JPH0431993Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a blind lifting device that raises and lowers blinds attached to each of a plurality of windows arranged horizontally using a single drive source. .

[Conventional technology]

Conventionally, a blind lifting device for lifting and lowering blinds attached to each of a plurality of windows arranged horizontally has been equipped with a drive motor for each blind.
It is known that the blinds are configured to move up and down independently by starting each drive motor individually in forward and reverse rotation.

[Problem that the invention attempts to solve]

However, in this type of blind lifting device, since a drive motor is provided for each blind as described above, a large amount of installation space is required for the drive motor, and the cost increases due to the large number of drive motors. There was a problem.

The present invention aims to provide a blind lifting device that can raise and lower the blinds attached to each of a plurality of windows arranged horizontally using a single drive source, and is easy to construct and maintain. This is the purpose.

[Means for solving problems]

The means adopted by the present invention to solve the above object will be described below with reference to the accompanying drawings.

That is, according to the present invention, the lower stile W3 of the plurality of windows W
a rotary drive shaft 16 which is arranged in a frame B extending over all the windows W adjacent to the drive motor 15 and rotates in a direction to move up and down all the blinds A attached to the windows W when the drive motor 15 is activated; Lower stile W of window W
3, and a first friction roller rotatably supported in the frame B, rotated by the rotation of the rotary drive shaft 16, and mounted on the rotary shaft 7 of each window W. 13, and a second friction roller 18 which is rotatably arranged on the upper stile W1 of the window W and winds up and down the lifting cord 3 of the blind A.
By adopting a means of constructing the winding shaft 4 which is connected so as to be able to be fed out, and the endless belt 6 which is disposed on the vertical stile W2 of the window W and connects the rotary shaft 7 and the winding shaft 4, This solved the above purpose.

〔Example〕

Hereinafter, the present invention will be described in more detail based on embodiments shown in the accompanying drawings.

As shown in FIG.
It moves up and down. The blind A is
A large number of slats 2 connected by lifting cords 3, 3
The upper stile W1 of each window W
The slat 2 is raised and lowered by rotating a winding shaft 4 disposed inside the slat 2 and winding up and letting out the lifting cords 3, 3.

A first pulley 5 is fixed to one end of the winding shaft 4 within the vertical stile W2 of each window W. Further, a second pulley 8 is fixed to one end of the rotating shaft 7 arranged inside the lower stile W3 of each window W in correspondence with the winding shaft 4 within the vertical stile W2.
The first pulley 5 of the winding shaft 4 and the second pulley 8 of the rotating shaft 7 are connected via an endless belt 6 inside the vertical stile W2. The rotating shaft 7 has a bearing 1 inside the lower stile W3 of the window W.
0, 11 and an intermediate bearing 12, and as shown in FIG.
2, the first friction roller 13 is slidably attached in the axial direction via a key 9 fitted into the key groove 7a. In this way, the first pulley 5, second pulley 8, and first friction roller 13 constitute a driven lifting device.

Reference numeral 15 denotes a drive motor, and a rotary drive shaft 16 is connected to the drive motor 15 . This rotary drive shaft 15 is housed inside the frame B adjacent to the lower stile W3 of all the windows W, and rotates in a direction to move all the blinds A up and down when the drive motor 15 is activated. A gear 17 is fixed to the rotary drive shaft 15 in correspondence with the blind A. 18 is a second friction roller connected to a driven gear 19 that meshes with the gear 17.

The first friction roller 13 and the second friction roller 18 have a substantially truncated conical shape, and are arranged so that their respective inclined surfaces are in contact with each other. Furthermore, the first friction roller 13 is always urged against the second friction roller 18 by a spring 14. Therefore, the first friction roller 1
3 is adapted to come into contact with the intermediate bearing 12. Note that 13a is a contact portion of the first friction roller 13, and 12a is a contact portion of the intermediate bearing 12.

In the blind elevating device of the present invention, a clutch mechanism 29 for selectively elevating or lowering an arbitrary blind A is arranged for each window W. As shown in FIG. 2, this clutch mechanism 20 is arranged at the lower sill W3 of the window W (see FIG. 1), and includes a clutch 21 having a tip 21a at one end, and a clutch 21 at the other end of the clutch 21. It consists of a lever 22 that is rotatably connected and a holder 23 that slidably supports the clutch 21. As shown in FIG. 3, the clutch mechanism 20 is constructed by pushing the lever 22 into the holder 23 with the lever 22 aligned with the axial direction of the clutch 21, and inserting the tip of the clutch 21 into the intermediate bearing 12 and the first friction roller. 13, and move the first friction roller 13 to the left side of the rotating shaft 7 against the biasing force of the spring 14, thereby moving the first friction roller 13 into contact with the second friction roller 18. I'm starting to move away from it. Although not shown in the drawings, the clutch 21 actually has a bifurcated end.

Furthermore, in the blind lifting device according to another embodiment of the present invention, a friction device 27 is provided to prevent excessive force (winding force) from being applied to the lifting cord 3 when the blind A reaches its full height. It is provided for each window W. As shown in FIG. 4, this friction device 27 is arranged between the rotating shaft 7 of the blind lifting device shown in FIG. 1 and the shaft 26 of the second pulley 8 facing the tip of the rotating shaft 7. ing. The friction device 27 includes a rotating body 28 that is slidably attached to the rotating shaft 7 via a keyway 7b, a friction plate 29 that is fixed to the shaft 26 facing the rotating body 28, and a friction plate 29 that is fixed to the rotating shaft 7 so as to face the rotating body 28. It consists of a loaded spring 30. This spring 30 presses the rotating body 28 against the friction plate 29 and transmits the rotational force of the rotating shaft 7 to the shaft 26 to move the blind A up and down, and when the blind A rises and the rotation of the shaft 26 stops. The rotating body 28 of the rotating shaft 7 is urged against the friction plate 29 of the shaft 26 so that the rotating body 28 is rotated idly relative to the friction plate 29.

[Effect]

Next, the operation of the blind lifting device according to the present invention will be explained.

First, when raising the blind A, the drive motor 15 is started and the rotary drive shaft 16 is moved by the drive motor 1.
Rotate counterclockwise when viewed from the 5th side. As a result, the rotating shaft 7 rotates clockwise via each gear 17, 19 and each friction roller 18, 13, and the rotating body 28 of the friction device 27 transmits its rotational force to the shaft 26 via the friction plate 29. do. Therefore, the rotation of the shaft 26 is transmitted to the winding shaft 4 via the endless belt 6, so that the winding shaft 4 rotates clockwise, winds up the lifting cord 3, and raises the slat 2 of the blind A. .

When the slat 2 of the blind A is completely raised, the winding shaft 4 stops rotating.
Along with this, the rotation of the shaft 26 also stops. As a result, the rotating body 28 of the friction device 27 idles relative to the friction plate 28, and as a result, the rotational force of the rotating shaft 7 is transferred to the shaft 26.
Therefore, no winding force acts on the lifting cord 3.

Conversely, when lowering the blind A, the drive motor 15 is started to rotate the rotary drive shaft 16 in a clockwise direction as viewed from the same side. This causes the rotary shaft 7 to rotate in a counterclockwise direction via the gears 17, 19 and the friction rollers 18, 13, and the rotary body 28 of the friction device 27 rotates in a counterclockwise direction via the friction plate 29 to the shaft 26.
Therefore, the rotation of the shaft 26 is transmitted to the winding shaft 4 via the endless belt 6, so that the winding shaft 4 rotates counterclockwise to pay out the lifting cord 3 and lower the slats 2 of the blind A.

When selectively moving an arbitrary blind A up and down, when the tip of the clutch 21 of the clutch mechanism 20 is inserted between the contact parts 12a and 13a of the intermediate bearing 12 and the first friction roller 13, the first friction The roller 13 is moved to the left side of the rotating shaft 7 against the urging force of the spring 14. As a result, the first friction roller 13 separates from the second friction roller 18, and as a result, the rotation of the rotary drive shaft 16 is reduced to the rotation shaft 7.
It will no longer be communicated to you. Therefore, the rotary shaft 7 does not rotate due to the rotation of the rotary drive shaft 16, and therefore the blind A does not move up or down.

Note that the clutch mechanism 20 does not have to be a manual type in which the lever 22 is operated by hand, but may be one in which the lever 22 is operated using a solenoid.

[Effect of idea]

As explained above, the blind elevating device of the present invention includes a rotary drive shaft that rotates in the direction of elevating and lowering the respective blinds attached to a plurality of windows by activation of a drive motor, and is rotatably disposed on each of the windows. a rotating shaft, a pair of rollers that transmit the rotation of the rotational drive shaft to the rotating shaft, a winding shaft that is rotatably arranged on each window and connected to the winding and unwinding cord of the blind, and the rotating shaft and the winding shaft. Since it is composed of an endless belt that connects the take-up shaft so that rotation can be transmitted, it is possible to raise and lower multiple blinds at the same time with a single drive motor. Since the rotating shaft is located below the window, it has the practical effect of being easy to construct and easy to maintain.

[Brief explanation of the drawing]

FIG. 1 is a front view of the blind lifting device according to the present invention, FIG. 2 is an enlarged view showing the clutch mechanism of the blind lifting device, FIG. FIG. 3 is a cross-sectional view of the friction device. 3... Lifting string, 4... Winding shaft, 6... Endless belt, 7... Rotating shaft, 15... Drive motor, 16
... Rotation drive shaft, 26 ... Axis, A ... Blind, B ... Frame, W ... Window, W1 ... Upper stile, W2
...Stile, W3...Lower stile.

Claims (1)

[Claims for Utility Model Registration] A blind lifting device that simultaneously lifts and lowers blinds A attached to each of a plurality of windows W arranged horizontally, wherein all the windows adjacent to the lower stile W3 of the windows W are A rotary drive shaft 16 that is arranged in a frame B that extends over the window W and rotates in a direction that moves all the blinds A attached to the window W up and down when the drive motor 15 is activated.
, a rotary shaft 7 rotatably disposed on the lower stile W3 of the window W, and a rotary drive shaft 16 rotatably supported within the frame B to rotate each window W.
a second friction roller 18 that rotates the first friction roller 13 attached to the rotating shaft 7 of the window W, and a second friction roller 18 that is rotatably arranged on the upper stile W1 of the window W.
a winding shaft 4 connected to the lifting cord 3 so as to be able to be wound up and fed out; and an endless belt 6 disposed on the vertical stile W2 of the window W and connecting the rotating shaft 7 and the winding shaft 4.
A blind lifting device comprising: