JP6367595B2 - blind - Google Patents

Description

  The present invention relates to a blind.

  Conventionally, there is a roll type blind having a dimming function. In Patent Document 1 below, two doughs are suspended from and supported by a winding cylinder supported rotatably with respect to a support frame, and a plurality of slats are vertically provided between the doughs. The bottom rail is suspended and supported at the lower ends of both fabrics, and the angle of each slat can be adjusted via the fabric by rotating the winding cylinder with the operating means provided on the support frame. A hoisting type blind in which a fabric and a slat can be wound around a hoisting cylinder is disclosed.

Japanese Patent Laid-Open No. 6-221066

  By the way, in this blind, the bottom rail is formed into a cylindrical shape from a main body that is curved so that the lower surface swells downward, and an fitting member that is fitted to the main body, and the fitting member is fitted to the main body. By doing so, the cloth is sandwiched between the main body and the fitting member. Therefore, the center of gravity of the bottom rail is located in the vicinity of the center of both fabrics when the slats are open due to its shape.

  Then, when the hoisting cylinder rotates in the hoisting direction, the fabric is pulled up by the hoisting cylinder and the slat tilts (toward the closing direction), and the bottom rail also tilts accordingly, the slat has the tilting direction of the bottom rail. Since the force in the opposite direction, that is, the force in the direction in which the two pieces of fabric are separated from each other acts, the slats are not completely closed until the two pieces of fabric come into contact with each other, and the shielding performance is reduced. There was a problem.

  In view of the circumstances as described above, an object of the present invention is to provide a blind capable of improving the shielding property.

  In order to achieve the above object, a blind according to an aspect of the present invention includes a first translucent sheet, a second translucent sheet, a support member, a plurality of louvers, an opening / closing mechanism, and a bottom rail. Have. The support member has one end of the first translucent sheet and one end of the second translucent sheet such that the first translucent sheet and the second translucent sheet are opposed to each other. Support in the first direction with an interval. The plurality of louvers are provided between the first translucent sheet and the second translucent sheet. The opening / closing mechanism changes the distance between the first light transmissive sheet and the second light transmissive sheet by relatively moving the first light transmissive sheet and the second light transmissive sheet in the first direction. By doing so, the plurality of louvers can be opened and closed. The bottom rail connects the other end of the first translucent sheet and the other end of the second translucent sheet at a second interval. The bottom rail has a protruding portion that protrudes in the first direction or the facing direction on the first translucent sheet side with respect to the center line that bisects the second interval, and the louver is open. The center of gravity is located on the first translucent sheet side of the center line.

  As a result, the blind has a louver by biasing the center of gravity of the bottom rail toward the first translucent sheet and projecting the projecting portion in the first direction or the opposing direction by the projecting portion provided on the bottom rail. In the state where the gap is closed, the center of gravity of the bottom rail is at a lower position, the pulling force acts on the first translucent sheet, and the bottom rail stands upright (vertical). Therefore, it is possible to improve the shielding property of the louver.

  The support member may include a winding pipe and a restricting portion. The winding pipe can wind up the first light-transmitting sheet and the second light-transmitting sheet in a state where the louver is closed. When the bottom rail moves to the support member side as the first translucent sheet and the translucent sheet are taken up by the take-up pipe, the restricting portion comes into contact with the projecting portion and Further winding of the first translucent sheet and the second translucent sheet is restricted.

  Thereby, the blind can prevent the bottom rail from being caught in the take-up pipe by bringing the protruding portion into contact with the restricting portion, and further, the first translucent sheet and the second translucent sheet can be prevented. It is possible to prevent so-called reverse winding that is wound up in the opposite direction to the original.

  The opening / closing mechanism moves the first translucent sheet in a direction away from the support member, and moves the second translucent sheet in a direction approaching the support member to close the gap between the louvers. Good. In this case, the support member may include a housing portion that houses at least a part of the bottom rail on the second light-transmissive sheet side in a state where the restricting portion is in contact with the protruding portion.

  Thereby, since the blind can accommodate the 2nd translucent sheet | seat side of a bottom rail in a support member in the state which the protrusion part contact | abutted to the control part, the 1st translucent sheet | seat and the 2nd translucent sheet | seat When the sheet is wound up to the limit, the exposure amount of the bottom rail can be minimized, and the appearance at the time of winding can be improved.

  The bottom rail is provided on the first surface, the first surface facing the louver in a state where the louver is open, the second surface facing the first surface, and the first translucent sheet. You may have a 1st connection part connected with the other end of this, and a 2nd connection part provided in the said 2nd surface and connected with the other end of the said 2nd translucent sheet | seat.

  As a result, in the blind, the first rail is connected to the first surface (upper surface) and the second light-transmitting sheet is connected to the second surface (lower surface) on the bottom rail. When closed, the second translucent sheet acts to pull up the second surface of the bottom rail and raise the bottom rail, so that the louver shielding property can be further improved.

  The protrusion may include a weight movable along the longitudinal direction of the bottom rail.

  As a result, the blind is pulled by pulling the first translucent sheet downward and closing the bottom rail when the louver is closed by moving the center of gravity of the bottom rail closer to the first translucent sheet by the weight built in the protrusion. It is possible to improve the shielding property between the louvers by raising the weight, and by allowing the weight to be moved along the longitudinal direction of the bottom rail, the left and right sides of the first light transmissive sheet and the second light transmissive sheet in the blind front view By adjusting the balance, winding disturbance during winding can be prevented.

  A blind according to another embodiment of the present invention includes a first light transmissive sheet, a second light transmissive sheet, a support member, a plurality of louvers, an opening / closing mechanism, and a bottom rail. The support member has one end of the first translucent sheet and one end of the second translucent sheet such that the first translucent sheet and the second translucent sheet are opposed to each other. Support in the first direction with an interval. The plurality of louvers are provided between the first translucent sheet and the second translucent sheet. The opening / closing mechanism changes the distance between the first light transmissive sheet and the second light transmissive sheet by relatively moving the first light transmissive sheet and the second light transmissive sheet in the first direction. By doing so, the plurality of louvers can be opened and closed. The bottom rail connects the other end of the first translucent sheet and the other end of the second translucent sheet at a second interval. Further, the bottom rail has a protruding portion that protrudes in the first direction on the first translucent sheet side from a center line that bisects the second interval. The support member further includes a take-up pipe and a restricting portion. The winding pipe can wind up the first light-transmitting sheet and the second light-transmitting sheet in a state where the louver is closed. When the bottom rail moves to the support member side as the first translucent sheet and the translucent sheet are taken up by the take-up pipe, the restricting portion comes into contact with the projecting portion and Further winding of the first translucent sheet and the second translucent sheet is restricted.

  As a result, the blind has a position where the center of gravity of the bottom rail is lower in a state where the louver is closed by biasing the center of gravity of the bottom rail toward the first light-transmissive sheet side by the protrusion provided on the bottom rail. Thus, a force pulling downward acts on the first translucent sheet, and the bottom rail is intended to maintain an upright (vertical) posture, so that the shielding property of the louver can be improved. Furthermore, the blind can prevent the bottom rail from being caught in the take-up pipe by bringing the protruding portion into contact with the restricting portion, and further, the first light-transmitting sheet and the second light-transmitting sheet are originally provided. It is possible to prevent so-called reverse winding that is wound up in the opposite direction.

  As described above, according to the present invention, the shielding property can be improved. However, this effect does not limit the present invention.

It is a front view of the blind which concerns on 1st Embodiment of this invention. It is a side view which shows the state by which the louvers of the said blind were open | released. It is sectional drawing of the blind shown in FIG. It is an expanded sectional view of the bottom rail shown in FIG. It is sectional drawing which showed the state which wound down the sheet | seat of the blind shown in FIG. 3 to the minimum, and obstruct | occluded between louvers. It is sectional drawing which showed the state which wound up the sheet | seat of the blind shown in FIG. 3 to the upper limit. It is sectional drawing of the side surface direction of the lower part of the blind which concerns on 2nd Embodiment of this invention. It is sectional drawing which showed the state which the louver of the blind shown in FIG. 7 obstruct | occluded. It is the figure which showed the modification of the protrusion part of a bottom rail.

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

<First Embodiment>
First, the blind according to the first embodiment of the present invention will be described.

[Blind configuration]
FIG. 1 is a front view of a blind according to the present embodiment. FIG. 2 is a side view showing a state where the louvers between the blinds are opened. FIG. 3 is a cross-sectional view of the blind shown in FIG. 4 is an enlarged cross-sectional view of the bottom rail shown in FIG.

  As shown in these drawings, the blind 100 includes a support member 1, a front seat 2, a rear seat 3, a plurality of louvers 4, and a bottom rail 5.

  The front sheet 2 and the rear sheet 3 are translucent or translucent sheets such as races having translucency, and their upper ends are spaced apart from each other by a support member 1 at a predetermined interval (D1 in FIG. 3) in the Y direction. Supported by Here, “front” is the front side in the Z direction in FIG. 1 (left side in FIGS. 2 and 3), and “rear” is the back side in the Z direction in FIG. 1 (right side in FIGS. 2 and 3). is there.

  A plurality of louvers 4 are provided between the front seat 2 and the rear seat 3 at intervals along the Y direction. The method of connecting the front seat 2 and the rear seat 3 to each louver 4 may be adhesion or sewing.

  Each louver 4 is a sheet made of an arbitrary material such as a woven fabric, a knitted fabric, a nonwoven fabric, a paper sheet, a synthetic resin sheet, or a wood sheet made of synthetic resin fibers or natural fibers. Each louver 4 may have flexibility.

  As shown in FIGS. 1 to 3, the front seat 2 and the rear seat 3 are separated by the predetermined distance, and the louvers 4 are substantially orthogonal to the front seat 2 and the rear seat 3 (on the XZ plane). In this case, the space between adjacent louvers 4 is open. In this open state, light from the outside such as solar radiation is transmitted through the rear seat 3, reflected by the louver 4, transmitted through the front seat 2, or light transmitted through the rear seat 3 is directly transmitted to the front seat 2. And penetrate into the room.

  On the other hand, when the front seat 2 and the rear seat 3 are close to each other and each louver 4 is in a state substantially parallel to the front seat 2 and the rear seat 3, the space between the adjacent louvers 4 is closed. In this closed state, the light from the outside passes through the rear seat 3 but is blocked by the louver 4 in the closed state.

  As shown in FIG. 3, the support member 1 has a set frame 13. The blind 100 is installed by fixing the set frame 13 to a window frame, a wall or the like with a screw or the like via a bracket 12 (see FIG. 3) provided on the rear side (rear seat 3 side). As shown in FIGS. 1 and 2, a side cover 11 is provided on the side surface of the support member 1.

  Moreover, as shown in FIG. 3, the supporting member 1 holds the winding pipe 14 rotatably inside. A pulley (not shown) is provided at one end of the winding pipe 14, and the pulley is rotationally driven by an operation cord 8 (see FIGS. 1 and 2) wound around the pulley, and this rotation is transmitted to the winding pipe 14. Is done. The pulley is accommodated in a pulley case 7 (see FIGS. 1 and 2).

  The pulley, the operation cord 8 and the winding pipe 14 are used for winding (up) and lowering (down) the front seat 2 and the rear seat 3, and the front seat 2 and the rear seat 3 are wound down. In, it functions as an opening / closing mechanism that switches between an open state and a closed state between the louvers 4.

(Bottom rail)
As shown in FIGS. 1 to 4, a bottom rail 5 is connected to each lower end of the front seat 2 and the rear seat 3.

  As shown in FIG. 2, bottom rail caps 21 are connected to both side surfaces of the bottom rail 5. Further, as shown in FIGS. 2 to 4, on the lower surface 5 b of the bottom rail 5, a protruding portion 20 that protrudes in the Y direction and the Z direction is provided on the front seat 2 side.

  As shown in FIGS. 3 and 4, the bottom rail 5 connects the lower end of the front seat 2 and the lower end of the rear seat 3 with a predetermined interval (D2 in both figures).

  As shown in FIG. 4, the protrusion 20 is formed on the front seat 2 side with respect to the center line C that bisects the distance D2. Due to the shape, the protrusion 20 has a center of gravity on the front seat 2 side with respect to the center line C in a state where the louvers 4 are open (the bottom rail 5 is substantially parallel to the XZ plane).

  The bottom rail 5 has an upper surface 5a that faces the louver 4 in a state where the louver 4 is open, and a lower surface 5b that faces the upper surface 5a. Attaching both seats by connecting the lower end of the front seat 2 and the lower end of the rear seat 3 respectively to the front and rear end portions (left and right end portions in the Z direction) of the upper surface 5a of the bottom rail 5 A portion 22 is provided.

  The attachment portion 22 is formed, for example, as an inverted T-shaped groove, and an attachment plate 23 in which the lower end of the front seat 2 and the lower end of the rear seat 3 are connected to the bottom surface side is inserted into the groove.

  Moreover, the inside of the protrusion part 20 is made into the cavity, and the weight 24 is incorporated in the cavity. The weight 24 is movable in the longitudinal direction (X direction) of the bottom rail 5.

  As the weight 24, for example, one long one having a size shorter than the size of the bottom rail 5 in the longitudinal direction is provided.

  The weight 24 adjusts the balance of the front seat 2 and the rear seat 3 in the X direction (left and right direction in FIG. 1) to prevent winding disturbance during winding, and in combination with the shape of the protruding portion 20. The center of gravity of the bottom rail 5 is biased toward the front seat 2 side.

  As shown in FIGS. 2 and 3, a cushioning material 15 made of, for example, an elastic body is provided behind the support member 1 and below the bracket 12. The cushioning material 15 abuts against the protruding portion 20 of the bottom rail 5 when the front rail 2 and the rear seat 3 are wound by the winding pipe 14 when the bottom rail 5 moves to the support member 1 side. That is, the cushioning material 15 functions as a restricting portion (stopper) that restricts further winding of the front seat 2 and the rear seat 3.

  Further, between the take-up pipe 14 and the bracket 12 in the support member 1, the back cushion 3 side of the bottom rail 5 is in a state in which the cushioning material 15 is in contact with the protruding portion 20 during the take-up. The bottom rail accommodating part 16 which accommodates at least one part (part which does not contact | abut the shock absorbing material 15) is provided.

[Blind operation]
Next, the operation of the blind 100 configured as described above will be described.

(Louver opening and closing operation)
First, the opening / closing operation of the louver 4 will be described. FIG. 5 is a cross-sectional view showing a state in which the front seat 2 and the rear seat 3 of the blind 100 shown in FIG.

  In a state where the front seat 2 and the rear seat 3 are all lowered, the front seat 2 and the rear seat 3 are relatively moved in the Y direction by the rotation of the winding pipe 14, and the interval between the two seats is changed. The open state and open / close state of the louver 4 can be switched.

  That is, as shown in FIGS. 3 and 5, from the state shown in FIG. 3, for example, when the front side of the operation cord 8 is pulled down and the winding pipe 14 rotates in the counterclockwise direction in FIG. 2 moves away from the support member 1 and the rear seat 3 approaches the support member 1, and the position of the rear seat 3 becomes higher than the front seat 2, and the louver 4 moves in the XY plane direction (FIG. 5). (In the direction of the arrow), the louver 4 is closed as shown in FIG.

  At this time, the center of gravity of the bottom rail 5 is biased toward the front seat 2 by the protrusion 20 provided on the bottom rail 5, and the protrusion 20 is not only in the Z direction in FIG. 5 but also in the Y direction (downward). Furthermore, the center of gravity of the bottom rail 5 is at a lower position in the closed state between the louvers 4. Accordingly, the pulling force acts downward on the front seat 2 and the bottom rail is erected (vertical) so that the front seat 2, the louver 4 and the rear seat 3 are easily overlapped with each other. The shielding property by 4 is improved.

  On the other hand, from the state shown in FIG. 5, for example, when the rear side of the operation cord 8 is pulled down and the winding pipe 14 rotates in the clockwise direction, the height of the front seat 2 and the height of the rear seat 3 are equal. As the louver 4 is tilted in the XZ plane direction, the louver 4 is opened as shown in FIG.

  At this time, due to the load of the protruding portion 20 (and the weight 24), the flat feeling of the front seat 2 is increased and the appearance is improved for the user who views the blind 100 from the front.

(Sheet winding operation)
Next, the winding operation of the front seat 2 and the rear seat 3 will be described.

  FIG. 6 is a cross-sectional view showing a state where the front seat 2 and the rear seat 3 of the blind 100 shown in FIG. 3 are wound up to the upper limit.

  As shown in FIGS. 5 and 6, for example, when the front side of the operation cord 8 is pulled down from the closed state of the louver 4 shown in FIG. 5, the winding pipe 14 rotates counterclockwise in FIG. 5. Then, the front seat 2 and the rear seat 3 are wound up to the support member 1 side (upward in the Y direction) and ascend.

  At this time, as shown in FIG. 6, when all of the front seat 2 and the rear seat 3 are wound up, the side surfaces of the protrusions 20 of the bottom rail 5 abut against the cushioning material 15, and the front seat 2, the rear seat 3, and Further winding of the bottom rail 5 is restricted.

  As a result, the bottom rail 5 is prevented from being wound around the take-up pipe 14, and so-called reverse winding, in which the front seat 2 and the rear seat 3 are wound up in the opposite direction, is also prevented.

  As shown in FIG. 6, simultaneously with the contact, the rear seat 3 side of the bottom rail 5 (the portion where the protruding portion 20 is not formed) is accommodated in the bottom rail accommodating portion 16 of the support member 1.

  Thereby, when the front seat 2 and the rear seat 3 are wound up to the upper limit, the exposure amount of the bottom rail 5 is suppressed to the minimum, so that the appearance is improved. That is, the protruding portion 20 of the bottom rail 5 serves both as a function of improving the shielding property of the louver 4 and as a stopper, so that the appearance of the bottom rail 5 is improved without unnecessarily increasing the shape of the bottom rail 5.

  On the other hand, from the state in which the front seat 2 and the rear seat 3 are all wound up, for example, the rear side of the operation cord 8 is pulled down, so that the winding pipe 14 rotates in the clockwise direction in FIGS. The front seat 2 and the front seat 2 are lowered and lowered.

  Also in this case, the closed state of the louver 4 is maintained unless the operation cord 8 is further pulled down by the load of the protruding portion 20 (and the weight 24).

  As described above, according to the present embodiment, the blind 100 can improve the shielding performance when the louver 4 is closed by the protruding portion 20 (and the weight 24) provided on the bottom rail 5.

Second Embodiment
Next, a blind according to a second embodiment of the present invention will be described. In the present embodiment, portions common to the first embodiment are denoted by the same reference numerals, and description thereof is omitted or simplified.

  FIG. 7 is a cross-sectional view in the lower side surface direction showing the blind according to the present embodiment in a state where the louver is opened. FIG. 8 is a cross-sectional view showing a state where the blind louver shown in FIG. 7 is closed.

  In the blind 200 according to the present embodiment, the positions at which the front seat 2 and the rear seat 3 are attached to the bottom rail 5 are different from those in the first embodiment.

  That is, in the first embodiment, since the two attachment portions 22 are both provided on the upper surface 5a of the bottom rail 5, the front seat 2 and the rear seat 3 are both attached to the upper surface 5a of the bottom rail.

  However, in the blind 200 according to the present embodiment, as shown in FIG. 7, the attachment portion 22 and the attachment plate 23 for attaching the lower end of the front seat 2 are provided on the upper surface 5 a of the bottom rail 5, while the rear seat 3 A mounting portion 22 and a mounting plate 23 for mounting the lower end are provided on the lower surface 5 b of the bottom rail 5. In other words, the rear seat 3 is provided so as to hold the rear end portion of the lower surface 5b of the bottom rail 5 from below.

  Thus, the front seat 2 is connected to the upper surface 5a of the bottom rail 5 and the rear seat 3 is connected to the lower surface 5b of the bottom rail 5, so that the louver 4 shown in FIG. When the rear seat 3 rises due to the rotation and the louver 4 shifts to the closed state, the force (see the arrow in FIG. 7) of the rear seat 3 pulling up the bottom rail 5 acts on the lower surface 5b side of the bottom rail 5, As shown in FIG. 8, the bottom rail 5 is erected vertically. Thereby, the shielding property of the louver 4 is further improved.

<Modification>
The present technology is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present technology.

  The structure of the bottom rail 5 and the protrusion part 20 is not restricted to the structure in each embodiment mentioned above.

  For example, in the above-described embodiment, the protrusion 20 protrudes from the lower surface 5b of the bottom rail 5 (in the Y direction in FIG. 4) and protrudes from the side surface of the bottom rail 5 (in the Z direction in FIG. 4). However, it may protrude only in one direction.

  FIG. 9 shows a modification of the protruding portion 20 protruding from the lower surface 5 b of the bottom rail 5. In the figure, for convenience of explanation, the front seat 2, the rear seat 3, and the two attachment plates 23 are omitted, but the left side of the figure is the front seat 2 side, and the right side of the figure is the rear seat 3 side.

  The point that the front seat 2 is attached to the attachment portion 22 of the upper surface 5a of the bottom rail 5 and the rear seat 3 is attached to the attachment portion 22 of the lower surface 5b of the bottom rail 5 is the same as in the second embodiment.

  As shown in the figure, in this example, the projecting portion 20 has a substantially D-shaped cross section, and the height in the Y direction is set to be larger than the projecting portion 20 of the first and second embodiments. . Thereby, even if the thickness of the front sheet 2 and the rear sheet 3 in the winding state by the winding pipe 14 in the radial direction of the winding pipe 14 changes according to the size of the blind in the Y direction, the protrusion 20 is buffered. It can abut on the material 15 appropriately.

  Further, the weight 24 is larger in the height direction and smaller in the width direction than those in the first and second embodiments, and is provided on the upper surface 5a side of the bottom rail 5 and slightly closer to the center. ing.

  Moreover, the protrusion part 20 may be formed from materials, such as an elastic body which functions as a shock absorbing material. In this case, the buffer member 15 may not be provided on the support member 1.

  Moreover, the protrusion part 20 may change the protrusion degree in the Y direction (Z direction of FIG. 6) of FIGS. 2-3, according to the length of the front seat 2 and the back seat 3 in the Y direction.

  That is, when the same member is used as the support member 1 regardless of the length of the front seat 2 and the rear seat 3 in the Y direction, the winding of the front seat 2 and the rear seat 3 in the winding state by the winding pipe 14 is performed. The thickness of the pipe 14 in the radial direction changes. Therefore, the height of the protrusion 20 in the Z direction in FIG. 6 may be adjusted so that the protrusion 20 appropriately contacts the cushioning material 15 according to the thickness.

  Further, in place of or in addition to the height adjustment of the protrusion 20, the position of the cushioning material 15 provided on the support member 1 according to the radial thickness in the wound state is Z in FIG. It may be changed in direction.

  In the above-described embodiment, one long one is provided as the weight 24 built in the protruding portion 20, but the weight 24 can be moved 2 at the left and right ends in the X direction of the bottom rail 5, for example. May be provided, or may be provided so as to be movable not only at the left and right ends but also near the center (ie, three or more). Thereby, the balance adjustment in the front view left-right direction (X direction) of the front seat 2 and the rear seat 3 becomes easy.

DESCRIPTION OF SYMBOLS 1 ... Support member 2 ... Front seat 3 ... Back seat 4 ... Louver 5 ... Bottom rail 5a ... Upper surface 5b ... Lower surface 8 ... Operation cord 14 ... Winding pipe 15 ... Buffer material 16 ... Bottom rail accommodating part 20 ... Protrusion part 22 ... Mounting part 24 ... Weight 100, 200 ... Blind

Claims (5)

A first translucent sheet;
A second translucent sheet;
One end of the first translucent sheet and one end of the second translucent sheet are spaced apart from each other such that the first translucent sheet and the second translucent sheet are opposed to each other. A support member for supporting in the first direction;
A plurality of louvers provided between the first translucent sheet and the second translucent sheet;
The first translucent sheet and the second translucent sheet are moved relative to each other in the first direction to change the interval between the first translucent sheet and the second translucent sheet. An opening and closing mechanism that can open and close between the louvers,
A bottom rail that connects the other end of the second translucent sheet and the other end of the first translucent sheet at a second distance, wherein the center line bisecting the second distance The first translucent sheet has a projecting portion projecting in the first direction or the opposing direction, and the center of gravity is located closer to the first translucent sheet than the center line in a state where the louvers are open. Having a bottom rail ,
The support member is
A winding pipe capable of winding the first light-transmitting sheet and the second light-transmitting sheet in a state where the louver is closed;
When the bottom rail moves toward the support member as the first translucent sheet and the second translucent sheet are taken up by the take-up pipe, the first translucent sheet comes into contact with the protrusion. And a restricting portion that restricts further winding of the light-sensitive sheet and the second light-transmissive sheet.
blind. The blind according to claim 1,
The opening / closing mechanism moves the first translucent sheet in a direction away from the support member, and closes the louver by moving the second translucent sheet in a direction approaching the support member,
The support member includes a housing portion that houses at least a part of the bottom rail on the second translucent sheet side in a state where the restricting portion is in contact with the protruding portion. A first translucent sheet;
A second translucent sheet;
One end of the first translucent sheet and one end of the second translucent sheet are spaced apart from each other such that the first translucent sheet and the second translucent sheet are opposed to each other. A support member for supporting in the first direction;
A plurality of louvers provided between the first translucent sheet and the second translucent sheet;
The first translucent sheet and the second translucent sheet are moved relative to each other in the first direction to change the interval between the first translucent sheet and the second translucent sheet. An opening and closing mechanism that can open and close between the louvers,
A bottom rail that connects the other end of the first light-transmitting sheet and the other end of the second light-transmitting sheet with a second interval, and is more than the center line that bisects the second interval. A projecting portion projecting in the first direction or the opposing direction on the one translucent sheet side, and having a center of gravity on the first translucent sheet side with respect to the center line in a state where the louvers are open With bottom rail
Comprising
The bottom rail is provided on the first surface, the first surface facing the louver in a state where the louver is open, the second surface facing the first surface, and the first translucent sheet. A blind comprising: a first connection portion connected to the other end of the second connection portion; and a second connection portion provided on the second surface and connected to the other end of the second translucent sheet. A first translucent sheet;
A second translucent sheet;
One end of the first translucent sheet and one end of the second translucent sheet are spaced apart from each other such that the first translucent sheet and the second translucent sheet are opposed to each other. A support member for supporting in the first direction;
A plurality of louvers provided between the first translucent sheet and the second translucent sheet;
The first translucent sheet and the second translucent sheet are moved relative to each other in the first direction to change the interval between the first translucent sheet and the second translucent sheet. An opening and closing mechanism that can open and close between the louvers,
A bottom rail that connects the other end of the first light-transmitting sheet and the other end of the second light-transmitting sheet with a second interval, and is more than the center line that bisects the second interval. A projecting portion projecting in the first direction or the opposing direction on the one translucent sheet side, and having a center of gravity on the first translucent sheet side with respect to the center line in a state where the louvers are open With bottom rail
Comprising
The projection is a blind incorporating a weight movable along a longitudinal direction of the bottom rail. A first translucent sheet;
A second translucent sheet;
One end of the first translucent sheet and one end of the second translucent sheet are spaced apart from each other such that the first translucent sheet and the second translucent sheet are opposed to each other. A support member for supporting in the first direction;
A plurality of louvers provided between the first translucent sheet and the second translucent sheet;
The first translucent sheet and the second translucent sheet are moved relative to each other in the first direction to change the interval between the first translucent sheet and the second translucent sheet. An opening and closing mechanism that can open and close between the louvers,
A bottom rail that connects the other end of the first light-transmitting sheet and the other end of the second light-transmitting sheet with a second interval, and is more than the center line that bisects the second interval. A bottom rail having a projecting portion projecting in the first direction on the side of the one translucent sheet;
The support member is
A winding pipe capable of winding the first light-transmitting sheet and the second light-transmitting sheet in a state where the louver is closed;
When the bottom rail moves toward the support member as the first translucent sheet and the second translucent sheet are taken up by the take-up pipe, the first translucent sheet comes into contact with the protrusion. A blind having a light-sensitive sheet and a restricting portion for restricting further winding of the second light-transmissive sheet.