JPH08165870A - Partially openable blind - Google Patents

Abstract

PURPOSE: To separately open or close the upper and lower slat sets by dividing the slats of a Venetian blind into the upper and lower sets, and rotating the gears fixed to individual shafts with two gears coupled at the upper section of an opening/closing pole. CONSTITUTION: Slats of a Venetian blind are divided into the upper and lower slat sets, dedicated shafts 21, 22 coupled with ladder cord drums are rotated, and the upper and lower slat sets can be independently opened or closed by separate ladder cord pairs. End sections of the dedicated shafts 21, 22 are guided into a gear box 26 provided at one end of a head box, and the dedicated shafts 21, 22 are rotated by worm gears 28, 29 rotatably coupled with the small- diameter section 42 at the upper section of an opening/closing pole 40 via gears 48, 49. The worm gears 28, 29 are provided with pin grooves 41, 41 on opposite faces and are fitted at the prescribed interval, and a compression spring 44 is inserted between the rear end face of the worm gear 29 and the front end face of the opening/closing pole 40. The opening/closing pole 40 is kept as it is, or it is pushed up to insert a pin 43 into a pin groove 41, one of the worm gears 28, 29 is selectively rotated, and the dedicated shafts 21, 22 are independently operated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blind which can open and close each set of slats divided in the vertical direction and which can be opened and closed individually by a single open / close pole.

[0002]

2. Description of the Related Art An existing Venetian blind 1 as shown in FIG. 1 is usually provided with a head box 2 fixed to an upper frame of a window, and a large number of slats 3 are vertically juxtaposed from the box and the lower end thereof is arranged. Attach the bottom rail 4 to.
The bottom rail 4 is held horizontally by a pair of elevating cords 5, and each slat is sandwiched by two weft threads (not shown) between the ladder cord pairs 6 and 6 to maintain an equal interval.
The Venetian blind 1 is more commonly used in offices and homes because it is easier to open and close the attached window than a cloth curtain.

In the blind 1, the ladder cord pair 6 is wound around the shaft 7 in the box 2, and the opening / closing pole 8 located on the lateral side of the blind is turned to operate the ladder cord pair 6 in the vertical direction via the shaft 7. All the slats 3 rotate at the same time to open and close the entire blind 1, and it is impossible to partially open and close a large number of slats 3, but in reality it is possible to partially open and close the blinds. Often needed. For example, if a window with blinds is located on the side of a road with a large amount of traffic, if this window is close to the window of the next house, or if a skyscraper is nearby and you can look into the room through the window, It is preferable that the blind 1 can be partially opened and closed when the lighting is performed simultaneously.

[0004]

The Venetian blind which can be partially opened and closed has already been disclosed in Japanese Utility Model Laid-Open No. 55-116.
No. 194 has been submitted. In this blind, a gripping member is attached in the middle of the vertical portion of the ladder cord, and the lower ladder cord is partially lifted from each gripping member to open or close only the lower slat set. This blind is very inconvenient because it is necessary to operate all the gripping members one by one when the slat is partially opened and closed, and the gripping members interfere with the lifting operation when pulling up all the slats, which makes practical use impossible. .

As an improvement of the above-mentioned partially opened / closed blind, Japanese Utility Model Laid-Open No. 6-71888 has been proposed. This blind attaches another cord for partially lifting the ladder cord and guides the cord along the guide to the side of the brand. This blind is aesthetically unfavorable because the lifting cord may sag out of the guide when all the slats are pulled up, and the lifting cord is complicatedly arranged.

The present invention was separately invented irrespective of the above-mentioned known blind, and is a further improvement of Japanese Patent Application No. 5-73416 filed by the present inventor. Therefore, it is an object of the present invention to provide a partially openable / closable blind in which the opening / closing of each slat group can be easily operated by one opening / closing pole. Another object of the present invention is to provide a blind in which opening and closing operations of the middle and lower slats do not affect the upper slats.

[0007]

In order to achieve the above object, the blind 10 according to the present invention divides the juxtaposed slats in the vertical direction as shown in FIG. Ladder code pair 13,14
It is a Venetian blind that opens and closes independently. In FIG. 2, the code pairs 13 and 14 are shown in a shifted manner, but in practice, they are usually arranged in a straight line.
Long slats made of plastic or metal sheet 1
Generally, one set is divided into two sets (see FIG. 2) above and below, but it is also possible to divide into three sets (see FIG. 8) or four or more sets.

As is clear from FIGS. 4 (1) and 4 (2), the rudder cord pairs 13, 13 which are abrasion-resistant cords,
Extending vertically downwardly from the upper shaft 21 along the outer edges of the slats of the upper set of slats 11, each slat is supported horizontally by a pair of cords 13,13. On the other hand, the ladder cord pairs 14 and 14 for opening and closing the lower slat set 12 are
The lower shaft 22 passes downward through a through hole 16 for the lifting cord 15 in the upper slat set 11, and then extends vertically along the outer slat edge of the lower slat set 12. Such a structure is the same when all the slats are divided into three or more sets, but when the slats are very long, it is preferable to provide a through hole only for the ladder cord pair 14 in the center of the slats. The ladder cord pairs 13 and 14 are exclusive shafts 21 and 2 horizontally arranged in the head box 20.
It is operated individually by the rotation of 2. As shown in FIG. 8, three or more such shafts may be arranged vertically, and one opening / closing pole 27 for rotating these shafts is arranged vertically on the lateral side of the blind 10. .

As shown in FIG. 3, the upper slats 11
In the lowermost slat 11a, the slat retainer 17 is installed at a position corresponding to the through hole 16 for the lifting cord. For this reason, the slat presser 17 has a vertical width corresponding to the lateral width of the slat 11a, and is engaged with the slat 11a by a plurality of hook portions 23 formed at the front and rear thereof, and a long hole 24 is provided at the center of the slat presser. . The cord ring 18 is arranged in the long hole 24 of the slat retainer 17 and is rotatable in response to the lifting and lowering of the ladder cord pairs 14 and 14 when the lower slat set 12 is opened and closed (see FIG. 6). For the slats 11a, it is preferable that two or three normal slats are used in order to give a certain amount of weight, or thick slats are used, and the slats 17 are made of metal.

As illustrated in FIG. 7, the exclusive shaft 2
In order to selectively rotate the gears 1 and 22, the worm gears 28 and 2 above the opening / closing pole 27 in the gear box 26.
9 is rotatably fitted, and the worm gear is engaged with a wheel (not shown) having a shaft fixed thereto. Although not shown, if you attach this gearbox to the left and right sides of the blind respectively and control the rotation of the four shafts,
It is possible to divide the opening and closing of the blind into four parts.
In addition, as shown in FIG.
The shaft of the book may be selectively rotated.

[0011]

In the blind 10 of the present invention, the worm gear 2 in the gear box 26 can be provided by directly or simply pushing up one opening / closing pole 27 located on the lateral side of the blind.
Either 8 or 29 can be selected. And open / close pole 2
When 7 is rotated, shaft 21 or 22 can be independently rotated,
The slats 11 and 12 divided in the vertical direction can be easily opened and closed individually. Since the blind 10 uses the combination of the worm gear 28 or 29 and the wheel, even if the opening / closing pole 27 is free, the shafts 21 and 22 are rotated by the weights of the slat sets 11 and 12 and the bottom rail. It doesn't happen.

If the upper slat set 11 is opened in the horizontal position, the ladder cord pair 14 is the lowermost slat 11a.
Since it passes through the cord ring 18 at, the upper slat set 11 is not affected when the lower slat set 12 is opened and closed. As shown in FIGS. 5 and 6, even when the upper slat set 11 is closed, the lower slat set 12 can be freely opened and closed by the ladder cord pair 14. Therefore, the upper slat set 11 does not interfere with the vertical movement of the ladder cord pair 14 that opens and closes the lower slat set 12.

[0013]

EXAMPLES Next, the present invention will be described based on examples. FIG. 2 shows a blind 10 of the present invention. The blind 10 is usually a head box 2 fixed to an upper frame (not shown) of a window by two brackets 30 (see FIG. 1).
Equipped with 0. The slender slats 11 and 12 made of plastic are vertically juxtaposed downward from the box 20. A relatively heavy bottom rail 31 is arranged at the lower end of the slats 11 and 12, and the bottom rail 31 is provided with two lifting cords 15 and 1.
Hold horizontally at 5 (Figure 3).

The lifting cords 15, 1 shown in FIGS. 3 and 4
5 is fixed to the upper end surface of the bottom rail 31 at a predetermined interval, vertically extends upward in the through holes 16 of all the slat sets 11 and 12, and horizontally passes through the head box 20.
The raising and lowering cords 15 and 15 are gathered into one when exiting downward from the head box 20, and the blind 10 can be raised and lowered only by pulling an operation cord (not shown, see FIG. 34 in FIG. 1) on the side of the blind.

In the head box 20, exclusive shafts 21 and 22 are arranged in parallel in the vertical direction, and the shaft 2
Cord drums (not shown) having the same diameter are fitted and fixed to the Nos. 1 and 22 at the same position in the vertical direction. A pair of ladder cords 13 and 13 for opening and closing 11 pairs of upper slats are wound around the drum of the shaft 21 and a pair of ladder cords 14 and 14 for opening and closing the lower pair of slats 12 are wound around the drum of the shaft 22. The pair of ladder cords 13 and 13 wound around the upper drum are contact prevention pins (not shown).
Therefore, the rudder cord pair 14 wound around the lower drum does not come into contact with the rudder cord pair 14, 14. By winding both upper ends of each pair of ladder cords around the drums of the shafts 21 and 22 in opposite directions, when the shafts are rotated, one of the ladder cords is raised and at the same time, the other is lowered to open and close the slats. A gear box 26 (FIG. 7) is attached to the right side of the head box 20, and one opening / closing pole 27 is vertically provided from the gear box.

Ladder cord pair 1 which is a wear resistant string
Usually, 3 and 14 are arranged in two sets at substantially equal intervals in the longitudinal direction of each slat set 11 and 12, and in the case of a long slat, 3 sets are arranged.
More than one set may be arranged. Generally, two sets of weft yarns (not shown) are connected to the ladder cord pair 13 and 14 at equal intervals so that the slats having the same weft width and length are supported in parallel with each other. As shown in FIGS. 3 and 4, the rudder cord pairs 13 and 13 have the upper shaft 21.
Extends vertically downward along the slat outer edge of the upper slat set 11. On the other hand, the ladder cord pairs 14 and 14 for opening and closing the lower slat set 12 pass downward from the lower shaft 22 through the through hole 16 for the lifting cord 15 of the upper slat set 11, and the cord of the slat presser 17 at the lowermost slat 11a. It extends vertically through the ring 18 along the outer edges of the slats of the lower slat set 12.

In the upper slat set 11, the lowermost slat 11a is formed by stacking two or three normal slats or using thick slats (see FIG. 6), and as shown in FIG. A metal slat holder 17 is installed at a position corresponding to the hole 16. The rectangular flat slat retainer 17 has a vertical width corresponding to the horizontal width of the slat 11a, and four hook portions 23 formed before and after the vertical width.
The slat 11a is engaged with the slat 11a, and a long hole 24 approximately equal to the through hole for the lifting cord is provided at the center of the slat holder.

The cord ring 18 is a slat holder 1
7 are arranged in the long hole 24, the shaft portions 25, 25 are projected from both sides of the ring, both shaft portions 25 are fitted in the grooves 35 on the upper wall surface of the slat retainer 17 and are rotatably supported by the claws 36. To do. At the time of assembling the blind 10, the cords 14, 14, 15 are put in the ring 18 in advance, then these cords are passed through the lateral slits 37 to attach the slat presser 17 to the lowermost slat 11a, and the ladder is pressed by the slat presser. The lower ends of the cord pairs 13, 13 are fixed.

As shown in FIG. 7, while the end portions of the shafts 21 and 22 enter the gear box 26,
A pole upper portion 40 that is connected to the opening / closing pole 27 by a pin or a joint is vertically and rotatably attached. On the upper and lower walls of the gear box 26, the worm gear 2 is coaxially arranged in the vertical direction.
The worm gears 8 and 29 are rotatably mounted, and the front end faces of both worm gears are provided with pin grooves 41 at predetermined intervals. The worm gears 28 and 29 have a central hole 39, and the small diameter portion 42 of the pole upper portion 40 is fitted into the central hole 39. A pin 43 is diametrically projected between the small diameter portion 42 and the worm gears 28, 29, and a compression spring 44 is fitted between the rear end surface of the lower worm gear 29 and the front end surface of the pole upper portion 40. . On the other hand, the intermediate shafts 46, 47
Is rotatably supported by both side walls of the gear box 26, and has a wheel (not shown) and a spur gear 48 fixedly engaged with the worm gear 28 or 29, respectively. The intermediate shafts 46, 47 are transmitted to the shafts 21, 22 by spur gears 48, 49. Although not shown, it is easy to mount the gear boxes 26 on the left and right sides of the blind to control the rotation of the four shafts and to open and close the blind in four parts.

In the blind 10, the one opening / closing pole 27 is rotated as it is or while being pushed up, so that the shafts 21 and 22 are independently rotated to allow the slat assembly 1 to rotate.
1, 12 can be opened and closed individually. At this time, if the upper slat set 11 is opened at the horizontal position, the ladder cord pairs 14, 14 pass through the cord ring 18 at the lowermost slat 11a, so that the opening and closing operation of the lower slat set 12 is performed. Does not affect 11. As shown in FIGS. 5 and 6, even when the upper slat set 11 is closed, the lower slat set 12 can be freely opened and closed by allowing the ladder cord pairs 14 and 14 to pass by inclining the ring 18. In FIG. 6, the inclination of the lowermost slat 11a is slightly returned, but if the lowermost slat 11a is made heavy, the inclination does not return, and the upper slat set 11 opens and closes the lower slat set 12 and the vertical operation of the ladder cord pair 14 is performed. Do not interfere with.

Referring to FIG. 7, if the opening / closing pole 27 is not pushed up, the pole upper portion 40 is moved by the spring 44.
Occupies the position indicated by the solid line, and the pin 43 at the upper portion thereof enters the pin groove 41 of the lower worm gear 29. As a result,
When the open / close pole 27 is rotated as it is, the lower worm gear 29 rotates to rotate the wheel of the intermediate shaft 47, and the lower shaft 22 is rotated through the intermediate shaft to open / close the lower slat set 12. On the other hand, when the opening / closing pole 27 is pushed up, the pole upper part 40 is moved to the spring 44.
Rises against the elasticity of the
Enters the pin groove 41 of the upper worm gear 28. As a result, when the open / close pole 27 is pushed up to rotate on its axis, the upper worm gear 28 rotates to rotate the wheel of the intermediate shaft 46, and the upper shaft 21 rotates via the intermediate shaft to open / close the upper slat set 11. To do.

FIG. 8 shows a modified example of the present invention in which three exclusive shafts 50 to 52 are arranged in parallel and horizontally in the vertical direction in the head box. Upper shaft 50
There is a pair of ladder cords 56 for opening and closing the upper slats 53.
A ladder cord pair 57 for opening and closing the intermediate slat set 54 is wound around the intermediate shaft 51, and a ladder cord pair 58 for opening and closing the lower slat set 55 is wound around the lower shaft 52. Ladder cord pairs 56-58, which are abrasion resistant strings,
Since the slats are relatively long, three sets are arranged at substantially equal intervals in the longitudinal direction, and there is no lifting cord in the slat through hole for the intermediate ladder cord pair.

In the upper and middle slat sets 53, 54, the lowermost slat 53a, 54a is formed by stacking two or three normal slats or using thick slats and further installing a metal slat retainer 60. . The shape of the slat retainer 60 may be substantially the same as the above.
One open / close pole 62 for rotating the shafts 50 to 52
Is vertically arranged on the right side of the blind 63, and the opening / closing pole is rotated as it is while being pushed up or pulled down, so that the shafts 50 to 52 are independently rotated in each case, and the slats 53 to 55 are divided in the vertical direction. Open and close individually.

FIG. 9 shows the gear box 70 installed on the right side of the blind 63 in FIG. Gear box 70
An end portion of the shafts 50 to 52 is inserted therein, and a pole upper portion 71 connected to the opening / closing pole 62 is vertically and rotatably attached. Worm gears 72, 73 and a worm gear 74 (shown in cross section) are rotatably mounted coaxially in the vertical direction on the upper and lower walls of the gear box 70. The front end surfaces of the worm gears 72 and 73 form a crown gear-shaped protrusion 75, and a spline portion 76 is formed on the inner peripheral wall of the worm gear 74. Worm gear 72-7
4 has a center hole, and the small diameter portion 77 of the pole upper portion 71 is fitted into the center hole. To the small-diameter portion 77, a disc 80 having a crown gear-shaped end face is fixed to the middle of the worm gears 72 and 74 and the middle of the worm gears 73 and 74, respectively.
6. A spline portion 81 that meshes with 6 is formed on the peripheral wall. In the small diameter portion 77, a compression spring 82 is fitted between the rear end surface of the lower worm gear 73 and the front end surface of the pole upper portion 71, and further inside the upper gear 72, the front inner portion and the small diameter portion 77.
The compression spring 83 is housed between the large-diameter portion and the tip. on the other hand,
The intermediate shafts 85 to 87 are rotatably supported by both side walls of the gear box 70, and the worm gears 72 to 74, respectively.
A meshing wheel (not shown) and a spur gear 88 are fixed. The intermediate shafts 85 to 87 include the spur gears 88,
It is transmitted to the shafts 50 to 52 by 89.

Referring to FIG. 9, unless the opening / closing pole 62 is pushed up or pulled down, the pole upper portion 71 occupies the position shown by the solid line in FIG. 9 by the springs 82 and 83. In the upper part 71 of the pole, the disks 80, 80 are free,
The spline portion 81 meshes with the spline portion 76 in the intermediate worm gear 74. As a result, when the open / close pole 62 rotates as it is, only the intermediate worm gear 74 rotates, and the intermediate shaft 51 is rotated via the intermediate shaft 86 to open / close the intermediate slat set 54. When the open / close pole 62 is pushed up, the pole upper portion 71 rises against the elasticity of the spring 82, the upper disk 80 meshes with the protrusion 75 of the upper worm gear 72, and the spline portion 8
1 is disengaged from the spline portion 76. As a result, when the open / close pole 62 is pushed up to rotate on its own axis, the upper worm gear 72
The upper slat assembly 53 is opened and closed by rotating only the upper shaft 50 and rotating the upper shaft 50. On the other hand, when the opening / closing pole 62 is pulled down, the pole upper portion 71 moves down against the elastic force of the spring 83, and the lower disk 80 moves downward.
The spline portion 81 is disengaged from the spline portion 76 while being engaged with the protrusion 75 of No. 3. As a result, opening and closing pole 6
When 2 is pulled down and rotated, only the upper worm gear 73 rotates to rotate the lower shaft 52, thereby opening and closing the lower slat set 55. When the open / close pole 62 is partially pushed up or pulled down, the worm gear 72
It is also possible to configure and 74 or 73 and 74 to rotate simultaneously.

[0026]

The blind according to the present invention is capable of individually opening and closing two or three or more slat groups divided in the vertical direction by rotating one open / close pole located on the lateral side of the blind. Not only is it easier to use than before, but it is also aesthetically pleasing. This blind can select an exclusive slit to be rotated only by pushing up or pulling down the opening / closing pole, so that the slat group to be opened / closed can be easily operated and always used in consideration of suitable lighting and ventilation.

In the blind of the present invention, the window to which the blind is attached is located on the side of a road with a large amount of traffic, or even if this window is close to the window of the next house or a skyscraper is close, Even if there is a risk of being removed, blinding as well as daylighting and ventilation can be achieved at the same time by a simple operation of the opening / closing pole as desired. If the blind can be partially opened and closed as in the present invention, it can be sufficiently used not only for windows of buildings and homes but also as a room partition and a substitute for a door, which is impossible with conventional blinds.

[Brief description of drawings]

FIG. 1 is a perspective view showing an existing blind with a part thereof omitted.

FIG. 2 is a schematic sectional view showing the blind according to the present invention from the front.

FIG. 3 is a plan view showing a slat retainer used in the present invention.

FIG. 4 (1) is a horizontal sectional view of the upper slat set, and (2) is a horizontal sectional view of the lower slat set.

FIG. 5 is a schematic side view showing a partially opened / closed state of the blind of the present invention.

FIG. 6 is an enlarged vertical sectional view showing the lowermost slat of the upper slat set in FIG.

FIG. 7 is an enlarged vertical sectional view showing a gear box used in the present invention.

FIG. 8 is a schematic cross-sectional view showing a modified example of the blind.

FIG. 9 is an enlarged vertical sectional view showing a modified example of the gear box.

[Explanation of symbols]

 10 Blind 11,12 Slat Set 11a Lowermost End Slat 13,14 Ladder Cord Pair 15 Lifting Cord 16 Through Hole 17 Slat Presser 18 Cord Ring 20 Headbox 21,22 Exclusive Shaft 26 Gearbox 27 Opening Pole 28,29 Worm Gear

Claims (4)

[Claims] 1. A head box in which two or more shafts are horizontally arranged, a ladder cord pair for opening and closing each slat set is wound around each shaft, and one shaft for individually opening and closing each slat set is provided. Is a Venetian blind in which the open / close pole is vertically arranged on the lateral side of the blind, and a large number of slats are vertically divided into two or more sets, and the worm gear fitted above the open / close pole is fixed to the shaft. Mesh with the wheel,
A blind that can be partially opened and closed to selectively rotate each shaft. 2. A head box in which two or more shafts are horizontally arranged, a ladder cord pair for opening and closing each slat set is wound around each shaft, and one shaft for individually opening and closing each slat set is provided. Is a Venetian blind in which the opening / closing poles of the above are vertically arranged on the lateral side of the blind. A blind that can be partially opened and closed while passing through the through-hole for the lifting cord and engaging a worm gear fitted above the opening and closing pole directly or indirectly with a wheel with a fixed shaft. 3. A Venetian blind in which two shafts are horizontally and vertically arranged in a head box, and a pair of ladder cords for opening and closing each slat set is wound around each shaft, and a predetermined number is provided above the opening / closing pole. Two worm gears are fitted at intervals, and pins or other latch members are fixed to the open / close pole,
The pin or other retaining member is normally locked to one worm gear, and is locked to the other worm gear when the open / close pole is moved upward or downward, and each worm gear has a shaft fixed wheel via an intermediate wheel. Blinds that can be opened and closed to engage with each other. 4. A Venetian blind in which three shafts are arranged horizontally and vertically in a head box, and a pair of ladder cords for opening and closing each slat set is wound around each shaft, and a predetermined number is provided above the opening / closing pole. Three worm gears are fitted at intervals, and pins or other latch members are fixed to the open / close pole,
Normally, the open / close pole rotates the intermediate worm gear, and when the open / close pole is moved upward or downward, the pin or other latching member is locked to the upward or downward worm gear, and each worm gear is connected to the shaft via the intermediate wheel. A blind that can be partially opened and closed to engage a fixed wheel.