EP2777445A1 - Driving assembly for curtain - Google Patents

Abstract

A curtain driving assembly includes a support (1), two connectors (2, 20) and multiple transmitting disks (3, 30). The support (1) has an installation hole (11), and a connection ring (13) is pivotably connected to the installation hole (11). The connection ring (13) has multiple first engaging portions (131) on the inside thereof. Each of the two connectors (2, 20) has a driving portion (21) located corresponding to the support (1). The transmitting disks (3, 30) are connected to the driving portions (21) respectively, and are connected to the connection ring (13). Each of the transmitting disks (3, 30) has multiple second engaging portions (31) which are engaged with the first engaging portions (131) of the connection ring (13). The driving assembly controls multiple sets of curtains.

Description

FIELD OF THE INVENTION
• The present invention relates to a curtain driving assembly, and more particularly, to a curtain driving assembly which is easily assembled and adjusted. The driving assembly drives multiple sets of curtains.
BACKGROUND OF THE INVENTION
• A conventional curtain/roller blind generally includes two supports on two ends thereof and the driving assembly is connected to one of the two supports so as to control the operations of the curtain. When a wall has multiple windows, it is not suitable to install individual curtain driving assemblies for the individual curtains. The users have to operate the curtains one by one, and a gap will be formed between the adjacent curtains and the feature for shading is reduced.
• Taiwan Patent No. M304304 discloses a curtain driving assembly comprising at least two sets of driving members and a support. Each driving member has a passive member integrally connected with a connection member. The two respective connection members relative to the adjacent driving members are configured in pair and coupled to each other. One of the connection members has an inner gear portion, and the other has an outer gear portion which engaged with the inner gear portion. The support has a hole to be pivotably connected with one of the passive members.
• However, when the two sides of the curtain cannot be synchronically lowered, the curtain, the support and the driving members have to be disassembled and then adjusted. This is inconvenient for the users.
• Because the driving members are connected to each other in pair, the two driving members have to be precisely and co-axially connected to each other. This requires more assembly techniques and time to assemble the whole curtain driving assembly.
• The present invention intends to provide a curtain driving assembly to improve the shortcomings above mentioned.
SUMMARY OF THE INVENTION
• The present invention relates to a curtain driving assembly and comprises a support having an installation hole defined therethrough, and a connection ring is pivotably connected to the installation hole. The connection ring has multiple first engaging portions on the inside thereof. Two connectors each have a driving portion which is located corresponding to the support. Multiple transmitting disks are connected to the driving portions of the two connectors respectively. The transmitting disks are connected to the connection ring. Each of the transmitting disks has multiple second engaging portions which are engaged with the first engaging portions of the connection ring.
• Preferably, a bushing is located between the connection ring and the support.
• Preferably, the bushing has multiple ridges on outside thereof, and the ridges are located corresponding to the periphery of the installation hole of the support.
• Preferably, the support has a recess defined in the inside of the installation hole. The bushing has a insertion on the outside thereof, and the insertion is inserted into the recess.
• Preferably, a cover has a notch and the support is engaged with the notch. A slot is located in the inside of the cover and communicates with the notch, and the transmitting disks and the support are engaged with the slot.
• Preferably, the support has a rib, and a fixing hole is defined through the cover and communicates with the slot. The rib is engaged with the fixing hole.
• Preferably, the connection ring has a contact portion around the inner periphery thereof, and the driving portions of the connectors each have multiple first connection portions. The transmitting disks each have multiple second connection portions which are located corresponding to the first connection portions of the driving portion. The transmitting disks contact to the contact portion.
• Preferably, the first connection portions are protrusions, and the second connection portions are holes which are configured for the first connection portions to engage with.
• Preferably, the first engaging portion of the connection ring is inner teeth, and the second engaging portions of the transmitting disks are outer teeth.
• Preferably, one of the transmitting disks has a pivot, and the other transmitting disk has a central hole with which the pivot is pivotably engaged.
• Preferably, the support has a board which is slidably connected with a base.
• Preferably, the board has a threaded hole, and an urging member is threadedly connected to the threaded hole and contacts the base.
• One aspect of the present invention is to provide a curtain driving assembly for controlling multiple sets of curtains. When the scrolled lengths of the curtains are not balanced, the cover can be removed and the support is moved toward a lateral side of the base to separate the first engaging portions of one of the transmitting disks from the second engaging portions. The pivot on one of the transmitting disks is still engaged with the other transmitting disk. Under this arrangement, when the connector is rotated, the curtain is adjusted.
• Another aspect of the present invention is that the connectors are indirectly rotated by the engagement and transmitting of the inner teeth of the connection ring and the outer teeth of the first engaging portions of the transmitting disks, so that the connectors do not need to be precisely aligned with each other. This reduces the assembling time.
• The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
• Fig. 1 is an exploded view to show the curtain driving assembly of the present invention;
• Fig. 2 is a perspective view to show the combination of the support, the bushing and the connection ring of the present invention;
• Fig. 3 shows that the two connectors are to be indirectly connected to the connection ring;
• Fig. 4 shows that the cover is to be connected to the support and the transmitting disks;
• Fig. 5 shows a perspective view of curtain driving assembly of the present invention;
• Fig. 6 shows a side cross sectional view of the curtain driving assembly of the present invention;
• Fig. 7 shows the curtain driving assembly of the present invention is cooperated with multiple sets of curtains, and the scrolled lengths of the curtains are not aligned in the same level;
• Fig. 8 shows that the cover is separated from to the support and the transmitting disks;
• Fig. 9 is a cross sectional view showing that one of the transmitting disks is disengaged from the connection ring so as to make the adjustment of the driving assembly of the present invention;
• Fig. 10 is a perspective view to show the adjustment of the driving assembly of the present invention, and
• Fig. 11 shows that the scrolled lengths of the curtains are evenly lowered in the same level.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
• Referring toFig. 1, the curtain driving assembly of the present invention comprises asupport 1 having aninstallation hole 11 and arib 12. Arecess 111 is defined in the inside of thesupport 1 and communicates with theinstallation hole 11. Aconnection ring 13 is pivotably connected to theinstallation hole 11 and has multiple firstengaging portions 131 on the inside thereof and acontact portion 132. The firstengaging portions 131 are inner teeth. Aflange 133 extends from the outside of theconnection ring 13 which contacts an end of abushing 14. Thebushing 14 is located between theconnection ring 13 and thesupport 1 so as to reduce wearing of theconnection ring 13. Thebushing 14 hasmultiple ridges 141 on outside thereof, and theridges 141 are located corresponding to the periphery of theinstallation hole 11 of thesupport 1 to form a stop. Thebushing 14 has aninsertion 142 which located on the outside of thebushing 14 and is inserted into theslot 111 to prevent thebushing 14 from rotating. Thesupport 1 has aboard 15. Theboard 15 has a threadedhole 151, and an urgingmember 152 is threadedly connected to the threadedhole 151.
• Twoconnectors 2, 20 each have a drivingportion 21 which is located corresponding to thesupport 1. The drivingportions 21 of theconnectors 2, 20 each have multiplefirst connection portions 211 which are protrusions.
• Multiple transmitting disks 3, 30 are connected to the drivingportions 21 of the twoconnectors 2, 20 respectively. The transmittingdisks 3, 30 connected to theconnection ring 13. Each of the transmittingdisks 3, 30 has multiple secondengaging portions 31 which are outer teeth and engaged with the inner teeth of the first engagingportions 131 of theconnection ring 13. The transmittingdisks 3, 30 each have multiplesecond connection portions 32 which are holes and located corresponding to the protrusions of thefirst connection portions 211 of the drivingportion 21. One of the transmittingdisks 3, 30 contacts to thecontact portion 132. The transmittingdisks 3 has apivot 33, and the transmittingdisk 30 has acentral hole 34 with which thepivot 33 is pivotably engaged.
• Acover 4 has anotch 41 and aslot 411 which is located in the inside of thecover 4 and communicates with thenotch 41. Thenotch 41 and theslot 411 are configured to accommodate thesupport 1 and the transmittingdisks 3, 30. That is to say, the transmittingdisks 3, 30 and thesupport 1 are installed in theslot 411. A fixinghole 412 is defined through thecover 4 and communicates with theslot 411, so that thesupport 1 is engaged with thecover 4 by engaging therib 12 with the fixinghole 412.
• Referring toFigs. 1 and2, when initially assembling, thebushing 14 is firstly installed to theinstallation hole 11 of thesupport 1, and theridges 141 contacts thesupport 1 and adjacent to theinstallation hole 111. Theinsertion 142 is located corresponding to and engaged with therecess 111 of thesupport 1. Theconnection ring 13 is then installed into thebushing 14 to let theflange 133 of theconnection ring 13 to contact thebushing 14. Consequently, the initial assembly of the curtain driving assembly is completed by combining thesupport 1, theconnection ring 13 and thebushing 14 together, as shown inFig. 2. Wherein, theconnection ring 13 is rotatable relative to thesupport 1. Thefirst connection portions 211 of theconnectors 2, 20 are engaged with thesecond connection portions 32 of the transmittingdisks 3, 30 respectively.
• Referring toFigs. 3 to 7, to complete the overall installation of the curtain driving assembly, theboard 15 is slidably connected to a base 16 which is fixed to the wall, and the urging 152 is rotated toward and contacts to the base 16 so as to fastenly position thesupport 1 to thebase 16. The curtain "A" has a scrolling member "B" on one side thereof, and the other side of the curtain "A" is connected to theconnector 20 whosetransmitting disk 30 is connected to theconnection ring 13 to engage the secondengaging portions 31 of the transmittingdisk 30 with the first engagingportions 131 of theconnection ring 13, and the transmittingdisk 30 contacts the contact portion 132 (as shown inFig. 3). Theother connector 2 is connected with the other curtain "A" and theother transmitting disk 3, and the secondengaging portions 31 of thetransmitting disk 3 are engaged with the first engagingportions 131 of the connection ring 13 (as shown inFigs. 3 and4). Then, thecover 4 is installed to accommodate the combination of thesupport 1, theconnection ring 13, thebushing 14 and the transmittingdisks 3, 30 within thenotch 41 and theslot 411, and therib 12 of thesupport 1 is engaged with the fixinghole 412 of the cover 4 (as shown inFigs. 4 to 6). Under the above-mentioned arrangement, the curtain driving assembly configured for controlling multiple sets of curtains "A" are assembled. Theconnectors 2, 20 each are respectively cooperated with the transmittingdisks 3, 30 whose outer teeth are connected to the inner teeth of theconnection ring 13 to form an indirect transmitting relationship. Therefore, theconnectors 2, 20 do not need to precisely and co-axially connected to each other.
• When in use, referring toFigs. 3,6 and7, the user pulls the bead chain of one of the scrolling member "B", and the corresponding curtain "A" and thecorresponding connector 2 or 20 are activated, such that the other curtain "A" is also adjusted concurrently. More specifically, for example, when theconnector 2 is activated to rotate, the rotation of theconnector 2 drives thetransmitting disk 3 to rotate as an integral part of theconnector 2 by the connection of thefirst connection portions 211 and thesecond connection portion 32. Because thetransmitting disk 3 is engaged with theconnection ring 13 by the engagement of the first and second engagingportions 131, 31, theconnection ring 13 is driven to rotate by the rotation of thetransmitting disk 3. Based on the same arrangement, theother transmitting disk 30 which is driven by the rotation of theconnection ring 30, theother connector 20 which is rotated with the transmittingdisk 30, and the other curtain "A" which is rotated with theconnector 20 are rotating simultaneously.
• Referring toFigs. 8 and9, when the scrolled lengths of the curtains "A" are not evenly lowered or lifted (as shown inFig. 7), thecover 4 is removed and the urgingmember 152 is loosened, so that thesupport 1 is moved toward the lateral side of the base 16 to separate the first engagingportions 131 of thetransmitting disk 3 from the second engagingportion 31. Thepivot 33 on thetransmitting disk 3 is still engaged with thecentral hole 34 of the transmittingdisk 30. When theconnector 2 is rotated as shown inFigs. 9 and10, the scrolled length of the curtain "A" is adjusted to be the same as the scrolled length of the other curtain "A" as shown inFig. 11. After the adjustment is completed, thesupport 1 is returned to its initial position to be fastenly position to thebase 16, and thecover 4 is connected to thesupport 1. The curtain "A" is adjusted without disassembling the curtain "A" and the whole curtain driving assembly, such that the cost time for the adjustment of the uneven scrolled lengths of the curtains is greatly reduced.
• While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.

Claims (10)

1. A curtain driving assembly comprising: a support (1) and two connectors (2, 20);characterized in that the support (1) having an installation hole (11) defined therethrough, a connection ring (13) pivotably connected to the installation hole (11), the connection ring (13) having multiple first engaging portions (131) on an inside thereof; the two connectors (2, 20) each having a driving portion (21) which is located corresponding to the support (1), multiple transmitting disks (3, 30) connected to the driving portions (21) of the two connectors (2, 20) respectively, the transmitting disks (3, 30) installed in the connection ring (13), each of the transmitting disks (3, 30) having multiple second engaging portions (31) which are engaged with the first engaging portions (131) of the connection ring (13).
2. The driving assembly as claimed in claim 1, wherein a bushing (14) is located between the connection ring (13) and the support (1).
3. The driving assembly as claimed in claim 2, wherein the bushing (14) has multiple ridges (141) on outside thereof, and the ridges (141) are located corresponding to a periphery of the installation hole (11) of the support (1).
4. The driving assembly as claimed in claim 1, wherein a cover (4) has a notch (41), the support (1) is engaged with the notch (41), a slot (411) is located in an inside of the cover (4) and communicates with the notch (41), and the transmitting disks (3, 30) and the support (1) are installed in the slot (411).
5. The driving assembly as claimed in claim 4, wherein the support (1) has a rib (12), a fixing hole (412) is defined through the cover (4) and communicates with the slot (411), the rib (12) is engaged with the fixing hole (412).
6. The driving assembly as claimed in claim 1, wherein the connection ring (13) has a contact portion (132), the driving portions (21) of the connectors (2, 20) each have multiple first connection portions (211), the transmitting disks (3, 30) each have multiple second connection portions (32) which are located corresponding to the first connection portions (211) of the driving portion (21), one of the transmitting disks (3, 30) contact to the contact portion (132).
7. The driving assembly as claimed in claim 1, wherein the first engaging portions (131) of the connection ring (13) are inner teeth, and the second engaging portions (31) of the transmitting disks (3, 30) are outer teeth.
8. The driving assembly as claimed in claim 1, wherein one of the transmitting disks (3) has a pivot (33), and the other transmitting disk (30) has a central hole (34) with which the pivot (33) is pivotably engaged.
9. The driving assembly as claimed in claim 1, wherein the support (1) has a board (15) which is slidably connected with a base (16).
10. The driving assembly as claimed in claim 9, wherein the board (15) has a threaded hole (151), and an urging member (152) is threadedly connected to the threaded hole (151) and contacts the base (16).

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