JP2015202130A - Lifting cord fastener of roman shade - Google Patents

Abstract

PROBLEM TO BE SOLVED: To promptly separate a cord side member from a screen side member when the screen side member applies a bending load higher than a predetermined value to the cord side member in the direction of rotating around a spherical body.SOLUTION: A lifting cord fastener 20 of a roman shade is configured such that a screen side member 21 is mounted in the lower part of a screen with an upper end mounted on a head rail, a cord side member 22 is mounted in the lower end of a lifting cord 13 suspended from the head rail, and the screen side member and the cord side member are removably coupled by a coupling member 23. The coupling member has a spherical body 23a integrally provided with the screen side member and a pair of elastically deformable clamping pieces 23b, 23c integrally provided with the cord side member. Also, a pair of clamping pieces is configured so as to couple the screen side member with the cord side member by removably clamping the spherical body.

Description

  The present invention relates to a cord locking tool used in a roman shade in which an upper end of a screen is attached to a head rail. More specifically, the present invention relates to a cord locking tool that is attached to the lower end of a lifting cord suspended from a head rail and attaches the lower end to a lower portion of a screen.

  2. Description of the Related Art Conventionally, a solar shading device has been disclosed in which an elevating cord is attached to a lower end portion of a fabric (shielding material) suspended from a head box, and the fabric can be moved up and down by operating the elevating cord (for example, Patent Document 1). reference.). In this solar radiation shielding device, the lower end of the lifting / lowering cord is attached to the lower end portion of the fabric via the first cord catch (connecting member). The first cord catch includes a hook portion (first connecting member) attached to the lower end portion of the cloth and a cord receiving portion (second connecting member) attached to the lower end of the lifting / lowering cord. The part is held by holding means that is released by a pulling force exceeding the mass of the fabric acting on the hook part. A shaft portion is formed at the lower end portion of the cord receiving portion, and a protrusion is formed in the circumferential direction on the outer peripheral surface of the shaft portion. Furthermore, a hook that loosely fits and holds a mounting ring attached to the lower end of the fabric is formed at the lower portion of the hook portion, and the shaft portion of the cord receiving portion can be fitted to the upper end portion of the hook portion. A joint recess is formed, and a recess that allows the protrusion to be fitted is formed on the inner peripheral surface of the fitting recess.

  In the first cord catch configured as described above, when the lifting / lowering cord is caught by the occupant and the first cord catch is pulled downward, the hook portion is held immovably downward by the cloth, so that the cord receiving portion Is surely removed from the hook.

  Further, in Patent Document 1, a hook portion formed in a box shape having an upper surface open and formed with locking pieces extending obliquely in a direction approaching each other on top of both sides, and an elastic piece bent into a U shape There is disclosed a solar shading device including a second cord catch having a cord receiving portion in which an insertion hole into which a lifting / lowering cord can be inserted is formed at a base end portion of the cord. In this solar shading device, the lower end portion of the lifting / lowering cord is inserted into the insertion hole from the base end side of the elastic piece, and the cord receiving portion is attached to the lower end of the lifting / lowering cord by a knot formed at the lower end of the lifting / lowering cord. Further, both ends of the elastic pieces are widened to form a locking shaft portion. When the elastic pieces are bent so that these locking shaft portions approach each other, and the locking shaft portions are inserted into the fitting recesses between the locking pieces, the elastic shaft portions are released from being bent. Is configured to be held between the locking pieces. Further, a metal ball is held between the elastic pieces so as to be movable up and down.

  In the second cord catch configured as described above, the ball is positioned on the locking shaft portion at the normal time when the cord receiving portion is suspended and supported by the lifting / lowering cord. In this state, the elastic pieces are prevented from bending in the direction in which the locking shafts approach each other, so that the locking shaft is held between the locking pieces and the hook is suspended from the cord receiving portion. Is done. Therefore, when the lifting / lowering cord is lifted / lowered, the cord receiving portion and the hook portion are integrally lifted / lowered, and the fabric is lifted / lowered. On the other hand, if a resident or the like is caught by the lifting / lowering cord and the stopper in the head box slips and the cord receiving portion is pulled downward, the cord receiving portion reverses in the vertical direction, so that the ball moves downward between the elastic pieces. . At this time, since the elastic piece is bent in a direction in which the locking shaft portions approach each other, the locking shaft portion is detached from the locking piece, and the cord receiving portion is detached from the hook portion. As a result, since the connection between the lifting / lowering cord and the fabric is released, the hooking between the lifting / lowering cord and the occupant can be released.

JP 2012-7419 A (Claim 1, paragraphs [0020], [0023], [0036], [0045], [0050], FIGS. 1 to 3, 7, 10, and 11)

  However, in the first cord catch shown in Patent Document 1 above, the ridge of the cord receiving portion is fitted to the groove of the hook portion. There is a problem that it is difficult to set the minimum value of the load for releasing the fitting to a desired value. Further, in the second cord catch shown in the above-mentioned conventional Patent Document 1, if the base end of the cord receiving portion does not rotate until it is positioned below the tip, the ball accommodated in the cord receiving portion is moved from the tip end to the base end. Since it does not roll to the side, a load acts on the lifting / lowering cord and the second cord catch, and the elastic piece of the cord receiving portion may not be detached from the locking piece of the hook portion.

  A first object of the present invention is to quickly connect a cord side member and a screen side member when a bending load of a predetermined value or more acts in a direction in which the screen side member rotates around the spherical body with respect to the cord side member. In addition, it is not possible to easily separate the cord side member from the screen side member when a tensile load is applied in a direction in which the screen side member is pulled away from the cord side member during normal lifting and lowering operation of the screen. An object of the present invention is to provide a lock for a lifting / lowering cord of a roman shade. A second object of the present invention is a roman shade lifting / lowering cord in which the minimum value of the separation load between the screen side member and the cord side member, that is, the minimum value of the bending load and the minimum value of the tensile load can be set relatively accurately. An object of the present invention is to provide a locking device. The third object of the present invention is to raise and lower the roman shade so that the rotation angle of the screen side member with respect to the cord side member when the screen side member and the cord side member are separated from each other can be set within a desired range. The object is to provide a cord locking device.

  As shown in FIGS. 1 to 3 and 9, the first aspect of the present invention is that a screen-side member 21 is attached to a lower portion of a screen 11 having an upper end attached to the head rail 12 and is suspended from the head rail 12. The cord-side member 22 is attached to the lower end of the lifting / lowering cord 13, and the screen-side member 21 and the cord-side member 22 are detachably coupled to each other by the coupling member 23. 20, the coupling member 23 is integrally provided with the screen side member 21 or the cord side member 22, and the spherical body 23 a is provided integrally with the cord side member 22 or the screen side member 21 and can be detached from the spherical body 23 a. And a pair of elastically deformable sandwiching pieces 23b, 23c for coupling the screen side member 21 and the cord side member 22 to each other. And wherein the Rukoto.

  The second aspect of the present invention is an invention based on the first aspect, and as shown in FIGS. 1 to 3, one or both of the pair of sandwiching pieces 23b and 23c is provided with one spherical body 23a. A through hole 23d having a smaller diameter than the spherical body 23a is formed.

  The third aspect of the present invention is an invention based on the first or second aspect, and as shown in FIGS. 1 to 3, the coupling member 23 is connected to the screen side member 21 or the cord in the vicinity of the spherical body 23a. A pair of disk-like bodies 23e that are provided integrally with the side member 22 and that have a larger diameter than the spherical body 23a, and that protrude from the ends of the pair of sandwiching pieces 23b and 23c and that are separated from each other toward the ends. When the screen side member 21 rotates around the spherical body 23a with respect to the cord side member 22, either one or both of the pair of contact portions 23f, 23f further includes contact portions 23f, 23f. It is configured to be pressed against the outer peripheral edge of the disk-like body 23e so that the pair of sandwiching pieces 23b and 23c are elastically deformed and pushed apart.

  In the roman shade lifting / lowering cord locking device according to the first aspect of the present invention, the spherical body provided integrally with the screen side member or the cord side member is provided integrally with the cord side member or the screen side member. Since the screen-side member is releasably clamped by a pair of elastically deformable clamping pieces, when a bending load is applied in a direction in which the screen-side member rotates around the spherical body with respect to the cord-side member, the screen-side member or the cord-side member Pushes the pair of sandwiching pieces of the cord side member or the screen side member. For this reason, the cord side member and the screen side member are quickly separated. As a result, damage to the locking tool and the lifting / lowering cord can be prevented, and children and the elderly can be quickly released from the entanglement of the lifting / lowering cord. On the other hand, even when a tensile load is applied in a direction in which the screen-side member is pulled away from the cord-side member at the time of normal lifting of the screen, the cord-side member and the screen-side member are not easily separated. As a result, the screen can be raised and lowered smoothly.

  In the raising / lowering cord locking tool for a roman shade according to the second aspect of the present invention, a through-hole capable of accommodating a part of a spherical body is formed in either one or both of the pair of holding pieces. By changing the diameter, the minimum value of the separation load between the screen side member and the cord side member, that is, the minimum value of the bending load and the minimum value of the tensile load can be set to desired values relatively accurately.

  In the Roman shade lifting / lowering cord locking tool according to the third aspect of the present invention, when the screen side member rotates around the spherical body with respect to the cord side member, either one or both of the pair of contact portions Is pressed against the outer peripheral edge of the disk-shaped body, and the pair of sandwiching pieces are elastically deformed and expanded, so that either one or both of the diameter of the disk-shaped body and the distance between the pair of contact portions are changed. Thus, the rotation angle of the screen-side member with respect to the cord-side member when the screen-side member and the cord-side member are separated can be set within a desired range.

It is the A arrow directional view of FIG. 3 which fractured | ruptured the principal part of the locking tool for raising / lowering cords of the Roman shade of 1st Embodiment of this invention. It is a figure corresponding to FIG. 1 which shows the state which the screen side member of the latching tool rotated only the predetermined angle centering on the spherical body with respect to the cord side member. It is a B arrow line view of FIG. It is CC sectional view taken on the line of FIG. It is the DD sectional view taken on the line of FIG. It is the EE sectional view taken on the line of FIG. It is a perspective view of the locking tool seen from the winding part side of the base. It is the perspective view of the latching tool seen from the opposite side to the winding part of a base. It is a perspective view which shows the state which expand | deployed all the screens of the Roman shade to which the latching tool was attached. It is a perspective view which shows the state which expanded only a part of the screen of the Roman shade to which the latching tool was attached. It is the F arrow directional view of FIG. 13 which fractured | ruptured the principal part of the locking tool for raising / lowering cords of the Roman shade of 2nd Embodiment of this invention. FIG. 12 is a view corresponding to FIG. 11 illustrating a state in which the screen side member of the locking tool is rotated by a predetermined angle around the spherical body with respect to the cord side member. It is a G arrow line view of FIG.

  Next, an embodiment for carrying out the present invention will be described with reference to the drawings.

<First Embodiment>
As shown in FIGS. 9 and 10, the roman shade 10 includes a head rail 12 attached to a wall surface or ceiling of a room via a fixing bracket (not shown), and an upper end attached to the head rail 12. A screen 11 having a width substantially the same as the length, and a lifting / lowering cord 13 hanging from the head rail 12 so as to be lifted and having a lower end connected to a lower portion of the screen 11 are provided. The head rail 12 has a rail body 12a made by extrusion or pultrusion of a metal such as an aluminum alloy, and lid bodies 12b provided at both ends of the rail body 12a. In the internal space of the head rail 12, a plurality of cord insertion members 14 are accommodated at arbitrary positions in the longitudinal direction of the head rail 12. In addition, a number of lifting / lowering cords 13 corresponding to the number of cord insertion members 14 are inserted into the internal space of the head rail 12, and one end portion of these lifting / lowering cords 13 extends from the corresponding predetermined cord insertion member 14 to the screen 11. Drooping along the back of the. In addition, a plurality of horizontal rods 16 are attached to the screen 11 at predetermined intervals in the vertical direction, and a cord ring 17 is provided on the back surface of the screen 11 where the lifting cord 13 suspended from the head rail 12 intersects the horizontal rod 16. Is installed. As a result, the cord ring 17 is attached to the back surface of the screen 11 at a predetermined interval in the vertical direction. Note that reference numeral 18 in FIGS. 9 and 10 denotes a weight bar provided at the lower edge of the screen 11.

  The other ends of the plurality of lifting cords 13 inserted into the internal space of the head rail 12 are guided to the internal space of the head rail 12 in one direction (leftward in FIGS. 9 and 10), and the end of the head rail 12 After being inserted into a stopper (not shown) which is a stopping means provided on the head rail 12, it is suspended from the end of the head rail 12 and connected to the operation knob 19. The stopper is configured to prohibit or allow the raising of the lifting / lowering cord 13 on the side where the operation knob 19 is provided (the operation knob 19 side). Specifically, when the stopper is lifted after lowering the lifting / lowering cord 13 on the operation knob 19 side, the stopper prohibits the lifting of the lifting / lowering cord 13 on the operation knob 19 side. Once the lifting / lowering cord 13 is lowered, the lifting / lowering cord 13 is allowed to rise again. Here, reference numeral 19 a in FIGS. 9 and 10 is a connecting string for connecting the operation knob 19 to the lower end of the screen 11.

  One end side of the lifting / lowering cord 13 that is built in the head rail 12 and is suspended from the corresponding predetermined cord insertion member 14 is attached to a plurality of cord rings 17 that are attached to the back surface of the screen 11 at predetermined intervals in the vertical direction. After being inserted and routed vertically downward, it is connected to the lowermost cord ring 17 attached to the lower end of the screen 11 via the cord locking tool 20 of the present invention. Accordingly, when the lifting / lowering cord 13 on the operation knob 19 side is raised, the lifting / lowering cord 13 on the side (screen 11 side) suspended from the cord insertion member 14 of the head rail 12 and connected to the screen 11 as shown in FIG. When the elevator cord 13 on the operation knob 19 side is lowered, the elevator cord 13 on the screen 11 side rises and the screen 11 can be lifted and folded as shown in FIG. .

  As shown in FIGS. 1 to 3, the cord locking tool 20 of the present invention for connecting the lower end of the lifting / lowering cord 13 on the screen 11 side to the lowermost cord ring 17 is provided on the screen side attached to the lower portion of the screen 11. A member 21, a cord side member 22 attached to the lower end of the lifting / lowering cord 13 on the head rail 11 side, and a coupling member 23 that removably couples the screen side member 21 and the cord side member 22 are provided. The screen side member 21 has a columnar base 21 a and a hook portion 21 b provided at the lower end of the base 21 a and engaged with the cord ring 17. The cord-side member 22 includes a rectangular plate-like base 22a, an insertion portion 22b formed on the upper end of the base 22a and capable of inserting the lifting cord 13 on the screen 11 side, and a base below the insertion portion 22b. And a winding portion 22c around which the lower part of the lifting / lowering cord 13 on the screen 11 side is wound. Further, the coupling member 23 includes a spherical body 23 a provided integrally with the screen side member 21 and a pair of elastically deformable sandwiching pieces 23 b, 23 c provided integrally with the cord side member 22. Of the pair of sandwiching pieces 23b and 23c, one sandwiching piece 23b is formed in a flat plate shape, and the other sandwiching piece 23c is formed in a curved plate shape that curves in one plane (two dimensions) along the outer surface of the spherical body 23a. Is done. And a pair of clamping pieces 23b and 23c are comprised so that the screen side member 21 and the cord side member 22 may be couple | bonded by clamping the spherical body 23a so that separation | detachment is possible. The screen side member 21 is a molded product formed of polyacetal (POM), polycarbonate (PC), or the like, and the base portion 21a, the hook portion 21b, and the spherical body 23a are integrally formed. Further, the cord side member 22 is a molded product formed of polyacetal (POM), polycarbonate (PC) or the like, and the base 22a, the insertion portion 22b, the winding portion 22c, and the pair of sandwiching pieces 23b and 23c are integrated. Formed.

  A through hole 23d capable of accommodating a part of the spherical body 23a is formed in one of the pair of sandwiching pieces 23b and 23c. The diameter of the through hole 23d is smaller than the diameter of the spherical body 23a. Further, in this embodiment, the coupling member 23 is provided integrally with the screen side member 21 in the vicinity of the spherical body 23a and has a disk-like body 23e having a larger diameter than the spherical body 23a and a pair of sandwiching pieces 23b and 23c. And a pair of abutting portions 23f, 23f that protrude from the front end of each. These contact portions 23f and 23f are formed so as to be separated from each other toward the tip. Further, the spherical body 23a is sandwiched between the pair of sandwiching pieces 23b and 23c, and the axis of the screen side member 21 and the axis of the cord side member 22 coincide with each other and these axes extend in a straight line. The outer peripheral edge of the disk-shaped body 23e is configured to contact the pair of contact portions 23f and 23f (FIG. 1). When the screen-side member 21 rotates around the spherical body 23a with respect to the cord-side member 22, either one or both of the pair of contact portions 23f and 23f are pressed against the outer peripheral edge of the disk-like body 23e. The pair of sandwiching pieces 23b and 23c are configured to be elastically deformed and spread.

  On the other hand, as shown in FIG. 1, FIG. 2, FIG. 7 and FIG. 8, the hook portion 21b of the screen side member 21 is formed in a U-shape into which the cord ring 17 can be inserted, and the upper opening is narrowed. Formed. Inside the hook portion 21b formed in a U-shape, two protrusions 21c that are vertically displaced above the cord ring 17 inserted therein and prevent the cord ring 17 from being detached from the hook portion 21b. , 21d are integrally formed. As shown in FIGS. 1, 2, 4, 7, and 8, an upper plate 22d that is bent at a right angle is formed at the upper end of the base 22a of the cord side member 22, and the upper plate 22d and the base plate 22d are connected to the upper plate 22d. An insertion portion 22b through which the lifting / lowering cord 13 is inserted is formed at a corner portion that is a joint portion of the base 22a. In this embodiment, the insertion portion 22b is a hole formed at the joint between the upper plate 22d and the base 22a, and the hole constituting the insertion portion 22b is formed relatively large so that the lifting / lowering cord 13 can be freely inserted. A slit 22e having one end opened in the insertion portion 22b made of the hole is formed in the upper plate 22d. The width of the slit 22e is formed to be the same as or slightly smaller than the outer diameter of the lifting / lowering cord 13, and the lifting / lowering cord 13 inserted through the insertion portion 22b can be press-fitted into the slit 22e.

  As shown in FIG. 1 to FIG. 3 and FIG. 5 to FIG. 7, the winding portion 22c of the cord side member 22 is vertically arranged on a base 22a between the insertion portion 22b and the pair of sandwiching pieces 23b and 23c. A rib-like object 22f that is long in the direction and a large-diameter portion 22g formed at the tip of the rib-like object 22f. The rib-like object 22 f is a portion around which the lower part of the lifting / lowering cord 13 is wound, and the height thereof is formed to be about twice the outer diameter of the lifting / lowering cord 13. The large-diameter portion 22g formed at the tip of the rib-like object 22f is for maintaining the lifting / lowering cord 13 wound around the rib-like object 22f around the rib-like object 22f. Is formed so as to have a larger outer shape than the lifting / lowering cord 13 wound around. On the base 22a facing the large-diameter portion 22g that exceeds the outer shape of the rib-like object 22f, protruding ridges 22h are formed vertically on the large-diameter portion 22g so as to be continuous with the upper and lower edges of the rib-like object 22f. Oppositely formed. The gap between the ridge 22h and the large-diameter portion 22g facing the ridge 22h is formed smaller than the outer diameter of the lifting / lowering cord 13, and when the lifting / lowering cord 13 is wound around the rib-like object 22f, the lifting / lowering cord 13 Is press-fitted into a gap between the protrusion 22h formed on the upper and lower sides of the rib-like object 22f and the large-diameter portion 22g, and the lifting cord 13 wound around the rib-like object 22f can be fixed to the winding part 22c. It is like that.

  As shown in FIGS. 1 to 3, an engagement piece 22i is erected on a base 22a between the insertion portion 22b and the winding portion 22c. The insertion portion 22b, the winding portion 22c, and the engagement piece 22i are integrally formed side by side in the vertical direction, and the engagement piece 22i is located between the insertion portion 22b and the winding portion 22c and crosses between them. And extending in the lateral direction. As shown in detail in FIG. 5, the engaging piece 22 i has a recess configured to press-fit the lifting / lowering cord 13 inserted into the insertion portion 22 b so that the lifting / lowering cord 13 can be engaged with the engaging piece 22 i. A groove 22j is formed. The concave grooves 22j in this embodiment are respectively formed on both sides of the engagement piece 22i so as to guide and press-fit the elevating cord 13 inserted through the insertion portion 22b in the lateral direction as shown in FIGS. An elevating cord 13 that hangs down after being press-fitted into the concave groove 22j is formed along the side wall of the rib-like object 22f. 1, 2, 4, and 8, the reference numeral 22 k extends in the longitudinal direction on the back surface of the base 22 a of the cord side member 22, and extends from the insertion portion 22 b toward the pair of sandwiching pieces 23 b and 23 c. It is a triangular rib having a substantially triangular plate shape that gradually increases in height. This triangular rib 22k prevents sinking from occurring on the back surface of the base 22a in order to prevent the locking tool 20 from being caught on the screen when the screen 11 is folded up, to reinforce the cord side member 22, and so on. It is provided to prevent warpage of the base 22a.

  A method for eliminating the slack of the lifting / lowering cord 13 on the screen 11 side using the cord locking device 20 configured as described above will be described. After the lifting / lowering cord 13 on the screen 11 side is inserted into the insertion portion 22b of the cord locking tool 20, the lifting / lowering cord 13 is guided in the lateral direction and press-fitted into the concave groove 22j formed in the engagement piece 22i. Accordingly, the lifting / lowering cord 13 can be temporarily fixed to the cord locking tool 20. For this reason, for example, the cord ring 17 is attached to the lower part of the screen 11 and the cord locking tool 20 is engaged with the code ring 17, and due to variations in attaching the cord ring 17 to the screen 11. Even if the mounting positions at the lower ends of the plurality of lifting / lowering cords 13 vary vertically, this is caused by moving the lifting / lowering cord 13 press-fitted into the concave groove 22j in the vertical direction while being press-fitted into the concave groove 22j. Variation can be eliminated. For this reason, it is relatively easy to change the position of the cord locking tool 20 attached to the lower end of the slacking lifting / lowering cord 13, and the slackening generated in the lifting / lowering cord 13 is compared by moving the position up and down. Can be easily eliminated.

  In order to move the screen 11 up and down in the roman shade 10 having the lower end of the lifting / lowering cord 13 attached to the lower portion of the screen 11 via the cord locking tool 20, the operation knob 19 is operated. For example, as shown in FIG. 10, when the screen 11 is raised, by pulling the operation knob 19 downward, the lifting cord 13 on the operation knob 19 side is pulled down, and the lifting code 13 on the screen 11 side is pulled down. The weight bar 18 rises and rises. At this time, the screen 11 is folded up and folded while forming a fold between the adjacent ridges 16. When the force pulling down the operation knob 19 is loosened, a stopper (not shown) prohibits the lifting / lowering cord 13 from being lifted, and the screen 11 is held up. When lowering the screen 11, the operation knob 19 is pulled slightly downward to allow the lifting cord 13 on the operation knob 19 side to rise, and then the operation knob 13 is gradually raised. As a result, the lifting cord 13 on the screen 11 side is lowered by the weight of the weight bar 18 and the screen 11, and the opening (not shown) of the house can be covered by the lowered screen 11 as shown in FIG. 9.

  On the other hand, even when a tensile load is applied in the direction in which the screen 11 is lifted or lowered in the direction in which the screen side member 21 is pulled away from the cord side member 22 (FIG. 1), Does not separate easily. As a result, the screen 11 can be raised and lowered smoothly. Further, when a bending load is applied in a direction in which the screen-side member 21 rotates about the spherical body 23a with respect to the cord-side member 22 (FIG. 2), either one or both of the pair of contact portions 23f, 23f is The pair of sandwiching pieces 23b and 23c are pressed against the outer peripheral edge of the disk-like body 23e, and are elastically deformed and spread. For this reason, the cord side member 22 and the screen side member 21 are quickly separated. As a result, the cord locking tool 20 and the lifting / lowering cord 13 can be prevented from being damaged, and children, the elderly and the like can be quickly released from the entanglement of the lifting / lowering cord 13. Further, since the through hole 23d capable of accommodating a part of the spherical body 23a is formed in one of the pair of holding pieces 23b and 23c, the diameter of the through hole 23d is changed to change the screen side member 21. The minimum value of the separation load between the cord side member 22, that is, the minimum value of the bending load and the minimum value of the tensile load can be set to desired values relatively accurately. Further, the screen-side member when the screen-side member 21 and the cord-side member 22 are separated by changing either one or both of the diameter of the disc-like body 23e or the distance between the pair of contact portions 23f, 23f. The rotation angle θ (FIG. 2) about the spherical body 23a with respect to the cord side member 22 of 21 can be set in a desired range.

<Second Embodiment>
11 to 13 show a second embodiment of the present invention. 11 to 13, the same reference numerals as those in FIGS. 1 to 3 denote the same components. In this embodiment, the coupling member 43 includes the spherical body 43a and the pair of sandwiching pieces 43b and 43c, but does not include the disk-shaped body and the pair of contact portions of the first embodiment. That is, in this embodiment, the cord locking device 40 includes a screen side member 41 in which a base portion 21a, a hook portion 21b, and a spherical body 43a are integrally formed, a base 22a, an insertion portion 22b, and a winding. A portion 22c and a cord side member 42 in which a pair of sandwiching pieces 43b and 43c are integrally formed are provided. The configuration other than the above is the same as that of the first embodiment.

  In the cord locking device 40 thus configured, when the screen side member 41 rotates around the spherical body 43a with respect to the cord side member 42, the base 21a of the screen side member 41 is In order to spread the pair of sandwiching pieces 43b and 43c, when the screen side member 41 and the cord side member 42 are separated, the rotation angle θ around the spherical body 43a with respect to the cord side member 42 of the screen side member 41 (FIG. 12). However, the overall length and the entire width of the cord locking device 40 can be made smaller than those of the first embodiment, and the cord locking device 40 can be made compact. it can. Since usage methods and operations other than those described above are substantially the same as those in the first embodiment, repeated description will be omitted.

  In the first and second embodiments, a through-hole capable of accommodating a part of a spherical body is formed in one of the pair of sandwiching pieces, but one spherical body is formed in the other or both of the pair of sandwiching pieces. You may form the through-hole which can accommodate a part. Here, when a through hole capable of accommodating a part of a spherical body is formed on the other of the pair of sandwiching pieces, the other sandwiching piece of the pair of sandwiching pieces is formed in a flat plate shape, and one sandwiching piece is a spherical body. It is formed in the shape of a curved plate that curves in one plane (two dimensions) along the outer surface. When a through-hole capable of accommodating a part of a spherical body is formed in both of the pair of sandwiching pieces, each of the pair of sandwiching pieces is formed into a curved plate shape that is curved in three dimensions so as to enclose a part of the spherical body. The In the first and second embodiments, the spherical body is provided integrally with the screen side member and the pair of sandwiching pieces are provided integrally with the cord side member. However, the spherical body is integrated with the cord side member. The pair of clamping pieces may be provided integrally with the screen side member. In the first embodiment, the disk-shaped body is provided integrally with the screen-side member in the vicinity of the spherical body, and the pair of holding pieces are provided integrally with the cord-side member. The disc-shaped body is provided integrally with the cord side member in the vicinity of the spherical body, and the pair of contact portions are provided at the tip ends of the pair of sandwiching pieces provided integrally with the screen side member. You may project. In the first and second embodiments, the lifting / lowering cord is guided in the longitudinal direction inside the head rail, and the cord locking device of the present invention is attached to the roman shade hanging downward from the end of the head rail. As described above, a plurality of drums that wind up the lifting / lowering cords are provided inside the head rail, and the lifting / lowering cords are moved up and down by rotating these drums. The cord locking tool of the invention may be used. Further, in the first and second embodiments, the case where a plurality of recumbent ribs are provided on the screen has been described, but the recumbent need not be provided. In this case, when the lifting / lowering cord is raised, the screen rises while drawing an arc that hangs between the lifting / lowering cord and the lifting / lowering cord.

DESCRIPTION OF SYMBOLS 10 Roman shade 11 Screen 12 Head rail 13 Lifting cord 20, 40 Cord locking tool 21, 41 Screen side member 22, 42 Cord side member 23, 43 Coupling member 23a, 43a Spherical body 23b, 23c, 43b, 43c Clamping piece 23d, 43d Through-hole 23e Disk-shaped body 23f Contact part

Claims (3)

A screen side member is attached to a lower portion of the screen having an upper end attached to the head rail, a cord side member is attached to a lower end of an elevating cord suspended from the head rail, and the screen side member and the code side member are coupling members. In the locking mechanism for the lifting and lowering cord of the roman shade configured to be detachably coupled by
The coupling member is
A spherical body provided integrally with the screen side member or the cord side member;
A pair of elastically deformable sandwiching pieces which are provided integrally with the cord side member or the screen side member and detachably sandwich the spherical body to couple the screen side member and the cord side member. An anchor for a lifting and lowering cord for a roman shade.   The locking tool for a lifting / lowering cord for a roman shade according to claim 1, wherein a part of the spherical body can be accommodated in one or both of the pair of sandwiching pieces, and a through hole having a smaller diameter than the spherical body is formed. . The coupling member is
A disk-like body that is provided integrally with the screen-side member or the cord-side member in the vicinity of the spherical body and has a larger diameter than the spherical body;
A pair of abutting portions that protrude from the ends of the pair of sandwiching pieces and are separated from each other toward the tip; and
When the screen-side member rotates around the spherical body with respect to the cord-side member, either one or both of the pair of contact portions are pressed against the outer peripheral edge of the disk-shaped body, The lifting / lowering cord locking tool for a roman shade according to claim 1 or 2, wherein the sandwiching piece is configured to be elastically deformed and spread.

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