U.S. patent number 3,809,143 [Application Number 05/267,566] was granted by the patent office on 1974-05-07 for automatic control for venetian blind.
Invention is credited to Ayhan Ipekgil.
United States Patent |
3,809,143 |
Ipekgil |
May 7, 1974 |
AUTOMATIC CONTROL FOR VENETIAN BLIND
Abstract
Apparatus for automatically controlling a venetian blind is
provided within a cornice box from which the blind is suspended.
The apparatus includes a first and second drive motor for driving
shafts provided with reels. Thus, in order to raise the blind a
pair of cords, one on each side of the blind, is taken up by reels
on a drive shaft being rotated by a first motor; and in order to
lower the blind the pair of cords are played out from the reels by
reversing the rotation of the first motor. The slats for the blind
are supported by transverse cord members connected across a front
and back cord provided on each side of the blind. Thus, in order to
close the blind the front cord on each side of the blind is taken
up by reels on a drive shaft being rotated by the second motor and
the back cord on each side of the blind is simultaneously played
out of reels on a drive shaft being rotated by the second motor;
and in order to open the blind the direction of movements of the
front and back cords is reversed by reversing the rotation of the
second motor. Push buttons on a conveniently positioned panel
provide for controlling the operation of the blind by selectively
actuating the first and second motors.
Inventors: |
Ipekgil; Ayhan (Los Angeles,
CA) |
Family
ID: |
23019319 |
Appl.
No.: |
05/267,566 |
Filed: |
June 29, 1972 |
Current U.S.
Class: |
160/168.1P;
160/DIG.17 |
Current CPC
Class: |
E06B
9/322 (20130101); Y10S 160/17 (20130101) |
Current International
Class: |
E06B
9/28 (20060101); E06B 9/322 (20060101); E06b
009/30 () |
Field of
Search: |
;160/166-178 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Caun; Peter M.
Claims
1. A Venetian blind provided with an automatic control, the
combination comprising:
a casing,
a first reversible motor mounted in said casing, said first motor
having a drive shaft,
a pair of first reels on the drive shaft of said first motor,
a pair of first pulley means,
a pair of first cords, each of said cords being wound on a reel of
said pair of first reels and guided by said pair of first pulley
means to respectively extend down from the opposite end portions of
said casing,
a second reversible motor mounted in said casing, said second
reversible motor having a drive shaft,
a pair of second reels and a pair of third reels on the drive shaft
of said second motor,
a pair of second pulley means and a pair of third pulley means,
a pair of second cords, each of said cords being wound on a reel of
said pair of second reels and guided by said pair of second pulley
means to respectively extend down from the opposite end portions
and said casing,
a pair of third cords, each of said cords being wound on a reel of
said pair of third reels in a sense opposite to the direction in
which the pair of second cords is wound on the pair of second reels
and guided by said pair of third pulley means to respectively
extend down from the opposite end portions of said casing,
a plurality of vertically spaced transverse cord members connected
across one of the cords of the pair of second cords and one of the
cords of the pair of third cords extending down on either of the
end portions of the casing,
a plurality of horizontally disposed vertically spaced slats, each
slat having its outer end supported below either of the end
portions of said casing by a transverse cord member,
a bottom rail,
each of the cords of the pair of first cords, respectively
extending down through aligned openings in either of the end
portions of said slats and having its lower end connected to said
bottom rail, and
an electrical circuit for separately energizing and controlling the
direction of rotation of said first and second motors,
whereby when said first motor is energized, said pair of first
cords is wound on or played out from said pair of first reels to
cause said bottom rail and said plurality of slats to be raised or
lowered, and
whereby when said second motor is energized, said pair of second
cords is wound or played out from said pair of second reels while
said pair of third cords is simultaneously played out or wound on
said pair of third reels to cause said slats to be either tilted to
a closed position or
2. The apparatus in accordance with claim 1;
wherein said electrical circuit includes a control panel provided
with an "up" push button, a "down" push button, a "close" push
button, and an "open" push button,
whereby while said "up" push button is being depressed, said first
motor is rotated in one direction to wind said first pair of cords
about said first pair of reels to raise the blind and while said
"down" push button is being depressed said first motor is rotated
in the opposite direction to unwind said first pair of cords from
said first pair of reels to lower the blind, and
whereby while said "close" push button is being depressed said
second motor is rotated in one direction to wind said second pair
of cords about said second pair of reels and to play out said third
pair of cords from said third pair of reels to close the blind, and
while said "open" push button is being depressed said second motor
is rotated on the opposite direction to play out said second pair
of cords from said second pair of reels and to wind said third pair
of cords about said third pair of reels to open
3. The invention in accordance with claim 1 including;
a pulley mounted on either end of said bottom rail, and
wherein the lower end of one of the cords of the second pair of
cords and the lower end of the other of the cords of the third pair
of cords extending down from each end of the casing are integrally
joined and passed around a respective one of the pulleys on either
end of the bottom
4. The invention in accordance with claim 1
wherein the revolutions per minute of the second motor is on the
order of
5. A Venetian blind provided with an automatic control, the
combination comprising:
a casing,
a plurality of pairs of tilt cords extending down from said
casing,
each of said pairs of tilt cords including a back and front tilt
cord,
a plurality of vertically spaced transverse members connecting the
front and back tilt cords of each pair,
a plurality of horizontally disposed, vertically spaced slats
supported between said back and front tilt cords by said transverse
members,
at least two lift cords, each extending down from said casing
through aligned openings provided in the slats between pairs of
back and front tilt cords,
a bottom rail attached to the lower ends of said lift cord,
a first reversible motor mounted in said casing, said first motor
having a drive shaft,
a first pair of reels on the drive shaft of said first motor,
a first pair of pulley means in said casing for guiding the lift
cords to enable the upper ends thereof to be respectively wound
about said first pair of reels,
a second reversible motor mounted in said casing, said second motor
having a drive shaft,
A first and second set of reels on said drive shaft of said second
motor,
a first set of pulley means in said casing for guiding the front
tilt cords to enable the upper ends thereof to be respectively
wound about the reels of said first set of reels,
a second set of pulley means in said casing for guiding the back
tilt cords to enable the upper ends thereof to be respectively
wound about the reels of said second set of reels in a sense
opposite to the direction in which the front tilt cords is wound on
the reels of said first set of reels, and
control means for individually controlling the energization and the
direction of rotation of said first and second motors.
Description
This invention relates to controls for window blinds and more
particularly to an automatic control for operating a window blind
comprised of a plurality of horizontally disposed slats.
A window blind made of many horizontally disposed slats formed of
wood, aluminum or plastic is commonly known as a ventian blind. In
such blinds the slats are generally hung on tapes in such a manner
that when the blind is lowered and its slats tilted each of the
slats overlaps the next so as to close the blind. The blinds are
conventionally provided with cords hanging from the side of the
window which can be manipulated for raising and lowering the blind
and for tilting its slats to any desired angle so as to regulate
the light, heat or air admitted therethrough.
The principal object of the present invention is to provide a
control means which operates in response to the depressing and
holding down of push buttons on a control panel to automatically
control the raising or lowering of the blind and the opening or
closing of the blind by varying the angle at which the slats are
held.
In accordance with the present invention a cornice bow is provided
for mounting on the top of a window. A blind comprised of a
plurality of horizontally disposed slats is suspended from the
bottom of the cornice box by cords located on either side of the
blind. Mounted within the cornice box is a first motor which drives
a first shaft provided with a first pair of reels. Also mounted
within the cornice box is a slower speed second motor which
simultaneously drives both a second shaft provided with a second
pair of reels and a third shaft provided with a third pair of
reels. A first pair of cords having upper ends wound about the
respective first pair of reels extends down through openings on the
respective sides of the slats with their lower ends attached to a
bottom member of the blind. A second pair of cords having their
upper ends wound in one sense about the respective second pair of
reels extend down along the front of the respective sides of the
slats and about pulleys provided on the sides of the bottom member
and then pass upwardly to form a third pair of cords which extend
up along the back of the respective sides of the slats with their
upper ends wound in the opposite sense about the respective third
pair of reels. A panel located on the side of the window is
provided with an "up" push button, a "down" push button, an "open"
push button and a "close" push button. When the "up" push button is
depressed, a circuit is closed which energizes the first motor in
one direction to gather up the first pair of cords on the
respective first pair of reels to raise the blind and when the
"down" push button is depressed a circuit is closed which energizes
the first motor in the opposite direction to play out the first
pair of cords wound on the respective first pair of reels to lower
the blind. When the "close" push button is depressed the circuit is
closed which energizes the second motor in one direction to play
out the second pair of cords wound on the respective second pair of
reels and to gather in the third pair of cords wound on the
respective third pair of reels so as to cause the slats to be
tilted to a substantially vertical position and thereby close the
blind. When the "open" push button is depressed a circuit is closed
which energizes the second motor in the opposite direction to
gather in the second pair of cords wound on the respective second
pair of reels and to play out the third pair of cords wound on the
respective third pair of reels so as to cause the slats to be
returned to their level or open position.
With these and other objects in view, the invention consists of the
various parts of the device whereby the objects contemplated are
obtained, as herein set forth, pointed out in the appended claims
and illustrated in the accompanying drawings.
IN THE DRAWINGS
FIG. 1 is a perspective view of a blind comprised of a plurality of
horizontally disposed slats being suspended from a cornice box
which encloses the automatic controls of the present invention;
FIG. 2 is a side view of the lower portion of the blind taken along
line 2--2 of FIG. 1 and showing the slats disposed in a level or
open position;
FIG. 3 is a detail view of a pulley enclosed in one end portion of
the bottom frame member of the blind;
FIG. 4 is a view showing a transverse cord connected by its ends to
the front and back tilt cords;
FIG. 5 is a side view of the lower portion of the blind slowing the
slats disposed in a tilted or closed position;
FIG. 6 is a side view of the upper portion of the blind showing the
slats drawn together as a result of the blind being raised;
FIG. 7 is a perspective view of the cornice box with the top and
front walls cut away to show the automatic controls therein;
and
FIG. 8 is an electrical diagram showin the circuit for operating
the motors in response to push buttons to control the operation of
the blind.
Referring to FIG. 1, a cornice box 10 is shown mounted above the
top of a window having a frame 11. A blind 12 comprised of a
plurality of horizontally disposed slats 13 and a horizontally
disposed bottom member or rail 14 is suspended from below the
cornice box 10 by three cords 16a, 17a, and 18a on the left side
thereof and three cords 16b, 17b, and 18b on the right side
thereof. The cords are made of a strong material such as nylon
which can withstand considerable wear.
The center cord 16a on the left side of blind 11 extends down from
the base of the cornice box 10 through enlarged openings 20a on the
left end portions of each of the slats 13 and the lower end thereof
is looped and fastened by a metal clip 21 to an eye hook 22a
provided on the left side of the upper surface of the bottom member
14. The front cord 17a on the left side of the blind 11 extends
down from the base of the cornice box 10 along the front of the
slats 13 and the lower end thereof passes down through an opening
23a in the top of the bottom member 14 around a pulley 25a
supported within the bottom member 14 on the left side thereof and
then passes up through opening 24a to form the back cord 18a which
extends up along the back of the slats 13 into the base of the
cornice box 10.
The center cord 16b on the right side of the blind 11 extends down
from the base of the cornice box 10 through enlarged openings 20b
on the right end portion on each of the slats 13 and the lower end
thereof is looped about and fastened by a metal clip 21 to an eye
hook 22b provided on the right side of the upper surface of the
bottom member 14. The front cord 17b on the right side of the blind
12 extends down from the base of the cornice box 10 along the front
of the slats 13 and the lower end passes down through an opening
23b in the top of the bottom member 14 around a pulley 25b (FIG. 3)
supported within the bottom member 14 on the right side thereof and
then passes up through an opening 24b on the top of member 14 to
form the back cord 18b extending up along the back of the slats 13
into the base of the cornice box 10.
Connected across front cord 17a and back cord 18a on the left side
of the blink 12 at each of a plurality of equally vertically spaced
points along the length thereof is a transverse cord member 27a. As
shown in FIG. 4, the ends of each of the cord members 27a are
looped about points on the respective cords 17a and 18a and secured
in position by use of metal clips 21. In a similar manner,
connected across front cord 17b and back cord 18b on the right side
of the blind 12 at each of a plurality of equally vertically spaced
points along the length thereof is a transverse cord member 27b.
The respective ends of each of the cord members are looped about
the respective cords 17b and 18b and secured in position by the use
of metal clips 21. It should now be clearly understood that the end
portions of each of the slats 13 are supported on correspondingly
leveled transverse cord members 27a and 27b.
Reference will next be made to FIG. 7 which shows a perspective
view of the cornice box 10 with its top 35 and front wall 36
partially cut away to show apparatus included therein for
automatically controlling the operation of the blind 12 in response
to the depressing and holding down of push buttons provided on a
panel 30 located at some convenient location such as the wall on
the side of the window frame 11. The cornice box 10 includes a set
of three pulleys 31a, 32a and 33a mounted therein on the left side
of its base 34 and a set of three pulleys 31b, 32b and 33b mounted
therein on the right side of the base 34.
Secured on the base 34 on the central portion of the cornice box 10
is a chassis 37. A first motor 41 is attached to the chassis 37 by
a bracket 38 provided with screws 39 and a second motor 46 is
attached to the chassis 37 by a bracket 50 provided with screws 51.
A first shaft 42 extending from the right side of the first motor
41 has its outer end supported in a bearing pedestal 43 having a
base attached by screws 45 to the chassis 37. Secured on the first
shaft 42 is a first pair of reels 44a and 44b. A second shaft 47
extending from the left side of the second motor 46 has its outer
end supported in the bearing pedestal 43. Secured on the second
shaft 47 is a second pair of reels 48a and 48b. A third shaft 49
extending from the right side of the second motor 46 has its outer
end supported in a bearing pedestal 54 having a base attached by
screws 54a to the chassis 37. Secured on the third shaft 49 is a
third pair of reels 52a and 52b. In order to reduce the weight of
the apparatus enclosed in the cornice box 10 the motors 41 and 46
are small in size and the parts such as the chassis 37, the shafts
42, 47 and 49 and the bearing pedestals 45 and 54 are made of
aluminum and the reels are made of a plastic material such as
teflon and may be secured to the aluminum shafts by an epoxy
cement.
Extending upwardly through three openings 53a on the left side of
the base 34 of the cornice box 10 are the respective cords 16a, 17a
and 18a. The center cord 16a passes around the pulley 32a on base
34 from which it extends inwardly below the chassis 37 to a pulley
55a on base 34 and then upwardly so that its end can be wound about
the reel 44a on the frist shaft 42. The front cord 17a passes
around the pulley 31a on base 34 from which it extends inwardly
below the chassis 37 to a pulley 57a on base 34 from which it is
directed upwardly so that its end can be wound about the reel 48a
on the second shaft 47. The back cord 18a passes around the pulley
33a on base 34 from which it extends inwardly below the chassis 37
to a pulley 59a on base 34 from which it is directed upwardly so
that its end can be wound about the reel 52a on the third shaft
49.
Likewise, extending upwardly through three openings 53b on the
right side of the base 34 of the cornice box 10 are the respective
ends of the cords 16b, 17b and 18b on the right side of the blind
12. The center cord 16b passes around pulley 32b on base 34 and
extends inwardly below the chassis 37 to a pulley 55b on base 34
from which it is directed upwardly so that its end can be wound
about the reel 44b on the first shaft 42. The front cord 17b passes
around pulley 31b on base 34 and extends inwardly below the chassis
37 to a pulley 57b on base 34 from which it is directed upwardly so
that its end can be wound about the reel 48b on the second shaft
47. The back cord 18b passes around pulley 33b on base 34 and
extends inwardly below the chassis 37 to a pulley 59b on base 34
from which it is directed upwardly so that its end can be wound
about the reel 52b on the third shaft 49.
It should be noted that the first motor 41 and the second motor 46
are of the type that can operate to rotate in either a clockwise or
counterclockwise direction. Furthermore, the second motor 46
operates at a much lower revolution per minute, i.e., on the order
of 1/24 the revolution per minute of the first motor 41.
It should now be clearly understood that the cords 16a and 16b on
the respective sides of the blind 12 have their upper ends wound
about the respective reels 44a and 44b secured on the first shaft
42 so that these cords are taken up when the shaft 42 is rotated in
a clockwise direction as viewed in FIG. 7. Furthermore, the cords
17a and 17b on the respective sides of the front of the blind 12
have their upper ends connected about the respective reels 48a and
48b secured on the second shaft 47 so that these cords are then
taken up when the shaft 47 is rotated in a clockwise direction; and
the cords 18a and 18b on the respective sides of the back of the
blind 12 have their upper ends connected about the respective reels
52a and 52b secured on the third shaft 49 so that these cords are
played out when the shaft 49 is rotated in a clockwise
direction.
An electrical cable 65 connected through the back of the cornice
box 10 has leads connected to each of the motors 41 and 46. The
first motor 41 has a first input lead 61 which, when energized,
provides for rotating its shaft 42 clockwise and a second input
lead 62 which when energized provides for rotating its shaft 42
counterclockwise. Likewise, second motor 46 has a first input lead
63 which, when energized, provides for rotating its shafts 47 and
49 clockwise and a second input lead 64 which, when energized,
provides for rotating its shafts 47 and 49 counterclockwise.
An electrical circuit for controlling the motors 41 and 46 to
thereby control the operation of the blind 12 is shown in FIG. 8.
The circuit includes four switches. These switches are designated
as an "up" switch 66, a "down" switch 67, a "close" switch 68 and
an "open" switch 69. The push buttons for controlling each of these
four switches are provided on panel 30 located on the side of the
window frame 11. Each of the push buttons is provided with a spring
(not shown) which requires that the push button be held down in
order to close the associated switch contacts.
Thus the "up" push putton 71, when depressed, closes the "up"
switch 66 and provides for raising the blind 12. The "down" push
button 72, when depressed, closes the "down" switch 67 and provides
for lowering the blind 12. The "close" push button 73, when
depressed, closes the "close" switch 68 and provides for tilting
each of the slats 13 to any desired angle so as to partly or
completely close the blind; and the "open" push button 74, when
depressed, closes the "open" switch 69 and provides for leveling
each of the slats 13 to a horizontal position, that is, a position
parallel to the floor so as to provide for maximum opening of the
blind 12 to light, air or heat.
As shown in FIG. 8, an AC power source (not shown) is coupled by a
transformer 56 across the lines 58 and 60 which are illustrated as
extending vertically on the left and right sides of the diagram. A
fuse 56a is provided in the line 58. Connected across the vertical
lines 58 and 60 are the parallel current paths of the control
circuit. The current paths 75 and 76 are connected to line 58 by
the "up" switch 67, respectively. The switches 66 and 67 are of the
type that are mechanically interconnected in that when the "up"
push button 71, for example, is depressed a switch contact 70 in
the current path 76 is open to assure that the current path 76 is
open even though the push button 72 may be simultaneously
depressed. The switches 68 and 69 are similarly mechanically
interconnected. Thus, as shown, when the "up" switch 66 is closed
the current path 75 leading to input lead 61 is closed which
results in energizing the first motor 41 to rotate in a clockwise
direction. It should now be clear that as long as the "up" button
71 is depressed the motor 41 rotates shaft 42 in a closewise
direction and the pair of reels 44a and 44b take up the cords 16a
and 16b and the blind 12 continues to be raised. When the raising
of the bottom member 14 causes the uppermost slat 13 of the blind
12 to reach a level near the base of the cornice box 14, an arm 77
of an over travel limit switch 78 (FIG. 6) is actuated to
disconnect the power across the current path 75 and stop the first
motor 41 from being operated even through the "up" push button 71
is still depressed.
In order to lower the blind 12 the "down" push button 72 is
depressed which closes the "down" switch 67 located in current path
76 connected to input lead 62 of motor 41. As a result of this
action the first motor 41 is energized to rotate in a
counterclockwise direction. It should now be clear that as long as
the "down" push button 72 is depressed the motor 41 rotates the
first shaft 42 in a counterclockwise direction and the pair of
reels 44a and 44b play out the cords 16a and 16b and the blind 12
continues to be lowered.
Next to be described is the electrical circuit provided for opening
and closing the blind 12, that is, leveling or tilting the slats 13
to vary the amount of light, air or heat passing therethrough. FIG.
1 shows the blind 12 in its lowered position with the horizontal
slats in their level or open position. If it is desired to close
the blind 12, that is, to tilt the respective slats 13 so that they
are held in an inclined position by their supporting transverse
members 27a and 27b, the "close" push button 73 is depressed. As a
result of depressing and holding down the "close" push button 73,
the "close" switch 68 located in current path 79 connected to input
lead 63 of motor 46 is closed and the second motor 46 is energized
to slowly rotate in a clockwise direction. As a result, the pair of
cords 17a and 17b are taken up on the reels 48a and 48b and the
pair of cords 18a and 18b are played out from the reels 52a and 52b
which result in the front of the slats 13 being slowly tilted
upwardly and the back being tilted at the same rate downwardly, as
shown in FIG. 5, so as to close the blind 12. When the slats 13
have been tilted to provide the desired closing of the blind 12,
releasing the "close" push button 73 stops the clockwise rotation
of the second motor 46 and the blind 12 stays in the desired closed
position.
In order to again open the blind 12, the "open" push button 74 is
depressed which closes the "open" switch 69 located in the current
path 80 connected to input lead 64 of motor 46. As a result of
holding the "open" push button 74 down the second motor 46
continues to be energized to slowly rotate in the counter clockwise
direction causing the shaft 47 and therefore the reels 48a and 48b
secured thereon to rotate and slowly play out the pair of cords 17a
and 17b connected to the front of the slats 13 and causing the
shaft 49 and therefore the reels 52a and 52b secured thereon to
rotate and slowly take up the pair of cords 18a and 18b connected
to the back of the slats 13. When he slats 13 have reached a level
position at which the blind 12 is opened the desired amount,
releasing the "open" push button 74 stops the motor 46 and the
slats stay at that position.
It should be noted that by having the integrally joined lower
portion of cords 17a and 18a looped around the pulley 25a mounted
on one end of the bottom member 14 and by having the integrally
joined lower portion of cords 17b and 18b looped around the pulley
25b mounted on the other end of the bottom member 14 (FIG. 5), the
bottom member 14 remains horizontally disposed while the slats 13
are tilted by the taking up of the front cords 17a and 17b and the
simultaneous playing out of the back cords 18a and 18b, or vice
versa.
It should be further noted that the vertical spacing of the
transverse cord members 27a and 27b on the respective sides of the
blind 12 may be closer together so that a lesser amount of the
intervening vertical length of the cord 17a, 18a and 17b, 18b will
be gathered up when the blind 12 is raised, as illustrated in FIG.
6.
While the preferred embodiments of the invention have been shown
and described it should be understood that the present invention
should not be limited thereto but that the invention is intended to
embrace all embodiments coming within the scope of the claims which
follow.
* * * * *