JP2012097492A - Roll screen device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roll screen device capable of suppressing the increase of the slide resistance of a screen, securing a lighting amount when lowering the screen, and presenting the effect of suppressing the temperature rise of the screen during solar shading.SOLUTION: A roll screen device 1 includes: a canvas 10 which covers the surface of a sash 2; an upper winding roll 20 which is positioned at the upper part of the sash 2; a lower winding roll 30 which is positioned at the lower part of the sash 2; a frame 40 which is respectively extended in the width direction and the vertical direction so as to surround the sash 2, and to which the canvas 10 is closely attached; a roller 50 which closely attaches or separates the canvas 10 to/from the frame 40; a guide rail 60 which guides the slide of the roller 50; and a spring 70 which energizes the roller 50. After the canvas 10 covers the surface of the sash 2 and the winding of the canvas 10 is ended, the lower winding roll 30 is turned against the energizing force of the spring 70 and slides the roller 50 until the canvas 10 is closely attached to the frame 40.

Description

  The present invention relates to a roll screen device including a screen that shields solar radiation.

  As a roll screen device of the prior art, a non-breathable screen that can be raised and lowered along a guide is provided on the outer side facing the opening, and when the opening is closed by lowering the screen, the opening containing the screen and the translucent plate There is one that controls the heat flow in and out of the opening by sealing the space between the two (see, for example, Patent Document 1).

  Further, the first fabric having light shielding properties and the second fabric having translucency are connected to each other, and the first fabric is determined by the amount of winding of the screens of the upper winding device and the lower winding device. There is a roll screen device that selects the second fabric and the second fabric (for example, see Patent Document 2).

JP 2002-121981 JP 2008-184853 A

  However, in the roll screen device of Patent Document 1, since the screen slides along the guide, sliding resistance occurs when the screen is raised and lowered. Therefore, in order to raise and lower the screen, a force (torque) that exceeds the sliding resistance is required, which causes a problem of increasing the size and cost of the motor.

  Moreover, in the roll screen apparatus of patent document 2, when the 1st cloth | dye provided with light-shielding property is selected, although heat-shielding property improves, there exists a problem that the amount of light collection will fall and a room will become dark. Further, when the solar radiation is shielded, only the surface of the first fabric is ventilated, and there is a problem that the effect of suppressing the temperature rise of the first fabric itself is reduced.

  The present invention has been made in view of the above problems, suppresses an increase in sliding resistance of the screen, can secure a light intensity when the screen is lowered, and is excellent in an effect of suppressing a temperature rise of the screen at the time of solar radiation shielding. Another object is to provide a roll screen device.

  The first problem-solving means of the present invention includes a screen that covers one surface of a shoji, an upper winding roll that is positioned above the shoji and winds or unwinds the screen, and a lower portion of the shoji. Positioned in the width direction so as to surround the shoji between the lower winding roll and the lower winding roll that rewinds or winds the screen in conjunction with the upper winding roll. And a frame which is extended in the vertical direction and is in close contact with the screen, and is positioned between the upper winding roll and the lower winding roll at the upper and lower portions of the shoji, respectively. A roller that slides in close contact with or away from the frame, and guides the slide of the roller so that the screen is in close contact with or away from the frame. A roll screen device comprising a guide rail and an elastic body that biases the roller in a direction in which the screen is separated from the frame, wherein the upper winding roll or the lower winding roll has the screen After the screen of the shoji is covered and the winding of the screen is completed, the screen is rotated against the urging force of the elastic body, and the roller is slid until the screen comes into close contact with the frame.

  Further, the second problem solving means of the present invention is characterized in that the elastic body expands and contracts along the frame, one end is fixed to the frame, and the other end is connected to the roller via a connecting member. It is.

  The third problem solving means of the present invention is such that the roller slides to the side of the shoji with respect to the surface of the frame where the screen is in close contact.

  In the roll screen apparatus of the present invention, when the screen is wound or unwound, the screen is in a state of being separated from the frame by a roller biased by an elastic body. Therefore, there is no sliding resistance between the screen and the frame. Further, when the screen is lowered so as to cover the surface of the shoji (when the solar radiation is shielded), the screen and the frame are separated from each other by the urging force of the elastic body. Diffused light enters from between the screen and the frame, and the required amount of light can be secured. Further, since the screen is separated from the frame, ventilation can be taken in from both the solar radiation side and the shoji side, and the heat rise from both sides of the screen by convection can suppress the temperature rise of the screen. The upper winding roll or the lower winding roll is a roller that rotates against the urging force of the elastic body after the screen covers the surface of the shoji and finishes winding the screen, and the screen is in close contact with the frame. Because of the configuration of sliding (when keeping warm), a space closed by a screen, a shoji, and a frame is formed, and this closed space acts as a heat insulating space to obtain a heat insulating effect. In addition, since the winding force (rotational power) of the upper winding roll or the lower winding roll is used to slide the roller until the screen comes into close contact with the frame, a separate drive source is not required for sliding the roller, which is costly. The increase can be suppressed.

  In addition, the elastic body extends and contracts along the frame, and one end is fixed to the frame, and the other end is connected to the roller via a connecting member. Since there is no need for diameter, spring length, etc., the degree of freedom in designing the guide rail is improved.

  In addition, since the roller is configured to slide to the shoji side from the surface where the screen of the frame is in close contact, after the upper winding roll or the lower winding roll covers the surface of the shoji and the screen has been wound up, When the roller is slid by rotating against the urging force of the elastic body, reliable contact between the screen and the frame can be obtained.

It is the roll screen apparatus of this invention, (a) Side view in the case of a daylighting mode, (b) A perspective view. It is the roll screen apparatus of this invention, (a) side view in the case of solar radiation shielding mode, (b) perspective view. In the roll screen apparatus of this invention, it is the (a) side view and (b) perspective view which show the detail of the lower winding roll in the case of solar radiation shielding mode. In the roll screen apparatus of this invention, it is the (a) side view and (b) perspective view which show the detail of the lower winding roll in the case of heat retention mode. It is a perspective view at the time of attaching the roll screen apparatus of this invention to an opening / closing window.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1A is a side view and FIG. 1B is a perspective view in the daylighting mode of the roll screen device 1 of the present invention. The roll screen device 1 guides the slide of the canvas 10 (screen), the upper winding roll 20 in a state in which the canvas 10 is wound, the lower winding roll 30, the frame 40, the roller 50, and the roller 50. It comprises a guide rail 60 and a spring 70 (elastic body) that urges the roller 50.

  The canvas 10 is a cloth material having a light shielding property and a heat shielding property, and wires 11 are attached to both sides in the width direction of the shoji 2. The upper winding roll 20 always urges the canvas 10 in the direction of winding the canvas 10 around the upper winding roll 20 by a torsion spring (not shown). The lower winding roll 30 is provided with a driving motor 31 for winding the canvas 10 around the lower winding roll 30. The upper winding roll 20 and the lower winding roll 30 are connected by a wire 11. The canvas 10 is rewound from the upper winding roll 20 in conjunction with the winding of the lower winding roll 30. The frame 40 extends between the upper winding roll 20 and the lower winding roll 30 in the width direction and the vertical direction so as to surround the shoji 2. The contact surface 41 (surface) of the frame 40 is configured to have the same height from the shoji 2. The rollers 50 are respectively provided on the upper and lower portions of the shoji 2 between the upper winding roll 20 and the lower winding roll 30, and are guided by the guide rail 60. The spring 70 is provided so as to expand and contract along the frame 40 in the vertical direction, one end is fixed to the frame, and the other end is connected to the roller 50 via a stainless wire (connecting member). The spring 70 biases the roller 50 so that the wire 11 attached to the canvas 10 is separated from the contact surface 41 of the frame 40.

  2A is a side view and FIG. 2B is a perspective view of the roll screen device 1 according to the present invention in a solar shading mode. In the solar shading mode, the canvas 10 covers the surface of the shoji 2 on the outdoor side. At this time, the canvas 10 is held in a state without sagging by a torsion spring provided on the upper winding roll 20.

  FIG. 3 is a detail of the lower winding roll 30 in the solar shading mode, (a) a side view and (b) a perspective view. Since the structure of the upper part and the lower part of the roll screen apparatus 1 is the same, the structure of the lower part will be described in detail. The campus 10 is wound around the lower winding roll 30 via the roller 50 and the position regulating roller 32. A long hole 61 extending from the shoji 2 to the outdoor side is formed in the guide rail 60. The roller 50 engages with the elongated hole 61 and is guided along the elongated hole 61. In the solar shading mode, the roller 50 is located on the outdoor side of the long hole 61. The stainless steel wire 71 attached to the spring 70 is connected to the roller 50 via a first pin 62 and a second pin 63 provided on the guide rail 60. The spring 70 biases the roller 50 in a direction in which the canvas 10 is separated from the contact surface 41 of the frame 40.

  4A is a side view and FIG. 4B is a perspective view showing details of the lower winding roll 30 in the heat retaining mode in the roll screen device 1 of the present invention. The canvas 10 is in close contact with the close contact surface 41 of the frame 40. The roller 50 is on the side of the shoji 2 of the long hole 61. At this time, the roller 50 is positioned closer to the shoji 2 than the contact surface 41.

  The operation of the roll screen device of the present invention will be described with reference to FIGS.

  In the daylighting mode (FIG. 1), the canvas 10 is taken up by the upper winding roll 20 and the room is daylighted through the shoji 2. At this time, the wire 11 attached to the canvas 10 is in a state of being separated from the contact surface 41 of the frame 40.

  In the solar shading mode (FIGS. 2 and 3), the drive motor 31 that drives the lower winding roll 30 is operated by a switch (not shown). The lower winding roll 30 winds the campus 10 around the lower winding roll 30 against the biasing force of the torsion spring of the upper winding roll 20. At this time, the canvas 10 is separated from the contact surface 41 of the frame 40 by the urging force of the spring 70. The canvas 10 covers the surface of the shoji 2 and the winding of the canvas 10 onto the lower winding roll 30 is completed.

  In the heat retention mode (FIG. 4), after the winding of the canvas 10 to the lower winding roll 30 is finished, the drive motor 31 is operated to rotate the lower winding roll 30. The lower winding roll 30 slides the roller 50 toward the shoji 2 of the elongated hole 61 against the urging force of the spring 70 (FIG. 4). When the roller 50 slides toward the shoji 2 side of the long hole 61, the canvas 10 comes into close contact with the close contact surface 41 of the frame 40. At this time, a space 42 closed by the canvas 10, the shoji 2, and the frame 40 is formed.

  In the roll screen device 1 of the present invention, when the canvas 10 is wound or unwound, the canvas 10 is separated from the frame 40 by the roller 50 biased by the spring 70. Therefore, there is no sliding resistance between the canvas 10 and the frame 40. When the canvas 10 lowers the canvas 10 that covers the surface of the shoji 2 (sunlight shielding mode), the canvas 10 and the frame 40 are separated from each other by the urging force of the spring 70. Diffused light enters from between the canvas 10 and the frame 40, and a necessary amount of light can be secured. Further, since the canvas 10 is separated from the frame 40, ventilation can be taken from both the solar radiation side and the shoji 2 side. Heat is dissipated from both sides of the canvas 10 by convection by ventilation, and the temperature rise of the canvas 10 is suppressed. The upper take-up roll 20 or the lower take-up roll 30 rotates against the biasing force of the spring 70 after the canvas 10 covers the surface of the shoji 2 and the take-up of the canvas 10 is finished. The roller 50 is slid until it is in close contact with the frame 40. When the canvas 10 is in close contact with the frame 40, a closed space 42 is formed by the canvas 10, the shoji 2, and the frame 40, and this closed space 42 acts as a heat insulating space to obtain a heat retaining effect (heat retaining mode). . Further, since the winding force of the driving motor 31 of the lower winding roll 30 is used to slide the roller 50 until the canvas 10 is in close contact with the frame 40, a separate driving source is not required for sliding the roller 50, and the cost is reduced. Can be suppressed.

  Further, the spring 70 extends and contracts along the frame 40, one end is fixed to the frame 40, and the other end is connected to the roller 50 via the stainless wire 71, so that the canvas 10 is framed on the guide rail 60. Since the space (spring diameter, spring length, etc.) for providing the spring 70 for applying the elastic force to be separated from the roller 50 to the roller 50 is not required, the degree of freedom in designing the guide rail 60 is improved.

  Further, since the roller 50 is configured to slide toward the shoji 2 from the surface of the frame 40 where the canvas 10 is in close contact, the upper take-up roll 20 or the lower take-up roll 30 covers the surface of the shoji 2 and the canvas 10 After the winding of 10 is finished, the canvas 10 and the frame 40 can be securely adhered even if the roller 50 is slid against the biasing force of the spring 70 and the roller 50 is slid.

  FIG. 5 is a perspective view when the roll screen device 1 is attached to the opening / closing window 3 as a modification of the present embodiment. By attaching the roll screen device 1 to the open / close window 3, an open / close window integrated with the roll screen device that satisfies both the opening and closing of the window for ventilation and the purpose of blocking direct light with respect to the solar altitude and direction can be configured. Moreover, the clean design and the retrofit of the roll screen device 1 are possible.

  In the present embodiment, the lower winding roll 30 is driven by the driving motor 31, but the upper winding roll 20 may be driven. A manual gear may be used instead of the drive motor 31.

1 Roll screen device 2 Shoji 10 Canvas (screen)
20 Upper winding roll 30 Lower winding roll 40 Frame 41 surface (contact surface)
50 Roller 60 Guide rail 70 Spring (elastic body)
71 Stainless wire (connecting member)

Claims (3)

A screen that covers the surface of either side of the shoji,
An upper winding roll that is positioned above the shoji and winds or rewinds the screen;
A lower winding roll located at the lower part of the shoji, and rewinding or winding the screen in conjunction with the upper winding roll;
Between the upper winding roll and the lower winding roll, a frame extending in the width direction and the vertical direction so as to surround the shoji, and the screen is in close contact with each other,
A roller that is positioned between the upper winding roll and the lower winding roll at an upper portion and a lower portion of the shoji, and slides the screen in close contact with or away from the frame;
A guide rail that guides the slide of the roller so that the screen is in close contact with or separated from the frame;
An elastic body that urges the roller in a direction in which the screen is separated from the frame,
The upper winding roll or the lower winding roll rotates against the urging force of the elastic body after the screen covers the surface of the shoji and the winding of the screen is finished. A roll screen device that slides the roller until it is in close contact with the frame.   The roll screen device according to claim 1, wherein the elastic body expands and contracts along the frame, one end is fixed to the frame, and the other end is connected to the roller via a connecting member. .   3. The roll screen device according to claim 1, wherein the roller slides toward a shoji side from a surface of the frame to which the screen is in close contact.

Images