Note: Descriptions are shown in the official language in which they were submitted.
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SUN-SHADING ADJUSTMENT STRUCTURE OF ZEBRA SHADE
BACKGROUND OF THE INVENTION
1. Field of the Invention
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The present invention relates generally to a sun-shading
adjustment structure of zebra shade, and more particularly to a
sun-shading adjustment structure of zebra shade, which includes a
shade sheet adjustment unit for adjusting the alignment error of
the transparent faces and the nontransparent faces of the zebra
shade sheet. Therefore, in the case that a gap exists on the zebra
shade sheet to allow sunlight to get in, by means of the shade sheet
adjustment unit, the gap can be eliminated to enhance the
sun-shading effect.
2. Description of the Related Art
The shade sheet of a conventional zebra shade has nontransparent
faces and transparent faces. The nontransparent faces and
transparent faces are alternately arranged to shade the sunlight.
The zebra shade is installed in such a manner that one end of the
shade sheet is located on a shade sheet winding unit. Then the shade
sheet is wound over a lower weight to affix the other end of the
shade sheet onto a shade component fixing unit. When it is desired
to have sunlight project into the room, the shade sheet is wound
up by the shade sheet winding unit to align the transparent faces
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with each other. Under such circumstance, the sunlight can pass
through the two transparent faces .into the room as a light source.
Alternatively, the shade sheet can be wound up to the topmost end,
permitting the sunlight to fully project into the room. In contrast,
when it is desired to shade the sunlight, the shade sheet is unwound
and released downward. When the nontransparent faces are
horizontally aligned with the transparent faces, the shade sheet
becomes in a totally nontransparent state. At this time, the
sunlight is interrupted by the nontransparent faces from getting
into the room so as to achieve a sun-shading effect. The shade sheet
is wound/unwound by the shade sheet winding unit. The roller of the
shade sheet winding unit is controlled and driven by a bead chain
to rotate. During the winding process, the nontransparent faces and
the transparent faces must be totally aligned with each other so
as to achieve the sunlight shading effect. However, it is hard to
adjust the shade sheet by small angle so as to eliminate the gaps
existing on the shade sheet, which permit the sunlight to get into
the room. Therefore, the conventional zebra shade can hardly fully
shade the sunlight and the sunlight can still partially get into
the room. This needs to be improved.
SUMMARY OF THE INVENTION
It is therefore a primary aspect of the present invention to
provide a sun-shading adjustment structure of zebra shade, which
includes a shade sheet adjustment unit. The shade sheet adjustment
unit can be used to adjust the relative angle between the transparent
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faces and the nontransparent faces of the zebra shade sheet.
Therefore, in use of the zebra shade, in the case that gaps exist
on the zebra shade sheet to allow sunlight to get in, by means of
the shade sheet adjustment unit, the gap can be eliminated to enhance
the sun-shading effect. Moreover,_ the sun-shading adjustment
structure of zebra shade includes a support unit for holding and
supporting the shade sheet adjustment unit and keeping the shade
sheet adjustment unit in a straight state. Accordingly, the
adjustment can be more precisely performed.
To achieve the above, the sun-shading adjustment structure of
zebra shade of the present invention includes:
a component fixing unit disposed on an upper wall face of inner
side of a window, the component fixing unit including more than one
fixing board, the fixing board having a front end and a rear end,
the front end or the rear end of the fixing board being formed with
engagement teeth;
a decorative board locating unit including more than one
connection seat, the connection seat including a chucking mouth for
engaging with the engagement teeth of the fixing board of the
component fixing unit and an engagement board for connecting with
a decorative board;
a shade sheet winding unit including two holders disposed on two
sides of the fixing board and a roller mounted between the two
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holders;
a shade sheet adjustment unit including two locating seats
disposed on two sides of the fixing board, the locating seats being
positioned at the front end of the shade sheet winding unit or the
rear end thereof, the volume of the locating seats being slightly
smaller than the volume of the holders of the shade sheet winding
unit, a roller being mounted between the two locating seats, the
roller being driven by a bead chain controller to rotate;
a shade sheet having transparent faces and nontransparent faces,
- which are alternately arranged, one end of the shade sheet being
connected to the roller of the shade sheet winding unit and the other
end of the shade sheet being connected to the roller of the shade
sheet adjustment unit;
a lower weight unit including a main body, a drive shaft, two
sleeves and two side caps, the shade sheet being wound over the drive
shaft, the sleeves serving to locate the drive shaft and being
drivingly rotatably connected with the drive shaft, the two side
caps being connected with the sleeves and capped on two sides of
the main body; and
a support unit including an engagement body at upper end and an
arched recess downward extending from the engagement body, the
roller of the shade sheet adjustment unit being rotatably positioned
in the arched recess.
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Accordingly, the shade sheet winding unit serves to wind up the
shade sheet to align the transparent faces and the nontransparent
faces of the shade sheet with each other or misalign the transparent
faces and the nontransparent faces of the shade sheet from each other
so as to achieve a sun-shading effect. In addition, the shade sheet
adjustment unit is further used to adjust the alignment error of
the transparent faces and the nontransparent faces of the shade
sheet so as to eliminate the gaps between the nontransparent faces
.and enhance the sun-shading effect.
The present invention can be best understood through the
following description and accompanying drawings, wherein:
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a perspective exploded view of the present invention;
Fig. 2 is a perspective assembled view of the present invention;
Fig. 3 is a perspective exploded view of the shade sheet
adjustment unit of the present invention;
Fig. 4 is a perspective assembled view of the shade sheet
adjustment unit of the Present invention;
Fig. 5 is a perspective view of the support unit of the present
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invention;
Fig. 6 is a perspective view showing the installation of the
support unit of the present invention;
Fig. 7 is a perspective view showing the installation of the shade
sheet of the present invention;
Fig. 8 is a perspective exploded view of the lower weight unit
of the present invention;
Fig. 9 is a perspective view showing that the lower weight unit
of the present invention is to be enclosed by a shade sheet fabric;
Fig. 10 is a perspective view showing that the lower weight unit
of the present invention is enclosed by the shade sheet fabric;
Fig. 11 is a sectional view of the lower weight unit of the present
invention;
Fig. 12 is a plane assembled view of the present invention;
Fig. 13 is a plane view showing the installation of the present
invention;
Fig. 14 is a plane view showing that gaps exist on the shade sheet
of the present invention;
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Fig. 15 is a plane view showing that the shade sheet adjustment
unit of the present invention is used to eliminate the gaps;
Fig. 16 shows the installation of the present invention in
another aspect; and
Fig. 17 is a plane view of another embodiment of the present
invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Please refer to Fig. 1. The present invention includes a
component fixing unit 1, a decorative board locating unit 2, a shade
sheet winding unit 3, a shade sheet adjustment unit 4, a support
unit 5, a shade sheet 6 connected with the shade sheet winding unit
3 and the shade sheet adjustment unit 4, and a lower weight unit
7 for the shade sheet 6 to wind over and connect therewith. The
component fixing unit 1 (as shown in Figs. 1 and 2) includes more
than one fixing board 10. The fixing board 10 is formed with break ,
lines 11 for cutting the fixing board 10. The front and rear ends
of the fixing board 10 are formed with engagement teeth 12, 13. By
means of fixing members, the fixing board 10 can be mounted under
the upper wall face on inner side of a window with the engagement
teeth 12 of one end extending and protruding therefrom.
The decorative board locating unit 2 (as shown in Fig. 1) has
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a connection seat 200. The connection seat 200 includes a chucking
mouth 20 for engaging with the engagement teeth 12 of one end of
the fixing board 10 of the component fixing unit 10 and an engagement
board 22 for connecting with a decorative board 21. Accordingly,
the decorative board 21 can be engaged and connected to the edge
of upper side of the window. Two cover boards 24, 25 formed with
break lines 23 are fitted on two sides of the decorative board 21.
The shade sheet winding unit 3 (as shown in Figs. 1 and 2) includes
two holders 30 disposed qn two sides of the fixing board 10 of the
component fixing unit 1 and a roller 32 mounted between the two
holders 30. The roller 32 is controlled by a bead chain controller
33 to rotate. One end of the shade sheet is affixed to the outer
circumference of the roller 32, whereby the shade sheet 32 is
controlled by the roller 32 to wind/unwind and move up and down.
The shade sheet adjustment unit 4 (as shown in Figs. 2, 3 and
4) includes two locating seats 40, 41 disposed on two sides of the
fixing board 10 of the component fixing unit 1. The locating seats
40, 41 are positioned at the front end of the shade sheet winding
unit 3 or the rear end thereof. The volume of the locating seats
40, 41 is slightly smaller than the volume of the holders 30, 31
of the shade sheet winding unit 3. A small-diameter roller 42 is
mounted between the two locating seats 40, 41. The roller 42 is also
controlled and driven by a bead chain controller 43 to rotate (as
shown in Fig. 4).
The support unit 5 (as shown in Figs. Sand 6) includes more than
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one support body 50. The upper end of the support body 50 has an
engagement body 500 for engaging with the engagement teeth 12 of
the fixing board 10 of the component fixing unit 1. The lower end
of the support body 50 has an integrally extending arched recess
51. An abutment rib 510 is disposed at an outer end of the arched
recess 51 and protrudes therefrom. The roller 42 of the shade sheet
adjustment unit 4 is positioned in the arched recess 51 so as to
keep the roller 42 in a straight state and prevent the roller 42
from downward curving due to its own length and weight. The roller
42 is driven by the bead chain controller 43 .to rotate so as to truly
adjust the rotational angle of the roller 42 and winding/unwinding -.
length of the shade sheet (as shown in Fig. 6).
The shade sheet 6 (as shown in Fig. 7) is made of yarn material.
The shade sheet 6 is formed with two kinds of sunshade yarn faces,
that is, the transparent faces 60 and the nontransparent faces 61.
The transparent faces 60 and the nontransparent faces 61 are
alternately arranged. The shade sheet 6 is wound over the lower
weight unit 7 and then two ends of the shade sheet 6 are respectively
connected to the shade sheet winding unit 3 and the shade sheet
adjustment unit 4.
The lower weight unit 7(as shown in Fig. 8) includes amain body
70, a drive shaft 71, two sleeves 72, 73, two side caps 74 and a
locating plate 75. The outer circumference of the drive shaft 71
is formed with several splines 710. The drive shaft 71 is further
formed with a central axial passage 711. Each sleeve 72, 73 has a
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boss 720, 730 at one end. The boss 720, 730 has a configuration
identical to that of the passage 711. The bosses 720, 730 are
directly fitted and connected in two ends of the passage 711. Each
sleeve 72, 73 further has a disc section 721, 731 at the other end.
A through hole 722, 732 is formed through the sleeve 72, 73 from
the disc section 721, 731 to free end of the boss 720, 730. Each
side cap 74 has a protruding circular post 740. The circular posts
740 of the side caps 74 are fitted in the through holes 722, 732,
whereby the drive shaft 71 is rotatably located between the two side
caps 74. A metal post 75 is enclosed in the circular post 740 for
reinforcing the circular post 740. An insertion block 741 is
disposed at the bottom end of the side cap 74 for engaging with the
main body 70. The side cap 74 is further formed with a central
perforation 742. A fastening screw 743 can be passed through the
perforation 742 to integrally lock the side cap 74 with the main
body 70. Two wall sections 700, 701 upward extend from the upper
side of the main body 70 to define a space for receiving therein
the drive shaft 71. A locating slot 76 is formed on the bottom of
the space for the locating plate 75 to insert therein. The locating
plate 75 is made of a flexible material and can be inserted into
the locating slot 76 of the main body 70.
As shown in Fig. 9, when assembled, a shade sheet fabric 770 is
first affixed to the surface of the lower weight by means of
double-face adhesive tape 77 to wrap the lower weight. Thereafter,
the locating plate 75 is inserted into the locating slot 76 for fully
fixing the shade sheet fabric 770 to cover the lower weight (as shown
to
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in Fig. 10). Then, the two side caps 74 are locked on two sides of
the main body 70 by means of the fastening screws 743. Under such
circumstance, the drive shaft 71 is positioned in the space on the
upper side of the main body 70 between the two wall sections 700,
701 to complete the entire lower weight structure (as shown in Fig.
11).
Referring to Fig. 12, the installation of the present invention
is such that the shade sheet winding unit 3 and the shade sheet
adjustment unit 4 are side by side and back and forth arranged under
the fixing board 10 of the component fixing unit 1. Immediately
thereafter, the fixing board 10 is locked under the upper wall face
on inner side of the window by means of the fixing members with the
engagement teeth 12 of the fixing board 10 protruding from the frame
of the window (as shown in Fig. 13). In this case, the decorative
board 21 can be located on the outer edge of the upper side of the
window by means of the connection seats 200 of the decorative board
locating unit 2 to cover the present invention and achieve a
beautiful appearance. Finally, the shade sheet winding unit 3, the
bead chain controller 33 and the roller 32 are mounted between the
two holders 30, 31. One end of the shade sheet 60 is fixedly connected
with the roller 32. The shade sheet 60 has transparent faces and
nontransparent faces, which are alternately arranged. The other end
of the shade sheet is wound over the lower weight 6 to fixedly
connected to the roller 42 of the shade sheet adjustment unit 4 to
complete the assembling process of the zebra shade (as shown in Fig.
13).
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Referring to Fig. 14, the adjustment of the present invention
is such that the bead chain controller 33 of the shade sheet winding
unit 3 is used to control the roller 32 to clockwise or
counterclockwise rotate, whereby the shade sheet 60 is upward wound
or downward unwound. When it is desired to have the light, the
transparent faces of the shade sheet are aligned with each other,
permitting the sunlight to get in. When it is desired to shade the
light, the transparent face and the nontransparent face of the shade
sheet are aligned with each other to shade the sunlight. In the case
that the transparent face and the nontransparent face are not
precisely aligned with each other and there is a gap, the bead chain
controller 43 of the shade sheet adjustment unit 4 is pulled to
rotate the roller 42. The roller 42 has smaller diameter so that
the shade sheet is adjusted by small angle to minify the gap or even
eliminate the gap. Accordingly, the shade sheet can be
micro-adjusted to minimize the gap and achieve better sun shading
effect (as shown in Fig. 15).
Please now refer to Fig. 16, which shows another embodiment of
the present invention. In this embodiment, the decorative board
locating unit 2 is mounted on inner window or outer window or
arranged on both the front side and the rear side to enhance the
tidiness and beautify the appearance of the shade sheet. More than
one cellular separation body 7 is disposed on the fixing board 10,
whereby the engagement teeth 12, 13 of the fixing board 10 are spaced
from the wall face by a specific distance. In this case, the
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connection seats 200 of the decorative board locating unit 2 can
be engaged on the engagement teeth 12, 13. Accordingly, the
decorative boards 21 can be connected to both the inner window and
a place in adjacency to the window to achieve a more beautiful
appearance.
Please now refer to Fig. 17, which shows still another embodiment
of the fixing board 8 of the component fixing unit 1 of the present
invention. The front end of the fixing board 8 is formed with
engagement teeth 80 and the rear end of the fixing board 8 is formed
with an insertion channel 81. In the case that the shade sheet
adjustment unit 4 is mounted on the front edge, the connection seat
200 of the decorative board locating unit 2 is engaged with the
engagement teeth 80 and the support body 50 of the support unit 5
is also engaged with the engagement teeth 80 to support the roller
42 of the shade sheet adjustment unit 4. In the case that the shade
sheet adjustment unit 4 is mounted on the rear edge, the engagement
body of another type of support unit can be inserted in the insertion
channel 81. The C-shaped arched recess of the lower end of the
engagement body can hold and support the roller 42 of the shade sheet
adjustment unit 4 to prevent the roller 42 from curving downward
and keep the roller 42 straight. In this case, the adjustment can
be more precisely performed.
The above embodiments are only used to illustrate the present
invention, not intended to limit the scope thereof. The scope of
the claims should not be limited by the preferred embodiments, but
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should be given the broadest interpretation consistent with the
description as a whole.
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