JPS5911332Y2 - solar selective blind device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an improvement in the operating device for solar selective blinds.

The applicant of this invention previously proposed a blind that can take solar heat into a room or reflect it back into the room with a single touch (Japanese Patent Application No. 150643/1982).

The proposed blind alternately arranges black or other heat-absorbing slats and white or other reflective slats, supports each with an independent ladder cord, and moves one ladder cord up and down with a single touch to place the white slats on top of the black slats. Or vice versa, the upper surface of the slat can be switched to substantially white or black to enable selection of solar heat.

For this purpose, the hollow shaft is rotatably and freely inserted into the receiver at both ends, and the upper end of one of the ladder cords is pulled into the interior through a hole drilled in the hollow shaft, and then pulled out to the outside to be attached to a hook, etc. It's hanging.

However, since each upper end of the ladder cord bears the full load of the slat, it is desirable to avoid frictional contact and external exposure.

The purpose of this invention is to provide an operating device that prevents frictional contact and external exposure of each upper end of the rudder cord. It is connected to an abrasive operating cord, and the operating cord is pulled out to the outside via a locking device provided on a receiver of the hollow shaft.

The device of this invention will be explained based on the embodiment shown in the drawings.

As shown in FIG. 1, each upper end of a ladder cord 3 that supports a black slat 2 is fixed to the outer periphery of a hollow shaft 1 rotatably supported at both ends with adhesive tape, and a cover 4 is placed on top of the ladder cord 3. Cover.

Each upper end of the ladder cord 6 supporting the white slat 5 is drawn into the interior through a hole 7 made in the hollow shaft 1.

Each retracted upper end is extended to one side and tied to one end of a thick wear-resistant operating cord 21 inside the hollow shaft 1.

A metal or rubber ring 22 to protect the knot.
Place it over the knot and crush it.

The operating cord 21 enters from one end 19 of the hollow shaft 1 into the receiver 8 that bears it, and passes through a locking device 30 provided inside the receiver 8.

The locking device 30 includes a box body 23 fixed inside the receiver 8, a guide roll 24 rotatably supported on the box body, a shaft shaft 26 extending obliquely upward from the outlet 25 beside the guide roll 24, and It consists of a toothed roll 27 supported vertically and rotatably along a bearing groove.

The operating cord 21 is guided by the guide roll 24, passes between it and the toothed roll 27, and exits from the outlet 25.

A knob 9 is attached to the lower end of the operation cord 21.

A lifting cord 11 for hanging the bottom rail 10 passes through a hole in each slat 2, 5 and enters the interior through a hole 12 made in the hollow shaft 1.

The lifting cord 11 enters the receiver 14 through the hollow bevel gear 13 fixed to the other end of the hollow shaft 1, and then enters the receiver 14.
4, the other bevel gear 15, a hollow flexible joint 16 connected to it in sequence, a hollow operating rod 17, and a grip 18.
pass through and exit to the outside.

The grip and operating rod 17 form a stopper and can lock the lifting cord 11.

The left and right receivers 8, 14 are fitted and fixed from the front side into a fixture 20 that is attached to a window frame or the like.

A guide made of resin is fitted into the holes 7 and 12 made in the hollow shaft 1 to prevent the ladder cord 6 and the lifting cord 11 from being worn out.

Next, the operation of the device of this invention will be explained.

When the knob 9 of the operation cord 21 is pulled straight down, the locking device 2
Since the No. 3 toothed roll 27 descends along the bearing groove 26, the gap between the toothed roll 27 and the guide roll 24 is widened, and the operating cord 21 is unlocked and pulled out downward.

As a result, as shown in Figure 2, the ladder cord 6 pulls up the black slats 2 and places them under the white slats 5, so that the blind is essentially the same as one with only white slats, effectively blocking sunlight. reflected outside the room.

When the knob 9 is released, the weight of the slat 2 tries to pull up the operating cord 21, but the toothed roll 27 rises along the bearing groove 26 together with the operating cord 21, and the operating cord 21 is pulled up against the guide roll 24. Since the slats 2 are locked in between, the slats 2 do not lower and stop at that position.

When the knob 9 is pulled inward and released, the operating cord 21 is pulled up by the weight of the slat 2 without contacting the descended toothed roll 27.

As a result, the black slat 2, which has descended under its own weight, overlaps the white slat 5.

The blinds are essentially the same as those with only black slats, effectively absorbing solar heat into the room.

Each upper end of the ladder cord 6 is tied to a thick operating cord 21 inside the hollow shaft 1, and the knot is protected by a ring 22, so the upper end is exposed to the outside and does not get tangled or rubbed and cut. Never.

Further, since the locking device 30 reliably locks the operating cord 21, there is no need to hang the operating cord 21 on a hook or the like.

No matter which state the blind is in, when you pull the lifting cord 11 hanging down from the grip 18, the bottom rail 10
is raised together with the slats 2 and 5, and when the lifting cord 11 is released, the bottom rail 10 is stopped at that position by the locking action of the grip 18.

Furthermore, when the grip 18 is lowered, the locking action is released and the bottom rail 10 descends under its own weight.

When the grip 18 is turned in one direction, the hollow shaft 1 turns via the bevel gear 13.15, and the ladder cords 3 and 6 also turn by the same angle, so the black slats 2 and white slats 5 tilt at the same angle to open the blind. .

When the grip 18 is turned in the opposite direction, the black slats and the white slats are tilted in the opposite direction by the same angle to close the blind.

As mentioned above, the blind of this invention can be switched from a solar heat reflecting blind suitable for cooling to a solar heat absorbing blind suitable for heating, or vice versa, by one-touch operation of the knob 9.

By making the outer diameter of the upper hollow shaft equal to or smaller than the front and rear width of the slats, the blind of this invention can be easily installed in a limited space such as a double-glazed window.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a front view in cross section of a part of a blind equipped with a device according to an embodiment of this invention, and Figs. 2 and 3 are views of the blind shown in Fig. 1 during solar heat reflection and a perspective view showing the state at the time of absorption, respectively. 1: Hollow shaft, 2: Black slat, 3: Ladder cord, 5
: White slat, 6: Ladder cord, 7: Hole, 8: Receiver, 21: Operation conid, 22: Ring, 23: Box, 24
: Guide roll, 25: Bearing groove, 27: Tooth roll, 3
0: Locking device.

Claims (2)

[Scope of utility model registration request] (1) A hollow shaft is rotatably and penetratingly attached to a receiver at both ends, and reflective color slats and endothermic color slats are alternately supported via separate ladder cords, and one of the ladder cords is supported alternately through separate ladder cords. The upper end of the ladder cord is fixed to the circumferential surface of the hollow shaft, the upper end of the other ladder cord is connected to one end of the operating cord by passing it through a hole drilled in the hollow shaft, and the other end of the operating cord is connected to the inner end of the ladder cord. The operating cord is pulled out from a locking device installed inside one of the receivers, and is placed between a guide roll that is rotatably supported in the locking device and a toothed roll that is rotatably and vertically supported. A solar selective blind device featuring a through-hole. (2) A solar heating system characterized by covering the connecting part of the ladder cord and the operation cord with a ring, providing a bearing groove extending diagonally up and down in the box of the locking device, and supporting a toothed roll in the bearing groove. Selective blind device.