WO2019153740A1 - 无绳卷帘 - Google Patents

无绳卷帘 Download PDF

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Publication number
WO2019153740A1
WO2019153740A1 PCT/CN2018/105199 CN2018105199W WO2019153740A1 WO 2019153740 A1 WO2019153740 A1 WO 2019153740A1 CN 2018105199 W CN2018105199 W CN 2018105199W WO 2019153740 A1 WO2019153740 A1 WO 2019153740A1
Authority
WO
WIPO (PCT)
Prior art keywords
positioning
disc
roller blind
friction
turntable
Prior art date
Application number
PCT/CN2018/105199
Other languages
English (en)
French (fr)
Inventor
谢林·斯特凡
Original Assignee
浙江兆事达智能家居股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 浙江兆事达智能家居股份有限公司 filed Critical 浙江兆事达智能家居股份有限公司
Priority to EP18905154.3A priority Critical patent/EP3751090B1/en
Priority to US16/968,601 priority patent/US11834905B2/en
Publication of WO2019153740A1 publication Critical patent/WO2019153740A1/zh

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
    • E06B9/90—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic for immobilising the closure member in various chosen positions
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/60—Spring drums operated only by closure members
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/40—Roller blinds
    • E06B9/42—Parts or details of roller blinds, e.g. suspension devices, blind boxes
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/80—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling
    • E06B9/82—Safety measures against dropping or unauthorised opening; Braking or immobilising devices; Devices for limiting unrolling automatic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D59/00—Self-acting brakes, e.g. coming into operation at a predetermined speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2127/00—Auxiliary mechanisms
    • F16D2127/001—Auxiliary mechanisms for automatic or self-acting brake operation
    • F16D2127/005—Auxiliary mechanisms for automatic or self-acting brake operation force- or torque-responsive

Definitions

  • the present invention relates to a roller blind, and more particularly to a cordless roller blind.
  • a prior art type of roller blind achieves reel winding by a bead chain, while at the same time, the bead chain is used to achieve self-locking of the reel at a desired position to fix the degree of opening of the curtain.
  • Such roller blinds need to pull the bead chain hard when they are used, but it is easy to cause the bead chain to break. After the bead chain is disconnected, the roller blind can no longer be used, and when the curtain body is pulled down, the gravity of the curtain body causes a certain degree to the reel. The torque, while the self-locking process, the head always carries this torque, which is easy to cause head damage.
  • roller blinds need to hang a bead chain or a rope, which not only affects the appearance, but also easily causes a neck around the child, posing a safety hazard.
  • roller blinds that is driven by a motor to rotate the drum to rotate the motor.
  • the motor shaft is used to limit the position of the drum self-locking, and the gravity of the curtain body causes a certain degree of torque to the drum. The torque acts completely on the motor shaft, causing a significant load on the motor.
  • the present invention is mainly directed to the above problems, and provides a method capable of manually raising or lowering a curtain body to a desired position according to actual use requirements and self-locking, self-locking process, and the reel itself and the limiting member are not subjected to excessive torque.
  • a cordless roller blind that causes irreversible damage.
  • a cordless roller blind comprising a reel having a coil spring disposed therein and a curtain wound on the reel, and further comprising: at least one brake device;
  • the torsion changes with the rotation of the reel.
  • the torsion of the coil spring, the friction provided by the brake device and the gravity of the drooping portion of the curtain balance each other, and the curtain body is stationary at any position without external force.
  • the curtain body is wound by a reel. When the curtain body needs to be wound up, the curtain body is pushed upward, and the external force of the curtain body is pushed to break the balance of the torsion force, the friction force and the gravity, and the reel of the reel drives the curtain body to be wound onto the reel. Recycle the curtain.
  • the curtain body When the curtain body is wound in place, the external force is removed, the curtain body is rebalanced by the torsion, friction and gravity, and the curtain body is stationary.
  • the curtain body needs to be pulled down, as with the upward winding of the curtain body, the balance is broken by the external force, and the curtain body moves.
  • the torque of the coil spring, the frictional force in the brake device, and the gravity of the drooping portion of the curtain body are reached. Balance so that the curtain automatically locks at the desired position.
  • the entire roller blind can pull down the curtain body according to the actual use, and can be automatically locked after being pulled down to the desired position.
  • the torque of the coil spring, the frictional force in the brake device, and the gravity of the drooping portion of the curtain body are achieved.
  • the maximum static friction of the brake device is constant.
  • the static balance is broken by the external force, and the static state is adjusted until the curtain can be lifted up and down.
  • the torsion force of the coil spring, the friction provided by the brake device, and the drooping portion of the curtain body are The three of gravity are balanced again.
  • the friction provided by the brake device is not greater than the maximum static friction of the brake device. That is to say, in each static position, the friction provided by the brake device is based on the curtain at the rest position.
  • the body weight and the coil spring torque are obtained, but the friction is less than the maximum static friction that the brake device can provide, so that the curtain can be in a static state at any position without external force.
  • the external force is greater than the maximum static friction force, breaking the static state of the curtain body, and letting the curtain body wind up.
  • the frictional force of the brake device acts again to make the curtain body stand still.
  • the torsion of the coil spring and the direction of gravity of the drooping portion of the curtain are always opposite, and the direction of the friction is determined according to the difference between the torsion and the gravity.
  • the brakes can be adjusted before installation.
  • the frictional force of the brake device can be adjusted, and the frictional force in the brake device is adjusted according to the weight of the different curtain body.
  • the difference in fabric makes the weight of the curtain different, and the friction of the brake device is set according to the gravity.
  • the amount of friction can be adjusted by manual adjustment, and the torque generated by the coil spring can be manually adjusted to adjust according to the weight of the drooping portion of the curtain.
  • the friction force of the brake device is variable during the winding process of the curtain body.
  • the pressure acting on the brake device decreases as the external force counteracts the gravity of the curtain body.
  • the frictional force is correspondingly reduced, and the torsion force of the coil spring drives the curtain body to wind upward.
  • the frictional force is increased, and the torsion force of the coil spring and the gravity of the drooping portion of the curtain are balanced to make the curtain stand still.
  • the brake device comprises a turntable and a positioning disc in the turntable, and the relative rotation between the positioning disc and the turntable.
  • the frictional force of the brake device is contacted between the turntable and the positioning disc by the rotating disc and the positioning disc.
  • the friction is provided.
  • the turntable is connected with the reel, the rotation of the reel drives the turntable to rotate, and the curtain on the reel is pulled down or pushed upwards, and the pressure acting on the reel changes with the external force and the gravity of the curtain on the reel, thereby allowing the turntable to
  • the pressure changes in the contact portion between the positioning discs, and the pressure change causes a change in friction between the two. In the absence of external force, friction, torque and gravity are balanced.
  • the positioning disc is composed of one or more wear-resistant materials of friction coefficient, and the frictional force between the positioning disc and the turntable depends on the friction coefficient of the material of the contact portion between the positioning disc and the turntable.
  • the turntable rotates with the reel on which the roller blind is mounted, and the position at which the turntable contacts the locating disc changes during the movement. Due to the difference in the material of the locating disc, the frictional force is due to the contact position. Differences will also change. Choosing different locating disc materials can determine different friction coefficients to determine different frictional forces and adapt to self-locking requirements.
  • the brake device comprises a turntable and a positioning plate in the turntable. At least one friction member is disposed between the positioning plate and the turntable.
  • the positioning plate and the turntable rotate relative to each other, and the friction force of the brake device is two. Part of the composition, one part is provided by the friction between the rotating disc and the friction member, and the other part is provided by the friction between the rotating disc and the positioning disc, and the friction between the rotating disc and the positioning disc is greater than or equal to zero.
  • the friction of the brake device is achieved by adjusting the relative angle between the turntable and the positioning plate.
  • the friction member can be easily adjusted to change the friction force, and can be quickly replaced after being worn, and the cost is low.
  • the friction member can be a friction ring that is fixed in the positioning plate.
  • the turntable and the positioning plate are installed concentrically. After the turntable is inserted into the end of the reel, the downward pressure of the turntable, the turntable and the positioning plate are given due to the gravity of the ply on the reel. The eccentricity is generated so that the turntable is brought into contact with the positioning disc or the friction member to form the friction of the brake device.
  • the friction coefficient of the positioning disk and the friction member is different.
  • Rotating the turntable the turntable has contact with the positioning disc and the friction member, the friction coefficient of the positioning disc and the friction member is different, so the friction between the turntable and the positioning disc and the friction between the rotating disc and the friction member are different, the turntable is At different angles, the area in contact with the locating disc and the friction member is different, so that the friction of the brake device is different.
  • the friction between the positioning plate and the turntable may be greater than the friction between the turntable and the friction member, and the friction between the disk and the turntable may be less than the friction between the turntable and the friction member.
  • the braking device further includes: a first positioning plate, the first positioning plate is connected to the positioning plate, and the rotating plate is matched with the positioning plate, and one end of the rotating plate away from the positioning plate is fixedly connected with the reel.
  • the first positioning plate is provided with a positioning post, and the positioning plate is provided with a positioning hole matched with the positioning column. After the positioning disc is installed, the positioning post is matched with the positioning hole, so that the positioning disc cannot be rotated.
  • the positioning post may be a circular cylinder, and the outer circumferential surface of the cylinder is uniformly provided with a convex shape, and the positioning holes are arranged in a corresponding shape.
  • the positioning post can also be a shape such as a polygon.
  • the adjusting device further comprises: an adjusting device for adjusting the pre-tightening force of the coil spring, the adjusting device comprising: a fixing cylinder fixedly connected to one end of the coil spring, and an adjusting disc fixedly connected to the other end of the coil spring, the fixing cylinder is located in the reel and The reel is fixed and the adjustment disc is fixed at the end of the reel.
  • the adjustment device further includes a positioning piece and a second positioning plate that cooperate with the adjustment disk.
  • the fixed cylinder is fixed to the reel, and the fixed cylinder rotates synchronously with the reel, so that one end of the coil spring is wound, and different torque is generated.
  • the other end of the coil spring is fixed on the adjusting disc. After the adjusting device is mounted on the roller blind, the adjusting disc is fixed on the second positioning plate, and the adjusting disc is fixed.
  • the adjustment disk is located outside the drum and can be manually adjusted on the front or adjusted with a tool.
  • the adjustment device of the adjustment disc is located between the reel and the second positioning plate.
  • a positioning rod is disposed between the fixing cylinder and the adjusting plate, and the coil spring is sleeved on the positioning rod.
  • the positioning rod supports the coil spring, and at the same time, the distance between the fixed cylinder and the adjusting disc can be determined, and the positioning of the fixed cylinder is facilitated.
  • the edge of the adjusting disc is distributed with a latching tooth
  • the positioning piece is provided with a handle that cooperates with the latch. Select the position where the latches are stuck to adjust the initial position of the coil spring to determine the torque.
  • a mounting plate is disposed between the first positioning plate in the brake device and the second positioning plate in the adjusting device.
  • the installation of the mounting plate facilitates the integral installation of the brake device and the adjusting device, that is, the brake device and the adjusting device on both sides of the mounting plate are pre-installed separately, and then assembled to the roller blind.
  • the coil spring can also be pre-adjusted for pre-tightening.
  • the first positioning plate and the second positioning plate are respectively provided with pins that cooperate with the slots.
  • the relative positions of the first positioning plate and the second positioning plate are completed by the cooperation of the pins and the slots.
  • the curtain comprises a cord and a bottom bar at the lower end of the cord.
  • the cordless roller blind of the present invention has the following advantages: the entire roller blind can pull down the curtain body according to the actual use, and can be automatically locked after being pulled down to the desired position, and the torque of the coil spring and the turntable during the locking process The friction with the positioning disc and the gravity of the drooping portion of the curtain are balanced to prevent the other components of the roller blind from being loaded.
  • Figure 1 is a schematic view showing the structure of the present invention
  • Figure 2 is a cross-sectional view of the curtain removed of Figure 1;
  • Figure 3 is an exploded view of the brake device of the present invention.
  • Figure 4 is a cross-sectional view of the turntable and the positioning disk of Figure 3;
  • Figure 5 is an exploded view of the adjustment device of the present invention.
  • a cordless roller blind includes a reel 1 in which a coil spring is disposed, and a curtain 2 wound on a reel, which is composed of a cord and a bottom bar at the lower end of the fabric.
  • the utility model further comprises: a brake device 4 for realizing the rotation and self-locking of the reel, the brake device is located at one end of the reel; an adjusting device 5 for adjusting the pre-tightening force of the reel spring, the adjusting device is located at the other end of the reel, of course, the adjusting device It can be placed at the same end as the brakes.
  • the brake device includes: a first positioning plate 6 vertically connected to the spool axis, a positioning plate 7 fixedly coupled to the first positioning plate, and a turntable 10 sleeved outside the positioning plate, the turntable Matches with the positioning disc.
  • the turntable comprises an integrally formed connecting plate 24 and a connecting post 25.
  • the connecting plate 24 is sleeved outside the positioning plate 7.
  • the outer surface of the connecting post 25 is uniformly provided with a protrusion, and the connecting post 25 is inserted into the reel 1 through the protrusion and the roll.
  • the inner wall of the cylinder is fixed so that the turntable 10 rotates in synchronization with the reel 1.
  • a positioning post 11 is integrally formed under the first positioning plate 6.
  • the outer circumferential surface of the positioning post 11 is integrally formed with a card protrusion.
  • the shape of the positioning hole in the positioning plate 7 is the same as the shape of the positioning post, thereby ensuring that the positioning plate 7 is fixed.
  • a positioning groove 8 is formed on the end surface of the positioning plate, and the positioning groove has a U shape, and a friction ring is installed in the positioning groove.
  • the positioning disc and the friction ring are made of different materials, and the friction coefficients of the two are different.
  • the positioning disk 7 is arranged concentrically with the turntable 10. After the turntable 10 is inserted into the reel 1, after the reel 1 is wound with the curtain 2, the turntable is subjected to pressure due to the gravity of the curtain, so that the turntable and the positioning disc generate a certain eccentricity, the turntable 10 and the positioning disc 7 is in contact with the friction ring 9 on the positioning plate, and the length of the contact portion L determines the amount of friction.
  • the adjusting device includes a coil spring 23, one end of which is fixed to the fixed cylinder 21, and the other end of the coil spring 23 is fixed to the regulating disc 14, and the outer circumferential surface of the adjusting disc 14 is integrally formed with a card.
  • the tooth 15 is provided with a handle on one side of the adjusting plate, and a positioning piece 16 is integrally formed on the handle, and the adjusting piece can be prevented from rotating by the positioning piece.
  • the fixing cylinder 21 and the adjusting disc 14 are connected by a positioning rod 20, and the coil spring is sleeved on the positioning rod 20.
  • the fixed cylinder 21 is located in the reel 1, and the fixed cylinder 21 rotates in synchronization with the reel 1, thereby twisting one end of the coil spring 23 to generate a torsion.
  • the adjusting plate is located outside the reel, and the outer side of the adjusting plate is provided with a second positioning plate 18, and the second positioning plate is provided with a fixing protrusion, and the positioning piece 16 is fixed on the second positioning plate 18.
  • the first positioning plate 6 and the second positioning plate 18 are connected by the mounting plate 3.
  • a pin 19 is integrally formed, and the pin 19 is inserted into the mounting plate to thereby fix the first positioning.
  • the plate and the second positioning plate are connected to the mounting plate.
  • the brakes and adjustments are pre-installed and adjusted before being mounted on the roller blind.
  • the positioning plate and the turntable of the brake device are arranged concentrically, the initial torque of the coil spring is set, the positioning piece is clamped to the latch on the adjusting plate, the braking device is mounted on the first positioning plate, and the adjusting device is mounted on the second positioning plate. Then, the first positioning plate and the second positioning plate are connected through the mounting plate, and then integrally mounted to the roller blind.
  • the end of the turntable is inserted into one end of the reel, and the fixed cylinder is inserted into the other end of the reel. Due to the weight of the curtain on the reel, the rotating disc is pressed against the positioning disc to generate eccentricity, and the contact portion of the rotating plate on the rotating disc and the positioning disc and the positioning disc generates friction due to the pressure, and the maximum static friction of the brake device is constant. . In the absence of external force, the torsion of the coil spring, the friction provided by the brake device and the gravity of the drooping portion of the curtain balance each other, and the curtain is stationary.
  • an external force is applied to the curtain body to break the balance state, and the external force is greater than the maximum static friction force, so that the curtain body can be adjusted, and the friction force can be adjusted during the winding process of the curtain body.
  • the pressure acting on the brake device decreases as the external force counteracts the gravity of the curtain body, and the frictional force is correspondingly reduced, and the torsion force of the coil spring drives the curtain body to wind upward.
  • the external force disappears. Due to the frictional force, the torsion force of the coil spring, the frictional force provided by the brake device and the gravity of the drooping portion of the curtain body are again balanced, and the curtain body is still.
  • the curtain body is wound by a reel, and when the curtain body does not need to be pulled down, the bottom rod is pushed upward, and the coil spring can drive the reel to rotate, and wind and recover the curtain body.
  • the curtain body can be pulled down to the desired position by simply pulling the curtain body itself.
  • the torque of the coil spring, the friction force of the turntable and the positioning disc, and the gravity of the drooping portion of the curtain body are reached. Balance so that the curtain automatically locks at the desired position.
  • the degree of tightness of the coil spring changes, and the pre-tightening force of the coil spring can be adjusted according to the adjusting device, so that the pre-tightening force can just provide the reeling of the reel.
  • the entire roller blind can pull down the curtain body according to the actual use, and can be automatically locked after being pulled down to the desired position.
  • the torque of the coil spring, the friction between the turntable and the positioning plate, and the gravity of the drooping portion of the curtain body can be achieved. Balance is achieved to avoid loading other parts of the roller blind.
  • the first positioning plate is used to fix the positioning plate and the rotating plate.
  • the rotating plate is sleeved on the outside of the positioning plate and cooperates with the positioning plate.
  • the curtain body drives the reel to rotate, and the reel can drive the rotating table to rotate relative to the positioning plate.
  • the curtain body is pulled down to the desired position, the curtain body is loosened, and the gravity of the curtain body acts on the turntable, so that the turntable receives a downward pulling force.
  • the turntable and the positioning disc are eccentric, when the turntable and the positioning disc are eccentric, The inner wall of the turntable is in close contact with the positioning disc and the friction ring to generate friction.
  • the torque of the coil spring, the friction between the turntable and the positioning disc, and the gravity of the drooping portion of the curtain are balanced, so that the turntable and the reel stop rotating, and the curtain body is self-locking. Need to be at the location.
  • a positioning groove is arranged on the end surface of the positioning plate, and a friction ring is arranged at the positioning groove.
  • the side of the friction ring away from the axis of the positioning plate has a portion exposed outside the positioning groove, and this portion can be Protruding from the edge of the locating disc, the bulging portion can be utilized to achieve friction with the inner wall of the turntable when the eccentric position of the turntable and the locating disc is different.
  • the positioning groove has a "U" shape. When the friction ring is embedded in the positioning groove, the opening of the "U"-shaped positioning groove is exactly the portion of the friction ring protruding from the positioning plate.
  • the first positioning plate is perpendicular to the first positioning plate, and the positioning column is disposed.
  • the outer surface of the positioning column is radially disposed with a plurality of protrusions, and the card protrusion is disposed along the axis of the positioning column and distributed around the axis of the positioning column.
  • the positioning hole is arranged on the upper side, and when the positioning post is inserted into the positioning hole, the positioning hole can be fixed by the positioning of the positioning post to achieve coaxial fixation between the first positioning plate and the positioning plate, and can be rotated when the rotating plate is rotated relative to the positioning plate. It is ensured that the positioning plate is relatively stationary with the first positioning plate.
  • the adjusting device comprises an adjusting plate and a positioning piece, and the adjusting plate and the positioning piece are connected together by the second positioning plate.
  • the outer edge of the adjusting disc is provided with a latching tooth, and the locking handle is matched with the latching tooth on the positioning piece, and the locking handle is stationary relative to the second positioning plate.
  • the latch handle supports the latching teeth at the latching teeth to achieve the fixing of the coil spring pre-tightening force.
  • the handle is disengaged from the latch, and the coil spring drives the adjustment disc to reverse and relax the coil spring pre-tightening force.
  • the coil spring is wound around the positioning rod. One end of the coil spring is fixed on the adjusting disc and the other end is fixed on the fixing cylinder, and the coil spring is twisted by the relative rotation difference between the fixing cylinder and the adjusting disc.
  • a mounting plate is arranged between the brake device and the adjusting device, and the fixing between the roller blind and the wall or the ceiling can be achieved by the mounting plate, and the fixing plate can be used to fix the braking device and the adjusting device, and the braking device and the reinforcing device are enhanced. Adjusting the coaxiality of the device prevents the torque between the two ends of the reel from being uncoordinated when the torque of the brake device and the adjusting device are opposite.
  • the bottom end of the curtain body is provided with a bottom rod. The bottom rod can not only facilitate the pulling of the curtain body by hand, but also can increase the weight of the curtain body by using the bottom rod, and is convenient for adjusting the friction force generated by the weight of the curtain body and the friction device and the torque generated by the coil spring.
  • the side where the curtain is drooped may be the side close to the window or the side away from the window, and may be adjusted according to actual installation requirements, and at the same time, the position of the brake device may be adjusted according to the direction of the side of the curtain hanging down. .

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)

Abstract

一种无绳卷帘，包括内部设置有卷簧(23)的卷筒(1)以及卷绕在卷筒(1)上的帘体(2)，还包括：至少一个刹车装置(4)；卷簧(23)的扭力随着卷筒(1)旋转而变化，卷簧 (23)的扭力、刹车装置(4)提供的摩擦力和帘体(2)下垂部分的重力三者相互平衡，帘体(2)在没有外力作用下在任何位置静止。提供一种能够根据实际的使用需要手动上升或下拉帘体(2)至所需位置并自锁、自锁过程中卷筒(1)本身以及限位构件不会受到过大的扭矩而造成不可逆的损坏的无绳卷帘。

Description

无绳卷帘 技术领域
本发明涉及一种卷帘，尤其是涉及一种无绳卷帘。
背景技术
现有的一类卷帘通过珠链实现卷筒卷绕，与此同时，利用珠链实现卷筒在所需位置自锁来固定帘体的打开程度。这类卷帘在使用时需要用力拉动珠链，但容易造成珠链断裂，珠链断开后，则无法再使用卷帘，而且在帘体下拉时，帘体的重力对卷筒造成一定程度的扭矩，而自锁过程中，制头始终承载这个扭矩，容易造成制头损坏。这类卷帘需要悬挂珠链或者绳子，不仅影响美观，而且及其容易对儿童造成绕颈，存在安全隐患。还有一类卷帘是通过电机带动，通过电机旋转来带动卷筒旋转，与此同时，利用电机转轴来限制卷筒自锁的位置，帘体的重力对卷筒造成一定程度的扭矩，而这个扭矩完全作用在电机主轴上，对电机造成极大的负荷。
发明内容
本发明主要是针对上述问题，提供一种能够根据实际的使用需要手动上升或下拉帘体至所需位置并自锁、自锁过程中卷筒本身以及限位构件不会受到过大的扭矩而造成不可逆的损坏的无绳卷帘。
本发明的目的主要是通过下述方案得以实现的：一种无绳卷帘，包括内部设置有卷簧的卷筒以及卷绕在卷筒上的帘体，还包括：至少一个刹车装置；卷簧的扭力随着卷筒旋转而变化，卷簧的扭力、刹车装置提供的摩擦力和帘体下垂部分的重力三者相互平衡，帘体在没有外力作用下在任何位置静止。帘体通过卷筒卷绕，当帘体需要向上卷绕时，向上推动帘体，推动帘体的外力打破扭力、摩擦力和重力的平衡，卷筒回转带动帘体卷绕到卷筒上，回收帘体。当帘体卷绕到位后，外力撤掉，帘体受到扭力、摩擦力和重力重新平衡，帘体静止。当帘体需要下拉时，与帘体向上卷绕时一样，开始通过外力打破平衡，帘体运动，当位置确定后，卷簧的扭矩、刹车装置内的摩擦力、帘体下垂部分的重力达到平衡，使帘体自动锁止在所需位置处。整个卷帘能够根据实际的使用需要下拉帘体，下拉至所需位置后，能够实现自动锁止，锁止过程中，卷簧的扭矩、刹车装置内的摩擦力、帘体下垂部分的重力达到平衡，避免卷帘其他部件受到载荷。刹车装置的最大静摩擦力是不变的，通过外力打破静平衡，将静止状态调整到帘布可上下升降状态，撤掉外力后，卷簧的扭力、刹车装置提供的摩擦力和帘体下垂部分的重力三者重新相互平衡，此时刹车装置的提供的摩擦力是不大于刹车装置的 最大静摩擦力的，也就是说在每个静止的位置，刹车装置提供的摩擦力是根据静止位置时的帘体重力和卷簧扭力得到的，但是摩擦力都小于刹车装置能提供的最大静摩擦力，从而能保证帘体在没有外力作用下在任何位置的静止状态。当有外力作用时，外力大于最大静摩擦力，打破帘体的静止状态，让帘体进行卷绕，当外力消失时，刹车装置的摩擦力再次起作用，让帘体静止。卷簧的扭力和帘体下垂部分的重力方向始终相反，摩擦力的方向根据扭力和重力的差值来确定。
针对不同的卷帘，在安装前，刹车装置都可以进行调节。作为优选，刹车装置的摩擦力能够调节，刹车装置内的摩擦力根据不同帘体的重量不同而进行调整。面料的不同，使得帘体的重力不同，刹车装置的摩擦力根据重力不同进行设定。摩擦力大小能够手动调节的方式来调节大小，卷簧产生的扭矩能够手动调节大小，根据帘体下垂部分的重量来进行调节。
对于同一帘体而言，刹车装置的摩擦力在帘体卷绕过程中是可变的，外力推动帘体向上运动时，作用在刹车装置上的压力随着外力抵消帘体的重力而减小，摩擦力相应减小，卷簧的扭力带动帘体向上卷绕。外力撤销后，摩擦力增大，与卷簧的扭力和帘体下垂部分的重力达到平衡，让帘体静止。
作为一种优选，所述的刹车装置包括转盘和在转盘内的定位盘，定位盘与转盘之间相对转动，刹车装置的摩擦力由转盘与定位盘受力接触后，转盘与定位盘之间的摩擦力提供。转盘与卷筒相接，卷筒的转动带动转盘转动，卷筒上的帘布向下拉或者向上推，作用在卷筒上的压力随着外力和卷筒上的帘布的重力变化，从而让转盘与定位盘之间接触部分的压力变化，压力变化带来两者之间的摩擦力变化。在没有外力作用下，摩擦力、扭力和重力三者平衡。
作为更优选，所述的定位盘是由一种或者一种以上的摩擦系数的耐磨材料组成，定位盘与转盘之间的摩擦力大小取决于定位盘与转盘接触部分的材料的摩擦系数。随着帘体的下拉或者上推，转盘随着安装有卷帘的卷筒旋转，转盘与定位盘接触的位置在运动过程中会有变化，由于定位盘材料的不同，摩擦力因为接触位置的不同也会产生变化。选择不同的定位盘的材料能确定不同的摩擦系数，从而确定不同的摩擦力，适应自锁需求。
作为另一种优选，所述的刹车装置包括转盘和在转盘内的定位盘，定位盘与转盘之间设有至少一个摩擦件，定位盘与转盘之间相对转动，刹车装置的摩擦力由两部分组成，其中一部分是由转盘与摩擦件之间的摩擦力提供，另外一部分是由转盘与定位盘之间的摩擦力提供，转盘与定位盘之间的摩擦力大于等于零。刹车装置的摩擦力大小是通过调整转盘与定位盘之间的相对角度实现的。设置摩擦件可以方便通过更换来调整摩擦力，并且磨损后也可以快速更换，成本低。摩擦件可以为一个固定在定位盘中的摩擦圈。
在卷帘的刹车装置进行安装时，转盘与定位盘是同心安装的，在转盘插入到卷筒的端部后，由于卷筒上帘布的重力，给转盘一个向下的压力，转盘和定位盘产生偏心，从而让转盘与定位盘或者摩擦件相接触，从而形成刹车装置的摩擦力。
作为优选，定位盘与摩擦件的摩擦系数不同。旋转转盘，转盘与定位盘和摩擦件之间均有接触，定位盘和摩擦件的摩擦系数不同，从而转盘与定位盘之间的摩擦力和转盘与摩擦件之间的摩擦力不同，转盘在不同角度时，与定位盘和摩擦件接触的面积不同，从而让刹车装置的摩擦力不同。定位盘与转盘之间的摩擦力也许大于转盘与摩擦件之间的摩擦力，也可以定位盘与转盘之间的摩擦力小于转盘与摩擦件之间的摩擦力。
作为优选，所述的刹车装置还包括：第一定位板，第一定位板与定位盘相连，转盘与定位盘间隙配合，转盘远离定位盘的一端与卷筒固定相连。所述的第一定位板上设置有定位柱，定位盘上设置有与定位柱相配合的定位孔。定位盘安装以后通过定位柱与定位孔的配合，使得定位盘是不能旋转的。定位柱可以是圆形的柱体，柱体的外圆周表面均布有卡凸，定位孔设置成相应的形状。当然定位柱也可以是多边形等形状。
作为优选，还包括用于调节卷簧预紧力的调节装置，调节装置包括：与卷簧一端固定相连的固定筒，与卷簧另一端固定相连的调节盘，固定筒位于卷筒内并与卷筒固定，调节盘固定在卷筒端部。调节装置还包括与调节盘配合的定位片和第二定位板。固定筒与卷筒固定，固定筒与卷筒同步旋转，从而让卷簧的一端卷绕，产生不同的扭力。卷簧的另一端固定在调节盘上，调节装置安装到卷帘上以后，调节盘就是固定在第二定位板上，调节盘是固定不动的。
作为优选，所述的调节盘位于卷筒外部且能够正面手动调节或用工具调节。调节盘的调节装置位于卷筒和第二定位板之间。
作为优选，所述的固定筒和调节盘之间设有定位杆，卷簧套接在定位杆上。定位杆支撑卷簧，同时可以确定固定筒与调节盘之间的距离，方便对固定筒进行定位。
作为优选，所述的调节盘边缘分布有卡齿，定位片上设置有与卡齿相配合的卡柄。选择卡齿卡住的位置，来调节卷簧的初始位置，从而确定扭力。
作为优选，在刹车装置内的第一定位板和调节装置内的第二定位板之间设置有安装板。安装板的设置方便刹车装置和调节装置的一体式安装，就是将安装板两侧的刹车装置和调节装置分别预安装完成后，再整体装配到卷帘上。卷簧也可以预先调节安装预紧。
作为优选，第一定位板和第二定位板上均设置有与插槽配合的插脚。通过插脚与插槽的配合来完成第一定位板和第二定位板的相对位置。
作为优选，所述的帘体包括帘布和位于帘布下端的底杆。
因此，本发明的无绳卷帘具备下述优点：整个卷帘能够根据实际的使用需要下拉帘体，下拉至所需位置后，能够实现自动锁止，锁止过程中，卷簧的扭矩、转盘与定位盘的摩擦力、帘体下垂部分的重力达到平衡，避免卷帘其他部件受到载荷。
附图说明
附图1是本发明的一种结构示意图；
附图2是图1去除帘体的剖视图；
附图3是本发明中刹车装置的爆炸图；
附图4是图3中的转盘和定位盘配合后的剖视图；
附图5是本发明中调节装置的爆炸图。
图示说明：1-卷筒，2-帘体，3-安装板，4-刹车装置，5-调节装置，6-第一定位板，7-定位盘，8-定位槽，9-摩擦圈，10-转盘，11-定位柱，12-卡凸，13-定位孔，14-调节盘，15-卡齿，16-定位片，17-卡柄，18-第二定位板，19-插脚，20-定位杆，21-固定筒，22-底杆，23-卷簧，24-连接盘，25-连接柱。
具体实施方式
下面通过实施例，并结合附图，对本发明的技术方案作进一步具体的说明。
实施例1：
如图1所示，一种无绳卷帘，包括内部设置有卷簧的卷筒1以及卷绕在卷筒上的帘体2，帘体是由帘布和位于帘布下端的底杆构成。还包括：用于实现卷筒旋转和自锁的刹车装置4，刹车装置位于卷筒的一端；用于调节卷簧预紧力的调节装置5，调节装置位于卷筒的另一端，当然调节装置有可以布置在与刹车装置的相同端。
如图2和3和4所示，刹车装置包括：与卷筒轴线垂直相连的第一定位板6、与第一定位板固定连接的定位盘7以及套设在定位盘外侧的转盘10，转盘与定位盘间隙配合。转盘包括一体成型的连接盘24和连接柱25，连接盘24套在定位盘7外，连接柱25外表面均布有凸起，连接柱25插接在卷筒1内，通过凸起与卷筒内壁固定，从而让转盘10与卷筒1同步旋转。
在第一定位板6的下方一体成型有定位柱11，定位柱11外圆周表面一体成型有卡凸，在定位盘7的定位孔的形状与定位柱的形状相同，从而保证将定位盘7固定在第一定位板6上。在定位盘的端面上开设有定位槽8，定位槽呈“U”形，在定位槽内安装有摩擦圈。定位盘与摩擦圈采用不同的材质，两者的摩擦系数不同。
在安装时，定位盘7与转盘10同心布置。将转盘10插接到卷筒1内后，由于卷筒1上卷绕有帘体2，由于帘体的重力，使得转盘受压力，从而转盘与定位盘产生一定的偏心，转盘10与定位盘7和定位盘上的摩擦圈9接触，接触部分L的长度决定了摩擦力的大小。
如图5所示，调节装置包括：卷簧23，卷簧23的一端固定在固定筒21上，卷簧23的另一端固定在调节盘14上，调节盘14的外圆周表面一体成型有卡齿15，在调节盘的一侧布置有卡柄，卡柄上一体成型有定位片16，通过定位片卡住卡齿，让调节盘不能转动。固定筒21和调节盘14之间通过定位杆20相连，卷簧套接在定位杆20上。固定筒21位于卷筒1内，固定筒21与卷筒1同步旋转，从而将带动卷簧23的一端扭转，产生扭力。调节盘位于卷筒外，调节盘的外侧设置有第二定位板18，第二定位板上设有固定凸起，定位片16固定在第二定位板18上。同时，第二定位板18的下方还有圆形定位柱，在调节盘的中心开设有定位孔，调节盘与第二定位板通过定位柱和定位孔的配合连接在一起。
第一定位板6和第二定位板18通过安装板3相连，在第一定位板6和第二定位板18上一体成型有插脚19，插脚19插接在安装板内，从而将第一定位板、第二定位板与安装板连接在一起。
刹车装置和调节装置在安装到卷帘上之前，先进行预安装和调节。刹车装置的定位盘和转盘同心布置，卷簧的初始扭力设置好，将定位片卡紧调节盘上的卡齿，刹车装置安装在第一定位板上，调节装置安装在第二定位板上，然后将第一定位板和第二定位板通过安装板连接后，整体安装到卷帘上。
转盘的端部插接到卷筒的一端，固定筒插接到卷筒的另一端。由于卷筒上的帘体的重量，将转盘压向定位盘，产生偏心，转盘和定位盘及定位盘上的摩擦件接触部分由于压力作用产生摩擦力，刹车装置的最大静摩擦力是不变的。在没有外力作用下，卷簧的扭力、刹车装置提供的摩擦力和帘体下垂部分的重力三者相互平衡，帘体静止。
在需要对帘体进行上推或者下来调整位置时，对帘体施加了一个外力，破坏了平衡状态，外力大于最大静摩擦力，让帘体可以调整，在帘体卷绕过程中摩擦力是可变的，外力推动帘体向上运动时，作用在刹车装置上的压力随着外力抵消帘体的重力和的作用而减小，摩擦力相应减小，卷簧的扭力带动帘体向上卷绕。当调整到位后，外力消失，由于摩擦力的作用，卷簧的扭力、刹车装置提供的摩擦力和帘体下垂部分的重力三者再次达到相互平衡，帘体静止
帘体通过卷筒卷绕，当帘体不需要下拉时，向上推动底杆，卷簧能够带动卷筒回转，卷绕并回收帘体。当帘体需要下拉时，只需拉动帘体本身，便可以使帘体下拉至所需位置，当 位置确定后，卷簧的扭矩、转盘与定位盘的摩擦力、帘体下垂部分的重力达到平衡，使帘体自动锁止在所需位置处。而且当使用一段时间之后，卷簧松紧程度发生变化，能够根据调节装置来调节卷簧的预紧力，保证预紧力刚好能够提供卷筒回转。整个卷帘能够根据实际的使用需要下拉帘体，下拉至所需位置后，能够实现自动锁止，锁止过程中，卷簧的扭矩、转盘与定位盘的摩擦力、帘体下垂部分的重力达到平衡，避免卷帘其他部件受到载荷。利用第一定位板来固定定位盘和转盘，转盘套设在定位盘外侧并与定位盘间隙配合，当下拉帘体时，帘体带动卷筒旋转，卷筒能够带动转盘相对于定位盘转动。当帘体下拉至所需位置时，松开帘体，帘体的重力作用在转盘上，使转盘受到向下的拉力，此时，转盘与定位盘发生偏心，当转盘与定位盘偏心时，转盘内壁与定位盘和摩擦圈紧密接触产生摩擦力，卷簧的扭矩、转盘与定位盘的摩擦力、帘体下垂部分的重力达到平衡，使转盘和卷筒停止旋转，帘体自锁在所需位置处。当需要回收帘体时，只需由下向上轻抬帘体，帘体的重力减小，转盘所受的下拉力减小，转盘与定位盘趋近同心，转盘与定位盘之间的摩擦力减小，此时卷簧的扭矩能够带动卷筒回转并收回帘体。整个装置通过转盘受到帘体重力的大小不同，转盘与定位盘之间的偏心方向不同，定位盘、摩擦件与转盘内壁之间的摩擦力不同，卷簧的扭矩的不同来实现帘体的自锁和回收。定位盘端面上设置定位槽，在定位槽处设置摩擦圈，当摩擦圈嵌设在定位槽内时，摩擦圈远离定位盘轴线的一侧具有一段裸露在定位槽之外的部分，这一部分可以凸出于定位盘的边缘，能够利用这个凸出部分来实现转盘与定位盘不同偏心位置时与转盘内壁的摩擦。定位槽呈“U”形，当摩擦圈嵌入定位槽内后，“U”形的定位槽的开口处正好是摩擦圈凸出于定位盘的部分。第一定位板上垂直于第一定位板设置有定位柱，定位柱的外表面径向设置若干个卡凸，而且卡凸沿着定位柱的轴线设置并围绕定位柱的轴线分布，在定位盘上设置定位孔，当定位柱插入定位孔内时，定位孔能够通过卡凸对定位柱限位，来实现第一定位板与定位盘之间的同轴固定，在转盘相对定位盘转动时能够保证定位盘与第一定位板相对静止。调节装置包括调节盘和定位片，调节盘和定位片通过第二定位板连接在一起。调节盘外边缘分布有卡齿，在定位片上设置与卡齿相配合的卡柄，卡柄相对于第二定位板是静止状态，当需要加紧卷簧的预紧力时，只需转动调节盘，利用卡齿在动卷簧旋转加紧卷簧的预紧力，此时，卡柄并不会对卡齿造成限位干涉，当调节完成后，松开调节盘，调节盘反转的扭矩作用在卡齿上，卡柄支撑在卡齿处对卡齿限位，实现卷簧预紧力的固定。当需要放松卷簧的预紧力时，只需将定位片转动并拨离调节盘，卡柄与卡齿脱离，卷簧带动调节盘反转并放松卷簧预紧力。卷簧卷绕在定位杆上，卷簧的一端固定在调节盘上、另一端固定在固定筒上，利用固定筒与调节盘之间的相对转动差来扭动卷簧。刹车装置和调节装置之间设置有 安装板，通过安装板能够实现卷帘与墙面或者天花板之间的固定，而且能够利用安装板来实现刹车装置和调节装置之间的固定，增强刹车装置和调节装置的同轴性，避免刹车装置和调节装置扭矩相反时造成卷筒两端扭矩不协调。帘体下端设置有底杆，利用底杆不仅能够便于手持拉动帘体，而且能够利用底杆来增大帘体重量，便于调节帘体自重与摩擦装置产生的摩擦力和卷簧产生的扭矩之间的配合关系。帘体下垂的一侧可以是靠近窗户的一侧，也可是远离窗户的一侧，根据实际安装需要进行调整，与此同时，根据帘体下垂的一侧的方向不同，来调整刹车装置的位置。

Claims (18)

  1. 一种无绳卷帘，包括内部设置有卷簧的卷筒以及卷绕在卷筒上的帘体，其特征在于，还包括：
    至少一个刹车装置；卷簧的扭力随着卷筒旋转而变化，卷簧的扭力、刹车装置提供的摩擦力和帘体下垂部分的重力三者相互平衡，帘体在没有外力作用下在任何位置静止。
  2. 根据权利要求1所述的无绳卷帘，其特征在于，刹车装置的摩擦力能够调节，刹车装置内的摩擦力根据不同帘体的重量不同而进行调整。
  3. 根据权利要求1所述的无绳卷帘，其特征在于，刹车装置的摩擦力在帘体卷绕过程中是可变的，外力推动帘体向上运动时，作用在刹车装置上的压力随着外力抵消帘体的重力而减小，摩擦力相应减小，卷簧的扭力带动帘体向上卷绕。
  4. 根据权利要求1所述的无绳卷帘，其特征在于，所述的刹车装置包括转盘和在转盘内的定位盘，定位盘与转盘之间相对转动，刹车装置的摩擦力由转盘与定位盘受力接触后，转盘与定位盘之间的摩擦力提供。
  5. 根据权利要求4所述的无绳卷帘，其特征在于，所述的定位盘是由一种或者一种以上的摩擦系数的耐磨材料组成，定位盘与转盘之间的摩擦力大小取决于定位盘与转盘接触部分的材料的摩擦系数。
  6. 根据权利要求1所述的无绳卷帘，其特征在于，所述的刹车装置包括转盘和在转盘内的定位盘，定位盘与转盘之间设有至少一个摩擦件，定位盘与转盘之间相对转动，刹车装置的摩擦力由两部分组成，其中一部分是由转盘与摩擦件之间的摩擦力提供，另外一部分是由转盘与定位盘之间的摩擦力提供，转盘与定位盘之间的摩擦力大于等于零。
  7. 根据权利要求6所述的无绳卷帘，其特征在于，刹车装置的摩擦力大小是通过调整转盘与定位盘之间的相对角度实现的。
  8. 根据权利要求6所述的无绳卷帘，其特征在于，定位盘与摩擦件的摩擦系数不同。
  9. 根据权利要求1所述的无绳卷帘，其特征在于，所述的刹车装置还包括：第一定位板，第一定位板与定位盘相连，转盘与定位盘间隙配合，转盘远离定位盘的一端与卷筒固定相连。
  10. 根据权利要求9所述的无绳卷帘，其特征在于，所述的第一定位板上设置有定位柱，定位盘上设置有与定位柱相配合的定位孔。
  11. 根据权利要求1至10任意一项所述的无绳卷帘，其特征在于，还包括用于调节卷簧预紧力的调节装置，调节装置包括：与卷簧一端固定相连的固定筒，与卷簧另一端固定相连的调节盘，固定筒位于卷筒内并与卷筒固定，调节盘固定在卷筒端部。
  12. 根据权利要求1至10任意一项所述的无绳卷帘，其特征在于，调节装置还包括与调节盘 配合的定位片和第二定位板。
  13. 根据权利要求11所述的无绳卷帘，其特征在于，所述的调节盘位于卷筒外部且能够正面手动调节或用工具调节，调节盘的调节结构位于卷筒和第二定位板之间。
  14. 根据权利要求11所述的无绳卷帘，其特征在于，所述的固定筒和调节盘之间设有定位杆，卷簧套接在定位杆上。
  15. 根据权利要求11所述的无绳卷帘，其特征在于，所述的调节盘边缘分布有卡齿，定位片上设置有与卡齿相配合的卡柄。
  16. 根据权利要求1至10任意一项所述的无绳卷帘，其特征在于，在刹车装置内的第一定位板和调节装置内的第二定位板之间设置有安装板。
  17. 据权利要求16所述的无绳卷帘，其特征在于，安装板上设置有插槽，第一定位板和第二定位板上均设置有与插槽配合的插脚。
  18. 根据权利要求1至10任意一项所述的无绳卷帘，其特征在于，所述的帘体包括帘布和位于帘布下端的底杆。
PCT/CN2018/105199 2018-02-09 2018-09-12 无绳卷帘 WO2019153740A1 (zh)

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