US20110061823A1 - Counterbalanced blind - Google Patents
Counterbalanced blind Download PDFInfo
- Publication number
- US20110061823A1 US20110061823A1 US12/561,357 US56135709A US2011061823A1 US 20110061823 A1 US20110061823 A1 US 20110061823A1 US 56135709 A US56135709 A US 56135709A US 2011061823 A1 US2011061823 A1 US 2011061823A1
- Authority
- US
- United States
- Prior art keywords
- roller
- top frame
- reel
- blind
- counterbalanced
- 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.)
- Abandoned
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- 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
- E06B9/262—Lamellar or like blinds, e.g. venetian blinds with flexibly-interconnected horizontal or vertical strips; Concertina blinds, i.e. upwardly folding flexible screens
-
- 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
- E06B9/262—Lamellar or like blinds, e.g. venetian blinds with flexibly-interconnected horizontal or vertical strips; Concertina blinds, i.e. upwardly folding flexible screens
- E06B2009/2625—Pleated screens, e.g. concertina- or accordion-like
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
- E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
- E06B9/32—Operating, guiding, or securing devices therefor
- E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives
- E06B2009/3222—Cordless, i.e. user interface without cords
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
- E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
- E06B9/32—Operating, guiding, or securing devices therefor
- E06B9/322—Details of operating devices, e.g. pulleys, brakes, spring drums, drives
- E06B2009/3225—Arrangements to aid the winding of cords rollers
Definitions
- FIG. 2 is a sectional front view of the counterbalanced blind in FIG. 1 ;
Abstract
A counterbalanced blind has a top frame, a bottom bar, a shade mounted between the top frame and the bottom bar, a reel device, two roller devices and two cords. The reel device is mounted in the top frame, and the two roller devices are mounted on the opposite side of the reel device in the top frame. The cords are wound and fastened in the reel device, respectively extend in opposite directions to the roller devices, pass downward through the shade and are fastened on the bottom bar. The bottom bar can be raised or lowered and position of the bottom bar will be retained after releasing the bottom bar.
Description
- 1. Field of the Invention
- The present invention relates to a blind, and more particularly to a counterbalanced blind that can be operated easily without a pull string.
- 2. Description of Related Art
- For shielding off sunshine or external light, windows are usually provided with blinds or shades. A conventional blind generally has a top frame, a bottom bar, a shade and a control device. The top frame is mounted securely on a wall or a ceiling. Two sides of the shade are respectively fastened to the top frame and the bottom bar. The control device is mounted in the top frame and has a pull string that is hung beside the top frame. When the pull string is parallel to the blind, the control device is locked and the shade is held at a predetermined height. When the pull string is obliquely, the control device is released and the bottom bar is free to move and the shade may be concertinaed or spread out to control amount of light entering a room.
- However, when the top frame is hung relatively high compared to a person controlling the blinds, for example when wheelchair users or children are operating the blind or when the blind is hung high due to a large window, high ceiling or use on stairwells, positioning the pull string sufficiently obliquely to release the bottom bar and the shade may be difficult. Furthermore, the pull string may be dangerous to young children and pets, especially threat by strangulation or entanglement.
- Therefore, the present invention provides a counterbalanced blind to overcome the aforementioned problems.
- An objective of the invention is to provide a counterbalanced blind that can be operated easily without a pull string.
- The counterbalanced blind has a top frame, a bottom bar, a shade mounted between the top frame and the bottom bar, a reel device, two roller devices and two cords. The reel device is mounted in the top frame, and the two roller devices are mounted on the opposite side of the reel device in the top frame. The cords are wound and fastened in the reel device, respectively extend in opposite directions to the roller devices, pass downward through the shade and are fastened on the bottom bar. The bottom bar can be raised or lowered, and position of the bottom bar is retained after releasing the bottom bar.
- Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
-
FIG. 1 is a perspective view of an embodiment of a counterbalanced blind in accordance with the present invention; -
FIG. 2 is a sectional front view of the counterbalanced blind inFIG. 1 ; -
FIG. 3 is a perspective view of a reel device in accordance with the present invention; -
FIG. 4 is a sectional front view of the roller device inFIG. 2 ; -
FIG. 5 is a sectional front view of the counterbalanced blind in a lowered status; -
FIG. 6 is a sectional front view of the counterbalanced blind in a raised status. - With reference to
FIGS. 1 to 4 , a counterbalanced blind in accordance with the present invention comprises a top frame (10), a bottom bar (20), a shade (30), two roller devices (4), a reel device (5) and two cords (60). - The top frame (10) is mounted on walls or ceilings, especially adjacent to windows. With reference to
FIGS. 1 and 2 , the shade (30) is mounted between the top frame (10) and the bottom bar (20). - The two roller devices (4) are mounted separately in the top frame (10), and each roller device (4) has a first roller (41), a second roller (42), and an optional bracket (40). The first roller (41) and the second roller (42) are rotatably mounted on the bracket (40) that is mounted in the top frame (10).
- With further reference to
FIG. 3 , the reel device (5) is mounted between the two roller devices (4) in the top frame (10) and comprises a first reel (51), a second reel (52), a resilient member (53) and an optional casing (50). The first reel (51) and the second reel (52) are mounted rotatably in the casing (50). The first reel (51) has a first gear (511) formed thereon, the second reel (52) has a second gear (521) formed thereon and meshing with the first gear (511) to provide synchronous rotation. The resilient member (53) may be a rotary spring and connects the first reel (51) with the second reel (52). - With reference to
FIG. 4 , one of the cords (60) is fastened and wound on the first reel (51), and the other cord (60) fastened and wound on the second reel (52). The cords (60) respectively extend in opposite directions through the roller devices (4). Each cord (60) is wound on the first roller (41) and the second roller (42), then turned to the first roller (41) to counterbalance forces added on the roller device (4) and extends downward through the shade (30) to be fastened on the bottom bar (20). - With reference to
FIGS. 5 and 6 , users can raise or lower the bottom bar (20) to simultaneously concertina or spread out the shade (30). When the counterbalanced blind is operated, the cords (60) are pulled or released the same distance in opposite directions because the first gear (511) meshes with the second gear (521), so the bottom bar (20) maintains balanced. In addition, the bottom bar (20) is held at a predetermined height when users stop operating it, because the cord (60) wound on each roller device (4) counterbalances the forces added on the roller device (4), so the blind can be operated more easily without a pull string and for improved safety. - Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only. Changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Claims (8)
1. A counterbalanced blind comprising:
a top frame (10);
a bottom bar (20);
a shade (30) mounted between the top frame (10) and the bottom bar (20);
two roller devices (4) mounted separately in the top frame (10) and each roller device (4) having
a first roller (41) rotatably mounted in the top frame (10);
a second roller (42) rotatably mounted in the top frame (10);
a reel device (5) mounted between the two roller devices (4) in the top frame (10) and comprising
a first reel (51) rotatably mounted in the top frame (10) and having a first gear (511) formed thereon;
a second reel (52) rotatably mounted in the top frame (10), having a second gear (521) formed thereon, and the second gear (521) meshing with the first gear (511);
a resilient member (53) mounted on the first reel (51) and connecting the first reel (51) with the second reel (52); and
two cords (60), one of the cords (60) fastened and wound on the first reel (51), and the other cord (60) fastened and wound on the second reel (52), the cords (60) respectively extending in opposite directions through the roller devices (4), each cord (60) wound on the first roller (41) and the second roller (42) of the roller device (4), passing through the shade (30) and fastened to the bottom bar (20) to counterbalance forces added on the roller device (4).
2. The counterbalanced blind as claimed in claim 1 , wherein each cord (60) is wound on the first roller (41), the second roller (42), then turns to the first roller (41) to counterbalance forces added on the roller device (4), and extends downward to be fastened on the bottom bar (20).
3. The counterbalanced blind as claimed in claim 1 , wherein the reel device (5) comprises a casing mounted in the top frame (10), and the first reel (51) and the second reel (52) are mounted rotatably in the casing (50).
4. The counterbalanced blind as claimed in claim 2 , wherein the reel device (5) comprises a casing mounted in the top frame (10), and the first reel (51) and the second reel (52) are mounted rotatably in the casing (50).
5. The counterbalanced blind as claimed in claim 1 , wherein each roller device (4) comprises a bracket (40) mounted in the top frame (10), and the first roller (41) and the second roller (42) are mounted rotatably on the bracket (40).
6. The counterbalanced blind as claimed in claim 2 , wherein each roller device (4) comprises a bracket (40) mounted in the top frame (10), and the first roller (41) and the second roller (42) are mounted rotatably on the bracket (40).
7. The counterbalanced blind as claimed in claim 3 , wherein each roller device (4) comprises a bracket (40) mounted in the top frame (10), and the first roller (41) and the second roller (42) are mounted rotatably on the bracket (40).
8. The counterbalanced blind as claimed in claim 4 , wherein each roller device (4) comprises a bracket (40) mounted in the top frame (10), and the first roller (41) and the second roller (42) are mounted rotatably on the bracket (40).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/561,357 US20110061823A1 (en) | 2009-09-17 | 2009-09-17 | Counterbalanced blind |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/561,357 US20110061823A1 (en) | 2009-09-17 | 2009-09-17 | Counterbalanced blind |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110061823A1 true US20110061823A1 (en) | 2011-03-17 |
Family
ID=43729321
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/561,357 Abandoned US20110061823A1 (en) | 2009-09-17 | 2009-09-17 | Counterbalanced blind |
Country Status (1)
Country | Link |
---|---|
US (1) | US20110061823A1 (en) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103670247A (en) * | 2012-09-18 | 2014-03-26 | 林雅莹 | Curtain |
JP2014208944A (en) * | 2013-04-16 | 2014-11-06 | 林 克明 | Blind and cord guide device thereof |
US20150136892A1 (en) * | 2013-11-20 | 2015-05-21 | Min-Che Hung | Cord winding structure for window blind |
GB2525981A (en) * | 2014-03-28 | 2015-11-11 | Taicang Kingfu Plastic Manufacture Co Ltd | Window shade |
US20160123071A1 (en) * | 2014-11-05 | 2016-05-05 | Teh Yor Co., Ltd. | Cordless Window Shade and Spring Drive System Thereof |
US20160245017A1 (en) * | 2015-02-24 | 2016-08-25 | Yao-Tsung Chen | Drive system for a cordless blind |
US20160281421A1 (en) * | 2015-03-27 | 2016-09-29 | Taicang Kingfu Plastic Manufacture Co., Ltd. | Retarding device for a cord of a window shade |
US9714538B2 (en) | 2014-03-28 | 2017-07-25 | Taicang Kingfu Plastic Manufacture Co., Ltd. | Window blind |
US20170342770A1 (en) * | 2016-05-31 | 2017-11-30 | Nien Made Enterprise Co., Ltd. | Locking mechanism for cord of window covering |
US10273748B2 (en) * | 2016-03-03 | 2019-04-30 | Chin-Fu Chen | Blind body actuator for non-cord window blind assembly |
US10550635B2 (en) | 2017-08-09 | 2020-02-04 | Whole Space Industries Ltd | Window covering control apparatus |
US10676988B2 (en) | 2017-09-20 | 2020-06-09 | Whole Space Industries Ltd. | Window covering control apparatus |
USD935221S1 (en) | 2019-06-26 | 2021-11-09 | Whole Space Industries Ltd | Bottom rail for a window covering |
US11261655B2 (en) * | 2019-05-23 | 2022-03-01 | Teh Yor Co., Ltd. | Window shade and spring drive system thereof |
US20220120133A1 (en) * | 2019-07-12 | 2022-04-21 | Leafy Windoware Co., Ltd. | Curtain cord retracting and releasing device and transmission mechanism thereof |
DE102022102575A1 (en) | 2022-02-03 | 2023-08-03 | Ji Jun | roman blind |
US20230399891A1 (en) * | 2022-06-14 | 2023-12-14 | Hsien-Te Huang | Blind slat positioning device and a window blind thereof |
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US6761203B1 (en) * | 2003-03-31 | 2004-07-13 | Tai-Long Huang | Balanced window blind having a spring motor for concealed pull cords thereof |
US20040154758A1 (en) * | 2003-02-10 | 2004-08-12 | Li-Ming Cheng | Pull down, push up, shade apparatus |
US6823925B2 (en) * | 2002-07-12 | 2004-11-30 | Shades Unlimited, Inc. | Retractable window shade with height adjustment control |
US6962187B2 (en) * | 2002-12-09 | 2005-11-08 | Gilmore Enterprises | Spools for horizontal blinds |
US7117919B2 (en) * | 2001-03-22 | 2006-10-10 | Ren Judkins | Cordless blind with lock mechanism |
US7168476B2 (en) * | 2004-09-29 | 2007-01-30 | Chin-Fu Chen | Cordless activating device for a venetian blind |
US7281563B2 (en) * | 2004-11-09 | 2007-10-16 | Wen-Te Wu | Venetian blind with a cord-winding device |
US20070261798A1 (en) * | 2006-05-11 | 2007-11-15 | Chih-Shen Hung | Folding device for cordless blind |
US20070272364A1 (en) * | 2006-05-25 | 2007-11-29 | Ching Feng Home Fashions Co., Ltd. | Cordless window blind structure |
US7331370B1 (en) * | 2004-08-03 | 2008-02-19 | Shades Unlimited, Inc. | Progressive resistance lifting mechanism for a window covering |
US7343957B2 (en) * | 2005-10-18 | 2008-03-18 | Shih-Ming Lin | Guide roller seat for cord of window covering |
US20090159219A1 (en) * | 2007-12-20 | 2009-06-25 | Nein Made Enterprise Co., Ltd. | Cordless window blind structure |
US7832453B2 (en) * | 2006-08-09 | 2010-11-16 | Ke-Min Lin | Adjusting structure of a curtain for adjusting the angle of curtain blade |
-
2009
- 2009-09-17 US US12/561,357 patent/US20110061823A1/en not_active Abandoned
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US20040129390A1 (en) * | 1997-11-04 | 2004-07-08 | Toti Andrew J | Spring drive system and window cover |
US7117919B2 (en) * | 2001-03-22 | 2006-10-10 | Ren Judkins | Cordless blind with lock mechanism |
US6823925B2 (en) * | 2002-07-12 | 2004-11-30 | Shades Unlimited, Inc. | Retractable window shade with height adjustment control |
US6962187B2 (en) * | 2002-12-09 | 2005-11-08 | Gilmore Enterprises | Spools for horizontal blinds |
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US6761203B1 (en) * | 2003-03-31 | 2004-07-13 | Tai-Long Huang | Balanced window blind having a spring motor for concealed pull cords thereof |
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US7832453B2 (en) * | 2006-08-09 | 2010-11-16 | Ke-Min Lin | Adjusting structure of a curtain for adjusting the angle of curtain blade |
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Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103670247A (en) * | 2012-09-18 | 2014-03-26 | 林雅莹 | Curtain |
JP2014208944A (en) * | 2013-04-16 | 2014-11-06 | 林 克明 | Blind and cord guide device thereof |
US9366076B2 (en) * | 2013-11-20 | 2016-06-14 | Min-Che Hung | Cord winding structure for window blind |
US20150136892A1 (en) * | 2013-11-20 | 2015-05-21 | Min-Che Hung | Cord winding structure for window blind |
GB2525980A (en) * | 2014-03-28 | 2015-11-11 | Taicang Kingfu Plastic Manufacture Co Ltd | Window shade |
GB2525981B (en) * | 2014-03-28 | 2021-03-24 | Taicang Kingfu Plastic Mft Co Ltd | Window shade |
TWI625456B (en) * | 2014-03-28 | 2018-06-01 | No exposed drawstring horizontal blinds | |
GB2525980B (en) * | 2014-03-28 | 2021-03-24 | Taicang Kingfu Plastic Mft Co Ltd | Window shade |
US9714538B2 (en) | 2014-03-28 | 2017-07-25 | Taicang Kingfu Plastic Manufacture Co., Ltd. | Window blind |
GB2525981A (en) * | 2014-03-28 | 2015-11-11 | Taicang Kingfu Plastic Manufacture Co Ltd | Window shade |
KR101871621B1 (en) * | 2014-11-05 | 2018-06-26 | 데 요 컴퍼니 리미티드 | Cordless window shade and spring drive system thereof |
TWI558906B (en) * | 2014-11-05 | 2016-11-21 | 德侑股份有限公司 | Cordless window shade and spring drive system thereof |
KR20160143789A (en) * | 2014-11-05 | 2016-12-14 | 데 요 컴퍼니 리미티드 | Cordless window shade and spring drive system thereof |
JP2017514041A (en) * | 2014-11-05 | 2017-06-01 | テー ヨー シーオー エルティーディー | Unlaced window shade and its spring drive system |
US20160123071A1 (en) * | 2014-11-05 | 2016-05-05 | Teh Yor Co., Ltd. | Cordless Window Shade and Spring Drive System Thereof |
US9797189B2 (en) * | 2014-11-05 | 2017-10-24 | Teh Yor Co., Ltd. | Cordless window shade and spring drive system thereof |
WO2016073577A1 (en) * | 2014-11-05 | 2016-05-12 | Teh Yor Co., Ltd. | Cordless window shade and spring drive system thereof |
CN105569540A (en) * | 2014-11-05 | 2016-05-11 | 德侑股份有限公司 | Cordless Window Shade and Spring Drive System Thereof |
US20160245017A1 (en) * | 2015-02-24 | 2016-08-25 | Yao-Tsung Chen | Drive system for a cordless blind |
US9708851B2 (en) * | 2015-03-27 | 2017-07-18 | Taicang Kingfu Plastic Manufacture Co., Ltd. | Retarding device for a cord of a window shade |
US20160281421A1 (en) * | 2015-03-27 | 2016-09-29 | Taicang Kingfu Plastic Manufacture Co., Ltd. | Retarding device for a cord of a window shade |
US10273748B2 (en) * | 2016-03-03 | 2019-04-30 | Chin-Fu Chen | Blind body actuator for non-cord window blind assembly |
US10563455B2 (en) * | 2016-05-31 | 2020-02-18 | Nien Made Enterprise Co., Ltd. | Locking mechanism for cord of window covering |
US20170342770A1 (en) * | 2016-05-31 | 2017-11-30 | Nien Made Enterprise Co., Ltd. | Locking mechanism for cord of window covering |
US10550635B2 (en) | 2017-08-09 | 2020-02-04 | Whole Space Industries Ltd | Window covering control apparatus |
US10676988B2 (en) | 2017-09-20 | 2020-06-09 | Whole Space Industries Ltd. | Window covering control apparatus |
US11261655B2 (en) * | 2019-05-23 | 2022-03-01 | Teh Yor Co., Ltd. | Window shade and spring drive system thereof |
USD935221S1 (en) | 2019-06-26 | 2021-11-09 | Whole Space Industries Ltd | Bottom rail for a window covering |
US20220120133A1 (en) * | 2019-07-12 | 2022-04-21 | Leafy Windoware Co., Ltd. | Curtain cord retracting and releasing device and transmission mechanism thereof |
DE102022102575A1 (en) | 2022-02-03 | 2023-08-03 | Ji Jun | roman blind |
US20230399891A1 (en) * | 2022-06-14 | 2023-12-14 | Hsien-Te Huang | Blind slat positioning device and a window blind thereof |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |