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Not applicable.
1. Field of the Invention
The present invention relates generally to curtain structure and more particularly to an innovative structural design of a two-way up-down curtain.
2. Description of Related Art Including Information Disclosed Under 37 CFR 1.97 and 37 CFR 1.98.
Generally, windows in houses or work places are equipped with curtains (e.g. rolling screen, cloth curtain, Roman curtain, blind and so on). They can prevent the light from penetrating through the windows into the rooms, and prevent others from looking into the rooms. For the known curtains, a pull rope controls the lift and drop of the curtain for shielding effect, but the sunlight shoots into the room through the bottom of the window at a low angle at dusk. If the curtain is dropped to the lowest level, the whole window is shielded and the room will be dark and stuffy. Therefore, a two-way up-down curtain is developed by some practitioners.
Taking a general view of known two-way up-down curtains, they usually consist of a fixed top base 01, a coil rope controller inside the fixed top base 01, a mobile top 02, a bottom 03 and a curtain 04 connecting the mobile top 02 to the bottom 03. The coil rope controller goes through the mobile top 02, curtain 04 and bottom 03 by a thread. Thereby, the user can adjust the state of the curtain 04 by pushing and pulling the mobile top 02 or bottom 03 by hand. However, this known structure type still has the below mentioned problems according to practical experience. As shown in
Thus, to overcome the aforementioned problems of the prior art, it would be an advancement if the art to provide an improved, structure that can significantly improve the efficacy.
Therefore, the inventor has provided the present invention of practicability after deliberate design and evaluation based on years of experience in the production, development and design of related products.
The improved structure of a two-way up-down curtain of this invention has a pulling base at the bottom of the curtain, and the pulling base is only fixed to the extended end of the first thread mutually as an innovative structure design. In comparison to the prior art technology mentioned above, when the user pulls the pulling base to fully expand the curtain downwards, if he continues to apply a force to the pulling base (applying a downward force to the pulling base probably as a natural action or in order to make sure the curtain cannot be unfolded anymore), only the first thread will be pulled, the curtain and the mobile top will not move, so as to avoid clearance between the moved mobile top and the fixed top base for more convenient and practical unobviousness.
Although the invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed.
Please refer to
The aforementioned two-way up-down curtain A can be a Roman curtain, blind and so on, and composed is of a fixed top base 10, transverse long extension type. The fixed top base 10 contains a device space 11 and its bottom is drilled several eyelets 12.
A coil rope control device 20 is located in the device space 11 of the fixed top base 10, and it is coiled with at least a first thread 30 and at least a second thread. The aforementioned first and second thread 30, 32 thread out of the eyelet 12 in the bottom of fixed top base 10.
A curtain 40 is provided under the fixed top base 10 and composed of a mobile top 41, a bottom 42 and a curtain 43 between the mobile top 41 and bottom 42. The aforementioned first thread 30 penetrates through the mobile top 41, curtain 43 and bottom 42 downwards, and the first thread 30 threads out of the bottom 42 downwards with an extended end 31, and the second thread 32 is fixed to the mobile top 41. As shown in
A pulling base 50 is provided under the bottom 42 of curtain 40, only fixed to the extended end 31 of the first thread 30 mutually, so that the user can change the state of the curtain 43 by pushing and pulling the mobile top 41 or pulling the bottom base 50. As shown in
As shown in
Based on the aforesaid structural composition design, the kernel design of the two-way up-down curtain A of this invention is a pulling base 50 at the bottom 42 of the curtain 40, and the pulling base 50 is only fixed to the extended end 31 of the first thread 30 mutually. As shown in
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Number | Date | Country | |
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20140144596 A1 | May 2014 | US |