cordless blinds mechanism

15. Turning the knob would move pawl 30 into and away from the teeth to drum 24. That blind 80 has a headrail 82, bottomrail 84 and window covering material 86 connected between the headrail and bottomrail. Although all tubes and cords are supposed to be the same diameter, one tube or cord often is larger than the diameter of another tube or cord with differences in diameters often being 0.005 inches and may be as much as 0.010 inches. I prefer to provide a eyelet 125 on the end of the lever to receive an operator cord or wand. 4 is a perspective view similar to FIG. Automatically the blinds will open and close at those times without your physical intervention. The opening and closing of the blinds should be easy and smooth and should not encounter any resistance. FIG. As will be apparent from the discussion of other preferred embodiments, the lock mechanism could be connected to the cord collector or act directly on the cords. Replace the control cap. Blinds & Shades; Roller Window Shades; ... Cross Land Universal Mounting Brackets of Exterior Sun Shades,Outdoor/Indoor Roller up Blinds(Crank Operated/Cordless System) Beige. FIG. They are operated by a spring which is discreetly hidden inside the blind itself, these spring loaded roller blinds are operated by a tug on the bottom of the blind which gently raises or lowers the blind. Additionally, it also makes it easy to operate and safe from children and pets. Output drum 24 has gear teeth or an attached gear 27 that engages pawl 30. Operators would also have difficulty fully raising such a blind if a couch or other furniture were in front of the window. No. All of our cordless window treatments have a lift mechanism in either the headrail or bottom rail. If your remote is not with you, you can use this button to open and close your shades. Nos. An operator may choose to attach the free end of the cord to the bottomrail 4 with magnet 117. 11 and 12. No. Nos. 2, 11 and 13 showing a fourth present preferred lock mechanism in a cordless blind. Consequently, the spring motor will try to wind the lift cords 8 onto the spool 24. Our cordless blinds and child safe blinds are the perfect choice for children’s rooms and nurseries as they include a safety mechanism to open and close the roller blind. FIG. The brake must be released by pushing a button or lever in the bottomrail to raise the bottomrail. The blind could be a bottom stacking blind in which the top rail moves and the bottomrail is fixed. If you want the blinds to close and open at certain pre-determined times of the day, you can schedule them accordingly. The days of running around the house, pulling on cords to open your blinds and shades are gone. The upper blade is mounted within a hollow housing and the lower blade is secured to a plate member. This cord lock may contain a rotary-cam lock mechanism that acts directly on the lift cords 8. A fourth present preferred embodiment of my cordless blind is illustrated by the schematic of FIG. In a standard tube lift the lift cord is wound about a cylindrical tube or cylindrical axle. The most exposed are young people and pets. 25mm Aluminum Cordless Venetian Blind: Benefits: No more dirty or messy cords. The age-old corded blinds are being replaced by cordless ones that use battery-operated remotes or even smartphones instead. 2. In most venetian blinds a pair of lift cords is provided each having one end attached to the bottomrail and then passing through elongated holes in the slats up to and through the headrail. 1, 2 and 3. Whoever thinks that only appliances at home have a remote control is … Then, the spring motor and cords are free to move in only one direction. A cord lock is usually provided in the headrail through which the lift cords pass. This system is generally known as a tube lift system. As in the first configuration, the orientation of the spring as it is transferred from the storage drum to the output drum is reversed. Button Control Allen roth cordless faux wood 2 in honeyb curns cordless venetian 64 x 29 in cordless roman shade Cordless Blinds Mechanism - China Type Of Office Window Curn 50mm Cordless Clic Wood « Home This lock mechanism is also biased to a locked position. Many of the motorized cordless blinds come with the option where you can preset their operation. This spool and take up drum configuration is similar to the spool 42 and take up drum 24 shown in FIG. When button 108 is pressed the locking arm 102 pivots on post 104 to become disengaged from gear 27. All customers get FREE Shipping on orders over $25 shipped by Amazon. Pry all plugs from the bottom rail. On heavier blinds, the tilting mechanism is still present (usually a wand) but the lift which was traditionally corded, is now cordless. The third present preferred embodiment has a bottomrail illustrated in FIG. 020 8 364 1648 Monday to Thursday 9.30am - 5pm (Friday 3pm) 020 8 364 1648 Monday to Thursday 9.30am - 5pm (Friday 3pm) ... First Venetian blind that arrived fitted beautifully, but the tilt mechanism did not w... Andrew Sheldon. They use a rolling mechanism instead of a cord to lower and raise them up. Therefore, moving the lever from side to side alternately engages and disengages the lever from ratchet 122. 6 5 the spools are behind the take up drums and thus are not visible in the figure. Real design objects and furnishing accessories, roller blinds now … Even if the blind were in a standard window, short people would not be able to fully raise the blind without using a ladder. Save my name, email, and website in this browser for the next time I comment. Neat Fit Silver. When the bottomrail is beyond the reach of the user a cord or wand can be used to operate the lock mechanism. Remove the frayed cordloop by gently lifting the cord and turning the mechanism (Tip: a screwdriver inserted into the center of the mechanism allows for easy rotation). The end of the arm has a tooth which engages a gear attached to the spring motor or cord collector when the lock is in a locked position. The lock mechanism shown in FIGS. The spring motors 81 in the headrail are sized so as to be unable to lift the blind without the help of the spring motors 83 in the bottomrail 84. Gather the Tools; 2 … If you have cordless blinds with rails, to close down your blinds you have to give a gentle pull on the rail. Then the operator can place the bottomrail or moving rail of the blind at any desired location between a fully raised position and a fully lowered position. Wang et al. A cordless blind contains one or more spring motors, one or more cord collectors and a lock mechanism. All of these cordless blinds require the operator to hold the lock button or lever to move or raise the bottomrail. 6,029,734 disclose a cordless blind with a locating unit provided in the bottomrail which prevents the lift cords from moving until the operator presses a button on the bottomrail. Instead of pulling a cord to lift the blind through a pulley function, some cordless blinds will have a SafeLock button on the bottom rail. How Much Does It Cost To Blackout The Lights From Your Window? A user simply presses the button or lever, moves the bottomrail or moving rail to a desired position, and presses the button or lever again to lock the lock mechanism. 5,482,100; 5,531,257 and 6,079,471 and by Wang et al. 2. The axle 12 is coupled to a spring motor 20 shown in detail in FIG. This spring can be any of the springs described as suitable for use in the first embodiment and operates in the same manner. 9 containing two spring motors 40 similar to the motor shown in FIGS. Furthermore, Coslett's blind is not suitable for installation in an orientation in which one rail is fixed at the top of the window frame as is done for most building windows. 15 and 16 is similar to the lock mechanism of FIG. Another option is to provide a sprocket with missing teeth such that turning the sprocket will cause the sprocket to alternately engage and then disengage gear 27. You can twist the wand in either direction see how it works. A cord collector spool 44 is carried on the same axle 42 that carries take up drum 24. Your email address will not be published. A second present preferred embodiment of the lock mechanism has a pair of buttons that move a locking arm between a locked position and an unlocked position. In one configuration a rotary-cam mechanism is provided within hub 31 or control box 34. You enjoy the morning outside view or the evening sunset and protect the privacy of your homes at night by a gentle tug or touch of your fingers. Such a cording arrangement is similar to that of a lift cord in a pleated shade or venetian blind. If the system is not in balance when the operator positions the bottomrail at a desired location, the bottomrail moves upward or downward to a location at which the system is balanced. Rod 135, having button 137, and rod 136, with button 138, are attached to the locking arm 132. Great for Hard to Reach Windows Also, a laminated coil spring could be used. When the locking arm is in the locked position tooth 133, of the locking arm 132 engages the ratchet 139 as shown in FIG. 4.7 out … continuation-in-part of U.S. patent application Ser. Lift cords 88 are connected to the spring motors 81 in the headrail as well as the spring motors in the bottomrail 84. Pleated shades and roman shades are also raised and lowered by lift cords running from the bottom of the shade into a headrail. This spring can be any of the springs described as suitable for use in the other embodiments and operates in the same manner. Consequently, no operator cords or wands are needed to operate the blind. 3. So far the most innovative roller blind mechanism, now available. The invention relates to lift systems for raising and lowering window blinds that have lift cords such as pleated shades, roman shades and venetian blinds. Many motorized cordless blinds come with a button that is attached to the blinds. This makes it possible to operate them through lifting and lowering. Some tube lift systems are operated by a continuous loop cord that passes over end of the axle and extends from the headrail. 4 has a ratchet 122 provided on shaft 12. If the shade is a venetian blind I prefer to provide ladders in which the rails of the ladders are connected to form a continuous loop. Wands or Rail to Tilt Slats Rather than providing a button and rotary-cam to activate the lock, a knob could be used as the lock activator. Consequently, it is not possible to keep the bottomrail at the desired location without adjusting or replacing the spring motors. Another cordless blind relies upon a constant force spring motor attached to a spool or spools on which the lift cords are collected. Yet another spring motor configuration is shown in FIG. Rotate the cordloop into place. They contacted me very quickly when there was an issue with the order. Pulleys 74 and 75 in the headrail 2 and the bottomrail 4 are positioned at either end of the loop and support the ladder. No Safety Hazards In the lift system shown in FIG. DISCOVER; Roller Blinds: Tech & Design. Striped Cordless Roller Blinds Timeless in their style, our Striped spring loaded Cordless Roller Blinds are effective and practical. To disengage the lock mechanism from gear 27 an operator moves the lever and locking arm to the position shown in dotted line in FIG. A cord is connected to the output spool and passed from the handle through the housing and the blades and is connected to the plate member. 09/815,403, filed Mar. When the locking arm is disengaged, the spring motor and lift cords are free to move in either direction. Those ladders 70 have opposite rails 71, 72 having rungs between them that carry slats 73. This design contemplates a soft spun lace shades made from fabric material. The lock mechanism can also be used in those blinds having a gear attached a cord spool or a gear connecting several spring motors as illustrated in FIG. 13 is a perspective view similar to FIGS. Roller blinds are always more often considered as part of interior design. The lock mechanism has a locked position wherein the lift cords are restrained from being collected on the cord collector, or from being removed from the cord collector, or both. A third possible configuration is for the spring to vary in both width and thickness. A second present preferred locking mechanism 100 is shown in FIGS. Slat size: 25mm; Mechanism: Innovative one touch system. This type of cordless blind is disclosed by Coslett in U.S. Pat. This application is a FIG. The tubes are rotated to wind or unwind the lift cord around tubes. The lock mechanism could be located in the moving rail or the bottomrail. The spring motor 60 has two take-up drums 62 each carrying a spring 69 that is also connected to an associated storage drum 64. Examples of rotary-cam mechanisms used in ball-point pens are disclosed in U.S. Pat. In lock mechanism 100 there is a locking arm 102 having a tooth 103 which is sized to fit between gear teeth in gear 27. 2 the total length of lift cord that will be released is determined by the equation: L=π⁢⁢d1-d22 Compatible with Alexa,Google Home and Apple Siri Using Shortcuts. Privacy Policy Rods 105 and 106 are positioned so that when button 107 is pushed the locking arm will be in engagement with gear 27 preventing the spring motor and the cord collectors 10 on shaft 12 from turning in either direction. With a certain mechanism installed into your cordless blinds, you can easily adjust the amount of light that you want inside your home or get through a particular nook by lifting the bottom portion of your window treatment. Remove the bottom two slats. With no tangled mess hanging outside your windows, they convert your home into a trim and tidy sanctuary in contrast to the chaotic world outside. Cordless Rollers . 6 is a front view of two interconnected spring motors that can be used in the cordless blind of the present invention. If your cordless blinds have a rail system, gently pull down on the rail to close your blinds. Although only two lift cords 8 are shown in FIG. Spring motors 81 and 83 are provided in both the headrail and the bottomrail. In each of these embodiments one could substitute a sprocket for the locking arm. 1-16 of 311 results for "Roller Blind Mechanism" Skip to main search results Eligible for Free Shipping. However, the invention is not limited thereto. Powered by a remote control. The embodiments illustrated in the drawing are top stacking blinds having a fixed headrail and movable bottomrail. Neat Fit White. Cordless Blinds have a lift mechanism that makes it easier for you to either lift them or roll them down. Although I have shown certain present preferred embodiments of my cordless blind it should be distinctly understood that the invention is not limited thereto, but may be variously embodied within the scope of the following claims. 1-12 of over 6,000 results for Blinds & Shades. 8 has a single spring motor with a take up drum 24 and storage drum 22. The result is that every blind can be fabricated so that the bottom of the blind is level when the blind is fully lowered. Free Shipping by Amazon. The lift cords are wound on spools connected to a respective storage drum. Moving the lever in an opposite direction engages the sprocket. FIG. The tension causes the lift cords to be collected on the cord collector when the cord collector and the lift cords are free to move, thereby moving the bottomrail toward the headrail. All window blinds that have lift cords will have at least two lift cords and each lift cord is wound on a separate tube. The embodiments that utilize a lever could also have a retractable operator cord. Suitable for all rooms. Another spring motor configuration is illustrated in FIG. In the event that the cordless blind is a venetian type blind I prefer to configure the ladders as shown in FIG. 8 and 9. FIG. 1 is a rear perspective view of a present preferred embodiment of my cordless blind. The window covering material could also be a single panel of pleated material, roman shade material or a set of slats carried on ladders, as in a venetian blind. CUSTOM DRAPERY VALANCES AND CORNICE BOARDS, What is the Difference Between Cordless and Corded Blinds, Why Cordless Blinds Are More Effective Than Corded Blinds. When the cord lock is in a locked position, the lift cords cannot be wound onto the spool. The lock mechanism can be in either a locked position in which the bottomrail will not move in at least one direction, or in an unlocked position, which allows the bottomrail to move upward or downward freely. In this version, an operator cord is provided on a spool within the bottomrail. Choice of Colour: White or Ivory; Materials: Colour coated aluminum alloy. FIG. When you nudge the bottom rail up, it tilts the slats down to close the view. I further provide a lock mechanism attached to the cord collector or the lift cords. Thus, the two storage drums will turn simultaneously but in opposite directions. When … © 2004-2021 FreePatentsOnline.com. The lift cords are routed through a cord lock 46. Consequently, Coslett teaches the user to fix the plate member along one side of the window and to provide a hook to retain the hollow housing at the opposite side of the window when the shade is covering the window. Our collection of Cordless Spring Control Roller Blinds. 13 has a locking arm 112 similar to locking arm 102 in the embodiment of FIG. All rights reserved. Levolor 2″ Premium Wood Blinds A constant force spring plate is wound around a spring spool member and further engaged to an output spool, both of which are within a hollow handle secured to the hollow housing. The spring motor 40 of FIG. A lock mechanism (not shown) is connected to at least one of the storage drums or spool. If you are controlling the blinds with smart devices you will need to download the app on your phone or tablet. 6. 5. The springs in these motors vary in thickness or in width along their length as they are wound around storage drums. 11. In this condition the lift cords can move in only one direction allowing the shade to be raised or allowing the shade to be lowered. Cordless blinds make your life easy and hassle-free. 1 through 3 the lock mechanism is connected directly to the spring motor. 5,105,867 and by Kuhar in U.S. Pat. Palmer in Published United States Patent Application 2002/0088562 discloses a one way brake which prohibits the bottomrail from moving toward the headrail, but permits the bottomrail to be moved away from the headrail by an operator. 1 wherein a portion of the front wall of the bottomrail has been cut away. in U.S. Pat. The lever 123 is pivotally attached to post 124. 5,263,786; 5,915,866 and 5,997,204 whose teachings are incorporated herein by reference. One advantage of this lock mechanism is that it can be operated while the bottom rail is beyond the reach of the operator. No. However, instead of a pawl I provide a lever 123 supported on post 124. Consequently, the operator can place the bottomrail or moving rail at any desired location between a fully raised position and a fully lowered position. The spring motor and lock mechanism for the second embodiment shown in FIG. I prefer to provide an eyelet 115 at the end of the lever to which a cord 116 or wand (not shown) could be attached. A lock mechanism (not shown) is connected to the gear 66 or to at least one of the storage drums or spool. Nos. 11. A cord or wand could be attached to the button or lever in any of these embodiments to permit operation of the lock mechanism when the bottomrail is beyond the reach of the operator. 5 is a front view of three interconnected spring motors that can be used in the cordless blind of the present invention. These blinds rely on electric motors or spring motors to raise and lower the lift cord. Note: You may have to repeat this process a few times to reset the mechanism. If desired the cones could be omitted and the cords could be wrapped on the axle. Department. In this embodiment the lift cords 8 are collected on a spool 44 carried on a common axle 42 with the take up drum 24. A cord spool is coupled to one or more spring drums. The control shaft carries a pawl 30 having teeth that will mesh with gear teeth 27 on drum 24. 6. 13. 160/304.1, 160/302, 160/178.2R, 242/384.7, 160/170, 160/303, 254/391, 114/199, 185/37, 160/173R, 160/171, BUCHANAN INGERSOLL & ROONEY PC (ALEXANDRIA, VA, US), Click for automatic bibliography 15 is a perspective view similar to FIGS. A clip or magnet can be provided to nest the cord or wand against the bottomrail when the blind is in a fully-lowered or partially-lowered position. If such a blind is installed in a tall window many people would be unable to reach a fully raised blind without climbing on a ladder or chair. 7 is an end view of a ladder and associated pulleys that can be used when the cordless blind of the present invention is configured as a venetian blind. FIG. However, not all blinds come with a button. 1, 2 and 3. A fourth preferred embodiment of the lock mechanism utilizes a ratchet type lock similar to that used in roller shades. The lock mechanism 120 shown in FIG. Which direction you need to twist the wand will depend upon the brand and also the installation process. The spring provides a constant tension on the lift cords acting through the axles 23 and 12 and gears 26 and 28. So, cordless blinds for windows have many advantages: safety, reliability, durability, easiness in control, original and … These blinds rely on electric motors or spring motors to raise and lower the lift cord. 11. 3 is an enlarged view of the spring motor in the embodiment shown in FIGS. 3 of an alternative spring motor that can be used in the cordless blind of the present invention. Get rid of those ugly cords dangling by the side of the windows to increase the aesthetic appeal and elegance of your rooms. You will need to press the button till the blinds reach the position you want them to. If the blinds are installed at the bottom of the window then the rail system will be located at the top of the slats. The blind could also be a top-down, bottom-up blind having a headrail, a bottomrail and a moving rail. Then the slats can be tilted with a conventional tilt mechanism in the headrail. The present invention relates to window blinds and, more particularly to a cord winding mechanism for a cordless window blind. The spring is wound from one drum to the other in an opposite coil orientation. 2 it should be understood that the cordless blind could have more lift cords with the number of lift cords being related to the width of the blind. This spring motor 50 has three take-up drums 52 each carrying a spring that is also connected to an associated storage drum 54. In this case, you will use a device to operate the blinds. Roller blinds are another type of cordless blinds. The fabricator can adjust the position of the cord simply by rotating the cone relative to the axle. 1. This ratchet operates in the same manner as the ratchet system in a roller shade. A present preferred embodiment of my cordless blind or shade shown in FIG. Best seller in Curtain Blinds & Shades. Neat Fit Cream. 4. A good rule of thumb is to only use cordless when you can reach the top of the window without a ladder. Transform your homes into weather-controlled heavens with the gorgeous cordless blinds. That is so because when the blind is fully retracted most people could not reach the handle to extend or close the blind without standing on a stool or ladder. Moving the lever in one direction fully disengages the lever from the sprocket. The lock mechanism also has an unlocked position that allows the cord collector and plurality of lift cords to move freely. If you still cannot figure out nor do not want to reduce the cordless blinds yourself, then it is okay. Cordless blinds are the best not only in terms of functionality but also in terms of appearance. Then, the spring motor 20 and shaft 12 on which cords 8 are collected are free to move in either direction. The lock mechanism is positioned in the bottomrail or moving rail and is designed so that the operator is not required to hold a button to keep the lock in an unlocked position. A fifth embodiment of the lock mechanism has a locking arm activated by buttons or a lever that engages a ratchet that is attached to the spring motor or cord collector. 2, 11, 13 and 14 showing a fifth present preferred lock mechanism in a cordless blind. Neat & modern appearance with hidden installation brackets. As in the first embodiment there is a lock mechanism (not shown) that is connected to the take up drum or spool 44 through a gear mechanism or other suitable means. When the bottomrail is a second related distance from the headrail, the operator cord is retracted into the bottomrail. It should be apparent to those skilled in the art that one could substitute a sprocket or a gear for locking arm 102. The spring motor is connected to at least one cord collector in a manner to maintain tension on the cord collector. FIG. Preferably the spring is a constant force spring motor of the type disclosed by Coslett and Kuhar. This could be done by moving the sprocket into and away from engagement of gear 27. Cordless Blinds have a lift mechanism that makes it easier for you to either lift them or roll them down. Pressing a button once changes the lock mechanism from a locked position to an unlocked position. Step 1, Gently pull down the rail down to close the blinds. When worm gear 26 turns, worm gear 28 on shaft 12 will also turn turning the shaft 12. Operation: Just hold the bottom rail to push up or pull down, then adjust the angle … 1 is comprised of a headrail 2, a bottomrail 4 and a window covering material such as cellular material 6 connected between the headrail and the bottomrail. Pressing the button or lever would move the sprocket from the unlocked position to the locked position. Consequently, each rotation of the axle will collect or release a length of cord equal to the circumference of the tube which can be calculated from the equation L=πdn where d is the outside diameter of the tube plus the diameter of the cord and n is the number of revolutions. Others can be controlled through smartphones and tabs and even a smart home hub. 2 and 3 the spring motor 20 has a bracket 21 on which a storage drum 22 and an output drum 24 are rotatably mounted in a spaced apart relationship. In this embodiment a ratchet 139 is attached to the face of gear 27. Is It Worth It To Retrofit Your Blinds With Motorization Instead Of Buying New Ones. 7. The wand could be secured by a magnet or a clip in the same manner as cord 116. Thus, Coslett's shade can be in only one of two positions, fully extended to cover the window or fully retracted. All rights reserved. Undo the knot in the lift cord and pull up the lift cord enough to release the slats you need to remove. Both the springs and the lock mechanism are located in the bottomrail. Depending on the exact cordless product you choose, either twist the wand or tilt the bottom rail to open the slats. either in the headrail or the bottom rail, twisting the wand or tilting the bottom rail, depending on the type of cordless blind. Referring to FIGS. One could substitute a wand (not shown) for cord 116. When the locking arm is disengaged, the bottomrail is free to move in either direction. Several other configurations of spring motors can be used. 9 is a perspective view of a bottomrail partially cut away to show for a third present preferred embodiment of my cordless blind. FIG. Pull the cordless blinds all the way out, extending the blinds fully. Preloaded spring cordless is the new Coralis solution that combines the advantages of the cordless spring roller blind with the shortest possible assembling time. A control shaft 32 extends from hub 31 to a control box 34. With lighter weight mini blinds, cordless also includes wandless option where both functions (tilting and lifting) are performed together. The lever extends from the bottomrail. A spring 29 is coupled between the storage drum 22 and the output drum 24.

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