EP2497892A1 - Operating device for rotating a winding roller of a window blind - Google Patents
Operating device for rotating a winding roller of a window blind Download PDFInfo
- Publication number
- EP2497892A1 EP2497892A1 EP11157684A EP11157684A EP2497892A1 EP 2497892 A1 EP2497892 A1 EP 2497892A1 EP 11157684 A EP11157684 A EP 11157684A EP 11157684 A EP11157684 A EP 11157684A EP 2497892 A1 EP2497892 A1 EP 2497892A1
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- EP
- European Patent Office
- Prior art keywords
- actuating
- operating device
- disposed
- coupling member
- anchored
- 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.)
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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
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/40—Roller blinds
- E06B9/42—Parts or details of roller blinds, e.g. suspension devices, blind boxes
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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
- E06B9/78—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor for direct manual operation, e.g. by tassels, by handles
Definitions
- This invention relates to a window blind, more particularly to an operating device for rotating a winding shaft of a window blind to wind up or winding down a curtain cloth.
- a conventional window blind generally includes a winding roller, a curtain cloth extending downwardly from the roller, and a ring chain (or cord) disposed on an end portion of the roller and extending downwardly.
- a user can pull the ring chain to rotate the winding roller such that the curtain cloth can be wound upwardly or downwardly.
- the ring chain might wrap around a child' s neck if the child sticks his/her head in the loop formed by the ring chain, thereby causing strangling incident.
- Another window blind such as those disclosed in EP Application No. 10157918. 3 and U. S. Patent Application No. 12/696173 , is provided with an operating rod to replace the ring chain.
- the operating rod extends vertically and has an upper end coupled with a winding roller by a rotation transmitting mechanism such that vertical rotation of the operating rod results in horizontal rotation of the winding roller, and a lower end coupled with a hinged handle that is manipulated to rotate the operating rod. Since the hinged handle is disposed remote from the winding roller, a force applied to the handle is hard to be transmitted to the rotation transmitting mechanism, thereby rendering the operation laborious and inefficient.
- An object of the present invention is to provide an operating device for rotating a winding roller of a window blind which is operable easily and smoothly, and which is suitable for winding a relatively long curtain cloth.
- the operating device includes a rotating shaft which is adapted to be coupled with a winding roller of a window blind such that a counterclockwise or clockwise rotation of the rotating shaft about an upright axis results in horizontal rotation of the winding roller for a corresponding winding-up or winding-down of a curtain cloth.
- the rotating shaft has a shaft body having upper and lower thread segments.
- a sleeve shell is disposed to surround and permit the shaft body to be rotatable relative thereto so as to cooperatively define an accommodation space, and extends in a direction of the upright axis to terminate at upper and lower peripheral ends.
- Upper and lower coupling members are disposed in the accommodation space.
- Each of the upper and lower coupling members includes an anchored end anchored on the sleeve shell, and at least one finger portion which extends from the anchored end to terminate at a grip end, and which has a cammed surface that radially confronts the sleeve shell.
- the grip end has an engageable region which radially confronts a corresponding one of the upper and lower thread segments such that an upper friction engagement between the engageable region of the upper coupling member and the upper thread segment permits the counterclockwise rotation of the rotary shaft when a manual force is applied to move the sleeve shell upward, and such that a lower friction engagement between the engageable region of the lower coupling member and the lower thread segment permits the clockwise rotation of the rotary shaft when a manual force is applied to move the sleeve shell downward.
- An actuating member is disposed in the accommodation space, is movable relative to the upper and lower coupling members in the direction of upright axis, and has upper and lower inner tubular wall portions, each of which has a camming surface that is configured to mate with the cammed surface of a respective one of the upper and lower coupling members such that, when the actuating member is moved upward from a non-actuating position to an upper actuating position, the engageable region of the upper coupling member is pressed to make the upper friction engagement with the upper thread segment as a result of an upper cam action between the upper camming and cammed surfaces, and such that, when the actuating member is moved downward from the non-actuating position to a lower actuating position, the engageable region of the lower coupling member is pressed to make the lower friction engagement with the lower thread segment as a result of a lower cam action between the lower camming and cammed surfaces.
- the window blind 1 includes a horizontal extending headrail 11, two mounts 12 (only one is shown in Fig. 1 ) spacedly disposed on the headrail 11, two rotary sleeves 13 (only one is shown in Fig. 1 ) rotatably mounted between the mounts 12, the winding roller 14 operatively coupled with the rotary sleeves 13 to be rotatable relative to the headrail 11 about a horizontal axis for winding up or winding down a curtain cloth 15, and a coupling mechanism 16 operatively coupled with one of the rotary sleeves 13, and having a connecting end 161.
- the operating device of this invention is connected to the connecting end 161, and is shown to comprise a rotating shaft 2 and a driving mechanism 3 mounted on the rotating shaft 2.
- the rotating shaft 2 has an upper shaft end 22 which is adapted to be connected to the connecting end 161 of the coupling mechanism 16 such that a counterclockwise or clockwise rotation of the rotating shaft 2 about an upright axis transverse to a direction of the horizontal axis results in horizontal rotation of the winding roller 14 for a corresponding winding-up or winding-down of the curtain cloth, a shaft body 24 extending from the upper shaft end 22 along the upright axis to terminate at a lower shaft end.
- the shaft body 24 has upper and lower thread segments 241, 242 which are disposed on an outer shaft surface thereof and which are proximate to the upper shaft end 22 and the lower shaft end, respectively. In this embodiment, the shaft body 24 has external threads on its entire outer surface.
- the driving mechanism 3 includes a sleeve shell 31, upper and lower couplingmembers 34, 37, an actuatingmember 32, a control member 33, and first, second, third, and fourth biasing springs 35, 38, 36, 39.
- the sleeve shell 31 includes two shell halves matingly connected to each other to have a barrel wall 311 which surrounds and permits the shaft body 24 to be rotatable relative thereto so as to cooperatively define an accommodation space 310, and which has an inner shell wall surface that confronts the shaft body 24, and that extends in a direction of the upright axis to terminate at upper and lower peripheral ends 312, 319.
- Upper and lower abutment ledges 313, 314 are disposed on the inner shell wall surface.
- the shell wall 311 has an elongated slot 316 extending in the direction of upright axis to terminate at upper and lower retaining ends 317, 318 that oppositely extend circumferentially.
- the upper and lower coupling members 34, 37 disposed in the accommodation space 310 and proximate to the upper and lower peripheral ends 312, 319, respectively.
- Each of the upper and lower coupling members 34, 37 includes an anchored end 343, 373 which is in frictional engagement with and slidable relative to the inner shell wall surface of the sleeve shell 31, and a plurality of finger portions 342, 372 which extend from the anchored end 343, 373 away from a respective one of the upper and lower peripheral ends 312, 319 to terminate at grip ends 344, 374, which are angularly displaced from one another about the upright axis, and which cooperatively have a cammed surface 345, 375 that radially confronts the sleeve shell 31.
- Each of the grip ends 344, 375 has an engageable region 346, 376 which radially confronts a corresponding one of the upper and lower thread segments 241, 242.
- an upper friction engagement between the engageable regions 346 of the upper coupling member 34 and the upper thread segment 241 permits the counterclockwise rotation of the rotary shaft 2 when a manual force is applied to move the sleeve shell 31 upward.
- a lower friction engagement between the engageable regions 376 of the lower coupling member 37 and the lower thread segment 242 permits the clockwise rotation of the rotary shaft 2 when a manual force is applied to move the sleeve shell 31 downward.
- the actuating member 32 is disposed in the accommodation space 310 and has two sliding flange portions 322 which are slidable along the inner shell wall surface of the sleeve shell 31 to be movable relative to the upper and lower coupling members 34, 37 in the direction of upright axis.
- the actuating member 32 has upper and lower inner tubular wall portions 324, 325 respectively extending from the sliding flange portions 322 to terminate at upper and lower tubular ends.
- Each of the upper and lower inner tubular wall portions 324, 325 has a camming surface 326, 327 that is configured to mate with the cammed surfaces 345, 375 of a respective one of the upper and lower coupling members 34, 37.
- the camming surfaces 326, 327 are configured to be conical that is diverged to the respective one of the upper and lower tubular ends. Therefore, when the actuating member 32 is moved upward fromanon-actuatingposition ( Fig. 3 ) toanupperactuating position ( Fig. 5 ) , the engageable regions 346 of the upper coupling member 34 are pressed to make the upper friction engagement with the upper thread segment 241 as a result of an upper cam action between the upper camming and cammed surfaces 326, 345. When the actuating member 32 is moved downward from the non-actuating position to a lower actuating position ( Fig. 7 ), the engageable regions 376 of the lower coupling member 37 are pressed to make the lower friction engagement with the lower thread segment 242 as a result of a lower cam action between the lower camming and cammed surfaces 327, 375.
- the control member 33 has a nut 333, a bolt 331, and a knob 332.
- the nut 333 is disposed between the upper and lower inner tubular wall portions 324, 325, and extends radially from the actuating member 32 to be slidable in the elongated groove 316 so as to serve as a guided portion 333.
- the nut 333 is further configured to be angularly displaceable to an upper locked position, where the nut 333 is retained in the upper retaining end 317 to hold the actuating member 32 at the upper actuating position, and to a lower locked position, where the nut 333 is retained in the lower retaining end 318 to hold the actuating member 32 at the lower actuating position.
- the bolt 331 has a first end 335 which is threadedly engaged in the nut 333 to serve as an actuating end 335, and a second end 334 radially opposite to the first end 335.
- the knob 332 is connected to the second end 334 and is configured to cover the elongated slot 316 and to be disposed externally of the sleeve shell 31 to be manually operable.
- the first biasing spring 35 is disposed between the anchored end 343 of the upper coupling member 34 and the upper tubular end of the actuating member 32 while the second biasing spring 38 is disposed the anchored end 373 of the lower coupling member 37 and the lower tubular end of the actuating member 32 so as to brace the actuating member 32 in the direction of upright axis by virtue of downward and upward biasing forces exerted upon upper and lower tubular ends of the actuating member 32, respectively.
- the third biasing spring 36 is disposed between the upper peripheral end 312 and the anchored end 343 of the upper coupling member 34 to bias the anchored end 343 toward the upper tubular end while counteracting the biasing action of the first biasing spring 35.
- the fourth biasing spring 39 is disposed between the lower peripheral end 319 and the anchored end 373 of the lower coupling member 37 to bias the anchored end 373 toward the lower tubular end while counteracting the biasing action of the second biasing spring 38.
- the user pushes the driving mechanism 3 upwardly to permit counterclockwise rotation of the rotating shaft 2 to thereby rotate the winding roller 14 for winding up the curtain cloth 15.
- the lower coupling member 37 is disengaged from the actuating member 32, and may be movable upward by the biasing action of the fourth biasing spring 39.
- the lower abutment ledge 314 an excess upward movement of the lower coupling member 37 can be prevented.
- the user can push the control member 33 away from the upper locked position to permit the actuating member 32 back to the non-actuating position ( Fig. 3 ).
- the user pulls the driving mechanism 3 downward to a relatively low position, and pushes the control member 33 again to the upper locked position for upwardly moving the driving mechanism 3 to counterclockwise rotate the rotating shaft 2.
- the driving mechanism 3 is reciprocate upward and downward along the rotating shaft 2 to continuously rotate the rotating shaft 2 in the same direction.
- Such operating device is conveniently and easily operated, particularly for winding a quite long curtain cloth 15 without the need to elongate the length of the rotating shaft 2.
- actuating member 32 when it is desired to wind down the curtain cloth 15, the actuating member 32 is moved downward and angularly displaced to permit the nut 333 to be retained in the lower retaining end 318 to hold the actuating member 32 at the lower actuating position. Subsequently, the driving mechanism 3 is pushed downward to clockwise rotate the rotating shaft 2.
- the operating device according to this invention is operable smoothly and conveniently, particularly being used for winding a relatively long curtain cloth.
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- Civil Engineering (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Abstract
Description
- This invention relates to a window blind, more particularly to an operating device for rotating a winding shaft of a window blind to wind up or winding down a curtain cloth.
- A conventional window blind generally includes a winding roller, a curtain cloth extending downwardly from the roller, and a ring chain (or cord) disposed on an end portion of the roller and extending downwardly. A user can pull the ring chain to rotate the winding roller such that the curtain cloth can be wound upwardly or downwardly. However, it is of no rare occurrence that the ring chain might wrap around a child' s neck if the child sticks his/her head in the loop formed by the ring chain, thereby causing strangling incident. Another window blind such as those disclosed in
EP Application No. 10157918. 3 U. S. Patent Application No. 12/696173 , is provided with an operating rod to replace the ring chain. The operating rod extends vertically and has an upper end coupled with a winding roller by a rotation transmitting mechanism such that vertical rotation of the operating rod results in horizontal rotation of the winding roller, and a lower end coupled with a hinged handle that is manipulated to rotate the operating rod. Since the hinged handle is disposed remote from the winding roller, a force applied to the handle is hard to be transmitted to the rotation transmitting mechanism, thereby rendering the operation laborious and inefficient. - An object of the present invention is to provide an operating device for rotating a winding roller of a window blind which is operable easily and smoothly, and which is suitable for winding a relatively long curtain cloth.
- According to this invention, the operating device includes a rotating shaft which is adapted to be coupled with a winding roller of a window blind such that a counterclockwise or clockwise rotation of the rotating shaft about an upright axis results in horizontal rotation of the winding roller for a corresponding winding-up or winding-down of a curtain cloth. The rotating shaft has a shaft body having upper and lower thread segments. A sleeve shell is disposed to surround and permit the shaft body to be rotatable relative thereto so as to cooperatively define an accommodation space, and extends in a direction of the upright axis to terminate at upper and lower peripheral ends. Upper and lower coupling members are disposed in the accommodation space. Each of the upper and lower coupling members includes an anchored end anchored on the sleeve shell, and at least one finger portion which extends from the anchored end to terminate at a grip end, and which has a cammed surface that radially confronts the sleeve shell. The grip end has an engageable region which radially confronts a corresponding one of the upper and lower thread segments such that an upper friction engagement between the engageable region of the upper coupling member and the upper thread segment permits the counterclockwise rotation of the rotary shaft when a manual force is applied to move the sleeve shell upward, and such that a lower friction engagement between the engageable region of the lower coupling member and the lower thread segment permits the clockwise rotation of the rotary shaft when a manual force is applied to move the sleeve shell downward. An actuating member is disposed in the accommodation space, is movable relative to the upper and lower coupling members in the direction of upright axis, and has upper and lower inner tubular wall portions, each of which has a camming surface that is configured to mate with the cammed surface of a respective one of the upper and lower coupling members such that, when the actuating member is moved upward from a non-actuating position to an upper actuating position, the engageable region of the upper coupling member is pressed to make the upper friction engagement with the upper thread segment as a result of an upper cam action between the upper camming and cammed surfaces, and such that, when the actuating member is moved downward from the non-actuating position to a lower actuating position, the engageable region of the lower coupling member is pressed to make the lower friction engagement with the lower thread segment as a result of a lower cam action between the lower camming and cammed surfaces.
- Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiment of the invention, with reference to the accompanying drawings, in which:
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Fig. 1 is a fragmentaryperspective view of the preferred embodiment of an operating device incorporated in a window blind according to this invention; -
Fig. 2 is a fragmentary exploded perspective view of the preferred embodiment; -
Fig. 3 is a fragmentary sectional view of the preferred embodiment when an actuating member is in a non-actuating position; -
Fig. 4 is a sectional view taken along lines 4-4 ofFig. 3 ; -
Fig. 5 is a fragmentary sectional view of the preferred embodiment when the actuating member is in an upper actuating position; -
Fig. 6 is a sectional view taken along lines 6-6 ofFig. 5 ; and -
Fig. 7 is a fragmentary sectional view of the preferred embodiment when the actuating member is in a lower actuating position. - Referring to
Figs. 1 to 3 , the preferred embodiment of an operating device according to the present invention is shown to be mounted on a window blind 1 for rotating awinding roller 14 of the window blind 1. The window blind 1 includes a horizontal extendingheadrail 11, two mounts 12 (only one is shown inFig. 1 ) spacedly disposed on theheadrail 11, two rotary sleeves 13 (only one is shown inFig. 1 ) rotatably mounted between themounts 12, thewinding roller 14 operatively coupled with therotary sleeves 13 to be rotatable relative to theheadrail 11 about a horizontal axis for winding up or winding down acurtain cloth 15, and acoupling mechanism 16 operatively coupled with one of therotary sleeves 13, and having a connectingend 161. The operating device of this invention is connected to the connectingend 161, and is shown to comprise a rotatingshaft 2 and adriving mechanism 3 mounted on the rotatingshaft 2. - The rotating
shaft 2 has an upper shaft end 22 which is adapted to be connected to the connectingend 161 of thecoupling mechanism 16 such that a counterclockwise or clockwise rotation of the rotatingshaft 2 about an upright axis transverse to a direction of the horizontal axis results in horizontal rotation of thewinding roller 14 for a corresponding winding-up or winding-down of the curtain cloth, ashaft body 24 extending from the upper shaft end 22 along the upright axis to terminate at a lower shaft end. Theshaft body 24 has upper andlower thread segments shaft body 24 has external threads on its entire outer surface. - The
driving mechanism 3 includes asleeve shell 31, upper andlower couplingmembers actuatingmember 32, acontrol member 33, and first, second, third, andfourth biasing springs - The
sleeve shell 31 includes two shell halves matingly connected to each other to have abarrel wall 311 which surrounds and permits theshaft body 24 to be rotatable relative thereto so as to cooperatively define anaccommodation space 310, and which has an inner shell wall surface that confronts theshaft body 24, and that extends in a direction of the upright axis to terminate at upper and lowerperipheral ends shell wall 311 has anelongated slot 316 extending in the direction of upright axis to terminate at upper and lowerretaining ends - The upper and
lower coupling members accommodation space 310 and proximate to the upper and lowerperipheral ends lower coupling members end sleeve shell 31, and a plurality offinger portions end peripheral ends grip ends surface sleeve shell 31. Each of the grip ends 344, 375 has anengageable region lower thread segments engageable regions 346 of theupper coupling member 34 and theupper thread segment 241 permits the counterclockwise rotation of therotary shaft 2 when a manual force is applied to move thesleeve shell 31 upward. A lower friction engagement between theengageable regions 376 of thelower coupling member 37 and thelower thread segment 242 permits the clockwise rotation of therotary shaft 2 when a manual force is applied to move thesleeve shell 31 downward. - The actuating
member 32 is disposed in theaccommodation space 310 and has two slidingflange portions 322 which are slidable along the inner shell wall surface of thesleeve shell 31 to be movable relative to the upper andlower coupling members member 32 has upper and lower innertubular wall portions sliding flange portions 322 to terminate at upper and lower tubular ends. Each of the upper and lower innertubular wall portions camming surface cammed surfaces lower coupling members camming surfaces member 32 is moved upward fromanon-actuatingposition (Fig. 3 ) toanupperactuating position (Fig. 5 ) , theengageable regions 346 of theupper coupling member 34 are pressed to make the upper friction engagement with theupper thread segment 241 as a result of an upper cam action between the upper camming and cammedsurfaces member 32 is moved downward from the non-actuating position to a lower actuating position (Fig. 7 ), theengageable regions 376 of thelower coupling member 37 are pressed to make the lower friction engagement with thelower thread segment 242 as a result of a lower cam action between the lower camming and cammedsurfaces - The
control member 33 has anut 333, abolt 331, and aknob 332. Thenut 333 is disposed between the upper and lower innertubular wall portions member 32 to be slidable in theelongated groove 316 so as to serve as a guidedportion 333. Thenut 333 is further configured to be angularly displaceable to an upper locked position, where thenut 333 is retained in the upper retainingend 317 to hold the actuatingmember 32 at the upper actuating position, and to a lower locked position, where thenut 333 is retained in the lower retainingend 318 to hold the actuatingmember 32 at the lower actuating position. Thebolt 331 has afirst end 335 which is threadedly engaged in thenut 333 to serve as an actuatingend 335, and asecond end 334 radially opposite to thefirst end 335. Theknob 332 is connected to thesecond end 334 and is configured to cover theelongated slot 316 and to be disposed externally of thesleeve shell 31 to be manually operable. - The
first biasing spring 35 is disposed between the anchoredend 343 of theupper coupling member 34 and the upper tubular end of the actuatingmember 32 while thesecond biasing spring 38 is disposed the anchoredend 373 of thelower coupling member 37 and the lower tubular end of the actuatingmember 32 so as to brace the actuatingmember 32 in the direction of upright axis by virtue of downward and upward biasing forces exerted upon upper and lower tubular ends of the actuatingmember 32, respectively. - The
third biasing spring 36 is disposed between the upperperipheral end 312 and the anchoredend 343 of theupper coupling member 34 to bias the anchoredend 343 toward the upper tubular end while counteracting the biasing action of thefirst biasing spring 35. Thefourth biasing spring 39 is disposed between the lowerperipheral end 319 and the anchoredend 373 of thelower coupling member 37 to bias the anchoredend 373 toward the lower tubular end while counteracting the biasing action of thesecond biasing spring 38. - Referring to
Figs. 1 ,3 and4 , when the actuatingmember 32 is in the non-actuating position, the grip ends 344, 374 of the upper andlower coupling members member 32 by the biasing action of the first andsecond biasing springs engageable regions lower thread segments - Referring to
Figs. 1 ,2 ,5 and6 , when it is desired to counterclockwise rotate therotating shaft 2, the user grips thedriving mechanism 3 and pushes thecontrol member 33 upward and angularly to permit thenut 333 to be retained in the upper retainingend 317 so as to hold the actuatingmember 32 at the upper actuating position. At this stage, by an upper cam action between the upper camming and cammedsurfaces engageable regions 346 of theupper coupling member 34 are frictionally engaged with theupper thread segment 241, and thegrip ends 344 are vested with a biasing force that urges the correspondingengageable regions 344 to move away from theupper thread segment 241. Subsequently, the user pushes thedriving mechanism 3 upwardly to permit counterclockwise rotation of the rotatingshaft 2 to thereby rotate thewinding roller 14 for winding up thecurtain cloth 15. It is noted that when the actuatingmember 32 is in the upper actuating position as shown inFig. 5 , thelower coupling member 37 is disengaged from the actuatingmember 32, and may be movable upward by the biasing action of thefourth biasing spring 39. By virtue of the lower abutment ledge 314, an excess upward movement of thelower coupling member 37 can be prevented. - After the
driving mechanism 3 is moved to reach a predetermined height position, the user can push thecontrol member 33 away from the upper locked position to permit the actuatingmember 32 back to the non-actuating position (Fig. 3 ). The user pulls thedriving mechanism 3 downward to a relatively low position, and pushes thecontrol member 33 again to the upper locked position for upwardly moving thedriving mechanism 3 to counterclockwise rotate therotating shaft 2. - Specifically, during winding of the
curtain cloth 15, thedriving mechanism 3 is reciprocate upward and downward along the rotatingshaft 2 to continuously rotate the rotatingshaft 2 in the same direction. Such operating device is conveniently and easily operated, particularly for winding a quitelong curtain cloth 15 without the need to elongate the length of the rotatingshaft 2. - Referring to
Figs. 1 ,2 and7 , similarly, when it is desired to wind down thecurtain cloth 15, the actuatingmember 32 is moved downward and angularly displaced to permit thenut 333 to be retained in the lowerretaining end 318 to hold the actuatingmember 32 at the lower actuating position. Subsequently, thedriving mechanism 3 is pushed downward to clockwise rotate the rotatingshaft 2. - As illustrated, the operating device according to this invention is operable smoothly and conveniently, particularly being used for winding a relatively long curtain cloth.
Claims (9)
- An operating device for rotating a winding roller (14) of a window blind (1), the winding roller (14) being rotatable relative to a headrail (11) about a horizontal axis for winding up or winding down a curtain cloth (15) , characterized in that said operating device comprises:a rotating shaft (2) having an upper shaft end (22) which is adapted to be coupled with the winding roller (14) such that a counterclockwise or clockwise rotation of said rotating shaft (2) about an upright axis transverse to a direction of the horizontal axis results in horizontal rotation of the winding roller (14) for a corresponding winding-up or winding-down of the curtain cloth (15), a shaft body (24) extending from said upper shaft end (22) along the upright axis to terminate at a lower shaft end, said shaft body (24) having upper and lower thread segments (241, 242) which are disposed on an outer shaft surface thereof and which are proximate to said upper and lower shaft ends, respectively;a sleeve shell (31) which is disposed to surround and permit said shaft body (24) to be rotatable relative thereto so as to cooperatively define an accommodation space (310), and which extends in a direction of the upright axis to terminate at upper and lower peripheral ends (312, 319);upper and lower coupling members (34, 37) disposed in said accommodation space (310) and proximate to said upper and lower peripheral ends (312, 319), respectively, each of said upper and lower coupling members (34, 37) includingan anchored end (343, 373) which is anchored on said sleeve shell (31) and proximate to a respective one of said upper and lower peripheral ends (312, 319), andat least one finger portion (342, 372) which extends from said anchored end (343, 373) away from the respective one of said upper and lower peripheral ends (312, 319) to terminate at a grip end (344, 374), and which has a cammed surface (345, 375) that radially confronts said sleeve shell (31), said grip end (344, 374) having an engageable region (346, 376) which radially confronts a corresponding one of said upper and lower thread segments (241, 242) such that an upper friction engagement between said engageable region (346) of said upper coupling member (34) and said upper thread segment (241) permits the counterclockwise rotation of said rotary shaft (2) when a manual force is applied to move said sleeve shell (31) upward, and such that a lower friction engagement between said engageable region (376) of said lower coupling member (37) and said lower thread segment (242) permits the clockwise rotation of said rotary shaft (2) when a manual force is applied to move said sleeve shell (31) downward; andan actuating member (32) disposed in said accommodation space (310) and movable relative to said upper and lower coupling members (34, 37) in the direction of upright axis, and having upper and lower inner tubular wall portions (324, 325), each of which has a camming surface (326, 327) that is configured to mate with said cammed surface (345, 375) of a respective one of said upper and lower coupling members (34, 37) such that, when said actuating member (32) is moved upward from a non-actuating position to an upper actuating position, said engageable region (346) of said upper coupling member (34) is pressed to make the upper friction engagement with said upper thread segment (241) as a result of an upper cam action between said upper camming and cammed surfaces (326, 345) , and such that, when said actuating member (32) is moved downward from the non-actuating position to a lower actuating position, said engageable region (376) of said lower coupling member (37) is pressed to make the lower friction engagement with said lower thread segment (242) as a result of a lower cam action between said lower camming and cammed surfaces (327, 375).
- The operating device according to Claim 1, further characterized by:a control member (33) having an actuating end (335) which is configured to axiallymove said actuating member (32) among the non-actuating position, the upper actuating position and the lower actuating position, and an operating end (332) which is radially opposite to said actuating end (335), and which is disposed externally of said sleeve shell (31) to be manually operable.
- The operating device according to Claim 2, characterized in that said sleeve shell (31) has a shell wall (311) defining said accommodation space (310), and having an elongated slot (316) extending in the direction of upright axis to terminate at upper and lower retaining ends (317, 318) that extend circumferentially, said control member (33) having a guided portion (333) which is configured to extend through, and be slidable relative to said elongated slot (316) so as to permit said actuating end (335) to move axially, said guided portion (333) being further configured to be angularly displaceable to an upper locked position, where said guided portion (333) is retained in said upper retaining end (317) to hold said actuating member (32) at the upper actuating position, and to a lower locked position, where said guided portion (333) is retained in said lower retaining end (318) to hold said actuating member (32) at the lower actuating position.
- The operating device according to Claim 3, characterized in that said guided portion (333) is configured to be a nut (333) which is disposed between said upper and lower inner tubular wall portions (324, 325) , and which extends radially from said actuating member (32) and into said elongated groove (316), said control member (33) including a bolt (331) which has a first end (335) that is threadedly engaged in said nut (333), and a second end (334) radially opposite to said first end (335), and a knob (332) which is connected to said second end (334) and which is configured to cover said elongated slot (316).
- The operating device according to Claim 1, characterized in that each of said upper and lower coupling members (34, 37) includes a plurality of said finger portions (342, 372) which are angularly displaced from each other about the upright axis, and which are configured such that said grip ends (344, 347) of each of said upper coupling member (34) are vested with a biasing force that urges said corresponding engageable regions (346, 376) to move away from a corresponding one of said upper and lower thread segments (241, 242).
- The operating device according to Claim 5, further characterized by first and second biasing springs (35, 38) disposed to brace said actuating member (32) in the direction of upright axis by virtue of downward and upward biasing forces exerted upon upper and lower tubular ends of said actuating member (32), respectively.
- The operating device according to Claim 6, characterized in that said anchored end (343, 373) of each of said upper and lower coupling members (34, 37) is in frictional engagement with and slidable relative to said sleeve shell (31) , said operating device further comprising a third biasing spring (36) disposed to bias said anchored end (343) of said upper coupling member (34) toward said upper tubular end of said actuating member (32) while counteracting the biasing action of said first biasing spring (35), and a fourth biasing spring (39) disposed to bias said anchored end (373) of said lower coupling member (37) toward said lower tubular end of said actuating member (32) while counteracting the biasing action of said second biasing spring (38).
- The operating device according to Claim 7, characterized in that said first and second biasing springs (35, 38) are respectively disposed between said anchored end (343) of said upper coupling member (34) and said upper tubular end, and between said anchored end (373) of said lower coupling member (37) and said lower tubular end, said third and fourth biasing springs (36, 39) being respectively disposed between said upper peripheral end (312) and said anchored end (343) of said upper coupling member (34), and between said lower peripheral end (319) and said anchored end (373) of said lower coupling member (37).
- The operating device according to Claim 8, characterized in that said sleeve shell (31) has an inner shell wall surface which confronts said shaft body (24) , and which is interposed between said upper and lower peripheral ends (312, 319) , and upper and lower abutment ledges (313, 314) which are disposed on said inner shell wall surface and respectively between said anchored end (343) of said upper coupling member (34) and said upper tubular end, and between said anchored end (373) of said lower coupling member (37) and said lower tubular end, so as to restrict movement of said upper and lower coupling members (34, 37) in the direction of upright axis.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11157684A EP2497892A1 (en) | 2011-03-10 | 2011-03-10 | Operating device for rotating a winding roller of a window blind |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP11157684A EP2497892A1 (en) | 2011-03-10 | 2011-03-10 | Operating device for rotating a winding roller of a window blind |
Publications (1)
Publication Number | Publication Date |
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EP2497892A1 true EP2497892A1 (en) | 2012-09-12 |
Family
ID=44351576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11157684A Withdrawn EP2497892A1 (en) | 2011-03-10 | 2011-03-10 | Operating device for rotating a winding roller of a window blind |
Country Status (1)
Country | Link |
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EP (1) | EP2497892A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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AT374559B (en) * | 1980-03-11 | 1984-05-10 | Roletta Jalousie Ges M B H Nem | ROLL CURTAIN |
US4759398A (en) * | 1984-06-11 | 1988-07-26 | Renee William C | Operator for venetian blinds combination operator and venetian blind, and method of operating venetian blinds |
US5476132A (en) * | 1995-03-30 | 1995-12-19 | Jacobson; Jeff A. | Cordless apparatus for operating blinds and shades |
US5787953A (en) * | 1997-05-12 | 1998-08-04 | Jacobson; Jeff A. | Cordless apparatus for operating blinds and shades |
US6044890A (en) * | 1999-03-30 | 2000-04-04 | Renee; William C. | Wand adapter for venetian blinds |
US6089303A (en) * | 1996-12-18 | 2000-07-18 | Hunter Douglas International N.V. | Control wand for coverings for architectural openings |
US20100263808A1 (en) * | 2009-07-08 | 2010-10-21 | Kenney Manufacturing Co. | Cordless roll-up shade |
-
2011
- 2011-03-10 EP EP11157684A patent/EP2497892A1/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT374559B (en) * | 1980-03-11 | 1984-05-10 | Roletta Jalousie Ges M B H Nem | ROLL CURTAIN |
US4759398A (en) * | 1984-06-11 | 1988-07-26 | Renee William C | Operator for venetian blinds combination operator and venetian blind, and method of operating venetian blinds |
US5476132A (en) * | 1995-03-30 | 1995-12-19 | Jacobson; Jeff A. | Cordless apparatus for operating blinds and shades |
US6089303A (en) * | 1996-12-18 | 2000-07-18 | Hunter Douglas International N.V. | Control wand for coverings for architectural openings |
US5787953A (en) * | 1997-05-12 | 1998-08-04 | Jacobson; Jeff A. | Cordless apparatus for operating blinds and shades |
US6044890A (en) * | 1999-03-30 | 2000-04-04 | Renee; William C. | Wand adapter for venetian blinds |
US20100263808A1 (en) * | 2009-07-08 | 2010-10-21 | Kenney Manufacturing Co. | Cordless roll-up shade |
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