This application claims priority of Chinese Application No. 201520792674.X, filed on Oct. 14, 2015.
The disclosure relates to a window blind, and more particularly to a window blind that has hidden ladder strings.
As shown in
The conventional window blind has the following drawbacks:
1. When the lower rail 3 is raised such that the slats 2 are stacked on the lower rail 3, each of the ladder strings 4 is curled so as to contact an inner surface of each of the glass panes. The curled portion of each of the ladder strings 4 may easily scratch an UV (ultraviolet) coating formed on the inner surface of each of the glass panes, and even scratch the glass panes.
2. Since the distance between each of the through holes of the slats 2 and the distal end of the corresponding end portion is greater than the width of the inner wall section of each of the side frames 103 of the outer framework 1, the through holes cannot be covered by the side frames 103 of the outer framework 1. When the angle of each of the slats 2 is adjusted for obstructing light, light can still pass through the through holes of the slats 2.
3. Similar to the above, the ladder strings 4 and the pull cords cannot be covered by the inner wall section of each of the side frames 103 of the outer framework 1, so that the conventional window blind is not visually esthetic.
Therefore, an object of the disclosure is to provide a window blind that can overcome at least one of the aforesaid drawbacks associated with the prior art.
According an aspect of the disclosure, the window blind includes an outer framework and a blind unit. The outer framework includes an upper frame that extends in a first direction, a lower frame that is spaced apart from the upper frame in a second direction transverse to the first direction, and two side frames each of which is connected between a respective one of two opposite ends of the upper frame and a corresponding one of two opposite ends of the lower frame, and is spaced apart from the other one of the side frames in the first direction. The upper frame, the lower frame and the side frames cooperatively define a retaining space there among. Each of the side frames has an open groove that extends in the second direction and that has an opening in spatial communication with the retaining space. The retaining space and the open grooves of the side frames cooperatively form an operation space. The blind unit includes a plurality of slats that are disposed in the operation space and that are arranged in the second direction, and two ladder strings. Each of the slats extends in the first direction, and has an intermediate portion that is retained in the retaining space, and two end portions that respectively extend from two opposite ends of the intermediate portion into the open grooves of the side frames. Each of the ladder strings is retained in a respective one of the open grooves, and interconnects the corresponding end portions of the slats that are retained in the respective one of the open grooves. The ladder strings are respectively covered by the side frames. The end portions of each of the slats are respectively covered by the side frames.
According to another aspect of the disclosure, the window blind includes an outer framework, a blind unit disposed in the outer framework, and an operation unit disposed on the outer framework and operably connected to the blind unit. The outer framework includes two spaced-apart light-transmissive plates. The blind unit includes a plurality of slats each of which extends in a first direction, and two ladder strings. The slats are arranged in a second direction transverse to the first direction. Each of the ladder strings extends in the second direction and interconnects the slats. The outer framework further includes a cover unit that is disposed on the light-transmissive plates, and that covers the ladder strings.
Other features and advantages of the disclosure will become apparent in the following detailed description of the embodiments with reference to the accompanying drawings, of which:
Before the disclosure is described in greater detail, it should be noted that like elements are denoted by the same reference numerals throughout the disclosure.
Referring to
The outer framework 10 includes an upper frame 11 that extends in a first direction (X), a lower frame 12 that is spaced apart from the upper frame 11 in a second direction (Y) transverse to the first direction (X), two side frames 13 each of which is connected between a respective one of two opposite ends of the upper frame 11 and a corresponding one of two opposite ends of the lower frame 12, and is spaced apart from the other one of the side frames 13 in the first direction (X), and two spaced-apart light-transmissive plates 14. The upper frame 11, the lower frame 12 and the side frames 13 are disposed between the light-transmissive plates 14, and cooperatively define a retaining space 15 there among.
Each of the side frames 13 has a base wall section 131, two side wall sections 132 that respectively extend from two opposite edges of the base wall section 131 opposite to each other in a third direction (Z) (see
Each of the light-transmissive plates 14 has an inner surface 141 that faces the other one of the light-transmissive plates 14, an outer surface 142 that is opposite to the inner surface 141, and an UV coating 143 that is formed on the inner surface 141. The upper frame 11, the lower frame 12 and the side frames 13 are braced between the inner surfaces 141 of the light-transmissive plates 14. In this embodiment, each of the light-transmissive plates 14 is configured as a glass pane.
The blind unit 20 includes a plurality of slats 21 that are disposed in the operation space 16 and that are arranged in the second direction (Y), a lower rail 22 that is disposed in the operation space 16 and that is disposed under the slats 21, two ladder strings 23, and two pull cords 24.
Each of the slats 21 extends in the first direction (X), and has an intermediate portion 211 that is retained in the retaining space 15, and two end portions 212 that respectively extend from two opposite ends of the intermediate portion 211 into the open grooves 133 of the side frames 13. Each of the end portions 212 of each of the slats 21 has a through hole 213. In this embodiment, each of the slats 21 has an arc height (H, see
The lower rail 22 has an intermediate segment 221 that is retained in the retaining space 15, and two end segments 222 that respectively extend from two opposite ends of the intermediate segment 221 into the open grooves 133 of the side frames 13.
Each of the ladder strings 23 is retained in a respective one of the open grooves 133 of the side frames 13, and interconnects the corresponding end segment 222 of the lower rail 22 and the corresponding end portion 212 of each of the slats 21.
The pull cords 24 interconnect the slats 21 and the lower rail 22. In this embodiment, each of the pull cords 24 is retained in a respective one of the open grooves 133 of the side frames 13, extends through the through hole 213 of the corresponding end portion 212 of each of the slats 21, and is connected to the corresponding end segment 222 of the lower rail 22.
In this embodiment, the end portions 212 of each of the slats 21 are respectively covered by the side frames 13, the end segments 222 of the lower rail 22 are respectively covered by the side frames 13, the ladder strings 23 are respectively covered by the side frames 13, and the pull cords 24 are respectively covered by the side frames 13.
The operation unit 30 includes an interior operating member 31 that is operably disposed in the operation groove 135 of the one of the side frames 13, and an exterior operating member 32 that is operably disposed on the outer surface 142 of one of the light-transmissive plates 14. The interior operating member 31 is operably connected to the ladder strings 23 and the pull cords 24. The exterior operating member 32 is magnetically coupled to the interior operating member 31. Movement of the exterior operating member 32 drives the interior operating member 31 to adjust the angle of each of the slats 21 via the ladder strings 23, and to raise or lower the lower rail 22 via the pull cords 24 (see
By virtue of the configuration of the first embodiment, the end portions 212 of each of the slats 21, the end segments 222 of the lower rail 22, the ladder strings 23 and the pull cords 24 are operably retained in the open grooves 133 of the side frames 13, and are hidden by the side frames 13.
The advantages of this disclosure are as follows.
1. Referring to
2. Since the end portions 212 of each of the slats 21 are respectively retained in the open grooves 133 of the side frames 13, the through holes 213 of each of the slats 21 are respectively covered by the side frames 13. When the angle of each of the slats 21 are adjusted for obstructing light, light is blocked from passing through the through holes 213 of the slats 21.
3. Since the end portions 212 of each of the slats 21, the end segments 222 of the lower rail 22, the ladder strings 23 and the pull cords 24 are hidden by the side frames 13, the window blind of this disclosure is visually esthetic.
4. In this embodiment, the arc height (H) of each of the slats 21 is greater than that of the abovementioned prior art for enhancing the stiffness of the slats 21, so that each of slats 21 may have a relatively large length in the first direction (X).
The outer framework 10 further includes a cover unit 17 that is disposed on the light-transmissive plates 14. The slats 21, the lower rail 22, the ladder strings 23 and the pull cords 24 are retained in the retaining space 15.
The cover unit 17 includes two spaced-apart first covering coatings 171 that are disposed on the outer surface 142 of one of the light-transmissive plates 14, and two spaced-apart second covering coatings 172 that are disposed on the outer surface 142 of the other one of the light-transmissive plates 14. Each of the first covering coatings 171 extends in the second direction (Y), and covers a respective one of the end portions 212 of each of the slats 21, a respective one of the end segments 222 of the lower rail 22, a respective one of the ladder strings 23 and a respective one of the pull cords 24. Each of the second covering coatings 172 extends in the second direction (Y), and covers a respective one of the end portions 212 of each of the slats 21, a respective one of the end segments 222 of the lower rail 22, a respective one of the ladder strings 23 and a respective one of the pull cords 24.
Since the end portions 212 of each of the slats 21, the end segments 222 of the lower rail 22, the ladder strings 23 and the pull cords 24 are hidden by the cover unit 17, the second embodiment is visually esthetic.
While the disclosure has been described in connection with what are considered the exemplary embodiments, it is understood that this disclosure is not limited to the disclosed embodiments but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements.
Number | Date | Country | Kind |
---|---|---|---|
201520792674.X | Oct 2015 | CN | national |