Meanwhile, the first guide wheel 42 and the second guide wheel 43 are matched, so that the blade assembly 400 can be kept balanced better in the lifting process, and the phenomenon of high side and low side can not occur.

Referring to fig. 1, 2 and 11, in some alternative embodiments, the device further includes a tuning device 300 disposed in the mounting housing 1003, and the tuning device 300 includes a tuning device 310, a tuning rod 330 and a toggle assembly 320. The toggle assembly 320 is mounted in the mounting housing 1003 via a connection seat 340, and the resistance mechanism 10 may also be mounted in the connection seat 340 below the toggle assembly 320. Specifically, the stirring assembly 320 is provided with a connecting wire 1002 connected to the blade assembly 400, and both sides of the winding device 200 are provided with the stirring assembly 320. The frequency modulator 310 is disposed at one side of the winding device 200, the frequency modulator 310 is connected to the two stirring assemblies 320 through the frequency modulating rod 330, and the frequency modulator 310 is driven to drive the frequency modulating rod 330 to drive the two stirring assemblies 320 to rotate by a preset angle, so as to drive the blade assembly 400 to rotate by the preset angle. It is understood that the tuning rod 330 is a polygon prism, and may specifically be a quadrangular prism, a hexagonal prism, an eight-square prism, etc. The frequency modulator 310 is operated, so that the frequency modulator 310 drives the frequency modulation rod 330 to rotate, and the stirring component 320 can drive the connecting wire 1002 to rotate when rotating along with the frequency modulation rod 330, so as to drive the blade 410 to rotate. The connecting line 1002 mainly acts on the opened non-stacked blades 410, and the stacked blades 410 are mainly connected to the resistance mechanism 10 and the winding device 200 through the lifting line 1001.

As shown in fig. 1 to 11, the blind 1000 of the present utility model includes a mounting housing 1003, a winding device 200, a self-positioning elevating device 100 and a frequency modulation device 300 are provided in the mounting housing 1003, and a vane assembly 400 is provided below the mounting housing 1003. The self-positioning lift 100 includes a resistance mechanism 10 and an elastic positioning mechanism 20. The lifting wire 1001 in the winding device 200 is wound around the resistance mechanism 10 of the self-positioning lifting device 100 and connected to the blade assembly 400, when the blade 410 is pulled downward, the blade 410 acts on the resistance mechanism 10 through the lifting wire 1001, so that the resistance mechanism 10 can clamp the lifting wire 1001 to increase the resistance of the blade 410 to pull down, and the resistance mechanism 10 can release the lifting wire 1001 when the blade 410 is stacked upward, so that the blade 410 is folded upward. On the other hand, the elastic positioning mechanism 20 is linked with the winding device 200, and the elastic positioning mechanism 20 includes a first winding assembly 21, a second winding assembly 22, and a spring piece 23 wound on the first winding assembly 21 and/or the second winding assembly 22, one end of the spring piece 23 is connected to the first winding assembly 21, and the other end of the spring piece 23 is connected to the second winding assembly 22. The blade 410 moves up and down to rotate the winding device 200 to wind up and down the lifting wire 1001, and simultaneously drives the first winding assembly 21 and the second winding assembly 22 to rotate, so that the elastic sheet 23 winds up towards the first winding assembly 21 or winds up towards the second winding assembly 22. The elastic force of the elastic sheet 23 wound on the first winding assembly 21 or the second winding assembly 22 is always equal to the gravity of the lowermost stacked blades 410, so that the blades 410 can be positioned at any position. In another aspect, the winding assembly 30 in the winding device 200 includes a first winding portion 31 and a second winding portion 32 stacked together, and the first winding portion 31 and the second winding portion 32 rotate synchronously to lift and lower the lifting wire 1001 connected to both sides of the blade 410 synchronously. The winding device 200 further comprises a two-wire coupling wire arrangement 41 having two wire portions, a first wire portion 411 and a second wire portion 412 being coaxially arranged and simultaneously rotated. The first wire portion 411 and the first winding portion 31 are at the same height, and the second wire portion 412 and the second winding portion 32 are at the same height. The double-wire coupling wire arranging device 41 and the wire winding assembly 30 are matched, and the diameters of the outer rings of the first wire winding part 31 and the second wire winding part 32 can be better made to be the same when the lifting wire 1001 is wound and unwound, so that the phenomenon that the heights of the two ends of the blade assembly 400 are different can be effectively avoided. In yet another aspect, the tuning device 300 can conveniently angle the blade assembly 400 for greater comfort of use. According to the shutter 1000 disclosed by the utility model, the self-positioning lifting device 100 is arranged, so that the lifting operation of the blade 410 is more convenient, the blade 410 can be positioned at any position, and the two ends of the blade assembly 400 can be better kept at the same horizontal height due to the structure of the winding device 200.

The foregoing disclosure is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.

Claims (10)

1. The utility model provides a self-positioning elevating gear is applicable to the shutter, the shutter includes winding device and from top to bottom even and a plurality of blades of equidistance distribution, be provided with the lift line that can receive and release in the winding device, a serial communication port, include:

the lifting line passes through the resistance mechanism and is connected with a plurality of blades, and the resistance mechanism clamps the lifting line by pulling down the blades so as to form the resistance of downward movement of the blades, wherein the resistance is smaller than the pulling force for pulling the blades; pushing the blade upward to cause the resistance mechanism to loosen the lift line so as to fold the blade upward;

the elastic positioning mechanism is linked with the winding device and comprises a first winding component, a second winding component and an elastic piece wound on the first winding component and/or the second winding component, the blade is lifted and moved to rotate the winding device to retract the lifting wire and drive the first winding component and the second winding component to rotate, the elastic piece is wound on the first winding component or the second winding component, and the elastic force of the elastic piece wound on the second winding component is always equal to the gravity of the blade stacked at the lowest position so that the blade can be positioned at any position.

2. The self-positioning lifting device according to claim 1, wherein the resistance mechanism comprises a fixed seat, a movable assembly and a pulley assembly, wherein the movable assembly and the pulley assembly are arranged in the fixed seat, one end of the movable assembly is rotatably arranged below the pulley assembly, and the lifting wire is wound on the movable assembly; by pulling down the lifting line, one end of the movable assembly, which is close to the pulley assembly, is rotated to be close to the pulley assembly and matched with the pulley assembly to clamp the lifting line; the blade is lifted upward to cancel the force acting on the lift line to reset the movable assembly.

3. The self-positioning lifting device of claim 2, wherein the movable assembly comprises a mounting frame, and a first roller and a second roller arranged on the mounting frame, wherein the first roller is arranged at one end of the mounting frame, and the second roller is arranged at the other end of the mounting frame; one end of the mounting frame, which is close to the first roller, is rotatably arranged on the fixing seat, and the first roller is positioned below the pulley assembly; the pulley assembly comprises a first pulley and a second pulley, the first pulley is positioned on one side of the first roller, and the second pulley is positioned on the other side of the first roller; the lifting line sequentially winds the first roller and the second roller, and the second roller is stressed, so that the mounting frame rotates to the position where the first roller is close to the pulley assembly.

4. The self-positioning lifting device according to claim 1, wherein a first gear is arranged on the winding device, the first winding assembly comprises a second gear meshed with the first gear, and a third gear meshed with the second gear is arranged on the second winding assembly; the second gear is meshed with the first gear and the third gear respectively, so that when the winding device rotates to retract the lifting wire, the first winding assembly and the second winding assembly synchronously rotate, and the elastic sheet is wound towards the first winding assembly or the second winding assembly.

5. The self-positioning lifting device according to claim 4, wherein the upper end and the lower end of the winding device are respectively provided with a first gear, the upper end and the lower end of the first winding assembly are respectively provided with a second gear, and the two second gears are respectively meshed with the corresponding first gears.

6. The self-positioning lifting device according to claim 1, wherein the first winding assembly comprises a first winding wheel, the second winding assembly comprises a second winding wheel, one end of the elastic sheet is fixed on the first winding wheel, the other end of the elastic sheet is fixed on the second winding wheel, and the elastic sheet is elastically wound on the first winding wheel and/or the second winding wheel.

7. The utility model provides a shutter, includes installation casing, winding device and blade subassembly, winding device install in the installation casing, the blade subassembly install in the below of installation casing, the blade subassembly includes a plurality of blades of even and equidistance distribution from top to bottom, its characterized in that still includes the self-align elevating gear of any one of claims 1-6, self-align elevating gear install in the installation casing, self-align elevating gear includes being located at least two of winding device both sides resistance mechanism.

8. The blind of claim 7, wherein the winding device includes a winding assembly and a guide assembly, the winding assembly including a dual layer reel including a stacked first winding portion and second winding portion; the guide assembly comprises a double-wire coupling wire arrangement device, and the double-wire coupling wire arrangement device comprises a first wire part and a second wire part which are coaxially arranged; the first wire part and the first winding part are positioned on the same horizontal plane, and the second wire part and the second winding part are positioned on the same horizontal plane; by means of the cooperation of the double-layer reel and the double-wire coupling wire arrangement device, the consistency of winding of the lifting wire in the first winding part and the second winding part is enhanced, and therefore the blade assembly is balanced in the lifting process.

9. The blind of claim 8, wherein the guide assembly further comprises a first guide wheel and a second guide wheel on both sides of the winding assembly, the lift wire is simultaneously led out from the first winding part and the second winding part, and the lift wire in the first winding part sequentially winds around the first wire part, the first guide wheel and then passes through one of the resistance mechanisms and is sequentially connected to a plurality of the blades; the lifting wire in the second winding part sequentially winds the second wire part and the second guide wheel, then passes through one resistance mechanism and is sequentially connected with a plurality of blades.

10. The blind of claim 7, further comprising a frequency modulation device disposed in the installation housing, the frequency modulation device including a frequency modulator, a frequency modulation rod, and a stirring assembly, the stirring assembly being provided with a connection wire connected to the blade assembly, both sides of the winding device being provided with the stirring assembly, the frequency modulator being disposed on one side of the winding device, the frequency modulator being connected to the two stirring assemblies through the frequency modulation rod, the frequency modulator being driven to drive the frequency modulation rod to drive the two stirring assemblies to rotate by a preset angle, thereby driving the blade assembly to rotate by the preset angle.