JP6695680B2 - Balance weight - Google Patents

Description

  The present invention relates to a balance weight attached to the lower ends of a plurality of slats of a vertical blind.

  The vertical blind is capable of moving a plurality of slats suspended from a hanger rail along the hanger rail, and centering each slat on a rotation axis orthogonal to the longitudinal direction of the hanger rail. It can be rotated. A balance weight is attached to the lower end of each slat, and each balance weight is connected by a bottom cord. The swing weight of each slat is suppressed by connecting a balance weight with a bottom cord (see Patent Document 1).

  Each balance weight has a hooking portion to which a bottom cord is hooked. The hanging portion is composed of a hook portion and is integrally provided with the balance weight.

JP, 2006-249783, A

  However, in the vertical blind of Patent Document 1, since the hooking portion is integrally provided with the balance weight, a large pulling force is applied to the hooking portion such as when a resident accidentally steps on the bottom cord. If it is added to the, the latching part may be damaged.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a vertical blind capable of suppressing breakage of a latching portion even when a large tensile force is applied to the latching portion. To provide the balance weight of.

  The balance weight for solving the above-mentioned problems is a balance weight that is arranged at the lower ends of a plurality of slats provided in the vertical blind, and is a balance weight to which a bottom cord connecting between the adjacent slats is hung. A support body configured to be fastened to the lower end portion and a moving body movably supported with respect to the support body are provided. One member of the support body and the movable body includes a hole portion, and the other member includes a shaft portion inserted into the hole portion. The moving body includes a hooking portion to which the bottom cord is hooked. When the bottom cord hung on the latching portion receives a pulling force that is pulled downward, the shaft portion is displaced by being guided by the hole portion, whereby the latching portion is displaced downward, The moving body is separated from the support body, or the latch portion facing upward is displaced downward.

  The balance weight may further include a temporary fixing part for temporarily fixing the moving body to the support, and the temporary fixing part may be configured to release the temporary fixing when the bottom cord receives the pulling force. ..

  In the balance weight, the hooking portion may be formed by a hook having an opening end, and the opening end may face upward before receiving the pulling force.

  In the balance weight, the temporary fixing portion has a convex portion on one of the movable body and the support body, and has a concave portion that engages with the convex portion on the other member. However, the movable body may be temporarily fixed to the support body by engaging the convex portion and the concave portion.

  In the balance weight, the moving body may be rotatably attached to the support body and may be rotated by receiving the pulling force.

  In the balance weight, the support may be configured by abutting a pair of halves, and the moving body may be movably arranged in a guide portion formed between the pair of halves. ..

  According to the present invention, it is possible to provide a balance weight for a vertical blind that is capable of suppressing damage to the hanging portion even when a large pulling force is applied to the hanging portion.

The front view of the vertical blind in 1st embodiment. The exploded perspective view of the balance weight in a first embodiment. The exploded perspective view which expanded and showed the relationship between the support protrusion of a support body, the guide protrusion of a mobile body, and the lower end part of a slat. FIG. 6 is a plan view showing a state in which the support body and the moving body are oriented in the same direction. The top view which shows the state which the moving body rotated with respect to a support body. FIG. 6 is a plan view showing a state in which the moving body is detached from the support body. The perspective view which showed the relationship between the balance weight and the lower end part of a slat in a second embodiment. The disassembled perspective view which expanded and showed the relationship between the support body and the moving body in 2nd embodiment. The top view explaining operation | movement of the mobile body in 2nd embodiment. The top view of the balance weight of 3rd embodiment. The perspective view of the balance weight of 4th embodiment. Sectional drawing which shows the modification of 2nd embodiment.

Hereinafter, a vertical blind according to an embodiment will be described with reference to the drawings.
[First embodiment]
As shown in FIG. 1, in the vertical blind, a large number of runners 2 are supported in a hanger rail 1 so as to be movable along the longitudinal direction of the hanger rail 1, and slats 3 are suspended from each runner 2. Each slat 3 is rotatably attached to a rotating shaft in a hanging direction with respect to the hanger rail 1 provided in each runner 2.

  Operation cords 4 and 5 are suspended from one end of the hanger rail 1 in the longitudinal direction. When the drive shaft 6 in the hanger rail 1 is rotated based on the operation of the operation code 4, the leading runner 2 a moves in the hanger rail 1. Then, as the leading runner 2a moves, the succeeding runner 2 moves, and the pull-out operation and the convolution operation of each slat 3 are performed. Further, based on the operation of the operation cord 5, an angle adjusting shaft (not shown) in the hanger rail 1 is rotated, and the angles of the slats 3 are adjusted in phase via the gear mechanism in each runner 2.

  A balance weight 7 is attached to the lower end portion 3a of each slat 3, and each balance weight 7 is connected by a bottom cord 8 at equal intervals. As a result, the swing of the slats 3 is suppressed even when the slats 3 move. As shown in FIG. 2, the balance weight 7 has a rectangular plate shape as a whole, and is configured such that the lower end portion 3 a of the slat 3 is sandwiched between the support body 11 and the moving body 21. The support 11 and the moving body 21 form a pair, and have a rectangular shape having substantially the same shape and size. Further, the length of the balance weight 7 in the longitudinal direction is substantially the same as the width of the slat 3. Both the support 11 and the moving body 21 are made of synthetic resin, and, for example, at least one of the support 11 and the moving body 21 is provided with an iron plate or the like serving as a weight member. For example, an iron plate may be arranged on both the support 11 and the moving body 21, or an iron plate may be arranged on either one of the supporting body 11 and the moving body 21 and a magnet may be arranged on the other side. The moving body may be magnetically attracted.

  The inner surface of the support body 11 facing the moving body 21 is provided with a support protrusion 12 for fastening the support body 11 to the lower end portion 3 a of the slat 3. The support protrusion 12 has at least two semicircular arc shapes, is a protrusion protruding toward the inner surface facing the moving body 21, and is provided in the central portion of the inner surface of the support 11. The inside of the virtual circle formed by the two support protrusions 12 is a hole that guides the rotation of the moving body 21. The two support protrusions 12 are separated from each other and form two gaps 13 therebetween. The two gap portions 13 are opposed to each other, and here, are disposed so as to be opposed to each other in the lateral direction. This lateral direction is the vertical direction in which the slat 3 is suspended when the balance weight 7 is attached to the lower end portion 3a of the slat 3. The number of the gaps 13 may be at least one, and the one gap 13 may be arranged on the lower side in the vertical direction. The width W1 between the support protrusions 12 forming the gap portion 13 is larger than the width W2 of the guide protrusion 22 of the moving body 21 in the short side direction, and the guide protrusion 22 can pass therethrough. The gap 13 may be provided at least in the direction in which the guide protrusion 22 comes off due to the pulling force in the direction of the arrow D1.

  On the other hand, the lower end portion 3a of the slat 3 is provided with a support hole 14 for fixing the support body 11. The support hole 14 has substantially the same size as a virtual circle formed by the two support protrusions 12, and the two support protrusions 12 are fitted therein. The inner peripheral surfaces of the two support protrusions 12 form a guide surface 15 that guides the rotation of the moving body 21. The guide surface 15 of each support protrusion 12 is provided with a guide groove 15 a that prevents the moving body 21 from falling off from the support body 11. The guide groove 15a is arranged, for example, at a position of about half the height of the support protrusion 12 along the circumferential direction. The guide groove 15a is provided with a convex portion 16 at an intermediate position in the circumferential direction.

  An inner surface of the moving body 21 facing the support 11 is provided with a guide protrusion 22 as a shaft portion that guides rotation with respect to the support 11. The guide protrusion 22 is a protrusion protruding from the inner surface and has an elongated rectangular shape. The dimension of the long side of the guide protrusion 22 is matched with the inner diameter of an imaginary circle formed by the two support protrusions 12 forming the hole. The guide protrusion 22 is provided at the center in the lateral direction of the moving body 21 and at the center in the longitudinal direction so as to be parallel to the longitudinal direction. The width W2 of the guide protrusion 22 in the short side direction is set to a size that allows the gap 13 to pass through. Each short side surface of the guide protrusion 22 is formed of an arcuate surface corresponding to the guide surface 15 of the support protrusion 12, and further includes an engagement protrusion 23 that is engaged with the guide groove 15a. As shown in FIG. 3, the engagement protrusion 23 includes a recess 24 that is engaged with the protrusion 16. The convex portion 16 and the concave portion 24 form a temporary fixing portion. The temporary fixing position where the convex portion 16 and the concave portion 24 are engaged is a position where the support body 11 and the moving body 21 are aligned.

  In addition, the moving body 21 is provided with a hooking portion 25 to which the bottom cord 8 is hooked, at two corner portions formed by one long side and two short sides adjacent to the long side. The hanging portion 25 is configured by a hook portion having an open end 25a. The open end 25a faces upward when attached to the lower end 3a of the slat 3. A locking portion 25b that prevents the bottom cord 8 from coming off is disposed at a position that faces the front end portion of the latch portion 25 via the opening end 25a. The locking portion 25b is formed of, for example, a protrusion protruding toward the opening end 25a. An attachment ring 44 (see FIG. 1) is fixed to the bottom cord 8, and the attachment ring 44 is attached to the attachment stopper 25.

  In order to attach the balance weight 7 to the lower end 3a of the slat 3, the support protrusion 12 of the support 11 is inserted into the support hole 14 of the lower end 3a of the slat 3 when the support 11 and the moving body 21 are separated. Mated. Next, the moving body 21 is arranged in a state orthogonal to the support body 11, and the guide protrusions 22 are arranged in the two gap portions 13 which are located between the two support protrusion portions 12 and vertically face each other. Then, the moving body 21 is rotated in parallel with the support body 11. Then, the engagement protrusion 23 engages with the guide groove 15 a and rotates while being guided by the guide surface 15. Then, when rotated by 90 °, the convex portion 16 engages with the concave portion 24. As shown in FIG. 4, as a result, the moving body 21 is temporarily fixed to the support body 11 in a state in which the direction is aligned and holds the lower end portion 3 a of the slat 3. In this state, the hooking portion 25 of the moving body 21 has the open end 25a facing upward, and the mounting ring 44 of the bottom cord 8 is hooked. Then, the moving body 21 is separated in the direction in which the moving body 21 is separated from the support body 11 when the slat 3 is moved, because the engaging projection 23 is engaged with the guide groove 15a. Is suppressed. Further, the convex portion 16 is engaged with the concave portion 24, so that the moving body 21 is prevented from rotating with respect to the support body 11.

Next, the operation of the vertical blind configured as above will be described.
Since the bottom cord 8 is arranged at the lower end portion 3a of the slat 3, the user may accidentally step on it, or the foot may get caught. As shown in FIG. 5, in such a case, the bottom cord 8 is pulled so that a pulling force is applied to the latch portion 25. Then, under the pulling force of the bottom cord 8, the moving body 21 rotates with respect to the support body 11 while the guide protrusion 22 is guided by the guide surface 15 of the support protrusion 12. As a result, the hooking portion 25 is displaced from the state in which the open end 25a faces upward to the state in which it faces sideways, and the pulling force applied from the bottom cord 8 to the hooking portion 25 is moderated. Here, in order to restore the orientation of the moving body 21 with respect to the support body 11, the moving body 21 may be manually rotated again so that the orientation thereof is aligned with the support body 11.

  As shown in FIG. 6, when the moving body 21 further rotates with respect to the support body 11, the engaging protrusion 23 of the guide protrusion 22 is located in the gap 13 and is disengaged from the guide groove 15 a. As a result, the guide protrusion 22 is pulled out from the gap 13 located on the lower side, and the moving body 21 is separated from the support body 11. As a result, the pulling force applied from the bottom cord 8 to the hook portion 25 is almost eliminated. In order to return the movable body 21 to the support body 11, the movable body 21 may be attached to the support body 11 again as described above.

The vertical blinds as described above can obtain the effects listed below.
(1) When the pulling force is applied from the bottom cord 8 to the hooking portion 25, the moving body 21 rotates with respect to the support body 11, and the hooking portion 25 is displaced downward in the vertical direction. Thereby, the force applied to the latch portion 25 can be softened, and the latch portion 25 can be prevented from being damaged by the pulling force.
(2) When the engaging protrusion 23 of the guide protrusion 22 is located in the gap 13, the moving body 21 is disengaged from the support 11. As a result, it is possible to prevent the latch portion 25 from being damaged.
(3) By suppressing the breakage of the latch portion 25 by (1) and (2), the moving body 21 is less likely to be damaged, and the frequency of parts replacement of the moving body 21 can be reduced.

(4) The moving body 21 and the mounting structure for the support body 11 are simple structures, and the moving body 21 can be easily mounted to the support body 11.
(5) By engaging the convex portion 16 with the concave portion 24, it is possible to prevent the moving body 21 from rotating with respect to the support body 11 when the slat 3 is moved.
(6) When the moving body 21 rotates with respect to the support 11, the open end 25a of the hooking portion 25 faces sideways, so that the bottom cord 8 easily comes off the hooking portion 25, and the hooking portion 25 It is possible to suppress damage.

[Second embodiment]
As shown in FIG. 7, the balance weight 7 of the second embodiment includes a support body 31 configured by abutting a pair of a first half body 31a and a second half body 31b each having a rectangular plate shape. There is. The first half body 31a and the second half body 31b are rotatably connected via a linear thin portion 32 along the long side of the lower end portion. When the first half body 31a and the second half body 31b are folded around the thin portion 32 as a pivot, the lower end portion 3a of the slat 3 is sandwiched. The first half body 31a and the second half body 31b are made of synthetic resin, and an insertion hole 33 for inserting the lower end portion 3a of the slat 3 is formed at the upper end portion thereof. Then, the outer surface of the support body 31 is covered with the lower end portion 3a inserted into the insertion hole 33, and the leading end portion of the lower end portion 3a of the slat 3 is further sandwiched between the first half body 31a and the second half body 31b to balance the balance. The weight 7 is held by the lower end portion 3a.

  A moving body 34 is rotatably attached to both corners of the upper end of the support 31. As shown in FIG. 8, the first half body 31a that constitutes the support 31 includes an arrangement portion 36 that includes a support shaft 35 as a shaft portion that supports the moving body 34 in a portion that protrudes outward. .. Further, the second half body 31b includes a cutout portion 37 that exposes the support shaft 35 and the arrangement portion 36 to the outside. The moving body 34 includes a rotating portion 41 having a fan shape, and a hooking portion 42 formed integrally with the rotating portion 41. The rotating portion 41 has a shaft hole 43 as a hole portion into which the support shaft 35 is inserted.

  Further, the side surface of the cutout portion 37 is an arcuate surface so that the moving body 34 arranged in the arrangement portion 36 rotates, and a guide surface 37 a that guides the rotation of the moving body 34 is configured. The guide surface 37a is provided with a guide groove 37b that prevents the moving body 34 from falling off from the arrangement portion 36. The guide groove 37b is, for example, arranged at a position that is about half the height of the guide surface 37a along the circumferential direction. The guide groove 37b has a recess 37c in the circumferential direction.

  On the other hand, the outer surface of the rotating portion 41 facing the guide surface 37a has an arcuate surface corresponding to the arcuate surface of the guide surface 37a, and constitutes the rotation guide surface 41a. The rotation guide surface 41a is provided with an engagement protrusion 41b in the circumferential direction. The engagement protrusion 41b includes a convex portion 41c that is engaged with the concave portion 37c. The convex portion 41c and the concave portion 37c form a temporary fixing portion. The temporary fixing position where the convex portion 41c and the concave portion 37c are engaged is a position where the rotating portion 41 is accommodated in the arrangement portion 36 and the convex portion 41c and the concave portion 37c are engaged and temporarily fixed.

  The rotating portion 41 is provided with a hooking portion 42 to which the mounting ring 44 of the bottom cord 8 is hooked so as to protrude from the disposing portion 36 to the outside when the moving body 34 is in the temporarily fixed state. The hanging portion 42 is configured by a hook portion having an opening end 42a. The open end 42a faces upward in the temporarily fixed state. A locking portion 42b for preventing the bottom cord 8 from coming off is provided at a position facing the tip end portion of the latch portion 42 via the opening end 42a.

  To attach the movable body 34 to the support 31, the support shaft 35 arranged in the arrangement portion 36 of the support 31 is inserted into the shaft hole 43 of the movable body 34. At the same time, the engaging protrusion 41b of the moving body 34 is engaged with the guide groove 37b arranged on the side surface of the cutout portion 37, and the moving body 34 is engaged with the support body 31 by the convex portion 41c and the concave portion 37c. Rotate until As a result, the moving body 34 is temporarily fixed in a state where it is accommodated in the arrangement portion 36. In this state, the latching portion 42 of the moving body 34 has the open end 42a facing upward, and the mounting ring 44 of the bottom cord 8 is latched to the latching portion 42.

  Next, the operation of the balance weight 7 of the second embodiment configured as described above will be described. As shown in FIG. 9, the moving body 34 has a direction in which the moving body 34 is separated from the support body 31 when the slat 3 is moved, because the engagement protrusion 41b is engaged with the guide groove 37b. It is suppressed to be separated into. Further, the convex portion 41c is engaged with the concave portion 37c, so that the moving body 34 is prevented from rotating with respect to the support body 31 when the slat 3 is moved.

  As shown by the chain double-dashed line in FIG. 9, when a pulling force is applied to the latching portion 42, the moving body 34 receives the pulling force of the bottom cord 8 and moves with respect to the arrangement portion 36 of the support 31. The rotation guide surface 41a rotates while being guided by the guide surface 37a. As a result, the latch portion 42 is displaced from the state in which the open end 42a faces upward to the state in which it faces downward, and the pulling force applied from the bottom cord 8 to the latch portion 42 is moderated. Further, since the open end 42a faces downward, the bottom cord 8 is easily removed from the hooking portion 42. As a result, the latch portion 42 is prevented from being damaged by the pulling force. Here, in order to return the direction of the moving body 34 to the supporting body 31 to the original, the moving body 34 may be manually rotated so as to be aligned with the supporting body 31. In the second embodiment, the engaging protrusion 41b does not come off the guide groove 37b even when the moving body 34 rotates due to the pulling force.

The balance weight 7 as described above can obtain the same effects as the effects described in the above (1) and can further obtain the following effects.
(7) Since the moving body 34 is arranged in the arrangement portions 36 at both corners of the upper end portion of the support body 31, even when the hooking stopper 42 rotates downward, the hooking stopper 42 hits the floor and is damaged. Can be suppressed.
(8) The moving bodies 34 arranged in the arrangement portions 36 at both corners at the upper end of the support body 31 are located inside and outside the room, respectively. Even in such a case, since the moving body 34 and the arranging section 36 are independently configured at both corners of the upper end portion of the balance weight 7, the moving body 34 may move the arranging section 36 inside the room. Also, the influence on the moving body 34 located outside the room can be reduced. That is, it is possible to prevent the moving body 34 located outside the room from moving under the influence of the moving body 34 inside the room.
(9) The moving body 34 can be a common component at both corners of the upper end of the balance weight 7.

[Third embodiment]
The third embodiment is a modification of the second embodiment. As shown in FIG. 10, in the third embodiment, the convex portion 41c forming the temporary fixing portion is provided on the inner peripheral surface of the shaft hole 43 as a hole portion, and the concave portion 37c engaging with the convex portion 41c is provided in the shaft portion. Is provided on the outer peripheral surface of the support shaft 35. With such a configuration as well, the moving body 34 can be temporarily fixed to the temporary fixing position accommodated in the arrangement portion 36 of the support 31.

  Further, in the third embodiment, the length of the engagement protrusion 41b in the circumferential direction is shorter than that in the second embodiment so that the moving body 34 is disengaged with respect to the support body 31, and the latching portion is provided. When 42 is displaced downward, the engaging protrusion 41b is disengaged from the guide groove 37b.

  When the moving body 34 is separated from the support 31, the moving body 34 may be lost. Therefore, the support 31 and the moving body 34 may be connected by a connecting member 45 such as a string. For example, one end of the connecting member 45 is fixed to the moving body 34 by a fixing means such as an adhesive, and the other end is similarly fixed to the support 31. Thereby, even when the moving body 34 is separated from the support body 31, it can be prevented from being lost.

[Fourth Embodiment]
In the fourth embodiment, the moving body is linearly displaced with respect to the support. As shown in FIG. 11, the supporting body 51 has a rectangular plate shape as a whole, and the moving body 61 is movably arranged inside the side edge portions 52 on both sides along the lateral direction which is the vertical direction. Has been done. Like the second embodiment, the support body 51 is configured by abutting a pair of first half body 51a and second half body 51b, and slats are provided between the first half body 51a and the second half body 51b. The lower end portion 3 a of the movable body 61 is sandwiched between the guide portions 53 and serves as a moving space for the moving body 61. The guide portion 53 sandwiches the moving body 61 between the inner surfaces of the first half body 51a and the second half body 51b that face each other, and guides the linear movement of the moving body 61. Further, in the guide portion 53, a guide hole 54 as a hole portion is arranged along the moving direction of the moving body 61, that is, linearly. The guide holes 54 are preferably arranged on each surface of the support 51. The guide portion 53 and the guide hole 54 are opened at their lower ends so that the moving body 61 can be dropped. At the lower end, convex portions 56 serving as temporary fixing portions are arranged so as to face each other. ing. Further, an exposure hole 55 is arranged at a side edge portion along the lateral direction of the support body 51. The convex portion 56 may be arranged immediately below the guide shaft 62 of the moving body 61 shown by the solid line in the figure so that the moving body 61 can be temporarily fixed at an initial position before being displaced by a tensile force.

  The moving body 61 is arranged in the guide portion 53. The moving body 61 is provided with a guide shaft 62 as a shaft portion that engages with the guide hole 54. By engaging the convex portion 56, the guide shaft 62 suppresses the moving body 61 from falling from the guide portion 53, and when a strong tensile force is applied, the guide shaft 62 passes between the two opposing convex portions 56. To do. Further, the moving body 61 includes a hooking portion 63 which is exposed from the exposure hole 55 and to which the mounting ring 44 of the bottom cord 8 is hooked. Since the hanging portion 63 moves linearly in the vertical direction, the opening end faces upward. The hooking portion 63 has substantially the same configuration as the hooking portions 25 and 42 described above.

  Next, the operation of the balance weight 7 of the fourth embodiment configured as described above will be described. In the state where the slat 3 is moved, the moving body 61 is pressed against the inner surfaces of the guide portion 53 facing each other, and is held at the upper end portion of the guide portion 53 by the pressure contact force. When a pulling force is applied to the latch portion 63, the moving body 61 displaces the guide portion 53 downward due to the tensile force of the bottom cord 8, and the latch portion 63 is also displaced in the same direction. Accordingly, the pulling force applied from the bottom cords 8 is relieved, and the hooking portions 63 are prevented from being damaged by the pulling force. Here, in order to restore the position of the moving body 61 with respect to the support body 51, the moving body 61 may be manually displaced again to the upper end portion of the guide portion 53.

  When the moving body 61 is further pulled by the bottom cord 8, the guide shaft 62 passes between the opposed convex portions 56, and thus the moving body 61 is disengaged from the guide portion 53. As a result, the pulling force applied from the bottom cord 8 to the latch portion 63 is almost eliminated, and the latch portion 63 is prevented from being damaged. After the moving body 61 is disengaged from the support body 51, the moving body 61 may be inserted again through the opening at the lower end of the guide portion 53 of the support body 51 as described above. With the balance weight 7 as described above, the same effects as those described in the above (1) can be obtained.

The balance weight 7 as described above may be appropriately modified and implemented as follows.
[Other modifications]
-In any of the first embodiment to the fourth embodiment described above, the latching portion has the opening end facing upward, but the opening end may face downward, or in any other direction. You may face. When the opening end faces downward, it is preferable to provide a locking portion such as a protrusion that locks the bottom cord 8 or narrows the width of the opening end in the hanging portion so that the bottom cord 8 does not come off easily. ..
The shape of the hooking portion is not particularly limited as long as the bottom cord 8 can be hooked. For example, the locking portions 25b and 42b may be omitted.
-The amount of displacement until the moving body is disengaged from the support body when the latch portion is pulled and displaced downward is not particularly limited, but the larger the displacement amount, the more difficult the moving body is to disengage from the support body. It is possible to reduce the troublesomeness of attaching the moving body to the support.
The direction of the opening end when the hooking portion is pulled and displaced downward is not particularly limited. That is, when the latching portion is pulled and displaced downward, the open end of the latching portion may face diagonally upward, sideways, or diagonally downward. ..

  In the first embodiment, the convex portion 16 forming the temporary fixing portion may be provided on the engaging projection 23 of the moving body 21, and the concave portion 24 may be provided on the guide groove 15a of the support body 11. Further, in the second embodiment, the concave portion 37c may be provided in the engaging protrusion 41b of the moving body 21, and the convex portion 41c may be provided in the guide groove 37b of the support body 11. Further, in the third embodiment, the convex portion 41c may be provided on the outer peripheral surface of the support shaft 35, and the concave portion 37c may be provided on the inner peripheral surface of the shaft hole 43.

-The temporary fixing portion may temporarily fix the moving body at the initial position before the moving body is displaced by the pulling force as in the first to third embodiments, or as in the fourth embodiment. Alternatively, it may be temporarily fixed just before it is removed from the support. Further, the temporary fixing portions may be provided at a plurality of places within the range in which the moving body is displaced.
-As described in the above-described first to fourth embodiments, it is not necessary to provide the temporary fixing portion composed of the concave portion and the convex portion.
In this case, for example, in the first embodiment, the guide protrusion 22 is not used in the normal use such as moving the slat 3 by the pressure contact force between the arc-shaped surface of each short side of the guide protrusion 22 and the guide surface 15. By setting the pressure contact force so that the support protrusion 12 does not rotate, it can be used in place of the temporary fixing portion.
Also in the second and third embodiments, the pressure contact force between the guide surface 37a and the rotation guide surface 41a should be set to such a pressure that the moving body 34 does not rotate with respect to the support body 31 in normal use. Can be used instead of the temporary fixing part. The pressure contact force may be adjusted by friction between the outer peripheral surface of the support shaft 35 and the inner peripheral surface of the shaft hole 43.
Further, also in the fourth embodiment, the pressure contact force for sandwiching the moving body 61 between the first half body and the second half body is set so that the moving body 34 does not move with respect to the support body 31 in normal use. It can be used instead of the temporary fixing part.

The balance weight 7 may be sewn to the lower end portion 3a of the slat 3 or fixed with an adhesive or the like. That is, the balance weight 7 may be fixed to the lower end portion 3a of the slat 3 with any structure.
-The moving body does not have to be finally separated from the support body as in the second embodiment. This is because the pulling force can be alleviated only by moving the hooking portion downward, and the possibility of damaging the hooking portion is reduced.
Instead of arranging the shaft portion on the support and the hole portion on the moving body, the hole portion may be arranged on the support body and the shaft portion may be arranged on the moving body. For example, in the first embodiment, the guide protrusion 22 as the shaft portion may be arranged on the support body 11, and the support protrusion portion 12 as the hole portion may be arranged on the moving body 21. Further, in the second and third embodiments, the support body 31 may be provided with the shaft hole 43 as a hole portion, and the movable body 34 may be provided with the support shaft 35 as a shaft portion. In the fourth embodiment, the guide shaft 62 as a shaft portion may be arranged on the support body 51, and the guide hole 54 as a hole portion may be arranged on the moving body 61.
In the first embodiment, the shape of the guide protrusion 22 is not limited to the elongated rectangular shape. For example, only the portion where the engagement protrusion 23 is provided is a protrusion with respect to the inner surface of the moving body 21, and two protrusions are provided. A space between the parts may be a flat part that is flush with the inner surface. Further, the middle portion may have a wide barrel shape. That is, the engagement protrusion 23 is not particularly limited as long as it has a shape that can function as a shaft portion.
In the first embodiment, the support hole 14 arranged at the lower end portion 3a of the slat 3 has a large hole or slat having a rattling with respect to the virtual circle formed by the two support protrusions 12. Alternatively, the lower end portion 3a of the lower end portion 3 may be formed as a U-shaped cutout portion having an open edge portion. In such a case, the support protrusion 12 does not have a function of being fixed to the lower end portion 3a of the slat 3, and the lower end portion 3a of the slat 3 cannot be accurately positioned with respect to the balance weight 7. Therefore, a plurality of protrusions are arranged on the inner surface of the support body 11 facing the moving body 21 and around the virtual circle, and the lower end portion 3a of the slat 3 is hooked on the plurality of protrusions to slat the support body 11. It may be configured to be fastened to the lower end portion 3a of 3.
In the second embodiment and the third embodiment, when the support shaft 35 is inserted into the shaft hole 43, the support member 35 is caulked, or the retaining member is attached to the support shaft 35 so that the moving body 34 is disposed in the arrangement portion. It may be configured so as to prevent it from coming off from 36.

-In 2nd embodiment, the arrangement | positioning part 36 which arrange | positions the moving body 34 is good also as a structure which does not protrude from the side edge part of the support body 31 of the up-down direction. As shown in FIG. 12, in this case, the movable body 34 is rotatably attached to both corners of the upper end portion of the support body 31 formed by butt-joining the first half body 31a and the second half body 31b. A guide portion 38, which is a space portion, is configured. In the first half body 31a, a portion that constitutes the guide portion 38 is the arrangement portion 36 in which the support shaft 35 is arranged and the movable body 34 is rotatably arranged. The moving body 34 includes a rotating portion 41 and a latch portion 42, and the support shaft 35 is inserted into the shaft hole 43 of the rotating portion 41. In addition, an exposure hole 46 that exposes the latching portion 42 to the outside is disposed on the side surface portion of the support body 31 in the lateral direction. The exposure hole 46 is provided in the vertical direction of the side surface portion over the moving range of the latch portion 42. The latching portion 42 is located at the upper end portion of the exposure hole 46 in the initial position, and when pulled by the bottom cord 8, the latching portion 42 is displaced toward the lower end portion. Such a balance weight has a rectangular overall shape, and the arrangement portion does not project with respect to the rectangular shape, so that the shape can be simplified.
-In the second embodiment, the moving body 34 may be configured to drop from the placement portion 36. In this case, the engagement protrusion 41b may be disengaged from the guide groove 37b when the latch 42 is displaced to the lowest position.
-In the first embodiment, the second embodiment, and the fourth embodiment as well, the support and the moving body may be connected by a connecting member such as a string so that the moving body separated from the support is not lost. Good.
-The bottom cord 8 does not need to include the attachment ring 44. In this case, the bottom cord 8 is directly hooked on the hooking portion.

  1 ... Hanger rail, 2 ... Runner, 2a ... Leader runner, 3 ... Slat, 3a ... Lower end part, 4, 5 ... Operation code, 6 ... Drive shaft, 7 ... Balance weight, 8 ... Bottom code, 11 ... Support body, 12 ... Support protrusion, 13 ... Gap, 14 ... Support hole, 15 ... Guide surface, 15a ... Guide groove, 16 ... Convex part, 21 ... Moving body, 22 ... Guide protrusion, 23 ... Engagement protrusion, 24 ... Recessed portion, 25 ... Locking portion, 25a ... Open end, 25b ... Locking portion, 31 ... Supporting body, 31a ... First half body, 31b ... Second half body, 32 ... Thin portion, 33 ... Insertion hole, 34 ... Moving body, 35 ... Support shaft, 36 ... Arrangement portion, 37 ... Notch portion, 37a ... Guide surface, 37b ... Guide groove, 37c ... Recessed portion, 38 ... Guide portion, 41 ... Rotating portion, 41a ... Rotation guide surface, 41b ... Engaging projections, 41c ... Convex part, 42 ... Latch part, 42a ... Open end, 42b ... Locking part, 43 ... Shaft hole, 44 ... Mounting ring, 45 ... Connecting member, 46 ... Exposed hole, 51 ... Support , 51a ... First half body, 51b ... Second half body, 52 ... Side edge portion, 53 ... Guide portion, 54 ... Guide hole, 55 ... Exposure hole, 56 ... Convex portion, 61 ... Moving body, 62 ... Guide shaft , 63 ... Locking part.

Claims (6)

A balance weight arranged at the lower ends of a plurality of slats provided in the vertical blind, and a bottom cord connecting between the adjacent slats is hung,
A support configured to be fastened to the lower end of the slat,
A movable body rotatably supported with respect to the support body;
One of the members of the support body and the moving body includes a hole portion, the other member includes a shaft portion inserted into the hole portion,
The moving body includes a hooking portion to which the bottom cord is hooked,
When the bottom cord hung on the hanging portion receives a pulling force pulled downward, the shaft portion is rotated by being guided by the hole portion, whereby,
The hooking portion is displaced downward, the moving body is separated from the support body,
Or
A balance weight in which the hook portion facing upward is displaced downward. Further comprising a temporary fixing portion for temporarily fixing the moving body to the support body,
The balance weight according to claim 1, wherein the temporary fixing portion is released from the temporary fixing when the bottom cord receives the pulling force. The hooking portion is composed of a hook portion having an open end,
The balance weight according to claim 1 or 2, wherein the opening end faces upward before receiving the pulling force. The temporary fixing portion has a convex portion on any one of the movable body and the support body, and has a concave portion that engages with the convex portion on any other member.
The balance weight according to claim 2, wherein the movable body is temporarily fixed to the support body by engaging the convex portion and the concave portion.   A balance weight arranged at the lower ends of a plurality of slats provided in the vertical blind, and a bottom cord connecting between the adjacent slats is hung,
  A support configured to be fastened to the lower end of the slat,
  In a side edge portion extending in the up-down direction of the support body, a moving body supported so as to be linearly movable from the side near the upper end portion of the support body toward the lower end portion,
  The support includes a hole that extends in the vertical direction and has a lower end opened, and the moving body includes a shaft that is inserted into the hole.
  The moving body includes a hooking portion to which the bottom cord is hooked,
  When the bottom cord hung on the hanging portion receives a pulling force that is pulled downward, the shaft portion is displaced downward by being guided by the hole portion.
  The latching portion is displaced downward, and the moving body is disengaged from the lower end portion of the support body.
  Balance weight. The support is formed by abutting a pair of halves,
The balance weight according to claim 5 , wherein the movable body is movably arranged in a guide portion formed between the pair of halves.