JP2015124531A - Blind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blind capable of improving heat insulation performance at lower cost.SOLUTION: The blind comprises a first screen 13 formed in the vertical direction so that a plurality of pleats 131 can be folded up and expanded, a second screen 14 arranged in the rear of the first screen and formed in the vertical direction so that a plurality of pleats 141 can be folded up and expanded, a rail 15 for fixing the lower end of the first screen and the second screen and a lifting cord 16 for suspendibly supporting the rail, and the first screen is formed with an insertion hole 131a for inserting the lifting cord in the apex vicinity of a projection part of projecting backward, and the second screen is formed with an insertion hole 141a for inserting the lifting cord in the apex vicinity of a projection part of projecting forward.

Description

  The present invention relates to a blind provided with a screen in which a plurality of pleats are formed so as to be folded and unfolded in the vertical direction.

  2. Description of the Related Art Conventionally, a blind in which a space (cell portion) is formed between two screens by arranging two screens each having a plurality of pleats arranged in the vertical direction is known. According to such a blind, an air layer is formed between the front and rear of the screen by the plurality of cell portions that are continuous in the vertical direction, and the heat insulation performance by the blind can be enhanced.

  In addition, as such a blind, a peak portion on one side of the pleat is continuously bonded in a longitudinal direction with a predetermined width to provide a rib portion to form a pleated molded body, and a guide hole is provided at a common position of the rib portion. A pleat screen is known in which a pleated molded body is suspended so as to extend and contract by passing a lifting or supporting cord through these guide holes (see Patent Document 1).

Japanese Patent Laid-Open No. 2-197684

  However, according to the pleated screen described in Patent Document 1, there is a problem that the number of processing steps is increased and the cost is increased by providing rib portions on the front and rear screens over the entire length in the longitudinal direction.

  Therefore, the present invention has been made in view of such problems, and an object of the present invention is to provide a blind capable of improving heat insulation performance at a lower cost.

  In order to solve the above-described problem, the blind according to the present embodiment includes a first screen in which a plurality of pleats are formed in a vertical direction so that they can be folded and unfolded, and a rear of the first screen, and the plurality of pleats are folded. And a second screen formed in a vertically extending manner, a rail for fixing the first screen and a lower end of the second screen, and an elevating cord for supporting the rail so as to be suspended. The screen has an insertion hole through which the lifting / lowering cord is inserted in the vicinity of the apex of the protruding portion protruding backward, and the second screen has an insertion hole through which the lifting / lowering code is inserted in the vicinity of the apex of the protruding portion protruding forward. It is characterized by that.

  According to the present invention, the heat insulation performance can be improved at a lower cost.

It is a front view of the blind which concerns on 1st Embodiment. It is a sectional side view of the blind which concerns on 1st Embodiment. It is sectional drawing which shows the structure of a 1st screen and a 2nd screen. It is sectional drawing which shows the structure of a 1st screen, a 2nd screen, and a raising / lowering cord. It is a side surface schematic diagram which shows the state which expand | deployed the screen. It is a side surface schematic diagram which shows the state which folded up a part of screen. It is a sectional side view which shows the structure of the 1st screen of a blind which concerns on 2nd Embodiment, a 2nd screen, and a raising / lowering cord. It is a sectional side view which shows the structure of the 1st screen of a blind which concerns on 3rd Embodiment, a 2nd screen, and a raising / lowering cord.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, in this specification and drawing, about the component which has the substantially the same function, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

<First Embodiment>
(Blind configuration)
First, the configuration of the blind according to the first embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a front view of a blind according to the first embodiment. FIG. 2 is a side sectional view of the blind according to the first embodiment. In the following description, when the longitudinal direction of the blind is viewed from the side and the blind is viewed from the side, the pitch code side with respect to the lifting / lowering cord is described as the rear, and vice versa.

  As shown in FIGS. 1 and 2, the blind 1 according to the first embodiment is configured in a single stage using two front and rear screens, and includes a bracket 11, a head box 12, a first screen 13, and a second screen. 14, a bottom rail 15, a lifting / lowering cord 16, a pitch cord 17, and a driving device 19.

  The head box 12 is a long box-shaped member. A pitch code fixing portion 12a for fixing the upper end of the pitch code 17 is formed on the lower rear side of the outer wall of the head box 12, and a driving device 19 is built therein. The Further, the head box 12 includes a fixing member 121 having an insertion hole 121a through which the lifting / lowering cord 16 is inserted on the lower surface thereof. The fixing member 121 is connected to the first screen 13 and the second screen 14 using a staple or the like. Then, by inserting the fixing member 121 into the mounting space below the head box 12, the upper ends of the first screen 13 and the second screen 14 are connected to the lower portion of the head box 12 over the entire length in the longitudinal direction. In this connection, the upper end of the first screen 13 is connected to the front side of the head box 12, and the upper end of the second screen 14 is connected to the rear side. The head box 12 is attached to a bracket 11 whose upper part is a member for fixing the blind 1 to the window frame.

  The first screen 13 includes a plurality of pleats 131 connected in a vertically foldable / expandable manner, and each of the plurality of pleats 131 has an insertion hole 131a through which the lifting / lowering cord 16 is inserted.

  The second screen 14 is formed by connecting a plurality of pleats 141 so that the pleats 141 can be folded and unfolded in the vertical direction. Each of the plurality of pleats 141 is formed with an insertion hole 141a through which the elevating cord 16 is inserted. The pitch of each of the plurality of pleats 141 is the same as that of each of the plurality of pleats 131 of the first screen 13.

  The bottom rail 15 is a long rectangular parallelepiped member, and includes a fixing member 151 provided on the upper surface side thereof and a cord holder 152 provided therein. The fixing member 151 is formed with an insertion hole 151a through which the lifting / lowering cord 16 is inserted. On the front side, the lower ends of the first screen 13 and the second screen 14 are connected to the fixing member 151 using a staple or the like. By inserting 151 into the mounting space above the bottom rail 15, the lower ends of the first screen 13 and the second screen 14 are connected to the top of the bottom rail 15 over the entire length in the longitudinal direction. Thus, the head box 12 and the bottom rail 15 are connected by the first screen 13 and the second screen 14. In this connection, the lower end of the first screen 13 is connected to the front side of the bottom rail 15, and the lower end of the second screen 14 is connected to the rear side.

  One end of the lifting / lowering cord 16 is connected to the driving device 19 in the head box 12 and the other end is suspended from the head box 12 through the insertion hole 121a, and then inserted into the insertion holes 131a of the pleats 131 of the first screen 13. The pleat insertion holes 141a of the second screen 14 are alternately inserted, and the insertion holes 151a of the fixing member 151 of the bottom rail 15 are sequentially inserted from the upper side to the lower side to be connected to the cord holder 152 of the bottom rail 15. Is done. By this connection, the bottom rail 15 is supported by the lifting / lowering cord 16 so as to be lifted and lowered.

  The pitch cord 17 includes a plurality of loop cords 171 and is disposed between the head box 12 and the bottom rail 15. Each of the plurality of loop cords 171 has a one-to-one correspondence with each of the pleats 141 of the second screen 14, and connects the pitch cord 17 and the lifting / lowering cord 16. In addition, each of the plurality of loop cords 171 is provided so that adjacent loop cords 171 are held at the same pitch, whereby the pitch between the plurality of pleats 141 when the second screen 14 is unfolded is equal. Retained. Further, according to the holding of the pitch, the pitch between the plurality of pleats 131 when the first screen 13 is unfolded is also held. This point will be described in detail later.

  The drive device 19 includes a rotating shaft 191, a winding drum 192, a stopper 193, a brake 194, a control unit 195, a pulley 196, and an operation chain 197.

  Each of the rotation shafts 191 is provided approximately at the center in the front-rear direction in the head box 12. The winding drum 192 is penetrated by the rotating shaft 191 so as to be integrally rotatable. In addition, one end of a lifting / lowering cord 16 introduced into the head box 12 is connected to the winding drum 192. Further, the bottom rail 15 is moved up and down by the connected lifting and lowering cord 16 being wound or unwound on the winding drum 192.

  The stopper 193 is provided on the rotating shaft 191 and restrains this rotation. The brake 194 is provided on the rotating shaft 191 and decelerates this rotation.

  The control unit 195 is provided near one end of the head box 12 and transmits the rotational force transmitted by the pulley 196 to the rotating shaft 191 in accordance with the operation of the operation chain 197. The pulley 196 transmits a rotational force to the rotary shaft 191 via the control unit 195. The operation chain 197 is an operation unit that is wound around the pulley 196 and is suspended from the head box 12 to operate the rotational drive of the pulley 196.

(Screen configuration)
Next, details of the configurations of the first screen, the second screen, and the lifting / lowering cord will be described. FIG. 3 is a cross-sectional view showing the configuration of the first screen and the second screen. FIG. 4 is a cross-sectional view showing configurations of the first screen, the second screen, and the lifting / lowering cord.

  As shown in FIG. 3, the insertion hole 131 a of the first screen 13 is a rear portion of the plurality of protrusions that alternately protrude forward and backward on the first screen 13, that is, a protrusion that protrudes toward the second screen 14. Formed near the apex. More specifically, as shown in FIG. 4, each of the plurality of pleats 131 of the first screen 13 is inserted into a piece so that the lifting / lowering cord 16 is inserted through a position away from the apex of the protruding portion on the rear side by a predetermined distance. On the other hand, one insertion hole 131a is formed at the end in the vertical direction.

  In addition, the insertion hole 141 a of the second screen 14 is formed in the vicinity of the apex of the protruding portion protruding to the front side, that is, the first screen 13 side among the plurality of protruding portions protruding forward and backward in the second screen 14. More specifically, at the end in the vertical direction with respect to one piece of each of the plurality of pleats 141 of the second screen 14 so that the lifting / lowering cord 16 is inserted through a position separated by a predetermined distance from the apex of the protrusion on the front side. One insertion hole 141a is formed. Here, the distance from the apex of the protrusion on the front side to the insertion hole 141a is the same as the distance from the apex of the protrusion protruding rearward on the first screen 13 to the insertion hole 131a.

  In addition, the first screen 13 and the second screen 14 are formed so that the protruding portion of the first screen 13 in which the insertion hole 131a is formed is part of the protruding portion of the second screen 14 in which the insertion hole 141a is formed. They are arranged in a positional relationship such that a part of them overlaps directly above. Further, the loop cord 171 is formed at a portion exposed to the rear side when the first screen 13 and the second screen 14 are expanded with respect to the lifting / lowering cord 16, that is, at the same protruding portion of the second screen 14. It is connected between the two insertion holes 141a. Thereby, the pitch between the protrusion parts of the 2nd screen 14 in which penetration hole 141a is formed is maintained. Therefore, in the blind 1, the pitch code 17 maintains the pitch between the plurality of pleats 141 of the second screen 14, so that the plurality of first screens 13 that overlap directly above a part of the protruding portion of the second screen 14. The pitch between the pleats 131 is maintained. That is, it is not necessary to provide means for individually maintaining the pitch for the first screen 13 and the second screen 14. Further, with this configuration, a cell portion is formed between the pleat 131 protruding forward of the first screen 13 and the pleat 141 protruding rearward of the second screen 14 in the unfolded state of the blind 1. .

(Blind operation)
Next, the operation of the blind according to the first embodiment will be described with reference to FIGS. FIG. 5 is a schematic side view showing a state where the screen is developed. FIG. 6 is a schematic side view showing a state in which a part of the screen is folded.

  The state shown in FIG. 5 is a state in which the bottom rail 15 is lowered and the first screen 13 and the second screen 14 are developed. When the first screen 13 and the second screen 14 are folded from such a state, the winding drum 192 winds the lifting / lowering cord 16 by operating the operation chain 197 and rotating the rotary shaft 191 in a predetermined direction. The bottom rail 15 connected to the lifting / lowering cord 16 rises. As the bottom rail 15 rises, the first screen 13 and the second screen 14 are folded from below as shown in FIG.

  As described above, according to the blind 1 according to the first embodiment, a cell portion is formed between the first screen 13 and the second screen 14 in an unfolded state, and an air layer in the cell portion is formed. The heat insulating property can be improved. Moreover, in producing the blind 1, the first screen 13 and the second screen 14 can be diverted by changing the position of the insertion hole of the screen used in the conventional pleated screen, and the conventional cell portion can be used. Cost can be reduced compared to the blind to be formed. Further, in the folded state, the thickness of the folding allowance of the first screen 13 and the second screen 14 is the same on the front side and the rear side, and the design characteristics when viewed from the side are not impaired. Moreover, the design of the blind 1 can be easily changed by changing the combination of materials, colors, and the like between the first screen 13 and the second screen 14.

<Second Embodiment>
The blind according to the second embodiment differs from the blind according to the first embodiment in the pitch between pleats. Hereinafter, the configuration of the blind according to the second embodiment, which is different from the blind according to the first embodiment, will be described. FIG. 7 is a side sectional view showing the configuration of the first screen, the second screen, and the lifting / lowering cord of the blind according to the second embodiment.

  As shown in FIG. 7, in the blind 2 according to the second embodiment, instead of the second screen 14 having the same pleat pitch as the first screen 13, the pitch of the pleats 241 is smaller than that of the first screen 13. The point which uses 2 screens 24 differs from the blind 1 which concerns on 1st Embodiment. By using such a second screen 24, the cell portion is made heat resistant even when a large pitch is adopted as the first screen 13 because of the necessity of design when the blind 2 is viewed from the front. Therefore, it is possible to achieve both design and heat insulation properties. Further, since the pitch of the pleats 241 of the second screen 24 arranged on the rear side is small, even if the pleat opening angle of each pleat 241 of the second screen is increased when the blind 2 is unfolded, the first screen 13 Since the pleat opening angle of each pleat 131 is equal to or less than that of the second screen, the pleating opening angle is suppressed, so that the pitch code 17 can be eliminated. The insertion hole 241a of the second screen 24 is, like the insertion hole 141a of the second screen 14, of the plurality of protrusions protruding forward and backward on the second screen 24, on the front side, that is, on the first screen 13 side. It is formed near the apex of the protruding portion that protrudes.

<Third Embodiment>
The blind according to the third embodiment is different in the configuration of the first screen from the blind according to the first embodiment. Hereinafter, the configuration of the blind according to the third embodiment, which is different from the blind according to the first embodiment, will be described. FIG. 8 is a side sectional view showing the configurations of the first screen, the second screen, and the lifting / lowering cord of the blind according to the third embodiment.

  As shown in FIG. 8, the blind 3 according to the third embodiment is different from the blind 1 according to the first embodiment in that a first screen 33 is used instead of the first screen 13. The first screen 33 is such that the pieces of the pleats 331 that form the protruding portion on the rear side are bonded to each other over the entire length in the longitudinal direction from the apex of the protruding portion to a predetermined width. Is different. An insertion hole 331a is formed in the bonded portion. Here, the width bonded from the apex of the protruding portion may be equal to or greater than the distance from the apex to the insertion hole 331a, so that the lifting cord 16 is not exposed when the blind 3 is viewed from the front. The design of the blind 3 can be improved.

  In the above-described first to third embodiments, the first screen 13 and the second screen 14 arranged at the front and rear are used as one screen, but the upper and lower blinds are arranged at the top and bottom. It is also possible to apply to a two-stage blind. In that case, it is good also as a structure which arrange | positions two screens forward and backward with respect to only an upper screen, only a lower screen, or two upper and lower screens, respectively.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

1, 2, 3 Blinds 13, 33 First screen 131, 331 Pleats 131a, 331a Insertion holes 14, 24 Second screens 141, 241 Pleats 141a, 241a Insertion holes 15 Bottom rail 16 Lifting cord 17 Pitch cord

Claims (6)

A first screen (13, 33) in which a plurality of pleats (131, 331) are formed vertically so that they can be folded and unfolded;
A second screen (14, 24) disposed at the rear of the first screen and having a plurality of pleats (141, 241) formed vertically so as to be folded and unfolded;
A rail (15) for fixing lower ends of the first screen and the second screen;
A lifting / lowering cord (16) for supporting the rail so as to be suspended;
The first screen has an insertion hole (131a, 331a) through which the lifting / lowering cord is inserted in the vicinity of the apex of the protruding portion protruding backward, and the second screen has the lifting / lowering cord in the vicinity of the apex of the protruding portion protruding forward. The blind is characterized in that an insertion hole (141a, 241a) is formed for inserting the through hole.   The first screen and the second screen are arranged such that a part of the projecting part projecting rearward in the first screen overlaps with a part of the projecting part projecting forward in the second screen. The blind according to claim 1.   The blind according to claim 2, further comprising a pitch code (17) for maintaining a pitch between a plurality of pleats of the second screen.   The pitch of each of the plurality of pleats (131) on the first screen (13) and the pitch of each of the plurality of pleats (141) on the second screen (14) are the same. The blind according to claim 3.   The pitch of each of the plurality of pleats (241) on the second screen (24) is smaller than the pitch of each of the plurality of pleats (131) on the first screen. A blind according to claim 1.   5. The pleats (331) forming the projecting portion projecting backward in the first screen (33) are bonded to each other from the apex of the projecting portion to a predetermined width. The blind according to any one of the above.

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