EP1435425A2 - Blind lifting control method and mechanism - Google Patents
Blind lifting control method and mechanism Download PDFInfo
- Publication number
- EP1435425A2 EP1435425A2 EP03005170A EP03005170A EP1435425A2 EP 1435425 A2 EP1435425 A2 EP 1435425A2 EP 03005170 A EP03005170 A EP 03005170A EP 03005170 A EP03005170 A EP 03005170A EP 1435425 A2 EP1435425 A2 EP 1435425A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- blind
- rod
- control rod
- headrail
- arm
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
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Classifications
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- 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
- E06B9/68—Operating devices or mechanisms, e.g. with electric drive
- E06B9/76—Operating devices or mechanisms, e.g. with electric drive using crank handles
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- 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
- E06B9/303—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable with ladder-tape
Definitions
- the present invention relates to blinds, and more specifically to a blind lifting control mechanism and a method of the same.
- a variety of blinds including Venetian blinds, roller blinds, pleated blinds, honeycomb shades, Roman blinds, vertical blinds, curtains, and so on are commercially available for use in a window to regulate the light, air, etc.
- a regular blind generally includes a headrail fastened to a top side of the window, and a blind body (formed of a shade or a set of slats, and a bottom rail) mounted at a bottom side of the headrail. The blind body is driven by an external driving force to change its window shading status.
- the blind lifting control mechanism of a conventional blind generally includes at least one bobbin, regularly two bobbins rotatably mounted with the headrail of the blind and adapted to roll up or let off lift cords of the blind and to further lift or lower the blind body (in an alternate prior art design, a roller is used instead of the bobbin, and the top side of the blind body is directly fastened to the periphery of the roller), a transmission mechanism mounted inside the headrail of the blind and coupled to the bobbins, and an endless operating cord member suspended from the headrail of the blind at an end for pulling by hand to drive the transmission mechanism to rotate the bobbins (or the roller).
- each of the two lift cords has a first end fastened to the bottom side of the blind body (for example, the bottom rail of the blind body), and a second end inserted inside the headrail of the blind and through a lift lock in the headrail and then downwardly extended out of the bottom side of the headrail to a distance.
- the user can pull the lift cords to lift or lower the blind body.
- the lift lock automatically locks the lift cords.
- the operating cord member or lift cords are suspended outside the headrail. Because a child can easily reach the suspended part of the lift cords or operating cord member, an accident may occur when a child pulls the lift cords or operates the cord member for fun.
- the blind lifting control mechanism includes a control rod vertically suspended at a lateral side of the window, two bobbins rotatably mounted with the headrail of the blind for synchronous rotation to roll up or let off lift cords of the blind and to further lift or lower the blind body of the blind, and a transmission mechanism coupled between the control rod and the bobbins.
- the bobbins are rotated clockwise or counterclockwise to roll up or let off the lift cords of the blind, and to further lift or lower the blind body of the blind.
- a blind lifting control mechanism 20 in accordance with a first preferred embodiment of the present invention is shown installed in a Venetian blind 10 for lifting control.
- the Venetian blind 10 includes a headrail 11, which is a hollow bar fixedly fastened to a topside of a window, a blind body 12, which is composed of a number of transversely extended parallel slats 13 and a bottom rail 14 suspended below the slats 13, two lift cords 15 bilaterally and vertically inserted through the slats 13, each lift cord 15 having a bottom end fixedly connected to the bottom rail 14 and a top end inserted into the inside of the headrail 11 (this will be described further), and a tilt control mechanism 16 adapted to regulate the tilting angle of the slats 13.
- the tilt control mechanism 16 includes a tilt rod 17 vertically suspended from the headrail 11 at a left side thereof and adapted to rotate a tilt rod via a worm gear and tilter mechanism, causing the tilt rod to move two ladder tapes and to further change the tilting angle of the slats 13. Because the tilt control mechanism 16 is a conventional design, no further detailed description is necessary.
- the blind lifting control mechanism 20 includes two bobbins 25 symmetrically mounted on an axle 27 inside the headrail 11 for synchronous rotation with the axle 27 to roll up or let off the lift cords 15 , a transmission mechanism 30 mounted inside the headrail 11 near a right side thereof, and a control rod 40 .
- the transmission mechanism 30 includes a worm 31, which includes a worm body 32 vertically suspended inside the headrail 11 and a round rod 33 axially extended from the bottom end of the worm body 32 and partially extended out of the bottom side of the headrail 11 , a worm gear 34 disposed inside the headrail 11 behind the worm 31 and meshed with the worm body 32 , a gear set 35 connected between the worm gear 34 and the axle 27 and adapted to transmit rotary driving force from the worm gear 34 to the axle 27, i.e., the worm gear 34 is the driving force input end of the gear set 35 and the axle 27 is the driving force output end of the gear set 35 .
- the gear set 35 may be variously embodied.
- the gear set 35 can be a gear train composed of a series of gears of different diameters meshed with one another, or formed of a number of gears coaxially meshed with one another.
- the control rod 40 is vertically suspended from the headrail 11 at a right side thereof, having a top end connected to the round rod 33 of the worm 31 by a universal joint 42. Thus, the control rod 40 can be oscillated toward inside of the room relative to the worm 31 (see FIG. 4).
- the control rod 40 has a bottom end mounted with a manual rotary driving device, for example, a crank handle 44 .
- the crank handle 44 includes a first arm 45 foldably pivoted to a bottom end of the control rod 40, a second arm 46 foldably pivoted to an end of the first arm 45 remote from the control rod 40 , a grip 47 coupled to the second arm 46 for free rotation relative to the second arm 46 , and a sleeve 48 fitted to the control rod 40 for free rotation and axial movement relative to the control rod 40.
- the sleeve 48 is longitudinally longer than the first arm 45 .
- the first arm 45 is set in a horizontal position perpendicular to the control rod 40
- the second arm 46 is set in a vertical position perpendicular to the first arm 45
- the sleeve 48 connected to a bottom end of the control rod 40 and being stopped against the first arm 45.
- the aforesaid worm and worm gear mechanism transmits driving force in one direction only (i.e., the worm 31 rotates the worm gear 34 when receiving a rotary driving force, however the worm 31 stops a rotary driving force coming from the worm gear 34 ), therefore the user can control the control rod 40 to rotate the bobbins 25, and a self-locking mechanism of the aforesaid worm and worm gear mechanism automatically locks the bobbins 25 when the user adjusted the blind 12 to the desired elevation, i.e., the blind 12 is positively positioned at the adjusted elevation.
- the invention does not use any lift cord or like means to achieve blind lifting control, it eliminates the possibility of a person (more particularly a child) hanged on the lift cord accidentally. Therefore, the blind is safe for use and fits blind safety codes in advanced countries.
- the aforesaid blind lifting control mechanism can also be used in another equivalent blind, for example, a pleated blind, honeycomb shade, or roman blind.
- a roller is used instead of the two bobbins and, the top side of the blind body is fastened to the periphery of the roller.
- a crank handle 44 is mounted at the bottom side of the control rod 40 of the lifting control mechanism 20 for enabling the user to rotate the control rod 40 with less effort.
- this crank handle 44 is not requisite.
- An accelerating mechanism may be installed in the transmission mechanism 30 so that the user can rotate the straight control rod 40 directly without much effort.
- FIG. 7 shows a blind lifting control mechanism according to a second preferred embodiment of the present invention.
- the blind lifting control mechanism 50 includes two bobbins 52 (similar to the bobbins of the aforesaid first embodiment), a transmission mechanism 54 (similar to the transmission mechanism of the aforesaid first embodiment), a control rod 56, and a detachable crank handle 60.
- the control rod 56 has a coupling device at a bottom end thereof, for example, a hexagonal coupling hole 57.
- the crank handle 60 includes a L-shaped crank arm 61, a driving rod 62 axially forwardly extended from an end of the L-shaped crank arm 61 and terminating in a coupling device, for example, a hexagonal coupling tip 64 that fits the hexagonal coupling hole 57 , a sleeve 63 sleeved onto the driving rod 62 for free rotation, and a grip 65 perpendicularly extended from the other end of the L-shaped crank arm 61 in direction reversed to the driving rod 62.
- a coupling device for example, a hexagonal coupling tip 64 that fits the hexagonal coupling hole 57 , a sleeve 63 sleeved onto the driving rod 62 for free rotation, and a grip 65 perpendicularly extended from the other end of the L-shaped crank arm 61 in direction reversed to the driving rod 62.
- the crank handle 60 is attached to the bottom end of the control rod 56 for enabling the user to rotate the control rod 56 with less effort.
- FIG. 8 shows a blind lifting control mechanism according to a third preferred embodiment of the present invention.
- an electric rotary driving device 73 is used for rotating the control rod 71 .
- the control rod 71 has a coupling portion, for example, a hexagonal coupling hole 72 at the bottom end thereof.
- the electric rotary driving device 73 includes a housing 74 , a battery power supply and motor assembly (not shown) mounted inside the housing 74 , a driving shaft 76 extended from the output shaft of the reversible motor of the battery power supply and motor assembly out of the housing 74 and terminating in a coupling device, for example, a hexagonal coupling tip 77 that fits the hexagonal coupling hole 72 of the control rod 71 , and a switch 75 adapted to control on/off and forward/backward rotation of the reversible motor of the battery power supply and motor assembly.
- a coupling device for example, a hexagonal coupling tip 77 that fits the hexagonal coupling hole 72 of the control rod 71
- a switch 75 adapted to control on/off and forward/backward rotation of the reversible motor of the battery power supply and motor assembly.
- FIGS. 9-11 show a blind lifting control mechanism according to a fourth preferred embodiment of the present invention.
- the blind lifting control mechanism 80 includes a transmission mechanism 81 , a bobbin 94, two pulleys 95, and a control rod 97 .
- the transmission mechanism 81 includes a movable device 82 , a spring member 89, and a gear set 91 .
- the movable device 82 includes a cylindrical gear 83 horizontally suspended inside a right side of the headrail 85 , a rod member 84 coaxially connected to the cylindrical gear 83 and extended out of a circular through hole 86 in the bottom side of the headrail 85 and pivoted to the top end of the control rod 97 , a toothed groove 88 formed in the headrail 85 around the circular through hole 86 at a top side, and a toothed collar 87 fixedly provided around the periphery of the rod member 84 and moved vertically with the rod member 84 between a locking position where the toothed collar 87 engages the toothed groove 88 to stop the rod member 84 from rotation (see FIGS.
- the spring member 89 is connected between an inner surface of the top wall of the headrail 85 and the top side of the cylindrical gear 83 to support the movable device 82 in the aforesaid locking position.
- the gear set 91 includes an input gear 92 horizontally meshed with the cylindrical gear 83 , and an output shaft 93 disposed in a vertical position for output of force.
- the bobbin 94 is fixedly mounted on the output shaft 93.
- the pulleys 95 are rotatably fastened with the headrail 85 at locations corresponding to the lift cords 96 , and adapted to guide the lift cords 96 to the bobbins 94 , for enabling the bobbins 94 to roll up or let off the lift cords 96 upon rotary motion of the output shaft 93.
- the gear set 91 When rotating the movable device 82, the gear set 91 is driven to rotate the bobbin 94, thereby causing the bobbin 94 to roll up or let off the lift cords 96.
- the control rod 97 When the blind lifted or lowered to the desired elevation, pull the control rod 97 downwards to move the toothed collar 87 from the unlocking position shown in FIG. 11 to the locking position shown in FIG. 9.
- the bobbin or bobbins for moving the lift cords of the blind can be designed to position inside the headrail either in a vertical position or a horizontal position.
- the transmission mechanism for transmitting a rotary driving force from the control rod to the bobbin or bobbins must have a self-locking feature to stop reverse transmission of force from the force output end (the bobbin or bobbins) to the force input end (the control rod).
- the transmission mechanism has the capability of increasing the speed of revolution.
Abstract
Description
- The present invention relates to blinds, and more specifically to a blind lifting control mechanism and a method of the same.
- A variety of blinds including Venetian blinds, roller blinds, pleated blinds, honeycomb shades, Roman blinds, vertical blinds, curtains, and so on are commercially available for use in a window to regulate the light, air, etc. A regular blind generally includes a headrail fastened to a top side of the window, and a blind body (formed of a shade or a set of slats, and a bottom rail) mounted at a bottom side of the headrail. The blind body is driven by an external driving force to change its window shading status.
- The blind lifting control mechanism of a conventional blind generally includes at least one bobbin, regularly two bobbins rotatably mounted with the headrail of the blind and adapted to roll up or let off lift cords of the blind and to further lift or lower the blind body (in an alternate prior art design, a roller is used instead of the bobbin, and the top side of the blind body is directly fastened to the periphery of the roller), a transmission mechanism mounted inside the headrail of the blind and coupled to the bobbins, and an endless operating cord member suspended from the headrail of the blind at an end for pulling by hand to drive the transmission mechanism to rotate the bobbins (or the roller). There is another conventional design in which each of the two lift cords has a first end fastened to the bottom side of the blind body (for example, the bottom rail of the blind body), and a second end inserted inside the headrail of the blind and through a lift lock in the headrail and then downwardly extended out of the bottom side of the headrail to a distance. The user can pull the lift cords to lift or lower the blind body. When the lift cords are released, the lift lock automatically locks the lift cords.
- In the aforesaid prior art designs, the operating cord member or lift cords are suspended outside the headrail. Because a child can easily reach the suspended part of the lift cords or operating cord member, an accident may occur when a child pulls the lift cords or operates the cord member for fun.
- It is primary objective of the present invention to provide a blind lifting control mechanism, which keeps cord members of the blind in a hidden status, eliminating the possibility of a person, especially a child, hanged on cord members of the blind accidentally.
- To achieve the foregoing objective of the present invention, the blind lifting control mechanism includes a control rod vertically suspended at a lateral side of the window, two bobbins rotatably mounted with the headrail of the blind for synchronous rotation to roll up or let off lift cords of the blind and to further lift or lower the blind body of the blind, and a transmission mechanism coupled between the control rod and the bobbins. When the user rotates the control rod by hand or through a rotary driving device, the bobbins are rotated clockwise or counterclockwise to roll up or let off the lift cords of the blind, and to further lift or lower the blind body of the blind.
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- FIG. 1 is an elevation view showing a blind lifting control mechanism installed in a Venetian blind according to a first preferred embodiment of the present invention.
- FIG. 2 is an enlarged view of a part of FIG. 1, showing the arrangement of a transmission mechanism in a headrail of the blind.
- FIG. 3 is a sectional view in an enlarged scale taken along a line 3-3 indicated in FIG. 2.
- FIG. 4 is a schematic sectional view showing a control rod moved relative to the headrail of the blind.
- FIG. 5 is a perspective view showing that the crank handle is at an operative position according to the first preferred embodiment of the present invention.
- FIG. 6 is a perspective view showing that the crank handle is at a non-operative position according to the first preferred embodiment of the present invention.
- FIG. 7 is an exploded view of a blind lifting control mechanism installed in a Venetian blind according to a second preferred embodiment of the present invention.
- FIG. 8 is an exploded view of a blind lifting control mechanism installed in a Venetian blind according to a third preferred embodiment of the present invention.
- FIG. 9 is a sectional view of a part of a fourth preferred embodiment of the present invention, showing a movable device is at a locking position.
- FIG. 10 is a sectional view taken along a line 10-10 indicated in FIG. 9.
- FIG. 11 is similar to FIG. 9 but showing the movable device moved to a unlocking position.
-
- Referring to FIGS. 1-3, a blind
lifting control mechanism 20 in accordance with a first preferred embodiment of the present invention is shown installed in a Venetian blind 10 for lifting control. The Venetian blind 10 includes aheadrail 11, which is a hollow bar fixedly fastened to a topside of a window, ablind body 12, which is composed of a number of transversely extendedparallel slats 13 and abottom rail 14 suspended below theslats 13, twolift cords 15 bilaterally and vertically inserted through theslats 13, eachlift cord 15 having a bottom end fixedly connected to thebottom rail 14 and a top end inserted into the inside of the headrail 11 (this will be described further), and atilt control mechanism 16 adapted to regulate the tilting angle of theslats 13. Thetilt control mechanism 16 includes atilt rod 17 vertically suspended from theheadrail 11 at a left side thereof and adapted to rotate a tilt rod via a worm gear and tilter mechanism, causing the tilt rod to move two ladder tapes and to further change the tilting angle of theslats 13. Because thetilt control mechanism 16 is a conventional design, no further detailed description is necessary. - The blind
lifting control mechanism 20 includes twobobbins 25 symmetrically mounted on anaxle 27 inside theheadrail 11 for synchronous rotation with theaxle 27 to roll up or let off thelift cords 15, atransmission mechanism 30 mounted inside theheadrail 11 near a right side thereof, and acontrol rod 40. - The
transmission mechanism 30 includes aworm 31, which includes aworm body 32 vertically suspended inside theheadrail 11 and around rod 33 axially extended from the bottom end of theworm body 32 and partially extended out of the bottom side of theheadrail 11, aworm gear 34 disposed inside theheadrail 11 behind theworm 31 and meshed with theworm body 32, agear set 35 connected between theworm gear 34 and theaxle 27 and adapted to transmit rotary driving force from theworm gear 34 to theaxle 27, i.e., theworm gear 34 is the driving force input end of thegear set 35 and theaxle 27 is the driving force output end of thegear set 35. Thegear set 35 may be variously embodied. For example, thegear set 35 can be a gear train composed of a series of gears of different diameters meshed with one another, or formed of a number of gears coaxially meshed with one another. - The
control rod 40 is vertically suspended from theheadrail 11 at a right side thereof, having a top end connected to theround rod 33 of theworm 31 by auniversal joint 42. Thus, thecontrol rod 40 can be oscillated toward inside of the room relative to the worm 31 (see FIG. 4). Thecontrol rod 40 has a bottom end mounted with a manual rotary driving device, for example, acrank handle 44. Thecrank handle 44 includes afirst arm 45 foldably pivoted to a bottom end of thecontrol rod 40, asecond arm 46 foldably pivoted to an end of thefirst arm 45 remote from thecontrol rod 40, agrip 47 coupled to thesecond arm 46 for free rotation relative to thesecond arm 46, and asleeve 48 fitted to thecontrol rod 40 for free rotation and axial movement relative to thecontrol rod 40. Thesleeve 48 is longitudinally longer than thefirst arm 45. When in use, as shown in FIGS. 1 and 2, thefirst arm 45 is set in a horizontal position perpendicular to thecontrol rod 40, thesecond arm 46 is set in a vertical position perpendicular to thefirst arm 45, and thesleeve 48 connected to a bottom end of thecontrol rod 40 and being stopped against thefirst arm 45. When not in use, as shown in FIGS. 5 and 6, thefirst arm 45 and thesecond arm 46 are pulled downwards and vertically aligned with thecontrol rod 40, and thesleeve 48 is pulled downwards and stopped above thegrip 47 around thefirst arm 45 and the pivoted connecting area between thecontrol rod 40 and thefirst arm 45 as well as the pivoted connecting area between thefirst arm 45 and thesecond arm 46. Therefore, thesleeve 48 locks thecontrol rod 40, thefirst arm 45, and thesecond arm 46 in alignment. - When wishing to adjust the elevation of the blind 12, move the
control rod 40 in direction from the window toward the inside of the room and set thecrank handle 44 in an operative position as shown in FIG. 4, and then hold thesleeve 48 with one hand and drive thegrip 47 with the other hand to rotate thecontrol rod 40 relative to thesleeve 48. Rotating thecontrol rod 40 causes theworm 31 to rotate theworm gear 34, the gear set 35 and theaxle 27, thereby causing thebobbins 25 to roll up or let off thelift cords 15 subject to the direction of rotation of thecontrol rod 40. Therefore, the blind 12 is received upwards or extended downwards. - According to the aforesaid embodiment, the aforesaid worm and worm gear mechanism transmits driving force in one direction only (i.e., the
worm 31 rotates theworm gear 34 when receiving a rotary driving force, however theworm 31 stops a rotary driving force coming from the worm gear 34), therefore the user can control thecontrol rod 40 to rotate thebobbins 25, and a self-locking mechanism of the aforesaid worm and worm gear mechanism automatically locks thebobbins 25 when the user adjusted the blind 12 to the desired elevation, i.e., the blind 12 is positively positioned at the adjusted elevation. - As indicated above, the invention does not use any lift cord or like means to achieve blind lifting control, it eliminates the possibility of a person (more particularly a child) hanged on the lift cord accidentally. Therefore, the blind is safe for use and fits blind safety codes in advanced countries.
- The aforesaid blind lifting control mechanism can also be used in another equivalent blind, for example, a pleated blind, honeycomb shade, or roman blind. When it's used in a roller blind, a roller is used instead of the two bobbins and, the top side of the blind body is fastened to the periphery of the roller.
- In the aforesaid embodiment, a
crank handle 44 is mounted at the bottom side of thecontrol rod 40 of thelifting control mechanism 20 for enabling the user to rotate thecontrol rod 40 with less effort. However, thiscrank handle 44 is not requisite. An accelerating mechanism may be installed in thetransmission mechanism 30 so that the user can rotate thestraight control rod 40 directly without much effort. - FIG. 7 shows a blind lifting control mechanism according to a second preferred embodiment of the present invention. According to this embodiment, the blind
lifting control mechanism 50 includes two bobbins 52 (similar to the bobbins of the aforesaid first embodiment), a transmission mechanism 54(similar to the transmission mechanism of the aforesaid first embodiment), acontrol rod 56, and adetachable crank handle 60. Thecontrol rod 56 has a coupling device at a bottom end thereof, for example, ahexagonal coupling hole 57. Thecrank handle 60 includes a L-shaped crank arm 61, adriving rod 62 axially forwardly extended from an end of the L-shaped crank arm 61 and terminating in a coupling device, for example, ahexagonal coupling tip 64 that fits thehexagonal coupling hole 57, asleeve 63 sleeved onto thedriving rod 62 for free rotation, and agrip 65 perpendicularly extended from the other end of the L-shaped crank arm 61 in direction reversed to thedriving rod 62. When in use, thecrank handle 60 is attached to the bottom end of thecontrol rod 56 for enabling the user to rotate thecontrol rod 56 with less effort. After use, thecrank handle 60 is removed from thecontrol rod 56. According to this embodiment, asingle crank handle 60 can be used to rotate the lifting control mechanisms of multiple blinds in a house. - FIG. 8 shows a blind lifting control mechanism according to a third preferred embodiment of the present invention. According to this embodiment, an electric
rotary driving device 73 is used for rotating thecontrol rod 71. Similar to the aforesaid second embodiment, thecontrol rod 71 has a coupling portion, for example, ahexagonal coupling hole 72 at the bottom end thereof. The electricrotary driving device 73 includes ahousing 74, a battery power supply and motor assembly (not shown) mounted inside thehousing 74, a drivingshaft 76 extended from the output shaft of the reversible motor of the battery power supply and motor assembly out of thehousing 74 and terminating in a coupling device, for example, ahexagonal coupling tip 77 that fits thehexagonal coupling hole 72 of thecontrol rod 71, and aswitch 75 adapted to control on/off and forward/backward rotation of the reversible motor of the battery power supply and motor assembly. By means of the electricrotary driving device 73, the user can conveniently rotate thecontrol rod 71 without effort. - FIGS. 9-11 show a blind lifting control mechanism according to a fourth preferred embodiment of the present invention. According to this embodiment, the blind
lifting control mechanism 80 includes atransmission mechanism 81, abobbin 94, twopulleys 95, and acontrol rod 97. Thetransmission mechanism 81 includes amovable device 82, aspring member 89, and a gear set 91. Themovable device 82 includes acylindrical gear 83 horizontally suspended inside a right side of theheadrail 85, arod member 84 coaxially connected to thecylindrical gear 83 and extended out of a circular throughhole 86 in the bottom side of theheadrail 85 and pivoted to the top end of thecontrol rod 97, atoothed groove 88 formed in theheadrail 85 around the circular throughhole 86 at a top side, and atoothed collar 87 fixedly provided around the periphery of therod member 84 and moved vertically with therod member 84 between a locking position where thetoothed collar 87 engages thetoothed groove 88 to stop therod member 84 from rotation (see FIGS. 9 and 10), and an unlocking position where thetoothed collar 87 is disengaged from thetoothed groove 88 for enabling therod member 84 to be rotated by the control rod 97 (see FIG. 11). Thespring member 89 is connected between an inner surface of the top wall of theheadrail 85 and the top side of thecylindrical gear 83 to support themovable device 82 in the aforesaid locking position. The gear set 91 includes aninput gear 92 horizontally meshed with thecylindrical gear 83, and anoutput shaft 93 disposed in a vertical position for output of force. Thebobbin 94 is fixedly mounted on theoutput shaft 93. Thepulleys 95 are rotatably fastened with theheadrail 85 at locations corresponding to thelift cords 96, and adapted to guide thelift cords 96 to thebobbins 94, for enabling thebobbins 94 to roll up or let off thelift cords 96 upon rotary motion of theoutput shaft 93. When wishing to adjust the elevation of the blind, push thecontrol rod 97 upwards to lift thetoothed collar 87 from the locking position shown in FIG. 9 to the unlocking position shown in FIG. 11, and then drive thecontrol rod 97 to rotate themovable device 82 forwards or backwards. When rotating themovable device 82, the gear set 91 is driven to rotate thebobbin 94, thereby causing thebobbin 94 to roll up or let off thelift cords 96. When the blind lifted or lowered to the desired elevation, pull thecontrol rod 97 downwards to move thetoothed collar 87 from the unlocking position shown in FIG. 11 to the locking position shown in FIG. 9. - According to the aforesaid embodiments, the bobbin or bobbins for moving the lift cords of the blind can be designed to position inside the headrail either in a vertical position or a horizontal position. Further, the transmission mechanism for transmitting a rotary driving force from the control rod to the bobbin or bobbins must have a self-locking feature to stop reverse transmission of force from the force output end (the bobbin or bobbins) to the force input end (the control rod). The transmission mechanism has the capability of increasing the speed of revolution.
Claims (13)
- A blind lifting control mechanism installed in a blind that includes a headrail mounted at a top side of a window and a blind body mounted under said headrail, said blind lifting control mechanism comprising:at least one bobbin rotatably fastened to said headrail of said blind for synchronous rotation to lift or lower the blind body of said blind;a transmission mechanism mounted inside said headrail of said blind and adapted to rotate said bobbin, said transmission mechanism having a rotating force input end disposed in an end of the headrail, a rotating force output end connected to said bobbin, and means for stopping reverse transmission of force from said force output end toward said force input end; anda control rod vertically suspended at a lateral side of the window and pivoted to the force input end of said transmission mechanism and adapted to rotate the force input end of said transmission mechanism by the user and to further drive said transmission mechanism to rotate said bobbin.
- The blind lifting control mechanism as defined in claim 1, wherein said transmission mechanism comprises a worm corresponding to said force input end and a worm gear corresponding to said force output end, said worm and said worm gear being engaged with each other.
- The blind lifting control mechanism as defined in claim 1, wherein said force input end of said transmission mechanism is a movable device, said movable device having a cylindrical gear horizontally suspended inside said headrail of said blind, a rod member coaxially connected to said cylindrical gear and downwardly extended out of said headrail of said blind and pivoted to a top end of said control rod, a toothed endless groove fixedly located on a part inside the headrail of said blind, a toothed collar fixedly provided around the periphery of said rod member and vertically movable with said rod member between a locking position where said toothed collar engages said toothed endless groove to stop said rod member from rotation, and an unlocking position where said toothed collar is disengaged from said toothed endless groove for enabling said rod member to be rotated by said control rod, a spring member connected between a part of the headrail and a part of said cylindrical gear to support said movable device in the locking position, and gear set meshed with said cylindrical gear and located between said force input end and said force output end.
- The blind lifting control mechanism as defined in claim 1, wherein said transmission mechanism further comprises a transmission gear set coupled between said force input end and said force output end and adapted to accelerate the speed of a rotary driving force received by said force input end and then to transmit the rotary driving force to said bobbin through said force output end.
- The blind lifting control mechanism as defined in claim 1, wherein said control rod has a top end connected to the force input end of said transmission mechanism through a universal joint.
- The blind lifting control mechanism as defined in claim 1, wherein said control rod has a bottom end provided with a collapsible crank handle, said collapsible crank handle having a first arm, said first arm having a first end pivoted to the bottom end of said control rod and a second end, a second arm having a first end pivoted to a second end of said first arm and a second end, a grip coupled to the second end of said second arm for free rotation relative to said second arm, and a sleeve sleeved onto said control rod for free rotation and axially movable along said control rod onto said first arm and the first end of said second arm to hold said control rod, said first arm and said second arm being aligned with each other.
- The blind lifting control mechanism as defined in claim 1, wherein said control rod has a coupling portion at a bottom end thereof; the blind lifting control mechanism further comprises a rotary driving device for detachably connected to the coupling portion of said control rod for operation by the user to rotate said control rod, said rotary driving device comprising a driving rod for output of a rotary driving force applied by the user, said driving rod having a front coupling portion for engaging the coupling portion of said control rod.
- The blind lifting control mechanism as defined in claim 7, said rotary driving device is manually operated.
- The blind lifting control mechanism as defined in claim 8, wherein said manually operated rotary driving device comprises a L-shaped crank arm, said L-shaped crank arm having a first end terminating in said driving rod and a second end, a sleeve sleeved onto said driving rod for free rotation relative to said driving rod and said L-shaped crank arm, and a grip perpendicularly extended from the second end of said L-shaped crank arm.
- The blind lifting control mechanism as defined in claim 7, wherein said rotary driving device is motor driven, said motor-driven rotary driving device having a reversible motor adapted to rotate said driving rod, a power supply adapted to provide the necessary working voltage to said reversible motor, and switch means adapted to control the rotation of said reversible motor.
- A blind lifting control method of controlling the rotation of bobbins in a headrail of a blind to roll up or let off lift cords of said blind to further lift or lower the blind body of said blind by rotating a control rod to further drive a transmission mechanism in said headrail of said blind to rotate said bobbins and enabling said transmission mechanism to prohibit transmission of a rotary driving force in direction from said bobbin toward said control rod after stoppage of the rotation of said control rod is stopped.
- The blind lifting control method as defined in claim 11 further comprising a crank handle connected at a bottom end of said control rod for rotating said control rod.
- The blind lifting control method as defined in claim 11 further comprising a rotary driving device detachably connected at bottom end of said control rod, said rotary driving device being adapted to be driven manually or electrically to rotate said control rod.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN02160268 | 2002-12-31 | ||
CNA021602689A CN1513406A (en) | 2002-12-31 | 2002-12-31 | Device for controlling lifting/lowering curtain |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1435425A2 true EP1435425A2 (en) | 2004-07-07 |
EP1435425A3 EP1435425A3 (en) | 2004-10-27 |
EP1435425B1 EP1435425B1 (en) | 2008-06-25 |
Family
ID=32477223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03005170A Expired - Lifetime EP1435425B1 (en) | 2002-12-31 | 2003-03-07 | Blind lifting control method and mechanism |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1435425B1 (en) |
CN (1) | CN1513406A (en) |
AT (1) | ATE399246T1 (en) |
DE (1) | DE60321765D1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1905328A1 (en) * | 2006-09-18 | 2008-04-02 | Werner Misner | Curtain rod lift |
DE202007010757U1 (en) * | 2007-08-02 | 2008-12-11 | Metabowerke Gmbh | Actuating device for an awning |
WO2012017136A1 (en) * | 2010-08-05 | 2012-02-09 | Zurfluh Feller | Device for driving a rotation of a roller blind shaft and installation comprising such a device |
CN102635304A (en) * | 2012-04-26 | 2012-08-15 | 上海实业交通电器有限公司 | Method for controlling automobile sunshade |
JP2014018947A (en) * | 2012-07-20 | 2014-02-03 | Kazuto Kobatake | Tool for isolation operation and the same with electric drill |
DE102015117706A1 (en) * | 2015-10-16 | 2017-04-20 | Alfred Schellenberg Gmbh | Drive device for driving a roller shutter |
Families Citing this family (11)
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CN101638973B (en) * | 2008-07-28 | 2011-04-20 | 陈耀华 | Manual clutch applied to electric curtain drive device |
CN103628807B (en) * | 2012-08-22 | 2016-03-30 | 林世明 | There is the curtain being elevated locking function |
US9284774B2 (en) | 2013-07-05 | 2016-03-15 | Teh Yor Co., Ltd. | Window shade and actuating system and operating method thereof |
CN105275365A (en) * | 2014-07-11 | 2016-01-27 | 叶照贤 | Electric-power-free automatic driving structure for sunshade curtains |
CN105888467A (en) * | 2014-11-05 | 2016-08-24 | 天津市瑞英达门窗有限公司 | Hollow glass window internally provided with roller blind |
CN105545192B (en) * | 2015-01-30 | 2017-04-19 | 福建固美金属有限公司 | Method for opening and closing intelligent bi-directional roller-shutter-type window |
CN110748286A (en) * | 2018-07-23 | 2020-02-04 | 邱泓峤 | Non-pull-rope controlled shutter |
CN108868562B (en) * | 2018-09-19 | 2024-04-02 | 宁波佳圆窗饰有限公司 | Curtain controlled by bottom transmission |
CN109138804B (en) * | 2018-10-10 | 2023-10-20 | 河南省城乡规划设计研究总院股份有限公司 | Blind with multiple adjustment postures |
US11686151B2 (en) | 2020-12-31 | 2023-06-27 | Springs Window Fashions, Llc | Motorized shade and wand assembly |
CN113250598B (en) * | 2021-05-18 | 2023-03-14 | 浙江摩根智能技术有限公司 | Curtain device control method |
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DE2359471A1 (en) * | 1973-11-29 | 1975-06-12 | Instructa Metall & Kunststoff | Venetian blind or roller shutter raising drive - with universal joint ball socket as stop for ball-connected spindle |
DE3132073A1 (en) * | 1980-08-21 | 1982-03-25 | Emil Schenker AG, 5012 Schönenwerd | Slatted blind which is driven by an electric motor and has an emergency drive |
FR2568932A1 (en) * | 1984-08-09 | 1986-02-14 | Lassie Patrick | Device for actuating roller shutters |
NL9000285A (en) * | 1990-02-06 | 1991-09-02 | Schoen Siegfried Joachim | Curtain or sunblind operating device - has electric motor, spindle and universal coupling |
US6308764B1 (en) * | 2000-10-05 | 2001-10-30 | Industrial Technology Research Institute | Modulating mechanism of venetian blind |
EP1180576A1 (en) * | 2000-08-17 | 2002-02-20 | Edco Engineering S.A. | Control device for actuating a blind |
-
2002
- 2002-12-31 CN CNA021602689A patent/CN1513406A/en active Pending
-
2003
- 2003-03-07 DE DE60321765T patent/DE60321765D1/en not_active Expired - Fee Related
- 2003-03-07 EP EP03005170A patent/EP1435425B1/en not_active Expired - Lifetime
- 2003-03-07 AT AT03005170T patent/ATE399246T1/en not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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DE2359471A1 (en) * | 1973-11-29 | 1975-06-12 | Instructa Metall & Kunststoff | Venetian blind or roller shutter raising drive - with universal joint ball socket as stop for ball-connected spindle |
DE3132073A1 (en) * | 1980-08-21 | 1982-03-25 | Emil Schenker AG, 5012 Schönenwerd | Slatted blind which is driven by an electric motor and has an emergency drive |
FR2568932A1 (en) * | 1984-08-09 | 1986-02-14 | Lassie Patrick | Device for actuating roller shutters |
NL9000285A (en) * | 1990-02-06 | 1991-09-02 | Schoen Siegfried Joachim | Curtain or sunblind operating device - has electric motor, spindle and universal coupling |
EP1180576A1 (en) * | 2000-08-17 | 2002-02-20 | Edco Engineering S.A. | Control device for actuating a blind |
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1905328A1 (en) * | 2006-09-18 | 2008-04-02 | Werner Misner | Curtain rod lift |
DE202007010757U1 (en) * | 2007-08-02 | 2008-12-11 | Metabowerke Gmbh | Actuating device for an awning |
WO2012017136A1 (en) * | 2010-08-05 | 2012-02-09 | Zurfluh Feller | Device for driving a rotation of a roller blind shaft and installation comprising such a device |
CN102635304A (en) * | 2012-04-26 | 2012-08-15 | 上海实业交通电器有限公司 | Method for controlling automobile sunshade |
JP2014018947A (en) * | 2012-07-20 | 2014-02-03 | Kazuto Kobatake | Tool for isolation operation and the same with electric drill |
DE102015117706A1 (en) * | 2015-10-16 | 2017-04-20 | Alfred Schellenberg Gmbh | Drive device for driving a roller shutter |
DE102015117706B4 (en) | 2015-10-16 | 2022-12-29 | Alfred Schellenberg Gmbh | Drive device for driving a roller shutter |
Also Published As
Publication number | Publication date |
---|---|
EP1435425A3 (en) | 2004-10-27 |
CN1513406A (en) | 2004-07-21 |
ATE399246T1 (en) | 2008-07-15 |
EP1435425B1 (en) | 2008-06-25 |
DE60321765D1 (en) | 2008-08-07 |
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