JP6800136B2 - Code equalizer, cloaking device - Google Patents

Description

The present invention relates to shielding devices such as horizontal blinds, raised curtains, pleated screens, roll-up screens, vertical blinds, curtain rails, accordion curtains, vertical pleated screens, vertical roll screens, panel curtains, and such shielding. Regarding the code equalizer used in the device.

In the shielding device, there is a type in which the opening / closing operation of 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 at the bottom of a slats or fabric (shielding material, moving member) suspended from a support member (head box). It is attached (in some cases, it may be directly attached to the lower end of the shielding member), and the other ends of the plurality of elevating cords are routed in the head box and are aggregated at one end of the head box and hung down. By pulling or pulling back the separate operation cord connected to the lifting cord part on the other end side, the knob (cord equalizer) provided on the lifting cord part on the other end side, or the lifting cord end on the other end side. , The shielding material is raised and lowered. In the type that opens and closes to the left and right, for example, one end of a plurality of tension cords is attached to a leading runner or a moving stile provided on the moving leading side of a shielding material suspended from a hanger rail, and the other end of the plurality of tensile cords. Is routed around the stile and the support member (head rail), and is gathered at one end of the head rail or a wall fixing stile and hung down. By pulling or pulling back the separate operation cord connected to the tension cord portion on the other end side, the knob (cord equalizer) provided on the tension cord portion on the other end side, or the tension cord end portion on the other end side. , Open and close the shielding material to the left and right. In some cases, the movement in one direction is anti-automatically operated by using an urging means such as a weight or a spring.
(For example, refer to Patent Document 1 as a form that opens and closes up and down).

Japanese Unexamined Patent Publication No. 8-189270

In Patent Document 1, the ends of a plurality of tension cords are connected to a safety block, the safety block is provided with a cord hooking means (slot) and an opening larger than the knot of the tension cord, and a child pushes the neck between the plurality of tension cords. However, a technique is disclosed in which the knot shifts in the direction of the opening and automatically comes off. In such a configuration, the knot may not be reliably displaced and there is room for improvement in reliability.
Therefore, there is a demand for a technique capable of reliably removing the catch of the human body or the like in an emergency or reliably reducing the load on the human body or the like.

The present invention has been made in view of such circumstances, and provides a string-type shielding device capable of reliably removing foreign matter from being caught or dampening a load on a human body or the like.

According to the present invention, it is a cord equalizer that holds a plurality of tensile cords hung from a support member installed on a building, and the cord equalizer is in a state where the plurality of tensile cords are substantially parallel to each other. The cord equalizer holds the plurality of tensile cords when a downward load is applied to the cord equalizer, and is elastic to the cord equalizer when a load is applied to the tensile cords in a direction of expanding the plurality of tensile cords. 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 the direction of expanding a plurality of tensile cords, the load is used to cause elastic deformation of the cord equalizer or to divide the cord equalizer, whereby a plurality of cord equalizers are formed. The loop structure formed by the book tension cord and cord equalizer is released or the circumference of the loop structure is extended. It was found that such a configuration can surely remove the catch of foreign matter or reduce the load on the human body and the like, and completed the present invention.

Hereinafter, various embodiments of the present invention will be illustrated. The embodiments shown below can be combined with each other.
Preferably, the cord equalizer comprises a plurality of members, each of which holds the tension cord, and the plurality of members when a downward load is applied to the cord equalizer with the plurality of tension cords substantially parallel to each other. It is configured to be separated from each other and release the loop structure 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 tensile cords that the cord equalizer can hold is equal to or greater than the number of the plurality of members, and the number of the tensile cords that the cord equalizer can hold. When is greater than the number of the plurality of members, the cord equalizer allows at least one of the tensile cords to be detached from the cord equalizer through a gap between the plurality of members caused by the plurality of members being separated from each other. It is configured as follows.
Preferably, at least one of the plurality of members is provided with an elevating cord guide surface that guides the tension cord to the boundary surface of the plurality of members.
Preferably, the cord equalizer comprises a central member and one or more engaging members that engage the central member, the central members being spaced apart from each other along the central axis. It is provided with an upper locking portion and a lower locking portion, and the engaging member is engaged with the central member between the upper locking portion and the lower locking portion.
Preferably, the engaging member is engaged with respect to the central axis.
Preferably, the cord equalizer comprises a central member and first and second engaging members that engage the central member, the first and second engaging members extending from the base and the base, respectively. A pair of arms are provided, and the first and second engaging members are engaged with the central member so that the arms of the first engaging member and the arms of the second engaging member are aligned with each other in the vertical direction.
Preferably, the tip surface of one of the first and second engaging members of the arm abuts on the tip surface of the other base of the first and second engaging members.
Preferably, the cord equalizer comprises a case, a cord holding member engaged with the case, and a sliding member for reducing the holding force of engagement between the cord holding member and the case. The cord holding member holds the plurality of tensile cords to form a loop structure in the engaged state with the case, and the loop structure is released in the disengaged state with 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, the slide member slides with respect to the case to hold the engagement. Is reduced to separate the cord holding member from the case.
Preferably, the slide member has a cord weighting detector that detects a load applied to the cord.
Preferably, the slide member is urged away from the case.
Preferably, the case includes a case-side engaging portion, the cord-holding member comprises a cord-holding member-side engaging portion that engages the case-side engaging portion, and the slide member is driven by the slide movement. The holding force of the engagement is reduced by dissociating the engaging portion on the cord holding member side or releasing the suppression of the displacement of the engaging portion on the cord holding member side.
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 the engaging shaft so as to sandwich the engaging shaft. The slide member reduces the holding force of the engagement by sliding and moving the slide portion arranged between the pair of elastic arms to widen the distance between the pair of elastic arms.
Preferably, the case-side engaging portion comprises a tapered surface that projects 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 on the tapered surface. It is an elastic arm that engages, and the slide member includes a slide portion that is provided on the side opposite to the tapered surface and that changes the engaging force between the tapered surface and the elastic arm.
Preferably, the sliding portion comprises a tapered surface that slopes upward toward the elastic arm.
Preferably, the slide member is tubular, the cord holding member is housed in the slide member, and the cord holding member is a partition wall between the cord holding portion holding the tension cord and the elastic arm. A rib is erected on the elastic arm side of the partition wall.
Preferably, the cord holding member is configured to hold one tension cord in a disengaged state with the case.
Preferably, the cord holding member is configured so that the plurality of tension cords can be temporarily fixed in a state where the engagement with the case is released.
Preferably, the plurality of tension cords each include a locking portion, and the cord equalizer is said to be said when a downward load is applied to the cord equalizer with the plurality of tension 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 the direction of expanding the plurality of tension cords.
Preferably, the cord equalizer comprises an equalizer body and an elastically deformable cover, the equalizer body having a plurality of insertion grooves into which the tension cord can be inserted and the locking portion cannot be inserted. The cover is provided with a locking portion accommodating portion capable of accommodating the locking portion, and the cover can be attached to the equalizer main body so as to cover the locking portion accommodating portion, and the locking portion is elastic of the cover. It is held in the locking portion accommodating portion by force.
Preferably, the plurality of tension cords are housed one by one in the insertion groove, and the equalizer main body is when a downward load is applied to the cord equalizer with the plurality of tension cords substantially parallel to each other. Is provided with a locking portion holding surface for holding the locking portion.
Preferably, the locking portion holding surface comprises a plane substantially perpendicular to the longitudinal direction of the tension cord, or a tapered surface that extends radially inward 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 comprises a plurality of insertion grooves that allow the tension cord to be inserted and that the locking portion cannot be inserted, and the insertion groove is configured to elastically hold the tension cord. Will be 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 tension cord so as to penetrate the cord equalizer, and the tension cord pulls down a portion of the tension cord below the cord equalizer to pull the cord equalizer. It is held so that it can be pulled down from the bottom.
Preferably, the cord equalizer is composed of a single member, or when the cord equalizer is composed of a plurality of members, these plurality of members are not divided in the circumferential direction on the upper surface of the cord equalizer.
According to another aspect, the present invention includes a support member installed on a building, a plurality of tension cords hanging from the support member, a cord equalizer for holding the plurality of tension cords, and the tension. A shielding device including a moving member that moves by pulling a cord to adjust the shielding state at the opening of the building between an open state and a closed state, wherein the code equalizer is the code equalizer described above. It is intended to provide a shielding device.

A horizontal blind according to the first embodiment of the present invention is shown, (a) is a front view, (b) is a side view, and (c) is a front view when the slat 3 is raised. It is a front view which shows the cord equalizer 8, (a) is a state which two engaging members 45, 46 and a central member 11 are engaged, (b) is one of the engaging members 45, 46 from a central member 11. Indicates a separated state. An exploded view of the code equalizer 8 is shown, (a) is a central member 11, (b) is a plan view of the right engaging member 45, (c) is a plan view of the right engaging member 45, and (d) is a left engaging member. Members 46 and (e) are bottom views of the left engaging member 46. (A) is a plan view showing the action of separating the engaging member 45 from the central member 11 when a force in the direction of arrow X is applied to the engaging member 45, and (b) is a code equalizer in which unexpected division is likely to occur. It is a top view which shows the example of. It is a front view which shows the action when the foreign matter W is caught in the loop structure formed by the elevating cord 5 and the cord equalizer 8, and (a) is the state before the engaging member 45 is separated from the central member 11. b) shows the state after separation. (A) A perspective view of the end of the bottom rail 2, (b) a vertical sectional view of the end of the bottom cap 6, (c) a vertical sectional view of the end of the bottom cap 6 (open state), and (d). ~ (E) is a front view showing the action when a foreign substance is caught in the operation code 10. It is sectional drawing which shows the modification 1 of the 1st Embodiment, and shows the modification of the engagement structure of the central member 11 and the engagement members 45, 46. Modification 2 of the first embodiment is shown, and FIGS. (A) to (C) are perspective views seen from the upper surface side, the side surface side, and the bottom surface side, respectively. A modification 2 of the first embodiment is shown, (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 exploded perspective view showing the engaging members 45 and 46 as the central member. 11 is an exploded perspective view showing a state of being removed from 11. A modification 2 of the first embodiment is shown, and is a left side view of the central member 11. It is a front view which shows the action when the foreign matter W is caught in the loop structure formed by the elevating cord 5 and the cord equalizer 8 in the horizontal blind of the modification 3 of the 1st Embodiment of this invention, (a) is engaged. 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 the 2nd Embodiment of this invention. It is a bottom view which shows the bottom surface of the code equalizer 8 of FIG. It is sectional drawing which showed from the side surface side of the cord equalizer 8 of FIG. It is a side view which shows the case part of the code equalizer 8 of FIG. It is sectional drawing which showed from the side surface side which shows the case part of the code equalizer 8 of FIG. It is a side view which shows the slide member 71 of the code equalizer 8 of FIG. 9 is a cross-sectional view showing the slide member 71 of the code equalizer 8 of FIG. 9 from the side surface side. It is a perspective view which showed the cord holding member 72 of the cord equalizer 8 of FIG. It is sectional drawing which showed the operation of the code equalizer 8 of FIG. 9 from the side surface side. It is sectional drawing which showed the operation of the code equalizer 8 of FIG. 9 from the side surface side. It is sectional drawing which showed the operation of the code equalizer 8 of FIG. 9 from the side surface side. It is sectional drawing which showed the operation of the code equalizer 8 of FIG. 9 from the side surface side. It is sectional drawing which showed from the side surface side of the code equalizer 8 of the modification 1 of the 2nd Embodiment of this invention. It is sectional drawing which showed from the side surface side of the code equalizer 8 of the modification 2 of the 2nd Embodiment of this invention. (A) to (b) are perspective views of the cross section of the code equalizer 8 of FIG. 22 viewed from different angles. (A) to (b) are perspective views of the cord holding member 72 of the cord equalizer 8 of FIG. 22 viewed from different angles. (A) to (b) are perspective views of the code equalizer 8 of FIG. 22 viewed from different angles. It is an exploded perspective view of the code equalizer 8 of FIG. It is a perspective view for demonstrating the engaging method of the 1st case 69 and the 2nd case 70 of the cord equalizer 8 of FIG. FIG. 5 is a cross-sectional perspective view for explaining a method of attaching the operation code 10 to the code equalizer 8 of FIG. 22. 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 the 3rd Embodiment of this invention. The code equalizer 8 of the third embodiment of the present invention is shown, (a) is a perspective view, (b) is a perspective view in a state where the elevating cord 5 is inserted, (c) is a plan view, and (d) is an elevating cord 5. It is the bottom view of the state which inserted. A state in which the cover 53 is removed from the code equalizer 8 of the third embodiment of the present invention is shown, (a) is a perspective view, and (b) and (d) are perspective views of different angles in the same state as (a). c) is a perspective view of the cover 53. The code equalizer 8 of the third embodiment of the present invention is shown, (a) is a cross-sectional view, (b) is a cross-sectional view showing an action when a foreign substance is caught, and (c) is an elevating cord 5 as a code equalizer. FIG. 5 (d) is a cross-sectional view showing an action of moving relative to No. 8 and is a cross-sectional view showing an action when the elevating cord 5 is pulled in opposite directions. (A) to (b) are front views of the horizontal blind according to the third embodiment of the present invention, (a) shows a state in which a foreign object is caught on the elevating cord, and (b) shows the elevating cord 5. The state of relative movement with the code equalizer 8 is shown. (A) is a front view showing another release state when a foreign object is caught in the elevating cord 5 on the upper part of the cord equalizer 8 of the third embodiment of the present invention, and (b) is a horizontal blind in the same state. It is a front view which shows. (A) is a front view showing another release state when a foreign object is caught on the elevating cord 5 on the upper part of the cord equalizer 8 of the third embodiment of the present invention, and (b) is a horizontal blind in the same state. (C) is a front view of a horizontal blind showing an action of the elevating cord 5 moving relative to the cord equalizer 8, and (d) is a state in which a foreign object is detached from the elevating cord 5. It is a front view of the horizontal blind shown. (A) is a perspective view of a cord equalizer 8 showing a modification 1 of a third embodiment of the present invention, (b) is a perspective view of another angle, and (c) is a plane in a state where an elevating cord 5 is inserted. (D) is a bottom view, (e) is a cross-sectional view in a state where the elevating cord 5 is inserted, and (f) is a cross-sectional view showing an action when a foreign matter is caught. (A) to (b) are front views of the horizontal blind of the second embodiment of the third embodiment of the present invention, (a) shows a state in which a foreign substance is caught in the elevating cord, and (b) is a state. The state where the cord equalizer 8 is separated from the elevating cord 5 is shown. A modified example 4 of the first embodiment is shown, and FIGS. (A) to (C) are perspective views seen from the upper surface side, the side surface side, and the bottom surface side, respectively. A modified example 4 of the first embodiment is shown, (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 exploded perspective view showing a state in which the engaging member 45 is also removed from the central member 11. It is an exploded perspective view which shows the removed state. (A) is an enlarged perspective view of the area A in FIG. 39 (a), and (b) shows a state in which the engaging member 45 is slightly separated from the central member 11 from the state of (a). .. It is a perspective view for demonstrating the operation of the rounded surfaces 45gu, 45eb of the engaging members 45, 46. A state in which the lifting cords 5R, 5C, 5L and the operation cord 10 are attached to the cord equalizer 8 is shown, (a) is a front view, and (b) is a sectional view. (A) to (c) are cross-sectional views taken along the line AA in FIG. 43 (b), and are explanatory views of a state in which the engaging members 45 and 46 are disengaged from the central member 11. (A) to (c) are sectional views in a state where FIG. 44 (a) is rotated by −90 degrees, and the engaging members 45 and 46 are moved from the central member 11 when a load is applied to the central elevating cord 5C. It is an explanation showing the action of being separated. (A) shows a state in which additional elevating cords 5R1 and 5L1 provided with a box entry prevention member 5b are attached to the cord equalizer 8 from the state of FIG. 43 (a), and FIG. Equalizing cords 5R1 and 5L1 provided with the member 5b are shown. (A) is a front view showing the action of the cord equalizer 8 being tilted by the elevating cord lead-out portion 7 when the elevating cord 5R1 is provided with the box entry prevention member 5b, and (b) is a front view showing the cord equalizer 8 It shows a state in which a hanging box entry prevention member 5b is provided so as to be horizontal.

Hereinafter, embodiments of the present invention will be described. The various features shown in the embodiments shown below can be combined with each other. In addition, the invention is independently established for each feature.

(First Embodiment)
In the horizontal blind as a solar radiation shielding device shown in FIG. 1, a plurality of stages of slats 3 (shielding material, moving member) are suspended and supported via a plurality of ladder cords 4 hanging from a 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 size of the opening in the building.

In the vicinity of the ladder cord 2, a plurality of (three in this embodiment) elevating cords 5 are hung from the head box 1, and the upper ends of these elevating cords 5 are introduced into the head box 1 at each hanging position. , The lower end is connected to the bottom rail 2.

The elevating 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 elevating cord 5 guided to the right side is aggregated and led out from the elevating cord lead-out unit 7 to the outside of the head box 1 via a stopper (not shown) for preventing the bottom rail 2 from dropping its own weight. The stopper can be selected from a state in which the movement of the lifting cord 5 is blocked and a state in which the movement is allowed by operating the lifting cord 5. Therefore, the opening degree of the slat 3 and the bottom rail 2 in the vertical direction can be adjusted between the closed state shown in FIG. 1 (a) and the open state shown in FIG. 1 (c) by operating the elevating cord 5. ..

The elevating cord 5 derived from the elevating cord elevating unit 7 is hung from the head box 1, and their ends are held by the cord equalizer 8. Therefore, a loop structure is formed by the plurality of elevating cords 5 and the cord equalizer 8.

An operation code 10 is connected to the cord equalizer 8, and the operation code 10 is connected to the bottom rail 2. More specifically, the operation code 10 is introduced into the bottom cap 6 attached to one end of the bottom caps 6 provided at both ends in the left-right direction of the bottom rail 2. Since one end of the operation cord is connected to the bottom rail 2 in this way, the end portion 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 part of the operation cord 10 or the lift cord 5 The position of L is maintained at a substantially constant height during ascent and descent.

As shown in FIGS. 2 to 4, the appearance of the cord 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 elevating cord 5 includes a locking portion 5a, and the central member 11 and the engaging members 45, 46 each have an elevating cord insertion hole 11c, 45a, 46a and locking portion pockets 11e, 45b, 46b adjacent thereto. By inserting the elevating cord 5 into the elevating cord insertion holes 11c, 45a, 46a and accommodating the locking portion 5a in the locking portion pockets 11e, 45b, 46b, the elevating cord 5 is provided with the central member 11 and It is engaged with the engaging members 45 and 46. With such a configuration, one elevating cord 5 is held by the central member 11 and the engaging members 45 and 46. Further, the engaging members 45 and 46 are formed with cord accommodating grooves 45d and 46d on the outer surface side, and the elevating cord 5 is inserted into the elevating cord insertion holes 45a and 46a through the grooves. With such a configuration, the distance between the plurality of elevating cords 5 can be shortened, and the elevating cord 5 can be prevented from protruding from the radial outer surface of the cord equalizer 8. Further, the operation code 10 includes a locking portion 10a, and the central member 11 includes an operation cord insertion hole 11d and a locking portion pocket 11f adjacent thereto, and the operation code 10 is inserted into the operation code insertion hole 11d. The operation cord 10 is engaged with the central member 11 by causing the locking portion 10a to be accommodated in the locking portion pocket 11f.

The central member 11 includes a central shaft 11g, an upper locking portion 11a and a lower locking portion 11b provided at intervals along the central shaft 11g. The engaging members 45 and 46 have the same shape and include a base 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 sandwich the central shaft 11g and engage with the central shaft 11g. The height of the pair of arms 45c and 46c is about half that of the central axis 11g. The engaging members 45 and 46 are engaged with the central shaft 11g in a state of being turned upside down. The tip surface 45e of the arm 45c of the engaging member 45 comes into contact with the tip surface 46g of the base 46f of the engaging member 46, and the tip surface 46e of the arm 46c of the engaging member 46 is the tip of the base 45f of the engaging member 45. It comes into contact with the surface 45 g. 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 each other with almost no gap, and the 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 locking portion 11a and the lower locking portion 11b, the engaging members 45 and 46 are aligned with the central shaft 11g. Even if a force in the direction (direction of arrow Y in FIG. 2A) is applied, the engagement between the engaging members 45 and 46 and the central member 11 is not released. Usually, the user grips the code equalizer 8 itself and pulls down the code equalizer 8, or grips the operation code 10 and pulls down the operation code 10 to pull down the lifting cord 5. Regardless of which method is used, a downward load is applied to the cord equalizer 8 in a state where the plurality of elevating cords 5 are substantially parallel to each other, and the engaging members 45 and 46 and the central member 11 No force is applied to separate the engagement between them, and the cord equalizer 8 is not disassembled during user operation. Further, when the cord equalizer 8 is gripped and pulled down, a force is likely to be applied to the upper surface of the cord equalizer 8 (the upper surface of the upper locking portion 11a), so that the cord equalizer 8 is shown in FIG. 4B on this surface. As shown, if the members A, B, and C are divided in the circumferential direction, the members A are unexpectedly separated when, for example, a force is applied only to the members A. On the other hand, according to the present embodiment, since the 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. As described above, the code equalizer 8 of the present embodiment is not unexpectedly divided during operation and is excellent in operability.

On the other hand, for example, as shown in FIG. 5, when a foreign object W is sandwiched between the elevating cord 5 held by the engaging member 45 and the elevating cord 5 held by the central member 11, these elevating cords When a load C is applied to the elevating cord 5 in the direction of expanding the 5, a force is applied to the engaging member 45 in the vertical direction (arrow X direction in FIG. 2A) of the central axis 11g. Due to this force, as shown in FIG. 4A, the distance between the pair of arms 45c is widened, and the engagement between the engaging member 45 and the central member 11 is released. Then, as shown in FIG. 5B, the loop structure formed by the elevating 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 vertical surface on the front side of the bottom cap 6, and are openings leading to 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 code 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 as to be able to hold a plurality of cords, but when holding one operation code 10, only one insertion hole 21 is required.

As shown in FIG. 6B, a release bar 40 is provided in the front-rear direction inside the bottom cap 6. Further, in the vicinity of the insertion hole 21, a fixed sandwiching portion 23 is integrally provided with the bottom cap 6. The release bar 40 is provided with an elongated thin plate-shaped movable sandwiching portion 22 so as to face the fixed sandwiching portion 23. Concavo-convex surfaces are formed on the tips of the fixed pinching portion 23 and the movable pinching portion 22, and the concavo-convex surfaces allow a plurality of operation cords 10 to be collectively sandwiched. Therefore, in the state shown in FIG. 6B, the fixed sandwiching portion 23 and the movable sandwiching portion 22 can hold the end portion of the operation cord 10 so as not to move by a predetermined holding force. Each end of the plurality of operation cords 10 is in a state of being cut and prevented from fraying, the knot ball is not provided with a stopper such as, and each operation code 10 is endless.

A support portion 24 is integrally formed with the bottom cap 6 at the central portion 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 side vertical surface of the bottom cap 6. By pushing the release operation piece 25 in the direction of arrow B in FIG. 6C, the distance between the fixed sandwiching portion 23 and the movable sandwiching portion 22 is expanded to a sufficient distance for inserting the operation code 10. It is possible.

As shown in FIG. 6D, the foreign matter W is caught by the operation code 10 located below the cord equalizer 8 and the load C acts on the operation code 10, and the component force exceeding the predetermined holding force of the operation code 10 by the bottom cap 6 is operated. When the cord 10 is acted on, the end portion of the operation cord 10 comes off 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. 6C to operate the fixed pinching portion 23 and the movable pinching portion 23. 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 engaging 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.
The engaging structure between the engaging members 45 and 46 and the central member 11 may be a different structure. For example, as in the modified example 1 shown in FIG. 7-1, the engaging members 45 and 46 are engaged with the central axis 11g as the center. The arms 45c and 46c may be engaged with the central shaft 11g so that the arms 45c and 46c of the members 45 and 46 overlap each other. Further, at least one of the upper surface and the lower surface 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, engaging convex portions are provided on the upper and lower surfaces of the engaging members 45 and 46, and engaging 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 central 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.
-The plurality of members constituting the cord equalizer 8 are not essential to be integrated by elastic engagement, and may be integrated by, for example, an attractive force due to a magnetic force. Even in that case, safety is ensured by applying a load to the elevating cords 5 in the direction of expanding the plurality of elevating cords 5 to separate the plurality of members, and the state can be easily returned to the operable state.

(Modification 2 of the first embodiment)
A modified example 2 of the first embodiment of the present invention will be described with reference to FIGS. 7-2 to 7-4.
In the above embodiment, the cord accommodating grooves 45d and 46d are provided on the outer surfaces of the engaging members 45 and 46, but in this modified example, the protruding bases 45h and 46h are provided on the inner surface side of the engaging members 45 and 46 to project. Lifting cord insertion holes 45i and 46i are provided in the tables 45h and 46h. The locking portion 5a of the elevating cord 5 is locked at the bottom surfaces of the protrusions 45h and 46h. The central member 11 is provided with a protrusion pocket 11m for avoiding interference with the protrusions 45h and 46h, and cord accommodating grooves 11k and 11l for avoiding interference with the elevating cord 5. According to this modification, in addition to being able to avoid forming a groove on the outer surface of the engaging members 45 and 46, the distance between the plurality of elevating cords 5 can be narrowed, so that the plurality of elevating cords can be narrowed. There is an advantage that foreign matter W is less likely to enter between 5.

(Modification 3 of the first embodiment)
Modification 3 of the first embodiment of the present invention has a configuration similar to that of the first embodiment, has two elevating cords 5, and the elevating cords 5 are connected only to the engaging members 45 and 46. The main difference is that the elevating 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 elevating cord 5 and the cord equalizer 8, the elevating cord 5 is affected by the load. The engaging members 45 and 46 are separated from the central member 11 by being expanded, so that safety is ensured. Note that FIG. 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 depends on how the load C is applied. May come off from the central member 11.

(Modification 4 of the first embodiment)
A modified example 4 of the first embodiment of the present invention will be described with reference to FIGS. 39 to 47. This modified example has a configuration similar to the modified example 2 of the first embodiment, and the differences will be mainly described below. In the following description, the elevating cords are collectively referred to as "elevating cord 5", and individual elevating cords are referred to as "elevating cord 5R", "elevating cord 5R1" and the like.
In the above modification 2, the upper locking portion 11a of the central member 11 is substantially circular, and one elevating cord 5 can be inserted into the cord accommodating grooves 11k and 11l, but in this modification, the upper locking portion 11a can be inserted. 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. A maximum of three lifting cords 5 are inserted into the gaps 11p and 11q, respectively. Two of the maximum six elevating cords 5 inserted through the gaps 11p and 11q are provided in the elevating cord insertion holes 45i and 46i provided in the protrusions 45h and 46h, as in the modified example 2. It is inserted and locked. The remaining four elevating cords 5 are housed and locked in slits 11t and 11v provided in the protrusions 11s and 11u protruding from the central wall 11r of the central member 11 toward the engaging members 45 and 46. Slit. Further, the elevating cord insertion hole 11c of the central member 11 penetrates the central wall 11r and continues to the pocket 11o, and the elevating cord 5 inserted through the elevating cord insertion hole 11c is locked on the upper surface of the pocket 11o. To. As shown in FIG. 43B, each elevating cord 5 is locked by providing a locking portion 5a such as a ball stopper at its tip.

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 the protruding base 11s of the central member 11 in a plan view. The elevating cord 5 is held in the space P surrounded by the side wall of the slit 11t and the protrusion 45h. Since the space P is surrounded by the side wall of the slit 11t and the projecting base 45h, the elevating cord 5 in the space P does not easily separate in the normal state. On the other hand, when a foreign object is caught in the elevating cord 5 in the space P and a load in the direction of arrow X in FIG. 41 is applied, the elevating cord 5 pushes the protrusion 45h to engage as shown in FIG. 41 (b). It is safe because the member 45 is separated from the central member 11 and a gap Q is formed between the protrusion base 45h and the protrusion base 11s, and the elevating cord 5 in the space P separates through the gap Q and separates from the cord equalizer 8. Is secured. The elevating 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 the extent that a gap Q through which the elevating cord 5 can pass is formed. Therefore, when the elevating cord 5 in the space P is separated from the cord 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 its original state due to its elastic force after the engaging member 45 is disengaged from the central member 11 to form a gap Q and the elevating cord 5 is disengaged.
It should be noted that tapered surfaces 45j are provided at both ends of the projecting base 45h in the width direction, and the tapered surfaces 45j are inserted into the slit 11t, so that the size is sufficient for the lifting cord 5 to be detached when a load is applied. The gap Q is easily formed. The protruding base 46h of the engaging member 46 and the protruding base 11u of the central member 11 have the same configuration, and tapered surfaces 46j are provided at both ends of the protruding base 46h in the width direction. 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, a rounded surface is formed at the corners of the facing surfaces of the engaging members 45 and 46. Specifically, the engaging member 45 is formed with rounded surfaces 45gu, 45gb, 45eu, 45eb in order from the upper side, and the engaging member 46 is formed with rounded surfaces 46eu, 46eb, 46gu, 46gb in order from the upper side. ing. The rounded surfaces 45 gb, 45 eu, 45 eb, 46 eb, 46 gu, 46 gb facilitate relative rotation between the engaging members 45, 46 and allow the engaging members 45, 46 to smoothly disengage from the central member 11. ing. On the other hand, as shown in FIG. 42, the rounded surfaces 45gu and 46eu are formed when the cord equalizer 8 is tilted when a load in the arrow X direction is applied to the elevating cord 5R1 which is inserted through the gap 11p and locked in the slit 11t. , The elevating cord 5R locked to the engaging member 45 is guided to the boundary surface B of the engaging members 45 and 46, and is provided to exert a separating force between the engaging members 45 and 46. That is, the rounded surfaces 45gu and 46eu function as an elevating cord guide surface that guides the elevating cord 5R to the boundary surface B, and the shape may be, for example, a flat tapered surface. In some cases, a load is applied to the elevating cord 5C formed on the central member 11 to guide the elevating cord 5R to the boundary surface B. Further, a load may be applied to the elevating cord 5R to guide the elevating cord 5R1 to the boundary surface B. Here, the elevating cord 5 held on the engaging member 45 side has been described, but the same applies to the elevating 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 code 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 elevating cords 5C and 5R and a load is applied to the elevating cord 5R, a force in the direction of arrow X1 in FIG. 44A is applied to the engaging member 45, and FIG. As shown in b), the engaging member 45 snap-fixed to the central member 11 is disengaged. On the other hand, when a foreign object is caught in the space L between the elevating cords 5C and 5L and a load is applied to the elevating cord 5L, a force in the direction of arrow X2 in FIG. 44A is applied to the engaging member 46, and FIG. As shown in 44 (c), the engaging member 46 snap-fixed to the central member 11 is disengaged.

Further, when a foreign object is caught in the space between the elevating cord 5C and the other elevating cords 5R and 5L, the direction perpendicular to the paper surface of FIG. 43 (a) with respect to the elevating cord 5C (direction of 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 disengage from the central member 11 when a load is applied in this direction. .. However, since the surface of the central member 11 in contact with the engaging members 45 and 46 is arcuate, as shown in FIGS. 45 (a) to 45 (c), the arrows added to the central member 11 The force in the X3 direction is converted into the 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 the force in the arrow XL direction in the region C2 to the engaging member 46. It is transmitted and the engaging member 45 is disengaged.

FIG. 46A shows a state in which the additional elevating cord 5R1 is locked in the slit 11t and the additional elevating cord 5L1 is locked in the slit 11v. Since the elevating cords 5C, 5R, 5L are locked to the central member 11 or the engaging member 45, 46 even when the engaging members 45, 46 are separated from the central member 11, the central member 11 or the engaging member 45 , 46 does not come into contact with the elevating cord lead-out unit 7 shown in FIGS. 1 and 47, so that the tips of the elevating cords 5C, 5R, and 5L are not pulled into the head box 1. On the other hand, since the elevating cords 5R1, 5L1 are not fixed to any of the members when the engaging members 45 and 46 are separated from the central member 11, the tip of the elevating cords 5R1, 5L1 is pulled into the head box 1. In this case, it takes time and effort to lock the elevating cords 5R1 and 5L1 to the cord equalizer 8 again. Therefore, in this modification, the in-box entry prevention member 5b is attached to the elevating cords 5L1 and 5R1 locked in the slits 11t and 11v. As shown in 46 (b), the in-box entry prevention member 5b is a spherical body having a through hole 5b1 and can be locked by the elevating cord lead-out unit 7, and the elevating cords 5L1 and 5R1 have through holes. It is inserted through 5b1. The in-box entry prevention member 5b is relatively movable along the elevating cord 5L1, 5R1, and when the elevating cord 5L1, 5R1 is attached to the cord equalizer 8, as shown in FIG. 46 (a). The cord equalizer 8 is locked on the upper surface, and when the elevating cords 5L1 and 5R1 are detached from the cord equalizer 8, they are locked by the locking portion 5a as shown in FIG. 46B.

By the way, there is a type of solar shading device such as a pleated screen in which the lower limit position of the bottom rail 2 is determined by locking the cord equalizer 8 to the elevating cord lead-out unit 7. When the number of elevating cords 5 of such a solar shading device is four, elevating cords 5C, 5R, 5L, 5R1 are provided, and the elevating cord 5R1 is provided with a box entry prevention member 5b. In this state, when the bottom rail 2 is lowered to the lower limit position, as shown in FIG. 47 (a), the box entry prevention member 5b abuts on 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 of the cord equalizer 8, the upper surface of the cord equalizer 8 comes into contact with the elevating cord lead-out portion 7, so that the cord equalizer 8 is tilted, which impairs the aesthetic appearance. Further, the bottom rail 2 is also inclined due to this inclination. In FIG. 47 (a), the elevating cord 5R is not shown.

In order to prevent such a problem, the elevating cord 5L on the opposite side of the elevating cord 5C from the elevating cord 5R1 provided with the in-box entry prevention member 5b, and / or the elevating cord 5C in the center is also inside the box. An intrusion prevention member 5b may be provided. As a result, as shown in FIG. 47 (b), the inclination of the cord equalizer 8 can be suppressed even when the bottom rail 2 is lowered to the lower limit position.

This modification can be carried out in the following aspects.
-The cord equalizer of this modified example is configured to be able to hold up to seven elevating cords, but may be configured to be able to hold eight or more elevating cords. Examples of the method of increasing the number of elevating cords that can be held include increasing the number of slits for accommodating the elevating cords and increasing the number of elevating 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 appearance of the cord equalizer 8 has a substantially cylindrical shape, and the cord equalizer 8 includes a first case 69, a second case 70, a slide member 71, and a cord holding member 72 in appearance. The first case 69 and the second case 70 have a structure in which the cases are fixed so as to be integrated with each other by fitting by snapping or the like or screwing by screwing or the like. The upper part of the first case 69 is hollowed out in a circular shape, and the slide member 71 and the cord holding member 72 are arranged so as to project upward from the hollowed out portion. The cord holding member 72 is provided with cord guide portions 73 (six locations in the figure), and is formed so that the elevating cord 5 is inserted along the cord guide portion 73. Further, a slit-shaped operation cord insertion hole 74 is provided on the bottom surface of the second case 70, and the operation code 10 is inserted into the operation code insertion hole 74.

Next, each configuration of the code equalizer will be described with reference to FIGS. 11 to 16.

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 portion 75 inside, and a slide member 71 and a spring, which will be described later. It houses 77. Further, a flange locking portion 83 projecting in the opening inner diameter direction is provided on the upper side surface side of the first case 69. Further, the lower side surface is provided with a portion that is fitted with the second case 70 by a snap or the like, or is screwed by screwing.

The second case 70 has a substantially cylindrical shape, the upper portion thereof is opened in a circular shape, and the lower portion has a bottom surface. Inside the second case 70, there is 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 the upper surface in contact with the first space portion. It is configured as 79. The upper portion of the second space portion 76 is opened by an opening, and the bottom surface corresponding to the lower portion 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 cord insertion hole 74. There is. The operation code 10 is provided with a knot, caulking, etc. at the end of the operation code 10 protruding into the second space 76 from the lower surface side of the bottom surface so that the second case 70 and the operation code 10 can be connected. It is configured to be fixed. Further, on the upper opening side of the second space portion 76 of the second case 70, an engaging shaft 84 is arranged so as to cross over the diameter of the opening, and its cross section has a substantially quadrangular shape.

As shown in FIGS. 11 and 14 to 15, the slide member 71 has a substantially cylindrical shape, and protrudes from the inside of the first space 75 of the first case 69 toward the upper opening side of the first case 69. The slide member 71 is arranged. The slide member 71 has a circular opening on both the upper side and the lower side, and has a third space portion 80 inside the slide member 71, and accommodates a cord holding member 72 described later. A flange 81 projecting outward in the outer surface is formed in an annular shape on the circumference of the side surface at substantially the center of the slide member 71 in the vertical direction of the outer surface, and the protruding surface of the flange 81 is the protruding surface of the first case 69. It is slidably in contact with the inner surface on the 75th side of the first space 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 to prevent it from coming off from the opening of the first case. Further, a slide shaft 78 having a cylindrical cross section is formed in the lower opening portion of the slide member 71 so as to cross over the diameter of the opening, and is in the same linear direction as the above-mentioned engaging shaft 84. It is arranged in a shape. Further, the upper end portion of the upper side surface of the slide member 71 has a cord load detecting portion 82 having a radius applied from the side of the second space portion 76 surface toward the outside of the opening. In addition, the outer diameter of the side surface of the slide member 71 is formed so 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 of the flange 81 as a boundary. With this configuration, it is possible to arrange the side surface of the slide member 71 located on the lower side so as to enter the inner diameter portion of the spring 77, which will be described later. The vertical length of the slide member 71 protruding from the first case 69 and the vertical length of the space portion from the lower surface of the slide member 71 to the spring locking portion 79 in the first space portion 75 are It is configured to have approximately the same length.

As shown in FIG. 11, a spring 77 serving as an urging member is arranged in the first space portion 75. In the inner diameter portion of the spring 77, the side surface located on the lower side of the slide member 71 penetrates substantially to the center in the vertical direction of the spring 77, and further, the cord holding member 72 described later enters the inner side of the spring 77 in the vertical direction. Have 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 thereof is arranged so as to be locked to the lower surface of the flange 81 of the slide member 71. By arranging 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. The arrangement is such that The urging force of the spring 77 may be such 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 cylindrical portion 85 having a cylindrical shape and a pair of elastic arms 86 below the cylindrical portion 85 so as to project from the bottom surface of the cylindrical portion 85. The diameter of the columnar portion 85 is set so as to be slidably in contact with the inner surface of the slide member 71 on the third space portion 80 side in the vertical direction. Further, the upper surface of the cylindrical portion 85 is arranged so as to be on the same surface as the upper side surface (cord weight detection portion 82) of the slide member 71, and the lower surface thereof is positioned so as to fit in the third space portion 80. In the drawing, a cord guide portion 73 having six vertical grooves formed therein is provided, and the end portion of the elevating cord 5 is inserted from the upper side of the cord guide portion 73 to elevate and elevate from the lower portion of the cord guide portion 73. The cord 5 is projected to form a knot, caulking, or the like. Since the slide member 71 is arranged on the outer edge side where the cord guide portion 73 is not regulated, the circumference of the elevating cord 5 is regulated by the cord guide portion 73 and the slide member 71, and as a result, the cord holding member 72 and the elevating cord 5 are regulated. Is configured to be fixed. In the present embodiment, since the cord guide portions 73 are formed at six locations, a maximum of six elevating cords can be inserted into the respective cord guide portions 73.

As described above, as shown in FIG. 17, the cord holding member 72 holds a plurality of elevating cords 5 in a state where the cord holding member 72 is engaged with the second case 70 to form a loop structure. As shown in FIG. 20, when the cord holding member 72 and the second case 70 are disengaged, the elevating cord 5 is separated from the cord holding member 72 and the loop structure is released. .. In the state where the cord holding member 72 and the second case 70 are disengaged, all the elevating cords 5 may be separated from the cord holding member 72, but in that case, the cord holding member 72 Since it is easy to lose the cord, it is preferable that one of the plurality of elevating 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 cord guide portions 73 is provided with a cord fixing portion 89 that holds the elevating cord 5 even when not engaged.

The pair of elastic arms 86 of the cord holding member 72 have 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 portion 75 to the third space portion 80. Each of the pair of elastic arms 86 has a locking portion 87 tapered at the tip portion 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 so as to be integrated by engaging the engaging shaft 84 of the second case 70 from the left and right by the locking portion 87. Further, the elastic arm 86 is arranged slightly below the center of the elastic arm 86 in the vertical direction and on the inner side surface of the elastic arm 86, and includes a convex portion 88 projecting in the central direction and having a taper. A slide shaft 78 is arranged between the pair of elastic arms 86 in the space between the convex portion 88 and the base of the elastic arms 86.

Next, the operation of the code equalizer will be described with reference to FIGS. 17 to 20. In this embodiment, two lifting cords 5 are used as an example, but three or more cords may be used. Further, both of the two elevating cords 5 are attached to the cord guide portion 73 having no cord fixing portion 89. Further, in each figure, the operation code 10 is not shown.

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

Next, FIG. 18 is a diagram showing 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 elevating cords 5 for some reason. When this abnormality occurs, foreign matter or the like (not shown) is present between the elevating cords 5 and above the cord equalizer 8. In such a state, due to the presence of foreign matter or the like between the elevating cords 5, the elevating 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, and this force is applied. Is transmitted to the cord equalizer 8 connected to the end of the elevating cord 5.

At this time, the elevating cord 5 abuts on the cord load detecting portion 82 of the slide member 71, and a force that pulls the cord holding member 72 in the direction of arrow A in the drawing acts on the abutting portion as a fulcrum. Since it is firmly connected and held by the cord holding member 72, it does not come off from the cord equalizer 8, and the cord holding member 72 also comes off from the cord equalizer 8 by engaging the locking portion 87 and the engaging shaft 84. There is no.

In such a connected / engaged state, the cord weighted detection unit 82 with which the elevating cord 5 is in contact serves as a fulcrum, and as shown in FIGS. 18 to 19, the slide is pushed upward by the urging force of the spring 77. The member 71 is pushed in the direction inside the first space portion 75, which is the direction of the arrow B in the figure, contrary to the urging force.

When the elevating cord 5 pushes the slide member 71 toward the inside of the first space 75, the slide shaft 78 provided in the slide member 71 also moves in the same direction at the same time. By this movement, the slide shaft 78 comes into contact with the tapered convex portion 88 provided on the elastic arm 86 of the cord holding member 72. Due to this contact, the elastic arm 86 expands so as to be pushed in the left-right direction (arrow C direction). Due to the expansion of the elastic arm 86 in the left-right direction, the locking 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 disengaged.

When the locking portion 87 is disengaged from the engaging shaft 84, the cord holding member 72 and the second case 70 are separated from each other. As shown in FIGS. 19 to 20, the separated cord holding member 72 is subjected to a force in the upward direction (arrow D direction in FIG. 19) of the first case 69 by the elevating cord 5. 72 comes off from the first case 69 and the second case 70. Further, since only the cord holding member 72 is detached, the elevating cord 5 is detached from the cord holding member 72 because there is no slide member 71 that regulates the elevating cord 5 from being detached on the outer edge side of the cord guide portion 73.

Usually, the user grips the code equalizer 8 itself and pulls down the code equalizer 8, or grips the operation code 10 and pulls down the operation code 10 to pull down the lifting cord 5. Regardless of which method is used, a downward load is applied to the cord equalizer 8 in a state where the plurality of elevating cords 5 are substantially parallel to each other, and a downward load is applied between the cord holding member 72 and the second case 70. No force is applied to disengage the cord, 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 likely to be applied to the upper surface of the cord equalizer 8, so that the cord equalizer 8 has a plurality of members A and B in the circumferential direction as shown in FIG. 4 (b). , 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 the plurality of members constituting the cord equalizer 8 are concentrically divided on the upper surface of the cord equalizer 8 and not divided in the circumferential direction, such an unexpected division occurs. Absent. Further, when the user puts a finger on the upper surface of the cord equalizer 8 and pushes both the cord holding member 72 and the slide member 71 in the direction of the arrow B in FIG. 18, the slide shaft 78 and the convex portion 88 in FIG. 18 come together. It will be lowered, and the engagement between the cord holding member 72 and the second case 70 will not be released. When the user hooks a finger on the slide member 71 around the cord holding member 72 and pushes only the slide member 71 by a predetermined amount in the direction of arrow B in FIG. 18, the cord holding member 72 and the second case 70 are combined. The engagement may be disengaged, but in such an unnatural operation, the slide member opposes the urging force of the spring 77 to the extent that the cord holding member 72 and the second case 70 are disengaged. Since it is not easy to push the 71 in, after all, during normal operation, the cord holding member 72 does not substantially occur to be separated from the second case 70. As described above, the code equalizer 8 of the present embodiment is not unexpectedly divided during operation and is excellent in operability.

This embodiment can also be implemented in the following embodiments.
-Although the cord weight detection unit has a structure in which a radius is applied, it may be configured by a member capable of guiding, such as a roller, instead of the radius.
-A cord guide portion may be formed at 6 or more locations on the cord holding member so that 6 or more elevating cords can be connected to the cord equalizer.

(Modification 1 of the second embodiment)
The first modification 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 arranged between the pair of elastic arms 86 and engages with the pair of elastic arms 86 by increasing the distance between the pair of elastic arms 86 by sliding the slide shaft 78. Although the engagement with the shaft 84 was released, in this modified example, the slide shaft 78 is arranged 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 arranged adjacent to the outside of the pair of elastic arms 86, the spread of the pair of elastic arms 86 is suppressed. Therefore, the holding force of the engagement between the pair of elastic arms 86 and the engaging shaft 84 is large. On the other hand, when a load is applied to the elevating cord 5 in the direction in which the plurality of elevating 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 the arrow X in FIG. It moves and the suppression of the spread 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 when the load applied to the elevating cord 5 exceeds the threshold value, the cord holding member 72 is separated from the second case 70. ..

(Modification 2 of the second embodiment)
Modification 2 of the second embodiment of the present invention has a configuration similar to that of modification 1 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 proceed focusing on the differences with reference to FIGS. 22 to 30. In each perspective view, the spring 77 is not shown as appropriate.

As shown in FIGS. 22 to 23, the second case 70 includes an inclined engaging portion 91a 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 its tip, and the cord holding member 72 engages with the second case 70 when the upper surface of the locking portion 87 abuts on the tapered surface 91a. ing. Further, an inclined slide portion 92 of the slide member 71 is provided on the side opposite to the tapered surface 91a with the elastic arm 86 interposed therebetween. The inclined slide portion 92 is provided with a tapered surface 92a that inclines upward toward the elastic arm 86. The inclined slide portion 92 has the same function as the slide shaft 78 of the first modification of the second embodiment, and as shown in FIG. 22, the tip of the inclined slide portion 92 is the back surface (locking) of the elastic arm 86. In the state adjacent to the portion 87), the elastic deformation of the elastic arm 86 is suppressed, so that the cord is held even if a strong upward force is applied to the cord holding member 72. The engagement between the member 72 and the second case 70 is not disengaged. On the other hand, when a load is applied to the elevating cord 5 in the direction in which the plurality of elevating 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 the position indicated by the dotted line 92a is reached, the suppression of 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 when the load applied to the elevating cord 5 exceeds the threshold value, the cord holding member 72 is separated from the second case 70.

The mechanism by which the cord holding member 72 holds the elevating cord 5 is similar to that of the second embodiment, but in the present embodiment, as shown in FIG. 24, one of the plurality of cord guide portions 73 is a cord fixing portion. 89 is provided, and the other one is provided with a cord temporary fixing portion 73a. In the present embodiment, the cord temporary fixing portion 73a 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 cord temporary fixing portion 73a is for improving the assembleability by temporarily fixing the elevating cord 5 to the cord guide portion 73 at the time of assembling the cord equalizer 8, and holds the elevating cord 5 weakly. Therefore, when a load is applied to the elevating cord 5 in the direction in which the plurality of elevating cords 5 are expanded and the cord holding member 72 is separated from the second case 70, the elevating cord 5 is moved up and down by the load applied to the elevating cord 5 at that time. The cord 5 is detached from the cord guide portion 73 against the holding force of the cord temporary fixing portion 73a.

As shown in FIG. 24, in the cord holding member 72, a partition wall 93 substantially perpendicular to the sliding direction of the slide member 71 is provided between the cord holding portion 72a provided with the cord guide portion 73 and the elastic arm 86, and the partition wall 93 is provided. A rib 94 is erected on the elastic arm 86 side. The outer peripheral shape of the partition wall 93 substantially matches the inner peripheral shape of the slide member 71, and as shown in FIG. 23, there is almost no gap between the partition wall 93 and the slide member 71. As shown in FIG. 23B, the rib 94 is the upper part of the second case 70 when the cord holding member 72 is further pushed in than in the state where the elastic arm 86 is engaged with the tapered surface 91a. It has a function of abutting on the contact surface 70a and preventing further pushing. When 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, there is a gap between the pedestal 93 and the slide member 71, and the elevating cord 5 or the lifting cord 5 is formed in the gap. There is a risk that the locking portion 5a at the tip thereof will be pinched and cause a malfunction. Therefore, in this modification, the rib 94 is provided to prevent such a malfunction.

Further, 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, the marks 71a and 72b are provided, respectively. By using these marks 71a and 72b, the alignment in the rotation direction can be easily performed.

Next, the engagement structure between the first case 69 and the second case 70 will be described with reference to FIG. 27. The first case 69 includes an inclined portion 69a and an engaging recess 69b that follows the inclined portion 69a on the inner circumference 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 portion 70b is provided between the holding portion 96 and the contact surface 70c. When the first case 69 is rotated in the direction of the arrow R with the contact surface 69c and the contact surface 70c in close proximity or in contact with each other, the inclined portion 69a is guided in the direction of the engaging convex portion 70b by the tapered surface 96a, and at the same time. The engaging convex portion 70b is guided into the engaging concave portion 69 along the slope of the inclined portion 69a, the engaging convex portion 70b and the engaging concave portion 69b are engaged, and the first case 69 becomes the second case 70. On the other hand, relative rotation becomes impossible. Further, in this state, since the inclined portion 69a is sandwiched between the holding portion 96 and the contact surface 70c, 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 made 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 risk, in the present 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 evenly engaged in the circumferential direction at two locations (at intervals of 180 degrees), but the number and positions of the engagement locations are particularly limited. Not done. Further, the unevenness formed in the first and second cases 69 and 70 may be reversed.

Next, the work of replacing the conventional code equalizer having no safety function with the code equalizer 8 of the present modification will be described with reference to FIGS. 28 to 29.
As a premise of 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, and the user can use the operation code on the above parts. 10 is attached, and the cord holding member 72 is attached (including the attachment of the elevating cord 5 to the cord holding member 72).

As shown in FIG. 28, the operation code 10 is inserted in a state where the code 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 code 10 is continuously inserted as it is, and is inserted into the gap G between the inclined engaging portion 91 and the inclined sliding portion 92. The inclined engaging portion 91 and the inclined sliding 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 code 10 is pulled out to the opening side of the upper surface of the part to make a knot ball (locking portion 10a). Next, the operation cord 10 is pulled back to position the knot ball at the upper surface position of the operation cord insertion hole 74. As shown in FIGS. 28 to 29, the inclined engaging portion 91 also has a tapered surface 91b on the opening side of the upper surface of the part, whereby the knot ball can be tied to the inclined engaging portion 91 and the inclined sliding portion 92. When moving to the lower side, the knot ball is guided to the gap G.

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

The cord equalizer 8 used in the present embodiment is formed in a substantially columnar shape as shown in FIG. 31 (a), an insertion groove 51 is formed in the upper portion in the vertical direction, and the elevating cord 5 is moved downward from the insertion groove 51. It can be inserted. 31 (b) and 31 (d) show a state in which three elevating cords 5 are inserted. The code equalizer 8 is composed of two members, an equalizer main body 50 shown in FIGS. 32 (a) and 32 (b) and a cover 53 (leaf spring) shown in FIG. 32 (c), and is preferably formed of a synthetic resin. ..

The equalizer body 50 has a substantially conical trapezoidal upper insertion portion 66 at the upper portion and a substantially conical trapezoidal lower insertion portion 67 at the lower portion, and a circle having a diameter smaller than the diameter of the inner peripheral surface 63 of the cover 53 at the intermediate portion in the vertical direction. The columnar connecting portion 57 is formed in the vertical direction, and the upper holding portion 66 and the lower insertion portion 67 are integrally formed. As shown in FIG. 32 (b), a plate-shaped connecting wall 68 is vertically formed in the connecting 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 by a connecting wall 68 at two points. As shown in FIG. 31D, three elevating cords 5 can be inserted into one second passage hole 14.

As shown in FIG. 32 (a), six insertion grooves 51 are formed radially toward the outer periphery in the upper insertion portion 66 of the equalizer main body 50. The width of each insertion groove 51 is slightly wider than the diameter of the elevating cord 5, and as shown in FIG. 31D, the elevating cord 5 can be inserted (up to 6 in this example). When the number of lifting 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 tip end side of the insertion groove 51.

As shown in FIG. 32 (c), the cover 53 is a tubular leaf spring having an opening / closing 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. A tapered surface 54 is formed on the upper insertion portion 66 of the equalizer main body 50 with an inclination corresponding to the taper 59 of the cover 53, and the lower insertion portion 67 of the equalizer main body 50 has an inclination corresponding to the taper 61 of the cover 53. , The tapered surface 56 is formed. Therefore, the cover 53 can be easily assembled without any vertical movement. As shown in FIG. 32 (a), an inner peripheral contact portion 62 erected in a cylindrical shape is formed on the upper portion of the lower insertion portion 67, and the peripheral surface of the inner peripheral contact portion 62 is the inner circumference of the cover 53. The diameter corresponds to the surface 63. Further, as shown in FIG. 32 (a), one of the connection walls 68 is formed as a detent 52 so as to be connected to the outer periphery of the equalizer main body 50, and the opening / closing end 58 of the detent 52 is formed with the cover 53 assembled. The cover 53 abuts from both sides so that the cover 53 does not rotate relative to the equalizer body 50. Since the insertion groove 51 and the opening / closing end 58 are not rotated relative to each other in the assembled state, the elevating cord 5 is not located between the opening / closing ends 58, and the elevating cord 5 carelessly moves to the opening / closing end 58. It is prevented from slipping through between.

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. 32 (d) and fitted so as to get over the inner peripheral contact portion 62. Then, since the cover 53 is a leaf spring and has tapers 59 and 61 at the top and bottom, it is invited by the equalizer main body portion having the corresponding shape and fits snugly. When the opening / closing end 58 overlaps the detent 52, the cover 53 can be slightly rotated to bring it into a normal assembled state.

As shown in FIG. 33 (a), 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 knot ball (knot ball) is formed in the internal space 15. (Protrusions, locking portion) 60 can be accommodated. Each knot ball 60 is larger than the width of each insertion groove 51 and larger than the radial width of each second passage hole 14. In the assembled state, the first passage hole 13 is formed between the inner peripheral surface 63 and each insertion groove 51. As shown in FIG. 31 (c), the first passage hole 13 to the second passage hole 14 are communicated with each other, and the elevating cord 5 can be vertically inserted 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 elevating cord 5 to adjust the shielding state. Further, even if the elevating cord 5 below the cord equalizer 8 is pulled, the knot ball 60 does not come out from the second passage hole 14 and the pulling operation is possible. As shown in FIG. 33 (a), when the cord equalizer 8 is pulled in the longitudinal direction of the elevating cord 5 and a force acting in the direction of arrow A acts, an upward tension is generated in the elevating cord 5 through the lower surface 55. Although pressure is applied to the knot ball 60, since the lower surface 55 is a horizontal plane, the knot ball 60 does not move and the elevating cord 5 can be pulled down. The lower surface 55 may be configured to function as a locking portion holding surface for holding the knot ball 60, and may be a tapered surface extending inward in the radial direction of the equalizer main body 50 in addition to the horizontal surface. .. When a downward load is applied to the cord equalizer 8 with the plurality of elevating cords 5 substantially parallel to each other in this way, the knot ball 60 is held by the holding structure of the cord equalizer 8 and the elevating cord 5 can be pulled down. It becomes. As described above, the cord equalizer 8 of the present embodiment may perform the lowering operation of the elevating cord 5 by grasping the cord equalizer 8 itself and lowering the cord equalizer 8, and the elevating cord 5 may be lowered below the cord equalizer 8. The lifting cord 5 may be pulled down by pulling down the portion of. Regardless of which method is used, a downward load is applied to the cord equalizer 8 in a state where the plurality of elevating cords 5 are substantially parallel to each other, and the user does not apply the force to separate the knot ball 60. The knot ball 60 does not come off during the operation of. Further, when the cord equalizer 8 is gripped and pulled down, a force is likely to be applied to the upper surface of the cord equalizer 8, so that the cord equalizer 8 has a plurality of members A and B in the circumferential direction as shown in FIG. 4 (b). , 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 the 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. As described above, the code equalizer 8 of the present embodiment is not unexpectedly divided during operation and is excellent in operability.

When a predetermined load C is applied by the foreign matter W in the state shown in FIG. 34 (a), as shown in FIG. 33 (b), the plurality of elevating cords 5 expand each other (described by two here). A pulling force acts on the opening directions C3a and C3b. The elevating cord 5 protrudes from each insertion groove 51, and the taper 59 on the upper part of the cover 53 is expanded against elasticity by the component forces in the directions of arrows E1 and E2 accompanying the tension generated in the elevating cord 5. Further, the two knot balls 60 also move in a direction away from each other (diameter outward direction) along the horizontal plane. The knot ball 60 reaches the tapered surface 54, pushes the inner peripheral surface 63 open, and separates from the internal space 15 as shown in FIG. 33 (c). Even after the detachment, the state in which the elevating cord 5 is inserted into the second passage hole 14 is maintained. In this way, the chord equalizer 8 and the elevating cord 5 can be moved relative to each other, and the chord equalizer 8 can be moved in the direction of the arrow F shown in FIG. 33 (c). Then, the code equalizer 8 moves downward along the elevating cord 5 to the position shown in FIG. 34 (b). If further tension is applied from this state, the elevating cord 5 will come off from the bottom cap 6, but the action is the same as in the first embodiment. In this way, when a load is applied to the elevating cord 5 in the direction of expanding the plurality of elevating cords 5 to each other, the holding of the knot ball 60 by the holding structure of the cord equalizer 8 is released, and the cord equalizer 8 moves to the elevating cord 5. It becomes possible to move relative to each other, and the length of the loop structure formed by the elevating cord 5 and the cord equalizer 8 is increased to ensure safety.

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

It should be noted that the cover 53 is E1 even when predetermined tensions in the opposite directions C4a and C4b act on the elevating cord 5 as shown in FIG. 33 (d) instead of the oblique angle as shown in FIG. 33 (b). Elastically spread in the direction of E2, the knot ball 60 separates from the internal space 15.

Further, depending on the balance of the load, not all the knot balls may be separated at the same time. A downward force C acts unevenly on the elevating cord 5, and as shown in FIG. 35 (a), for example, the knot ball 60 of one elevating cord 5a is detached and the elevating cord 5b is not detached. The load C of the foreign matter W may act on it. In such a case, as shown in FIG. 35 (b), the elevating cord 5b is pulled out from the head box 1, so that the bottom rail 2 and the slat (shielding material) 3 are lifted by a certain amount while being inclined. Then, as the inclination of the bottom rail 2 increases, the tension applied to the elevating cord 5b increases, and when this tension reaches a predetermined value, the knot ball 60 of the elevating cord 5b expands the cover 53 and separates from the internal space 15. , The state as shown in FIG. 34 (b) is obtained.

Further, the downward force C acts unevenly on the elevating cord 5, and as shown in FIG. 36A, the knot ball 60 of one elevating cord 5b is detached and detached as shown in FIG. 36B. The load C of the foreign matter W may act on the lifting cord 5b on the side, but even in such a case, the safety is ensured by the following actions. While the cord equalizer 8 is located at the position of the knot ball 60 of the elevating cord 5a that has not been disengaged, the elevating cord 5b and the cord equalizer 8 on the detached side move relative to each other, and as shown in FIG. 36C, The portion of the elevating cord 5b below the cord equalizer 8 is pulled up to the upper side of the cord equalizer 8, and the length of the portion of the elevating cord 5b between the cord equalizer 8 and the bottom cap 6 is shortened. Then, as the position of the foreign matter W is lowered, the tension applied to the elevating cord 5b increases. Then, when this tension reaches a predetermined value, the end portion of the elevating cord 5b comes off from the bottom cap 6 as shown in FIG. 36D, and the foreign matter W is in a no-load state. In order to return from the state shown in FIG. 36 (d) to the operable state, the elevating cord 5 is inserted into the first passing hole 13 of the cord equalizer 8 and pulled out from the second passing hole 14. The knot ball 60 may be introduced into the internal space 15 along the taper 59 while relatively moving to the position of the knot ball 60 along the elevating cord 5 and slightly expanding the cover 53. The return work may be performed easily.

(Modification 1 of the sixth embodiment)
In the sixth embodiment, the cover (leaf spring) 53 is provided so that the knot ball (projection) 60 does not move in the outer peripheral direction of the cord equalizer 8, but in this modification, the equalizer main body is used as a holding means other than the cover 53. It was configured to hold a snap. As shown in FIG. 37, a portion narrower than the diameter of the elevating cord is provided in the outer peripheral direction from the first passing hole 13 through which the elevating cord 5 is inserted to form a snap. Specifically, a narrow space between the ridges 65 and 65 provided in the insertion groove 51 shown in FIG. 37 (c) is provided. With such a configuration, as shown in FIG. 37 (e), when the cord equalizer 8 is pulled, the elevating cord 5 and the cord equalizer 8 are provided without the user pressing with a finger or the like, as in the sixth embodiment. Is sufficiently retained. Further, as shown in FIG. 37 (f), when a pulling force acts on the expanding directions C3a and C3b of the plurality of elevating cords 5, the elevating cord 5 comes out from between the ridges 65 and 65 of the insertion groove 51. , The knot ball 60 is separated, and the cord equalizer 8 and the elevating cord 5 can be moved relative to each other.

(Modification 2 of the sixth embodiment)
The cord equalizer 8 of this modification is the same as that of the sixth embodiment and the modification 1 thereof in terms of the holding structure of the knot ball 60, and a load is applied to the elevating cord 5 in the direction of expanding the plurality of elevating cords 5. The action of sometimes detaching the knot ball 60 is also the same. On the other hand, in this modification, as shown in FIG. 38, the knot ball (locking portion) 60 is provided at the end of the elevating cord 5, and the operation cord 10 is connected to the lower side of the cord equalizer 8. ing. Then, the operation cord 10 is connected to the bottom cap 6 instead of the elevating cord 5.

In this modification, as shown in FIG. 38 (a), when a load C is applied to the elevating cord 5 in the direction of expanding the plurality of elevating cords 5, the cord equalizer 8 is shown in FIG. 38 (b). Is separated from the elevating cord 5 and falls to ensure safety. In order to return from the state shown in FIG. 38 (b) to the operable state, the same method as in the sixth embodiment and the first modification can be adopted.

(Other embodiments)
The present invention can also be implemented in the following embodiments.
-The number of lifting cords may be two or more, and may be three or more.
-The cord connected to the cord equalizer and hung from above may be a cord other than the elevating cord, for example, a tilt cord or the like.
-It can also be applied to pleated screens and roman shades that have an operation code hanging from the head box and have a cord equalizer, and can be used for vertical blinds that have an operation code hanging from a hanger rail and have a code equalizer. Is also applicable.
-The cord equalizer may be used as a stopper for stopping the lower limit by bringing the upper surface of the cord equalizer into contact with the cord lead-out portion of the head box so that the cord equalizer can be stopped at the lower limit position of the solar radiation shielding material.
-In the first to second embodiments, instead of connecting the operation cord 10 to the cord equalizer 8, the elevating cord 5 may be extended and the elevating 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 code 5, 5a, 5b: Lifting cord (tensile cord)
6: Bottom cap (moving member)
7: Lifting cord lead-out unit 8: Code equalizer 9: Tape holder 10: Operation code 11: Center member 13: First passage hole 14: Second passage hole 15: Internal space 16: First resistance imparting unit 17: Second resistance Granting portion 18: Fixed shaft 19: Elastic portion 20: Concavo-convex surface 21: Insertion hole 22: Movable sandwiching portion 23: Fixed sandwiching portion 24: Supporting portion 25: Release operation piece 26: Tilt knob 27: Ciller opening 28: Chiller drum 29: Tilt drum 30: Shaft 31: Leading runner 32: Runner 33: Moving stile (moving member)
34: Fixed stile 35: Case 36: Slit 37: Fixed support part 38: Communication slit 39: Rotating hole 40: Release bar 41: Extra length 42: Weight adjusting part 43: Turning shaft 45, 46: Engaging member 50: Equalizer body 51: Insertion groove 53: Cover (leaf spring)
54: Tapered surface 55: Bottom surface 57: Connection part 58: Opening / closing end 60: Knot 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: Cord guide portion 74: Operation code insertion hole 75: 1st space 76: 2nd space 77: Spring (urging means)
78: Slide shaft (slide part)
79: Spring locking portion 80: Third space portion 81: Flange 82: Cord load detecting portion 83: Flange locking portion 84: Engagement shaft (case side engaging portion)
85: Cylindrical part 86: Arm (cord holding member side engaging part)
87: Locking portion 88: Convex portion 89: Cord fixing portion 91: Inclined engaging portion 92: Inclined slide portion 93: Partition wall 94: Rib 96: Holding portion

Claims (6)

A shielding device including a support member installed on a building and a cord equalizer for holding a tension cord hanging from the support member.
The tension cord is led out from the support member through a cord lead-out portion provided on the support member.
An intrusion prevention member that cannot pass through the cord lead-out portion is supported by the tension cord.
The intrusion prevention member is arranged between the cord equalizer and the support member.
The tension cord is configured to be detachable from the cord equalizer.
A shielding device in which the entry prevention member is locked by the detached tension cord while the tension cord is detached from the cord equalizer. The shielding device according to claim 1.
The entry prevention member is a shielding device that prevents the tension cord detached from the cord equalizer from being drawn into the support member. The shielding device according to claim 1 or 2.
The tension cord comprises first and second tension cords.
The entry prevention member includes first and second entry prevention members.
The first and second tension cords are shielding devices that support the first and second entry prevention members, respectively. The shielding device according to claim 1 or 2.
The tension cord includes a plurality of tension cords and comprises a plurality of tension cords.
A part of the plurality of tension cords supports the intrusion prevention member and supports the entry prevention member.
The rest of the plurality of tension cords is a shielding device that does not support the intrusion prevention member. The shielding device according to any one of claims 1 to 4.
The entry prevention member includes a through hole and has a through hole.
A shielding device in which the entry prevention member is supported by the tension cord by inserting the tension cord into the through hole. The shielding device according to any one of claims 1 to 5.
The intrusion prevention member is a shielding device that can move relative to the tension cord.