VERTICAL BLINDS OF THE TYPE WITH FORKLIFTS BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical blind and, more particularly, to a vertical blind type with forklifts that has multiple bands or vertical strips that are pushed and pulled piece per piece. 2. Description of the Prior Art A conventional vertical blind according to the prior art shown in Figure 10 comprises an upper rail 5, three carriers 1 movably placed in the upper rail 5 by seats of trolleys 4, and three strips or canvases (not shown) each connected to a corresponding wheel 1. When in use, the trucks 1 are movable on the top rail 5 to expand or fold the canvases. When the vertical blind contains more than three trolleys 1, the trolley seats 4 easily interfere with each other, such that trolleys 1 can not move smoothly. In this way, the vertical shutter contains three trucks 1 only and can not be expanded to increase its length, so that the length of the vertical shutter is limited, thus limiting the versatility of the vertical shutter. BRIEF COMPENDIUM OF THE INVENTION
The main objective of the present invention is to provide a vertical blind that expands or folds quickly and conveniently. Another object of the present invention is to provide a vertical blind, wherein the vertical blind comprises multiple movable supports between the fixation support and the impulse support, in such a way that the length of the vertical blind expands freely to correspond with the size of the window, thus improving the versatility of the vertical blind. Another object of the present invention is to provide a vertical blind, wherein the fixation seats of the fixation support and the sliding seats of the movable supports and the impulse support have different lengths to correspond with different positions of the fixation support, the supports movable between the fixing support and the impulse support smoothly without interfering with each other, thus facilitating the operation of the vertical blind. Still another object of the present invention is to provide a vertical shutter, wherein the drive block is guided by the respective first mounting slot, and the driven block is guided by the
second respective groove, in such a way that the movable supports and the impulse support move smoothly, therefore facilitating the user the operation of the vertical blind. Another object of the present invention is to provide a vertical blind, wherein a magnetic attraction metal plate of each mobile support is magnetically attracted by the magnet of the magnetic positioning unit, such that each of the movable supports is temporarily placed by the magnetic positioning unit to prevent the moving supports from moving away or moving freely during the expansion of the vertical blind. Other benefits and advantages of the present invention will become apparent after carefully reading the detailed description with appropriate reference to the accompanying drawings. BRIEF DESCRIPTION OF SEVERAL VIEWS OF THE DRAWINGS Figure 1 is a perspective view partially in section of a vertical blind according to the preferred embodiment of the present invention. Figure 2 is a partially exploded perspective view of the vertical blind as shown in Figure 1.
Figure 3 is a partially exploded perspective view of the vertical blind as shown in Figure 1. Figure 4 is a partially exploded perspective view of the vertical blind as shown in Figure 1. Figure 5 is a view on the lateral floor of the vertical blind as shown in the Figure 1. Figure 6 is a cross-sectional view of the upper floor of the vertical blind as shown in Figure 1. Figure 7 is a schematic operational view of the vertical blind as shown in Figure 1. Figure 8 is a schematic operational view of the vertical blind as shown in Figure 6. Figure 9 is a partially exploded perspective view of a vertical blind in accordance with another preferred embodiment of the present invention. Figure 10 is a partially exploded perspective view of a conventional vertical blind according to the prior art.
DETAILED DESCRIPTION OF THE INVENTION With reference to the drawings and initially with Figures 1-6, a vertical blind in accordance with the preferred embodiment of the present invention comprises an upper rail 10, a fixing support 20 fastened to the upper rail 10, a plurality of juxtaposed movable supports 30 placed movably on the upper rail 10 and relatively movable with each other wherein the first of the movable supports 30 is relatively mobile and limited by the fixing support 20, the impulse support 40 is movably placed on the top rail 10 and is movable to rest on the last of the movable supports 30 to be able to pull the movable supports 30, a plurality of driven blocks 30 placed on the fixing support 20 and the movable supports 30, a plurality of impulse blocks 25. placed on movable supports 30 and movable support 40 and movable to rest on a respective driven block 23 for driving the respective driven block 23, at least one fixing seat 50 placed on the fixing support 20 for connecting the fixing support 20 to the upper rail 10, a plurality of sliding seats 500 placed on the movable supports 30 and the impulse support 40, to connect the movable supports 30 and the impulse support 40 in the upper rail 10, a
a plurality of bands 70 placed on the fixing support 20, the movable supports 30 and the impulse support 40, a driving rope unit 60 placed on the impulse support 40 to move the impulse support 40, and a positioning unit magnet 80 disposed on the fixing support 20. The upper rail 10 has an axially extending open sliding guide 11 for receiving the fixing seats 50 of the fixing support 20 and the sliding seats 500 of the mobile supports 30 and the support of impulse 40. Each of the fixing supports 20, movable 30 and impulse 40, has the same construction that is carried out by an aluminum extrusion process. Each of the fixing supports 20, movable 30 and of impulse 40, has an upper portion formed with a fixing portion 21 and a lower portion formed with a mounting channel 27 for positioning the bands 70. Each of the support supports fixing 20, mobile 30 and impulse 40, has a first side formed with a first mounting groove 22 and a second side formed with a second mounting groove 24, in which each of the driven blocks 23 are clamped in the first respective mounting slot 22 of each of the
fixing brackets 20 and movable 30, and each of the impulse blocks 25 is clamped in the respective second mounting groove 24 of each of the movable supports 30 and the impulse support 40. Each of the fixing brackets 20 , mobiles 30 and impulse 40, have a first end and a second end, in which each of the driven blocks 23 is located at the first end of each of the fixing brackets 20 and movable supports 30, and each of the impulse blocks 25 is located at the second end of each of the movable supports 30 and the impulse support 40. The second mounting groove 24 of each of the movable supports 30 is provided with a metal plate of magnetic attraction 26 juxtaposed to the respective impulse block 25 and connected to the magnetic positioning unit 80. The fixing support 20 is provided with two fixing seats 50 located on the first and second ends of the fixing support 20 respectively and attached to the upper rail 10 so that the fixing bracket 20 is fastened to the upper rail 10 by the fixing seats 50, each of the movable supports 30 is provided with a slidable seat 500 located at the first end of each of the movable supports 30 and movable on the upper rail 10
in such a way that each of the movable supports 30 is movable on the upper rail 10 by the respective fixing seat 50, and the impulse support 40 is provided with two slidable spaced seats 500 located on the first end of the impulse support 40 and is movable on the upper rail 10 such that the impulse support 40 is movable on the upper rail 10 by the sliding seats 500. Each of the sliding seats 50 of the fixing bracket 20 is substantially L-shaped and has a bracket 52 having a first end formed with an upwardly extending mounting block 51 attached to the upper rail 10 and a second end formed with a fixed block extending downwardly 53 secured to the fastening portion 21 of the fastening bracket 20. The brackets 52 of the fastening seats 50 have different lengths. Each of the sliding seats 500 of the movable supports 30 and the impulse support 40 are substantially L-shaped and have a transverse bracket 502 having a first end formed by an upstanding mounting block 504 provided with two rollers. opposed 501 rotatable in the upper rail 10 and a second end formed with a fixed block extending downward
503 attached to the fastening portion 21 of each of the movable supports 30 and the impulse support 40. The brackets 502 of the sliding seats 500 have different lengths. The tow rope unit 60 is located at the first end of the impulse carrier 40 between the two spaced slidable seats 500 and is movable on the upper rail 10 by a pulling action of a tow rope (not shown) in such a manner that the impulse support 40 is driven by the driving rope unit 60 to move on the upper rail 10. Each of the bands 70 has a width equal to that of each of the movable fixing supports 20 and the support of impulse 40, and has an upper end formed with an elongated locking strip 71 which is inserted into the mounting channel 27 of each of the movable fastening brackets 20 and the impulse support 40. The magnetic positioning unit 80 is placed on the second end of the fixing bracket 20 and includes a housing 82 secured to the fixing bracket 20, two metal plates 84 placed in the housing 82, and a magnet 83 placed in the housing 82 and located in the housing 82. between the metal plates 84 to attract the magnetically attractive metal plate 26 of each of
the movable supports 30. The housing 82 of the magnetic positioning unit 80 has an interior formed with a receiver recess 820 for receiving the metal plates 84 and the magnet 83 and has a side formed with an overhanging locking plate 81 attached to the support 20. When assembling, the driven block 23 of the fixing bracket 20 is movable in the second respective mounting groove 24 of the first of the movable supports 30, and the impulse block 25 of the first of the movable supports 30 is movable in the first respective mounting groove 22 of the fixing bracket 20. In addition, the driven block 23 of each of the movable supports 30 is movable in the respective second mounting groove 24 of an adjacent mobile support 30, and the driving block 25 of each of the movable supports 30 is movable in the first respective mounting groove 22 of an adjacent mobile support 30. Furthermore, the impulse block 25 of the impulse support 40 is movable in the first respective mounting groove 22 of the last of the movable supports 30, and the driven block 23 of the last of the movable supports 30 is movable in the second respective mounting groove 24 of the impulse support 40. In operation, with reference to the Figures 1-8, when the vertical blind is folded, the seat
Slidable 100 of the first of the movable supports 30 rests on the fixing seat 50 of the first end of the fixing support 20, the slidable seat 500 of each of the movable supports 30 rests on the slidable seat 500 of an adjacent mobile support 30 , and one of the slidable seats 500 of the impulse support 40 rests on the slidable seat 500 of the last of the movable supports 30 as shown in Figure 1, in such a way that the fixing support 20, the movable supports 30 and the The impulse support 40 is juxtaposed one above the other as shown in Figure 6 to fold the vertical blind to expose the window. At this time, the brackets 52 of the fixing seats 50 of the fixing support 20 have different lengths, and the brackets 502 of the sliding seats 500 of the movable supports 30 and the impulse support 40 have different lengths to correspond to the different ones. positions of the fixing support 20, the movable supports 30 and the impulse support 40, in such a way that the mounting blocks 51 of the fixing seats 50 of the fixing support 20 and the rollers 501 of the sliding seats 500 of the supports mobiles 30 and the impulse support 40 are located in the same horizontal line.
When the user wishes to expand the vertical blind, the pull cord unit 60 is operated by the pull cord to pull the drive support 40 to the right (or inward). When the impulse block 25 of the impulse support 40 moves to rest on the driven block 23 of the last of the moving supports 30 as shown in Figure 8, the last of the movable supports 30 is pulled by the impulse support 40 to move to the right (or inward). Then, the impulse block 25 of each of the movable supports 30 moves to rest on the driven block 23 of an adjacent mobile support 30, such that the movable supports 30 are driven back by the impulse support 40 for move to the right (or inward). Finally, when the impulse block 25 of the first of the movable supports 30 moves to rest on the driven block 23 of the fixing support 20, the first of the movable supports 30 is stopped by the fixing support 20 to stop the movement of the movable supports 30 and the impulse support 40, in such a way that the vertical shutter is fully expanded as shown in Figure 7 to cover the window. As shown in Figure 6, the magnetically attractive metal plate 26 of each of the
movable supports 30 is magnetically attracted by a magnet 83 of the magnetic positioning unit 80, such that each of the movable supports 30 is temporarily positioned by the magnetic positioning unit 80 to prevent the movable supports 30 from pulling and moving freely during the expansion of the vertical blind. When the user wishes to fold the vertical blind, the pull cord unit 60 is operated by the pull cord to push the impulse holder 40 to the left (or outward). When one of the slidable seats 500 of the impulse support 40 moves to rest on the slidable seat 500 of the last of the movable supports 30, the last the movable supports 30 is pushed by the impulse support 40 to move to the left (or out). Then, the slidable seat 500 of each of the movable supports 30 moves to rest on the slidable seat 500 of an adjacent mobile support 30, in such a way that the movable supports 30 are pushed by the impulse support 40 to move towards the left (or out). Finally, when the sliding seat 500 of the first of the movable supports 30 moves to rest on the fixing seat 50 on the fixing support 20, the first of the movable supports 30 is stopped by the support
fastening 20 for stopping the movement of the movable supports 30 and the impulse support 40, in such a way that the vertical shutter is completely folded as shown in Figure 1 to expose the window. As shown in Figure 9, each of the strips 700 includes a connecting plate 701 connected to each of the movable and 30 movable fastening brackets 20, and a cloth strip 702 disposed detachably on the platen. connection 701. The connection plate 701 of each of the belts 700 has an upper end formed with an elongated locking strip 703 inserted in the mounting channel 27 of each of the movable fixing brackets 20 and the support impulse 40 and a lower end formed with a link portion 704. The fabric strip 702 of each of the strips 700 has an upper end formed with a link section 705 detachably linked over the link portion 704 of the connecting plate 701. Accordingly, the vertical blind comprises multiple movable supports 30 which move between the fixing support 20 and the impulse support 40, in such a way that the length of the vertical blind expands freely. to correspond with the size of the window, therefore improving the versatility of the vertical blind. In addition, the fixing seats 50
of the fixing bracket 20, the sliding seats 500 of the movable supports 30 and the impulse support 40 have different lengths to correspond with different positions of the fixing support 20, and the movable supports 30 and the impulse support 40, in such a way that the movable supports 30 move between the fixing support 20 and the impulse support 40 smoothly without interfering with each other, thus facilitating the operation of the vertical blind. Moreover, the impulse block 25 is guided by the respective first mounting groove 22, and the driven block 23 is guided by the respective second mounting groove 24, in such a way that the movable supports 30 and the impulse support 40 are They move smoothly, therefore facilitating the user the operation of the vertical blind. In addition, the magnetically attractive metal plate 26 of each of the movable supports 30 is magnetically attracted by the magnet 83 of the magnetic positioning unit 80 to prevent the movable supports 30 from pulling and moving freely during the expansion of the vertical shutter. Although the invention has been explained in connection with its preferred embodiment (s) as mentioned above, it is understood that many other possible modifications and variations may be made without departing from the scope of the present invention. It's by
therefore, it is contemplated that the appended claim or claims will cover such modifications and variations that fall within the true scope of the invention.