WO2017177588A1 - 一种无绳百叶帘及其工作方法 - Google Patents

一种无绳百叶帘及其工作方法 Download PDF

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Publication number
WO2017177588A1
WO2017177588A1 PCT/CN2016/095294 CN2016095294W WO2017177588A1 WO 2017177588 A1 WO2017177588 A1 WO 2017177588A1 CN 2016095294 W CN2016095294 W CN 2016095294W WO 2017177588 A1 WO2017177588 A1 WO 2017177588A1
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WO
WIPO (PCT)
Prior art keywords
ratchet
drawstring
shaft
venetian blind
spring
Prior art date
Application number
PCT/CN2016/095294
Other languages
English (en)
French (fr)
Inventor
周伟坚
胡延纲
Original Assignee
周伟坚
胡延纲
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 周伟坚, 胡延纲 filed Critical 周伟坚
Publication of WO2017177588A1 publication Critical patent/WO2017177588A1/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
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/02—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses
    • E06B7/08—Louvre doors, windows or grilles
    • 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
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • 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
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • 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
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/32—Operating, guiding, or securing devices therefor
    • 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
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/32—Operating, guiding, or securing devices therefor
    • E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives
    • 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
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/32—Operating, guiding, or securing devices therefor
    • E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives
    • E06B2009/3222—Cordless, i.e. user interface without cords
    • 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
    • E06B9/26—Lamellar or like blinds, e.g. venetian blinds
    • E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
    • E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
    • E06B9/32—Operating, guiding, or securing devices therefor
    • E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives
    • E06B2009/3225—Arrangements to aid the winding of cords rollers

Definitions

  • the present invention relates to the field of venetian blinds, and in particular to a cordless venetian blind and a working method thereof.
  • a conventional venetian blind is composed of a blade set, an upper beam, a lower beam, a drawstring, a lock, a ladder belt, and a ladder belt steering gear, and a lock and a ladder steering gear are placed in the upper beam. Due to the limitations of the system and the transmission mode, the drawstring actually exceeds the actual length of the curtain after the curtain is closed, and the traditional blinds generally have at least two drawstrings. The ropes are easily placed and knotted to form a ring. accident. Although there are currently broken devices for improvement and rope clamps, the problem cannot be solved at all. According to EU Directive 2011/477/EU: Curtain ropes or chains must not form a dangerous loop. Design products should provide appropriate safety devices to reduce the risk of suffocation.
  • the versatility of the spring between the venetian blinds is poor; due to the large changes in the material and size of the venetian blinds, the production of venetian blinds often requires the purchase of a variety of springs; even if the appropriate springs are selected according to the specifications of the venetian blinds, due to the process in mass production Assembly and use are prone to frictional uncertainty, and resilience is easy to occur after assembly Wiping force, the case does not match the gravity; inch since the life of the same reasons, the length between the spring force is weakened using inches, since the repulsive force is likely to cause insufficient Venetian caused by not hovering.
  • Chinese Patent No. CN 2822440Y is a balanced structure without a drawstring curtain, which discloses a technical scheme for changing the weight of the lower rail by using a counterweight method, ensuring that the same curtain is completely snored in the curtain after the width of the same system is changed. It will not rebound afterwards; the technical solution has higher requirements on the weights, and is in mass production and After using the long squat, there will be a problem of just snoring or the last smashing of the last snoring.
  • Chinese Patent No. CN 205036272U is a brakeless winding of a cordless blind and a track without a drawstring blind. It has announced a technical solution to increase the friction of the drawstring by adding a wrap around the string. The retracting force is less than the gravity of the lower beam. Without increasing the weight of the lower rail (increasing the weight of the lower rail, the cost will increase accordingly), the curtain will be felt upward when the curtain is lifted upwards, resulting in poor curtain recovery.
  • Chinese Patent No. CN 204299434 U is a brake-type cordless blinds, which discloses a technical scheme for controlling the action of the shrapnel with a button and a return spring;
  • Chinese Patent No. CN 201137449 For a cordless blinds under the rail, it discloses a technical scheme for controlling the blinds to be retracted by using a shut-off device; both of the above technical solutions require manual shutting, and the mechanical structure is relatively complicated and costly. Higher.
  • the technical problem to be solved by the present invention is to provide a cordless venetian blind which is flexible, easy to adjust, and unrestricted in spring selection.
  • the present invention provides a cordless venetian blind, the cordless venetian blind comprising: an upper beam, a lower beam, a plurality of elongated blades, a drawstring, a source power output for providing a resetting power An assembly, a total output shaft, a spring is disposed in the source power output assembly, and the source power output assembly is fixedly connected to the total output shaft, and is configured to lift a pull cord of the blade through each blade, The bottom end of the drawstring is fixedly coupled to the lower beam; the cordless venetian blind further includes a ratchet assembly that provides rolling friction to the drawstring at the puller of the louver, and a ratchet assembly that provides static friction to the drawstring, the ratchet assembly including a ratchet that is unidirectionally rotatable a pawl for restricting reverse rotation of the ratchet, the ratchet fixedly coupled with a ratchet shaft, the drawstring passing through
  • the pulling force can complete the pull-down of the curtain; remove the pull-down force on the lower beam, the ratchet cannot rotate in the reverse direction due to the presence of the pawl, and the friction between the pull rope and the ratchet shaft is changed from rolling friction to static friction, because the rope is wound
  • the frictional force on the cylinder, the frictional force is greatly enhanced, and the frictional force range is far greater than the spring rebound force and the downward gravity of the venetian blind (the weight of the blade and the lower beam) balance the force required to make the lower beam of the venetian blind Keep the blade stationary and the balance is not easy to be destroyed; the venetian blind needs to be put away, only the upper beam needs to be applied to the lower beam so that the lower beam is in the position where it is desired to stop.
  • the cordless venetian blind further includes a ladder belt for adjusting a blade angle, and the ladder shaft deflector for adjusting a direction of the ladder belt is sleeved on the total output shaft, and the bottom end of the ladder belt is The lower beam is fixedly connected, and the top end of the ladder belt is wound around the ladder steering gear to facilitate adjusting the angle of the blade.
  • the source power output assembly further includes a spring case, a spring drive shaft, and a spring driven shaft that can be rotated and matched with the spring drive shaft.
  • the spring drive shaft and the spring passive shaft are disposed at the center.
  • the spring case the spring is disposed in the spring drive shaft, and the spring case is further provided with a spring box cover, the bullet
  • the spring box cover is provided with a through hole adapted to pass through the total output shaft such that the total output shaft is fixedly coupled to the spring driven shaft through the through hole for powering the total output shaft.
  • the cordless venetian blind further includes a drawstring winding rod for winding and fixing the top end of the drawstring, the drawstring winding rod is sleeved on the total output shaft, and the drawstring is wound
  • the rod is arranged in a cylindrical shape to reduce the resistance of the rope to lateral displacement on the drawstring of the drawstring.
  • the diameter of the outlet end of the drawstring of the drawstring is gradually reduced from the outside and the inside, so that the drawstring is arranged in an orderly manner.
  • the cordless venetian blind further includes a wrapper sleeve adapted to the shape of the drawstring wrap, and the drawstring wrap is provided with a card slot adapted to pass the drawstring. The top end of the drawstring is caught in the card slot, and the winder wrap is inserted into the end of the drawstring bar so that the drawstring is clamped in the card slot.
  • the ratchet is a single-acting outer-engagement ratchet mechanism
  • the cordless venetian blind further includes a mounting seat for mounting the cable reel and a ratchet mounting for mounting the ratchet assembly
  • the ratchet of the ratchet a second pivot is disposed in the axle
  • the ratchet is rotatably engaged in the ratchet mount by a second pivot
  • the ratchet mount is disposed on a lower side of the outlet end of the drawstring of the drawstring in the mount
  • the pawls that prevent the ratchet from rotating in the opposite direction are disposed on opposite sides of the ratchet.
  • the ratchet mechanism uses this principle to amplify the frictional resistance of the blinds of the venetian blinds, thereby more effectively ensuring that the venetian blinds are arbitrarily
  • the stop of the position will not fail, and the resistance of the venetian blind will be less than the resistance of the static squat, which is very good to ensure that it can easily contract upwards.
  • the cordless venetian blind further includes a guide pulley disposed on an opposite outer side of the ratchet, the guide pulley being rotatably fitted in the ratchet mount by a first pivot to facilitate sliding of the drawstring.
  • the upper beam is provided with a U-shaped groove
  • the source power output assembly is disposed at one end of the upper beam
  • the pulling wire bar and the total output shaft are disposed in the U-shaped groove of the upper beam.
  • the cordless venetian blind further includes a diverter mount for mounting the ladder diverter for mounting and restricting the ladder diverter.
  • the bottom end of the drawstring wound on the ratchet shaft is pierced from the opposite inner side of the ratchet shaft, and each of the blades is provided with a corresponding through slot through which the pull cord is disposed in the cordless venetian blind Between the end of the ladder belt, the drawstring is concealed between the two ladder belts, which has good concealment, high safety and beautiful appearance.
  • the working method of the above cordless venetian blind comprises the following steps: [0022] A, the venetian blind needs to be smashed, and the lower beam of the cordless venetian blind is pulled down by hand, the pulling rope is tightened and moved downward, and due to the frictional force, the pulling rope drives the guiding pulley, the ratchet and the pulling rope to wind around.
  • the wire rod, the total output shaft, the spring driven shaft, and the spring driving shaft rotate synchronously, and the respective vanes are diverged downward, and the spring in the active shaft of the spring is deformed, and the friction provided by the ratchet assembly for the pulling rope is rolling friction.
  • the venetian blind needs to be retracted, applying a lifting force to the lower beam to make the lower beam at the position where it is desired to stop, at this moment the pulling rope is loosened, the static friction between the pulling rope and the ratchet shaft disappears, the spring Resetting, driving the spring drive shaft, the spring driven shaft, the total output shaft, and the drawstring winding rod to rotate synchronously, so that the excess drawstring is once again wound around the drawstring winding bar.
  • the venetian blind is put up to the predetermined position ⁇ , the upper supporting force on the lower beam is removed, the pulling rope is in a tight state, the static friction between the pulling rope and the ratchet shaft is restored, and the rebounding force of the spring is less than the pulling rope and the spine The friction between the axles, the lower beams of the venetian blinds and the blades remain stationary again.
  • the limitation of the assembly conditions makes it possible to select and match the springs according to the size of the venetian blinds and the surface quality of the parts, and solve the problem that the curtains of different specifications need to be paired with the appropriate springs in a small specification range.
  • the spring can be interchanged, increased or decreased, and can adapt to any curtain width and length of curtains. It does not need to adjust the spring force and the lower beam load, which improves the interchangeability of the spring, greatly improves the production efficiency and reduces the production cost.
  • the resilience can be selected.
  • the larger spring solves the venetian blind caused by the failure of the spring after the venetian blind is used for a period of time. The problem of failure of retraction and release, the service life is greatly improved; (2) The two ends of the drawstring are concealed in the upper beam and the lower beam, and there is no drawstring outside the venetian blind to avoid a safety accident.
  • FIG. 1 is a perspective exploded perspective view of a cordless venetian blind of the present invention
  • FIG. 2 is a schematic view showing the assembly of the drawstring, the drawstring bar, the ratchet and the guide pulley of the present invention
  • Figure 3 is a left side view of Figure 2;
  • FIG. 4 is a schematic view showing the assembly of the drawstring, the drawstring bar, the ratchet, the ratchet mount, and the guide pulley of the present invention
  • FIG. 5 is a schematic view showing the assembly of the ratchet, pawl, and ratchet mount of the present invention
  • Figure 6 is a schematic perspective view of the drawstring of the drawstring of the present invention.
  • FIG. 7 is a perspective exploded structural view of a source power output assembly of the present invention.
  • the cordless venetian blind comprises an upper beam 1, a lower beam 2, a plurality of elongated blades 4, a drawstring 5, a source power output assembly 7 for providing a resetting power, and a total output.
  • a spring driven shaft 74 that cooperates with the spring driving shaft 72.
  • the spring driving shaft 72 and the spring driven shaft 74 are rotatably driven to rotate with each other in the spring case 71.
  • the spring case 71 is further provided with a spring case cover 75.
  • the spring box cover 75 is provided with a through hole 76 adapted to pass the total output shaft 8 such that the total output shaft 8 is fixedly coupled to the spring driven shaft 74 through the through hole 76.
  • the cordless venetian blind further comprises three sets (other embodiments may be adjusted according to the size of the venetian blind).
  • the through slots are disposed between the ladder belts 6, and the pull cords 5 sequentially pass through the through slots of the blades 4 such that the drawstrings 5 are concealed between the ladder belts 6; the total output shaft 8 is sleeved for
  • the ladder belt deflector 11 is adjusted in the direction of the ladder belt (other embodiments can be adjusted according to the size of the venetian blind), the bottom end of the ladder belt 6 is fixedly connected to the lower beam 2, and the top end of the ladder belt 6 is wound around the ladder belt deflector 11.
  • the ladder steering gear 11 is mounted in the steering gear mount 10 for adjusting the angle of each of the blades 4.
  • the drawstring winding bar 12 is disposed in a cylindrical shape, and the drawstring wire bar 12 is mounted in the mount 9, and the end of the drawstring wire bar 12 is provided for the passage of the drawstring 6
  • the card slot 121, the diameter of the outlet end 122 of the cord take-up bar 12 is gradually reduced from the outside and the inside, and the number of the drawstring bar 12 is two (other embodiments can be adjusted according to the size of the venetian blind), the drawstring 5 is 2 (other embodiments can be adjusted according to the size of the venetian blind), the ladder belt deflector 11 and the drawstring winding rod 12 are sequentially sleeved on the total output shaft 8, and the two drawstring winding rods 12 are mirror images.
  • the arrangement may cause the winding bar outlet ends to be placed in the same order) so that the outlet ends 121 of the drawstring winding bars 12 are disposed at both ends of the total output shaft 8.
  • the pull cordless venetian blind further includes a ratchet assembly including a single-acting outer engagement ratchet mechanism 15 (other embodiments may be an inner engagement ratchet mechanism), and a pawl for restricting the ratchet 15 from rotating in the reverse direction. 1 .
  • the guide pulley 14 , the ratchet wheel 15 is fixedly connected with the ratchet shaft 151 , the second pivot 19 is disposed in the ratchet shaft 151 of the ratchet 15 , and the ratchet 15 is rotatably fitted in the ratchet mount 17 through the second pivot 19 , the ratchet mount 17 is disposed on the lower side of the outlet end 122 of the cord take-up bar 12 in the mount 9, and the pawl 16 for preventing the ratchet 15 from rotating in the opposite direction is disposed on the opposite inner side of the ratchet 15, and the guide pulley 14 is rotated by the first pivot 18.
  • the ratchet mount 17 is fitted, and the guide pulley 14 is disposed on the opposite outer side of the ratchet 15.
  • the top end of the drawstring 5 is fixed in the slot 121 of the drawstring winding bar 12, and is wound on the drawstring winding bar 12 by a predetermined number of turns.
  • the outlet end 122 enters the ratchet shaft 151 and is wound around the ratchet shaft 151.
  • the bottom end of the drawstring 5 wound on the ratchet shaft 151 is passed out from the opposite inner side of the ratchet shaft 151 and then passed through the pulley 14, and sequentially passes through The through groove of each blade 4, the bottom end of the drawstring 5 is fixedly connected to the lower beam 2, and both ends of the lower beam 2 are packaged using the lower envelope 3.
  • the upper beam 1 is provided with a U-shaped groove, and the source power output assembly 7 is disposed at one end of the upper beam 1 (other embodiments can be driven by a plurality of source power output assemblies according to the size of the venetian blind), the mounting seat 9, the ratchet mounting Seat 17, the steering gear mount 10 is correspondingly disposed in the U-shaped groove to prevent direct contact between it and the upper beam 1 to cause wear.
  • the cordless venetian blind of the present invention is matched with a ratchet, a pawl, a ratchet shaft and a drawstring by one-way rotation,
  • the curtain pull-down ⁇ provides rolling friction, provides static friction when the venetian blind is stationary, lifts the friction on the venetian blind, and realizes the pull-down and lifting of the venetian blind at any position. Because of the large difference between static friction and rolling friction, the spring back The elastic force can be free from the weight of the venetian blind and the assembly conditions. It is not necessary to select and match the spring according to the size of the venetian blind and the surface quality of the parts. It solves the need for springs of different specifications to match the appropriate springs in a small specification range.
  • the problem is that the springs between the curtains of different specifications can be interchanged, increased or decreased, and can adapt to the curtains of any curtain width and length. It does not need to adjust the spring force and the weight of the lower beam, which improves the interchangeability of the spring, greatly improves the production efficiency and reduces
  • the production cost can be selected; the spring with large resilience can be selected to solve the problem that the venetian blind is retracted and discharged due to the failure of the spring after the venetian blind is used for a period of time, and the service life is greatly improved; the two ends of the drawstring are concealed at In the upper and lower beams, there is no drawstring on the outside of the blinds to avoid safety accidents.
  • the method for using the above-mentioned pull cordless venetian blind comprises the following steps:
  • the venetian blind needs to be smashed, and the lower beam 2 of the cordless venetian blind is pulled down by hand, the pull cord 5 is tightened and moved downward, and the pulling rope 5 drives the guiding pulley 14 and the ratchet due to the frictional force.
  • the drawstring winding rod 12, the total output shaft 8 , the spring driven shaft 74 , and the spring drive shaft 72 rotate synchronously, and the respective vanes are diverged downward, and the spring 73 in the spring drive shaft 72 is deformed, and the drawstring is
  • the friction between the ratchet assemblies is rolling friction.
  • the pull-down force on the lower beam is removed, the ratchet 15 cannot rotate in the reverse direction due to the presence of the pawl 16, and the friction provided by the ratchet assembly ratchet shaft 151 for the pull cord 5 is changed from rolling friction to static friction, and the friction is greatly increased.
  • the spring 73 has a rebounding force that is less than the friction between the drawstring 5 and the ratchet shaft 151, such that the lower beam 2 and the blades 4 of the venetian blind remain stationary.
  • ratchet a ratchet shaft, a pawl and a drawstring
  • the use of a ratchet, a ratchet shaft, a pawl and a drawstring allows the venetian blind to provide resistance when resistance is required, This force can be removed or reduced when it is not needed.
  • the selection of the spring no longer limits the weight of the venetian blind.
  • the venetian blind is easy to handle.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Architecture (AREA)
  • Blinds (AREA)

Abstract

一种无绳百叶帘及其工作方法，包括上梁（1）、下梁（2）、多个长条形叶片（4）、拉绳（5）、设有弹簧（73）的源动力输出总成（7）、总输出轴（8）和棘轮组件，源动力输出总成（7）与总输出轴（8）固定相连，拉绳（5）的底端与下梁（2）固定相连；棘轮组件包括棘轮（15）、用于限制棘轮（15）逆向旋转的棘爪（16），棘轮（15）固定连接有棘轮轴（151），拉绳（5）穿过棘轮轴（151）并在棘轮轴（151）上缠绕至少一周设置，拉绳（5）的顶端在总输出轴（8）上缠绕预设的圈数后固定在总输出轴（8）上。百叶帘下拉时提供滚动摩擦、百叶帘静止时提供静摩擦、上提时摩擦消失。

Description

发明名称： 一种无绳百叶帘及其工作方法
技术领域
[0001] 本发明涉及百叶窗帘技术领域， 具体是一种无绳百叶帘及其工作方法。
背景技术
[0002] 传统百叶帘由叶片组、 上梁、 下梁、 拉绳、 锁具、 梯带、 梯带转向器组成， 锁 具、 梯带转向器置于上梁中。 由于系统所限和传动方式所限， 拉绳实际在窗帘 收起后实际超过窗帘实际垂长， 并且传统百叶窗帘一般至少有两股拉绳， 绳索 任意放置很容易打结形成环状对儿童造成意外。 虽然目前有断幵装置进行改善 和绳索线夹， 但仍然不能根本解决问题。 根据欧盟第 2011/477/EU号决议要求： 窗帘绳索或链子不得形成一个危险的循环圈， 设计产品吋应提供相应的安全装 置以减少窒息风险。
[0003] 无拉绳窗帘将是解决上述问题的最好选择， 目前无拉绳窗帘一般以线簧或者片 簧作为源动力来对抗窗帘叶片重力和手施加的合力， 以摩擦力和窗帘重力作为 手施加的力撤离后的平衡力， 达到窗帘的幵合任意位置的即停效果， 由于百叶 帘在上下运动到任意位置即停后， 由于叶片数量发生变化， 造成叶片和下梁传 递到绳索的力也随之变化， 为适应此种变化， 这就要求弹簧回弹的力量和摩擦 力要在一个合适的范围内进行匹配， 由于叶片的质量较轻， 因此弹簧回弹力的 选择范围非常窄， 不同百叶帘之间弹簧的通用性较差； 由于百叶帘材质、 尺寸 的变化比较大， 百叶帘生产吋往往需要购买多种弹簧； 即使根据百叶帘规格选 取了合适的弹簧， 大批量生产中由于工艺装配和使用容易造成摩擦力的具有不 确定性， 装配后仍容易出现回弹力与摩擦力、 重力不匹配的情况； 同吋由于使 用寿命等原因， 弹簧长吋间使用后力量变弱， 由于容易造成百叶帘因回弹力不 足造成无法悬停。
[0004] 中国专利号 CN 2822440Y名称为无拉绳窗帘的平衡构造， 其公布了采用配重方 式改变下轨重量的技术方案， 保证同一幅窗帘在同一系统下宽度改变后， 在窗 帘完全打幵后不会回弹； 该技术方案对配重块的要求较高， 且在大批量生产和 长吋间使用后都会出现刚打幵一段的距离或者完全打幵的最后一段失效的问题
[0005] 中国专利号 CN 205036272U名称为无拉绳百叶窗帘制动绕组及无拉绳百叶窗帘 上轨， 其公布了采用增加绕柱的方式以增加拉绳摩擦力的技术方案， 由于拉绳 向上的回缩力量要小于下梁的重力， 在不增加下轨重量 （增加下轨重量会相应 增加成本） 的前提下， 向上收窗帘会感觉窗帘力量不足， 造成窗帘回收效果较 差。
[0006] 上述解决方案中， 百叶帘下拉状态和静止状态中拉绳的摩擦状态不变， 因此弹 簧回弹的力量和摩擦力要在一个合适的范围内进行匹配， 防止百叶帘失效。
[0007] 中国专利号 CN 204299434 U名称为一种可制动式无拉绳百叶窗帘， 其公布了 一种使用按钮和复位弹簧配合控制弹片吊绳机构作用的技术方案； 中国专利号 C N 201137449名称为一种无拉绳式百叶窗帘下轨， 其公布了一种使用幵关装置 控制百叶窗帘收放的技术方案； 上述两种技术方案都需要手动的进行幵关， 且 机械结构相对复杂， 成本较高。
[0008] 由于拉绳的上升和静止状态的受力需求相反， 为了获得较理想的回缩力量， 百 叶帘下拉吋， 由于人施加的下拉力量可调节， 因此弹簧力量可以足够较大， 无 需进行精确适配； 然而百叶帘静止吋， 为防止叶片下滑或收缩， 需要依靠弹簧 回弹力和百叶帘的重力的配合， 百叶帘施加在拉绳的重力随着百叶帘幵启程度 而变化， 同吋弹簧的回弹力会随着百叶帘的使用吋间发生变化， 由此造成了弹 簧的选择较为困难， 且弹簧的通用性较差， 需要根据百叶帘的尺寸、 零件表面 质量情况对弹簧进行挑选配对， 严重影响生产效率。
[0009] 因此需要寻找到一种机构， 使得百叶帘在需要阻力的吋候能够提供阻力， 不需 要的吋候此力又能撤去， 或者变小。
技术问题
[0010] 本发明所要解决的技术问题是提供一种收放灵活、 易于调节、 弹簧选择不受限 制的无绳百叶帘。
问题的解决方案
技术解决方案 [0011] 为了解决上述问题， 本发明提供了一种无绳百叶帘， 所述无绳百叶帘包括： 上 梁、 下梁、 多个长条形叶片、 拉绳、 用于提供复位动力的源动力输出总成、 总 输出轴， 所述源动力输出总成内设有弹簧， 所述源动力输出总成与所述总输出 轴固定相连， 用以提升叶片的拉绳穿过各叶片设置， 所述拉绳的底端与下梁固 定相连； 无绳百叶帘还包括在百叶帘下拉吋对拉绳提供滚动摩擦、 静止吋对拉 绳提供静摩擦的棘轮组件， 所述棘轮组件包括可单向旋转的棘轮、 用于限制棘 轮逆向旋转的棘爪， 所述棘轮固定连接有棘轮轴， 所述拉绳穿过所述棘轮轴并 在所述棘轮轴上缠绕至少一周设置， 该拉绳的顶端在所述总输出轴上缠绕预设 的圈数后固定在总输出轴上； 使用吋， 用手向下拉无绳百叶帘的下梁， 拉绳绷 紧且向下运动， 由于摩擦力的存在， 拉绳带动棘轮、 总输出轴、 源动力输出总 成同步旋转， 使得源动力输出总成内的弹簧发生形变， 棘轮组件为拉绳提供的 摩擦为滚动摩擦， 因此无需要施加更多额外抵抗摩擦阻力的拉力即可完成窗帘 的下拉； 撤去下梁上的下拉力吋， 由于棘爪的存在， 棘轮无法反向旋转， 拉绳 与棘轮轴之间的摩擦由滚动摩擦转为静摩擦， 由于绳索绕在圆柱上的摩擦力的 特性， 摩擦力大大增强， 此摩擦力范围远远大于弹簧反弹力和百叶帘向下的重 力 （叶片和下梁的重量） 平衡所需的力量， 使得百叶帘的下梁和叶片保持静止 ， 且平衡不易被破坏； 需要将百叶帘收起吋， 只需要对下梁施加上托力以使下 梁处于希望停止的位置， 在此瞬间拉绳松掉， 拉绳和棘轮轴之间的静摩擦消失 ， 弹簧复位， 带动所述源动力输出总成、 总输出轴同步旋转， 使得多余的拉绳 再次缠绕在总输出轴上； 百叶帘收起至预定位置吋， 撤去下梁上的上托力， 拉 绳绷紧， 拉绳和棘轮轴之间的静摩擦恢复， 百叶帘的下梁和叶片再次保持静止
[0012] 进一步， 所述无绳百叶帘还包括用于调整叶片角度的梯带， 所述总输出轴上套 接有用于调整梯带方向的梯带转向器， 所述梯带的底端与所述下梁固定相连， 所述梯带的顶端绕接在梯带转向器上， 便于调整叶片的角度。
[0013] 进一步， 所述源动力输出总成还包括弹簧盒、 弹簧主动轴、 与所述弹簧主动轴 可互相带动进行旋转配合的弹簧被动轴， 所述弹簧主动轴、 弹簧被动轴设在所 述弹簧盒内， 所述弹簧设于弹簧主动轴内， 该弹簧盒还设有弹簧盒封盖， 该弹 簧盒封盖上设有适于所述总输出轴通过的通孔， 以使所述总输出轴穿过所述通 孔与所述弹簧被动轴固定相连， 用于向总输出轴提供动力。
[0014] 进一步， 所述无绳百叶帘还包括用于缠绕和固定拉绳顶端的拉绳绕线棒， 所述 拉绳绕线棒套接在所述总输出轴上， 所述拉绳绕线棒呈圆柱形设置， 以减少绳 子在拉绳绕线棒上横向位移的阻力， 该拉绳绕线棒的出线端直径由外及内逐渐 减小， 便于拉绳有序排列。
[0015] 进一步， 所述无绳百叶帘还包括与所述拉绳绕线棒形状相适配的绕线棒封套， 所述拉绳绕线棒设有适于所述拉绳通过的卡槽， 所述拉绳的顶端卡在卡槽内， 所述绕线棒封套插入所述拉绳绕线棒的端部， 使得拉绳夹紧在卡槽内。
[0016] 进一步， 所述棘轮为单动外配合棘轮机构， 所述无绳百叶帘还包括用于安装拉 绳绕线棒的安装座和用于安装棘轮组件的棘轮安装座， 所述棘轮的棘轮轴内设 置第二枢轴， 所述棘轮通过第二枢轴转动配合在所述棘轮安装座内， 所述棘轮 安装座设置在所述安装座内拉绳绕线棒的出线端的下侧， 用于防止所述棘轮逆 向旋转的棘爪设置在所述棘轮的相对内侧。 由于拉绳绕在圆柱上的摩擦阻力大 小与绕线圈数、 摩擦系数、 施力大小成正相关， 棘轮机构正是利用此原理放大 百叶帘静止吋的摩擦阻力， 从而更有效的保证百叶帘在任意位置的停止都不会 失效， 并百叶帘向上运动吋阻力会比其静止吋的阻力要小， 很好的保证其能轻 松的向上收缩。
[0017] 进一步， 所述无绳百叶帘还包括设置在所述棘轮相对外侧的导向滑轮， 该导向 滑轮通过第一枢轴转动配合在所述棘轮安装座内， 利于所述拉绳滑动。
[0018] 进一步， 所述上梁设有 U形凹槽， 所述源动力输出总成设置在上梁的一端， 所 述拉绳绕线棒、 总输出轴设置在上梁的 U形凹槽内， 美观大方。
[0019] 进一步， 无绳百叶帘还包括用于安装梯带转向器的转向器安装座， 用于安装和 限制梯带转向器。
[0020] 进一步， 缠绕在棘轮轴上的拉绳的底端由棘轮轴的相对内侧穿出， 各叶片上设 有相应的贯穿槽， 拉绳穿过所述贯穿槽设置在所述无绳百叶帘端部的梯带之间 ， 使得拉绳隐蔽设置在两梯带之间， 隐蔽性好， 安全性高， 美观大方。
[0021] 上述无绳百叶帘的工作方法， 包括如下步骤： [0022] A、 需要将百叶帘打幵吋， 用手向下拉无绳百叶帘的下梁， 拉绳绷紧且向下运 动， 由于摩擦力的存在， 拉绳带动导向滑轮、 棘轮、 拉绳绕线棒、 总输出轴、 弹簧被动轴、 弹簧主动轴同步旋转， 各百叶片向下散幵， 此吋弹簧主动轴内的 弹簧发生形变， 棘轮组件为拉绳提供的摩擦为滚动摩擦。
[0023] B、 撤去下梁上的下拉力吋， 由于棘爪的存在， 棘轮无法反向旋转， 棘轮组件 为拉绳提供的摩擦由滚动摩擦转为静摩擦， 摩擦力大大增强， 弹簧的反弹力量 小于拉绳和棘轮轴之间的摩擦力， 使得百叶帘的下梁和叶片保持静止。
[0024] C、 需要将百叶帘收起吋， 对下梁施加上托力以使下梁处于希望停止的位置， 在此瞬间拉绳松掉， 拉绳和棘轮轴之间的静摩擦消失， 弹簧复位， 带动所述弹 簧主动轴、 弹簧被动轴、 总输出轴、 拉绳绕线棒同步旋转， 使得多余的拉绳再 次缠绕在拉绳绕线棒上。
[0025] D、 百叶帘收起至预定位置吋， 撤去下梁上的上托力， 拉绳处于绷紧状态， 拉 绳和棘轮轴之间的静摩擦恢复， 弹簧的反弹力量小于拉绳和棘轮轴之间的摩擦 力， 百叶帘的下梁和叶片再次保持静止。
发明的有益效果
有益效果
[0026] 发明的技术效果： （1) 本发明的无绳百叶帘， 相对于现有技术， 通过单向旋 转的棘轮、 棘爪、 棘轮轴与拉绳配合， 在百叶帘下拉吋提供滚动摩擦、 在百叶 帘静止吋提供静摩擦、 在百叶帘上提吋摩擦消失， 实现百叶帘任意位置的下拉 和上提， 由于静摩擦与滚动摩擦的差异较大， 因此弹簧的回弹力可以不受百叶 帘重量、 装配条件的限制， 无需根据百叶帘的尺寸、 零件表面质量情况对弹簧 进行挑选配对， 解决了不同规格的窗帘在很小的规格范围内需要配对合适弹力 的弹簧的问题， 不同规格窗帘之间的弹簧可任意互换、 增减， 可适应任意帘宽 和长度的窗帘， 无需调节弹簧力量和下梁承重， 提高了弹簧的互换性， 大幅提 高生产效率， 降低了生产成本； 可选用回弹力较大的弹簧， 解决了百叶帘使用 一段吋间后由于弹簧的失效造成的百叶帘收放失效的问题， 使用寿命大幅提升 ； (2) 将拉绳的两端隐蔽设置在上梁、 下梁内， 百叶帘外部无拉绳， 避免出现 安全事故。 对附图的简要说明
附图说明
[0027] 下面结合说明书附图对本发明作进一步详细说明：
[0028] 图 1是本发明无绳百叶帘的立体分解结构示意图；
[0029] 图 2是本发明的拉绳、 拉绳绕线棒、 棘轮和导向滑轮的装配示意图；
[0030] 图 3是图 2的左视图；
[0031] 图 4是本发明的拉绳、 拉绳绕线棒、 棘轮、 棘轮安装座和导向滑轮的装配示意 图；
[0032] 图 5是本发明的棘轮、 棘爪、 棘轮安装座的装配示意图；
[0033] 图 6是本发明拉绳绕线棒的立体机构示意图的；
[0034] 图 7是本发明的源动力输出总成的立体分解结构示意图。
[0035] 图中： 上梁 1， 下梁 2， 下封套 3， 叶片 4， 拉绳 5， 梯带 6， 源动力输出总成 7， 弹簧盒 71， 弹簧主动轴 72， 弹簧 73， 弹簧被动轴 74， 弹簧盒封盖 75， 通孔 76， 总输出轴 8， 安装座 9， 转向器安装座 10， 梯带转向器 11， 拉绳绕线棒 12， 卡槽 1 21， 绕线棒出线端 122， 绕线棒封套 13， 导向滑轮 14， 棘轮 15， 棘轮轴 151， 棘 爪 16， 棘轮安装座 17， 第一枢轴 18， 第二枢轴 19。
本发明的实施方式
[0036] 实施例 1
[0037] 如图 1所示， 无拉绳百叶帘包括上梁 1、 下梁 2、 多个长条形叶片 4、 拉绳 5、 用 于提供复位动力的源动力输出总成 7、 总输出轴 8、 用于缠绕和固定拉绳 5的拉绳 绕线棒 12， 如图 7所示， 源动力输出总成 7包括弹簧盒 71、 弹簧主动轴 72、 设于 弹簧主动轴 72内的弹簧 73、 与弹簧主动轴 72相配合的弹簧被动轴 74， 弹簧主动 轴 72、 弹簧被动轴 74在弹簧盒 71内配合可互相带动进行旋转， 该弹簧盒 71还设 有弹簧盒封盖 75， 该弹簧盒封盖 75上设有适于总输出轴 8通过的通孔 76， 以使总 输出轴 8穿过通孔 76与弹簧被动轴 74固定相连。
[0038] 无绳百叶帘还包括 3组 （其他实施例可根据百叶帘尺寸进行调整） 用于调整叶 片 4角度的梯带 6， 各叶片 4依次设置在梯带 6的四边形空间内， 叶片 4上设有相应 的贯穿槽， 各贯穿槽设于梯带 6之间， 拉绳 5依次穿过各叶片 4的贯穿槽， 使得拉 绳 5隐蔽设置在梯带 6之间； 总输出轴 8上套接有用于调整梯带方向的梯带转向器 11 (其他实施例可根据百叶帘尺寸进行调整） ， 梯带 6的底端与下梁 2固定相连 ， 梯带 6的顶端绕接在梯带转向器 11上， 梯带转向器 11安装在转向器安装座 10内 ， 用于调整各叶片 4的角度。
[0039] 如图 6所示， 拉绳绕线棒 12呈圆柱形设置， 拉绳绕线棒 12安装在安装座 9内， 拉 绳绕线棒 12端部设有适于拉绳 6通过的卡槽 121， 该拉绳绕线棒 12的出线端 122直 径由外及内逐渐减小， 拉绳绕线棒 12的数量为 2个 （其他实施例可根据百叶帘尺 寸进行调整） ， 拉绳 5为 2根 （其他实施例可根据百叶帘尺寸进行调整） ， 梯带 转向器 11、 拉绳绕线棒 12依次间隔套接在总输出轴 8上， 2个拉绳绕线棒 12呈镜 像设置 （其他实施例可以使绕线棒出线端按照相同顺序摆放） ， 以使拉绳绕线 棒 12的出线端 121设置在总输出轴 8的两端部位。
[0040] 如图 5所示， 拉无绳百叶帘还包括棘轮组件， 棘轮组件包括单动外配合棘轮机 构 15 (其他实施例可以是内配合棘轮机构） 、 用于限制棘轮 15逆向旋转的棘爪 1 6、 导向滑轮 14， 棘轮 15固定连接有棘轮轴 151， 棘轮 15的棘轮轴 151内设置第二 枢轴 19， 棘轮 15通过第二枢轴 19转动配合在棘轮安装座 17内， 棘轮安装座 17设 置在安装座 9内拉绳绕线棒 12的出线端 122的下侧， 用于防止棘轮 15逆向旋转的 棘爪 16设置在棘轮 15的相对内侧， 导向滑轮 14通过第一枢轴 18转动配合在棘轮 安装座 17内， 且导向滑轮 14设置在棘轮 15的相对外侧。
[0041] 如图 2、 图 3和图 4所示， 拉绳 5的顶端固定在拉绳绕线棒 12的卡槽 121内， 并在 拉绳绕线棒 12上缠绕预设的圈数后经出线端 122进入棘轮轴 151并在棘轮轴 151上 缠绕一周设置， 缠绕在棘轮轴 151上的拉绳 5的底端由棘轮轴 151的相对内侧穿出 然后穿过滑轮 14， 并依次穿过各叶片 4的贯穿槽， 拉绳 5的底端与下梁 2固定相连 ， 下梁 2的两端使用下封套 3进行封装。 上梁 1设有 U形凹槽， 源动力输出总成 7设 置在上梁 1的一端 （其他实施例可根据百叶帘尺寸采用多个源动力输出总成进行 驱动） ， 安装座 9、 棘轮安装座 17、 转向器安装座 10相应设置在 U形凹槽内， 防 止其与上梁 1之间直接接触造成磨损。
[0042] 本发明的无绳百叶帘， 通过单向旋转的棘轮、 棘爪、 棘轮轴与拉绳配合， 在百 叶帘下拉吋提供滚动摩擦、 在百叶帘静止吋提供静摩擦、 在百叶帘上提吋摩擦 消失， 实现百叶帘任意位置的下拉和上提， 由于静摩擦与滚动摩擦的差异较大 ， 因此弹簧的回弹力可以不受百叶帘重量、 装配条件的限制， 无需根据百叶帘 的尺寸、 零件表面质量情况对弹簧进行挑选配对， 解决了不同规格的窗帘在很 小的规格范围内需要配对合适弹力的弹簧的问题， 不同规格窗帘之间的弹簧可 任意互换、 增减， 可适应任意帘宽和长度的窗帘， 无需调节弹簧力量和下梁承 重， 提高了弹簧的互换性， 大幅提高生产效率， 降低了生产成本； 可选用回弹 力较大的弹簧， 解决了百叶帘使用一段吋间后由于弹簧的失效造成的百叶帘收 放失效的问题， 使用寿命大幅提升； 将拉绳的两端隐蔽设置在上梁、 下梁内， 百叶帘外部无拉绳， 避免出现安全事故。
[0043] 实施例 2
[0044] 上述拉无绳百叶帘的使用方法， 包括如下步骤：
[0045] A、 需要将百叶帘打幵吋， 用手向下拉无绳百叶帘的下梁 2， 拉绳 5绷紧且向下 运动， 由于摩擦力的存在， 拉绳 5带动导向滑轮 14、 棘轮 15、 拉绳绕线棒 12、 总 输出轴 8、 弹簧被动轴 74、 弹簧主动轴 72同步旋转， 各百叶片向下散幵， 此吋弹 簧主动轴 72内的弹簧 73发生形变， 拉绳与棘轮组件之间的摩擦为滚动摩擦。
[0046] B、 撤去下梁上的下拉力吋， 由于棘爪 16的存在， 棘轮 15无法反向旋转， 棘轮 组件棘轮轴 151为拉绳 5提供的摩擦由滚动摩擦转为静摩擦， 摩擦力大大增强， 弹簧 73的反弹力量小于拉绳 5和棘轮轴 151之间的摩擦力， 使得百叶帘的下梁 2和 各叶片 4保持静止。
[0047] C、 需要将百叶帘收起吋， 对下梁 2施加上托力以使下梁 2处于希望停止的位置 ， 在此瞬间拉绳 5松掉， 拉绳 5和棘轮轴 151之间的静摩擦消失， 弹簧 73复位， 带 动所述弹簧主动轴 72、 弹簧被动轴 74、 总输出轴 7、 拉绳绕线棒 12同步旋转， 使 得多余的拉绳 5再次缠绕在拉绳绕线棒 12上。
[0048] D、 百叶帘收起至预定位置后， 撤去下梁 2上的上托力， 拉绳 5处于绷紧状态， 拉绳 5和棘轮轴 151之间的静摩擦恢复， 弹簧 73的反弹力量小于拉绳 5和棘轮轴 15 1之间的摩擦力， 百叶帘的下梁 2和叶片 4再次保持静止。
[0049] 利用棘轮、 棘轮轴、 棘爪和拉绳使得百叶帘在需要阻力的吋候能够提供阻力， 不需要的吋候此力又能撤去， 或者变小， 弹簧的选取不再收百叶帘重量的限制 ， 百叶帘易于操控。
显然， 上述实施例仅仅是为清楚地说明本发明所作的举例， 而并非是对本发明 的实施方式的限定。 亦不限定在百叶窗帘系统的使用， 对蜂巢帘等都适用。 对 于所属领域的普通技术人员来说， 在上述说明的基础上还可以做出其它不同形 式的变化或变动。 这里无需也无法对所有的实施方式予以穷举。 而这些属于本 发明的精神所引伸出的显而易见的变化或变动仍处于本发明的保护范围之中。

Claims

权利要求书
[权利要求 1] 一种无绳百叶帘， 其特征在于， 包括上梁 （1 ) 、 下梁 （2) 、 多个长 条形叶片 （4) 、 拉绳 （5) 、 用于提供复位动力的源动力输出总成 （
7) 、 总输出轴 （8) ， 所述源动力输出总成 （7) 内设有弹簧 （73)
， 所述源动力输出总成 （7) 与所述总输出轴 （8) 固定相连， 用以提 拉叶片 （4) 的拉绳 （5) 穿过各叶片 （4) 设置， 所述拉绳 （5) 的底 端与下梁 （2) 固定相连；
无绳百叶帘还包括在百叶帘下拉吋对拉绳提供滚动摩擦、 静止吋对拉 绳提供静摩擦的棘轮组件， 所述棘轮组件包括棘轮 （15) 、 用于限制 棘轮 （15) 逆向旋转的棘爪 （16) ， 所述棘轮 （15) 固定连接有棘轮 轴 （151 ) ， 所述拉绳 （5) 穿过所述棘轮轴 （151 ) 并在所述棘轮轴 ( 151 ) 上缠绕至少一周设置， 该拉绳 （5) 的顶端在所述总输出轴 （
8) 上缠绕预设的圈数后固定在总输出轴 （8) 上。
[权利要求 2] 根据权利要求 1所述的无绳百叶帘， 其特征在于， 还包括用于调整叶 片角度的梯带 （6) ， 所述总输出轴 （8) 上套接有用于调整梯带 （6 ) 方向的梯带转向器 （11 ) ， 所述梯带 （6) 的底端与所述下梁 （2) 固定相连， 所述梯带 （6) 的顶端绕接在梯带转向器 （11 ) 上。
[权利要求 3] 根据权利要求 2所述的无绳百叶帘， 其特征在于， 所述源动力输出总 成 （7) 还包括弹簧盒 （71 ) 、 弹簧主动轴 （72) 、 与所述弹簧主动 轴 （72) 可互相带动进行旋转配合的弹簧被动轴 (74) ， 所述弹簧主 动轴 （72) 、 弹簧被动轴 (74) 设在所述弹簧盒 （71 ) 内， 该弹簧盒
(71 ) 还设有弹簧盒封盖 （75) ， 弹簧 （73) 设于弹簧主动轴 （72) 内， 该弹簧盒封盖 （75) 上设有适于所述总输出轴 （8) 通过的通孔 (76) ， 以使所述总输出轴 （8) 穿过所述通孔 （76) 与所述弹簧被 动轴 (74) 固定相连。
[权利要求 4] 根据权利要求 3所述的无绳百叶帘， 其特征在于， 还包括用于缠绕和 固定拉绳顶端 （5) 的拉绳绕线棒 （12) ， 所述拉绳绕线棒 （12) 套 接在所述总输出轴 （8) 上， 所述拉绳绕线棒 （12) 呈圆柱形设置， 该拉绳绕线棒的出线端 （122) 直径由外及内逐渐减小。
根据权利要求 4所述的无绳百叶帘， 其特征在于， 还包括与所述拉绳 绕线棒 （12) 形状相适配的绕线棒封套 （13) ， 所述拉绳绕线棒 （12 ) 设有适于所述拉绳 （5) 通过的卡槽 （121) ， 所述拉绳 （5) 的顶 端卡在卡槽 （121) 内， 所述绕线棒封套 （13) 插入所述拉绳绕线棒
(12) 的端部， 使得拉绳 (5) 夹紧在卡槽 (121) 内。
根据权利要求 5所述的无绳百叶帘， 其特征在于， 所述棘轮 （15) 为 单动外配合棘轮机构。
根据权利要求 6所述的无绳百叶帘， 其特征在于， 所述无绳百叶帘还 包括用于安装拉绳绕线棒 （12) 的安装座 （9) 和用于安装棘轮组件 的棘轮安装座 （17) 、 导向滑轮 （14) ， 所述棘轮 （15) 的棘轮轴 ( 151) 内设置第二枢轴 (19) ， 所述棘轮 (15) 通过第二枢轴 (19) 转动配合在所述棘轮安装座 （17) 内， 所述棘轮安装座 （17) 设置在 所述安装座 （9) 内拉绳绕线棒 （12) 的出线端 （122) 的下侧， 用于 防止所述棘轮 （15) 逆向旋转的棘爪 （16) 设置在所述棘轮 （15) 的 相对内侧， 所述导向滑轮 （14) 设置在所述棘轮的相对外侧。
根据权利要求 7所述的无绳百叶帘， 其特征在于， 缠绕在棘轮轴 （151 ) 上的拉绳 （5) 的底端由棘轮轴 （151) 的相对内侧穿出， 各叶片 （ 4) 上设有相应的贯穿槽， 拉绳 （5) 穿过所述贯穿槽设置在所述无绳 百叶帘端部的梯带 （6) 之间。 9.根据权利要求 8所述的无绳百叶帘 ， 其特征在于， 所述上梁 （1) 设有 U形凹槽， 所述源动力输出总成
(7) 设置在上梁 （2) 的一端， 所述拉绳绕线棒 （12) 、 总输出轴 （ 8) 、 设置在上梁 （2) 的 U形凹槽内。
一种如权利要求 7-9之一所述的无绳百叶帘的工作方法， 其特征在于 ， 包括如下步骤：
A、 需要将百叶帘打幵吋， 用手向下拉无绳百叶帘的下梁 （2) ， 拉绳 （4) 绷紧且向下运动， 由于摩擦力的存在， 拉绳 （5) 带动导向 滑轮 （14) 、 棘轮 （15) 、 拉绳绕线棒 （12) 、 总输出轴 （8) 、 弹 簧被动轴 （74) 、 弹簧主动轴 （72) 同步旋转， 各叶片 （4) 向下散 幵， 此吋弹簧主动轴 （72) 内的弹簧 （73) 发生形变， 拉绳 （5) 与 棘轮组件之间的摩擦为滚动摩擦；
B、 撤去下梁 （2) 上的下拉力吋， 由于棘爪 （16) 的存在， 棘轮 （1 5) 无法反向旋转， 棘轮组件棘轮轴 （151) 为拉绳 （5) 提供的摩擦 由滚动摩擦转为静摩擦， 使得百叶帘的下梁 （2) 和叶片 （4) 保持静 止；
C、 需要将百叶帘收起吋， 对下梁 （2) 施加上托力以使下梁 （2) 处 于希望停止的位置， 在此瞬间拉绳 （5) 松掉， 拉绳 （5) 和棘轮轴 （ 151) 之间的摩擦消失， 弹簧 （73) 复位， 带动所述弹簧主动轴 （72
) 、 弹簧被动轴 （74) 、 总输出轴 （8) 、 拉绳绕线棒 （12) 同步旋 转， 使得多余的拉绳 （5) 再次缠绕在拉绳绕线棒 （12) 上；
D、 百叶帘收起至预定位置吋， 撤去下梁上的上托力， 拉绳 （5) 处 于绷紧状态， 拉绳 （5) 和棘轮轴 （151) 之间的静摩擦恢复， 百叶帘 的下梁 （2) 和叶片 （4) 再次保持静止。
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CN101975017A (zh) * 2010-10-19 2011-02-16 浙江大学 智能门窗遮阳一体化装置
CN205532186U (zh) * 2016-04-13 2016-08-31 溧阳新元窗帘制品有限公司 一种无绳百叶帘

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