JP2001173341A - Blind device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blind device capable of eliminating obtrusive overlapped slats when an opening is fully opened, enjoying an original sense of liberation, at the same time, having a simple structure excellent in safety, decreasing trouble or the like and being operated as a compact tilting mechanism. SOLUTION: The blind device 1 includes a blind 5 consisting of a large number of slats 4 arranged in parallel in the vertical direction between jambs 2 and 3, expansible link mechanisms 7 and 8 bearing the ends of the slats 4 and arranged to the jambs 2 and 3, a link lifting mechanism 11 lifting the upper ends of link mechanisms 7 and 8 connecting the lower ends to the jambs 2 and 3 through elastic mechanisms 9 and 10 and placing the blind 5 to an opening shutting position and tilt mechanisms 12 and 13 tilting the slats 4 through the link mechanisms 7 and 8 at the opening shutting position of the blind 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blind device which is disposed on a window or the like of a building and, if necessary, blinds the window or the like.

[0002]

In this type of blind apparatus, usually, a blind composed of a number of slats juxtaposed in the vertical direction is arranged above, and the blind is lowered from above by the operation of an elevator. The opening of the window or the like is blindfolded, and the blind is raised by the reverse operation of the lifting device to open the opening.

[0003] In such a blind device, when the opening is opened, a large number of slats constituting the blind are arranged above the opening, usually in a state of being densely overlapped with each other. The opening part is partially closed by the provided slat, and when the opening part is fully opened, a sufficient feeling of release cannot be enjoyed, which is annoying. Even if the slat housing frame is provided above in order to eliminate this, an occupied space for the slat housing frame is required above, and this may be difficult in a general house or the like, and is not always satisfactory. Further, in the conventional blind device, the slat must be cleaned using a ladder, a table, or the like, and in addition, there is a risk that an object or a person is pinched by the lowering of the blind in the closing operation.

In addition, in general, a blind mechanism is provided with a tilting mechanism (tilt mechanism) for tilting the slat immediately before the opening is fully closed, in addition to the lifting / lowering device. In order to tilt the slat by pulling down or pushing down the lowermost part of the blind, an endless chain or a no-back chain must be used, and the tilting mechanism and the elevating device become complicated, expensive, and cause troubles. In addition, there is a possibility that it occupies a large space and the area around the opening cannot be made compact.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to eliminate an unsightly polymerized slat at the time of full opening of an opening and to have an original feeling of liberation. It is another object of the present invention to provide a blind device which has a simple structure, has a simple structure, is excellent in safety, can reduce failures, and can be a compact tilting mechanism.

[0006]

According to a first aspect of the present invention, there is provided a blind device comprising a plurality of slats vertically arranged side by side between a pair of vertical frames, and supporting each end of the slat. A link lifting mechanism arranged on the vertical frame, a link lifting mechanism for raising the upper end of the link mechanism having a lower end connected to the vertical frame, and disposing the blind at the opening closed position, and a place for the blind. A tilt mechanism for tilting each of the slats via the link mechanism at the given opening closed position, wherein the blind mechanism includes a first link row and the first link. A second link row provided in parallel with the row, a third link row having one end connected to the first link row and the other end connected to the second link row, and each of the slats The end of the third link It is connected to, the tilt mechanism,
A rotatable tilt arm in which one end is rotatably connected to the upper end of the first link row and the other end is rotatably connected to the upper end of the second link row. A cam mechanism to be set, the link lifting mechanism lifts the upper end of the link mechanism via a tilt arm, and the cam mechanism includes a cam attached to an intermediate portion of the tilt arm, A guide surface is provided on inner walls of the pair of vertical frames facing each other, and guides the movement of the cam when lifting the upper end of the link mechanism.

[0007] According to the blind device of the first aspect, since the blind composed of a number of slats is lifted by the link lifting mechanism so as to completely cover the opening, the blind is opened when the opening is fully opened. In addition to being able to eliminate the unsightly polymerized slats, the original feeling of release can be enjoyed, and the simple structure, excellent safety, less failures, etc. Are provided on the inner side walls facing each other of the vertical frame, a compact tilt mechanism can be obtained.

In the blind apparatus according to the second aspect of the present invention, in the blind apparatus according to the first aspect, the cam comprises a roller rotatably mounted on an intermediate portion of the tilt arm.

According to the blind device of the second aspect, since the cam is formed of a roller, the tilt operation can be performed smoothly.

[0010] In the blind device according to a third aspect of the present invention, in the blind device according to the first or second aspect, the guide surface is continuous with the linear guide surface extending in the vertical direction. And a cross guide surface extending in a direction intersecting the direction in which the linear guide surface extends.

According to the blind device of the third aspect, since the guide surfaces are provided with the linear guide surface and the cross guide surface which are continuous with each other, the tilt operation can be continuously and smoothly performed.

[0012] In the blind device according to a fourth aspect of the present invention, in the blind device according to the third aspect, the end of the uppermost slat is supported by a tilt arm via a fixture, and the uppermost slat is provided. Each end of the other slats except for is supported by a link mechanism via a respective mounting tool, and the inner walls facing each other of the pair of vertical frames have
Each fitting is penetrated, and a straight slit extending in the vertical direction is formed so as to allow vertical movement of each fitting, the straight guide surface defines a straight slit, and the intersection guide surface is The cross slit is continuous with the straight slit and extends to intersect with the direction in which the straight slit extends.

According to the blind device of the fourth aspect, since the linear guide surface defines the linear slit through which each fixture passes, there is no need to separately provide projections, slits, and the like for the linear guide surface. Thus, a simpler structure and a compact tilt mechanism can be obtained.

In a preferred embodiment, the link lifting mechanism includes a rotating body, a flexible elongated body engaged with the rotating body, and a feeding end connected to an upper end of the link mechanism via a tilt mechanism; An automatic or manual rotary drive for rotating the body. Belts, as a flexible long body,
A wire rope, a chain, a string or the like can be shown as a preferable example, and as a rotating body, when a belt, a wire rope or a string is used as a flexible long body,
A pulley on which these are wound and engaged is preferably used. When a chain is used as a long body, a sprocket wheel which meshes with and engages with the chain is preferably used.

When the lower end of the link mechanism, that is, the lower end of the first link row in the above example, is connected to the vertical frame via the elastic mechanism so as to be movable under elastic bias, the link mechanism has expanded to the maximum. Even if the link lifting mechanism is operated for a while after that, excessive force that damages the first link row is not applied to the lower end of the first link row, and the stop of the link lifting mechanism of the link lifting mechanism is stopped so much. There is no need to set it correctly.

Next, the present invention and its embodiments will be described in more detail with reference to preferred examples shown in the drawings. Note that the present invention is not limited to these examples.

[0017]

1 to 4, a blind device 1 of the present embodiment includes a blind 5 composed of a number of slats 4 vertically arranged between a pair of vertical frames 2 and 3; And extendable link mechanisms 7 and 8 disposed on the vertical frames 2 and 3, respectively.
A link lifting mechanism 11 for lifting the upper ends of link mechanisms 7 and 8 whose lower ends are connected to the vertical frames 2 and 3 via elastic mechanisms 9 and 10 and disposing the blind 5 at the opening closing position.
And tilt mechanisms 12 and 13 for tilting each of the slats 4 via link mechanisms 7 and 8 at a given opening closing position of the blind 5.

Since the vertical frame 2, the vertical frame 3, the link mechanism 7, the link mechanism 8, the elastic mechanism 9, the elastic mechanism 10, and the tilt mechanisms 12 and 13 are configured similarly to each other, The vertical frame 2 will be mainly described, and the vertical frame 3 will be described as necessary.

The vertical frames 2 and 3 are bridged by the upper frame 15 to form an opening 16 which is opened and closed by the blind 5. The vertical frame 2 has a straight slit 17 extending therethrough in a vertical direction so as to allow the attachment 33 to be described later to penetrate and allow the attachment 33 to move up and down, and a vertical frame main body 18 containing the link mechanism 7 therein. , Inside the roller guideway 19
And a pair of guide walls 20 formed integrally with the vertical frame main body 18. Inner wall 21 of vertical frame body 18
Is formed with a linear slit 17, and the inner wall 21 is
It faces the inner wall 14 of the vertical frame 3.

Each of the slats 4 has a large gutter-like portion 22 exposed to the outside when the opening 16 is closed, and a small gutter-like portion superposed on the underline of the large gutter 22 when the opening 16 is closed. And a seal 23 fitted on one end of the large gutter-shaped part 22.

The link mechanism 7 includes a first link row 27 in which a number of link members 25 are rotatably connected in series via a shaft pin 26, and a plurality of link members 28 in the same manner as the link row 27. Are rotatably connected in series via a shaft pin 29 to each other, and a second link row 30 arranged in parallel with the link row 27, and one end of the link row 27 via the other shaft pin 26, The other end includes a third link row 32 composed of a number of horizontal link members 31 rotatably connected to link rows 30 via every other shaft pin 29. Each end 6 of the slats 4 except for the above is fixedly connected to the link member 31 of the link row 32 by a fixture 33 passing through the linear slit 17.
In order to define the folding direction of the link rows 27 and 30, the link members 25 and 28 are integrally provided with blocking pieces 34.

In this example, the lower end 41 of the lowermost link member 28, which is the lower end of the link row 30, is a free end.
The lower end 42 of the lowermost link member 25 which is the lower end of the link row 27 is connected to the vertical frame 2 via the elastic mechanism 9.

The elastic mechanism 9 includes a bracket 51 fixed to the lower end of the vertical frame 2, a guide rod 52 attached to the bracket 51, a movable body 53 movably mounted on the guide rod 52 in a vertical direction. The upper end of the bracket 51 and the movable body 53 are elastically urged downward.
And a coil spring 54 disposed so as to surround the guide rod 52 with the upper surface of the link member 25. The lower end 42 of the link member 25 is rotatably connected to the movable body 53 via the shaft pin 55, thus The lower end 42 of the link member 25 is
Is connected to the vertical frame 2.

The link lifting mechanism 11 is fixed to the upper ends of the vertical frames 2 and 3 and the bracket 61 covered by the upper frame 15.
And 62, which are wound around the pulleys 63 and 64 and engaged therewith, and the pay-out ends 65 and 66 are wound and attached to the shafts 67 and 68, respectively. Metal belts 69 and 70 as long bodies, movable tables 75 and 76 rotatably mounted on shafts 67 and 68, and roller guide path 19
(The vertical frame 3 side is not shown), and the movable tables 75 and 7
6 includes rollers 71 to 74 rotatably supported by the motor 6 and a rotation driving device 77 for rotating the pulleys 63 and 64. The rotation driving device 77 includes an electric motor 78 with a speed reducer attached to the bracket 61 and an electric motor 78.
Gear 80 attached to the output rotary shaft 79 of the speed reducer
And a rotating shaft 81 that is rotatably supported at its ends by brackets 61 and 62, respectively, and is disposed between upper ends of the vertical frames 2 and 3.
In order to guide the turning of the belts 68 and 69 and the gear 82 fixed to the rotating shaft 81 and meshing with the gear 80, respectively,
A turning roller 83 (one not shown) is rotatably mounted on each of the brackets 61 and 62, and pulleys 63 and 64 are fixed to the rotating shaft 81.

The tilt mechanism 12 has one end connected to one end of an uppermost link member 25 which is the upper end of the first link row 27 via a shaft pin 26, and the other end connected to the second link row 30. A rotatable tilt arm 91 rotatably connected to one end of the link member 28 at the upper end via a shaft pin 29, and a cam mechanism 92 for setting the tilt state of the tilt arm 91 are provided. The feeding end 65 of the belt 69
The shaft 67 wound and connected is a tilt arm 91
And thus the feeding end 6 of the belt 69
5 is a link mechanism 7 via a shaft 67 and a tilt arm 91
, The link lifting mechanism 11
Is designed to lift the upper end of the link mechanism 7 via the tilt arm 91. The end 6 of the uppermost slat 4 is fixedly connected to the tilt arm 91 by a fixture 33 passing through the straight slit 17, and the fixture 33 for the uppermost slat 4 is tilted. Arm 9
1 so as to be concentric with the shaft 67 fixed to one surface of
It is fixed to the other surface of the tilt arm 91.

The cam mechanism 92 includes a roller 95 as a cam rotatably mounted at an intermediate portion of the tilt arm 91 above the mounting position of the mounting member 33, and the inner wall 21.
And a guide surface 96 for guiding the movement of the roller 95 when the link lifting mechanism 11 lifts the upper end of the link mechanism 7.

The guide surface 96 is continuous with the linear guide surface 97 extending in the vertical direction and the linear guide surface 97, and intersects with the direction in which the linear guide surface 97 extends. A guide surface 98;
Is a straight slit 17 extending vertically so that the attachment 33 can penetrate and allow the attachment 33 to move up and down.
And the intersection guide surface 98 has a straight slit 17
And intersects the direction in which the linear slit 17 extends, and in this example, defines an intersecting slit 99 extending orthogonally. The cross slit 99 is formed on the inner wall 21 similarly to the straight slit 17.

In the above blind device 1, the opening 16
When the link is opened, the link rows 27 and 30 are folded, and each of the slats 4 is tightly overlapped (bundled) below the opening 16. When closing the opening 16, first, the electric motor 78 is operated, and the rotation of the output rotation shaft 79 rotates the pulley 63 via the gears 80, 82 and the rotation shaft 81. And the tilt arm 91 is moved to the roller guide path 1 via the movable base 75 and the rollers 71 and 72.
9, and ascends the tilt arm 91, as shown in FIG.
Are also extended from the upper end side, and as a result, the horizontal link members 31 of the link row 32 are also lifted upward from above.
Each of the slats 4 fixed to the tilt arm 91 and the lateral link member 31 is sequentially lifted in the closing direction of the opening 16. As shown in FIG. 3, when the cam roller 95 is guided in contact with the linear guide surface 97, the tilt arm 91, the link row 27, and the 30 and 32 are arranged.

Further, the link rows 27 and 30 are extended by the belt 69 being wound around the pulley 63, and the link rows 27 are extended at a position where the opening of the blind 5 is closed, in this example, a position immediately before the opening 16 is completely closed. , Link column 27
Is elastically urged downward by the coil spring 54,
This causes the tilt arm 91 to generate a counterclockwise rotational moment in FIG. In such a state, when the cam roller 95 faces the cross guide surface 98 and shifts from contact guide to the linear guide surface 97 to contact guide to the cross guide surface 98 and is disposed in the cross slit 99, the tilt arm 91 Starts rotating, and the link row 30 is lifted more than the link row 27, whereby the slats 4 are rotated in the counterclockwise direction, and sequentially set in the vertical tilt state. Further, as the belt 69 is wound around the pulley 63, the tilt arm 91 is rotated based on the contact guide on the cross guide surface 98, and as shown in FIG.
And 30 are extended substantially the entire length, the slats 4 are held in a substantially vertical tilting state, and the openings 16 are fully closed by the blinds 5 with the openings 16 completely blinded. Thereafter, the operation of the electric motor 78 is stopped, and the closing operation of the opening 16 by the blind 5 is completed. Electric motor 78
Even if the lower end 42 of the link member 25 is pulled upward in the extended link row 27, the movable body 53 elastically urged downward by the coil spring 54 moves upward. Therefore, even if the operation stop of the electric motor 78 is delayed, the lower end 42 of the link member 25 is not damaged, and conversely, the opening 16 can be reliably completely closed by the blind 5.

When the opening 16 is opened by the blind 5, the electric motor 78 is operated in the reverse direction, whereby the cam roller 95 shifts from contact guide to the cross guide surface 98 to contact guide to the linear guide surface 97. Thus, the link rows 27 and 30 are sequentially folded.

In the blind device 1, when the opening 16 is fully opened, each of the slats 4 is densely overlapped (bundled) below the opening 16, and the lower surface of the upper frame 15 is
Since the polymerized slat 4 does not exist, an original feeling of release can be enjoyed. Further, only the upper part of the opening 16 can be opened, and the feeling of release when partially opened becomes better than that of the conventional blind device.

In addition, in the closing operation of the blind 5, it is sufficient to lift the upper ends of the link rows 27 and 30, and the extension and contraction mechanism of the link rows 27 and 30 can be easily configured, and the lifting mechanism and the tilting mechanism that cause less trouble and the like. It can be.

Further, since the guide surface 96 of the cam mechanism 92 is provided on the inner wall 21, the tilt mechanism 12 can be made compact.

The link lifting mechanism 11 has an electric motor 78 and is configured to automatically lift the upper ends of the link mechanisms 7 and 8, but instead of this, as shown in FIGS. Alternatively, the link lifting mechanism 11 may be configured to manually lift the upper ends of the link mechanisms 7 and 8, and the emergency release mechanism 100 may be provided alongside the link lifting mechanism.

Link lifting mechanism 1 shown in FIGS. 7 to 12
1 is fixed to the upper ends of the vertical frames 2 and 3 and the bracket 6
Winding pulleys 103 and 104 rotatably supported on shafts 1 and 62 via shafts 101 and 102 respectively, pulleys 63 and 64 as rotating bodies similarly arranged on brackets 61 and 62, and winding around pulleys 63 and 64 And the belt 6 is wound around the deflecting pulleys 103 and 104 so that the feeding ends 65 and 66 are attached to the shafts 67 and 68, respectively.
9 and 70, movable tables 75 and 76 on which rollers 71 to 74 are rotatably mounted, and a rotation driving device 105 for rotating pulleys 63 and 64.

The rotary drive device 105 is rotatably supported at its ends by brackets 61 and 62, and is disposed between the upper ends of the vertical frames 2 and 3, and has a rotary shaft to which pulleys 63 and 64 are fixed. 81 and a pulley 6 fixed to the rotating shaft 81 in the housing 112 via the rotating shaft 81.
A worm shaft 117 having a worm wheel 113 connected to the worm wheel 113 and the worm wheel 113 and meshing with the worm wheel 113 is rotatably and vertically movable supported on the housing 112 via slide bearings 115 and 116. And a handle mechanism 118 that can rotate the worm shaft 117 manually.

A housing 112 through which the rotating shaft 81 rotatably penetrates is attached to the bracket 61. In the middle of the housing 112, when the worm shaft 117 descends, the housing 112 contacts the lower end of the worm 114 of the worm shaft 117, and Intermediate wall 12 that prevents shaft 117 from descending beyond a certain level
Worm shaft 117 is provided in the housing 1
12, penetrates the upper wall 122, the intermediate wall 121, and the lower wall 123, and extends in the vertical direction, that is, in the vertical direction, and is located in the space 125 in the housing 112 on the shaft 124 of the worm shaft 117. A flange 126 is integrally formed.

The handle mechanism 118 includes a worm shaft 117
A rotating rod 132 connected to the lower end of the shaft 124 via a universal joint 131, and a handle member 133 attached to the rotating rod 132. The rotating rod 132 extends downward so that the handle member 133 can be manually operated from the indoor side.

The rotation driving device 105 is provided with the emergency opening mechanism 10.
0, the worm shaft 117 is rotated via the universal joint 131 by manually rotating the rotation rod 132 about its axis via the handle member 133, and the worm shaft 117 is rotated by the rotation of the worm shaft 117. By rotating the worm wheel 113 that meshes with 114,
The pulleys 63 and 64 are rotated via a rotation shaft 81.

The emergency opening mechanism 100 has a rotatable lever member 141, and the lever member 141 is provided with a flange 12 formed integrally with the shaft 124 of the worm shaft 117.
6 and a lever portion 144 integrally formed with the forked portion 143.
3 at the lower part of the housing 112 via the pin shaft 145.
It is supported to be rotatable in the direction.

The bifurcated portion 143 engages with the flange 126 at the first rotational position of the lever member 141 in the R direction (the rotational position shown in FIG. 9) to move the worm shaft 117 downward (in the H direction). , The engagement between the worm wheel 113 and the worm 114 of the worm shaft 117 is maintained, and when the lever member 141 is in the second rotational position in the R direction (the rotational position shown in FIG. 11), the lever member 141 is moved to the flange 126. Is disengaged, and the worm shaft 117 can be moved directly downward (in the H direction). When the worm shaft 117 is allowed to move downward, the pulleys 63 and 64 are rotated in the direction A by the rotational moment applied to the pulleys 63 and 64 by the weight of the slats 4 via the belts 69 and 70. 1
The engagement between the worm shaft 13 and the worm 114 of the worm shaft 117 is released.

When the emergency release mechanism 100 is not operated (in the state shown in FIG. 9), the engagement between the worm wheel 113 and the worm 114 of the worm shaft 117 is maintained. The rotation of the lever member 144 in the R direction by manual operation of the lever portion 144 is prohibited (in the state shown in FIG. 11), and the rotation of the pulleys 63 and 64 is prohibited. The worm shaft 117 is allowed to move in the axial direction so that the worm wheel 113 and the worm shaft 117 can be disengaged from each other by the rotation of the pulley 63.
The free rotation of the belts 69 and 70 by the weight of the slats 4 is enabled by the free rotation of the slats 4 in the direction A.

Link lifting mechanism 1 shown in FIGS. 7 to 12
Device 1 provided with an emergency opening mechanism 100 and a blind device 1
As shown in FIG. 8, the emergency release mechanism 100 is
0, it is arranged on the window 161 of the building, and in such a blind device 1, when closing the opening 16,
First, the rotating rod 13 is manually operated by the handle 133.
2, the universal joint 131, the worm shaft 117,
The pulleys 63 and 64 are rotated in the direction opposite to the direction A via the worm wheel 113 and the rotating shaft 81, whereby the belts 69 and 70 are wound around the pulleys 63 and 64,
The tilt arm 91 is raised.

When the opening 16 is opened by the blind 5, the rotating rod 1 is manually operated by the handle 133.
32 is rotated in the reverse direction, and the tilt arm 91 is lowered.

When the opening 16 is urgently opened in a state where the opening 5 is partially closed or completely closed by the blind 5, the lever 144 is rotated in the R direction so that the flange 126 and the forked part are rotated. 143 is released. This disengagement allows the worm shaft 117 to move in the axial direction, causing the pulleys 63 and 64 to rotate in the direction A due to the weight of the slats 4, causing the worm wheel 113 and the worm shaft 1 to rotate.
17 is disengaged from the worm 114, and thus the free rotation of the worm wheel 113, that is, the free rotation of the pulleys 63 and 64 via the rotary shaft 81, becomes possible. The belts 69 and 70 are fed out by their own weight, the slats 4 are lowered, the partially closed state or the completely closed state of the opening 16 by the blind 5 is released, and the opening 16 is completely opened. Become so.

In the blind device 1 provided with the emergency release mechanism 100, the blind 5 can be brought to the open state in an emergency, and the emergency release mechanism 100 raises the upper ends of the link mechanisms 7 and 8 by the link lifting mechanism 11. Is released and the slats 4 are lowered by their own weight, so that no emergency power is required, and emergency opening can be performed without any problem even in an abnormal situation such as a power failure.

Further, the emergency opening mechanism 100 enables the worm shaft 117 to move in the axial direction (H direction), and through the change in the meshing state between the worm wheel 113 and the worm shaft 117, the opening 16 by the blind 5 is changed. Since the emergency release is performed, it is easy to return after the emergency release.

In addition, since the emergency release mechanism 100 has the rotatable lever member 141, the lever member 14
By operating 1, it is possible to bring the blind 5 into an open state in a single action, a quick emergency opening can be achieved, and the lower ends of the link mechanisms 7 and 8 are pulled downward by the elastic mechanisms 9 and 10. Therefore, since the slat 4 can be given an elastic descending force in addition to its own weight,
Emergency opening by the emergency opening mechanism 100 can be reliably and quickly caused.

In the emergency opening mechanism 100, the opening 1
6, the rotation of the pulleys 63 and 64 in the direction A is mainly caused by the weight of the slat 4, but elastic means such as a coil spring is disposed between the intermediate wall 121 and the flange 126. The worm shaft 117 is always elastically urged in the H direction. When the opening 16 is urgently opened, the pulleys 63 and 64 rotate in the A direction by the elastic force of the elastic means in addition to the weight of the slats 4 in the emergency. May be caused.

[0050]

According to the present invention, an unsightly polymerized slat can be eliminated when the opening is fully opened, the original feeling of release can be enjoyed, and the simple structure and excellent safety can be obtained. In addition, it is possible to provide a blind device that can reduce the number of failures and the like and can be a compact tilting mechanism.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a preferred example of an embodiment of the present invention.

FIG. 2 is a front detailed explanatory view of the example shown in FIG. 1;

FIG. 3 is a detailed side view of the example shown in FIG. 1;

FIG. 4 is a detailed explanatory diagram in a vertical frame of the example shown in FIG. 1;

FIG. 5 is an operation explanatory diagram of the example shown in FIG. 1;

FIG. 6 is an operation explanatory diagram of the example shown in FIG. 1;

FIG. 7 is a partially detailed explanatory view of another example of the preferred embodiment of the present invention.

FIG. 8 is a schematic plan view illustrating a case where the example shown in FIG. 7 is applied to a window of a building.

FIG. 9 is a detailed side view of the example shown in FIG. 7;

FIG. 10 is a partially enlarged rear view of the example shown in FIG. 7;

FIG. 11 is an operation explanatory diagram of the example shown in FIG. 7;

FIG. 12 is an enlarged perspective view of the lever member shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Blind device 2, 3 Vertical frame 4 Slat 5 Blind 7, 8 Link mechanism 11 Link lifting mechanism 12, 13 Tilt mechanism 27 First link row 30 Second link row 32 Third link row 91 Tilt arm 92 Cam mechanism 95 Roller 96 Guide surface

Claims (4)

[Claims] 1. A blind comprising a large number of slats arranged in a vertical direction between a pair of vertical frames, and a telescopic link mechanism supporting each end of the slats and disposed on the vertical frame. A link lifting mechanism that raises the upper end of a link mechanism whose lower end is connected to the vertical frame and arranges the blind in the opening closed position, and a slat through the link mechanism at a given opening closed position of the blind. A tilt mechanism for inclining the first link row, a second link row arranged in parallel with the first link row, and one end of the first link row, A third link row each having the other end connected to the second link row, and each end of the slat is connected to the third link row, and the tilt mechanism includes one end. Is on the upper end of the first link row and the other end is on the second link. The tilt arm includes a rotatable tilt arm rotatably connected to the upper end of the link row, and a cam mechanism for setting the tilt state of the tilt arm. The link lifting mechanism is provided via the tilt arm. The upper end of the link mechanism is lifted by a cam mechanism. The cam mechanism is provided on a cam attached to an intermediate portion of the tilt arm and on inner wall surfaces of the pair of vertical frames facing each other. A blind device comprising: a guide surface for guiding movement of a cam during lifting. 2. The blind device according to claim 1, wherein the cam comprises a roller rotatably attached to an intermediate portion of the tilt arm. 3. The guide surface includes a linear guide surface extending in a vertical direction, and an intersecting guide surface that is continuous with the linear guide surface and extends to intersect with the direction in which the linear guide surface extends. The blind device according to claim 1, wherein 4. The end of the uppermost slat is supported on a tilt arm via a fixture, and each end of the other slats except the uppermost slat is connected via a respective fixture. Each mounting tool is supported by the link mechanism and penetrates the inner side walls facing each other of the pair of vertical frames,
A linear slit extending in the vertical direction is formed to allow vertical movement of each mounting fixture, the linear guide surface defines a linear slit, and the intersection guide surface is continuous with the linear slit, 4. The blind device according to claim 3, wherein a cross slit extending in a direction intersecting with a direction in which the straight slit extends is defined.