Double Coil Spring Cord Reel for Curtains with No Exposed Drawcords
A technology of rope reels and coil springs, applied in windows/doors, door/window protection devices, buildings, etc., which can solve the problems of unused curtains, increased costs, and complicated structures
Active Publication Date: 2021-01-26
SHEEN WORLD TECH CORP
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- Application Information
AI Technical Summary
Problems solved by technology
[0003] The above-mentioned automatic rope reel has no problems in use for ordinary-sized curtains, but if it is used with large-sized curtains, it is easy to cause the lower beam to rise smoothly due to insufficient tension
Therefore, the current solution is to increase the number of the aforementioned automatic rope reels to two or more groups, but the increase in the number of parts will inevitably bring about the problems of increased cost and complicated structure.
Method used
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Embodiment Construction
[0024] Please see first figure 1 and figure 2 , The double coil spring type rope reel 10 of the first embodiment of the present invention includes a base 20 , a driving unit 30 and a transmission unit 40 .
[0025] The base 20 is fixed on an upper beam (not shown) and has a top plate 21 and a bottom plate 23. The bottom surface of the top plate 21 has a plurality of upper side columns 22, and the top surface of the bottom plate 23 has a plurality of lower side columns 24. 23 are assembled together by clamping the upper and lower side columns 22,24. In addition, one end of the base 20 has a plurality of first and second guiding rods 25 and 26 arranged symmetrically. Both ends of the first and second guiding rods 25 and 26 are connected to the top plate 21 and the bottom plate 23 respectively.
[0026] Please refer to figure 2 and image 3 , the driving unit 30 has a first coil spring gear 31 , a second coil spring gear 32 , a first coil spring 33 , a rotating wheel 34 and...
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The invention relates to a double-coil spring type rope reel, which includes a driving unit and a transmission unit. The drive unit has a first coil spring gear, a second coil spring gear engaged with the first coil spring gear, a first coil spring connected to the first coil spring gear and the second coil spring gear, and a coil spring adjacent to the first coil spring gear The runner and a second coil spring connecting the second coil spring gear and the runner, the transmission unit has a first transmission gear, a second transmission gear and two lifting transmission ropes, the first and second transmission gears can be The second coil spring gear is driven to rotate synchronously, and the two lifting transmission ropes are respectively arranged on the first and second transmission gears. Through the combination of the first and second coil springs, the double-coil spring type rope reel of the present invention can be independently applied to large-size curtains without additional installation, thereby achieving the effects of reducing costs and simplifying the structure.
Description
technical field [0001] The invention relates to a cord-free curtain, in particular to a double-coil spring cord reel for a cord-free curtain. Background technique [0002] The curtain without exposed drawstring mainly uses the automatic rope reel set in the upper beam to reel up the lifting transmission rope. Since the lifting transmission rope is connected with the lower beam, the lower beam will be closed during the winding process of the lifting transmission rope. Relative to the upper beam, it rises gradually, so that the blades are stacked together by the upward movement of the lower beam, so as to achieve the purpose of folding the curtain. [0003] The above-mentioned automatic rope reel has no problems in use for ordinary-sized curtains, but if it is used with large-sized curtains, it is easy to fail to drive the lower beam up smoothly due to insufficient pulling force. Therefore, the current solution is to increase the number of the aforementioned automatic rope re...
Claims
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IPC IPC(8): E06B9/322E06B9/32
Inventor 陈弘澔蔡明哲
Owner SHEEN WORLD TECH CORP