JP6771378B2 - Cloaking device - Google Patents

Description

The present invention relates to a shielding device such as a horizontal blind, a raised curtain, a pleated screen, a roll-up screen, a vertical blind, a curtain rail, an accordion curtain, a vertical pleated screen, a vertical roll screen, and a panel curtain.

In the shielding device, there is a type in which the opening / closing operation of the opening is performed by so-called stringing. For example, in the horizontal blind described in Patent Document 1, one end of a plurality of elevating cords is attached to a bottom rail provided under the shielding member, and the other end side of the elevating cord (this is called a tension cord) is attached. It is routed inside the headbox, gathered at one end of the headbox, and hung down. The plurality of tension cords are bundled by a cord equalizer (safety bush), and the shielding member is operated by pulling or pulling back the cord equalizer or another operation cord connected to the cord equalizer. ..

Japanese Unexamined Patent Publication No. 8-189270

By the way, in the horizontal blind of Patent Document 1, when a foreign substance is caught in a loop formed by a plurality of tension cords and a cord equalizer, the tension cord and the cord equalizer are disengaged for safety. Is secured. However, in such a configuration, since the loop itself is within the reach of the user, if the tension cord and the cord equalizer are not disengaged for some reason, the loop will not be released and there is room for improvement in reliability. was there.

The present invention has been made in view of such circumstances, and provides a shielding device with enhanced safety.

According to the present invention, it is a shielding device that opens and closes a shielding member by pulling a cord derived from a lead-out portion of the head box, and pulls the cord into the head box and a stopper for restricting the movement of the cord. It is provided with a pull-in device, and the pull-in device is provided with a urging means, and when the cord is pulled out from the headbox and then the cord is stopped from being pulled out, the cord is urged to pull in the cord. The pull-in device is provided with a shielding device that is arranged closer to the lead-out portion than the stopper.

Since the shielding device of the present invention includes a pull-in device that pulls the cord derived from the head box into the head box, even if the cord is pulled out from the head box to open / close the shielding device, the cord pulled out by the pull-in device. Is pulled into the headbox. Therefore, even if there is a possibility that a loop may be formed due to a plurality of codes derived from the headbox, the loop is pulled into the headbox, so that it is possible to improve safety. ..

Hereinafter, various embodiments of the present invention will be illustrated. The embodiments shown below can be combined with each other.

Preferably, the urging means is configured to be energized when the cord is pulled out of the headbox.

Preferably, a locking portion for attaching the cord derived from the out-licensing portion is provided, and the engaging of the locking portion and the out-licensing portion restricts the pulling of the cord by the pulling device. Is configured.

Preferably, the pull-in device includes a rotating member that comes into contact with the cord and rotates with the movement of the cord, and the urging means is energized with the rotation of the rotating member in one direction. The urging means is configured to urge the cord as the rotating member rotates in the other direction.

Preferably, the rotating member and the opposing member facing the rotating member form a sandwiching body that sandwiches the cord, and the sandwiching body transmits the movement of the cord to the urging means. Is configured.

Preferably, the cord is formed of an opening / closing cord for opening / closing the shielding member and a tension cord derived from the lead-out portion, and the opening / closing cord and the tension cord are attached to the rotating member, respectively, and the tension is provided. The opening / closing cord is wound when the cord is pulled out from the head box, and the tension cord is wound when the opening / closing cord is pulled out from the head box.

It is a front view which shows the horizontal blind of 1st Embodiment of this invention. It is a top view which shows the pull-in device 11 of the horizontal blind of FIG. It is sectional drawing when the horizontal blind of FIG. 1 is cut along the line AA of FIG. FIG. 4A is a diagram showing the operation of the horizontal blind of FIG. 1, FIG. 4A is a state in which the shielding member is closed, FIG. 4B is a state in which the cord equalizer 7 is pulled from the state of FIG. 4A and the shielding member is pulled up, and FIG. 4C is FIG. 4B. The cord equalizer 7 is separated from the state of, and the cord is pulled in by the pulling device 11. 5A is a plan view corresponding to the state of FIG. 4B, and FIG. 5B is a plan view corresponding to the state of FIG. 4C. It is a figure when the horizontal blind of FIG. 1 is fully opened, FIG. 6A shows a state in which the cord equalizer 7 is pulled down, and FIG. 6B shows a state in which the elevating cord 5 is pulled in. It is a top view which shows the modification of the horizontal blind of FIG. 8A and 8B are plan views showing other modifications of the horizontal blind of FIG. 1, respectively. It is a figure which shows the horizontal blind of the 2nd Embodiment of this invention, FIG. 8A shows the state which the cord equalizer 7 is pulled down, and FIG. 8B is the state which the elevating cord 5 is pulled in. It is a perspective view which shows the pull-in device of the horizontal blind of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. 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)
<Overall configuration>
In the horizontal blind as a solar radiation shielding device shown in FIG. 1, a multi-stage slats 3 are suspended and supported via a plurality of ladder cords 2 hanging from the head box 1, and a bottom rail 3a is provided at the lower end of the ladder cord 2. Is suspended and supported. Hereinafter, the slats 3 and the bottom rail 3a will be collectively referred to as a “shielding member”.

The ladder cord 2 is attached to a tilt drum (not shown) arranged in the head box 1, and the tilt drum rotates according to the rotation of the tilt shaft (not shown) fitted in the center thereof. Is configured. Then, the tilt drum is rotated by rotating the tilt shaft by the rotation operation of the operation rod 4 suspended and supported at one end of the head box 1, and one of the warp threads of the ladder cord 2 is pulled up to form the slats 3 and each slats 3. The angle of the bottom rail 3a can be adjusted in the same phase. Any known configuration can be applied to such a rotating operation of the ladder code 2. In the drawings other than FIG. 1, the configuration for adjusting the angle of the operation rod 4 and the like is omitted.

A plurality of (three in this embodiment) lifting cords 5 (cords within the scope of claims) are hung from the head box 1 in the vicinity of the ladder cord 2, and one end of each lifting cord 5 is attached to the bottom rail 3a. Be worn. On the other hand, the other end side of 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 cords 5 guided to the right side are aggregated and led out from the lead-out portion 6 to the outside of the head box 1 via a stopper 10 for preventing the bottom rail 3a from dropping its own weight. Here, the stopper can select a state in which the movement of the lifting cord 5 is blocked or a state in which the movement is allowed by operating the lifting cord 5. Specifically, when the elevating cord 5 led out from the out-licensing unit 6 is slightly pulled and then released while the elevating cord 5 is blocked from moving, the stopper is released and the bottom rail 3a descends by its own weight. When the elevating cord 5 is slightly pulled and then released from the above position, the stopper is activated to prevent the elevating cord 5 from moving. A known configuration will be applied to such a stopper configuration, and detailed description thereof will be omitted. By the action of such a stopper, the shielding member (slat 3 and bottom rail 3a) can be operated between the closed state shown in FIG. 4 (a) and the open state shown in FIG. 4 (b) by operating the elevating cord 5. The opening in the vertical direction can be adjusted.

Further, in the present embodiment, the elevating cord 5 led out from the lead-out unit 6 is placed in the head box 1 at a position on the lead-out unit 6 side of the head box 10, in other words, between the stopper 10 and the lead-out unit 6. A pull-in device 11 is arranged to pull in. The retracting device 11 will be described later.

The plurality of elevating cords 5 derived from the lead-out unit 6 are hung from the head box 1, and their ends (the other ends) are attached to the cord equalizer 7. Therefore, a loop structure is formed by the plurality of elevating cords 5 and the cord equalizer 7. The method of connecting the elevating cord 5 and the cord equalizer 7 is not particularly limited, and examples thereof include welding, adhesion, sewing, caulking, knotting, and engagement between the knot ball and the hole.

Then, one operation cord 8 operated by the user to raise and lower the shielding member is connected to the cord equalizer 7, and the other end of the operation cord 8 is connected to the bottom rail 3a. Since one end of the operation cord 8 is connected to the bottom rail 3a in this way, the end portion of the operation cord 8 moves up and down together with the bottom rail 3a as the bottom rail 3a moves up and down, and the operation code 8 or the lift cord 5 moves up and down. The position of the lowest portion is maintained at a substantially constant height during ascent and descent (see FIGS. 4A and 4B). Further, the operation code 8 is configured to be separable by the safety joint 9.

<Structure of retractable device>
Next, the pull-in device 11 of the present embodiment will be described. As shown in FIG. 2, the retracting device 11 of the present embodiment includes a sandwiching body 12 for sandwiching the elevating cord 5, an urging means 13, and an alignment plate 14 for aligning a plurality of elevating cords 5. ..

As shown in FIGS. 2 and 3, the sandwiching body 12 is formed by forming a pair of a tension transmission roller 20 as a rotating member and an idle roller 21 as an opposing member facing the tension transmission roller 20. Specifically, the tension transmission roller 20 is held by the shaft 20s vertically arranged on the bottom member 1a (see FIG. 3) of the head box 1, and is held by the shaft 20s and abuts on the elevating cord 5, and the elevating cord It is composed of a roller portion 20r that converts the movement of 5 into rotation, and a gear 20g that is attached above the roller portion 20r of the shaft 20s. On the other hand, the idle roller 21 includes a shaft 21s arranged parallel to the shaft 20s of the tension transmission roller 20 on the bottom member 1a of the head box 1, and a roller portion 21r facing the roller portion 20r. A plurality of elevating cords 5 are sandwiched between the roller portion 20r and the roller portion 21r, and the tension transmission roller 20 rotates reliably with respect to the movement of the elevating cord 5, and conversely, the tension transmission roller 20 rotates. Then, the elevating cord 5 moves without slipping.

The urging means 13 includes a mainspring 13c, a shaft 13s and a gear 13g, and the mainspring 13c is configured to be energized when the shaft 13s rotates in one direction and to urge the shaft 13s in the other direction. Here, the torque of the mainspring 13c is larger than the gravity applied by the pulling force of the sandwiching body 12 (tension transmission roller 20) to the plurality of elevating cords 5 and cord equalizers 7 led out from the lead-out portion 6 of the head box 1. It is set to be large. Further, the gear 13g is attached above the shaft 13s and is arranged so as to mesh with the gear 20g of the tension transmission roller 20. In the present embodiment, the gear 13 g preferably has a larger diameter than the gear 20 g. As a result, the rotation of the mainspring 13c is accelerated and transmitted to the tension transmission roller 20, so that the mainspring 13c can wind up the long lifting cord 5 at a small number of rotations.

As shown in FIG. 2, the alignment plate 14 is arranged on the stopper 10 side of the sandwiching body 12, and as shown in FIG. 3, an oval shape through which a plurality of elevating cords 5 that have passed through the sandwiching body 12 are passed. It has a through hole 14h. By the alignment plate 14, a plurality of elevating cords 5 are vertically aligned and sandwiched between the sandwiching bodies 12. The shape of the alignment plate 14 is not limited to the above shape, and any shape can be used as long as a plurality of elevating cords 5 are appropriately sandwiched between the sandwiching bodies 12.

Then, as shown in FIGS. 5A and 5B, a plurality of elevating cords 5 pulled in by the pull-in device 11 are accumulated between the alignment plate 14 and the stopper 10, and a storage space S for accommodating these is provided. There is. An accommodating portion (not shown) that covers the accommodating space S may be provided.

<Operation>
Next, the operation of raising and lowering the shielding member of the horizontal blind of the present embodiment, particularly the operation of the retracting device 11, will be described with reference to FIGS. 4A to 4C.

First, when the shielding member is in the closed state shown in FIG. 4A, the elevating cord 5 connected to the bottom rail 3a is pulled out to the shielding member side. Therefore, on the lead-out unit 6 side, the code equalizer 7 is raised to the vicinity of the lead-out unit 6 of the head box 1, and the elevating code 5 is not derived from the lead-out unit 6 (the code equalizer 7 is locked to the lead-out unit 6). May be configured to be).

When the cord equalizer 7 or the operation cord 8 is pinched and pulled down from this state, the plurality of elevating cords 5 connected to the cord equalizer 7 move, the bottom rail 3a rises, and the plurality of elevating cords 5 Is derived from the out-licensing unit 6. When the cord equalizer 7 is released at an arbitrary position, the stopper 10 described above prevents the lifting cord 5 from moving, and the shielding member and the cord equalizer 7 stop at that position (see FIG. 4B).

Here, during the above operation, that is, when the elevating cord 5 is led out from the out-licensing unit 6, the elevating cord 5 moves to the out-licensing unit 6 side (right side in FIG. 2) in the head box 1. Then, since the sandwiching body 12 (see FIGS. 2 and 3) of the retracting device 11 sandwiches the elevating cord 5, the tension transmission roller 20 (roller portion 20r) rotates accordingly, and the tension transmission roller 20 (roller portion 20r) rotates accordingly. The gear 13g of the urging means 13 that meshes with the gear 20g also rotates. Then, the shaft 13s of the urging means 13 rotates in one direction (clockwise in FIG. 2), and the mainspring 13c is stored.

Then, after the above operation, when the pinched cord equalizer 7 or the operation cord 8 is released, the shaft 13s rotates in the other direction (counterclockwise in FIG. 2) due to the urging force of the stored spring 13c, and the gear 13 g and the gear 20 g that meshes with the 13 g rotate in the opposite direction to when the elevating cord 5 is pulled out. As a result, the tension transmission roller 20 (roller portion 20r) rotates, and the elevating cord 5 sandwiched between this and the idle roller 21 is urged to the stopper 10 side (left side in FIG. 2). Here, since the elevating cord 5 is prevented from moving by the stopper 10, the elevating cord 5 is accumulated in the accommodation space S between the stopper 10 and the retracting device 11 (see FIGS. 5A and 5B). As a result, the elevating cord 5 led out from the out-licensing unit 6 is pulled into the head box 1 and changes from the state shown in FIG. 4B to the state shown in FIG. 4C, and the code equalizer 7 is locked to the out-licensing unit 6. As a result, further pulling of the pulling device 11 is prevented. In this way, the code equalizer 7 also functions as a locking portion within the scope of claims. A separate locking portion may be provided above the cord equalizer 7.

To raise the shielding member again from this state, the cord equalizer 7 or the operation cord 8 is pinched again and pulled down. At this time, the shielding member is not lifted until the elevating cord 5 accumulated between the stopper 10 and the retracting device 11 is pulled out, and after all the accumulated elevating cords 5 are pulled out, the stopper 10 is released. , The shielding member will rise. Then, when the bottom rail 3a moves to the highest position near the head box 1, the shielding member is in the open state shown in FIG. 6A. After that, when the pinched cord equalizer 7 or the operation cord 8 is released, as described above, the elevating cord 5 is prevented from moving by the stopper 10, and the urging force of the stored balance spring 13c causes the lifting cord 5 to be released from the lead-out unit 6. It is pulled in and becomes the state shown in FIG. 6B.

In the state where the elevating cord 5 shown in FIG. 4C or FIG. 6B is pulled in, when a load is applied to the loop formed by the operation cord 8, the safety joint 9 is separated to maintain safety. It has become like.

<Effect>
With the above configuration, the following actions and effects can be obtained.
(1) A plurality of elevating cords 5 pulled out by pulling the code equalizer 7 or the operation code 8 are pulled into the head box 1 after the operation by the pull-in device 11. Therefore, in the case of the conventional shielding device, as shown in FIGS. 4B and 6A, there is a risk that foreign matter may be caught in the loop formed by the elevating cord 5 and the cord equalizer 7. However, in the shielding device of the present embodiment, Since such a loop does not occur outside the head box 1 as shown in FIGS. 4C and 6B, safety can be ensured.
(2) Since the pull-in device 11 includes the mainspring 13c, the lifting cord 5 can be pulled in by using the operating force at the time of raising and lowering without using another power source.
(3) Since a plurality of elevating cords 5 are constantly sandwiched by the sandwiching body 12 composed of the tension transmission roller 20 and the idle roller 21, the energy storage of the mainspring 13c and the spring of the mainspring are performed without energy loss. The urging by 13c can be performed.

The present embodiment can also be implemented in the following aspects.

In the above embodiment, the tension transmission rollers 20 and the shafts 20s and 21s of the idle rollers 21 constituting the sandwiching body 12 are vertically arranged in the head box 1 (see FIGS. 2 and 3), but FIG. 7 shows. As shown in the plan view, the shafts 20s and 21s may be arranged so as to extend in the front-rear direction of the head box 1. In the configuration of FIG. 7, since the tension transmission roller 20 and the idle roller 21 are arranged side by side in the vertical direction, the idle roller 21 cannot be seen. With such an arrangement, the entanglement of the elevating cord 5 can be suppressed between the stopper 10 and the sandwiching body 12.

Further, as shown in FIG. 7, it is also possible to arrange the partition member 22 that partitions the accommodation space S between the stopper 10 and the sandwiching body 12. If the number of the elevating cords 5 is three as shown in FIG. 7, it is preferable to provide two partition members 22 so as to be arranged between the adjacent elevating cords 5. Further, when the sandwiching body 12 is arranged so as to extend in the front-rear direction of the head box 1 and the elevating cord 5 is extended horizontally as in the form of FIG. 7, it is parallel to the elevating cord 5 and perpendicular to the bottom surface. It is preferable to use a plate-shaped member to be arranged. By arranging such a partition member 22, it is possible to prevent the plurality of elevating cords 5 drawn by the pulling device 11 from being entangled in the accommodation space S.

Further, in the above embodiment, the urging means 13 is provided with the mainspring 13c, and the shaft 13s and the gear 13g are rotated by the urging force of the mainspring 13c, but even if they are rotated by other means. good. For example, a coil spring or a constant load spring may be used instead of the mainspring. Further, as shown in FIG. 8A, the configuration is provided with the spring spring 13a and the urging cord 13y, the urging cord 13y is wound around the winding portion 13r attached to the shaft 13s, and the spring spring 13a is the urging cord. It is also possible to rotate the shaft 13s by pulling the 13y. Further, as shown in FIG. 8B, the urging cord 13y wound around the winding portion 13r is derived from the head box, and the weight 13b is attached to the end of the derived urging cord 13y to be attached to the weight 13b. It is also possible to rotate the shaft 13s to which the winding portion 13r is attached by the applied gravity. In the configuration of FIG. 8B, the urging code 13y is derived outside the head box 1, but a loop is not formed and the urging portion 13r is urged by increasing the diameter. Since the derived portion of the code 13y can be shortened, safety can be maintained.

(Second Embodiment)
The shielding device according to the second embodiment of the present invention has a configuration similar to that of the first embodiment, but the configurations of the elevating cord 5 and the retracting device 11 are mainly different. Hereinafter, these differences will be mainly described.

In the shielding device of the present embodiment, the elevating cord 5 connected to the bottom rail 3a (shielding member) is not directly derived from the lead-out portion 6 of the head box 1, but as shown in FIGS. 9A and 10. It is attached to the rotating member 30 that constitutes the pull-in device 11. Then, one tension cord 5p also attached to the rotating member 30 is led out from the lead-out unit 6, and the tension cord 5p is connected to the operation cord 8 via the locking portion 37 that prevents the pull-in device 11 from pulling in. Has been done.

The pulling device 11 of the present embodiment pulls the tension cord 5p into the head box 1, and as shown in FIG. 10, the above-mentioned rotating member 30 and the urging means 13 having a mainspring spring (not shown) It has. The rotating member 30 is provided with discs 31, 32, 33 having large diameters at both ends and the center in the axial direction, respectively, and a lifting cord 5 is wound between the discs 31 and the discs 32. A tension cord winding portion 35 around which the tension cord 5p is wound is formed between the take portion 34, the disk portion 32, and the disk portion 33. The elevating cord 5 and the tension cord 5p are in a state in which the elevating cord winding portion 34 and the tension cord winding portion 35 are wound around the other cord when one cord is unwound. It is attached so that it becomes (see FIG. 10). In FIG. 10, the diameters of the elevating cord winding unit 34 and the tension cord winding unit 35 are the same, but these diameters are different, that is, the tension cord winding unit is larger than the elevating cord winding unit 34, for example. The diameter of 35 may be increased. In addition, the urging means 13 is charged when the rotating member 30 rotates in one direction (the direction in which the tension cord 5p is pulled out, clockwise in FIG. 10), and the rotating member 30 is wound in the other direction (the tension cord 5p is wound around). It is configured to urge in the direction of movement, counterclockwise in FIG.

With the above configuration, in the pull-in device 11 of the present embodiment, when the tension cord 5p is pulled out from the head box 1, the elevating cord 5 is wound around the elevating cord winding unit 34, and the elevating cord 5 is drawn from the head box 1. When pulled out, the tension cord 5p is wound around the tension cord winding portion 35. Therefore, as shown in FIG. 9A, when the cord equalizer 7 or the operation cord 8 is pulled and released, the movement of the elevating cord 5 is restricted by the stopper 10, and the rotating member 30 is rotated by the urging means 13. The tension cord 5p is wound up, and the locking portion 37 shown in FIG. 9B is locked to the lead-out portion 6. At this time, the elevating cord 5 is accommodated in the accommodation space S between the stopper 10 and the retracting device 11 as in the first embodiment.

Even with the above configuration, safety can be ensured because loops due to a plurality of elevating cords 5 do not occur outside the head box 1.

The present invention can also be implemented in the following aspects.
-In the above-described embodiment, the urging means 13 (spring 13c) is stored by pulling the cord equalizer 7 or the operation code 8 and pulling out the lifting cord 5, but the spring 13c is not necessarily the lifting cord. It is not necessary to have a configuration in which the balance spring 13c is stored when the 5 is pulled out, and it is also possible to have a configuration in which the spring 13c is stored by any other means.
-In the above-described embodiment, the locking portion 37 (cord equalizer 7) and the bottom rail 3a are connected by the operation cord 8, but the operation cord 8 is not provided and the elevating operation is performed only by pulling the locking portion 37. It is also possible to configure it to be performed.
-In the above-described embodiment, the number of lifting cords 5 is 3, but the number may be 2 or 4 or more.
-In the above-described embodiment, an example in which the present invention is applied to a horizontal blind is shown, but it can also be applied to a pleated screen or a roman shade having an operation code hanging from a head box and a code equalizer. It can also be applied to vertical blinds with operation cords hanging from hanger rails and cord equalizers.

1: Head box 1a: Bottom member 2: Ladder cord 3: Slat 3a: Bottom rail 4: Operation rod 5: Lifting cord (cord)
6: Derivation part 7: Code equalizer (locking part)
8: Operation code 9: Safety joint 10: Stopper 11: Pull-in device 12: Sanding body 13: Biasing means 13c: Spring 13g, 20g: Gear 13s, 20s, 21s: Shaft 14: Alignment plate 14h: Through hole 20: Tension transmission roller (rotating member)
20r, 21r: Roller part 21: Idle roller

Claims (6)

A shielding device that opens and closes the shielding member by pulling a cord derived from the lead-out part of the headbox.
It is provided with a stopper for restricting the movement of the cord and a retracting device for pulling the cord into the headbox.
The pull-in device is provided with an urging means, and is configured to urge the cord and pull in the cord when the cord is pulled out from the headbox and then the cord is stopped from being pulled out.
The pull-in device is a shielding device arranged on the side of the lead-out portion with respect to the stopper. The shielding device according to claim 1, wherein the urging means is configured to accumulate energy when the cord is pulled out from the head box. A locking portion for attaching the cord derived from the out-licensing portion is provided, and the engaging of the locking portion and the out-licensing portion is configured to restrict the pulling of the cord by the pulling device. The shielding device according to claim 1 or 2. The pull-in device includes a rotating member that comes into contact with the cord and rotates as the cord moves.
Claim 1 is configured such that the urging means is accumulated with the rotation of the rotating member in one direction, and the urging means urges the cord with the rotation of the rotating member in the other direction. The shielding device according to any one of claims 3. A sandwiching body for sandwiching the cord is formed by the rotating member and an opposing member facing the rotating member, and the sandwiching body is configured to transmit the movement of the cord to the urging means. The shielding device according to any one of claims 1 to 4. The cord is formed of an opening / closing cord for opening / closing the shielding member and a tension cord derived from the lead-out portion, and the opening / closing cord and the tension cord are respectively attached to the rotating member.
Any of claims 1 to 4, wherein the opening / closing cord is wound when the tension cord is pulled out from the head box, and the tension cord is wound when the opening / closing cord is pulled out from the head box. The shielding device described in Crab.