TW201604376A - Pleat screen - Google Patents

Abstract

Provided is a pleat screen having a screen that can be folded in a zig-zag shape. This pleat screen is provided with a screen (7) formed from a weld pattern (10), and the weld pattern (10) is shaped so as to satisfy predetermined shrinkage resistance and weld strength. Preferably, a unit weld pattern (P1) of the weld pattern (10) is shaped so that a weld portion is present in both regions partitioned by a boundary, the direction passing through the center being the boundary. Further preferably, the unit weld pattern (P1) of the weld pattern (10) has a weld portion substantially perpendicular to the one direction.

Description

Pleated curtain

The present invention relates to a pleated screen having a cord that can be bent into a zigzag shape.

The pleated blind is configured to suspend a cord that can be bent in a zigzag shape in the up and down direction from the upper beam, and appropriately adjust the amount of light collected by raising or lowering the cord.

In the pleated blind, in order to bend the cord into a zigzag shape, a joining sheet is separately provided by a method such as welding on one side pleat layer of a fabric having a pleat layer in a zigzag shape. The bonding sheet can be bonded to the bonding sheets of other fabrics by a method such as welding. Further, the engaging piece is provided with an insertion hole through which the lifting cord suspended from the upper beam is inserted, and the lower end of the lifting cord is attached to the lower beam, for example. Therefore, in the pleated blind, by lowering or raising the lower beam by the lifting cord, the cord can be pulled downward or the cord can be folded upward.

As a method of forming the above-mentioned bonding sheet, a method of welding in a line shape in the longitudinal direction (left-right direction) of the cord is known (for example, refer to Patent Document 1).

[Previous Technical Literature]

[Patent Literature]

Patent Document 1: US Patent No. 4974656

As disclosed in Patent Document 1, it is known to form a bonding sheet in a pleated layer of a fabric so as to be welded in a direction of a line in the longitudinal direction (left-right direction) of the curtain.

However, in the method of welding in the longitudinal direction (left-right direction) of the cord in the form of a broken line, there is a problem that the welded portion shrinks and the entire cord is warped, for example, when the fabric has heat shrinkability.

Therefore, it has been desired to develop a welding method in which the entire fabric is less likely to warp even when the fabric has heat shrinkability.

In view of the above problems, it is an object of the present invention to provide a pleated blind having a cord that can be bent into a zigzag shape.

A pleated blind according to an aspect of the present invention has a ply that can be bent into a zigzag shape, and the pleated blind is characterized by comprising a ply that continuously welds the fabric in one direction according to a predetermined unit welding pattern. Forming, the unit weld pattern has a shape that satisfies a predetermined shrinkage resistance and weld strength.

Further, the pleated blind of the present invention is characterized in that the unit-fused pattern has a shape which is defined by the boundary of the center of the unit-fused pattern by the boundary In the both side regions, there is a shape of the welded portion that satisfies the prescribed shrinkage resistance and the welding strength as a whole.

Further, the pleated blind according to the present invention is characterized in that the unit welding pattern is configured to include one or more of one or more dots, one or more line segments, and one or more curved segments.

Further, the pleated blind according to the present invention is characterized in that the welded portion constituting the unit welding pattern is formed such that a welding width of all the welded portions constituting the welded portion parallel to the one direction is a predetermined value or less Further, the entire deposited area of the welded portion of the unit deposited pattern is a predetermined value or more.

Further, the pleated blind of the present invention is characterized in that the unit weld pattern has a welded portion which is inclined at a predetermined angle with respect to the one direction.

Further, the pleated blind of the present invention is characterized in that the unit weld pattern is constituted by a welded portion which is substantially perpendicular to the one direction.

(invention effect)

According to the present invention, even when the fabric has heat shrinkability, it is possible to constitute a pleated curtain having a cord formed in a form in which the entire curtain is less likely to be warped.

Hereinafter, a pleated screen according to an embodiment of the present invention will be described with reference to the drawings. In addition, in the specification of the present application, for the side view of the pleated blind shown in FIG. 1, the upper and lower sides of the figure are defined as upper (or upper) and lower (or lower), respectively, based on the hanging direction of the curtain. The left side of the figure is defined as the front side (indoor side) of the pleated screen, and the right side of the figure is defined as the rear side (outdoor side) of the pleated screen. The side where the side view of FIG. 1 is confirmed is referred to as the right side, and is referred to as a direction perpendicular to the illustrated surface of the side view of FIG. 1 when, for example, the left-right direction (the longitudinal direction of the cord) of the pleated blind.

(pleated curtain It Overall composition)

Fig. 1 is a side view showing a schematic configuration of a pleated blind according to an embodiment of the present invention. In the pleated blind shown in FIG. 1, a curtain 7 which can be bent in a zigzag shape in the up and down direction is suspended and supported from a head box 1, and is provided by using an operating cord 9 (for example, a bead chain). An operating device (not shown) in the upper beam 1 raises or lowers the curtain 7, thereby appropriately adjusting the amount of light collected.

In the curtain 7, a side pleat layer of a fabric having a pleat layer 7a in a zigzag shape is provided with a joining piece 7b which is formed by welding by a welding pattern according to the present invention. The bonding piece 7b is subjected to the above-described welding to be bonded to the bonding sheet 7b of the other fabric. Further, the engaging piece 7b is provided with an insertion hole 7c into which the lifting cord 3 suspended from the upper beam 1 is inserted, and the lower end of the lifting cord 3 is attached to the bottom rail 5.

Further, the operation cord 9 is composed of, for example, an annular bead chain that is wound around a pulley that is rotatably housed in an operation device (not shown). A plurality of concave portions into which the bead portions constituting the bead chain of the operation cord 9 are fitted are formed on the outer peripheral surface of the pulley.

A transmission gear composed of a plurality of gears is coupled to the pulley in the upper beam 1, and the transmission gear is coupled to each transmission clutch (not shown). Therefore, the rotation of the pulley is transmitted to the rotary drive shaft by the transmission coupling by the transmission gear.

Further, in the upper beam 1, a plurality of winding shafts (not shown) are provided with respect to the curtain 7, and the plurality of winding shafts are arranged side by side. Further, by the rotation of the rotary drive shaft, the winding shaft rotatably supported in the upper beam 1 is rotated, whereby the cord 7 is raised or lowered by the winding and unwinding of the lift cord 3.

Further, a brake device (not shown) that controls the rotation of the rotary drive shaft is disposed in the upper beam 1, whereby when the operation cord 9 is released after the pull-up operation of the lower beam 5, the lower beam 5 can be prevented from being The situation of its own weight and decline.

Further, on the rear side of the lift cord 3, that is, on the outdoor side, the pitch holding cord 4 is suspended from the upper beam 1 and its lower end is attached to the lower beam 5. The lift cord 3 is inserted into a plurality of annular support strands 6 that are disposed at equal intervals on the pitch maintaining cord 4. Moreover, when the lower beam 5 is lowered to stretch the cord 7, the joining piece 7b of the cord 7 is supported by the supporting strand 6, so that the pleats 7a of the cord 7 are held at substantially equal intervals.

According to the pleated blind thus configured, the curtain 7 can be folded upward or the cord 7 can be pulled downward by raising or lowering the lower beam 5.

(fusion pattern)

Fig. 2 (a) is a view showing an outline of a welded pattern 10 of Example 1 in a pleated blind according to an embodiment of the present invention, and (b) and (c) of Fig. 2 are respectively showing Comparative Examples 1 and 2. A diagram of the profile of the deposited patterns 10a, 10b.

First, as shown in FIG. 2(a), the welding pattern 10 of the first embodiment of the present invention is configured such that a welded portion is provided in a lateral fold shape. More specifically, the joining piece 7b of the cord 7 in the first embodiment is formed by a method in which a linearly welded portion which is substantially perpendicular to the longitudinal direction of the cord 7 is used as a unit welding pattern, and is left and right. The direction (the longitudinal direction of the cord 7) continuously welds the fabric, thereby forming the joint piece 7b.

On the other hand, as shown in (b) of FIG. 2, in the same manner as the method disclosed in Patent Document 1, the welding pattern 10a of the comparative example 1 is configured to have a dotted line in the left-right direction (the longitudinal direction of the curtain 7). There is a welded part. More specifically, the joining piece 7b of the cord 7 in Comparative Example 1 is formed by a method in which a linearly welded portion which is substantially parallel to the longitudinal direction of the cord 7 is used as a unit welding pattern, and is left and right. The direction (the longitudinal direction of the cord 7) continuously welds the fabric, thereby forming the joint piece 7b.

Further, as shown in (c) of FIG. 2, the welded pattern 10b of Comparative Example 2 is configured such that a single dot-shaped welded portion is formed in a dotted line shape in the left-right direction (the longitudinal direction of the cord 7). More specifically, the joining piece 7b of the cord 7 in Comparative Example 2 is formed by a method of forming a single dot-shaped welded portion as a unit welding pattern in the left-right direction (the length direction of the curtain 7) The fabric is continuously welded, thereby forming the joint piece 7b.

Hereinafter, the effects of the welding pattern 10 of the first embodiment and the effects of the welding patterns 10a and 10b of the comparative examples 1 and 2 will be described in detail. First, (a) of FIG. 3 is a view showing the effect of the welding pattern 10 of the first embodiment of the pleated blind according to the embodiment of the present invention, and (b) of FIG. 3 is a welding pattern for explaining the comparative example 1. Figure of the role of 10a.

As shown in (a) of FIG. 3, the welded pattern 10 of the first embodiment is configured to have a welded portion in the form of a lateral fold, and the joined sheet 7b of the curtain 7 in the first embodiment is formed by the following method. That is, the left and right direction (the longitudinal direction of the cord 7) is used as the machining direction, and the linearly welded portion that is substantially perpendicular to the machine direction is continuously welded to the fabric as a unit welding pattern, thereby The joint piece 7b is formed.

As described above, the deposited pattern 10 of the first embodiment has a linearly welded portion which is substantially perpendicular to the longitudinal direction of the cord 7 as a unit-welded pattern, and therefore, even in a fabric having heat shrinkability, for example, in the machine direction. The heat shrinkage is also suppressed, so that the fabric 7 does not bend as a whole.

On the other hand, as shown in FIG. 3( b ), the welded pattern 10 a of Comparative Example 1 is configured such that a welded portion is provided in a dotted line shape in the left-right direction (longitudinal direction of the cord 7 ), and in Comparative Example 1, The joining piece 7b of the cord 7 is formed by using a left-right direction (longitudinal direction of the cord 7) as a processing direction, and a linearly welded portion which is substantially parallel with respect to the machine direction as a unit welding pattern. On the other hand, the fabric is continuously subjected to a welding process, whereby the joining piece 7b is formed.

Then, the welded pattern 10a of the comparative example 1 has a linearly welded portion which is substantially parallel to the longitudinal direction of the cord 7 as a unit-welded pattern, and therefore, for a fabric having heat shrinkability, for example, heat in the processing direction The shrinkage is so large that it cannot be ignored, and the fabric 7 is bent as a whole.

In order to prevent the above-described bending of the fabric, it is conceivable to provide a welded portion having a single dot shape in the longitudinal direction (left-right direction) of the curtain 7 as in the welding pattern 10b of the comparative example 2 described above. However, in the deposited pattern 10b of the comparative example 2, compared with the deposited pattern 10 of the first embodiment and the welded pattern 10a of the comparative example 1, the area of the welded portion is reduced to cause a decrease in the welding strength, and thus There is a problem that the welded portion is easily peeled off.

Therefore, as the welding pattern for forming the bonding sheet 7b of the cord 7, the welding pattern 10 of the first embodiment which satisfies the shrinkage resistance and the welding strength of the fabric is preferable.

Description will be made more specifically with reference to FIG. 4. (a) of FIG. 4 is a view for explaining the action conditions of the welding pattern 10 of the first embodiment in the pleated blind according to the embodiment of the present invention, and (b) and (c) of FIG. 4 are the same as those of the first embodiment. A graph of the welded patterns 10a and 10b of Comparative Examples 1 and 2 in which the deposited pattern 10 was compared.

First, as shown in (a) of FIG. 4, in the welding pattern 10 of the first embodiment, a linearly welded portion which is substantially perpendicular to the longitudinal direction of the curtain 7 is used as the unit welding pattern P1 along the curtain 7. The fabric is continuously welded in the length direction. Thereby, the unit welding patterns P2 and P3 having the same shape as the unit welding pattern P1 are sequentially formed to constitute the welding pattern 10 of the first embodiment.

At this time, the welding width d in the machine direction of the unit weld pattern P1 of the first embodiment is equal to or less than the predetermined value D, and the shrinkage resistance (condition A) is satisfied. Further, the deposition area of the unit deposited pattern P1 is equal to or greater than a predetermined value S, and the welding strength (condition B) is satisfied. The predetermined value D and the predetermined value S are values that are uniformly determined for the fabric to be welded, but different values may be used depending on the fabric to be welded. By continuously welding the fabric in accordance with the unit welding pattern P1 satisfying the above conditions A and B, it is possible to prevent the fabric from being bent and to prevent peeling of the welded portion. Further, the pitch between the unit welding patterns P1, P2, P3 and the like which are sequentially formed may be set to vary depending on the fabric, but a common fixed pitch may be set for a plurality of types of fabrics as long as the conditions A and B are satisfied.

On the other hand, as shown in (b) of FIG. 4, the welding area of the unit deposited pattern P1 of Comparative Example 1 is equal to or greater than a predetermined value S, and the welding strength (condition B) is satisfied, but the welding is performed in the machine direction. The width d exceeds the predetermined value D, and the shrinkage resistance (condition A) is not satisfied.

Further, as shown in (c) of FIG. 4, the welding width d in the machine direction of the unit deposition pattern P1 of Comparative Example 2 is equal to or less than a predetermined value D, and the shrinkage resistance (condition A) is satisfied, but the welding area is smaller than The predetermined value S does not satisfy the welding strength (condition B).

Further, when defined in terms of the shape of the unit deposited pattern P1, the unit deposited pattern P1 of the first embodiment is formed so as to exist in the both sides PE1 and PE2 divided by the boundary with the processing direction passing through the center O as a boundary. The welded portion of the conditions A and B is satisfied as a whole.

Referring to Fig. 5, a modification of the unit deposited pattern P1 of the first embodiment will be described with respect to the shape of the unit deposited pattern P1. (a) to (h) of Fig. 5 are explanatory views of a welding pattern of another embodiment of the pleated blind according to the embodiment of the present invention, respectively.

In the first modification shown in FIG. 5(a), a dotted-shaped welded portion that is substantially perpendicular to the longitudinal direction of the curtain 7 is configured as the unit-fused pattern P1.

In the second modification shown in FIG. 5(b), the linear welding portion inclined at a predetermined angle with respect to the longitudinal direction of the curtain 7 is configured as the unit welding pattern P1.

The third modification shown in FIG. 5(c) is a further modification of the second modification, and is a configuration in which a dotted-shaped welded portion that is inclined at a predetermined angle with respect to the longitudinal direction of the curtain 7 is used as the unit-fusion pattern P1.

In the fourth modification shown in FIG. 5(d), the unit welding pattern P1 has a plurality of substantially circular dots which are dispersed in a predetermined arrangement with respect to the longitudinal direction of the curtain 7. Apply part.

The fifth modification shown in FIG. 5(e) is a further modification of the second modification, and is constituted by a unit welding pattern P1 having a substantially "く" shape, and the unit welding pattern P1 having a substantially "く" shape. There are a plurality of linear welded portions that are inclined in different directions at a predetermined angle with respect to the longitudinal direction of the curtain 7.

The modification 6 shown in (f) of FIG. 5 is a further modification of the second modification, and is constituted by a unit welding pattern P1 having a substantially "x" shape, and the unit welding pattern P1 having a substantially "x" shape. There are a plurality of linear welded portions that are inclined in different directions at a predetermined angle with respect to the longitudinal direction of the curtain 7.

The modification 7 shown in (g) of FIG. 5 is an example in which the unit welding pattern P1 is constituted by a pattern pattern surrounded by three or more line segments.

The modification 8 shown in (h) of FIG. 5 is an example in which the unit welding pattern P1 is constituted by a pattern pattern surrounded by one or more curved segments.

In addition to the above, various modifications can be made as a modification of the unit deposition pattern P1 of the first embodiment, and as a whole, as long as the conditions A and B are satisfied as a whole, that is, all of the welded portions parallel to the machining direction are formed. When the welding width d of the welded portion is equal to or smaller than the predetermined value D and the entire welded area of the welded portion of the unit deposited pattern P1 is equal to or greater than a predetermined value S, the one or more dots and one or more line segments can be configured. More than one of more than one curve segment. Further, it is formed such that the welding direction passing through the center O of the unit welding pattern P1 is a boundary, and the welded portions satisfying the conditions A and B as a whole exist in the both side regions PE1 and PE2 divided by the boundary. Therefore, as long as the unit welding pattern P1 of the welded portion that satisfies the conditions A and B as a whole is present, it is possible to form a welded pattern of various shapes.

In addition, as shown in the unit deposited pattern P1 of the first embodiment, the welded pattern 10 formed by the welded portion which is substantially perpendicular to the machine direction can be reliably satisfied by satisfying the above-described conditions A and B. .

The present invention has been described with reference to the specific embodiments. However, the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit and scope of the invention.

For example, in the foregoing example, a pleated blind having one curtain 7 is exemplified, but the cord to which the welding method of the present invention is applied can also be utilized for pleating in a form in which a plurality of cords are connected by a center beam. A curtain, or a pleated blind having a curtain arranged in two rows as shown in FIG. 6(a), or a pleated blind having a honeycomb arrangement as shown in FIG. 6(b).

(industrial availability)

According to the present invention, even when the fabric has heat shrinkability, it is possible to constitute a pleated curtain having a cord formed in a form in which the entire curtain is less likely to be warped, and therefore, the pleated curtain having a cord which can be bent into a zigzag shape Useful for its use.

1‧‧‧上梁
3‧‧‧ Lifting rope
4‧‧‧ spacing rope
5‧‧‧ Lower beam
6‧‧‧Support rope
7‧‧‧ Cord
7a‧‧‧ pleats
7b‧‧‧Joint piece
7c‧‧‧ inserted through hole
9‧‧‧Operation rope
10‧‧‧Fuse pattern of Example 1
10a‧‧‧Fracture pattern of Comparative Example 1
D‧‧‧fusion width
O‧‧ Center
P1, P2, P3‧‧‧ unit welding pattern

Fig. 1 is a side view showing a schematic configuration of a pleated blind according to an embodiment of the present invention. (a), (b), and (c) of Fig. 2 are views showing an outline of a deposited pattern of Example 1 and a profile of a welded pattern of Comparative Examples 1 and 2, respectively, of the pleated blind according to the embodiment of the present invention. (a) and (b) of FIG. 3 are views for explaining the action and effect of the welded pattern of Example 1 and the effect of the welded pattern of Comparative Example 1 in the pleated blind according to the embodiment of the present invention. (a), (b), and (c) of Fig. 4 are diagrams for explaining the working conditions of the welding pattern of the first embodiment of the pleated blind according to the embodiment of the present invention, and comparative examples 1 and 2 for comparison therewith. . (a) to (h) of Fig. 5 are explanatory views of a welding pattern of another embodiment of the pleated blind according to the embodiment of the present invention, respectively. (a) and (b) of Fig. 6 are side views showing an overview of a pleated blind of another embodiment having a curtain to which the welding pattern of the present invention is applied.

7‧‧‧ Cord

10‧‧‧Fuse pattern of Example 1

10a‧‧‧Fracture pattern of Comparative Example 1

Claims (6)

A pleated blind having a ply that can be bent into a zigzag shape, wherein the pleated blind is characterized by comprising a ply formed by continuously welding a fabric in one direction according to a predetermined unit welding pattern. The unit welding pattern has a shape that satisfies a predetermined shrinkage resistance and a welding strength. The pleated blind according to claim 1, wherein the unit welding pattern has a shape that is defined by the one direction passing through the center of the unit welding pattern, The shape of the welded portion that satisfies the predetermined shrinkage resistance and the welding strength as a whole exists in both side regions divided by the boundary. The pleated blind according to claim 1 or 2, wherein the unit welding pattern is configured to include one or more of one or more dots, one or more line segments, and one or more curved segments. The pleated blind according to any one of claims 1 to 3, wherein the welded portion constituting the unit welding pattern is formed to constitute a full melting of the welded portion parallel to the one direction. The welding width of the applied portion is not more than a predetermined value, and the entire welding area of the welded portion of the unit welding pattern is a predetermined value or more. The pleated blind according to any one of claims 1 to 4, wherein the unit-welded pattern has a welded portion inclined at a predetermined angle with respect to the one direction. The pleated blind according to any one of claims 1 to 5, wherein the unit-welded pattern is composed of a welded portion that is substantially perpendicular to the one direction.