JP6700890B2 - Solar shading device - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar shading device such as a pleated screen or a horizontal blind that attaches a lower end of a lifting cord or a ladder cord hanging from a head rail to a bottom rail via a cord length adjusting mechanism.

  Conventionally, a large number of slats are supported in an aligned state by a ladder cord hanging from a head box, and the upper end of the ladder cord is connected to a ladder cord supporting device provided in the head box, and a bottom rail arranged below the slats row. There is disclosed a blind in which the lower end of a ladder cord is connected (for example, refer to Patent Document 1). In this blind, a groove is provided on the lower surface of the bottom rail along the longitudinal direction thereof. Further, the lower end of the ladder cord is turned by the turning means in the longitudinal direction of the groove, and the lower end of the ladder cord is fixed by the slide holder movably inserted along the groove in the groove. The slide holder is fixed in its groove by a fixing means (fixing screw) so that its position can be adjusted.

  In the blind constructed in this way, the lower end of the ladder cord is guided by the turning means to the groove formed on the lower surface of the bottom rail, so that the slide holder to which the lower end of the ladder cord is fixed is inserted into the groove of the bottom rail. The height of the bottom rail can be changed by changing the amount of pulling the ladder cord into the bottom rail by moving the bottom rail. As a result, even when the lower surface of the bottom rail comes into contact with the lower part of the window frame or the floor surface when the blind is completely lowered, the height of the blind can be finely adjusted by a simple operation of the slide holder. It is like this.

  On the other hand, there is disclosed a solar radiation shielding device in which the solar radiation shielding member can be moved up and down by raising and lowering a bottom rail with a lifting and lowering cord operation device (for example, refer to Patent Document 2). This solar shading device includes an adjusting member that allows the lower limit position of the bottom rail to be adjusted by pulling the lifting cord into the bottom rail. The adjusting member has a moving member that connects the lower end of the elevating cord and has a projection formed on the surface thereof and is supported in the bottom rail so as to be movable in the longitudinal direction thereof, and a plurality of recesses that can be engaged with the projection. .. Further, it is configured by an engaging member fitted to the bottom rail, and the lifting cord is pulled into the bottom rail by the engaging and disengaging operation of the projection and the recess. Further, the protrusion and the recess are made of synthetic resin, and the protrusion and the recess are engaged and disengaged by the elasticity of the synthetic resin. Further, a lock member is provided to prevent the engagement and disengagement of the projection and the recess by preventing the synthetic resin from bending due to elasticity.

  Specifically, the lower ends of the ladder cords are attached to the bottom rail at a plurality of locations in the longitudinal direction by the tape holder, and the support member is fitted into the attachment position of the tape holder in the bottom rail. Further, an opening into which the support member can be inserted is formed along the longitudinal direction of the bottom rail on the bottom surface of the bottom rail, and the moving member is movable inside the support member along the longitudinal direction of the bottom rail. The lock member is provided so that the moving member can be fixed at a predetermined position of the support member. Further, a tip end portion of the support member is opened so that the moving member and the lock member can be inserted, and a guide hole through which an elevating cord can be inserted is formed at a base end portion of the support member. The lower end is connected to the base end of the moving member. Further, a pair of first arm portions is formed at the tip of the moving member, and the first arm portions have flexibility and are urged toward the outside. Since the support member is formed with the first engaging portion that is engageable with the tip of the first arm portion along the longitudinal direction thereof, the tip (the protrusion) of the first arm portion and the first engaging portion are formed. The movable member is configured to be movable in the longitudinal direction of the support member by the engagement/disengagement operation with the joint portion (the above-mentioned concave portion). Further, a locking piece is provided at the base end portion of the lock member, and when the locking piece is located at the tip of the first arm portion, the first arm portion is prevented from bending inward to move. The member is configured to be immovable with respect to the support member, and the movable member is movable with respect to the support member when the locking piece is located at the base end of the first arm portion.

  In the solar radiation shielding device configured as described above, the length of the lifting cord between the head box and the bottom rail is adjusted by moving the lock member and moving the moving member along the longitudinal direction of the support member. Since the adjustment can be made, the lower limit position of the bottom rail can be easily adjusted. Further, since the lock member for fixing the moving member to the desired position of the support member is provided, it is possible to reliably maintain the adjusted lower limit position of the bottom rail. Further, since the moving member is provided so as to be movable in the longitudinal direction of the bottom rail, it is possible to secure a sufficient adjustment distance for the lifting cord, so that the adjustment range of the lower limit position of the bottom rail can be increased. Furthermore, since the length of the lifting cord is adjusted by the distance that the moving member is moved, it is easy to grasp the adjustment distance of the lifting cord, and it is possible to quickly adjust even when the adjustment distance is large.

Japanese Unexamined Patent Publication No. 2002-194972 (Claim 1, paragraph [0012], [0018], FIGS. 1 to 7) Japanese Patent No. 3669907 (claims 5 to 7, paragraphs [0040] to [0044], [0052] to [0056], FIGS. 6 to 11)

  However, in the solar shading device disclosed in the above-mentioned conventional patent document 1, the amount of adjustment of the length of the ladder cord and the amount of movement of the slide holder along the groove of the bottom rail are the same, and the conventional patent In the solar shading device disclosed in Document 2, the amount of adjustment of the length of the lifting cord and the amount of movement of the moving member along the longitudinal direction of the support member are the same, so the cord provided in the bottom rail is the same. There is a problem that the entire size of the mechanism for adjusting the length increases in the longitudinal direction of the bottom rail. Therefore, in the solar shading devices disclosed in the above-mentioned conventional patent documents 1 and 2, for example, in a solar shading device having a narrow width, a weight bar of a predetermined mass to be arranged in the bottom rail cannot be arranged, and the mass bar is shortened. If a weight bar with a small size is arranged, there is a possibility that a malfunction may occur in which the shield cannot be fully deployed.

  A first object of the present invention is that the cord length adjusting mechanism can be downsized, and other members such as a weight bar to be arranged on the bottom rail can be appropriately arranged. The object of the present invention is to provide a solar shading device that can secure the stability of the solar radiation. A second object of the present invention is to provide a solar shading device capable of preventing an erroneous operation by an operator and preventing damage to the cord length adjusting mechanism due to the erroneous operation. A third object of the present invention is that the work of locking the moving member by the pair of lock plates of the lock member and the work of closing the moving member and the fixed member by the lid of the lock member can be performed at the same time, and the workability can be improved. , To provide a solar shading device.

  A first aspect of the present invention is, as shown in FIGS. 1 to 3, 6 and 8, a head rail 11 attached to a ceiling, a wall or a window frame, and a shield hanging from the head rail 11. 12, a bottom rail 13 extending horizontally in the lower end of the shield 12, a cord 14 hanging from the head rail 11, a cord 14 fixed in the bottom rail 13, and attached to the lower end of the cord 14. In the solar shading device 10 including the cord length adjusting mechanism 16 capable of adjusting the length of the cord 14, the cord length adjusting mechanism 16 inserts the lower end portion of the cord 14 into the insertion portion 17 a and the lower end of the cord 14. A lower end of the cord 14 is formed by winding a fixing member 17 having a locking portion 17b that can be locked and fixed in the bottom rail 13, and a lower end portion of the cord 14 inserted through the insertion portion 17a of the fixing member 17 around the fixing member 17. A movable member 18 movable in the longitudinal direction of the bottom rail 13 with respect to the fixed member 17 in a state where the movable member 18 is fixed to the fixed member 17, and a lock member 19 that locks the movable member 18 immovably with respect to the fixed member 17. It is characterized by having.

A second aspect of the present invention is an invention based on the first aspect, and as shown in FIGS. 1 to 3 and 7, further extends to the fixed member 17 in the longitudinal direction of the bottom rail 13 and the moving member 18. A main elongated hole 17c for movably housing is formed, and a pair of sub elongated holes 17d, 17d are formed on both sides of the main elongated hole 17c with a space therebetween to be elastically deformable on both sides of the main elongated hole 17c. a pair of ribs 17e, 17e are formed, the moving member 18 code wrapping portion 18a having a lower end is wound in the code 14 is provided, the rack forming part 18c provided on the lower surface of the cord winding section 18a A pair of racks 18b, 18b are formed on both side surfaces, respectively, and a pair of racks 18b, 18b that can be selectively meshed with the teeth of the racks 18b, 18b in a state where the moving member 18 is housed in the main elongated hole 17c of the fixing member 17. Protrusions 17f, 17f are provided on the inner side surfaces of the pair of ribs 17e, 17e, respectively, and the lock member 19 has a pair of lock plates 19a, 19a that can be inserted into the pair of sub long holes 17d, 17d, respectively. It is characterized in that the lock plates 19a, 19a are inserted into the pair of sub long holes 17d, 17d to prevent elastic deformation of the pair of ribs 17e, 17e.

  A third aspect of the present invention is the invention based on the second aspect, and further, as shown in FIGS. 5 to 7, the lock member 19 further includes a lid body 19b holding a pair of lock plates 19a, 19a. It is characterized in that the lid body 19b is configured to close the moving member 18 and the fixed member 17.

A fourth aspect of the present invention is the invention based on the first or second aspect, and is characterized in that the cord is an elevating cord 14 or a ladder cord as shown in FIGS. 1 and 8.

  In the solar shading device according to the first aspect of the present invention, the lower end of the cord inserted through the insertion portion of the fixed member of the cord length adjusting mechanism is wrapped around the moving member to fix the lower end of the cord to the fixed member. , After moving the moving member with respect to the fixed member in the longitudinal direction of the bottom rail by a desired length, and then locking the moving member with respect to the fixed member by the lock member, the length of the cord is adjusted to the desired length. Can be adjusted to Here, the moving member can be regarded as a moving pulley, and according to the principle of the moving pulley, when the adjustment length of the cord is L, the moving distance of the moving member becomes as short as L/2, so the cord length adjusting mechanism. Can be miniaturized. As a result, other members such as a weight bar to be arranged on the bottom rail can be appropriately arranged, so that the stability of the raising/lowering operation of the shield can be ensured.

  In the solar radiation shielding device of the second aspect of the present invention, the moving member is fixed with the lower end of the cord inserted through the insertion portion of the fixing member wrapped around the moving member and the lower end of the cord fixed to the fixing member. When the bottom rail is moved in the longitudinal direction, the pair of ribs of the fixed member elastically deforms, and the teeth of the pair of racks of the movable member ride over the pair of protrusions of the fixed member while moving the movable member relative to the fixed member. Can be moved. When the pair of lock plates of the lock member are inserted into the pair of sub-long holes of the fixed member after the moving member is moved by a desired distance with respect to the fixed member, the pair of lock plates elastically deform the pair of ribs. Are blocked and the moving member is locked with respect to the fixed member. The cord can be adjusted to a desired length by such a simple operation. Further, similarly to the above, since the cord length adjusting mechanism can be downsized, other members such as a weight bar to be placed on the bottom rail can be appropriately placed, so that the shield can be raised and lowered. The stability of operation can be secured.

  In the solar shading device according to the third aspect of the present invention, when the pair of lock plates of the lock member are inserted into the pair of sub-long holes of the fixed member, the lid of the lock member closes the moving member and the fixed member. It is possible to prevent an erroneous operation of the cord length adjusting mechanism by an operator such as a user of the shielding device. As a result, it is possible to prevent the cord length adjusting mechanism from being damaged by an erroneous operation of the cord length adjusting mechanism. Further, since the work of locking the moving member by the pair of lock plates of the lock member and the work of closing the moving member and the fixed member by the lid of the lock member can be performed at the same time, the workability of adjusting the length of the cord can be improved. ..

It is a top view which shows the cord length adjustment mechanism which removed the lock member among the solar radiation shielding apparatuses of embodiment of this invention. It is a perspective view of the cord length adjustment mechanism which removed the lock member. FIG. 4A is a sectional view taken along the line AA of FIG. 4 showing a state in which predetermined teeth of the rack of the moving member are meshed with the protrusions of the fixed member, and FIG. FIG. 6 is a cross-sectional view taken along the line BB of FIG. 4 showing the state where FIG. 4C is shown, and FIG. 6C is a cross-sectional view taken along the line C-C of FIG. FIG. 5A is a sectional view taken along the line D-D of FIG. 3 showing a state in which predetermined teeth of the rack of the moving member are meshed with the protrusions of the fixed member, and FIG. FIG. 4C is a sectional view taken along line EE of FIG. 3 showing a state where FIG. 3C is a sectional view, and FIG. 6C is a sectional view taken along line FF of FIG. 3 showing a state where teeth adjacent to predetermined teeth of the rack mesh with the protrusions. It is a principal part perspective view which shows the state which the cord length adjustment mechanism was attached to the bottom rail. It is the GG sectional view taken on the line of FIG. It is an exploded perspective view showing the state just before attaching the cord length adjustment mechanism to a bottom rail. It is a front view of the pleat screen to which the cord length adjustment mechanism was attached.

  Next, a mode for carrying out the present invention will be described based on the drawings. As shown in FIGS. 7 and 8, the solar radiation shield device 10 includes a head rail 11 attached to a ceiling, a wall, or a window frame, a shield 12 hanging from the head rail 11, and a lower end of the shield 12. A bottom rail 13 extending horizontally in the bottom rail 13, a cord 14 hanging from the head rail 11, and a cord length adjusting mechanism 16 (FIG. 7) fixed in the bottom rail 13 for attaching the lower end portion of the cord 14. Equipped with. In this embodiment, the solar shading device 10 is a pleated screen formed by bending the shield 12 in a zigzag shape (FIG. 6 ), and the cord 14 has a plurality of through holes 12 a formed in the shield 12. The lifting cord is loosely inserted (FIGS. 6 and 8). Further, the bottom rail 13 is formed by extrusion molding or pultrusion molding of aluminum, aluminum alloy or the like so that the upper surface is opened (FIGS. 5 to 7). The bottom rail 13 includes a bottom wall portion 13a extending in the longitudinal direction of the shield 12, a pair of side wall portions 13b and 13b erected on both sides of the bottom wall portion 13a, and upper ends of the pair of side wall portions 13b and 13b. A pair of upper wall portions 13c and 13d projecting in a direction approaching each other, and a pair of intermediate wall portions 13e 13f projecting in a direction approaching each other from the center in the height direction of the pair of side wall portions 13b 13b. Have. A relatively wide upper opening 13g is formed between the pair of upper walls 13c and 13d, and an inner opening 13h narrower than the upper opening 13g is formed between the pair of intermediate walls 13e and 13f. The bottom rail 13 is divided into a lower space 13i and an upper space 13j which communicate with each other. The lower space 13i is partitioned by the bottom wall portion 13a, the pair of side wall portions 13b, 13b, and the pair of intermediate wall portions 13e, 13f, and the upper space 13j is formed by the pair of upper wall portions 13c, 13d and the pair of side wall portions 13b, 13b. It is partitioned by 13b and a pair of intermediate wall portions 13e and 13f.

  On the other hand, the cord length adjusting mechanism 16 is interposed between the lower end of the elevating cord 14 and the bottom rail 13 and is configured to adjust the length of the elevating cord 14 (FIGS. 5 to 7). Further, the cord length adjusting mechanism 16 moves the fixed member 17 fixed in the bottom rail 13, the movable member 18 movable in the longitudinal direction of the bottom rail 13, and the movable member 18 with respect to the fixed member 17. And a locking member 19 that locks irreversibly (FIGS. 1 to 4). The fixing member 17 is formed in a flat rectangular parallelepiped shape extending in the longitudinal direction of the bottom rail 13 (FIGS. 1, 2 and 7), and is configured to be accommodated in the lower space 13i of the bottom rail 13 (FIGS. 6 and 6). (Fig. 7). At one end of the fixing member 17, an insertion portion 17a capable of inserting the lower end portion of the elevating cord 14 and a locking portion 17b capable of engaging the lower end of the elevating cord 14 are formed (FIG. 1, FIG. 2, FIG. 6 and 7). Further, a main elongated hole 17c extending in the longitudinal direction of the bottom rail 13 and accommodating the rack forming portion 18c of the moving member 18 is formed from the other end of the fixing member 17 to the center (Figs. 1 to 4 and (Fig. 7). A pair of sub long holes 17d and 17d are formed on both sides of the main long hole 17c at intervals. As a result, a pair of elastically deformable ribs 17e, 17e are formed on both sides of the main elongated hole 17c. Further, a pair of protrusions 17f, 17f facing each other are provided on the inner side surfaces of the pair of ribs 17e, 17e, respectively.

  The moving member 18 includes a cord winding portion 18a around which the lower end portion of the lifting cord 14 is wound, and a rack forming portion 18c provided on the lower surface of the cord winding portion 18a and having a pair of racks 18b, 18b formed on both side surfaces thereof. A lower wide portion 18d provided on the lower surface of the rack forming portion 18c and wider than the rack forming portion 18c, and a rack forming portion 18c provided between the upper surface of the rack forming portion 18c and the cord winding portion 18a. The upper wide portion 18e having a wider width and the operation portion 18f provided on the upper surface of the cord winding portion 18a and wider than the cord winding portion 18a are included (FIGS. 1 to 4). Both ends of the cord winding portion 18a are formed as curved surfaces having a relatively large radius of curvature (FIG. 1). As a result, the lifting cord 14 wound around the cord winding portion 18a can smoothly slide on the curved surface of the other end of the cord winding portion 18a. Further, the rack forming portion 18c can be housed in the main elongated hole 17c of the fixing member 17 in a state where the teeth of the pair of racks 18b, 18b are selectively meshed with the pair of protrusions 17f, 17f of the fixing member 17. Configured (FIGS. 3 and 4). The rack forming portion 18c is movably accommodated in the main elongated hole 17c of the fixing member 17 by sandwiching the pair of ribs 17e, 17e of the fixing member 17 from above and below by the lower wide portion 18d and the upper wide portion 18e. (Fig. 4). Further, fine concavities and convexities are formed on the upper surface of the operation portion 18f to prevent the operator's finger from slipping (FIGS. 1, 2, 4, and 7).

  The lock member 19 has a pair of lock plates 19a and 19a that can be inserted into the pair of sub long holes 17d and 17d of the fixing member 17, and a lid body 19b that holds the pair of lock plates 19a and 19a (FIG. 3). ~ Fig. 7). By inserting the pair of lock plates 19a, 19a into the pair of sub long holes 17d, 17d, elastic deformation of the pair of ribs 17e, 17e is prevented (Figs. 3(c) and 4(c)), and the lid is closed. The body 19b is configured to close the moving member 17 and the fixed member 18 (FIGS. 5 and 6). Reference numeral 17g in FIGS. 1, 2 and 7 is a guide portion that is formed in a semi-cylindrical shape that extends upward at one end of the fixing member 17 and that guides the elevating cord 14 upward. Reference numeral 14 a in FIGS. 1, 2 and 6 is a knot formed at the lower end of the lifting cord 14. The knot 14a is configured to be lockable with a pair of locking portions 17b, 17b (FIGS. 2 and 7) formed at one end of the fixing member 17, but in this embodiment, the right locking portion is formed. 17b (FIG. 7). Further, reference numerals 17h and 17h in FIGS. 1, 2 and 7 denote a pair of elastically deformable elastic pieces formed on the upper surface of the one end of the fixing member 17, respectively. Reference numerals 17i and 17i in 7 denote a pair of first locking pieces projectingly provided on the upper surface of one end of the fixing member 17, and reference numerals 17j and 17j denote a pair of projecting projections on the upper surface of the other end of the fixing member 17. It is the second locking piece. The pair of elastic pieces 17h, 17h are pressed against the lower surfaces of the pair of intermediate wall portions 13e, 13f of the bottom rail 13, respectively, whereby rattling of the fixing member 17 in the bottom rail 13 is prevented, and the pair of first engaging members. The stop pieces 17i, 17i and the pair of second locking pieces 17j, 17j come into contact with the inner edges of the pair of intermediate wall portions 13e, 13f of the bottom rail 13 respectively (FIG. 6), so that the bottom rail 13 of the fixing member 17 is brought into contact. Is prevented from moving in the width direction. Further, the guide portion 17g of the fixing member 17 is loosely inserted into the through hole 21a formed in the adhesive plate 21 described later, whereby movement of the fixing member 17 in the longitudinal direction of the bottom rail 13 is prevented. With such a structure, the fixing member 17 is fixed to the bottom rail 13.

  On the other hand, a plurality of weight bars (not shown) are inserted into the lower space 13i of the bottom rail 13. In this embodiment, since three lifting cords 14 are suspended from the head rail 11 (FIG. 8), three sets of cord length adjusting mechanisms 16 are attached to the bottom rail 13. Therefore, the weight bar is inserted into the lower space 13i of the bottom rail 13 so as to be positioned between the three sets of cord length adjusting mechanisms 16. Further, the upper opening 13g of the bottom rail 13 is closed by a resin adhesive plate 21 (FIGS. 5 to 7). The adhesive plate 21 has a through hole 21a in which the guide portion 17g of the fixing member 17 and the lifting cord 14 can be loosely inserted, and the length of the bottom rail 13 for exposing only the movable range of the operating portion 18d of the moving member 18. Long holes 21b extending in the respective directions are formed (FIGS. 5 and 7). The elongated hole 21b is configured to be closed by the lid 19b of the lock member 19. Further, the lower end of the shield 12 is sandwiched by the other upper wall portion 13d of the pair of upper wall portions 13c and 13d of the bottom rail 13 and the adhesive plate 21 (FIG. 6). An adhesive is applied between the lower end of the shield 12 and the adhesive plate 21, and the lower end of the shield 12 and the adhesive plate 21 are adhered to each other. Further, the insertion portion 17a, the locking portion 17b, the main elongated hole 17c, the sub elongated hole 17d, the rib 17e, the protrusion 17f, the guide portion 17g, the first locking piece 17h, the second locking piece 17i, and the first locking piece 17i of the fixing member 17. It is preferable that the 3 locking pieces 17j are integrally formed of plastic such as polyacetal or polycarbonate. The cord winding portion 18a, the rack 18b, the rack forming portion 18c, the lower wide portion 18d, the upper wide portion 18e and the operating portion 18f of the moving member 18 are preferably integrally formed of plastic such as polyacetal or polycarbonate. Further, the lock plate 19a and the cover plate 19b of the lock member 19 are preferably integrally formed of plastic such as polyacetal or polycarbonate.

  A procedure for arranging the lifting cord 14 in the cord length adjusting mechanism 16 of the pleated screen 10 thus configured will be described. The moving member 18 is assembled to the fixed member 17 in advance. First, the lower end of the elevating cord 14 is inserted into the insertion portion 17a of the fixing member 17 and wound around the cord winding portion 18a, and then the knot 14a is formed at the lower end of the elevating cord 14, and the knot 14a is fixed to the fixing member 17a. The locking portion 17b on the right side of the pair of locking portions 17b, 17b is locked. The lifting cord 14 can be installed in the cord length adjusting mechanism 16 by such a simple operation. Then, after fixing the cord length adjusting mechanism 16 in the bottom rail 13 in this state, the upper opening 13g of the bottom rail 13 is closed by the adhesive plate 21, and the lower end of the shield 12 is fixed to the pair of bottom rails 13. The other upper wall portion 13d of the upper wall portions 13c and 13d is sandwiched and adhered by the adhesive plate 21.

  A procedure for adjusting the length of the elevating cord 14 by the cord length adjusting mechanism 16 fixed to the bottom rail 13 will be described. First, the operating member 18 f of the moving member 18 is operated to move the moving member 18 with respect to the fixed member 17 in the longitudinal direction of the bottom rail 13. As a result, the pair of ribs 17e, 17e of the fixed member 17 is elastically deformed, and the teeth of the pair of racks 18b, 18b of the moving member 18 pass through the pair of protrusions 17f, 17f of the fixed member 17 while fixing the moving member 18 to the fixed member. It can be moved relative to 17. Next, after moving the moving member 18 by a desired distance with respect to the fixed member 17, when the pair of lock plates 19a and 19a of the lock member 19 are inserted into the pair of sub long holes 17d and 17d of the fixed member 17, The pair of lock plates 19a, 19a prevent the pair of ribs 17e, 17e from elastically deforming, and the moving member 18 is locked to the fixed member 17. The lifting cord 14 can be adjusted to a desired length by such a simple operation. At this time, the moving member 18 can be regarded as a moving pulley. For this reason, when the adjustment length of the lifting cord 14 is L, the moving distance of the moving member 18 is shortened to L/2 due to the principle of the moving pulley, so that the entire length of the cord length adjusting mechanism 16 can be shortened. it can. As a result, since the cord length adjusting mechanism 16 can be downsized, other members such as a weight bar to be placed on the bottom rail 13 can be appropriately placed, and the lifting/lowering operation of the shield 12 can be stabilized. You can secure the sex.

  On the other hand, as described above, when the pair of lock plates 19a, 19a of the lock member 19 are inserted into the pair of sub long holes 17d, 17d of the fixing member 17, the lid 19b of the lock member 19 is inserted into the long hole 21b of the adhesive plate 21. The moving member 18 and the fixed member 17 are also closed. As a result, an erroneous operation of the cord length adjusting mechanism 16 by an operator such as the user of the pleated screen 10 can be prevented, so that the cord length adjusting mechanism 16 can be prevented from being damaged by the erroneous operation of the cord length adjusting mechanism 16. Further, since the work of locking the moving member 18 by the pair of lock plates 19a, 19a of the lock member 19 and the work of closing the moving member 18 and the fixed member 17 by the lid 19b of the lock member 19 can be performed at the same time, the lifting cord The workability of adjusting the length of 14 can be improved.

  In the above embodiment, the pleated screen is used as the solar shading device, but a solar shading device such as a horizontal blind or Roman shade may be used. Further, in the above embodiment, the head rail is attached to the window frame, but the head rail may be attached to the ceiling or the wall. Further, although the lifting cord is used as the cord in the above-mentioned embodiment, a ladder cord that holds a plurality of slats (shielding bodies) of the horizontal blind at predetermined intervals may be used.

10 Pleated screen (solar shading device)
11 Head Rail 12 Shield 13 Bottom Rail 14 Elevating Cord 16 Cord Length Adjusting Mechanism 17 Fixing Member 17a Insertion Part 17c Main Slot 17d Sub Slot Hole 17e Rib 17f Protrusion 17b Locking Part 18 Moving Member 18a Cord Winding Part 18b Rack 18c Rack forming part 19 Lock member 19a Lock plate 19b Lid

Claims (4)

A head rail attached to a ceiling, a wall, or a window frame, a shield hanging from the head rail, a bottom rail horizontally extending at a lower end of the shield, and a bottom rail hanging from the head rail. In a solar shading device provided with a cord and a cord length adjusting mechanism that is fixed in the bottom rail and attaches a lower end portion of the cord, and a length of the cord is adjustable.
The cord length adjusting mechanism,
A fixing member which is formed with an insertion part capable of inserting the lower end of the cord and a locking part capable of locking the lower end of the cord and which is fixed in the bottom rail,
A movable member that is movable in the longitudinal direction of the bottom rail with respect to the fixed member with the lower end of the cord inserted through the insertion portion of the fixed member wrapped around and the lower end of the cord fixed to the fixed member. When,
A solar shading device comprising: a lock member that locks the moving member immovably with respect to the fixed member. A main elongated hole that extends in the longitudinal direction of the bottom rail and movably accommodates the moving member is formed in the fixed member,
A pair of elastically deformable ribs are formed on both sides of the main elongated hole by forming a pair of sub elongated holes on both sides of the main elongated hole, respectively.
Said code winding portion lower end is wound in the moving member before Kiko over de is provided,
A pair of racks are formed on both side surfaces of a rack forming portion provided on the lower surface of the cord winding portion,
A pair of protrusions capable of selectively meshing with each tooth of the pair of racks in a state where the movable member is housed in the main elongated hole of the fixed member are provided on inner side surfaces of the pair of ribs, respectively.
The lock member has a pair of lock plates respectively insertable into the pair of sub-long holes,
The solar shading device according to claim 1, wherein elastic deformation of the pair of ribs is prevented by inserting the pair of lock plates into the pair of sub-long holes.   The solar shading device according to claim 2, wherein the lock member further includes a lid body that holds the pair of lock plates, and the lid body is configured to close the moving member and the fixing member. The solar shading device according to claim 1 or 2, wherein the cord is a lifting cord or a ladder cord.

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