JPS6140878Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a roll screen device that can be easily turned over.

One end of the coil spring into which the screen of the roll screen device is inserted is fixed to a winding cylinder, and the other end is fixed to a fixed end, and the fixed end is fixed non-rotatably to a bracket bearing the fixed end. For locking, there are two methods: one is to fit the square shaft of the fixed end into the square groove of the bracket, and the other is to fit the pin of the bracket into the pin hole of the fixed end. In both types of conventional devices, the bracket on the opposite side, that is, on the free end side, only supports the round shaft at the end, and is not provided with any function to stop its rotation. Therefore, the front and back sides of the screen device are fixed, and it is not possible to turn the cylinder around which the screen is wrapped and fit it into the bracket.

If you use a solar selective roll screen with one side finished with a reflective surface such as white and the other side finished with a heat absorbing surface such as black, the reflective surface faces the window when cooling, and the heat absorbing surface faces the window when heating, heating and cooling can be achieved. It is possible to save the energy required for However, as mentioned above, with conventional screen devices, it is not possible to reverse the screen winding tube and fit it into the bracket. Therefore, the screen must be removed from the winding tube and reattached face-to-face, or the screen must be attached to the left and right brackets. I had to replace it. However, if the bracket that receives the square shaft is installed in the opposite direction, the entrance of the groove will face outward, so it is often impossible to swap the left and right sides. In any case, such work is extremely troublesome.

The purpose of this invention was to create a cylinder with a screen wrapped around it.
The purpose is to provide a roll screen device that can be rotated 180 degrees and fitted into a bracket as it is.
the fixed cylinder end of the cylinder body is engageable with the restraining member;
The reason lies in that the free cylinder end on the opposite side is formed so as to be unable to engage with the restraining member.

The device of this invention will be explained based on the embodiment shown in the drawings. As shown in FIG. 1, the cylinder 4 of the roll screen device is housed in a head box 5 that can be opened and closed. The solar thermal selection roll screen 7 wound around the cylinder body 4 is pulled out downward, and both sides of the screen descend within the guide rails 8. When the screen 7 is completely lowered, the weight bar 9 attached to the tip of the screen 7
Hook 10 is hung on to lock the screen 7.

One side of the screen 7 is finished with a reflective surface 7a of white or the like, and the other side is finished with an endothermic surface 7b of black or the like.
The reflective surface 7 of the screen 7 during the summer when cooling the room
A is directed toward the window 13, and as shown by arrow A in FIG. 1, solar heat incident from outside is reflected back to the outside through the window 13, thereby preventing a decrease in indoor cooling efficiency due to solar heat. During the winter when heating the room, the cylindrical body 4
Remove it from bracket 2, turn it left and right and put it back into the bracket. As shown by the chain line in FIG. 1, the screen 7 is inverted so that its heat-absorbing surface faces the window, so that the incident solar heat is absorbed by the screen 7 and contributes to indoor heating.

The device of the embodiment shown in FIGS. 2 to 5 is of a type in which a pin 24 installed in a bracket 23 is inserted into a pin hole 22 made in the end face of the fixed end 21 to stop the rotation of the fixed end 21. . A plurality of pin holes 22 are provided at equal angles and on the same circle around a round shaft 26 that protrudes from the axis of the end surface of the fixed end portion 21. Free end 25
A stepped round shaft 27 is slidably inserted into the axis of the flange 28 of the round shaft 27 and the bottom plate 29 of the free end 25.
A compression coil spring 30 is interposed in the hollow space between the two to press the round shaft 27 outward. An annular groove 31 is provided in the end surface of the free end 25, and the radius and depth of the annular groove 31 are equal to the distance and depth from the axis of the pin hole 22 of the fixed end 21 on the opposite side. Double round shaft 26,2
The tip of 7 is the same round shaft hole 3 of the bracket 23 on the left and right sides.
However, a gap corresponding to the length of the tip of the round shaft 26 remains between the end surface of the free end portion 25 and the bracket 23, and the step of the round shaft 27 comes into contact with the surface of the bracket 23. Press the cylinder 4 toward the free end to release the spring 3.
0 is compressed and the cylindrical body 4 is shifted until the end surface of the free end 25 touches the bracket 23, and the round shaft 26 comes out of the round shaft hole 32 of the bracket 23. At this time, since the pin 24 of the bracket on the free end side enters the annular groove 31, no part of the cylindrical body 4 is obstructed by the pin 24. In this way, the cylinder 4 can be easily removed from the bracket 23. Cylindrical body 4
When rotating the bracket 23 by 180 degrees and fitting it into the bracket 23, first, the round shaft 27 of the free end 25 is inserted into the round shaft hole 32 of the bracket 23, the cylinder 4 is pressed, and the round shaft 27 is retracted. Next, the round shaft 26 on the fixed end side is aligned with the round shaft hole 32 of the bracket 23, the cylinder 4 is released, and the pin 24 of the bracket 23 is fitted into the pin hole 22. Fitting of the cylinder 4 is also extremely easy.

In both embodiments, whether the fixed end is on the left or right side, the fixed end engages with the bracket reliably and its rotation is restrained, so that there is no problem in winding up the screen. Also, whether the fixed end is on the left or right side, attachment and detachment to the bracket is extremely easy. Therefore, the front and back sides of the solar thermal selection roll screen can be easily turned over.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of an apparatus according to an embodiment of the invention, FIG. 2 is a partially sectional front view of the cylinder shown in FIG. 1, and FIG. 3 is an elevational view of the bracket shown in FIG. 1. Fourth
5 and 5 are diagrams showing the left and right end faces of the cylindrical body. 21: Rotating end, 2, 23: Bracket, 2
5: Free end, 4: Cylindrical body, 7: Screen, 2
2: Pin hole, 24: Pin, 26, 27: Round shaft, 3
0: Compression coil spring, 31: Annular groove.

Claims (1)

[Scope of utility model registration request] The left and right brackets are provided with members that are symmetrical to each other to prevent rotation of the fixed ends of the cylindrical body, the fixed ends are formed to be engageable with the stop members, and the free ends are not engageable with the stop members. In the roll screen device, a round shaft is fixed to the fixed end, a pin hole is made in the end face of the fixed end, and a stepped round whose tip is the same shape as the round shaft is formed in the free end. The shafts are mounted symmetrically so that they can move forward and backward, and the stepped portion of the round shaft is pressed outward by a compression coil spring to protrude by at least the same length as the protrusion length of the fixed round shaft, and the end surface of the free end portion is An annular groove is formed at the same radial position and the same depth with respect to the shaft center as the pin hole, a pin that engages the pin hole is implanted in the bracket, and a ring groove is formed in the bracket to be larger than the tip of the round shaft. A roll screen device characterized by having a round hole with a smaller diameter than the step.