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248 results about "Venetian blinds" patented technology

Photovoltaic electric control shutter hollow glass externally connected with control box

Photovoltaic electric control shutter hollow glass externally connected with a control box comprises a window body, a shutter blind, an electric driving device, a photovoltaic assembly and a receiver, the shutter blind is arranged in the window body, the electric driving device is arranged in an upper frame of the window body and used for driving the shutter blind to complete lifting and overturning, and the electric driving device is electrically connected with the wireless receiver; the receiver comprises a bottom box, a box cover and a main control circuit board, the main control circuit board is provided with a microprocessor, a power management unit, a photovoltaic charging management unit, a motor driving unit, a wireless signal receiving and processing unit, a key unit and an indicator light unit, and the photovoltaic charging management unit is electrically connected with the photovoltaic module; the wireless receiving device is installed in the upper frame of the hollow glass, the control key box which is externally connected and installed in a lower mode is adopted, the appearance of the hollow shutter glass can be neat, the key control box can be disassembled and assembled according to needs to be debugged and operated, the set height of the control key box better conforms to the using habit of a user, and operation is more convenient.
Owner:JIANGSU KERUIAITE BUILDING MATERIALS TECH GRP CO LTD

High-air-inlet-rate sewage-prevention alternating-current generator

The utility model discloses a sewage-proof alternating-current generator with high air inlet rate, which comprises a protective cover, an adjuster, a protective plug, a dustproof pad, a sealing ring, a rectifier bridge rear cover assembly, a stator assembly, a rotor assembly, a front end cover, a belt pulley and an adjusting washer, a plurality of raised air guide windows are formed on the top surface of the protective cover, the air inlets of the air guide windows are arranged downwards, and the air inlets of the air guide windows are arranged downwards. The beneficial effects of the utility model lie in that on the premise of not changing the generator, through the structural design of the shutter-type air guide windows on the protective cover, the air inlet amount of the motor is increased, the heat dissipation effect of the motor is enhanced, the temperature rise of the motor is reduced, and the service life of the motor is prolonged. Meanwhile, compared with a traditional structure that air holes are directly formed in the plane of the protective cover, mud oil water obliquely above the motor mounting direction can be effectively prevented from invading and flowing into the protective cover, and the product quality is improved.
Owner:ZHEJIANG DEHONG AUTOMOBILE ELECTRONICS CO LTD

Shutter structure

To propose a shutter structure that can prevent a sash from being damaged in a case where an object is thrown to a shutter curtain.SOLUTION: A shutter structure 1A includes a sash 2 installed in an opening 101 of a building, a shutter curtain 7 that can be raised / lowered and is installed on the outdoor side of the sash 2, and a buffer member 15 that covers outdoor and / or indoor surfaces of the shutter curtain 7 when the shutter curtain 7 is lowered, thereby suppressing bending of the shutter curtain 7 toward the sash 2.SELECTED DRAWING: Figure 1
Owner:BUNKA SHUTTER CO LTD

Hollow glass window with built-in shutter

The utility model discloses a built-in shutter hollow glass window which comprises a main frame, an auxiliary frame and a locking piece, a first glass plate is installed on the inner wall of the main frame through a first limiting piece, a shutter blind is installed in the main frame, and the auxiliary frame is rotationally connected with the main frame. A second glass plate is installed in the auxiliary frame through a second limiting piece, and the locking piece is connected with the main frame and the auxiliary frame. After the second screws are screwed off, the main frame and the auxiliary frame are in an open state, the auxiliary frame can rotate to drive the second glass plate to rotate, at the moment, the second glass plate does not shield the venetian blind, maintenance and replacement of the venetian blind are achieved, the operation space is large, and checking is convenient; and the blocking frame and the rubber strip can block the auxiliary frame, so that the sealing performance of closing the window is improved.
Owner:CHANGSHU HIGH TECH ENERGY SAVING DORWIN CO LTD

Photovoltaic electric device with built-in insulating glass

The present invention discloses a photovoltaic electric device with built-in insulating glass, comprising a frame, which is fixedly arranged inside the insulating glass and has a venetian blind arranged on its lower side; a take-up wheel, which is movably arranged inside the frame and has an outer wall connected to the venetian blind via a hanging rope; a drive assembly, which is used to drive the take-up wheel to rotate spirally; a photovoltaic panel, which is arranged on one side of the frame; and a power control unit, which is used to store electricity produced by the photovoltaic panel to supply energy to the drive assembly. By arranging the photovoltaic panel and the power control unit, the present invention can integrate the venetian blind into the inside of the insulating glass to achieve the sunshade function, and can also utilize sunlight to store energy to supply energy to the drive assembly, driving the take-up wheel to rotate when needed to achieve the electrically controlled lifting and lowering adjustment of the venetian blind. In addition, the spiral rotation function of the take-up wheel allows the hanging rope to be spirally wound and retracted, avoiding the problem of unstable retraction or adhesion caused by the ropes contacting and pressing each other when rewinding.
Owner:ANHUI PROVINCE JINPENG ENERGY SAVING TECH CO LTD

Aluminum alloy shutter

The present invention relates to the field of architectural decoration technology, and specifically to an aluminum alloy Venetian blind, comprising an aluminum alloy frame, a window blade body, an aluminum alloy insect-proof net, a pulling assembly, a switch assembly, a self-locking mechanism and a bottom waterproof mechanism. The aluminum alloy frame is a window frame formed by fixing a plurality of aluminum alloy plates together with bolts. The inner frame side walls of the aluminum alloy frame are symmetrically provided with a plurality of window blade mounting holes, and the window blade bodies are fitted in the mounting holes. An aluminum alloy insect-proof net is arranged between adjacent window blade bodies, and a switch assembly and a self-locking mechanism are respectively arranged in the cavities on both sides of the aluminum alloy frame. One end of the aluminum alloy insect-proof net provided in the present invention is connected to the front end of the aluminum alloy window blade, and the other end is connected to the pulling assembly. When the Venetian blind is opened, the pulling assembly and the aluminum alloy window blade are linked to stretch the aluminum alloy insect-proof net to form an insect-proof net, which blocks the gap between adjacent Venetian blind blades, thereby preventing mosquitoes from entering the house through the gap between the Venetian blind blades.
Owner:SHANDONG CHAOMING DOORS & WINDOWS CO LTD

A mute and windproof shutter

The application discloses a kind of mute windproof louvers, comprising: upper rail, motor installation cavity is arranged on it;Drive assembly, including drive motor, rope winding device, pull belt and ladder rope, drive motor is fixedly installed in motor installation cavity, rope winding device includes shell, reel, winding drum and turnover module;Steel wire rope, top end is fixedly installed on upper rail, steel wire rope bottom passes through several blades, bottom rail is connected to counterweight;Wherein, two bearings arranged in parallel are provided on the both sides of shell, the outer ring of bearing is fixedly installed on shell, the inner ring of bearing is fixedly installed on reel.Compared with prior art, the problem of poor windproof effect and large operating noise during use of electric louvers is solved.
Owner:SHANGHAI AKMEIDA SHADE TECHNOLOGY CO LTD

Energy storage cabinet temperature sensing intelligent adjusting shutter

The invention relates to the technical field of shutters, in particular to an energy storage cabinet temperature sensing intelligent adjusting shutter which comprises a frame, a rotating shaft rotationally connected to the lower portion of the frame, a plurality of blades arranged on the frame, rotating bodies arranged on the two sides of the blades and rotationally connected to the frame, gears fixedly connected to the rotating bodies, and racks meshed with the gears. The rack is connected with a power source, further, an upper barrier strip is further included, the upper barrier strip is arranged at the top of the frame, the frame is provided with partition blocks distributed at equal intervals, the partition blocks are located below the blades respectively, a lower barrier strip is arranged at the top of each partition block, and an upper barrier strip is further arranged at the bottom of each partition block. Through cooperation of the shaft body, the inserting block, the rotating body and other components, the purpose that the blades can be independently disassembled can be achieved, in addition, when the blades are disassembled, only the upper hook tongue and the lower hook tongue need to be movably connected in a clamped mode, the inserting block can be kept in the state of being separated from the rotating body, and therefore the blades can be conveniently disassembled.
Owner:JIANGXI YIZHOU DATA TECH CO LTD

Support system for adjustable slats suitable for being mounted in a sun-shading system with adjustable slats.

PCT designated stageWO2026133075A2Venetian blindsLouver
The present invention generally relates to a support system for adjustable slats. More specifically, it concerns a support system suitable for being mounted in a sun- shading system with adjustable slats, such as Venetian blinds, sunbreakers, or the like.
Owner:DAKOTA GRP S A S DI ZENO CIPRIANI & C

Large-layout magnetic-pulling shutter glass assembly

The utility model discloses a large-layout magnetic shutter glass assembly which comprises a first aluminum profile frame, an installation groove is formed in the inner side surface of the first aluminum profile frame, an aluminum profile frame material is arranged on the back face of the first aluminum profile frame, and a cover plate is connected to the front face of the aluminum profile frame material in an attached mode. According to the device, the first aluminum frame, the aluminum frame material, the cover plate and the second aluminum frame are combined through cooperation of the bolts and the nuts, the nuts on the bolts are detached during detachment, at the moment, after the first aluminum frame, the aluminum frame material and the second aluminum frame are freely separated, the first aluminum frame, the arranged aluminum frame material and the arranged second aluminum frame can be sequentially taken down, and the aluminum frame material and the second aluminum frame can be conveniently detached. The device can be conveniently disassembled and assembled, a second screw rod is screwed to be taken down from the side edge of the aluminum section frame material, and a division bar and a corner connector are taken down from the bottom of the aluminum section frame material, so that the purpose of disassembling the cover plate is achieved, follow-up maintenance of the magnetic pulling shutter blind is facilitated, disassembly, assembly and combination are facilitated, and cleaning is facilitated.
Owner:JIANGYIN HUARUIDE GLASS PROD CO LTD

Freeze prevention control system and method for indirect air-cooled towers

We provide a freeze prevention control system for indirect air-cooled towers. [Solution] The control system includes a shutter curtain, a temperature sensor, and control components. The shutter curtain is installed at the air intake of the air-cooling tower, the temperature sensor is installed on the fin tube of the triangular heat sink, and the control components include a signal acquisition box, a PLC module, and a DCS module connected to each other. The signal acquisition box is used to collect temperature signals and actual shutter curtain opening signals. The PLC module is used to process the signals and generate a shutter curtain opening signal to be adjusted. The DCS module receives the shutter curtain opening signal to be adjusted and controls the opening of the shutter curtain by an actuator. The height of the shutter curtain is adjusted in real time according to the water outlet temperature of the fin tube, maintaining low back pressure operation of the unit while preventing freezing.
Owner:INNER MONGOLIA HELIN POWER GENERATION CO LTD

A marine pneumatic remote-controlled shutter device

The present invention relates to the technical field of hull Venetian blinds, and discloses a marine pneumatic remote-controlled Venetian blind device, comprising a window frame and a plurality of blades, each blade being connected by a linkage pull rod; a driving cylinder, an emergency handle, and a transmission assembly, wherein the transmission assembly is in transmission connection with the emergency handle, and the transmission assembly further has an electric operation state in which the driving cylinder output piston is in transmission connection with the driving cylinder, and a manual operation state in which the driving cylinder output piston is disconnected from the driving cylinder output piston and is driven by the emergency handle; a rotary valve is also provided, wherein the rotary valve has an air-depletion state in which the driving cylinder is depleted to control the driving cylinder to close the blades, and an air-flow state in which the driving cylinder is opened to control the driving cylinder to open the blades. When the driving cylinder is operating normally, the rotary valve can be used to control the air-depletion or air-flow of the driving cylinder to close or open the blades. When the driving cylinder fails and cannot operate, the operator drives the transmission assembly through the emergency handle, thereby ensuring that the Venetian blind can still be opened even if the cylinder fails due to a malfunction of the blind.
Owner:CSSC HUANGPU WENCHONG SHIPBUILDING CO LTD

Preparation method of venetian blind

The invention provides a preparation method of a venetian blind, which comprises the following steps of: a) providing a thermoplastic plastic fiber which comprises a low-melting-point thermoplastic plastic and a high-melting-point thermoplastic plastic and is not additionally added with a chemical agent; based on 100 parts by weight of the thermoplastic plastic fiber, the proportion of the low-melting-point thermoplastic plastic is 40-80 parts by weight, the proportion of the high-melting-point thermoplastic plastic is 20-60 parts by weight, the melting point of the low-melting-point thermoplastic plastic is 100-210 DEG C, and the melting point of the high-melting-point thermoplastic plastic is 240-270 DEG C. And b) baking the thermoplastic plastic fibers and carrying out compression molding to form a blade structure. Therefore, according to the preparation method of the venetian blind, toxic substances cannot be generated in the manufacturing process, and the burden on the environment is small.
Owner:DONGGUAN ACONIC FABRIC CO LTD

Energy-saving louvered hollow glass window for ship

The application provides a marine energy-saving louver hollow glass window, which comprises inner glass, outer glass, a window body, a louver, a louver drive assembly, an energy storage battery pack and a control box. The louver drive assembly comprises a motor, a position limiter and a transmission device. The control box comprises a shell and a control circuit board. The control circuit board is provided with a microprocessor, a power management unit, a motor drive unit and a wireless signal receiving and processing unit. The motor drive unit is electrically connected with the motor. The motor is connected with the transmission device. The marine energy-saving louver hollow glass window further comprises an environment sensing module. The environment sensing module is arranged on the window body and is electrically connected with the control circuit board. The outer glass is electrochromic light-adjusting glass. The control circuit board is provided with an electrochromic drive circuit. The outer glass is electrically connected with the electrochromic drive circuit. The marine energy-saving louver hollow glass window can adjust the heat conduction performance of the louver according to the real-time environment to achieve the energy-saving purpose. The structure of the louver is fully utilized to meet the energy-saving demand and privacy protection.
Owner:JIANGSU SDL ENERGY CONSERVATION TECH CO LTD

Commercial vehicle high-low voltage integrated system

The utility model provides a commercial vehicle high-low voltage integrated system, which relates to the field of high-low voltage systems, and adopts the scheme that the commercial vehicle high-low voltage integrated system comprises a support plate and a protective shell, the support plate is arranged in the protective shell, a low-voltage storage battery is arranged on the support plate, and the low-voltage storage battery is arranged in the protective shell. A battery air conditioner is further arranged in the protective shell and located on the lower portion of the supporting plate, and a shutter is arranged at the position, corresponding to the battery air conditioner, of the protective shell. According to the utility model, the space utilization rate can be improved, and the occupation of a high-low pressure integrated system on the transverse mounting space of the frame is reduced.
Owner:SINO TRUK JINAN POWER CO LTD

A type of temperature-controlled louver

ActiveCN224452679UElectric machineGear wheel
This utility model provides a temperature-controlled venetian blind, relating to the technical field of venetian blind structures. It addresses the problems of most venetian blind structures being fixed and difficult to adjust, and adjustable venetian blinds typically relying on manual adjustment. Electric venetian blinds, controlled by preset programs or remote controls, suffer from issues such as response lag and inflexible adjustment. The venetian blind includes a top support frame, a bottom support frame, a first support frame, a second support frame, and a support shaft. The top support frame has a closed top plate on its side. The bottom support frame has an installation groove on its side. The first support frame is located on the sides of the top and bottom support frames. The second support frame is located on the sides of the top and bottom support frames. The support shaft is fixedly located between a manually controlled support shaft and an electrically controlled support shaft. A drive motor drives a drive gear chain to rotate, causing the electrically controlled support shaft to drive multiple sets of support shafts to rotate synchronously. This allows the support shafts to adjust the rotation of the venetian blinds according to temperature.
Owner:GUANGDONG FULINMEN SMART HOME CO LTD

Built-in shutter glass capable of reducing noise

The utility model discloses built-in shutter glass capable of reducing noise, which comprises a frame body, first glass is respectively arranged on one side in the frame body, second glass is arranged on the other side in the frame body, a hollow cavity is formed between the first glass and the second glass, a shutter blind is arranged in the hollow cavity, an anti-accumulation part is arranged in the shutter blind, and the anti-accumulation part is arranged in the frame body. By arranging the frame body, the first glass, the second glass, the hollow cavity, the shutter blind, the anti-accumulation part and the noise reduction part, the built-in shutter glass solves the problem that when existing built-in shutter glass is used, although air in the hollow glass can be dried through a drying agent, the air in the hollow glass can be prevented from being accumulated, and noise is reduced. The problems that the drying effect is affected due to the fact that the drying agent is accumulated at the inner bottom of the shutter, the drying agent at the lower position cannot make contact with air, and meanwhile the noise reduction performance of the shutter is poor, so that the practicability is poor are solved.
Owner:ANHUI YIPIN GLASS TECHNOLOGY CO LTD

A double-row louvered heat collection wall device and its usage method

This invention discloses a double-row venetian blind heat-collecting wall device and its usage method, comprising a light-transmitting glass and a heat-storage wall, and two rows of venetian blinds disposed between an air gap formed by the light-transmitting glass and the heat-storage wall; one or more electric heating plates are provided at the top of the air gap; a phase change material is placed inside the air gap; the inner and outer rows of venetian blinds are respectively fixed to a first shaft and a second shaft via a rotating shaft, the two ends of the first shaft and the second shaft being fixed to the roof and the floor respectively; each outer row of venetian blinds has a solar panel on its front and a heat reflector on its back; each inner row of venetian blinds has a light reflector on its front and a solar panel on its back; both the first solar panel and the second solar panel are connected to the electric heating plates via wires. This invention can effectively avoid excessively high indoor temperatures in summer and low indoor temperatures in winter, improve photoelectric conversion efficiency, reduce energy conversion losses, and provide people with a comfortable living environment.
Owner:SHIHEZI UNIVERSITY

A fixture for testing the shading performance of blinds

The present invention belongs to the field of detection jigs, and in particular to a jig for detecting the shading performance of a venetian blind. The following scheme is proposed, which includes a workbench, a bracket, a light board and a placement rack are fixedly installed on the top of the workbench, the placement rack is located between the bracket and the light board, the top of the bracket is slidably connected with a mounting plate, the rear side of the mounting plate is fixedly installed with a motor, the front side of the motor output shaft is fixedly installed with a moving gear, the top of the bracket is fixedly installed with a moving rack, the moving rack is meshed with the moving gear, and the front side of the mounting plate is fixedly installed with an electric push rod. The present invention places the venetian blind on the placement rack, first presses the push rack to control the clamp to fit with the venetian blind, first fixes the venetian blind, then closes the venetian blind and starts the light board, and then starts the motor. The motor can drive the brightness meter to move horizontally on the top of the venetian blind, so as to detect the shading performance of the venetian blind. The operation is simple and easy to use.
Owner:NANJING DIYI ENERGY SAVING TECH CO LTD

Venetian blind control handle (with hollow interior)

ActiveCN309818913SVenetian blindsLouver
1. Name of the design product: Venetian blind adjusting handle (with hollow inside). 2. Use of the design product: Adjusting control of the Venetian blind with hollow glass inside. 3. Design points of the design product: In shape. 4. Picture or photo best indicating the design points: Perspective view.
Owner:JIANGSU DINGYE ENERGY SAVING TECH CO LTD

Sheet-type shutter device

PendingJP2026115285AWindow shutterVenetian blinds
In a shutter device 1 equipped with a sheet-type shutter curtain 3, the front sealing material 12, one of the sealing materials 12 and 13 provided before and after the intake opening 10 of the shutter curtain 3, is made easily visible from below for inspection. [Solution] The front sealing material 12 is provided on the rear upright surface portion 7ce of the case bottom plate 7c, and positioned lower than the swallowing opening 10. This makes it easier to see from below compared to when it is provided at the swallowing opening 10, thereby improving maintainability.
Owner:SANWA SHUTTER CORP

Blind cord resistance adjustment structure and blind

A blind cord resistance adjustment structure and a curtain are provided. The structure includes a cord-winding shaft assembly, an adjustment block, and a blind cord. The cord-winding shaft assembly includes a housing, a rotating shaft, and a shaft sleeve. The shaft sleeve is rotatably mounted inside the housing along its circumferential direction and is sleeved onto and rotates synchronously with the rotating shaft. The upper end of the blind cord is connected to the shaft sleeve. The adjustment block is slidably disposed in the horizontal or substantially horizontal direction on the lower side of the housing. The housing is provided with a first through-hole for the blind cord to pass through, and the adjustment block is provided with a second through-hole for the blind cord to pass through.
Owner:NINGBO ZHENFEI DECORATED CURTAIN CO LTD

Building shutter device

To achieve a further increase in wind resistance function of a device which includes a shutter curtain 3 that is provided with a slat 6 connected via an interlock joint section X, and which is provided with a wind-resistant function to prevent the shutter curtain 3 from falling off by engagement of an engagement groove 3a formed in the interlock joint section X with an engagement receiving portion 2d formed in a guide rail 2 when the shutter curtain 3 is bent by a strong wind.SOLUTION: The slat 6 is configured to have a bulging piece 6d formed on a slat body piece 6a, and a third engagement groove 6e that is similar to the engagement groove 3a in engagement condition is formed at the bulging piece 6d.SELECTED DRAWING: Figure 5
Owner:SANWA SHUTTER CORP

Scroll sunshade

The utility model belongs to the technical field of sky curtain pavilions, and particularly relates to a reel sunshade which comprises a sunshade body frame assembly used for supporting, the fixed end of the sunshade body frame assembly is fixedly connected with a driving system assembly, and the fixed end of the sunshade body frame assembly is provided with a transmission system assembly for transmitting kinetic energy. The movable end of the transmission system assembly is fixedly connected with a traction rod, the side face of the traction rod is rotationally connected with a waterproof connecting rod, the side face of the waterproof connecting rod is rotationally connected with a venetian blind piece, the side, away from the waterproof connecting rod, of the venetian blind piece is rotationally connected with an anti-skid connecting rod, and the side face of the anti-skid connecting rod is rotationally connected with a pulley. The utility model solves the problems that the similar products on the market are often complex in structure, the blades are connected through X-shaped hinges, the rigid contact has no elastic compensation, the operation is unstable after long-term use, and regular ash removal and lubricating oil feeding are needed every year, so that the durability of the device is improved, and the service life is prolonged.
Owner:ZHEJIANG WEIYIJIA IND & TRADE CO LTD

Double-layer hollow glass outer window with built-in shutter window shade

The utility model relates to a double-layer hollow glass outer window with a built-in shutter window shade, which comprises a window frame, glass is mounted in mounting grooves in the inner walls of the left and right sides of the window frame, a hollow mounting cavity is formed between the inner and outer layers of glass, inert gas is filled in the hollow mounting cavity, and spacing bars are connected between the inner and outer layers of glass in the mounting grooves in the front and rear inner walls of the window frame. A drying agent coating is arranged on the surface of each spacing strip, vertical lifting rails are arranged in the mounting grooves in the front inner wall and the rear inner wall of the window frame, a venetian blind is mounted between the two lifting rails, three rope penetrating holes are formed in each of the two ends of the venetian blind, a lifting rope is mounted in the middle rope penetrating hole in a penetrating mode, and curtain piece opening and closing control ropes are arranged in the other two rope penetrating holes in a penetrating mode; the lifting rope is connected with a lifting motor, and the curtain piece opening and closing control rope is connected with the opening and closing control knob through the opening and closing control horizontal screw rod, the opening and closing control vertical screw rod and the operation screw rod. The light-shading window not only has good heat insulation performance and sound insulation effect, but also can realize an effective light-shading function.
Owner:CHINA CONSTR SIXTH BUREAU NORTH CHINA CONSTR CO LTD

Support for a blind or venetian blind, as well as the blind or venetian blind itself.

The invention relates to a support (1) of a blind or venetian blind for attaching a top rail (3) to a mounting surface, wherein a motor (4) for raising and lowering a curtain (6) is mounted in the top rail (3), wherein the surface of the support (1) has at least a partial coating of a textile material in order to at least dampen the formation and transmission of noise and vibrations to the mounting surface during operation of the motor (4). The invention further relates to a blind or venetian blind for shading a building opening, comprising at least a top rail (3) and at least one support (1) for attaching the top rail (3) to a mounting surface, wherein a motor (4) for raising and lowering a curtain (6) is installed in the top rail (3), wherein the at least one support (1) is designed according to the invention.
Owner:REFLEXA WERKE ALBRECHT

Venetian blind and ladder belt mechanism thereof

The embodiment of the utility model provides a venetian blind and a ladder belt mechanism thereof, and the ladder belt mechanism comprises a base which is fixed on an upper beam of the venetian blind; the ladder belt winding drum is pivoted on the base; the top end of the ladder belt is wound on the ladder belt winding drum, the bottom end of the ladder belt extends downwards from the upper beam, and the ladder belt is sequentially connected with the slats of the venetian blind; the transmission shaft penetrates through the ladder belt winding drum along the central axis of the ladder belt winding drum and is fixed to the ladder belt winding drum in the circumferential direction; the power part is arranged at one end of the transmission shaft and is used for driving the transmission shaft and the ladder belt winding drum to synchronously rotate to enable the ladder belts to correspondingly move to drive the curtain sheets to rotate by corresponding angles; the limiting assembly comprises a rotating arm which is arranged on the transmission shaft and synchronously rotates along with the transmission shaft; the check block and the upper beam are relatively fixedly assembled on the rotating path of the rotating arm so as to limit the rotating angle range of the rotating arm. The rotating angle of the curtain pieces is prevented from being too large, and abrasion of the curtain pieces to the pull ropes is reduced.
Owner:LEAFY WINDOWARE CO LTD