EP3255238A1 - Blind assembly and a winding device thereof - Google Patents
Blind assembly and a winding device thereof Download PDFInfo
- Publication number
- EP3255238A1 EP3255238A1 EP16174033.7A EP16174033A EP3255238A1 EP 3255238 A1 EP3255238 A1 EP 3255238A1 EP 16174033 A EP16174033 A EP 16174033A EP 3255238 A1 EP3255238 A1 EP 3255238A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- barrel
- fixing
- fixing unit
- winding device
- 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
- E06B9/24—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
- E06B9/24—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
- E06B9/50—Bearings specially adapted therefor
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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
- E06B9/60—Spring drums operated only by closure members
Definitions
- the disclosure relates to a blind assembly and a winding device thereof.
- a conventional blind usually has a cord operable to pull up or down a shade thereof.
- the cord may dangerously entangle with a child who plays with it, so cordless blinds have been provided in recent years.
- US Patent No.8251120B2 discloses a conventional cordless blind 1, which includes first and second seats 11, 12 spaced apart from each other, a winding device 13 mounted on an inner side of the first seat 11, a shaft 14 rotatably disposed between the second seat 12 and the winding device 13, and a shade 15 wound on the shaft 14.
- the first seat 11 has two spaced-apart posts 111, 112.
- the winding device 13 has a cover 131 disposed at the inner side of the first seat 11, a roller 133 rotatably disposed on the post 112, a linking member 134 interconnecting the roller 133 and the shaft 14, and an S-shaped spring 132 having an end that is connected fixedly to the post 111 and an opposite end that is connected fixedly to the roller 133, such that rotation of the roller 133 twists the S-shaped spring 132. Since a resilient force of the S-shaped spring 132 when being twisted is equal to the weight of an unwound portion of the shade 15, the shade 15 can be pulled up or down cordlessly to any desired extent.
- the conventional cordless blind 1 enables the shade 15 to maintain at the desired extent and improves safety of use.
- the conventional cordless blind 1 is adapted to be mounted between two window sides 101 of a window 10
- the winding device 13 is disposed outside of the shaft 14 (i.e., the shaft 14 is between the winding device 13 and the second seat 12)
- a side of the shade 15 which is adjacent to the winding device 13 cannot be close to a respective one of the window sides 101 which is connected to the first seat 11, thereby causing a relatively large light leakage gap therebetween that would affect the light-shading function of the conventional cordless blind 1.
- an object of the disclosure is to provide a blind assembly that can reduce the light leakage gap associated with the abovementioned prior art.
- the blind assembly includes first and second side seats spaced apart from each other, a winding shaft, a shade member, and a winding device.
- the winding shaft has an end mounted rotatably to the second side seat, and that is formed with an internal passage.
- the shade member is wound on the winding shaft.
- the winding device has a fixing unit, a coupling barrel, and a scroll spring.
- the fixing unit has a fixing portion that is non-rotatably disposed on the first side seat, and a spring-mounting portion that extends in a direction opposite to the fixing portion.
- the coupling barrel is disposed in the internal passage, is co-rotatable with the winding shaft, is rotatable relative to the fixing unit, and has a barrel wall that defines a receiving space receiving the spring-mounting portion.
- the scroll spring is disposed in the coupling barrel, and has a fixing end disposed on the spring-mounting portion, and a connecting end disposed on the barrel wall of the coupling barrel, such that rotation of the coupling barrel relative to the fixing unit generates a resilient force of the scroll spring for retracting the shade member.
- Another object of the disclosure is to provide a winding device that can be connected to a blind assembly.
- the winding device is adapted to be connected to a blind assembly for disposing a winding shaft on a first side seat.
- the winding shaft is formed with an internal passage.
- the winding device includes a fixing unit, a coupling barrel, and a scroll spring.
- the fixing unit has a fixing portion adapted to be non-rotatably disposed on the first side seat, and a spring-mounting portion extending in a direction opposite to the fixing portion.
- the coupling barrel is adapted to be disposed in the internal passage and co-rotatable with the winding shaft.
- the coupling barrel is rotatable relative to the fixing unit, and has a barrel wall that defines a receiving space receiving the spring-mounting portion.
- the scroll spring is disposed in the coupling barrel.
- the scroll spring has a fixing end disposed on the spring-mounting portion, and a connecting end disposed on the barrel wall, such that rotation of the coupling barrel relative to the fixing unit generates a resilient force of the scroll spring that is adapted for retracting a shade member.
- a blind assembly 2 is illustrated to include a first embodiment of a winding device 20 according to the present disclosure, and to be mounted between two opposite sides 251 of a window structure 25.
- the blind assembly 2 further includes first and second side seats 21, 22 spaced apart from each other, a rotatable winding shaft 23, and a shade member 24.
- the first side seat 21 has a non-circular positioning hole 211.
- the winding device 20 connects an end of the winding shaft 23 to the first side seat 21.
- the winding shaft 23 has an opposite end mounted rotatably to the second side seat 22, and that is formed with an internal passage 231.
- the shade member 24 is wound on the winding shaft 23, and has a counterweight portion 241 being adjacent to a bottom end thereof.
- the winding device 20 has a coupling barrel 3, a fixing unit 4, a scroll spring 5, an end cover 6, and a pin 7.
- the coupling barrel 3 is disposed in the internal passage 231, and is co-rotatable with the winding shaft 23.
- the coupling barrel 3 has a barrel wall 31 defining a receiving space 32.
- the barrel wall 31 has a hollowmain portion 311, an annular outer portion 312 extending outwardly from the main portion 311 and being proximate to the first side seat 21, two first pin holes 315 angularly spaced apart from each other and extending through the main portion 311 and the outer portion 312, two first spring grooves 316 formed in the main portion 311 and angularly spaced apart from each other, and four hook grooves 317 formed in the main portion 311 and being distal from the outer portion 312.
- the barrel wall 31 further has an annular inner portion 313 extending inwardly from the main portion 311, and that has a shoulder part 314 projecting inwardly into the receiving space 32.
- Each of the spring grooves 316 has an entrance 318 that is formed at an end of the main portion 311 which is opposite to the outer portion 312.
- the fixing unit 4 includes a fixing seat 41, and a spring-mounting seat 42 coupled fixedly to the fixing seat 41.
- the fixing seat 41 has a base plate portion 411 disposed outside of and abutting against the barrel wall 31 of the coupling barrel 3, a fixing portion 412 extending from the base plate portion 411 and fittingly and non-rotatably engaging the positioning hole 211 of the first side seat 21, a projecting portion 413 extending from the base plate portion 411 into the receiving space 32 of the coupling barrel 3, a collar portion 410 extending from the base plate portion 411 toward the receiving space 32 and surrounding the projecting portion 413, and four hook portions 414 extending from the collar portion 410, surrounding the projecting portion 413, and hooking the shoulder part 314 of the inner portion 313 of the barrel wall 31 of the coupling barrel 3, such that the barrel 31 is rotatable relative to the fixing unit 4.
- the base plate portion 411 has a second pin hole 415.
- the pin 7 is U-shaped.
- the spring-mounting seat 42 has an abutting portion 421 abutting against the projecting portion 413 of the fixing seat 41, an engaging portion 422 extending from the abutting portion 421 and engaging fixedly the engaging hole 416 of the fixing seat 41, and a spring-mounting portion 423 extending from the abutting portion 421 in a direction opposite to the fixing portion 412 of the fixing seat 41, and received in the receiving space 32 of the coupling barrel 3.
- the spring-mounting portion 423 has two second spring grooves 424, but the spring-mounting portion 423 may have only one second spring groove 424 in other embodiments.
- the scroll spring 5 is disposed in the coupling barrel 3, and has a fixing end 51 disposed on the spring-mounting portion 423 by engaging one of the second spring grooves 424 of the spring-mounting seat 42, and a connecting end 52 disposed on the barrel wall 31 of the coupling barrel 3 by engaging one of the first spring grooves 316.
- rotation of the coupling barrel 3 relative to the fixing unit 4 twists the scroll spring 5 to generate a resilient force for retracting the shade member 24.
- the counterweight portion 241 pulls the shade member 24 downwardly against the resilient force of the scroll spring 4, thereby maintaining the shade member 24 at any desired state. Since the application of the interaction between the resilient force of the scroll spring 5 and the weight of the shade member 24 is known in the art, further details on the same are omitted herein for the sake of brevity.
- the end cover 6 has a circular end wall 61, and four cover hooks 62 extending from the end cover 61 and respectively engaging the hook grooves 317 of the coupling barrel 3 such that the end cover 6 is co-rotatable with the barrel wall 31.
- the end wall 61 of the end cover 6 has a connecting hole 611 engaged rotatably with the spring-mounting portion 423 of the spring-mounting seat 42.
- the user pushes the spring-mounting seat 42 toward the fixing seat 41, and fixes the spring-mounting seat 42 to the fixing seat 41.
- the second pin hole 415 is registered with one of the first pin holes 315, and the user can insert the pin 7 into the one of the first pin holes 315 and the second pin hole 415 for locking the fixing unit 4 to the coupling barrel 3, thereby maintaining the resilient force.
- the fixing portion 412 of the fixing seat 41 extends out of the internal passage 231 of the winding shaft 23.
- the remainder of the winding device 20, which is a significant portion of the winding device 20, is received inside the internal passage 231, so that one lateral side of the shade member 24 which is proximate to the winding device 20 would be relatively close to a corresponding one of the window sides 251 of the window 25, that is, a light leakage gap that would be formed between the shade member 24 and the respective one of the window sides 251 can be reduced.
- a second embodiment of the blind assembly 2 has a structure similar to that of the first embodiment, except that the fixing seat 41 and the spring-mounting seat 42 are molded as one piece with the engaging hole 416 and the engaging portion 422 disclosed in the first embodiment being omitted.
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Abstract
Description
- The disclosure relates to a blind assembly and a winding device thereof.
- A conventional blind usually has a cord operable to pull up or down a shade thereof. The cord may dangerously entangle with a child who plays with it, so cordless blinds have been provided in recent years. Referring to
Figures 1 and2 ,US Patent No.8251120B2 discloses a conventional cordless blind 1, which includes first andsecond seats winding device 13 mounted on an inner side of thefirst seat 11, ashaft 14 rotatably disposed between thesecond seat 12 and thewinding device 13, and ashade 15 wound on theshaft 14. - The
first seat 11 has two spaced-apart posts winding device 13 has acover 131 disposed at the inner side of thefirst seat 11, aroller 133 rotatably disposed on thepost 112, a linkingmember 134 interconnecting theroller 133 and theshaft 14, and an S-shaped spring 132 having an end that is connected fixedly to thepost 111 and an opposite end that is connected fixedly to theroller 133, such that rotation of theroller 133 twists the S-shaped spring 132. Since a resilient force of the S-shaped spring 132 when being twisted is equal to the weight of an unwound portion of theshade 15, theshade 15 can be pulled up or down cordlessly to any desired extent. - The conventional cordless blind 1 enables the
shade 15 to maintain at the desired extent and improves safety of use. However, referring toFigure 3 , when the conventional cordless blind 1 is adapted to be mounted between twowindow sides 101 of awindow 10, since thewinding device 13 is disposed outside of the shaft 14 (i.e., theshaft 14 is between thewinding device 13 and the second seat 12), a side of theshade 15 which is adjacent to thewinding device 13 cannot be close to a respective one of thewindow sides 101 which is connected to thefirst seat 11, thereby causing a relatively large light leakage gap therebetween that would affect the light-shading function of the conventional cordless blind 1. - Therefore, an object of the disclosure is to provide a blind assembly that can reduce the light leakage gap associated with the abovementioned prior art.
- Accordingly, the blind assembly includes first and second side seats spaced apart from each other, a winding shaft, a shade member, and a winding device. The winding shaft has an end mounted rotatably to the second side seat, and that is formed with an internal passage. The shade member is wound on the winding shaft. The winding device has a fixing unit, a coupling barrel, and a scroll spring. The fixing unit has a fixing portion that is non-rotatably disposed on the first side seat, and a spring-mounting portion that extends in a direction opposite to the fixing portion. The coupling barrel is disposed in the internal passage, is co-rotatable with the winding shaft, is rotatable relative to the fixing unit, and has a barrel wall that defines a receiving space receiving the spring-mounting portion. The scroll spring is disposed in the coupling barrel, and has a fixing end disposed on the spring-mounting portion, and a connecting end disposed on the barrel wall of the coupling barrel, such that rotation of the coupling barrel relative to the fixing unit generates a resilient force of the scroll spring for retracting the shade member.
- Another object of the disclosure is to provide a winding device that can be connected to a blind assembly.
- Accordingly, the winding device is adapted to be connected to a blind assembly for disposing a winding shaft on a first side seat. The winding shaft is formed with an internal passage. The winding device includes a fixing unit, a coupling barrel, and a scroll spring. The fixing unit has a fixing portion adapted to be non-rotatably disposed on the first side seat, and a spring-mounting portion extending in a direction opposite to the fixing portion. The coupling barrel is adapted to be disposed in the internal passage and co-rotatable with the winding shaft. The coupling barrel is rotatable relative to the fixing unit, and has a barrel wall that defines a receiving space receiving the spring-mounting portion. The scroll spring is disposed in the coupling barrel. The scroll spring has a fixing end disposed on the spring-mounting portion, and a connecting end disposed on the barrel wall, such that rotation of the coupling barrel relative to the fixing unit generates a resilient force of the scroll spring that is adapted for retracting a shade member.
- Other features and advantages of the disclosure will become apparent in the following detailed description of the embodiment with reference to the accompanying drawings, of which:
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Figure 1 is a partly exploded perspective view of a conventional cordless blind disclosed inU.S. Patent No.8251120B2 ; -
Figure 2 is a schematic sectional view illustrating a winding device of the conventional cordless blind disclosed inU.S. Patent No.8251120B2 ; -
Figure 3 is a front view of the conventional cordless blind disclosed inU.S. Patent No.8251120B2 which is mounted between two window sides of a window; -
Figure 4 is a partly sectional view illustrating a first embodiment of a winding device according to the disclosure mounted to a blind assembly; -
Figure 5 is an exploded perspective view of the first embodiment; -
Figure 6 is an exploded sectional view of the first embodiment; -
Figure 7 is a sectional side view of the first embodiment; -
Figure 8 is a sectional front view of the first embodiment; and -
Figure 9 is a sectional front view of a second embodiment of the winding device according to the disclosure. - Referring to
Figures 4 ,5 and6 , ablind assembly 2 is illustrated to include a first embodiment of awinding device 20 according to the present disclosure, and to be mounted between twoopposite sides 251 of awindow structure 25. Theblind assembly 2 further includes first andsecond side seats rotatable winding shaft 23, and ashade member 24. Thefirst side seat 21 has anon-circular positioning hole 211. Thewinding device 20 connects an end of the windingshaft 23 to thefirst side seat 21. The windingshaft 23 has an opposite end mounted rotatably to thesecond side seat 22, and that is formed with aninternal passage 231. Theshade member 24 is wound on thewinding shaft 23, and has acounterweight portion 241 being adjacent to a bottom end thereof. - The
winding device 20 has acoupling barrel 3, afixing unit 4, ascroll spring 5, anend cover 6, and apin 7. - The
coupling barrel 3 is disposed in theinternal passage 231, and is co-rotatable with the windingshaft 23. In this embodiment, thecoupling barrel 3 has abarrel wall 31 defining areceiving space 32. Thebarrel wall 31 has ahollowmain portion 311, an annularouter portion 312 extending outwardly from themain portion 311 and being proximate to thefirst side seat 21, twofirst pin holes 315 angularly spaced apart from each other and extending through themain portion 311 and theouter portion 312, twofirst spring grooves 316 formed in themain portion 311 and angularly spaced apart from each other, and fourhook grooves 317 formed in themain portion 311 and being distal from theouter portion 312. Thebarrel wall 31 further has an annularinner portion 313 extending inwardly from themain portion 311, and that has ashoulder part 314 projecting inwardly into thereceiving space 32. Each of thespring grooves 316 has anentrance 318 that is formed at an end of themain portion 311 which is opposite to theouter portion 312. - In this embodiment, the
fixing unit 4 includes afixing seat 41, and a spring-mountingseat 42 coupled fixedly to thefixing seat 41. Thefixing seat 41 has abase plate portion 411 disposed outside of and abutting against thebarrel wall 31 of thecoupling barrel 3, afixing portion 412 extending from thebase plate portion 411 and fittingly and non-rotatably engaging thepositioning hole 211 of thefirst side seat 21, a projectingportion 413 extending from thebase plate portion 411 into thereceiving space 32 of thecoupling barrel 3, acollar portion 410 extending from thebase plate portion 411 toward thereceiving space 32 and surrounding the projectingportion 413, and fourhook portions 414 extending from thecollar portion 410, surrounding the projectingportion 413, and hooking theshoulder part 314 of theinner portion 313 of thebarrel wall 31 of thecoupling barrel 3, such that thebarrel 31 is rotatable relative to thefixing unit 4. Thebase plate portion 411 has asecond pin hole 415. Thepin 7 is U-shaped. The projectingportion 413 of thefixing seat 41 has anengaging hole 416. - The spring-
mounting seat 42 has anabutting portion 421 abutting against the projectingportion 413 of thefixing seat 41, anengaging portion 422 extending from theabutting portion 421 and engaging fixedly theengaging hole 416 of thefixing seat 41, and a spring-mountingportion 423 extending from theabutting portion 421 in a direction opposite to thefixing portion 412 of thefixing seat 41, and received in thereceiving space 32 of thecoupling barrel 3. In this embodiment, the spring-mountingportion 423 has twosecond spring grooves 424, but the spring-mountingportion 423 may have only onesecond spring groove 424 in other embodiments. - Referring to
Figures 5 ,6 and7 , thescroll spring 5 is disposed in thecoupling barrel 3, and has a fixingend 51 disposed on the spring-mountingportion 423 by engaging one of thesecond spring grooves 424 of the spring-mounting seat 42, and a connectingend 52 disposed on thebarrel wall 31 of thecoupling barrel 3 by engaging one of thefirst spring grooves 316. As such, rotation of thecoupling barrel 3 relative to thefixing unit 4 twists thescroll spring 5 to generate a resilient force for retracting theshade member 24. Thecounterweight portion 241 pulls theshade member 24 downwardly against the resilient force of thescroll spring 4, thereby maintaining theshade member 24 at any desired state. Since the application of the interaction between the resilient force of thescroll spring 5 and the weight of theshade member 24 is known in the art, further details on the same are omitted herein for the sake of brevity. - The
end cover 6 has acircular end wall 61, and fourcover hooks 62 extending from theend cover 61 and respectively engaging thehook grooves 317 of thecoupling barrel 3 such that theend cover 6 is co-rotatable with thebarrel wall 31. Theend wall 61 of theend cover 6 has a connectinghole 611 engaged rotatably with the spring-mountingportion 423 of the spring-mountingseat 42. - Referring to
Figures 5 ,7 and8 , when assembling thewinding device 20 of this embodiment, a user needs to couple thefixing seat 41 to thecoupling barrel 3, engage thefixing end 51 of thescroll spring 5 with one of thesecond spring grooves 424 of the spring-mounting seat 42, then install the spring-mounting seat 42 and the scrollspring 5 into thereceiving space 32 of thecoupling barrel 3, and finally engage the connectingend 52 of thescroll spring 5 with one of thefirst spring grooves 316 through theentrance 318 thereof. Before theengaging portion 422 of the spring-mountingseat 42 engages theengaging hole 416 of thefixing seat 41, the spring-mountingseat 42 is rotated relative to thebarrel wall 31 for generating the resilient force of thescroll spring 5. Afterward, the user pushes the spring-mountingseat 42 toward thefixing seat 41, and fixes the spring-mountingseat 42 to thefixing seat 41. At this time, thesecond pin hole 415 is registered with one of thefirst pin holes 315, and the user can insert thepin 7 into the one of thefirst pin holes 315 and thesecond pin hole 415 for locking thefixing unit 4 to thecoupling barrel 3, thereby maintaining the resilient force. - Referring to
Figures 4 ,7 and8 , after the windingdevice 20 is installed into theinternal passage 231 of the windingshaft 23 of theblind assembly 2, thepin 7 is removed from the one of the first pin holes 315 and and thesecond pin hole 415, so that thecoupling barrel 3 is rotatable relative to the fixingunit 4 and theblind assembly 2 is ready for use. - Specifically, when the winding
device 20 is mounted on theblind assembly 2, the fixingportion 412 of the fixingseat 41 extends out of theinternal passage 231 of the windingshaft 23. The remainder of the windingdevice 20, which is a significant portion of the windingdevice 20, is received inside theinternal passage 231, so that one lateral side of theshade member 24 which is proximate to the windingdevice 20 would be relatively close to a corresponding one of the window sides 251 of thewindow 25, that is, a light leakage gap that would be formed between theshade member 24 and the respective one of the window sides 251 can be reduced. - Referring to
Figure 9 , a second embodiment of theblind assembly 2 according to the present disclosure has a structure similar to that of the first embodiment, except that the fixingseat 41 and the spring-mountingseat 42 are molded as one piece with the engaginghole 416 and the engagingportion 422 disclosed in the first embodiment being omitted. - In the description above, for the purposes of explanation, numerous specific details have been set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one skilled in the art, that one or more other embodiments may be practiced without some of these specific details. It should also be appreciated that reference throughout this specification to "one embodiment," "an embodiment," an embodiment with an indication of an ordinal number and so forth means that a particular feature, structure, or characteristic may be included in the practice of the disclosure. It should be further appreciated that in the description, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of various inventive aspects.
- While the disclosure has been described in connection with what is considered the exemplary embodiment, it is understood that his disclosure is not limited to the disclosed embodiment but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements.
Claims (10)
- A blind assembly (2) comprising:a first side seat (21);a second side seat (22) that is spaced apart from said first side seat (21);a winding shaft (23) that has an end mounted rotatably to said second side seat (22), and that is formed with an internal passage (231);a shade member (24) that is wound on said winding shaft (23); andsaid blind assembly (2) being characterized bya winding device (20) that hasa fixing unit (4) havinga fixing portion (412) that is non-rotatably disposed on said first side seat (21), anda spring-mounting portion (423) that extends in a direction opposite to said fixing portion (412) ;a coupling barrel (3) disposed in said internal passage (231), co-rotatable with said winding shaft (23), rotatable relative to said fixing unit (4), and having a barrel wall (31) that defines a receiving space (32) receiving said spring-mounting portion (423); anda scroll spring (5) disposed in said coupling barrel (3) and havinga fixing end (51) that is disposed on said spring-mounting portion (423), anda connecting end (52) that is disposed on said barrel wall (31) of said coupling barrel (3), such that rotation of said coupling barrel (3) relative to said fixing unit (4) generates a resilient force of said scroll spring (5) for retracting said shade member (24).
- The blind assembly (2) as claimed in claim 1, characterized in that:said barrel wall (31) of said coupling barrel (3) of said winding device (20) has at least one first pin hole (315);said fixing unit (4) further has a second pin hole (415) being registered with said at least one first pin hole (315) when said coupling barrel (3) is rotated relative to said fixing unit (4) until the resilient force of said scroll spring (5) is generated; andsaid winding device (20) further has a pin (7) being insertable into one of said at least one first pin hole (315) and said second pin hole (415) upon registration of said at least one first pin hole (315) with said second pin hole (415) and generation of the resilient force, thereby maintaining the resilient force.
- The blind assembly (2) as claimed in claim 2, further characterized in that:said barrel wall (31) of said coupling barrel (3) further has at least one first spring groove (316) engaged with said connecting end (52) of said scroll spring (5); andsaid spring-mounting portion (423) of said fixing unit (4) has at least one second spring groove (424) engaged with said fixing end (51) of said scroll spring (5).
- The blind assembly (2) as claimed in claim 1, further characterized in that said winding device (20) further has an end cover (6) coupled co-rotatably to said barrel wall (31) of said coupling barrel (3), and having a connecting hole (611) that is engaged rotatably with said spring-mounting portion (423) of said fixing unit (4).
- A winding device (20) adapted to be connected to a blind assembly (2) for disposing a winding shaft (23) on a first side seat (21), the winding shaft (23) being formed with an internal passage (231), said winding device (20) being characterized by:a fixing unit (4) havinga fixing portion (412) that is adapted to be non-rotatably disposed on the first side seat (21), anda spring-mounting portion (423) that extends in a direction opposite to said fixing portion (412);a coupling barrel (3) being adapted to be disposed in the internal passage (231) and co-rotatable with the winding shaft (23), being rotatable relative to said fixing unit (4), and having a barrel wall (31) that defines a receiving space (32) receiving said spring-mounting portion (423); anda scroll spring (5) disposed in said coupling barrel (3), and havinga fixing end (52) that is disposed on said spring-mounting portion (423), anda connecting end (52) that is disposed on said barrel wall (31) of said coupling barrel (3), such that rotation of said coupling barrel (3) relative to said fixing unit (4) generates a resilient force of said scroll spring (5) adapted for retracting a shade member (24).
- The winding device (20) as claimed in claim 5, characterized in that:said barrel wall (31) of said coupling barrel (3) has at least one first pin hole (315);said fixing unit (4) further has a second pin hole (415) being registered with said at least one first pin hole (315) when said coupling barrel (3) is rotated relative to said fixing unit (4) until the resilient force of said scroll spring (5) is generated; andsaid winding device (20) further has a pin (7) being insertable into one of said at least one first pin hole (315) and said second pin hole (415) upon registration of said at least one first pin hole (315) with said second pin hole (415) and generation of the resilient force, thereby maintaining the resilient force.
- The winding device (20) as claimed in claim 5, further characterized in that said fixing unit (4) includes a fixing seat (41) having said fixing portion (412), and a spring-mounting seat (42) having said spring-mounting portion (423) and coupled fixedly to said fixing seat (41).
- The winding device (20) as claimed in claim 7, further characterized in that:said barrel wall (31) of said coupling barrel (3) has a shoulder part (314) projecting inwardly into said receiving space (32);said fixing seat (41) further has a projecting portion (413) extending into said receiving space (32), and a plurality of hook portions (414) surrounding said projecting portion (413) and hooking said shoulder part (314) of said barrel wall (31);said projecting portion (413) of said fixing seat (41) has an engaging hole (416); andsaid spring-mounting seat (42) further has an engaging portion (422) engaging fixedly said engaging hole (416).
- The winding device (20) as claimed in claim 5, further characterized in that:said barrel wall (31) of said coupling wall (31) further has a first spring groove (316) engaged with said connecting end (52) of said scroll spring (5); andsaid spring-mounting portion (423) of said fixing unit (4) has a second spring groove (424) engaged with said fixing end (51) of said scroll spring (5).
- The winding device (20) as claimed in claim 5, further characterized by an end cover (6) that is coupled co-rotatably to said barrel wall (31) of said coupling barrel (3), and that has a connecting hole (611) that is engaged rotatably with said spring-mounting portion (423) of said fixing unit (4).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16174033.7A EP3255238B1 (en) | 2016-06-10 | 2016-06-10 | Blind assembly and a winding device thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16174033.7A EP3255238B1 (en) | 2016-06-10 | 2016-06-10 | Blind assembly and a winding device thereof |
Publications (2)
Publication Number | Publication Date |
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EP3255238A1 true EP3255238A1 (en) | 2017-12-13 |
EP3255238B1 EP3255238B1 (en) | 2018-08-01 |
Family
ID=56119384
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16174033.7A Not-in-force EP3255238B1 (en) | 2016-06-10 | 2016-06-10 | Blind assembly and a winding device thereof |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US20110272106A1 (en) * | 2010-05-04 | 2011-11-10 | Willis Jay Mullet | Anti-reversible power spring apparatus and method |
US8251120B2 (en) * | 2010-09-09 | 2012-08-28 | Chicology, Inc. | Cordless blind structure |
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US20110272106A1 (en) * | 2010-05-04 | 2011-11-10 | Willis Jay Mullet | Anti-reversible power spring apparatus and method |
US8251120B2 (en) * | 2010-09-09 | 2012-08-28 | Chicology, Inc. | Cordless blind structure |
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