JP6840509B2 - Horizontal blinds - Google Patents

Description

The present invention relates to a horizontal blind that enables a multi-stage slat elevating operation and an angle adjusting operation.

The horizontal blind can adjust the amount of solar radiation taken into the room by raising and lowering and tilting the multi-stage slats supported by the ladder cord suspended from the head box.

For example, a bottom rail is arranged at the lower end of the ladder cord, and the slat is raised and lowered by pulling the lifting cord attached to the bottom rail into the headbox or pulling it out from the headbox. Can be raised and lowered.

Among such horizontal blinds, there is a configuration in which the slats are raised and lowered in an inclined state, but the interference between the slats and the lifting cord is reduced, and the slats are raised and lowered for smooth descent or when the slats are raised. It is recommended to hold the slats horizontally and move up and down to reduce cord wear.

Therefore, there is disclosed a horizontal blind provided with a horizontal elevating mechanism capable of raising and lowering the slats by holding the slats horizontally when the slats are raised and lowered by winding or rewinding the elevating cord on the take-up shaft (for example, Patent Document). 1).

Further, there is disclosed a horizontal blind operating device capable of raising and lowering a slat by pulling an elevating cord so that the slat can be lowered smoothly and at an appropriate speed (see, for example, Patent Document 2).

The speed adjusting device (brake device disclosed in Patent Document 2) for smoothly and appropriately lowering the slat limits the moving speed of the elevating cord and sets the moving speed of the slat when descending to a constant value. The following is a braking device, and by providing such a speed adjusting device, it is possible to decelerate only when descending to exert a braking force to decelerate and lower the bottom rail and slats.

Japanese Unexamined Patent Publication No. 2016-30985 Japanese Unexamined Patent Publication No. 10-140950

As in Patent Document 1 described above, a technique for providing a horizontal elevating mechanism capable of raising and lowering a slats by holding the slats horizontally when the slats are raised and lowered by winding or rewinding the elevating cord on a take-up shaft is disclosed. However, a technique that allows the slats to be held horizontally and raised and lowered with a simpler configuration is desired.

Further, as in Patent Document 2 described above, even in the case of a horizontal blind that raises and lowers the slats by pulling the elevating cord, the interference between the slats and the elevating cord is reduced, and the slats are smoothly lowered or the slats are raised. It is recommended to hold the slats horizontally to ascend and descend to reduce wear on the elevating cord over time. On the other hand, it is practical that the bottom rail is in a shielded state when it is lowered to the lower limit position.

Therefore, when the slats are held horizontally and the bottom rail is lowered to the lower limit position, the slats are automatically set to the positive shielding state at the end of the descent, and when the slats in the positive shielding state are raised from the lower limit position of the bottom rail, the slats are raised. A technique for automatically transitioning the slats to a horizontal state at the start is desired.

A first object of the present invention is to provide a horizontal blind that can automatically shield a slat that holds the slat substantially horizontally and raises and lowers it at the lower limit of the bottom rail in view of the above-mentioned problems.

A second object of the present invention is to provide a horizontal blind that can hold the slats horizontally and move up and down in view of the above problems.

The horizontal blind of the present invention is a tilt drum that supports a bottom rail together with a multi-stage slats from a tilt drum rotatably supported in a head box via a ladder cord, and is rotated by a rotation operation of a drive shaft. A horizontal blind that allows the angle of the slat of the steps to be adjusted in the same phase and allows the slat of the multiple steps to be raised and lowered by the raising and lowering operation of the bottom rail by the raising and lowering cord. It includes a lifting cord that connects one end to either, and a lifting code mobile causing a predetermined pulling force to the lifting cord into the other end of the lifting cord, the lifting code is characterized that it is connected at a position near, or the position of the upper than the uppermost slat either to the uppermost slat among the front and rear of the warp of the predetermined ladder cord.

Further, in the horizontal blind of the present invention, the lifting cord movable device is configured to change the angle of the multi-stage slats by pulling in or pulling out the lifting cord from the head box. It is a feature.

Further, in the horizontal blind of the present invention, the lifting cord movable device is configured to transition between a substantially horizontal state and a shielded state in the multi-stage slats depending on the transfer amount of the lifting cord. And.

Further, in the horizontal blind of the present invention, the lifting cord movable device is configured so that the slat angle that forms a shielding state in the multi-stage slat can be selected by selecting the transfer amount of the lifting cord. It is a feature.

Further, the horizontal blind of the present invention is further provided with a speed adjusting device that limits the moving speed of the elevating cord to brake the moving speed of the slats when descending to a certain value or less.

Further, in the horizontal blind of the present invention, the lifting cord is characterized by being composed of a single cord or a plurality of cords via a repeater.

Further, the horizontal blind of the present invention is the tilt drum that supports the bottom rail together with a multi-stage slats from a tilt drum rotatably supported in the head box via a ladder cord and rotates by rotating the drive shaft. A horizontal blind that allows the angle of the multi-stage slats to be adjusted in the same phase and allows the multi-stage slats to be raised and lowered by the raising and lowering operation of the bottom rail by the raising and lowering cord, and is a pair of front and rear warp threads of a predetermined ladder cord. A lifting cord for connecting one end to any one of them, and a lifting cord movable device for connecting the other end of the lifting cord to generate a predetermined pulling force with respect to the lifting cord. The predetermined pulling force generated by the lifting cord movable device with respect to the lifting cord is said when the load of the warp threads of the predetermined ladder cord connecting one end of the lifting cord becomes less than a predetermined value. It is characterized in that the warp yarn can be lifted by a lifting cord, and the multi-stage slats are set to transition from a shielded state to a substantially horizontal state.

Further, the horizontal blind of the present invention is the tilt drum that supports the bottom rail together with a multi-stage slats from a tilt drum rotatably supported in the head box via a ladder cord and rotates by rotating the drive shaft. A horizontal blind that allows the angle of the multi-stage slats to be adjusted in the same phase and allows the multi-stage slats to be raised and lowered by the raising and lowering operation of the bottom rail by the lifting cord, and is a pair of front and rear warp threads of a predetermined ladder cord. A lifting cord for connecting one end to any one of them, and a lifting cord movable device for connecting the other end of the lifting cord to generate a predetermined pulling force with respect to the lifting cord. The predetermined pulling force generated by the lifting cord movable device with respect to the lifting cord is said when the load of the warp threads of the predetermined ladder cord connecting one end of the lifting cord becomes a predetermined value or more. It is characterized in that the warp yarn cannot be lifted by the lifting cord, and the multi-stage slats are set to transition from a substantially horizontal state to a shielded state.

Further, the horizontal blind of the present invention is the tilt drum that supports the bottom rail together with a multi-stage slats from a tilt drum rotatably supported in the head box via a ladder cord and rotates by rotating the drive shaft. A horizontal blind that allows the angle of the multi-stage slats to be adjusted in the same phase and allows the multi-stage slats to be raised and lowered by the raising and lowering operation of the bottom rail by the raising and lowering cord, and is a pair of front and rear warp threads of a predetermined ladder cord. A lifting cord for connecting one end to any one of them, and a lifting cord movable device for connecting the other end of the lifting cord to generate a predetermined pulling force with respect to the lifting cord. The lifting cord movable device is a linear damper having a unidirectional urging means or urging in one rotation direction in order to generate the predetermined pulling force with respect to the lifting cord. It is characterized by comprising a rotating or swinging damper having a urging means.

Further, in the horizontal blind of the present invention, the urging means in the lifting cord movable device is configured to generate the predetermined pulling force according to the weight of the bottom rail with respect to the lifting cord. It is characterized by.

Further, the horizontal blind of the present invention is the tilt drum that supports the bottom rail together with a multi-stage slats from a tilt drum rotatably supported in the head box via a ladder cord and rotates by rotating the drive shaft. A horizontal blind that allows the angle of the multi-stage slats to be adjusted in the same phase and allows the multi-stage slats to be raised and lowered by the raising and lowering operation of the bottom rail by the raising and lowering cord, and is a pair of front and rear warp threads of a predetermined ladder cord. A lifting cord for connecting one end to any one of them, and a lifting cord movable device for connecting the other end of the lifting cord to generate a predetermined pulling force with respect to the lifting cord. The lifting cord movable device comprises a linear motion damper having a urging means for urging the movable rod to which one end of the lifting cord is attached in one direction, and the stroke amount of the movable rod is determined by the lifting cord. The urging means always urges the movable rod in one direction so as to change the relative position of the movable rod with a value at which the weight of the bottom rail is applied as a load of the warp of the predetermined ladder cord as a threshold value corresponding to the amount of transfer. As a result, it is characterized in that it is configured to transition between a substantially horizontal state and a shielded state in the multi-stage slat.

Further, in the horizontal blind of the present invention, the elevating cord can be pulled out from the head box so that it can be pulled out, or can be wound or rewound by a winding shaft that is rotated by the rotation operation of the drive shaft. It is characterized in that it is attached to the take-up shaft.

According to the present invention, it is possible to maintain the cord quality or improve the operability caused by the raising and lowering operation of the slats. In particular, when the slats are held horizontally and the bottom rail is lowered to the lower limit position, the slats are automatically put into the positive shielding state at the end of the descent, and when the slats in the positive shielding state are raised from the lower limit position of the bottom rail, the ascending starts. It is possible to construct a horizontal blind that automatically transitions the slats to the horizontal state at times.

Further, it is possible to construct a horizontal blind that holds the slats horizontally and allows them to move up and down.

It is a front view which shows the schematic structure of the horizontal blind of 1st Embodiment by this invention. (A) is a plan view simply showing a schematic configuration in a head box in the horizontal blind of the first embodiment according to the present invention as an example, and (b) is a plan view showing a modified example thereof. (A) and (b) are side views which show an example of the whole operation of the horizontal blind of 1st Embodiment by this invention, respectively. It is a side view which shows the schematic structure of the suspension cord movable device in the horizontal blind of 1st Embodiment by this invention, and the operation when the bottom rail is lowered. It is a side view which shows the schematic structure of the suspension cord movable device in the horizontal blind of 1st Embodiment by this invention, and its operation at the lower limit position of a bottom rail simply. It is a front view which shows the schematic structure of the horizontal blind of the 2nd Embodiment by this invention. (A) is a plan view simply showing a schematic configuration in a head box in the horizontal blind of the third embodiment according to the present invention as an example, and (b) is a plan view showing a modified example thereof. (A) and (b) are side views which show the whole operation of the horizontal blind of 3rd Embodiment by this invention, respectively.

Hereinafter, the horizontal blinds of each embodiment according to the present invention will be described with reference to the drawings. In the specification of the present application, with respect to the front view of the horizontal blind shown in FIG. 1, the upper side and the lower side in the drawing are upward (or upper) and lower (or lower), respectively, according to the hanging direction of the slats. It will be defined and described by defining the left direction in the drawing as the left side of the horizontal blind and the right direction in the drawing as the right side of the horizontal blind. Further, in the example described below, with respect to the front view of the horizontal blind shown in FIG. 1, the side to be visually recognized is the front side (or the indoor side), and the opposite side is the rear side (or the outdoor side).

[First Embodiment]
(overall structure)
FIG. 1 is a front view showing a schematic configuration of a horizontal blind according to the first embodiment of the present invention. In the horizontal blind of the present embodiment, a multi-stage slats 3 are supported via ladder cords 2 suspended from the left and right sides of the head box 1 and the center thereof, and a bottom rail 4 is suspended and supported at the lower end of the ladder cord 2. Has been done. The head box 1 is fixed to a mounting surface such as a ceiling surface via a plurality of brackets 6.

Further, a plurality of elevating cords 11 are hung from the head box 1 alongside the ladder cord 2 on the outdoor side or the indoor side, and a bottom rail 4 is attached to one end of the elevating cord 11. The other ends of the plurality of elevating cords 11 are guided to the right in the head box 1 and passed through the stopper device 13, then hang down from the cord outlet 1a to the outside and are connected to the cord equalizer 8.

A support member 5 for supporting the ladder cord 2 and the elevating cord 11 is arranged in the head box 1, and a hexagonal rod-shaped drive shaft 12 is inserted through the support member 5.

A tilt drum 51 is rotatably supported by the support member 5, and a drive shaft 12 is inserted through the tilt drum 51 so as to be relatively non-rotatable. Therefore, when the drive shaft 12 is rotated, the tilt drum 51 is rotated, and the angles of the multi-stage slats 3 suspended and supported by the ladder cord 2 are adjusted in the same phase.

One end of the drive shaft 12 is fitted to an output shaft of a gear box (not shown) arranged at one end of the head box 1. The input shaft of the gear box projects obliquely downward from one end of the head box 1, and the tilt pole 9 is suspended and supported from the input shaft. Then, when the tilt pole 9 is rotated, the drive shaft 12 is rotated via the gear box.

In the example shown in FIG. 1, one end of the operation cord 7 is attached to the lower end of the cord equalizer 8 that connects the ends of the plurality of elevating cords 11 hanging from the cord outlet 1a. The other end of the operation code 7 is attached to the bottom rail 4.

However, as a modification of deriving to the outside for the operation of the plurality of elevating cords 11, each end of the plurality of elevating cords 11 is guided into the tilt pole 9 without hanging from the cord outlet 1a, and at the lower end portion thereof. It can also be configured to be connected to a knob.

In the example shown in FIG. 1, if the operation code 7, the code equalizer 8, or a plurality of elevating cords 11 are operated to pull out the elevating cord 11 from the head box 1 from the cord outlet 1a, the bottom rail 4 is pulled up and the slats 3 are pulled up. Rise. When the pull-out operation of the elevating cord 11 is stopped, the stopper device 13 is activated to prevent the slat 3 and the bottom rail 4 from being lowered by their own weight. Further, when the operation of the stopper device 13 is released, the slats 3 and the bottom rail 4 descend based on their own weights.

In the horizontal blind that enables the raising and lowering operation and the angle adjustment operation of the slat 3 in multiple stages in this way, the interference between the slat and the raising and lowering cord is reduced, and the slat is raised and lowered for smooth descent or when the slat is raised. In order to reduce the wear of the cord, it is preferable to hold the slats horizontally and move them up and down.

Therefore, in the horizontal blind of the present embodiment, when the slat 3 is held horizontally and the bottom rail 4 is lowered to the lower limit position, the slat 3 is automatically in the normal shielding state (fully closed state) or the reverse shielding state (fully closed state) at the end of the lowering. When raising the slat 3 in the normal shielding state (fully closed state) or the reverse shielding state (reverse fully closed state) from the lower limit position of the bottom rail 4 in the reverse fully closed state), the slat 3 is automatically raised at the start of ascending. It is designed to transition to the horizontal state.

Specifically, in the horizontal blind of the present embodiment, at a position near the uppermost slat 3, the locking member 16 causes one of the pair of front and rear warp threads of the ladder cord 2 (in this example, the warp threads on the outdoor side). ), And a lifting cord movable device 14 that connects the other end of the lifting cord 15 to generate a predetermined pulling force with respect to the lifting cord 15. ..

FIG. 2A is a plan view simply showing a schematic configuration inside the headbox 1 in the horizontal blind according to the first embodiment shown in FIG. 1 as an example, and FIG. 2B is a modification thereof. It is a top view which shows an example.

First, in the configurations shown in FIGS. 2 (a) and 2 (b), the vicinity of the outdoor end of the support members 5 on the left and right sides of the head box 1 and the vicinity of the indoor end of the support member 5 on the center side of the head box 1. Each end of each of the plurality of elevating cords 11 hangs down from the pulley position 5a provided in. Each end of each of the plurality of elevating cords 11 hanging from the pulley position 5a is attached to the bottom rail 4. On the other hand, the other ends of the plurality of elevating cords 11 are guided to the right in the head box 1 and passed through the stopper device 13, then hang down from the cord outlet 1a to the outside and are connected to the cord equalizer 8. A pair of front and rear warp threads of the ladder cord 2 are hung on each support member 5.

Here, in the embodiment of the present embodiment shown in FIG. 2A, one lifting cord movable device 14 and a plurality of lifting cords 15 corresponding to the number of support members 5 are used.

The lifting cord movable device 14 is configured as a linear motion damper, and includes a main body case 141 and a movable rod 142 that is constantly urged in one direction and moves linearly with a predetermined stroke amount. The tip portion 143 of the movable rod 142 can lock the ends of the plurality of lifting cords 15.

Then, one end of each of the plurality of lifting cords 15 is hung from the pulley position 5b provided near the outdoor end of each of the support members 5 arranged on the left and right sides and the center side of the head box 1. Each end of each of the plurality of lifting cords 15 hanging from the pulley position 5b is connected to the outdoor warp of the pair of front and rear warp threads of each ladder cord 2 at a position near the uppermost slat 3. .. Further, the other ends of the plurality of lifting cords 15 are attached to the tip end portion 143 of the movable rod 142 in one lifting cord movable device 14.

On the other hand, in the modified example shown in FIG. 2B, a plurality of lifting cord movable devices 14 corresponding to the number of support members 5 and a plurality of lifting cords 15 corresponding to the number of the plurality of lifting cord movable devices 14 Is used.

Then, one end of each of the plurality of lifting cords 15 is hung from the pulley position 5b provided near the outdoor end of each of the support members 5 arranged on the left and right sides and the center side of the head box 1. Each end of each of the plurality of lifting cords 15 hanging from the pulley position 5b is connected to the outdoor warp of the pair of front and rear warp threads of each ladder cord 2 at a position near the uppermost slat 3. .. Further, the other ends of the plurality of lifting cords 15 are attached to the tip portions 143 of the movable rod 142 in each of the plurality of lifting cord movable devices 14.

(Overall operation)
Hereinafter, the overall operation of the horizontal blind of the present embodiment shown in FIGS. 1 and 2 (a) will be described. 3A and 3B are side views showing an example of the overall operation of the horizontal blind according to the first embodiment of the present invention, respectively.

As shown in FIGS. 3A and 3B, in the horizontal blind of the present embodiment, a chamber of a pair of front and rear warp threads of the ladder cord 2 is provided by the locking member 16 at a position near the uppermost slat 3. One end of the lifting cord 15 is connected to the outer warp.

As shown in FIG. 2A, the other end of the lifting cord 15 is connected to the tip end portion 143 of the movable rod 142 in the lifting cord movable device 14, and exerts a predetermined pulling force on the lifting cord 15. It is caused (details will be described later).

Then, in FIG. 3A, the operation cord 7 and the cord equalizer 8 or the plurality of elevating cords 11 derived from the cord outlet 1a are operated to release the operation of the stopper device 13, and the slats 3 and the bottom rail 4 are displayed. It shows how the bottom rail 4 is descending based on its own weight.

The slat 3 during the lowering operation of the bottom rail 4 is in a horizontal state. The slat 3 related to this lowering operation assumes a case where the slat 3 is made horizontal in advance by the rotation operation of the tilt drum 51 before the lowering operation of the bottom rail 4.

However, as will be described in detail later, even when the slat 3 is in the positive shielding state (fully closed state) by the rotation operation of the tilt drum 51 before the lowering operation of the bottom rail 4, the lifting is configured by the linear motion damper. By the action of the cord movable device 14, each lifting cord 15 is pulled into the head box 1, and the slats 3 are regulated to be in a horizontal state.

Subsequently, when the bottom rail 4 reaches the lower limit position from the state shown in FIG. 3A, each lifting cord 15 is pulled out from the head box 1 by the lifting cord movable device 14, and the lifting cord 16 is pulled out from the head box 1. The warp of the ladder cord 2 connecting one end of the 15 moves downward. Then, as shown in FIG. 3B, all the slats 3 and the bottom rail 4 rotate to automatically enter the normal shielding state (fully closed state).

In this way, the lifting cord movable device 14 configured by the linear motion damper is configured to change the angles of the multi-stage slats 3 by pulling in or pulling out each lifting cord 15 from the head box 1. The transfer amount of the lifting cord 15 makes it possible to transition between a substantially horizontal state and a shielded state in the multi-stage slat 3.

Further, by selecting the transfer amount of the lifting cord 15, it is possible to select and set the slat angle that forms the shielding state in the multi-stage slat 3.

Hereinafter, a specific configuration of the lifting cord movable device 14 configured by the linear motion damper and its operation will be described in more detail.

(Suspension cord movable device)
FIG. 4 is a side view simply showing a schematic configuration of the lifting cord movable device 14 in the horizontal blind of the first embodiment according to the present invention and its operation when the bottom rail 4 is lowered.

As described above, in the horizontal blind of the present embodiment, the lifting cord 15 is attached to the outdoor warp of the pair of front and rear warp threads of the ladder cord 2 by the locking member 16 at a position near the uppermost slat 3. One end of is connected. Then, as shown in FIG. 4, the other end of the lifting cord 15 is connected to the tip end portion 143 of the movable rod 142 in the lifting cord movable device 14 configured by the linear motion damper.

In the main body case 141 of the lifting cord movable device 14, a compression spring 144 that always urges the movable rod 142 that moves linearly with a predetermined stroke amount in one direction is provided. The compression spring 144 exerts an urging force F1 that generates a predetermined pulling force on the lifting cord 15 even when the maximum stroke Smax of the movable rod 142 is reached.

Then, the slat 3 during the lowering operation of the bottom rail 4 is in a horizontal state. That is, during the lowering operation of the bottom rail 4, the movable rod 142 is in a state of the maximum stroke Smax due to the above-mentioned urging force F1. Therefore, when the slat 3 is made horizontal in advance by the rotation operation of the tilt drum 51 before the lowering operation of the bottom rail 4, or when the slat 3 is corrected by the rotation operation of the tilt drum 51 before the lowering operation of the bottom rail 4. When the hoisting cord 15 is in the shielded state (fully closed state), each hoisting cord 15 is pulled into the head box 1, and the warp yarn of the ladder cord 2 connecting the one end of the hoisting cord 15 is lifted by the locking member 16. Therefore, the slats 3 are regulated to be in a horizontal state.

That is, when there is a slat 3 folded on the bottom rail 4 as shown in FIG. 4, the weights of the slat 3 and the bottom rail 4 are mainly added to the plurality of elevating cords 11 and suspended by the locking member 16. Only the own weight of the slat 3 that is not folded on the bottom rail 4 is mainly added to the warp of the ladder cord 2 that connects one end of the upper cord 15, and at least the own weight of the bottom rail 4 is not added.

Therefore, the lifting cord movable device 14 configured by the linear motion damper does not always apply its own weight of the bottom rail 4 as a load applied to the warp threads of the ladder cord 2 during the lowering operation of the bottom rail 4. A pulling force that regulates the slats 3 to be in a horizontal state is applied to each lifting cord 15 to lift the warp threads of the ladder cord 2.

Subsequently, when the bottom rail 4 reaches the lower limit position from the state shown in FIG. 4, the weights of the slats 3 and the bottom rail 4 are mainly added to the warp threads of the pair of front and rear ladder cords 2, and the plurality of elevating cords 11 are almost unloaded. It becomes a state.

Then, as shown in FIG. 5, as the load of the warp of the ladder cord 2 connecting one end of the lifting cord 15 by the locking member 16 increases, a load exceeding the pulling force is applied to the lifting cord 15 and the suspension cord 15 moves linearly. The lifting cord movable device 14 configured by the damper operates so as to pull out each lifting cord 15 from the head box 1. At this time, the compression spring 144 in the lifting cord movable device 14 exerts an urging force F2 that generates a predetermined pulling force on the lifting cord 15 even when the minimum stroke of the movable rod 142 is Smin.

Then, when each of the lifting cords 15 is pulled out from the head box 1 by the lifting cord movable device 14, the warp threads of the ladder cord 2 connecting one end of the lifting cord 15 are moved downward by the locking member 16. As shown in 5, all the slats 3 and the bottom rail 4 rotate to automatically enter the normal shielding state (fully closed state).

On the other hand, when the raising operation is performed from the state where the bottom rail 4 is in the lower limit position, the load on the warp of the ladder cord 2 connecting one end of the lifting cord 15 by the locking member 16 is reduced, and the lifting cord 15 is said to be affected. Since the pulling force sufficient to lift the warp is restored, the lifting cord movable device 14 pulls each lifting cord 15 from the head box 1 and operates so that the slats 3 are in the horizontal state as shown in FIG. ..

The stroke amount S (= maximum stroke Smax-minimum stroke Smin) in the lifting cord movable device 14 configured by the linear motion damper corresponds to the transfer amount of the lifting cord 15, and therefore the lifting cord 15 By selecting the transfer amount (that is, selecting the stroke amount), it is possible to select and set the slat angle that forms the shielding state in the multi-stage slat 3.

Further, with respect to the lifting cord 15 attached to the tip end portion 143 of the movable rod 142, the pulling force F sufficient to lift the warp of the ladder cord 2 to be lifted is when the bottom rail 4 is in the lower limit position. Although it is smaller than the load Lmax applied to the lifting cord 15 of the above, the bottom rail 4 rises from the lower limit position and only the own weight of all slats 3 except the own weight of the bottom rail 4 is applied to the warp of the ladder cord 2 to be lifted. The load is set to be equal to or greater than the load Ls applied to the lifting cord 15.

That is, the urging force F1 at the maximum stroke Smax of the movable rod 142 in the compression spring 144 is smaller than the urging force F2 at the minimum stroke Smin, but both the urging forces F1 and F2 are smaller than the load Lmax and the load Ls. Set the threshold value so that it becomes the above.

In this way, the lifting cord movable device 14 configured by the linear motion damper is configured to change the angles of the multi-stage slats 3 by pulling in or pulling out each lifting cord 15 from the head box 1. The transfer amount of the lifting cord 15 makes it possible to transition between a substantially horizontal state and a shielded state in the multi-stage slat 3.

That is, the lifting cord movable device 14 composed of the linear motion damper makes the stroke amount of the movable rod 142 correspond to the transfer amount of the lifting cord 15, and the weight of the bottom rail 4 is applied as the load of the warp threads of the ladder cord 2. By using the value as a threshold value and constantly urging the main body case 141 in the lifting cord movable device 14 in one direction so as to change the relative position of the tip portion 143 of the movable rod 142, the slats 3 in multiple stages are substantially horizontal. It is configured to transition between the state and the shielded state.

More specifically, the pulling force generated by the lifting cord movable device 14 on the lifting cord 15 is when the load of the warp of the ladder cord 2 connecting the one end of the lifting cord 15 becomes less than a predetermined value. The warp threads can be lifted by the lifting cord 15, and the multi-stage slat 3 is set to transition from a shielded state to a substantially horizontal state.

Further, the pulling force generated by the lifting cord movable device 14 on the lifting cord 15 is lifted when the load of the warp threads of the ladder cord 2 connecting the one end of the lifting cord 15 becomes a predetermined value or more. It is set so that the warp yarn cannot be lifted by the cord 15 and the multi-stage slat 3 is transitioned from a substantially horizontal state to a shielded state.

As shown in FIG. 2, the horizontal blind configured in this way automatically shields the slat 3 in a positive shielding state at the end of the descent when the slat 3 is held horizontally and the bottom rail 4 is lowered to the lower limit position (all). When the slat 3 in the positive shielding state is raised from the lower limit position of the bottom rail 4 in the closed state), the slat 3 can be automatically changed to the horizontal state at the start of the rise.

Further, when the slat 3 is moved up and down by the pulling operation of the elevating cord 11, the interference between the slat 3 and the elevating cord 11 is reduced, and the slat 3 is smoothly lowered or the wear of the elevating cord 11 is reduced when the slat 3 is raised. It will be possible.

By the way, if the pulling operation of the elevating cord 11 is stopped, the stopper device 13 is activated to prevent the slat 3 and the bottom rail 4 from lowering their own weight, and if the operation of the stopper device 13 is released, the slat 3 and the bottom rail 4 are activated. Descends based on its own weight.

When the slat 3 is lowered by its own weight due to the weight of the bottom rail 4 and the slat 3 when the operation of the stopper device 13 is released, the elevating cord is provided in the head box 1 so that the slat 3 can be lowered at an appropriate speed. A speed adjusting device can be provided which limits the moving speed of the eleven and brakes the moving speed of the slats 3 when descending to a certain value or less. By providing this speed adjusting device, the bottom rail 4 and the slat 3 can be lowered by decelerating only when descending and exerting a braking force to decelerate.

Then, by combining the installation of such a speed adjusting device and the lifting cord movable device 14, when the bottom rail 4 and the slat 3 descend due to their own weight when the operation of the stopper device 13 is released, the descending sound and the bottom While reducing the collision noise of the rail 4 with the floor surface, the slat 3 can be automatically put into the positive shielding state (fully closed state) at the end of the descent.

[Second Embodiment]
(overall structure)
FIG. 6 is a front view showing a schematic configuration of a horizontal blind according to a second embodiment of the present invention. In FIG. 6, the same reference numbers are assigned to the same components as those in the first embodiment shown in FIG. In the horizontal blind of the present embodiment, a support member that rotatably supports a tilt drum 51 for suspending a pair of front and rear ladder cords 2 and a winding shaft 52 for winding or rewinding the elevating cord 11. 5 is arranged on both the left and right sides of the head box 1 and in the center thereof.

A multi-stage slat 3 is supported via the ladder cord 2, and a bottom rail 4 is suspended and supported at the lower end of each ladder cord 2. Further, a bottom rail 4 is attached to the lower end of each elevating cord 11.

Further, the drive shaft 12 is inserted into the tilt drum 51 and the take-up shaft 52 of each support member 5 so as not to rotate relative to each other.

When the drive shaft 12 is rotated, the tilt drum 51 is rotated, and the angles of the multi-stage slats 3 suspended and supported by the ladder cord 2 are adjusted. Further, when the drive shaft 12 is rotated, the angles of the multi-stage slats 3 are tilted in a direction substantially perpendicular to the horizontal direction, and then the lifting cord 11 is wound or rewound by the winding shaft 52. This is done, and the slats 3 can be raised and lowered by raising and lowering the bottom rail 4.

An operation pulley (not shown) for operating the rotation of the drive shaft 12 is housed on the right end side of the head box 1, and an endless operation code 20 mounted on the operation pulley is a head box 1. It hangs down from the outlet provided on the front surface on the right end side. Further, in the head box 1, a brake device 23 capable of locking the rotation of the drive shaft 12 is provided.

Therefore, by operating the operation cord 20, the rotation of the drive shaft 12 is operated, and the angle of the multi-stage slats 3 suspended and supported by the ladder cord 2 via the support member 5 can be adjusted. The elevating cord 11 can elevate and elevate the multi-stage slat 3.

Also in the horizontal blind of the present embodiment, one end of the lifting cord 15 is connected to the outdoor warp of the pair of front and rear warp threads of the ladder cord 2 by the locking member 16 at a position near the uppermost slat 3. Has been done. Further, the other end of the lifting cord 15 is connected to the tip end portion 143 of the movable rod 142 in the lifting cord movable device 14 as in the first embodiment, and a predetermined pulling force is applied to the lifting cord 15. It is causing it.

The arrangement of the lifting cord 15 and the lifting cord movable device 14 can be the same as in FIGS. 2 (a) and 2 (b).

Then, by operating the operation code 20, the bottom rail 4 is lowered based on the weights of the slats 3 and the bottom rail 4, and when the bottom rail 4 reaches the lower limit position, the lifting cord movable device is similarly used in the first embodiment. Each hoisting cord 15 is pulled out from the head box 1 by 14, and the warp of the rudder cord 2 connecting one end of the hoisting cord 15 is moved downward by the locking member 16, and all the slats 3 in the horizontal state and The bottom rail 4 rotates to automatically enter the normal shielding state (fully closed state).

Also in the present embodiment, as in the first embodiment, the slat angle that forms the shielding state in the multi-stage slat 3 can be selectively set by selecting the transfer amount of the lifting cord 15.

[Third Embodiment]
(overall structure)
FIG. 7 (a) is a plan view simply showing a schematic configuration in the head box 1 in the horizontal blind of the third embodiment according to the present invention as an example, and FIG. 7 (b) is a plan view showing a modified example thereof. ..

In the first and second embodiments described above, the slats 3 are made horizontal in advance by the rotation operation of the tilt drum 51 before the lowering operation of the bottom rail 4 or before the lowering operation of the bottom rail 4. It is assumed that the slats 3 are in the positive shielding state (fully closed state) by the rotation operation of the tilt drum 51 before the lowering operation of the rail 4.

That is, in the first and second embodiments described above, the slat 3 is brought into the reverse shielding state (reverse fully closed state) by the rotation operation of the tilt drum 51 before the lowering operation of the bottom rail 4, and the lowering operation of the bottom rail 4 is performed. As a function of the lifting cord movable device 14, the slats 3 are not operated to be horizontal during the lowering operation of the bottom rail 4.

Even in such a case, it is practical in that it is in a shielded state when the bottom rail 4 is lowered to the lower limit position, but the interference between the slat 3 and the elevating cord 11 is reduced, and the slat 3 is smoothly lowered. Alternatively, from the viewpoint of reducing wear of the elevating cord 11 when the slat 3 is ascended, it is desirable to constantly regulate the slat 3 so as to be held substantially horizontally and ascended and decreased.

Therefore, in the present embodiment, rather than automatically shielding the bottom rail 4 when it is lowered to the lower limit position, the slats 3 are always held substantially horizontally and regulated to move up and down.

More specifically, in the horizontal blind of the present embodiment, as shown in FIG. 8, a pair of front and rear ladder cords 2 (indoor side and outdoor side) are provided by the locking member 16 at a position near the uppermost slat 3. One end of each of the plurality of lifting cords 15 (lifting cords 15F and 15R shown in FIGS. 7 and 8) is connected to each of the warp threads of the above. A plurality of lifting cords 15 (lifting cords 15F shown in FIGS. 7 and 8) having one end connected to each warp on the indoor side, and a plurality of lifting cords 15 having one end connected to each warp on the outdoor side (15F). For each of the lifting cords 15R) shown in FIGS. 7 and 8, a plurality of lifting cord movable devices 14 for the indoor side and the outdoor side that generate a predetermined pulling force are provided.

Then, from the pulley positions 5a provided near the outdoor ends of the support members 5 on the left and right sides of the head box 1 and near the indoor ends of the support members 5 on the center side of the head box 1, a plurality of elevating cords 11 are used. Each end hangs down. Each end of each of the plurality of elevating cords 11 hanging from the pulley position 5a is attached to the bottom rail 4. On the other hand, the other ends of the plurality of elevating cords 11 are guided to the right in the head box 1 via the stopper device 13 and then from the cord outlet 1a to the outside, as in the first embodiment shown in FIG. And is connected to the cord equalizer 8. A pair of front and rear warp threads of the ladder cord 2 are hung on each support member 5.

Here, in the embodiment of the present embodiment shown in FIG. 7A, there are two lifting cord movable devices 14 and a plurality of lifting cords 15 (for indoor side and twice as many as the number of support members 5). Lifting cords 15F, 15R) for the outdoor side are used.

Each of the two lifting cord movable devices 14 for the indoor side and the outdoor side is configured as a linear motion damper, and is always urged in one direction with the main body case 141 as in the first embodiment. It is equipped with a movable rod 142 that can move linearly with the stroke amount of.

Then, each end of each of the plurality of lifting cords 15F for the indoor side is hung from the pulley position 5b provided near the indoor side end of each support member 5 arranged on the left and right sides and the center side of the head box 1. To. Similarly, each end of each of the plurality of lifting cords 15R for the outdoor side is hung from the pulley position 5b provided near the outdoor end portion of each support member 5.

Each end of the plurality of lifting cords 15F and 15R hanging from each pulley position 5b is located near the uppermost slat 3, and is connected to a pair of front and rear ladder cords 2 (indoor side and outdoor side) by a locking member 16. ) Is connected to each of the warp threads.

Further, at the tip 143 of the movable rod 142 in each of the two lifting cord movable devices 14 for the indoor side and the indoor side, a plurality of lifting cords 15F and 15R for the indoor side and the indoor side, respectively, etc. The ends are attached.

On the other hand, in the modified example shown in FIG. 7B, a plurality of lifting cord movable devices 14 corresponding to twice the number of support members 5 and a plurality of lifting cord movable devices 14 corresponding to the number of the plurality of lifting cord movable devices 14. Lifting cords 15 (lifting cords 15F and 15R for indoor and outdoor sides) are used.

Then, each end of each of the plurality of lifting cords 15F for the indoor side is hung from the pulley position 5b provided near the indoor side end of each support member 5 arranged on the left and right sides and the center side of the head box 1. To. Similarly, each end of each of the plurality of lifting cords 15R for the outdoor side is hung from the pulley position 5b provided near the outdoor end portion of each support member 5.

One end of each of the plurality of lifting cords 15F and 15R hanging from each pulley position 5b is located near the uppermost slat 3, and a pair of front and rear ladder cords 2 (indoor side and outdoor side) are provided by the locking member 16. ) Is connected to each of the warp threads.

Further, the other ends of the plurality of lifting cords 15F and 15R are attached to the tip 143 of the movable rod 142 in each of the plurality of lifting cord movable devices 14.

That is, in the third embodiment, as compared with the configuration of the first embodiment, it is only necessary to provide the lifting cord movable device 14 capable of lifting the warp threads of the ladder cord 2 on the outdoor side by the lifting cord 15R. The difference is that a lifting cord movable device 14 capable of lifting operation by the lifting cord 15F is provided for the warp threads of the ladder cord 2 on the indoor side.

The configuration of the lifting cord movable device 14 capable of lifting the warp of the ladder cord 2 on the outdoor side by the lifting cord 15R is the same as that in FIGS. 4 and 5, and in contrast to this, the indoor side By providing a lifting cord movable device 14 capable of lifting operation by the lifting cord 15F for the warp threads of the ladder cord 2 in the same configuration, the slats 3 are always held horizontally and regulated to move up and down. Become.

That is, as shown in FIGS. 8A and 8B, in the horizontal blind of the present embodiment, one end of each of the plurality of lifting cords 15F and 15R is locked at a position near the uppermost slat 3. The member 16 is connected to each of a pair of front and rear (indoor side and outdoor side) warp threads of the ladder cord 2.

As shown in FIG. 7A (or FIG. 7B), the other end of each lifting cord 15 is connected to the tip end portion 143 of the movable rod 142 in each lifting cord movable device 14, and the hanging is said. A predetermined pulling force is generated with respect to the upper cord 15.

Then, in FIG. 8A, the operation cord 7 and the cord equalizer 8 or the plurality of elevating cords 11 derived from the cord outlet 1a are operated to release the operation of the stopper device 13, and the slats 3 and the bottom rail 4 are displayed. It shows how the bottom rail 4 is descending based on its own weight.

The slats 3 during the lowering operation of the bottom rail 4 are regulated to be in a horizontal state by the action of the lifting cord movable devices 14 provided symmetrically on the indoor side and the outdoor side.

That is, even when the slats 3 are put into the normal shielding state (fully closed state) or the reverse shielding state (reverse closed state) by the rotation operation of the tilt drum 51 before the bottom rail 4 is lowered, the linear motion damper is used. The lifting cords 15F and 15R are pulled into the head box 1 by the action of each lifting cord movable device 14, and the slats 3 are regulated to be in a horizontal state.

Subsequently, the bottom rail 4 reaches the lower limit position from the state shown in FIG. 8A, and the lifting cords 15F and 15R are pulled out from the head box 1 by the lifting cord movable devices 14, and the locking member 16 is pulled out. Even if the warp of the ladder cord 2 connecting one end of the lifting cord 15 moves downward, the front-rear symmetry is maintained as shown in FIG. 8 (b), and all the slats 3 and the bottom rail 4 remain. It is kept horizontal.

When the slat 3 and the bottom rail 4 are raised, the slat 3 is similarly regulated to be in a horizontal state. Therefore, when the slat 3 in the shielded state is moved up and down from the lower limit position of the bottom rail 4 regardless of the forward / reverse shielded state, the slat 3 can be automatically changed to substantially horizontal.

In this way, it is possible to configure a horizontal blind that holds the slats 3 horizontally and allows them to move up and down with a relatively simple configuration. Then, the interference between the slat 3 and the elevating cord 11 is reduced, the slat 3 can be smoothly lowered, or the wear of the elevating cord 11 when the slat 3 is raised is reduced.

Further, also in the present embodiment, as in the first embodiment, the moving speed of the elevating cord 11 is limited in the head box 1 so that the slat 3 can be lowered at an appropriate speed when the slat 3 is lowered. A speed adjusting device for braking the moving speed of the above a certain value or less can be provided. By providing this speed adjusting device, the bottom rail 4 and the slat 3 can be lowered by decelerating only when descending and exerting a braking force to decelerate.

Then, by combining the installation of such a speed adjusting device and the lifting cord movable device 14, when the bottom rail 4 and the slat 3 are lowered by their own weight due to the release of the operation of the stopper device 13, the slat 3 is substantially horizontal. It is possible to reduce the descending sound of the slat 3 and the collision sound of the bottom rail 4 with the floor surface while restricting the state to the state.

Further, as a modification of the third embodiment, the tilt drum 51 for suspending the pair of front and rear ladder cords 2 and the elevating cord 11 are suspended so as to be rewound or rewound as in the second embodiment described above. Even in a horizontal blind in which the support members 5 that rotatably support the take-up shaft 52 are arranged on the left and right sides of the head box 1 and in the center thereof, the front-rear symmetry is maintained as in the present embodiment. By providing the lifting cords 15F and 15R and each lifting cord movable device 14, the slats 3 can be regulated to be in a horizontal state.

The same applies to the other embodiments described above, but even when the lifting cords 15F and 15R and the lifting cord movable device 14 are provided, the bottom rail 4 can be arbitrarily operated by rotating the drive shaft 12. The angle of the slat 3 can be adjusted at the position.

Although the present invention has been described above with reference to examples of specific embodiments, the present invention is not limited to the examples of the above-described embodiments, and various modifications can be made without departing from the technical idea. For example, in the example of each of the above-described embodiments, the example in which the lifting cord 15 is hung on all the support members 5 has been described, but the suspension cord 15 is provided only at the central position or in a symmetrical positional relationship with respect to the horizontal blind. It can also be configured as follows. Further, the position of the locking member 16 for connecting the end of the lifting cord 15 may be a position above the uppermost slat, in addition to being near the uppermost slat.

Further, the lifting cord movable device 14 may be a rotating or swinging damper, a spring, a rubber material, or the like that generates a pulling force of the lifting cord 15 in addition to the linear motion damper. By configuring it, there is an advantage that sudden operation can be prevented and it becomes compact.

Further, the lifting cord 15 includes a single cord or a cord composed of a plurality of cords via a repeater (transmission or the like).

According to the present invention, when the slats are held horizontally and the bottom rail is lowered to the lower limit position, the slats are automatically set to the positive shielding state, and when the slats in the positive shielding state are raised from the lower limit position of the bottom rail, the slats are automatically set to the positive shielding state. Since it is possible to configure a horizontal blind that shifts the slats to a horizontal state, or a horizontal blind that holds the slats horizontally and allows them to move up and down, the code quality can be maintained or operability caused by the raising and lowering operations of the slats. It is useful for horizontal blind applications where improvement is desired.

1 Headbox 2 Ladder cord 3 Slat 4 Bottom rail 5 Support member 11 Lifting cord 12 Drive shaft 14 Lifting cord movable device 15 Lifting cord 16 Locking member 51 Tilt drum 52 Winding shaft 141 Lifting cord movable device (linear motion damper) ) Body case 142 Movable rod 143 Movable rod tip 144 Compression spring

Claims (12)

The tilt drum rotatably supported in the head box supports the bottom rail together with the multi-stage slats via the ladder cord, and the tilt drum that rotates by the rotation operation of the drive shaft makes the multi-stage slats in the same phase. A horizontal blind that allows the angle to be adjusted and allows the multi-stage slats to be raised and lowered by the raising and lowering operation of the bottom rail by the lifting cord.
A lifting cord that connects one end to one of a pair of front and rear warp threads of a predetermined ladder cord,
A lifting cord movable device for connecting the other end of the lifting cord and generating a predetermined pulling force with respect to the lifting cord is provided .
The lifting cord is characterized that it is connected at a position near, or the position of the upper than the uppermost slat either to the uppermost slat among the front and rear of the warp of the predetermined ladder cord Horizontal blind. The hoisting cord movable device draws the lifting cord from the headbox, or by pulling, characterized in that it is configured to shift the angle of the slats of the plurality stages, according to claim 1 Horizontal blinds. According to claim 1 or 2 , the lifting cord movable device is configured to transition between a substantially horizontal state and a shielded state in the multi-stage slats depending on the amount of the lifting cord transferred. Described horizontal blinds. The hoisting cord movable apparatus, the selection of the transfer rate of the lifting cord, characterized in that said being selectably configure the slat angle formed shielding state in the slat multiple stages claims 1 to 3 The horizontal blind according to any one of the above. The horizontal type according to any one of claims 1 to 4 , further comprising a speed adjusting device for limiting the moving speed of the elevating cord and braking the moving speed of the slats when descending to a certain value or less. blind. The horizontal blind according to any one of claims 1 to 5 , wherein the lifting cord comprises a single cord or a plurality of cords via a repeater. The tilt drum rotatably supported in the head box supports the bottom rail together with the multi-stage slats via the ladder cord, and the tilt drum that rotates by the rotation operation of the drive shaft makes the multi-stage slats in the same phase. A horizontal blind that allows the angle to be adjusted and allows the multi-stage slats to be raised and lowered by the raising and lowering operation of the bottom rail by the lifting cord.
A lifting cord that connects one end to one of a pair of front and rear warp threads of a predetermined ladder cord,
A lifting cord movable device for connecting the other end of the lifting cord and generating a predetermined pulling force with respect to the lifting cord is provided.
The predetermined pulling force generated by the lifting cord movable device with respect to the lifting cord is obtained when the load of the warp threads of the predetermined ladder cord connecting one end of the lifting cord becomes less than a predetermined value. It said lifting cord according to allow the lifting of the warp yarns, you characterized in that it is configured to transition to a substantially horizontal state slats of said plurality stage from closing state horizontal blinds. The tilt drum rotatably supported in the head box supports the bottom rail together with the multi-stage slats via the ladder cord, and the tilt drum that rotates by the rotation operation of the drive shaft makes the multi-stage slats in the same phase. A horizontal blind that allows the angle to be adjusted and allows the multi-stage slats to be raised and lowered by the raising and lowering operation of the bottom rail by the lifting cord.
A lifting cord that connects one end to one of a pair of front and rear warp threads of a predetermined ladder cord,
A lifting cord movable device for connecting the other end of the lifting cord and generating a predetermined pulling force with respect to the lifting cord is provided.
The predetermined pulling force generated by the lifting cord movable device with respect to the lifting cord is obtained when the load of the warp threads of the predetermined ladder cord connecting one end of the lifting cord becomes a predetermined value or more. It said lifting cord according to impossible lifting of the warp yarns, you characterized in that it is configured to transition to the to multiple stages substantially shielded from a horizontal state state slats horizontal blinds. The tilt drum rotatably supported in the head box supports the bottom rail together with the multi-stage slats via the ladder cord, and the tilt drum that rotates by the rotation operation of the drive shaft makes the multi-stage slats in the same phase. A horizontal blind that allows the angle to be adjusted and allows the multi-stage slats to be raised and lowered by the raising and lowering operation of the bottom rail by the lifting cord.
A lifting cord that connects one end to one of a pair of front and rear warp threads of a predetermined ladder cord,
A lifting cord movable device for connecting the other end of the lifting cord and generating a predetermined pulling force with respect to the lifting cord is provided.
The lifting cord movable device is a linear damper having a urging means for urging in one direction or urging in one rotation direction in order to generate the predetermined pulling force with respect to the lifting cord. horizontal blinds characterized by comprising a rotary or oscillating damper having biasing means for. It said biasing means in the hoisting cord movable device is characterized in that it is configured to cause the predetermined pulling force corresponding to the weight of the bottom rail relative to the lifting cord, to claim 9 Described horizontal blinds. The tilt drum rotatably supported in the head box supports the bottom rail together with the multi-stage slats via the ladder cord, and the tilt drum that rotates by the rotation operation of the drive shaft makes the multi-stage slats in the same phase. A horizontal blind that allows the angle to be adjusted and allows the multi-stage slats to be raised and lowered by the raising and lowering operation of the bottom rail by the lifting cord.
A lifting cord that connects one end to one of a pair of front and rear warp threads of a predetermined ladder cord,
A lifting cord movable device for connecting the other end of the lifting cord and generating a predetermined pulling force with respect to the lifting cord is provided.
The lifting cord movable device comprises a linear motion damper having a urging means for urging a movable rod to which one end of the lifting cord is attached in one direction.
The stroke amount of the movable rod is made to correspond to the transfer amount of the lifting cord, and the relative position of the movable rod is changed with a value at which the weight of the bottom rail is applied as a load of the warp of the predetermined ladder cord as a threshold value. by always biased in one direction by the biasing means, horizontal blinds you, characterized in that it is configured to transition a substantially horizontal state and the shielding state at the slat of the plurality stages. The elevating cord is pulled out from the head box so that it can be pulled, or is attached to the take-up shaft so that it can be taken up or rewound by the take-up shaft that is rotated by the rotation operation of the drive shaft. The horizontal blind according to any one of claims 1 to 11 , characterized in that the blind is provided.