JP6266640B2 - Code equalizer, shielding device - Google Patents

Description

  The present invention relates to a horizontal blind, a raised curtain, a pleated screen, a roll-up screen, a vertical blind, a curtain rail, an accordion curtain, a vertical pleated screen, a vertical roll screen, a panel curtain and the like, and such a shield. The present invention relates to a code equalizer used in a device.

In the shielding device, there is a type in which the up / down or left / right opening / closing operation with respect to the opening is performed by so-called stringing. In the type that opens and closes up and down, for example, one end of a plurality of lifting cords is attached to a bottom rail (moving member) provided under a slat or fabric (shielding material, moving member) suspended from a support member (head box). The other end of the plurality of lifting / lowering cords is routed around the head box and is gathered and suspended at one end of the head box. By pulling or pulling back the lifting / lowering cord portion on the other end, the knob (cord equalizer) provided on the lifting / lowering cord portion on the other end, or a separate operation cord connected to the lifting / lowering cord end on the other end side The raising / lowering operation of the shielding material is performed. One that opens and closes left and right is, for example, one end of a plurality of tension cords attached to the leading runner or moving rod provided on the moving leading side of the shielding material suspended from the hanger rail, and the other end of the plurality of tension cords Is routed around the heel and the support member (head rail), and is gathered and suspended at one end of the head rail or a wall fixing rod. By pulling or pulling back the tension cord on the other end, the knob (cord equalizer) provided on the tension cord on the other end, or a separate operation cord connected to the end of the other end The opening / closing operation of the shielding material to the left and right is performed. Some movements in one direction are operated in an anti-automatic manner by using an urging means such as a weight or a spring.
(For example, refer to Patent Document 1 as a type that opens and closes up and down).

JP-A-8-189270

In Patent Document 1, the ends of a plurality of tension cords are connected to a safety cover, and the safety cover is provided with an opening larger than the cord hooking means (slot) and the tension cord knot, and the child pushes the neck between the plurality of tension cords. However, a technique is disclosed in which the knot is displaced in the direction of the opening and automatically comes off. In such a configuration, there is a possibility that the knot will not be displaced reliably, and there is room for improvement in reliability.
Therefore, there is a demand for a technique that can reliably remove a catch of a person or the like or can surely attenuate a load on the person or the like in an emergency.

  The present invention has been made in view of such circumstances, and provides a string-type shielding device that can reliably remove foreign matter or attenuate a load on a person or the like.

  According to the present invention, a cord equalizer that holds a plurality of tension cords suspended from a support member installed in a building, wherein the cord equalizer has the plurality of tension cords substantially parallel to each other. When the downward load is applied to the cord equalizer, the plurality of tensile cords are held, and when the load is applied to the tensile cord in a direction to expand the plurality of tensile cords, the cord equalizer is elastic. A cord configured to release the loop structure formed by the plurality of tensile cords and the cord equalizer by causing deformation or splitting the cord equalizer or to increase the length of the loop structure An equalizer is provided.

  In the configuration of the present invention, when a load is applied in a direction in which a plurality of tensile cords are expanded, the load is used to cause elastic deformation in the cord equalizer or the cord equalizer is divided, thereby The loop structure formed by the tension cord of the book and the cord equalizer is released or the circumference of the loop structure is extended. With such a configuration, it has been found that foreign matter catching can be reliably removed or a load on a person or the like can be attenuated, and the present invention has been completed.

Hereinafter, various embodiments of the present invention will be exemplified. The following embodiments can be combined with each other.
Preferably, the cord equalizer includes a plurality of members each holding the tensile cord, and the plurality of members are subjected to a downward load applied to the cord equalizer in a state where the plurality of tensile cords are substantially parallel to each other. The loop structure is configured to be separated from each other when a load is applied to the plurality of tension cords in a direction in which the plurality of tension cords are expanded.
Preferably, the number of the tension cords that can be held by the cord equalizer is equal to the number of the plurality of members, or is larger than the number of the plurality of members, and the number of the tension cords that can be held by the cord equalizer. Is greater than the number of the plurality of members, the cord equalizer is capable of detaching at least one of the tension cords from the cord equalizer through a gap between the plurality of members generated by separating the plurality of members from each other. Configured as follows.
Preferably, at least one of the plurality of members is provided with a lifting / lowering cord guide surface that guides the tensile cord to a boundary surface of the plurality of members.
Preferably, the code equalizer includes a central member and one or a plurality of engaging members engaged with the central member, and the central member is spaced apart from each other along the central axis and the central axis. An upper locking portion and a lower locking portion are provided, and the engaging member is engaged with the central member between the upper locking portion and the lower locking portion.
Preferably, the engagement member is engaged with the central axis.
Preferably, the code equalizer includes a central member and first and second engaging members that engage with the central member, and the first and second engaging members extend from the base and the base, respectively. The first and second engaging members are engaged with the central member so that the arms of the first engaging member and the second engaging member are aligned in the vertical direction.
Preferably, the distal end surface of one of the first and second engaging members is in contact with the distal end surface of the other base of the first and second engaging members.
Preferably, the cord equalizer includes a case, a cord holding member engaged with the case, and a slide member for reducing a holding force of engagement between the cord holding member and the case, The cord holding member holds the plurality of tension cords in the engaged state with the case to form a loop structure, and the loop structure is released in the released state from the case. And the sliding member slides relative to the case when a load is applied to the plurality of tension cords in a direction in which the plurality of tension cords are expanded. And the cord holding member is separated from the case.
Preferably, the slide member has a cord weight detection unit that detects a load applied to the cord.
Preferably, the slide member is biased in a direction away from the case.
Preferably, the case includes a case side engaging portion, the cord holding member includes a cord holding member side engaging portion that engages with the case side engaging portion, and the slide member is moved by the sliding movement. The holding force of the engagement is reduced by displacing the cord holding member side engaging portion or releasing the suppression of the displacement of the cord holding member side engaging portion.
Preferably, the case side engaging portion is an engaging shaft, and the cord holding member side engaging portion is a pair of elastic arms that engage with the engaging shaft so as to sandwich the engaging shaft, The slide member slides a slide portion disposed between the pair of elastic arms to widen an interval between the pair of elastic arms, thereby reducing the holding force of the engagement.
Preferably, the case side engaging portion includes a tapered surface that protrudes from the inner surface of the case and is inclined upward toward the radial center of the case, and the cord holding member side engaging portion is formed on the tapered surface. It is an elastic arm to be engaged, and the slide member includes a slide portion that is provided on the opposite side of the tapered surface across the elastic arm and changes an engagement force between the tapered surface and the elastic arm.
Preferably, the slide part includes a tapered surface inclined upward toward the elastic arm.
Preferably, the slide member has a cylindrical shape, the cord holding member is accommodated in the slide member, and the cord holding member has a partition wall between the cord holding portion holding the tensile cord and the elastic arm. The rib is provided upright on the elastic arm side of the partition wall.
Preferably, the cord holding member is configured to hold one tensile cord in a state where the engagement with the case is released.
Preferably, the cord holding member is configured to be able to temporarily fix the plurality of tensile cords in a state where the engagement with the case is released.
Preferably, each of the plurality of tensile cords includes a locking portion, and the cord equalizer is configured to apply the downward load to the cord equalizer with the plurality of tensile cords substantially parallel to each other. It is configured to hold the locking portion and release the holding of the locking portion when a load is applied to the plurality of tension cords in a direction in which the plurality of tension cords are expanded.
Preferably, the cord equalizer includes an equalizer body and an elastically deformable cover, and the equalizer body includes a plurality of insertion grooves through which the tension cord can be inserted and the locking portion cannot be inserted. An engaging portion accommodating portion capable of accommodating the engaging portion, and the cover is attachable to the equalizer main body so as to cover the engaging portion accommodating portion, and the engaging portion is elastic of the cover. It is held in the locking portion accommodating portion by force.
Preferably, the plurality of tensile cords are accommodated one by one in the insertion groove, and the equalizer main body is subjected to a downward load applied to the cord equalizer with the plurality of tensile cords substantially parallel to each other. A locking portion holding surface for holding the locking portion.
Preferably, the locking portion holding surface includes a flat surface that is substantially perpendicular to the longitudinal direction of the tensile cord, or a tapered surface that faces inward in the radial direction of the equalizer body.
Preferably, the equalizer body includes a tapered surface that guides the locking portion radially outward when a load is applied to the plurality of tension cords in a direction in which the plurality of tension cords are expanded.
Preferably, the cord equalizer includes a plurality of insertion grooves through which the tensile cord can be inserted and the locking portion cannot be inserted, and the insertion groove is configured to elastically hold the tensile cord. Is done.
Preferably, the code equalizer is configured to hold an operation code for pulling down the code equalizer from below.
Preferably, the cord equalizer holds the tensile cord so as to penetrate the cord equalizer, and the tensile cord pulls the cord equalizer by lowering a portion of the tensile cord below the cord equalizer. It is held so that it can be pulled down from below.
Preferably, the code equalizer is composed of a single member, or when the cord equalizer is composed of a plurality of members, the plurality of members are not divided in the circumferential direction on the upper surface of the code equalizer.
According to another aspect of the present invention, a support member installed on a building, a plurality of tension cords suspended from the support member, a cord equalizer that holds the plurality of tension cords, and the tension A shielding device comprising a moving member that moves by pulling a cord and adjusts a shielding state at an opening of the building between an open state and a closed state, wherein the cord equalizer is the cord equalizer described above It is what provides the shielding apparatus.

The horizontal blind of 1st Embodiment of this invention is shown, (a) is a front view, (b) is a side view, (c) is a front view when the slat 3 is raised. FIG. 7 is a front view showing the code equalizer 8, in which (a) shows a state where two engaging members 45, 46 and the central member 11 are engaged, and (b) shows one of the engaging members 45, 46 from the central member 11. The separated state is shown. The exploded view of the code equalizer 8 is shown, (a) is the central member 11, (b) is the right engaging member 45, (c) is a plan view of the right engaging member 45, and (d) is the left engaging. Members 46 and (e) are bottom views of the left engaging member 46. (A) It is a top view which shows the effect | action from which the engagement member 45 is isolate | separated from the center member 11 when the force of the arrow X direction is applied to the engagement member 45, (b) is a code | cord equalizer which a splitting is easy to occur easily. It is a top view which shows the example of. It is a front view which shows an effect | action when the foreign material W is caught in the loop structure formed by the raising / lowering cord 5 and the code equalizer 8, (a) is the state before the engaging member 45 is isolate | separated from the central member 11, ( b) shows the state after separation. (A) Perspective view of end portion of bottom rail 2, (b) Longitudinal sectional view of end portion of bottom cap 6, (c) Longitudinal sectional view of end portion of bottom cap 6 (open state), (d) (E) is a front view which shows an effect | action when a foreign material is caught in the operation cord 10. FIG. FIG. 9 is a cross-sectional view illustrating a first modification of the first embodiment and illustrating a modification of the engagement structure of the center member 11 and the engagement members 45 and 46. The modification 2 of 1st Embodiment is shown, (a)-(c) is the perspective view seen from the upper surface side, the side surface side, and the bottom face side, respectively. The modification 2 of 1st Embodiment is shown, (a) is a disassembled perspective view which shows the state which removed the engagement member 45 from the center member 11, (b) is the center member. 11 is an exploded perspective view showing a state removed from 11. FIG. FIG. 6 is a left side view of the center member 11 according to a second modification of the first embodiment. In the horizontal blind of the modification 3 of 1st Embodiment of this invention, it is a front view which shows the effect | action when the foreign material W is caught in the loop structure formed by the raising / lowering cord 5 and the code equalizer 8, (a) is related. The state before the combined member 45 is separated from the central member 11 and (b) shows the state after being separated. It is a perspective view which shows the code equalizer 8 of 2nd Embodiment of this invention. FIG. 10 is a bottom view showing the bottom surface of the code equalizer 8 of FIG. 9. It is sectional drawing shown from the side surface side of the code equalizer 8 of FIG. It is a side view which shows the case part of the code | cord equalizer 8 of FIG. It is sectional drawing shown from the side surface which shows the case part of the code | cord equalizer 8 of FIG. It is a side view which shows the slide member 71 of the code | cord equalizer 8 of FIG. It is sectional drawing which showed the slide member 71 of the code | cord equalizer 8 of FIG. 9 from the side surface side. FIG. 10 is a perspective view showing a cord holding member 72 of the cord equalizer 8 of FIG. 9. It is sectional drawing which showed the effect | action of the code | cord equalizer 8 of FIG. 9 from the side surface side. It is sectional drawing which showed the effect | action of the code | cord equalizer 8 of FIG. 9 from the side surface side. It is sectional drawing which showed the effect | action of the code | cord equalizer 8 of FIG. 9 from the side surface side. FIG. 10 is a cross-sectional view showing the operation of the cord equalizer 8 of FIG. 9 from the side surface side. It is sectional drawing shown from the side surface side of the cord equalizer 8 of the modification 1 of 2nd Embodiment of this invention. It is sectional drawing shown from the side surface side of the cord equalizer 8 of the modification 2 of 2nd Embodiment of this invention. (A)-(b) is the perspective view which looked at the cross section of the code | cord equalizer 8 of FIG. 22 from the different angle. (A)-(b) is the perspective view which looked at the cord holding member 72 of the cord equalizer 8 of FIG. 22 from a different angle. (A)-(b) is the perspective view which looked at the code | cord equalizer 8 of FIG. 22 from a different angle. It is a disassembled perspective view of the code | cord equalizer 8 of FIG. FIG. 23 is a perspective view for explaining a method of engaging the first case 69 and the second case 70 of the cord equalizer 8 of FIG. 22. It is a cross-sectional perspective view for demonstrating the method of mounting | wearing with the operation cord 10 in the code | cord equalizer 8 of FIG. It is a perspective view of the 2nd case 70 of the code equalizer 8 of FIG. It is a front view which shows the horizontal blind of 3rd Embodiment of this invention. The code | cord equalizer 8 of 3rd Embodiment of this invention is shown, (a) is a perspective view, (b) is a perspective view in the state which penetrated the raising / lowering cord 5, (c) is a top view, (d) is the raising / lowering cord 5 It is a bottom view of the state which inserted. The state which removed the cover 53 from the cord equalizer 8 of 3rd Embodiment of this invention is shown, (a) is a perspective view, (b) And (d) is the perspective view of another angle of the same state as (a), ( c) is a perspective view of the cover 53. The cord equalizer 8 of 3rd Embodiment of this invention is shown, (a) is sectional drawing, (b) is sectional drawing which shows the effect | action when a foreign material is caught, (c), the raising / lowering cord 5 is a cord equalizer. FIG. 8D is a cross-sectional view showing the action when the lifting / lowering cord 5 is pulled in the opposite direction to each other. (A)-(b) is a front view of the horizontal blind of 3rd Embodiment of this invention, (a) shows the state by which the foreign material was caught by the raising / lowering cord, (b) is the raising / lowering cord 5 The state which moved relative to the code equalizer 8 is shown. (A) is a front view which shows another cancellation | release state when a foreign material is caught in the raising / lowering cord 5 of the upper part of the code | cord equalizer 8 of 3rd Embodiment of this invention, (b) is the horizontal blind of the same state FIG. (A) is a front view which shows another cancellation | release state when a foreign material is caught in the raising / lowering cord 5 of the upper part of the code | cord equalizer 8 of 3rd Embodiment of this invention, (b) is the horizontal blind of the same state (C) is a front view of a horizontal blind showing an action in which the lifting / lowering cord 5 moves relative to the code equalizer 8, and (d) shows a state in which foreign matter has detached from the lifting / lowering cord 5. It is a front view of the horizontal blind shown. (A) is a perspective view of the code equalizer 8 which shows the modification 1 of 3rd Embodiment of this invention, (b) is a perspective view of another angle, (c) is a plane of the state which penetrated the raising / lowering cord 5 FIG. 4D is a bottom view, FIG. 4E is a cross-sectional view of the state where the lifting / lowering cord 5 is inserted, and FIG. 4F is a cross-sectional view showing an operation when a foreign object is caught. (A)-(b) is a front view of the horizontal blind of the modification 2 of 3rd Embodiment of this invention, (a) shows the state in which the foreign material was caught by the raising / lowering cord, (b), The state where the code equalizer 8 is separated from the lifting / lowering cord 5 is shown. Modified example 4 of the first embodiment is shown, and (a) to (c) are perspective views viewed from the upper surface side, the side surface side, and the bottom surface side, respectively. Modification 4 of the first embodiment is shown, in which (a) is an exploded perspective view showing a state in which the engaging member 45 is removed from the central member 11, and (b) is an engaging member 46 from the central member 11. It is a disassembled perspective view which shows the state removed. FIG. 39A is an enlarged perspective view of a region A in FIG. 39A, and FIG. 39B shows a state in which the engaging member 45 is slightly separated from the central member 11 from the state of FIG. . It is a perspective view for demonstrating the effect | action of the rounding surfaces 45gu and 45eb of the engaging members 45 and 46. FIG. The state where the lifting / lowering cords 5R, 5C, and 5L and the operation cord 10 are attached to the code equalizer 8 is shown, (a) is a front view, and (b) is a sectional view. (A)-(c) is AA sectional drawing in FIG.43 (b), and is explanatory drawing of the state from which the engaging members 45 and 46 detach | leave from the center member 11. FIG. (A)-(c) is sectional drawing of the state which rotated Fig.44 (a) -90 degree | times, and when the load is added to the center raising / lowering cord 5C, engagement member 45,46 is from center member 11. FIG. It is description which shows the effect | action isolate | separated. 43 (a) shows a state in which additional lift cords 5R1 and 5L1 provided with a box entry preventing member 5b are attached to the code equalizer 8 from the state shown in FIG. 43 (a), and (b) shows the prevention of entry into the box. The lifting cords 5R1 and 5L1 provided with the member 5b are shown. (A) is a front view which shows the effect | action which the code equalizer 8 inclines in the raising / lowering code derivation | leading-out part 7, when the in-box entry prevention member 5b is provided in the raising / lowering cord 5R1, (b) is the code equalizer 8 A state in which a penetrating in-box entry preventing member 5b is provided to be horizontal is shown.

  Hereinafter, embodiments of the present invention will be described. Various characteristic items shown in the following embodiments can be combined with each other. The invention is established independently for each feature.

(First embodiment)
In the horizontal blind as the solar shading apparatus shown in FIG. 1, a plurality of slats 3 (shielding material, moving member) are suspended and supported via a plurality of ladder cords 4 suspended from the head box 1 (supporting member). The bottom rail 2 (moving member) is suspended and supported at the lower end of the ladder cord 4. Horizontal blinds are installed according to the opening dimensions of the building.

  In the vicinity of the ladder cord 2, a plurality of (three in this embodiment) lifting cords 5 are suspended from the head box 1, and the upper and lower cords 5 are introduced into the head box 1 at the respective hanging positions. The lower end portion is connected to the bottom rail 2.

  The lifting / lowering cord 5 introduced into the head box 1 is guided to the right side in the width direction of the head box 1 by a rotatable guide roller (not shown). The lifting / lowering cords 5 guided to the right are gathered and led out of the head box 1 from the lifting / lowering cord lead-out portion 7 via a stopper (not shown) for preventing the bottom rail 2 from falling by its own weight. The stopper can select a state in which the movement of the lifting / lowering cord 5 is prevented by the operation of the lifting / lowering cord 5 and a state in which the movement is allowed. Accordingly, the opening of the slat 3 and the bottom rail 2 in the vertical direction can be adjusted between the closed state shown in FIG. 1A and the open state shown in FIG. .

  The lifting / lowering cord 5 led out from the lifting / lowering cord lead-out portion 7 is suspended from the head box 1, and the end portions thereof are held by a cord equalizer 8. For this reason, a loop structure is formed by the plurality of lifting / lowering cords 5 and the cord equalizer 8.

  An operation cord 10 is connected to the code equalizer 8, and the operation cord 10 is connected to the bottom rail 2. More specifically, the operation cord 10 is introduced into the bottom cap 6 attached to one end portion of the bottom caps 6 provided at both left and right end portions of the bottom rail 2. Since one end of the operation cord is connected to the bottom rail 2 in this way, the end of the operation cord 10 moves up and down together with the bottom rail 2 as the bottom rail 2 moves up and down, and the lowest portion of the operation cord 10 or the lifting cord 5 The position of L is maintained at a substantially constant height during elevation.

  As shown in FIGS. 2 to 4, the appearance of the code equalizer 8 is a substantially cylindrical barrel shape, and includes a central member 11 and two engaging members 45 and 46 that engage with the central member 11. Each lifting / lowering cord 5 includes a locking portion 5a, and the central member 11 and the engaging members 45 and 46 have lifting / lowering cord insertion holes 11c, 45a and 46a and locking portion pockets 11e, 45b and 46b adjacent thereto, respectively. The lifting / lowering cord 5 is inserted into the lifting / lowering cord insertion holes 11c, 45a and 46a, and the locking portion 5a is accommodated in the locking portion pockets 11e, 45b and 46b. Engaged with the engaging members 45 and 46. With this configuration, the lifting / lowering cord 5 is held by the center member 11 and the engaging members 45 and 46 one by one. The engaging members 45 and 46 are formed with cord receiving grooves 45d and 46d on the outer surface side, and the lifting / lowering cord 5 is inserted into the lifting / lowering cord insertion holes 45a and 46a through the grooves. With such a configuration, the distance between the plurality of lifting / lowering cords 5 can be shortened and the lifting / lowering cords 5 can be prevented from protruding from the outer surface in the radial direction of the code equalizer 8. Further, the operation cord 10 includes a locking portion 10a, the center member 11 includes an operation code insertion hole 11d and a locking portion pocket 11f adjacent thereto, and the operation cord 10 is inserted into the operation code insertion hole 11d. The operation cord 10 is engaged with the central member 11 by accommodating the engaging portion 10a in the engaging portion pocket 11f.

  The central member 11 includes a central shaft 11g, and an upper locking portion 11a and a lower locking portion 11b that are provided along the central shaft 11g at intervals. The engaging members 45 and 46 have the same shape, and include bases 45f and 46f and a pair of arms 45c and 46c extending from the bases 45f and 46f. The pair of arms 45c and 46c are configured to engage the center shaft 11g with the center shaft 11g interposed therebetween. The height of the pair of arms 45c and 46c is about half of the central axis 11g. The engaging members 45 and 46 are engaged with the central shaft 11g in a state where the engaging members 45 and 46 are turned upside down. The distal end surface 45e of the arm 45c of the engagement member 45 abuts on the distal end surface 46g of the base 46f of the engagement member 46, and the distal end surface 46e of the arm 46c of the engagement member 46 is in contact with the distal end of the base 45f of the engagement member 45. It abuts on the surface 45g. With such a configuration, in a state where the engaging members 45 and 46 are engaged with the central member 11, the engaging members 45 and 46 are combined with almost no gap, and rattling of the engaging members 45 and 46 is suppressed.

  According to the configuration of the present embodiment, since the engaging members 45 and 46 are sandwiched between the upper engaging portion 11a and the lower engaging portion 11b, the engaging members 45 and 46 are along the central axis 11g with respect to the engaging members 45 and 46. Even if a force in the direction (the direction of arrow Y in FIG. 2A) is applied, the engagement between the engagement members 45 and 46 and the central member 11 is not released. The user usually pulls down the lifting / lowering cord 5 by holding the code equalizer 8 and pulling down the code equalizer 8 or by holding the operation cord 10 and pulling down the operation cord 10. Regardless of which method is used, a downward load is applied to the cord equalizer 8 in a state where the plurality of lifting cords 5 are substantially parallel to each other, and the engagement members 45, 46 and the central member 11 The force that separates the engagement between them is not applied, and the code equalizer 8 is not disassembled during the user's operation. Further, when the cord equalizer 8 is gripped and pulled down, a force is easily applied to the upper surface of the cord equalizer 8 (the upper surface of the upper locking portion 11a), and the cord equalizer 8 is shown in FIG. As shown, if the member is divided into a plurality of members A, B, and C in the circumferential direction, for example, when a force is applied only to the member A, the member A is unexpectedly separated. On the other hand, according to the present embodiment, since a plurality of members constituting the code equalizer 8 are not divided in the circumferential direction on the upper surface of the code equalizer 8, such an unexpected division does not occur. Thus, the code equalizer 8 of the present embodiment is not divided unexpectedly during operation, and has excellent operability.

  On the other hand, for example, as shown in FIG. 5, when a foreign object W is sandwiched between the lifting / lowering cord 5 held by the engaging member 45 and the lifting / lowering cord 5 held by the central member 11, these lifting / lowering cords When a load C is applied to the lifting / lowering cord 5 in the direction in which the 5 is expanded, a force in the direction perpendicular to the central axis 11g (in the direction of arrow X in FIG. 2A) is applied to the engaging member 45. With this force, as shown in FIG. 4A, the distance between the pair of arms 45c is widened, and the engagement between the engagement member 45 and the center member 11 is released. Then, as shown in FIG. 5 (b), the loop structure formed by the lifting / lowering cord 5 and the cord equalizer 8 is released, and the foreign matter W falls off to ensure safety.

  As shown in FIG. 6A, a bottom cap 6 is attached to the end of the bottom rail 2. The bottom rail 2 is hollow, and one end surface of the bottom cap 6 communicates with the internal space of the bottom rail 2. A plurality of substantially circular insertion holes 21 are formed on the front side vertical surface of the bottom cap 6, and are openings that communicate with the inside of the bottom rail 6. A communication slit 38 is formed so as to connect between the insertion holes 21 and the edge of the bottom cap 6, and the operation cord 10 can be inserted from the edge of the bottom cap 6 to the insertion hole 21 via the communication slit 38. It has become. The bottom cap 6 is provided with a plurality of insertion holes 21 so that a plurality of cords can be held. However, when the single operation cord 10 is held, the number of the insertion holes 21 may be one.

  As shown in FIG. 6B, a release bar 40 is provided in the front and rear direction inside the bottom cap 6. In addition, a fixed clamping portion 23 is provided integrally with the bottom cap 6 in the vicinity of the insertion hole 21. The release bar 40 is provided with an elongated thin plate-like movable sandwiching portion 22 so as to face the fixed sandwiching portion 23. A concavo-convex surface is formed at the distal end portions of the fixed nip portion 23 and the movable nip portion 22, and a plurality of operation codes 10 can be held together by the concavo-convex surface. Therefore, in the state shown in FIG. 6B, the end of the operation cord 10 can be held by the fixed clamping portion 23 and the movable clamping portion 22 so as not to move with a predetermined holding force. The end portions of the plurality of operation cords 10 are cut and frayed, the knot balls are not provided with a stopper such as a knot, and each operation cord 10 is endless.

  A support portion 24 is formed integrally with the bottom cap 6 at the center in the longitudinal direction of the release bar 40. A release operation piece 25 is provided behind the release bar 40. A rotation hole 39 through which the release operation piece 25 passes inside and outside is formed on the rear surface of the bottom cap 6. By pushing the release operation piece 25 in the direction of arrow B in FIG. 6C, the interval between the fixed clamping portion 23 and the movable clamping portion 22 is expanded to a sufficient interval where the operation cord 10 can be inserted. It is possible.

  As shown in FIG. 6 (d), the foreign substance W is hooked on the operation cord 10 located below the code equalizer 8 and a load C is applied, and the component force exceeding the predetermined holding force of the operation cord 10 by the bottom cap 6 is operated. When acting on the cord 10, the end portion of the operation cord 10 is detached from the bottom cap 6 as shown in FIG. 6E, and safety is maintained. To return to the normal use state, the end of the operation cord 10 is inserted into the insertion hole 21, and the release operation piece 25 is operated as shown in FIG. It can be restored by inserting the operation code 10 between the unit 22 and the unit 22.

This embodiment can also be implemented in the following aspects.
In the above embodiment, the engagement members 45 and 46 have the same shape in order to reduce the number of members, but they do not necessarily have the same shape.
-Another structure may be sufficient as the engagement structure of the engagement members 45 and 46 and the center member 11, for example, it engages centering on the center axis | shaft 11g like the modification 1 shown to FIGS. The arms 45c, 46c may be engaged with the central axis 11g so that the arms 45c, 46c of the members 45, 46 overlap. Further, at least one of the upper and lower surfaces of the engaging members 45 and 46 may be elastically engaged with at least one of the upper locking portion 11a and the lower locking portion 11b. For example, engagement convex portions are provided on the upper and lower surfaces of the engagement members 45 and 46, respectively, and engagement concave portions are provided on the lower surface of the upper locking portion 11a and the upper surface of the lower locking portion 11b, respectively. The portion and the engaging recess can be elastically engaged.
The central member 11 may be divided into a plurality of parts.
The center member 11 is not essential, and the engaging members may be directly engaged with each other.
-The number of engaging members may be three or more. In this case, the three or more engaging members can be engaged with the central shaft 11 so as to be arranged along the central shaft 11g, for example.
-It is not essential that the plurality of members constituting the code equalizer 8 are integrated by elastic engagement, and may be integrated by, for example, an attractive force by magnetic force. Even in such a case, the load is applied to the lifting / lowering cord 5 in the direction in which the plurality of lifting / lowering cords 5 are expanded, so that the plurality of members are separated, so that safety can be ensured and the state can be easily restored.

(Modification 2 of the first embodiment)
Modification 2 of the first embodiment of the present invention will be described with reference to FIGS. 7-2 to 7-4.
In the above-described embodiment, the cord receiving grooves 45d and 46d are provided on the outer surfaces of the engaging members 45 and 46. However, in the present modification, protruding bases 45h and 46h are provided on the inner surface side of the engaging members 45 and 46 to Elevating cord insertion holes 45i and 46i are provided in the bases 45h and 46h. The locking portion 5a of the lifting / lowering cord 5 is locked at the bottom surface of the protrusions 45h and 46h. The central member 11 is provided with protruding base pockets 11m for avoiding interference with the protruding bases 45h and 46h, and cord receiving grooves 11k and 11l for avoiding interference with the lifting / lowering cord 5. According to this modification, in addition to avoiding the formation of grooves on the outer surfaces of the engaging members 45 and 46, the distance between the plurality of lifting cords 5 can be reduced, so that the plurality of lifting cords There is an advantage that the foreign matter W becomes difficult to enter between 5.

(Modification 3 of the first embodiment)
The third modification of the first embodiment of the present invention has a configuration similar to that of the first embodiment, and has two lift cords 5, and the lift cord 5 is connected only to the engaging members 45 and 46. The main difference is that the lifting / lowering cord 5 is not connected to the central member 11.
Even in the case of this modification, as shown in FIGS. 8A to 8B, when the foreign matter W is caught in the loop structure formed by the lifting / lowering cord 5 and the cord equalizer 8, the lifting / lowering cord 5 is caused by the load. As the engagement members 45 and 46 are separated from the center member 11 by expanding, the safety is ensured. 8B shows a state in which both the engaging members 45 and 46 are separated from the central member 11, but only the engaging member 45 or only the engaging member 46 depending on how the load C is applied. May deviate from the central member 11.

(Modification 4 of the first embodiment)
The modification 4 of 1st Embodiment of this invention is demonstrated using FIGS. 39-47. This modified example has a configuration similar to that of the modified example 2 of the first embodiment, and will be described below with a focus on differences. In the following description, the lifting / lowering cord is generically referred to as “elevating / lowering cord 5”, and the individual lifting / lowering cords are referred to as “elevating / lowering cord 5R”, “elevating / lowering cord 5R1” and the like.
In the second modification, the upper locking portion 11a of the center member 11 has a substantially circular shape, and one lifting / lowering cord 5 can be inserted into the cord receiving grooves 11k and 11l. The portion 11a has an elongated shape, and crescent-shaped gaps 11p and 11q are provided between the upper locking portion 11a and the engaging members 45 and 46, respectively. A maximum of three lifting / lowering cords 5 are inserted through the gaps 11p and 11q, respectively. Two lift cords 5 out of a maximum of six lift cords inserted through the gaps 11p and 11q are inserted into the lift cord insertion holes 45i and 46i provided in the projecting bases 45h and 46h, as in the second modification. It is inserted and locked. The remaining four lifting cords 5 are housed and locked in slits 11t and 11v provided on the protruding bases 11s and 11u protruding from the central wall 11r of the central member 11 toward the engaging members 45 and 46. The Further, the lifting / lowering cord insertion hole 11c of the central member 11 extends through the central wall 11r to the pocket 11o, and the lifting / lowering cord 5 inserted through the lifting / lowering cord insertion hole 11c is locked on the upper surface of the pocket 11o. The In addition, as shown in FIG.43 (b), each raising / lowering code | cord | chord 5 is provided with the latching | locking parts 5a, such as a ball stop, in each front-end | tip, and is latched.

In a state where the engaging member 45 is engaged with the central member 11, as shown in FIG. 41A, the tip of the protruding base 45h of the engaging member 45 overlaps with the protruding base 11s of the central member 11 in plan view. The lifting / lowering cord 5 is held in a space P surrounded by the side wall of the slit 11t and the protruding base 45h. Since the space P is surrounded by the side wall of the slit 11t and the protruding base 45h, the elevating cord 5 in the space P is not easily detached at normal times. On the other hand, when a foreign object is caught on the lifting / lowering cord 5 in the space P and a load in the direction of the arrow X in FIG. 41 is applied, the lifting / lowering cord 5 pushes the protrusion 45h, thereby engaging as shown in FIG. 41 (b). The member 45 is separated from the central member 11, and a gap Q is formed between the protruding base 45 h and the protruding base 11 s, and the lifting / lowering cord 5 in the space P is detached through the gap Q and is removed from the cord equalizer 8. Is secured. The lifting / lowering cord 5 in the space P can be detached from the cord equalizer 8 if the engaging member 45 is separated from the central member 11 to such an extent that a gap Q through which the lifting / lowering cord 5 can pass is formed. Therefore, when the lifting / lowering cord 5 in the space P is detached from the code equalizer 8, the engaging member 45 may be separated from the central member 11, but may not be separated from the central member 11. For example, the engaging member 45 may return to the original state by its elastic force after the engaging member 45 is detached from the central member 11 to form the gap Q and the lifting cord 5 is detached.
In addition, the taper surface 45j is provided in the both ends of the width direction of the protrusion base 45h, and since the taper surface 45j has entered into the slit 11t, it is large enough to detach the lifting / lowering cord 5 when a load is applied. The gap Q is easily formed. The engaging member 46 projecting base 46h and the projecting base 11u of the central member 11 have the same configuration, and tapered surfaces 46j are provided at both ends in the width direction of the projecting base 46h. The slit 11t may be provided in the engaging member 45, and the tapered surface 45j may be provided in the central member 11.

  Further, rounded surfaces are formed at the corners of the opposing surfaces of the engaging members 45 and 46. Specifically, the engagement member 45 is formed with rounded surfaces 45gu, 45gb, 45eu, 45eb in order from the upper side, and the engagement member 46 is formed with rounded surfaces 46eu, 46eb, 46gu, 46gb in order from the upper side. ing. The rounded surfaces 45gb, 45eu, 45eb, 46eb, 46gu, and 46gb facilitate the relative rotation between the engaging members 45 and 46 and allow the engaging members 45 and 46 to be smoothly detached from the center member 11. ing. On the other hand, as shown in FIG. 42, the rounded surfaces 45 gu and 46 eu are formed when the code equalizer 8 is inclined by applying a load in the arrow X direction to the lifting / lowering cord 5R1 inserted through the gap 11p and locked to the slit 11t. The lifting / lowering cord 5R locked to the engaging member 45 is provided to guide the separating surface between the engaging members 45 and 46 by guiding the lifting cord 5R to the boundary surface B of the engaging members 45 and 46. That is, the rounded surfaces 45 gu and 46 eu function as a lifting / lowering cord guide surface that guides the lifting / lowering cord 5R to the boundary surface B, and the shape thereof may be, for example, a flat tapered surface. In some cases, a load is applied to the lifting / lowering cord 5C formed on the central member 11 and the lifting / lowering cord 5R is guided to the boundary surface B. In some cases, a load is applied to the lifting / lowering cord 5R and the lifting / lowering cord 5R1 is guided to the boundary surface B. Here, the lifting / lowering cord 5 held on the engaging member 45 side has been described, but the same applies to the lifting / lowering cord 5 held on the engaging member 46 side.

  FIG. 43 shows a state in which one elevating cord 5 is attached to each of the central member 11 and the engaging members 45 and 46, and the operation cord 10 is attached to the central member 11 (these elevating cords 5 are hereinafter referred to as elevating cords). Also referred to as 5C, 5R, 5L). When a foreign object is caught in the space R between the lifting / lowering cords 5C and 5R and a load is applied to the lifting / lowering cord 5R, a force in the direction of the arrow X1 in FIG. As shown in b), the engaging member 45 snap-fixed to the central member 11 is released. On the other hand, when a load is applied to the lifting / lowering cord 5L while a foreign object is caught in the space L between the lifting / lowering cords 5C and 5L, a force in the direction of the arrow X2 in FIG. As shown in 44 (c), the engaging member 46 snap-fixed to the center member 11 is released.

  Further, when a foreign object is caught in the space between the lifting / lowering cord 5C and the other lifting / lowering cords 5R and 5L, the vertical direction in FIG. 43 (a) with respect to the lifting / lowering cord 5C (the direction of the arrow X3 in FIG. 45 (a)) ) May be applied. Since this load is perpendicular to the direction in which the engaging members 45 and 46 are separated from the central member 11, the engaging members 45 and 46 are relatively difficult to separate from the central member 11 when a load is applied in this direction. . However, since the surface with which the central shaft 11g of the central member 11 abuts against the engaging members 45 and 46 is arcuate, the arrow added to the central member 11 as shown in FIGS. The force in the X3 direction is converted into a force in the arrow XR direction in the region C1 and transmitted to the engaging member 45 to disengage the engaging member 45, and is converted into a force in the arrow XL direction in the region C2 and applied to the engaging member 46. The engagement member 45 is disengaged by being transmitted.

  FIG. 46A shows a state in which the additional lifting / lowering cord 5R1 is locked to the slit 11t and the additional lifting / lowering cord 5L1 is locked to the slit 11v. Since the elevating cords 5C, 5R, and 5L are locked to the center member 11 or the engagement members 45 and 46 even when the engagement members 45 and 46 are detached from the center member 11, the center member 11 or the engagement member 45 is engaged. 46 are brought into contact with the lifting / lowering cord lead-out portion 7 shown in FIGS. 1 and 47, so that the tips of the lifting / lowering cords 5C, 5R and 5L are not drawn into the head box 1. On the other hand, the lifting / lowering cords 5R1 and 5L1 are not fixed to any member when the engaging members 45 and 46 are detached from the central member 11, so that the tips of the lifting / lowering cords 5R1 and 5L1 are pulled into the head box 1. In this case, it takes time and effort to lock the lifting / lowering cords 5R1 and 5L1 to the cord equalizer 8 again. Therefore, in this modification, the in-box entry preventing member 5b is attached to the lifting / lowering cords 5L1 and 5R1 that are locked to the slits 11t and 11v. In one example, the box entry preventing member 5b is a spherical body that has a through-hole 5b1 and can be locked by the lifting / lowering cord lead-out portion 7 as shown in 46 (b), and the lifting / lowering cords 5L1 and 5R1 are through-holes. 5b1 is inserted. The in-box preventing member 5b is relatively movable along the lifting / lowering cords 5L1 and 5R1, and when the lifting / lowering cords 5L1 and 5R1 are attached to the code equalizer 8, as shown in FIG. 46 (a). When the lifting / lowering cords 5L1 and 5R1 are disengaged from the code equalizer 8, they are locked by the locking portion 5a as shown in FIG.

  By the way, there is a type of solar shading device in which the lower limit position of the bottom rail 2 is determined by locking the code equalizer 8 to the lifting / lowering code lead-out portion 7 like a pleated screen. When the number of the raising / lowering cords 5 of such a solar radiation shielding apparatus is four, the raising / lowering cords 5C, 5R, 5L, and 5R1 are provided, and the raising / lowering cord 5R1 is provided with the in-box entry preventing member 5b. In this state, when the bottom rail 2 is lowered to the lower limit position, as shown in FIG. 47 (a), the in-box entry preventing member 5b comes into contact with the elevating cord lead-out portion 7 on the right side of the cord equalizer 8, and the cord equalizer 8 On the left side, the upper surface of the code equalizer 8 abuts against the lifting / lowering code derivation unit 7, so that the code equalizer 8 is inclined and the aesthetic feeling is impaired. Moreover, the bottom rail 2 will also incline by this inclination. In FIG. 47A, the lifting / lowering cord 5R is not shown.

  In order to prevent such a problem, the lifting / lowering cord 5L provided on the opposite side of the lifting / lowering cord 5R1 provided with the in-box preventing member 5b and / or the lifting / lowering cord 5C on the opposite side of the lifting / lowering cord 5C An entry preventing member 5b may be provided. As a result, as shown in FIG. 47B, the inclination of the code equalizer 8 can be suppressed even when the bottom rail 2 is lowered to the lower limit position.

This modification can be implemented in the following manner.
-Although the code equalizer of this modification is comprised so that a maximum of seven raising / lowering cords can be hold | maintained, you may comprise it so that eight or more raising / lowering cords can be hold | maintained. As a method of increasing the number of liftable cords that can be held, there are a method of increasing the number of slits for accommodating the liftable cords or increasing the number of liftable cords accommodated in one slit.

(Second Embodiment)
The second embodiment of the present invention has a configuration similar to that of the third modification of the first embodiment, and the main difference is that the configuration of the code equalizer 8 is different. Hereinafter, the code equalizer 8 of the present embodiment will be described in detail.

  As shown in FIGS. 9 to 10, the outer appearance of the code equalizer 8 has a substantially cylindrical shape, and includes a first case 69, a second case 70, a slide member 71, and a cord holding member 72. The first case 69 and the second case 70 are structured to be fixed so that the cases are integrated with each other by fitting by snap or the like, or screwing by screwing or the like. The upper part of the first case 69 is circularly cut out, and the slide member 71 and the cord holding member 72 are arranged so as to protrude upward from the drawn-out part. The cord holding member 72 is provided with a cord guide portion 73 (six locations in the drawing), and is formed so that the lifting cord 5 is inserted along the cord guide portion 73. A slit-like operation code insertion hole 74 is provided on the bottom surface of the second case 70, and the operation code 10 is inserted through the operation code insertion hole 74.

  Next, each configuration of the code equalizer will be described with reference to FIGS.

  As shown in FIGS. 11 to 13, the first case 69 has a cylindrical shape that is open in the vertical direction, and has a first space 75 inside thereof, and includes a slide member 71 and a spring described later. 77 is housed. Further, a flange locking portion 83 protruding in the opening inner diameter direction is provided on the upper side of the side surface of the first case 69. Furthermore, the lower part of the side surface is provided with a portion that engages with the second case 70 by snap or the like, or is screwed by screwing.

  The second case 70 has a substantially cylindrical shape, the upper part thereof is opened in a circular shape, and the lower part has a bottom surface. The second case 70 has a second space portion 76 that is slightly narrower than the first space portion 75, and a spring locking portion on which a spring 77, which will be described later, is placed on an upper surface that is in contact with the first space portion. 79. The upper portion of the second space 76 is opened by an opening, and the bottom surface corresponding to the lower side is electrically connected to the operation cord insertion hole 74 having a rectangular shape so that the operation cord 10 can be inserted into the operation code insertion hole 74. Yes. The operation cord 10 has an end portion of the operation cord 10 projecting into the second space 76 from the bottom bottom side, and a knot, caulking, or the like is provided at the end portion so that the second case 70 and the operation cord 10 are It is configured to be fixed. Further, an engagement shaft 84 is disposed on the upper opening side of the second space portion 76 of the second case 70 so as to cross the diameter of the opening, and the cross section thereof has a substantially rectangular shape.

  As shown in FIGS. 11 and 14 to 15, the slide member 71 has a substantially cylindrical shape and protrudes from the first space portion 75 of the first case 69 toward the upper opening side of the first case 69. A slide member 71 is disposed. The slide member 71 has a circular opening on both the upper side and the lower side. The slide member 71 has a third space 80 inside thereof, and accommodates a cord holding member 72 described later. A flange 81 protruding in the outer direction of the outer surface is formed in an annular shape on the side surface circumference at a substantially center in the vertical direction of the outer surface of the slide member 71, and the protruding surface of the flange 81 is formed on the first case 69. It is in contact with the inner surface on the first space 75 side so as to be slidable in the vertical direction. The upper surface side of the flange 81 is in contact with the flange locking portion 83 of the first case 69, thereby preventing the flange 81 from coming off from the first case opening. Furthermore, a slide shaft 78 is formed in the opening portion on the lower side of the slide member 71 so as to cross the diameter of the opening, and the cross section has a cylindrical shape. Arranged in a shape. Further, the upper end portion of the upper side surface of the slide member 71 has a cord weight detecting portion 82 that is rounded so as to go from the surface of the second space 76 to the outside of the opening. In addition, the outer diameter of the side surface of the slide member 71 is formed such that the diameter of the side surface located on the lower side is smaller than the diameter of the side surface located on the upper side with the flange 81 as a boundary. With this configuration, it is possible to dispose the side surface located on the lower side of the slide member 71 into the inner diameter portion of the spring 77 described later. The length in the vertical direction in which the slide member 71 protrudes from the first case 69 and the length in the vertical direction of the space from the bottom surface of the slide member 71 to the spring locking portion 79 in the first space 75 are as follows. It is comprised so that it may become substantially the same length.

  As shown in FIG. 11, a spring 77 serving as a biasing member is disposed in the first space 75. The inner surface of the spring 77 has a side surface located on the lower side of the slide member 71 so as to enter the center of the spring 77 in the vertical direction, and a cord holding member 72 described later enters the inner side of the spring 77 in the vertical direction. Has been placed. The lower portion of the spring 77 is locked so as to be placed on the spring locking portion 79 of the second case 70, and the upper portion is disposed so as to be locked to the lower surface of the flange 81 of the slide member 71. By disposing the spring 77 in this way, the slide member 71 is pushed upward by the urging force of the spring 77 in a direction away from the case 69 and the case 70 and is held at a position where the flange 81 and the flange locking portion 83 abut. It is the arrangement state which is done. The urging force of the spring 77 may be such a force that the flange 81 comes into contact with the flange locking portion 83 of the first case 69.

  The cord holding member 72 shown in FIGS. 11 and 16 has a columnar portion 85 having a cylindrical shape at the upper portion thereof and a pair of elastic arms 86 so as to protrude from the bottom surface of the columnar portion 85. The diameter of the cylindrical portion 85 is set so as to be in contact with the inner surface on the third space portion 80 side of the slide member 71 so as to be slidable in the vertical direction. In addition, the upper surface of the cylindrical portion 85 is disposed so as to be flush with the upper portion of the side surface of the slide member 71 (the code load detecting portion 82), and the lower surface thereof is positioned within the third space portion 80. In the drawing, a cord guide portion 73 having six vertical grooves is provided, and the end of the lifting / lowering cord 5 is inserted from the upper portion side of the cord guide portion 73 and lifted from the lower portion of the cord guide portion 73. The cord 5 is projected to form knots, caulking, and the like. Since the slide member 71 is arranged on the outer edge side where the code guide portion 73 is not restricted, the periphery of the lift cord 5 is restricted by the code guide portion 73 and the slide member 71, and as a result, the cord holding member 72 and the lift cord 5. Is configured to be fixed. In the present embodiment, since six code guide portions 73 are formed, a maximum of six elevating cords can be inserted into each code guide portion 73.

  Thus, as shown in FIG. 17, the cord holding member 72 forms a loop structure by holding a plurality of lifting cords 5 in a state where the cord holding member 72 is engaged with the second case 70, As shown in FIG. 20, when the engagement between the cord holding member 72 and the second case 70 is released, the lifting / lowering cord 5 is separated from the cord holding member 72 and the loop structure is released. . In the state where the engagement between the cord holding member 72 and the second case 70 is released, all the lifting / lowering cords 5 may be separated from the cord holding member 72. It is preferable that one of the plurality of lifting / lowering cords 5 is held by the cord holding member 72 even when not engaged. Therefore, in the present embodiment, as shown in FIG. 16, only one of the plurality of code guide portions 73 is provided with a cord fixing portion 89 that holds the lifting cord 5 even when not engaged.

  The pair of elastic arms 86 of the cord holding member 72 has an elastic force that opens and closes in the left-right direction, and is configured in the vertical direction from the inside of the first space 75 to the third space 80. Each of the pair of elastic arms 86 has a locking portion 87 having a taper so that the distance between the pair of elastic arms 86 increases toward the tip. The cord holding member 72 and the second case 70 are engaged with each other by engaging the engaging shaft 84 of the second case 70 from the left and right by the engaging portion 87. Further, the elastic arm 86 includes a convex portion 88 that is disposed at the inner side surface of the elastic arm 86 slightly below the vertical center of the elastic arm 86 and has a taper that protrudes in the central direction. A slide shaft 78 is disposed in the space between the convex portion 88 and the base of the elastic arm 86 between the pair of elastic arms 86.

  Next, the operation of the code equalizer will be described with reference to FIGS. In the present embodiment, the two lifting cords 5 are exemplified, but three or more lifting cords may be used. In addition, the two lifting cords 5 are both attached to a cord guide portion 73 that does not have the cord fixing portion 89. In each figure, the operation code 10 is not shown.

  FIG. 17 is a diagram illustrating a normal state in which the code equalizer 8 is used during operation. In this state, two lifting / lowering cords 5 are suspended from the head box 1 (not shown), and a code equalizer 8 is connected to the end of each lifting / lowering cord 5. Each lifting / lowering cord 5 is provided with a locking portion 5 a wider than the code guide portion 73, the lifting cord 5 is accommodated in the code guide portion 73, and the locking portion 5 a is engaged with the end surface of the code guide portion 73. By stopping, the lifting / lowering cord 5 is prevented from coming off from the cord guide portion 73. In this state, both the lifting / lowering cords 5 hang down substantially in parallel, and there is substantially no gap between the lifting / lowering cords 5.

  Next, FIG. 18 is a diagram illustrating a state of the code equalizer 8 when an abnormality occurs in which a foreign object, a human body, or the like is caught between the lifting / lowering cords 5 for some reason. When this abnormality occurs, a foreign object or the like (not shown) is present above the code equalizer 8 between the lifting / lowering cords 5. In such a state, due to the presence of foreign matter or the like between the lifting / lowering cords 5, the lifting / lowering cord 5 is expanded in the left-right direction as shown in the figure, and a force in the direction of arrow A in the figure is applied. Is transmitted to the cord equalizer 8 connected to the end of the lifting / lowering cord 5.

  At this time, the lifting / lowering cord 5 comes into contact with the code load detecting portion 82 of the slide member 71, and a force for pulling the cord holding member 72 in the direction of the arrow A in the drawing works using the contact portion as a fulcrum. Since it is firmly connected and held by the cord holding member 72, it does not come off from the code equalizer 8, and the cord holding member 72 also comes off from the code equalizer 8 by the engagement of the engaging portion 87 and the engaging shaft 84. There is no.

  In such a connected and engaged state, the cord load detecting portion 82 against which the lifting / lowering cord 5 abuts serves as a fulcrum, and as shown in FIGS. 18 to 19, the slide is pushed upward by the biasing force of the spring 77. The member 71 is pushed in the direction in the first space 75 which is the direction of the arrow B in the figure against the urging force.

  When the lifting / lowering cord 5 pushes the slide member 71 in the first space 75, the slide shaft 78 provided in the slide member 71 simultaneously moves in the same direction. By this movement, the slide shaft 78 comes into contact with a tapered convex portion 88 provided on the elastic arm 86 of the cord holding member 72. By this contact, the elastic arm 86 spreads so as to be pushed in the left-right direction (arrow C direction). With the expansion of the elastic arm 86 in the left-right direction, the engaging portion 87 at the tip of the elastic arm 86 also expands in the left-right direction, and the engagement with the engagement shaft 84 provided in the second case 70 is released.

  The cord holding member 72 and the second case 70 are separated when the locking portion 87 is disengaged from the engaging shaft 84. The separated cord holding member 72 is acted upon by the lifting / lowering cord 5 in the upward direction of the first case 69 (in the direction of arrow D in FIG. 19), so that the cord holding member 72 is shown in FIGS. 72 is detached from the first case 69 and the second case 70. Furthermore, since only the cord holding member 72 is removed, there is no slide member 71 that restricts the lifting / lowering cord 5 from coming out on the outer edge side of the code guide portion 73, so that the lifting / lowering cord 5 is detached from the cord holding member 72.

  The user usually pulls down the lifting / lowering cord 5 by holding the code equalizer 8 and pulling down the code equalizer 8 or by holding the operation cord 10 and pulling down the operation cord 10. Regardless of which method is used, a downward load is applied to the cord equalizer 8 in a state where the plurality of lifting cords 5 are substantially parallel to each other, and between the cord holding member 72 and the second case 70. The force for releasing the engagement is not applied, and the cord holding member 72 does not come off during the user's operation. Further, when the cord equalizer 8 is gripped and pulled down, a force is easily applied to the upper surface of the cord equalizer 8, and the cord equalizer 8 on this surface has a plurality of members A and B in the circumferential direction as shown in FIG. , C, for example, when a force is applied only to the member A, the member A is unexpectedly separated. On the other hand, according to the present embodiment, the plurality of members constituting the code equalizer 8 are concentrically divided on the upper surface of the code equalizer 8 and are not divided in the circumferential direction. Absent. When the user places a finger on the upper surface of the code equalizer 8 and pushes both the cord holding member 72 and the slide member 71 in the direction of arrow B in FIG. 18, the slide shaft 78 and the convex portion 88 in FIG. As a result, the engagement between the cord holding member 72 and the second case 70 is not released. When the user hooks his / her finger on the slide member 71 around the cord holding member 72 and pushes only the slide member 71 in the direction of arrow B in FIG. 18, the cord holding member 72 and the second case 70 The engagement may be released, but in such an unnatural operation, the slide member is against the urging force of the spring 77 to such an extent that the engagement between the cord holding member 72 and the second case 70 is released. Since it is not easy to push in 71, the cord holding member 72 is virtually not separated from the second case 70 during normal operation. Thus, the code equalizer 8 of the present embodiment is not divided unexpectedly during operation, and has excellent operability.

This embodiment can also be implemented in the following embodiments.
-Although the code | cord | chord weight detection part is made into the structure which applies a round, you may comprise by the member which can guide, such as a roller instead of a round.
-Six or more code guide portions may be formed on the cord holding member so that six or more lifting cords can be connected to the cord equalizer.

(Modification 1 of 2nd Embodiment)
Modification 1 of the second embodiment of the present invention has a configuration similar to that of the second embodiment, and the main difference is that the configuration of the code equalizer 8 is different. Hereinafter, the code equalizer 8 of this modification will be described in detail.
In this modification, the slide shaft 78 is disposed between the pair of elastic arms 86 and is engaged with the pair of elastic arms 86 by widening the interval between the pair of elastic arms 86 by sliding movement of the slide shaft 78. Although the engagement with the shaft 84 is released, in this modification, the slide shaft 78 is disposed adjacent to the outside of the pair of elastic arms 86 as shown in FIG. In the normal state shown in FIG. 21, since the slide shaft 78 is disposed adjacent to the outside of the pair of elastic arms 86, the spread of the pair of elastic arms 86 is suppressed. For this reason, the holding force of engagement between the pair of elastic arms 86 and the engagement shaft 84 is large. On the other hand, when a load is applied to the lifting / lowering cord 5 in the direction in which the plurality of lifting / lowering cords 5 are expanded and the slide member 71 slides in the direction of the second case 70, the slide shaft 78 slides in the direction of arrow X in FIG. The movement of the pair of elastic arms 86 is released. As a result, the holding force of the engagement between the pair of elastic arms 86 and the engaging shaft 84 is reduced, and the cord holding member 72 is separated from the second case 70 when the load applied to the elevating cord 5 exceeds the threshold value. .

(Modification 2 of the second embodiment)
The second modification of the second embodiment of the present invention has a configuration similar to that of the first modification of the second embodiment, and the cord holding member 72 is separated from the second case 70 by substantially the same principle. However, the engagement structure between the cord holding member 72 and the second case 70 and the structure of the slide member 71 are different. Hereinafter, the description will be focused on the differences with reference to FIGS. 22 to 30. In each perspective view, the illustration of the spring 77 is omitted as appropriate.

  As shown in FIGS. 22 to 23, the second case 70 includes an inclined engagement portion that includes a tapered surface 91 a that protrudes from the inner surface of the second case 70 and is inclined upward toward the radial center of the second case 70. 91 is provided. The cord holding member 72 includes an elastic arm 86 having a locking portion 87 at the tip, and the cord holding member 72 engages with the second case 70 when the upper surface of the locking portion 87 contacts the tapered surface 91a. ing. An inclined slide portion 92 of the slide member 71 is provided on the opposite side of the tapered surface 91a with the elastic arm 86 interposed therebetween. The inclined slide portion 92 is provided with a tapered surface 92 a that is inclined upward toward the elastic arm 86. The inclined slide portion 92 has a function similar to that of the slide shaft 78 of the first modification of the second embodiment, and as shown in FIG. In the state adjacent to the surface opposite to the portion 87), since the elastic deformation of the elastic arm 86 is suppressed, even if a strong upward force is applied to the cord holding member 72, the cord is held. The engagement between the member 72 and the second case 70 is not released. On the other hand, when a load is applied to the lifting / lowering cord 5 in the direction in which the plurality of lifting / lowering cords 5 are expanded and the slide member 71 slides in the direction of the second case 70, the inclined slide portion 92 moves in the direction of arrow X in FIG. When reaching the position indicated by the dotted line 92a, the suppression of the elastic deformation of the elastic arm 86 is released. As a result, the holding force of the engagement between the elastic arm 86 and the tapered surface 91a is reduced, and the cord holding member 72 is separated from the second case 70 when the load applied to the elevating cord 5 exceeds the threshold value.

  The mechanism by which the cord holding member 72 holds the lifting / lowering cord 5 is similar to that of the second embodiment, but in this embodiment, as shown in FIG. 24, one cord fixing portion of a plurality of cord guide portions 73. 89 is provided, and the others are provided with a cord temporary fixing portion 73a. In the present embodiment, the cord temporary fixing portion 73 a is configured by narrowing the width of the cord guide portion 73 so as to be slightly narrower than the diameter of the elevating cord 5. The temporary cord fixing portion 73a is for improving the assembling property by temporarily fixing the lifting / lowering cord 5 to the cord guide portion 73 when the cord equalizer 8 is assembled, and holds the lifting / lowering cord 5 weakly. For this reason, when a load is applied to the lifting / lowering cord 5 in the direction in which the plurality of lifting / lowering cords 5 are expanded and the cord holding member 72 is separated from the second case 70, the lifting / lowering cord 5 is lifted / lowered by the load applied to the lifting / lowering cord 5 at that time. The cord 5 is detached from the cord guide portion 73 against the holding force by the cord temporary fixing portion 73a.

  As shown in FIG. 24, the cord holding member 72 is provided with a partition wall 93 substantially perpendicular to the sliding direction of the slide member 71 between the cord holding portion 72 a where the code guide portion 73 is provided and the elastic arm 86. The rib 94 is erected on the elastic arm 86 side. The outer peripheral shape of the partition wall 93 is substantially the same as the inner peripheral shape of the slide member 71, and there is almost no gap between the partition wall 93 and the slide member 71 as shown in FIG. As shown in FIG. 23B, the rib 94 is formed on the upper portion of the second case 70 when the cord holding member 72 is pushed further than when the elastic arm 86 is engaged with the tapered surface 91a. It has a function of coming into contact with the contact surface 70a and preventing further pressing. If there is no rib 94, the cord holding member 72 can be further pushed down from the state shown in FIG. 23 (b). In this case, a gap is left between the pedestal 93 and the slide member 71. There is a possibility that the locking portion 5a at the tip may be pinched and cause a malfunction. Therefore, in this modification, the rib 94 is provided to prevent such a malfunction.

  Also, as shown in FIG. 25A, the slide member 71 and the cord holding member 72 are provided with marks 71a and 72b, respectively, and when the cord holding member 72 is inserted into the slide member 71, By using these marks 71a and 72b, alignment in the rotation direction can be easily performed.

  Next, an engagement structure between the first case 69 and the second case 70 will be described with reference to FIG. The first case 69 includes an inclined portion 69a and an engaging recess 69b following the inner periphery at a position adjacent to the contact surface 69c with the second case 70. The second case 70 includes a holding portion 96 having a tapered surface 96a on the outer periphery at a position adjacent to the contact surface 70c with the first case 69, and an engaging convex portion 70b. The engaging convex part 70b is provided between the holding part 96 and the contact surface 70c. When the first case 69 is rotated in the direction of the arrow R in a state where the contact surface 69c and the contact surface 70c are close to or in contact with each other, the inclined portion 69a is guided by the taper surface 96a toward the engagement convex portion 70b. The engaging convex portion 70 b is guided into the engaging concave portion 69 along the slope of the inclined portion 69 a, and the engaging convex portion 70 b and the engaging concave portion 69 b are engaged, and the first case 69 is engaged with the second case 70. On the other hand, relative rotation is impossible. Further, in this state, the inclined portion 69 a is sandwiched between the holding portion 96 and the contact surface 70 c, so that the first case 69 cannot be separated from the second case 70 in the axial direction. When the engagement between the first case 69 and the second case 70 is a screw type, the engagement between the first case 69 and the second case 70 is released by the rotation of the cord equalizer 8 during normal operation. Although there is a possibility, according to this modification, it is possible to prevent the engagement between the first case 69 and the second case 70 from being unexpectedly released. In this modification, the first case 69 and the second case 70 are engaged at two locations evenly in the circumferential direction (at intervals of 180 degrees), but the number and positions of the locations to be engaged are particularly limited. Not. The unevenness formed in the first and second cases 69 and 70 may be reversed.

Next, with reference to FIG. 28 to FIG. 29, an operation for replacing a conventional code equalizer having no safety function with the code equalizer 8 of the present modification will be described.
As a premise for replacement, the first case 69, the second case 70, the slide member 71, and the spring 77 are pre-integrated parts (hereinafter referred to as “parts”) and cannot be disassembled. 10 and the cord holding member 72 (including the attachment of the lifting / lowering cord 5 to the cord holding member 72).

  As shown in FIG. 28, the operation cord 10 is inserted in a state where the cord holding member 72 is not attached to the part. First, the operation code 10 is inserted into the operation code insertion hole 74 on the bottom surface of the part. Next, the operation cord 10 is continuously inserted and inserted into the gap G between the inclined engagement portion 91 and the inclined slide portion 92. The inclined engagement portion 91 and the inclined slide portion 92 have tapered surfaces 91a and 92a on the operation cord insertion hole 74 side, respectively, and the operation cord 10 is guided to the gap G by the tapered surfaces 91a and 92a. Next, the operation cord 10 is pulled out to the opening side of the upper surface of the part to make a knotted ball (locking portion 10a). Next, the operation cord 10 is pulled back, and the knot ball is positioned at the upper surface position of the operation code insertion hole 74. As shown in FIGS. 28 to 29, the inclined engaging portion 91 also includes a tapered surface 91b on the opening side of the upper surface of the part, whereby the knot ball is connected to the inclined engaging portion 91 and the inclined slide portion 92. When moving to the lower side, the knot ball is guided to the gap G.

(Third embodiment)
The first and second embodiments relate to a configuration in which the cord equalizer 8 holds the end of the lifting / lowering cord 5 and the operation cord 10 is connected to the cord equalizer 8, but in this embodiment, as shown in FIG. Further, the end of the lifting / lowering cord 5 is held by a bottom cap 6 having the same configuration as that of the first embodiment, and the code equalizer 8 is held with respect to the lifting / lowering cord 5 at a position below the lifting / lowering cord lead-out portion 7 by a predetermined distance. ing.
Hereinafter, the configuration of the code equalizer 8 of the present embodiment will be described in detail.

  The code equalizer 8 used in the present embodiment is formed in a substantially cylindrical shape as shown in FIG. 31A, and an insertion groove 51 is formed in the vertical direction on the upper part, and the lifting cord 5 is moved downward from the insertion groove 51. It can be inserted. FIGS. 31B and 31D show a state where three lifting cords 5 are inserted. The code equalizer 8 includes two members, an equalizer main body 50 shown in FIGS. 32A and 32B, and a cover 53 (plate spring) shown in FIG. 32C, and is preferably made of a synthetic resin. .

  The equalizer main body 50 is formed with a substantially frustoconical upper insertion part 66 at the upper part and a substantially frustoconical lower insertion part 67 at the lower part, and a circle having a diameter smaller than the diameter of the inner peripheral surface 63 of the cover 53 at the middle in the vertical direction. A columnar connection portion 57 is formed in the vertical direction, and an upper holding portion 66 and a lower insertion portion 67 are integrally formed. As shown in FIG. 32 (b), a plate-like connection wall 68 is formed vertically on the connection portion 57 and is integrated with the lower insertion portion 67. A second passage hole 14 is formed in the lower insertion portion 67 and is separated at two places by a connection wall 68. As shown in FIG. 31 (d), three lifting cords 5 can be inserted into one second passage hole 14.

  As shown in FIG. 32A, the upper insertion portion 66 of the equalizer main body 50 is formed with six insertion grooves 51 radially toward the outer periphery. The width of each insertion groove 51 is slightly wider than the diameter of the lifting / lowering cord 5, and the lifting / lowering cord 5 can be inserted as shown in FIG. 31 (d) (maximum of six in this example). When the number of the lifting / lowering cords 5 is less than 6, it can be selectively used. As shown in FIGS. 32 (b) and 33 (a), the lower surface 55 on the base end side of the insertion groove 51 of the upper insertion portion 66 is formed horizontally. Further, a tapered surface 54 is formed toward the distal end side of the insertion groove 51.

  As shown in FIG. 32 (c), the cover 53 is a cylindrical leaf spring having an open / close end 58 and is elastically deformable. Tapers 59 and 61 are formed on the upper and lower edges of the cover 53 to form a vertically symmetrical shape. The upper insertion portion 66 of the equalizer main body 50 is formed with a tapered surface 54 at an inclination corresponding to the taper 59 of the cover 53, and the lower insertion portion 67 of the equalizer main body 50 is inclined at an inclination corresponding to the taper 61 of the cover 53. A tapered surface 56 is formed. Accordingly, the cover 53 can be easily assembled without upper and lower sides. As shown in FIG. 32 (a), an inner peripheral abutment portion 62 standing in a cylindrical shape is formed on the upper portion of the lower insertion portion 67, and the peripheral surface of the inner peripheral abutment portion 62 is the inner periphery of the cover 53. The diameter corresponds to the surface 63. Further, as shown in FIG. 32A, one of the connection walls 68 is formed as a detent 52 so as to be continuous with the outer periphery of the equalizer main body 50, and the open / close end 58 of the detent 52 is attached to the cover 53. Abutting from both sides, the cover 53 does not rotate relative to the equalizer main body 50. Since the relative position does not rotate in the assembled state and the positions of the insertion groove 51 and the opening / closing end 58 are shifted, the lifting / lowering cord 5 is not positioned between the opening / closing end 58 and the lifting / lowering cord 5 is carelessly disposed. It is possible to prevent slipping through the gap.

  In order to assemble the cover 53 to the equalizer main body 50, the opening / closing end 58 is elastically opened in the direction of arrow G in FIG. Then, since the cover 53 is a leaf spring and has upper and lower tapers 59, 61, it is invited to the equalizer main body portion of the corresponding shape and fits snugly. When the open / close end 58 overlaps the rotation stopper 52, the cover 53 can be rotated slightly to obtain a proper assembled state.

  As shown in FIG. 33A, in the assembled state, an internal space (locking portion accommodating portion) 15 surrounded by the equalizer main body 50 is generated inside the cover 53, and a knotted ball ( (Projection, locking part) 60 can be accommodated. Each knot 60 is larger than the width of each insertion groove 51 and larger than the radial width of each second passage hole 14. In addition, the 1st passage hole 13 is produced | generated between the internal peripheral surface 63 and each penetration groove | channel 51 in the assembled state. As shown in FIG. 31 (c), the first passage hole 13 communicates with the second passage hole 14, and the lifting / lowering cord 5 can be inserted vertically as shown in FIGS. 31 (b) and 31 (d).

  The user can grasp the cord equalizer 8 and pull it downward to pull down the lifting / lowering cord 5 to adjust the shielding state. Even if the lifting / lowering cord 5 below the cord equalizer 8 is pulled, the knotting ball 60 does not come out of the second passage hole 14 and can be pulled. As shown in FIG. 33 (a), when the code equalizer 8 is pulled in the longitudinal direction of the lifting / lowering cord 5 and a force in the direction of arrow A is applied, an upward tension is generated in the lifting / lowering cord 5 due to the reaction, and the lower surface 55 is interposed. Although pressure is applied to the knotting ball 60, the lower surface 55 is a horizontal plane, so that the knotting ball 60 does not move and the lifting cord 5 can be pulled down. In addition, the lower surface 55 should just be comprised so that it may function as a latching | locking part holding surface which hold | maintains the knot ball 60, and may be a taper surface which goes to the radial inside of the equalizer main body 50 besides a horizontal surface. . When a downward load is applied to the code equalizer 8 with the plurality of lifting / lowering cords 5 substantially parallel to each other in this way, the knotting balls 60 are held by the holding structure of the cord equalizer 8 and the lifting / lowering cords 5 can be pulled down. It becomes. As described above, the code equalizer 8 of the present embodiment may perform the operation of lowering the lifting / lowering cord 5 by grasping the code equalizer 8 itself and lowering the code equalizer 8, and the lifting / lowering cord 5 is below the code equalizer 8. The lifting / lowering cord 5 may be pulled down by pulling down the portion. Regardless of which method is used, a downward load is applied to the cord equalizer 8 in a state where the plurality of lifting cords 5 are substantially parallel to each other. The knot ball 60 does not come off during the operation. Further, when the cord equalizer 8 is gripped and pulled down, a force is easily applied to the upper surface of the cord equalizer 8, and the cord equalizer 8 on this surface has a plurality of members A and B in the circumferential direction as shown in FIG. , C, for example, when a force is applied only to the member A, the member A is unexpectedly separated. On the other hand, according to the present embodiment, since a plurality of members constituting the code equalizer 8 are not divided in the circumferential direction on the upper surface of the code equalizer 8, such an unexpected division does not occur. Thus, the code equalizer 8 of the present embodiment is not divided unexpectedly during operation, and has excellent operability.

  When a predetermined load C is applied by the foreign object W in the state shown in FIG. 34 (a), a plurality of lifting / lowering cords 5 are expanded from each other (although described here with two) as shown in FIG. 33 (b). A pulling force in the opening directions C3a and C3b acts. The elevating cord 5 protrudes from each insertion groove 51, and the taper 59 at the upper part of the cover 53 is expanded against elasticity by the component force in the directions of arrows E1 and E2 accompanying the tension generated in the elevating cord 5. Further, the two knots 60 also move in the direction away from each other (radially outward direction) along the horizontal plane. The knotting ball 60 reaches the tapered surface 54, spreads the inner peripheral surface 63, and leaves the inner space 15 as shown in FIG. 33 (c). Even after the detachment, the state where the lifting / lowering cord 5 is inserted into the second passage hole 14 is maintained. In this manner, the code equalizer 8 and the lifting / lowering cord 5 can be moved relative to each other, and the code equalizer 8 can be moved in the direction of arrow F shown in FIG. Then, the code equalizer 8 moves downward along the lifting / lowering cord 5 to the position shown in FIG. If the tension is further applied from this state, the lifting / lowering cord 5 is detached from the bottom cap 6, but the operation is the same as in the first embodiment. In this way, when a load is applied to the lifting / lowering cord 5 in the direction in which the plurality of lifting / lowering cords 5 are expanded, the holding of the knotting balls 60 by the holding structure of the cord equalizer 8 is released, and the cord equalizer 8 is moved to the lifting / lowering cord 5. Therefore, the length of the loop structure formed by the lifting / lowering cord 5 and the cord equalizer 8 is increased to ensure safety.

  In order to return to the operable state from the state shown in FIG. 34B, the cord equalizer 8 is raised along the lift cord 5 to the position of the knot ball 60 and the cover 53 is slightly expanded along the taper 59. Thus, the return work is easy if it is introduced into the internal space 15.

  It should be noted that, instead of the oblique angle as shown in FIG. 33 (b), even when a predetermined tension in the opposite directions C4a and C4b acts on the lifting / lowering cord 5 as shown in FIG. The knotted ball 60 is separated from the internal space 15 by being elastically expanded in the direction of E2.

  Also, depending on the load balance, all knots may not be released at once. For example, as shown in FIG. 35 (a), a downward force C acts on the lifting / lowering cord 5, and the knotting ball 60 of one lifting / lowering cord 5a is released and the lifting / lowering cord 5b is not detached. The load C of the foreign object W may act. In such a case, as shown in FIG. 35B, when the lifting / lowering cord 5b is pulled out from the head box 1, the bottom rail 2 and the slat (shielding material) 3 are lifted by a certain amount while being inclined. As the inclination of the bottom rail 2 increases, the tension applied to the lifting / lowering cord 5b increases, and when this tension reaches a predetermined value, the knotting balls 60 of the lifting / lowering cord 5b spread the cover 53 and separate from the internal space 15. As shown in FIG. 34 (b).

  Further, the downward force C acts on the lifting / lowering cord 5 in a biased manner, so that the knotting ball 60 of one lifting / lowering cord 5b is detached as shown in FIG. 36 (a) and detached as shown in FIG. 36 (b). In some cases, the load C of the foreign substance W acts on the lifting cord 5b on the side, but even in such a case, safety is ensured by the following actions. While the code equalizer 8 is positioned at the position of the knotting ball 60 of the lifting / lowering cord 5a that has not been detached, the lifting / lowering cord 5b and the code equalizer 8 on the separated side move relative to each other, as shown in FIG. The lower part of the lifting / lowering cord 5b than the code equalizer 8 is pulled up to the upper side of the code equalizer 8, and the length of the part of the lifting / lowering code 5b between the code equalizer 8 and the bottom cap 6 is shortened. And the tension | tensile_strength added to the raising / lowering cord 5b becomes large as the position of the foreign material W falls. When the tension reaches a predetermined value, the end portion of the lifting / lowering cord 5b comes off from the bottom cap 6 as shown in FIG. In order to return to the operable state from the state as shown in FIG. 36 (d), the lifting / lowering cord 5 is inserted into the first passage hole 13 of the cord equalizer 8 and pulled out from the second passage hole 14. The knotting balls 60 may be introduced into the internal space 15 along the taper 59 while the cover 53 is slightly expanded while being relatively moved along the lifting cord 5 to the position of the knotting balls 60. Return work may be performed easily.

(Modification 1 of 6th Embodiment)
In the sixth embodiment, the cover (plate spring) 53 is provided so that the knotted ball (projection) 60 does not move in the outer circumferential direction of the cord equalizer 8. However, in this modification, the equalizer main body is used as a holding means that is not the cover 53. It was set as the structure hold | maintained at a snap. As shown in FIG. 37, a portion narrower than the diameter of the lifting / lowering cord is provided in the outer peripheral direction than the first passage hole 13 through which the lifting / lowering cord 5 is inserted to form a snap. Specifically, a narrow space between the protrusions 65 and 65 provided in the insertion groove 51 as shown in FIG. By adopting such a configuration, as in the sixth embodiment, as shown in FIG. 37 (e), the lifting / lowering cord 5 and the code equalizer 8 can be used without a special user pressing with a finger or the like when the cord equalizer 8 is pulled. Is sufficiently retained. Also, as shown in FIG. 37 (f), when the pulling force in the expanding direction C3a, C3b of the plurality of lifting / lowering cords 5 acts, the lifting / lowering cords 5 come out from between the protrusions 65, 65 of the insertion groove 51. The knot ball 60 is detached, and the cord equalizer 8 and the lifting / lowering cord 5 can be moved relative to each other.

(Modification 2 of 6th Embodiment)
The cord equalizer 8 of this modification is the same as that of the sixth embodiment and the modification 1 in the holding structure of the knotting ball 60, and a load is applied to the lifting cord 5 in the direction in which the plurality of lifting cords 5 are expanded. The same is true for the action of sometimes detaching the knot ball 60. On the other hand, in this modified example, as shown in FIG. 38, the knotted ball (locking portion) 60 is provided at the end of the lifting / lowering cord 5, and the operation cord 10 is connected to the lower side of the cord equalizer 8. ing. An operation cord 10 is connected to the bottom cap 6 instead of the lifting / lowering cord 5.

  In this modified example, as shown in FIG. 38A, when a load C is applied to the lifting / lowering cord 5 in the direction of expanding the plurality of lifting / lowering cords 5, as shown in FIG. 38B, the code equalizer 8 Is separated from the lifting / lowering cord 5 and dropped to ensure safety. To return from the state shown in FIG. 38B to the operable state, the same method as that in the sixth embodiment and the first modification can be employed.

(Other embodiments)
The present invention can also be implemented in the following embodiments.
-The number of raising / lowering cords should just be two or more, and may be three or more.
The cord connected to the cord equalizer and suspended from above may be a cord other than the lifting cord, such as a tilt cord.
・ It can be applied to pleated screens and roman shades that have operation cords hanging from the headbox and equipped with code equalizers. For vertical blinds that have operation cords suspended from hanger rails and equipped with code equalizers Is also applicable.
The cord equalizer may be used as a stopper for stopping the lower limit by bringing the upper surface into contact with the cord lead-out portion of the headbox so that the cord equalizer can be stopped at the lower limit position of the solar shading material.
In the first and second embodiments, instead of connecting the operation cord 10 to the cord equalizer 8, the lifting cord 5 may be extended and the lifting cord 5 may be connected to the bottom cap 6.

1: Support member (head box, head rail)
2: Bottom rail (moving member)
3: Slat (shielding material, moving member)
4: Ladder cord 5, 5a, 5b: Lifting cord (tensile cord)
6: Bottom cap (moving member)
7: Elevating cord lead-out portion 8: Code equalizer 9: Tape holder 10: Operation cord 11: Center member 13: First passage hole 14: Second passage hole 15: Internal space 16: First resistance applying portion 17: Second resistance Giving part 18: fixed shaft 19: elastic part 20: uneven surface 21: insertion hole 22: movable clamping part 23: fixed clamping part 24: support part 25: release operation piece 26: tilt knob 27: tilter opening 28: Tilt drum 29: Tilt drum 30: Shaft 31: Leader runner 32: Runner 33: Moving rod (moving member)
34: fixed rod 35: case 36: slit 37: fixed support portion 38: communication slit 39: rotation hole 40: release bar 41: extra length 42: weight adjusting portion 43: rotating shaft 45, 46: engagement member 50: Equalizer body 51: Insertion groove 53: Cover (leaf spring)
54: Tapered surface 55: Lower surface 57: Connection portion 58: Opening / closing end 60: Knotted ball (projection)
62: Inner peripheral contact portion 64: Upper surface 66: Upper insertion portion 67: Lower insertion portion 68: Connection wall 69: First case 70: Second case 71: Slide member 72: Cord holding member 73: Code guide portion 74: Operation code insertion hole 75: first space 76: second space 77: spring (biasing means)
78: Slide shaft (slide part)
79: Spring locking part 80: Third space part 81: Flange 82: Code load detection part 83: Flange locking part 84: Engagement shaft (case side engagement part)
85: Cylindrical portion 86: Arm (code holding member side engaging portion)
87: Locking part 88: Convex part 89: Cord fixing part 91: Inclining engagement part 92: Inclining slide part 93: Partition wall 94: Rib 96: Holding part

Claims (18)

A cord equalizer for holding a plurality of tensile cords suspended from a support member installed in a building, wherein the cord equalizer is arranged in a downward direction to the cord equalizer with the plurality of tensile cords substantially parallel to each other. Holding the plurality of tension cords when a load is applied and causing the cord equalizer to undergo elastic deformation when a load is applied to the tension cords in a direction in which the plurality of tension cords are expanded; or It is configured to release the loop structure formed by the plurality of tensile cords and the cord equalizer by dividing the cord equalizer, or to increase the length of the loop structure,
The cord equalizer includes a plurality of members each holding the tensile cord,
The plurality of members are not separated when a downward load is applied to the cord equalizer in a state where the plurality of tension cords are substantially parallel, and the plurality of members are expanded in a direction in which the plurality of tension cords are expanded. Configured to release the loop structure by being separated from each other when a load is applied to the tension cord,
The cord equalizer includes a center member, and first and second engagement members that engage with the center member,
Each of the first and second engaging members includes a base and a pair of arms extending from the base,
First and second engagement member, the arm of the arm and the second engaging member of the first engagement member is engaged with the central member so as to be aligned in the vertical direction from each other, code equalizer. The code equalizer according to claim 1, wherein a distal end surface of one of the first and second engaging members is in contact with a distal end surface of the other base of the first and second engaging members. A cord equalizer for holding a plurality of tensile cords suspended from a support member installed in a building, wherein the cord equalizer is arranged in a downward direction to the cord equalizer with the plurality of tensile cords substantially parallel to each other. Holding the plurality of tension cords when a load is applied and causing the cord equalizer to undergo elastic deformation when a load is applied to the tension cords in a direction in which the plurality of tension cords are expanded; or It is configured to release the loop structure formed by the plurality of tensile cords and the cord equalizer by dividing the cord equalizer, or to increase the length of the loop structure,
The cord equalizer includes a case, a cord holding member engaged with the case, and a slide member for reducing a holding force of engagement between the cord holding member and the case,
The cord holding member forms the loop structure by holding the plurality of tensile cords in the engaged state with the case, and the loop structure is released in the released state from the case. Configured as
The sliding member slides with respect to the case to reduce the holding force of the engagement when a load is applied to the plurality of tension cords in a direction in which the plurality of tension cords are expanded. to separate the cord holding member from the case, code equalizer. The code equalizer according to claim 3, wherein the slide member includes a code weight detection unit that detects a load applied to the code. The code equalizer according to claim 3 or 4, wherein the slide member is biased in a direction away from the case. The case includes a case side engaging portion,
The cord holding member includes a cord holding member side engaging portion that engages with the case side engaging portion,
The sliding member reduces the holding force of the engagement by displacing the cord holding member side engaging portion by the sliding movement or releasing the suppression of the displacement of the cord holding member side engaging portion; The code equalizer according to any one of claims 3 to 5. The case side engagement portion is an engagement shaft,
The cord holding member side engaging portion is a pair of elastic arms that engage with the engaging shaft so as to sandwich the engaging shaft,
The slide member reduces a holding force of the engagement by sliding a slide portion disposed between the pair of elastic arms to widen an interval between the pair of elastic arms. The described code equalizer. The case side engagement portion includes a tapered surface that protrudes from the inner surface of the case and is inclined upward toward the radial center of the case,
The cord holding member side engaging portion is an elastic arm that engages with the tapered surface,
The code equalizer according to claim 6, wherein the slide member includes a slide portion that is provided on a side opposite to the tapered surface across the elastic arm and changes an engagement force between the tapered surface and the elastic arm. . The code equalizer according to claim 8, wherein the slide portion includes a tapered surface inclined upward toward the elastic arm. The slide member is cylindrical.
The cord holding member is accommodated in the slide member,
The cord holding member includes a partition wall between a cord holding portion that holds the tensile cord and the elastic arm,
The code equalizer according to claim 8 or 9, wherein a rib is erected on the side of the elastic arm in the partition wall. The cord equalizer according to any one of claims 3 to 7, wherein the cord holding member is configured to hold one tensile cord in a state where the engagement with the case is released. The cord equalizer according to any one of claims 3 to 11, wherein the cord holding member is configured to be able to temporarily fix the plurality of tensile cords in a state where the engagement with the case is released. . A cord equalizer for holding a plurality of tensile cords suspended from a support member installed in a building, wherein the cord equalizer is arranged in a downward direction to the cord equalizer with the plurality of tensile cords substantially parallel to each other. Holding the plurality of tension cords when a load is applied and causing the cord equalizer to undergo elastic deformation when a load is applied to the tension cords in a direction in which the plurality of tension cords are expanded; or It is configured to release the loop structure formed by the plurality of tensile cords and the cord equalizer by dividing the cord equalizer, or to increase the length of the loop structure,
Each of the plurality of tensile cords includes a locking portion,
The cord equalizer holds the locking portion when a downward load is applied to the cord equalizer in a state where the plurality of tension cords are substantially parallel, and expands the plurality of tension cords. Configured to release the retaining portion when a load is applied to the plurality of tension cords,
The cord equalizer includes an equalizer body and a cover that can be elastically deformed,
The equalizer body includes a plurality of insertion grooves through which the tension cord can be inserted and the locking portion cannot be inserted, and a locking portion storage portion that can store the locking portion,
The cover can be attached to the equalizer main body so as to cover the locking portion accommodating portion,
The locking portion is held in the locking portion accommodating portion by the elastic force of the cover,
A code equalizer comprising at least one of the following configurations (1) to (2).
(1) The equalizer body includes a tapered surface that guides the locking portion radially outward when a load is applied to the plurality of tension cords in a direction in which the plurality of tension cords are expanded.
(2) The cover includes a taper at an upper and lower end edge of the cover .
The code equalizer according to claim 13, comprising the configuration (2). The plurality of tensile cords are accommodated one by one in the insertion groove,
The equalizer body comprises a locking portion holding surface for holding the locking portion when the applied downward load to the cord equalizer while substantially parallel tensile cord of the plurality of, claim 13 or claim Item 15. A code equalizer according to item 14 . The cord equalizer according to claim 15, wherein the locking portion holding surface includes a flat surface that is substantially perpendicular to a longitudinal direction of the tensile cord, or a tapered surface that faces radially inward of the equalizer main body. The code equalizer according to any one of claims 13 to 16, comprising the configuration (1) . The cord equalizer includes a plurality of insertion grooves through which the tension cord can be inserted and the locking portion cannot be inserted,
The cord equalizer according to claim 13, wherein the insertion groove is configured to elastically hold the tensile cord.