GB2430225A - Roller blind drive mechanism - Google Patents

Roller blind drive mechanism Download PDF

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Publication number
GB2430225A
GB2430225A GB0518705A GB0518705A GB2430225A GB 2430225 A GB2430225 A GB 2430225A GB 0518705 A GB0518705 A GB 0518705A GB 0518705 A GB0518705 A GB 0518705A GB 2430225 A GB2430225 A GB 2430225A
Authority
GB
United Kingdom
Prior art keywords
wheel
chain
planet wheel
retaining
slot
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
Application number
GB0518705A
Other versions
GB2430225B (en
GB0518705D0 (en
Inventor
Tai-Ping Liu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB0518705A priority Critical patent/GB2430225B/en
Publication of GB0518705D0 publication Critical patent/GB0518705D0/en
Publication of GB2430225A publication Critical patent/GB2430225A/en
Application granted granted Critical
Publication of GB2430225B publication Critical patent/GB2430225B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E06B9/40—Roller blinds
    • E06B9/42—Parts or details of roller blinds, e.g. suspension devices, blind boxes
    • 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
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)

Abstract

A drive mechanism for a roller blind has a bracket 10, a wheel 20 mounted on the bracket, a side cover 30, a planet wheel 40 engaged with the wheel 20, a chain-retaining wheel 50 secured within the side cover 30, a driving wheel 60 engaged with the planet wheel 40, a beaded chain 59 and a fixing block 70 engaged with the driving wheel 60, the planet wheel 40 has a toothed recess on the side facing the bracket 10 and a toothed member on its other side. A supporter 45 is located between the inner wall of the central aperture 43 of the planet wheel 40 and the fixing pin 27 (see figure 5). When the beaded chain 59 is pulled, the planet wheel revolves around the fixing pin 27 and causes the driving wheel 60 and the fixing block 70 to revolve together, whereby a curtain can be raised or lowered. The constriction is suitable for heavy blinds.

Description

1 2430225
SHADE ROLLER CAPABLE OF BEARING HEAVY LOAD
1. Field of the Invention
* The present invention relates to a shade roller, and particularly relates to a shade roller that can lift or lower a curtain by pulling on a beaded chain.
2. Description of the Related Art
A conventional shade roller is composed of a fixing pin, a beaded chain, a chain-retaining wheel, a planet wheel with four protrusions, a side cover having a tooth-shaped channel defined therein, and a fixing block having a groove. When they are mounted together, the beaded chain is pulled, which causes the chain-retaining wheel and the planet wheel to revolve, and in turn, the fixing block is brought to revolve, whereby the curtain is raised or lowered.
If the curtain is accidentally pulled, the protrusions secured in the grooves are pushed by the fixing block, but stopped by the chainretaining wheel and the side cover that is engaged with the planet wheel, so that the fixing block will not continue to revolve.
However, the planet wheel is made of plastic, and heavy curtains may break off the four protrusions. The side cover, the chain-retaining wheel, and the fixing block are mounted only by the fixing pin, which can easily collapse.
The main objective of the present invention is to provide a shade roller capable of bearing a heavy load and comprises: a seat with a socket, a ioop attached to the seat and comprised of a plate having a first flange with a smaller external diameter than that of the plate, a first tooth member and a first hole formed on a side of the plate opposite to the seat; a side cover mounted around the ioop and having a chamber and an opening that sleeves over the first flange of the loop; a planet wheel connected to the ioop, held inside the chamber in the side cover and having an aperture defined through the planet wheel, a first inner toothshaped hole defined a side facing the ioop, and a second tooth member having a same center with the first inner tooth-shaped hole formed on a side opposite to the loop; a chain-retaining wheel connected to the planet wheel and having a bead channel defined around a periphery edge, an eccentric depression defined on a side facing the planet wheel, a round slot defined around the eccentric depression to sleeve onto the first flange of the loop, and a through slot and a fixing slot defined on a side opposite to the eccentric depression; a driving wheel connected to the planet wheel and the chain-retaining wheel and having a second hole, a second flange held inside the fixing slot in the chain-retaining wheel, a round cam held inside the through slot in the chain- retaining wheel and a second inner tooth-shaped hole defined in a side facing the planet wheel and partially engaging with the second tooth member in the planet wheel; a fixing block with an orifice attached to the driving wheel; a fixing pin extending through the plate, the side cover, the planet wheel, the chain retaining wheel, the driving wheel, and fastened on the fixing block; a supporter provided between the inner wall of the aperture of the planet wheel and the fixing pin; and a beaded chain connected to and held in the bead channel in the chain- retaining wheel.
The advantages of the invention are: 1. The connection is sturdier than the prior art: the shade roller has a socket defined there in, and the ioop having a lug is inserted in the socket to be fixed, in addition, the ioop is mounted with the side cover, the planet wheel, the chain-retaining wheel, the driving wheel and the fixing block by a fixing pin.
2. It is capable of bearing a heavy load: the above elements are all made of metal, except for a supporter, the bean chain, and the side cover; in addition, the loop is engaged with the planet wheel, which is further engaged with the driving wheel, so the whole structure is sturdy enough to bear a heavy load such as heavy curtains.
IN THE DRAWINGS
Fig. 1 is an exploded view of a shade roller in accordance with this invention; Fig. 2 is an exploded view from another angle of the shade roller in accordance with this invention; Fig. 3 is a perspective view of the shade roller in accordance with this invention; Fig. 4 is a sectional side view of the shade roller in accordance with this invention; and Fig. 5 is a sectional view of an end face of the shade roller along line 5- in Fig. 4.
With reference to Figs. 1-2, a shade roller has a seat (10) of L-shaped cross section fixed on a wall, a ioop (20) hooked onto the seat (10), a side cover (30) provided round the loop (20), a planet wheel (40) engaged with the loop (20), a chain-retaining wheel (50) secured in the side cover (30), a driving wheel (60) laid over the chain retaining wheel (50) and engaged with the planet wheel (40), and a fixing block (70) engaged with the driving wheel (60) and revolving with the chain retaining wheel (50).
With reference to Fig. 1-4, the seat (10) has a socket (11) defined through.
The loop (20) comprises a plate (21), and a first flange (22) with a smaller external diameter than that of the plate (21) is formed on the plate (21) opposite to the seat (10). A first tooth member (23) is also formed on the plate (21) on the same side as the first flange (22). A lug (24) is formed on the opposite side of the plate (21) facing the seat (10), with a hook member (240) extending downwards, so that when the lug (24) is engaged in the socket (11) and pressed downward, the hook member (240) is hitched on the seat (10), whereby the loop (20) is securely hung on the seat (10). In addition, a first hole (25) is defined at the center of the plate (21), through which a fixing pin (27) is mounted through the plate (21), the planet wheel (40), the chain retaining wheel (50), the driving wheel (60), and the fixing block (70), then riveted on the fixing block (70) or mounted on the fixing block (70) by a retaining ring (not shown).
The side cover (30) has a chamber opening facing away from the seat (10) to receive the planet wheel (40) and the chain-retaining wheel (50). An opening (31) is defined on the side of the side cover (30) facing the seat (10) that sleeves onto the first flange (22) of the loop (20).
The planet wheel (40) has a first inner tooth-shaped hole (41) with an internal diameter larger than the diameter of the first tooth member (23) defined at the side facing to the seat (10) and partially engaged with the first tooth member (23). A second tooth member (42) having a same center with the first inner tooth-shaped hole (41) is formed on the side facing away from the seat (10).
An aperture (43) is also defined through the planet wheel (40) to allow the fixing pin (27) through, whereby the planet wheel is able to revolve around the fixing pin (27).
The chain-retaining wheel (50) has a bead channel (51) defined around a periphery edge to secure a bead chain (59). An eccentric depression (53) is defined on the side of the chain-retaining wheel (50) facing the seat (10) and a round slot (52) is defined on the same side around the depression (53) to sleeve onto the first flange (22) of the loop (20). When the chain-retaining wheel is mounted on the loop (20), the planet wheel (40) is exactly located in the eccentric depression (53). A through slot (54) and a fixing slot (55), both having a same center with the round slot (52), are respectively defined on the side facing away from the seat (10), wherein the fixing slot (55) is around the through slot (54) and fitted to the driving wheel (60).
The driving wheel (60) is a round plate having a second hole (61) to allow the fixing pin (27) through. A second flange (63) and a round cam (62) provided on the driving wheel (60) are respectively secured in the fixing slot (55) and the through slot (54). The round cam (62) has a second inner tooth-shaped hole (64) defined therein, which partially engages with the second tooth member (42). With reference to Fig. 5, a supporter (45) is provided between an inner wall of the aperture (43) and the fixing pin (27). The supporter (45) tightly presses the second inner tooth-shaped hole (64) to the second tooth member (42) to ensure correct engagement. Multiple protrusions (65) are axially formed on the side of the driving wheel (60) facing away from the seat (10).
The fixing block (70) has an orifice (71) to allow the fixing pin through, and multiple holes (72) are defined round the orifice (71) facing the seat (10) to receive the protrusions (65). The fixing block (70) is normally sleeved on an axial tube (not shown) that holds a curtain.
The above elements are all made of metal, with the exception of the supporter (45), bead chain (59), and the side cover (30), which enhances the strength of the shade roller. When the bead chain (59) is pulled clockwise or counter-clockwise, the eccentric depression (53) causes the second tooth member (42) to revolve around the fixing pin (27). The second tooth member (42) further causes the driving wheel (60) and the fixing block (70) to revolve, whereby the curtain is raised or lowered.

Claims (3)

  1. WHAT IS CLAIMED IS: 1. A shade roller capable of bearing a heavy load
    comprising a seat (10) with a socket (11), a ioop (20) attached to the seat (10) and comprised of a plate (21) having a first flange (22) with a smaller external diameter than that of the plate (21), a first tooth member (23) and a first hole (25) formed on a side of the plate (21) opposite to the seat (10); a side cover (30) mounted around the loop (20) and having a chamber and an opening (31) that sleeves over the first flange (22) of the loop (20); a planet wheel (40) connected to the loop (20), held inside the chamber in the side cover (30) and having an aperture (43) defined through the planet wheel (40), a first inner tooth-shaped hole (41) defined a side facing the loop (20), and a second tooth member (42) having a same center with the first inner tooth-shaped hole (41) formed on a side opposite to the loop (20); a chain-retaining wheel (50) connected to the planet wheel (40) and having a bead channel (51) defined around a periphery edge, an eccentric depression (53) defined on a side facing the planet wheel (40), a round slot (52) defined around the eccentric depression (53) to sleeve onto the first flange (22) of the loop (20), and a through slot (54) and a fixing slot (55) defined on a side opposite to the eccentric depression (53); a driving wheel (60) connected to the planet wheel (40) and the chain- retaining wheel (50) and having a second hole (61), a second flange (63) held inside the fixing slot (55) in the chain-retaining wheel (50), a round cam (62) held inside the through slot (54) in the chain-retaining wheel (50) and a second inner tooth-shaped hole (64) defined in a side facing the planet wheel (40) and partially engaging with the second tooth member (42) in the planet wheel (40); a fixing block (70) with an orifice (71) attached to the driving wheel (60); a fixing pin (27) extending through the plate (21), the side cover (30), the planet wheel (40), the chain retaining wheel (50), the driving wheel (60), and fastened on the fixing block (70); a supporter (45) provided between the inner wall of the aperture (43) of the planet wheel (40) and the fixing pin (27); and a beaded chain (59) connected to and held in the bead channel (51) in the chain-retaining wheel (50).
  2. 2. The shade roller capable of bearing a heavy load as claimed in claim 1, wherein a lug (24) is formed on the side of the plate (21) facing the seat (10) with a hook member (240).
  3. 3. i'he shade roller capable of hearing a load as claimed in claim 1, wherein multiple protrusions (65) are axially formed on the a side of the driving wheel (60), and multiple holes (72) are defined on a side of the fixing block (70) to receive the protrusions (65).
    3. The shade roller capable of bearing a heavy load as claimed in claim 1, wherein multiple protrusions (65) are axially formed on the a side of the driving wheel (60), and multiple holes (72) are defined on a side of the fixing block (70) to receive the protrusions (65).
    Amendments to the claims have been filed as follows WHAT IS CLAIMED IS: 1. A shade roller capable of bearing a load comprising a seat (10) with a socket (11), a positioner hooked onto the seat (10) and comprised of a plate (21) having a *first flange (22) with a smaller external diameter than that of the plate (21), a first tooth member (23) and a first hole (25) formed on a side of the plate (21) opposite to the seat (10); a side cover (30) mounted around the positioner (20) and having a chamber and an opening (31) mounted around the first flange (22) of the positioner (20); a planet wheel (40) connected to the positioner (20), held inside the chamber in the side cover (30) and having an aperture (43) defined through the planet wheel (40), a first inner tooth-shaped hole (41) defined a side facing the positioner (20); and a second tooth member (42) having a same center with the first inner tooth- shapedhole (41) formed on a side opposite to the positioner (20); a chain- retaining wheel (50) connected to the planet wheel (40) and having a bead channel (51) defined around a periphery edge, an eccentric depression (53) defined on a side facing the planet wheel (40); a round slot (52) defined around the eccentric depression (53) to sleeve onto the first flange (22) of the positioner (20); and a through slot (54) and a fixing slot (55) defined on a side opposite ________ to the eccentric depression (53); a driving wheel (60) connected to the planet wheel (40) and the chain- retaining wheel (50) and having a second hole (61), a second flange (63) held inside the fixing slot (55) in the chain-retaining wheel (50), a round cam (62) held inside the through slot (54) in the chain-retaining wheel (50) and a second inner tooth-shaped hole (64) defined in a side facing the planet wheel (40) and partially engaging with the second tooth member (42) in the planet wheel (40); a fixing block (70) with an orifice (71) engaged with the driving wheel (60); a fixing pin (27) extending through the plate (21), the side cover (30), the planet wheel (40), the chain retaining wheel (50), the driving wheel (60), and fastened on the fixing b]ock (70); a supporter (45) provided between the inner wall of the aperture (43) of the planet wheel (40) and the fixing pin (27); and a beaded chain (59) connected to and held in the bead channel (51) in the chain-retaining wheel (50).
    2. The shade roller capable of bearing a load as claimed in claim 1, wherein a lug (24) is fbrmed on the side of the plate (21) facing the seat (10) with a hook member (240).
GB0518705A 2005-09-14 2005-09-14 Shade roller capable of bearing heavy load Expired - Fee Related GB2430225B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0518705A GB2430225B (en) 2005-09-14 2005-09-14 Shade roller capable of bearing heavy load

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0518705A GB2430225B (en) 2005-09-14 2005-09-14 Shade roller capable of bearing heavy load

Publications (3)

Publication Number Publication Date
GB0518705D0 GB0518705D0 (en) 2005-10-19
GB2430225A true GB2430225A (en) 2007-03-21
GB2430225B GB2430225B (en) 2007-08-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB0518705A Expired - Fee Related GB2430225B (en) 2005-09-14 2005-09-14 Shade roller capable of bearing heavy load

Country Status (1)

Country Link
GB (1) GB2430225B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2448550A (en) * 2007-04-21 2008-10-22 Levolux At Ltd Roller blind drive mechanism comprising drive sprocket with flexible teeth

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0940553A2 (en) * 1998-03-06 1999-09-08 MOTTURA S.p.A. Device for actuating a roller blind
GB2393203A (en) * 2003-08-19 2004-03-24 Louver Lite Ltd Roller blind control
GB2399853A (en) * 2003-03-10 2004-09-29 Tai-Ping Liu Lift control device for a roller shade

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0940553A2 (en) * 1998-03-06 1999-09-08 MOTTURA S.p.A. Device for actuating a roller blind
GB2399853A (en) * 2003-03-10 2004-09-29 Tai-Ping Liu Lift control device for a roller shade
GB2393203A (en) * 2003-08-19 2004-03-24 Louver Lite Ltd Roller blind control

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2448550A (en) * 2007-04-21 2008-10-22 Levolux At Ltd Roller blind drive mechanism comprising drive sprocket with flexible teeth
GB2448550B (en) * 2007-04-21 2012-05-09 Levolux At Ltd Roller blind mechanism

Also Published As

Publication number Publication date
GB2430225B (en) 2007-08-29
GB0518705D0 (en) 2005-10-19

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20090914