Masking device

Abstract

To provide an electric shielding device that electrically raises and lowers shielding material suspended and supported from a support based on the touch operation, and facilitates the charging work for the rechargeable power source, and provide an electric shielding device that can be also operated manually.SOLUTION: An electric shielding device of the present invention comprises a sensor (15) that detects the opening / closing direction of shielding material (6, 7) with touch operation, a motor 8 for opening and closing the shielding material, a control device 10 that controls the drive of the motor 8 so as to automatically open and close the shielding material based on the detection by the sensor, and a power source for supplying electric power to the sensor, the motor 8 and the control device 10 (in a preferred example, a rechargeable power source 11 that can be charged from the outside). Further, the electric shielding device of the present invention comprises urging means (constant load unit 16) for urging the shielding material in the ascending direction. The control device 10 has a control function of opening and closing the shielding material based on an operation signal from the outside or detection of forward / reverse rotation by the sensor, not limited to the touch operation.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a pleated screen, a horizontal blind, a lift curtain, a roll screen, etc. that can electrically control the opening and closing of a shielding material such as a screen, slats, or a curtain based on a touch operation, and particularly to an electric shielding device equipped with a rechargeable power source.

Background Art

[0002] In a shielding device such as a manual pleated screen, there are those that perform the raising and lowering of the shielding material by a handle operation. In particular, in order to stabilize the load when performing the raising and lowering of the shielding material by a handle operation, a shielding device provided with a constant load unit in the head box is known (see, for example, Patent Document 1).

[0003] On the other hand, in an electric shielding device, generally, a power source such as a wireless AC adapter is provided on a support body for suspending and supporting the shielding material (for example, a head box for a horizontal blind or a pleated screen, or a winding pipe supported by a mounting frame or a support member for a roll screen), and an AC cable extending from this AC adapter is often connected to an AC power outlet.

[0004] However, in this case, it is likely to look as if an AC cable is always hanging down from the electric shielding device, and there is room for improvement from the viewpoint of design.

[0005] In addition, as a type of electric shielding device, a power supply device equipped with a power supply unit using a rechargeable battery is configured by an elongated rod-shaped rod and can be removed from the main body of the electric shielding device (see, for example, Patent Document 2).

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

[0007] As described above, Patent Document 1 discloses that in a manually operated shielding device, a constant load unit is provided in the head box in order to stabilize the load when raising and lowering the shielding material by handle operation. However, it is necessary to always hold the handle and operate it, and there is room for improvement in operability.

[0008] On the other hand, as a type of electric shielding device, Patent Document 2 discloses a technique of using a power supply device configured by an elongated rod-shaped rod having a power supply unit powered by a rechargeable battery for the electric shielding device when the mounting position of the electric shielding device is high. However, when using the electric shielding device, it is essential to connect the electrical connection terminal at the tip of the rod to the main body, while when charging the power supply unit, it is essential to remove the rod from the main body of the electric shielding device in order to avoid damage to the electrical connection terminal at the tip of the rod, and there is a problem that it is not user-friendly.

[0009] In addition, in a general electric shielding device, there is a problem that the raising and lowering operation of the shielding material cannot be performed when there is no power supply such as during a power outage.

[0010] Therefore, a first object of the present invention is to provide an electric shielding device that, in view of the above problems, electrically raises and lowers a shielding material suspended from a support based on a touch operation, and facilitates the charging operation for a rechargeable power supply when configured to use a rechargeable power supply.

[0011] Another object of the present invention is to provide an electric shielding device that not only electrically raises and lowers the shielding material but also can be manually operated. [Means for Solving the Problems]

[0012] The electric shading device according to the present invention is an electric shading device that electrically opens and closes a shading material suspended from a support based on a touch operation, and includes a sensor that detects the opening and closing direction of the shading material by a touch operation, a motor for opening and closing the shading material, and a control device that controls the driving of the motor so as to automatically open and close the shading material until the movement of the shading material is blocked based on the detection of the opening and closing direction of the shading material by the sensor, and a power source for supplying power to the sensor, the motor, and the control device. The control device has a function of controlling so that the shielding material does not move up and down and the motor does not rotate in the case of an operation of a minute amount predetermined as a touch operation. It is characterized by that.

[0013] Further, the electric shading device according to the present invention is an electric shading device that electrically raises and lowers a shading material suspended from a support based on a touch operation, and includes a winding drum that winds up or winds back the other end of a lifting cord having one end attached to a rail located at the lower end of the shading material, a drive shaft inserted through the central axis of the winding drum so as not to be relatively rotatable, a biasing means that biases the rotation of the drive shaft in the winding direction of the lifting cord with a predetermined biasing force that prevents the shading material from automatically rising when not in operation, a sensor that detects the forward and reverse rotation of the drive shaft by a touch operation on the shading material, a motor for raising and lowering the shading material, a one-way clutch type transmission member that transmits only the rotation of the output shaft of the motor to the drive shaft, a control device that controls the driving of the motor so as to automatically raise and lower the shading material until the rotation of the drive shaft is blocked based on the detection of the forward and reverse rotation by the sensor, and a power source for supplying power to the sensor, the motor, and the control device. The control device has a function of controlling so that the shielding material does not move up and down and the motor does not rotate in the case of an operation of a minute amount predetermined as a touch operation. It is characterized by that.

[0014] Further, in the electric shading device according to the present invention, the power source is provided on the support, a charging connector that enables external charging of the power source is provided on a rail located at the lower end of the shading material, and a power supply cord that connects the power source and a power connection board having the charging connector is woven into a predetermined cord that hangs down from the head box to the rail on the back side of the shading material and hangs down. Charge It is characterized in that. Constituting the support It is characterized by being woven into a predetermined cord that hangs down from the head box to the rail on the back side of the shading material and hangs down.

[0015] Further, in the electric shielding device according to the present invention, the power source is provided on a rail located at the lower end of the shielding material, and a charging connector enabling external charging of the power source is provided on the Le -rail, and a power supply cord connecting the control device and the power source is woven into a predetermined cord that hangs down from the back side of the shielding material to the Constituting the support rail from the head box and is characterized by being hung down.

[0016] Further, in the electric shielding device according to the present invention, the power source is provided on the support, and a non-contact power receiving unit that receives power from a non-contact power supply device that performs non-contact power supply when the height of the Located at the lower end of the shielding material rail is at a predetermined height and supplies power to the power source is provided on the Le -rail, and a power supply cord connecting the power source and the non-contact power receiving unit is woven into a predetermined cord that hangs down from the back side of the shielding material to the Constituting the support rail from the head box and is characterized by being hung down.

[0017] Further, in the electric shielding device according to the present invention, the power source is provided on a rail located at the lower end of the shielding material, and a non-contact power receiving unit that receives power from a non-contact power supply device that performs non-contact power supply when the height of the rail is at a predetermined height and supplies power to the power source is provided on the Le -rail, and a power supply cord connecting the control device and the power source is woven into a predetermined cord that hangs down from the back side of the shielding material to the Constituting the support rail from the head box and is characterized by being hung down.

[0018] Further, in the electric shielding device according to the present invention, the control device includes means for monitoring the charging state of the power source, means for monitoring the height of the rail, and means for controlling the driving of the motor so as to lower and stop the rail to a predetermined height when the rail is at a position higher than the predetermined height when the charging state falls below a predetermined reference value.

[0019] Further, in the electric shielding device according to the present invention, the control device includes means for monitoring whether the power supply is fully charged in a state where the rail is lowered to the predetermined height, and after determining that the power supply is in the fully charged state, means for controlling the driving of the motor so as to return the rail to the original height before charging.

Advantages of the Invention

[0023] According to the present invention, since the lifting and lowering of the shielding material suspended and supported from the support based on the touch operation is electrically performed, the operability is improved, and when a rechargeable power supply is used, the charging operation for the rechargeable power supply is facilitated. Therefore, the limitation on the installation position of the shielding device can be relaxed. Further, the electric shielding device according to the present invention not only electrically performs the lifting and lowering of the shielding material but also can be manually operated, so that the convenience is improved.

Brief Description of the Drawings

[0024]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Embodiments for Carrying Out the Invention

[0025] Hereinafter, with reference to the drawings, the electric shielding device according to each embodiment of the present invention will be described. In the present specification, with respect to the front view of the electric pleated screen, which is an example of the electric shielding device shown in FIG. 1(b), the upper and lower directions in the drawing are defined as the upward (or upper side) and downward (or lower side) directions, and the left direction in the drawing is defined as the left side of the electric pleated screen, and the right direction in the drawing is defined as the right side of the electric pleated screen for explanation. Also, the side for visually recognizing the front view of FIG. 1 is defined as the front side (indoor side), and the opposite side is defined as the rear side (outdoor side).

[0026] 〔First Embodiment〕 (Overall Configuration) Figs. 1(a) and 1(b) are a plan view and a front view respectively showing the schematic configuration of an electric pleated screen as an electric shielding device according to the first embodiment of the present invention. Further, Fig. 2 is a side view showing the schematic configuration of the electric pleated screen as the electric shielding device according to the first embodiment of the present invention. The electric shielding device shown in Figs. 1 and 2 shows, as a representative example, an electric pleated screen that electrically raises and lowers a shielding material based on touch operation. However, the electric shielding device according to the present invention does not necessarily have to be limited to an electric pleated screen, and may be, for example, an electric horizontal blind or an electric lift curtain.

[0027] First, in the electric pleated screen according to the first embodiment shown in Figs. 1(a) and 1(b), a screen 6 that can be bent in a zigzag shape from a head box 1 is suspended and supported, and the lower end of the screen 6 is attached to the upper surface of a bottom rail 7. The head box 1 is fixed to an attachment surface such as a ceiling surface via a bracket 13.

[0028] Also, as shown in Fig. 2, a pitch holding cord 4 is suspended from the head box 1, the lower end of the pitch holding cord 4 is attached to the bottom rail 7, and annular holding portions 4a are provided at equal intervals with respect to the pitch holding cord 4. Each holding portion 4a inserts a lifting cord 3 that penetrates the screen 6 and supports the folds of the screen 6 so as to be regularly arranged.

[0029] A winding drum 2 is rotatably supported with respect to each support member 2a disposed at appropriate positions (in this example, two positions on the left and right) in the head box 1. And obstacle detection stop devices 2b are respectively provided at one axial end of the winding drum 2.

[0030] Note that the obstacle detection stop device 2b is configured to mechanically operate when the bottom rail 7 contacts an obstacle and its descent is hindered, and stop the rotation of the drive shaft 5A. Note that, in this embodiment, an example is shown in which the obstacle detection stop device 2b is provided in combination with the winding drum 2, but obstacle detection stop devices with various structures can be used, or the obstacle detection stop device 2b does not have to be provided.

[0031] On the take-up drum 2, the upper end of the lifting cord 3 (which is a cord-shaped cord in this example, but may also be a tape-shaped lifting tape) is attached so as to be windable or rewound, and the lower end of the lifting cord 3 penetrates the screen 6 and is attached to the bottom rail 7 in this example. The take-up drum 2 is formed such that its diameter gradually decreases toward one axial direction. In this example, the cord-shaped lifting cord 3 is sequentially wound around the take-up drum 2 in a spiral manner. As shown in FIG. 1(b), a handle 71 convenient for manually raising and lowering the shielding material (the screen 6 provided at the lower end of the bottom rail 7) is provided at the center in the left-right direction of the bottom rail 7.

[0032] The drive shaft 5A is inserted through the central axis of each take-up drum 2. On the other hand, a drive shaft 5B is provided in parallel with the drive shaft 5A.

[0033] One end of the drive shaft 5B is connected to the output shaft of the motor 8 via the drive shaft coupler 8a, and a one-way clutch type transmission member 9 is disposed on the other end side of the drive shaft 5B.

[0034] The transmission member 9 is a member having a one-way clutch function that does not transmit the rotation of the drive shaft 5A to the drive shaft 5B, but transmits only the rotation of the drive shaft 5B due to the rotation of the output shaft of the motor 8 to the drive shaft 5A. Specifically, the transmission member 9 in this example includes a first gear 91 whose central axis is connected to the drive shaft 5A in a non-rotatable manner relative to the drive shaft 5A, a second gear 92 that meshes with the first gear 91, and a one-way clutch portion 93 that is disposed on the central axis of the second gear 92 and is arranged so as to be included in the second gear 92. This one-way clutch portion 93 does not transmit the rotation of the drive shaft 5A to the drive shaft 5B, but transmits only the rotation of the drive shaft 5B to the drive shaft 5A. Therefore, the transmission member 9 rotates the drive shaft 5B in the reverse and forward directions with the driving force of the motor 8, and transmits the rotation in the reverse and forward directions to the drive shaft 5A (in this example, the reverse rotation is transmitted from the drive shaft 5B to the drive shaft 5A as forward rotation, and the forward rotation is transmitted as reverse rotation, but a configuration that transmits rotation in the same direction may also be used). Based on the forward and reverse rotation of this drive shaft 5A, the lifting cord 3 is wound or rewound by the winding drum 2, so that the bottom rail 7 can be lifted and lowered, and thereby the screen 6 can be lifted and lowered.

[0035] In addition, in the pleated screen of this embodiment, when the operator uses the handle 71 to perform a touch operation of slightly manually operating the upward or downward movement of the bottom rail 7, the opening and closing direction (in this example, the lifting and lowering direction) of the bottom rail 7 due to the touch operation is detected, and based on the detection of the lifting and lowering direction of the screen 6, the shielding material (the screen 6 provided with the bottom rail 7 at the lower end) is automatically opened and closed (in this example, automatically lifted and lowered) until the movement of the screen 6 is blocked.

[0036] For this reason, an encoder 15 that functions as a rotation detection sensor for detecting the presence or absence of rotation and the amount of rotation is provided on the drive shaft 5A. The presence or absence of rotation of the drive shaft 5A can detect the lifting and lowering direction of the screen 6 due to the touch operation, and the height of the bottom rail 7 can be monitored by detecting the amount of rotation of the drive shaft 5A. And as described above, the rotation of the drive shaft 5A due to the touch operation is not transmitted to the drive shaft 5B by the one-way clutch type transmission member 9.

[0037] Also, on the drive shaft 5A, there is provided a biasing means for biasing a shielding material (screen 6 provided with a bottom rail 7 at the lower end) with a predetermined biasing force so that it does not automatically rise during non-operation (in this example, biasing the rotation of the drive shaft 5A in the winding direction of the lifting cord 3). In this example, a constant load unit 16 is provided. In this embodiment, an example of providing the constant load unit 16 disclosed in Patent Document 1 is shown, but a constant load unit with another structure may also be used, or instead of the constant load unit, it may be configured with a clock spring or a spring motor.

[0038] Also, although not shown, a mechanism for applying a constant braking force to the movement of the lifting cord 3 is provided in the vicinity of the hanging position of the lifting cord 3 on the winding drum 2, thereby preventing the bottom rail 7 from descending due to its own weight. As a means for preventing the bottom rail 7 from descending due to its own weight, instead of applying a constant braking force to the movement of the lifting cord 3, a configuration may be provided in which a mechanism for applying a constant braking force to the rotation of the drive shaft 5A is provided. When the biasing means such as the constant load unit, the clock spring, or the spring motor has a function of preventing the bottom rail 7 from descending due to its own weight, the mechanism for applying the constant braking force can be omitted.

[0039] Therefore, the height of the bottom rail 7 does not automatically rise and does not descend due to its own weight in a state where there is no manual operation by the operator and no rotational drive of the drive shaft 5A via the drive shaft 5B by the motor 8.

[0040] The drive control of the motor 8 is performed by a control device 10 disposed in the head box 1. Note that the control device 10 can be configured by a microcomputer. A program for realizing each means of the control device 10 is stored in a predetermined memory (not shown) in the microcomputer. A program describing the processing content for realizing each means of the control device 10 by the microcomputer can be appropriately read from the predetermined memory to realize the functions of the control device 10. Further, in the present embodiment, a rechargeable power source (rechargeable battery) 11 that can be charged from the outside and supplies power to the encoder 15, the motor 8, and the control device 10 is disposed in the head box 1.

[0041] Incidentally, in the present embodiment, the upper limit position and the lower limit position of the bottom rail 7 are described as being determined by whether or not they can physically move. However, the control device 10 can also be configured to preset the count value of the pulses based on the output of the corresponding encoder 15 for the upper limit position and the lower limit position of the bottom rail 7, store and hold the preset count value in the predetermined memory, and electrically manage the upper limit position and the lower limit position of the bottom rail 7.

[0042] A charging connector substrate 18 having a charging connector 18a for charging from the outside is disposed in the bottom rail 7. Then, as shown in FIG. 2, a power supply cord 17 (in this example, a power supply cord for supplying power for charging the rechargeable power source 11) that electrically connects the rechargeable power source 11 and the charging connector substrate 18 is woven into a pitch holding cord 4 that hangs from the head box 1 to the bottom rail 7 on the back side of the screen 6. Thereby, regardless of the height of the bottom rail 7, the power supply cord 17 cannot be visually recognized from the front side of the screen 6, and the design property is improved.

[0043] The control device 10 monitors the pulse signal from the encoder 15, detects the presence or absence of a touch operation and the lifting and lowering direction of the bottom rail 7 due to the touch operation, and based on the detection of the lifting and lowering direction of the bottom rail 7, controls the drive of the motor 8 so as to automatically lift and lower the bottom rail 7 until the movement of the bottom rail 7 is blocked. Thereby, the operator can automatically lift and lower the shielding material (the screen 6 provided with the bottom rail 7 at the lower end) in the desired direction with a slight touch operation on the handle 71, and can stop the automatic lifting and lowering of the shielding material (the screen 6 provided with the bottom rail 7 at the lower end) at the desired position.

[0044] Further, the control device 10 monitors whether the charging state of the rechargeable power source 11 is below a predetermined reference value, and when it is below the predetermined reference value, determines whether the current height of the bottom rail 7 is higher than a predetermined height (for example, about 1 m from the floor surface where many operators can reach) at which external charging is possible, and has a function of driving the motor 8 to lower the height of the bottom rail 7 to the predetermined height when it is higher than the predetermined height. Thereby, the operator can easily perform the charging operation on the rechargeable power source 11. Also, even when the charging state of the rechargeable power source 11 is below the predetermined reference value and the power storage state is insufficient to drive the motor 8, manual operation by the operator is possible as described above, and it functions like a manually operated lifting and lowering type pleated screen.

[0045] FIG. 3 is a block diagram simply showing the schematic configuration of an electric pleated screen as an electric shielding device according to the first embodiment of the present invention. In the example shown in FIG. 3, a charging connector 18a provided on the charging connector board 18 is exposed from below the bottom rail 7 (or may be from the side, front, or rear), and can be electrically connected to a connection connector 20a at one end of the charging cord 20. A connection connector 20b at the other end of the charging cord 20 can be connected to an output terminal 30a of the AC adapter 30. Therefore, if the height of the bottom rail 7 is a predetermined height at which external charging is possible (for example, a height of about 1 m from the floor surface where many operators can reach), the input terminal (not shown) of the AC adapter 30 is connected to an AC power outlet, and it is possible to charge the rechargeable power source 11 from the AC adapter 30 via the energization cord 17.

[0046] (Control operation of the control device) Hereinafter, more specifically, the control operation of the control device 10 will be described. FIG. 4 is a flowchart showing a control example of the control device 10 in the electric shielding device according to the first embodiment of the present invention. FIGS. 5(a) to (c) are diagrams showing operation examples when the shielding material (the screen 6 provided with the bottom rail 7 at the lower end) in the electric shielding device according to the first embodiment of the present invention is raised, and FIGS. 6(a) and (b) are diagrams showing operation examples during charging of the rechargeable power source 11.

[0047] First, as a charging state monitoring means for the rechargeable power source 11, the control device 10 constantly monitors whether the charging state of the rechargeable power source 11 is below a predetermined reference value (step S1).

[0048] When the charging state of the rechargeable power source 11 is not below the predetermined reference value (step S1: N), the control device 10 monitors the forward and reverse rotation of the drive shaft 5A based on the output of the encoder 15 as a rotation detection monitoring means for monitoring the output of the encoder 15 functioning as a rotation detection sensor (step S2).

[0049] While the control device 10 does not detect the rotation of the drive shaft 5A, it determines that there is no touch operation (step S3: N), and proceeds to step S1 to continuously operate the charging state monitoring means of the rechargeable power supply 11 and the rotation detection monitoring means for monitoring the output of the encoder 15 that functions as a rotation detection sensor.

[0050] On the other hand, when the control device 10 detects the rotation of the drive shaft 5A, it determines that there is a touch operation (step S3: Y), detects the lifting direction of the bottom rail 7 due to the touch operation, and starts driving the motor 8 so as to rotate the drive shaft 5A via the drive shaft 5B in the rotation direction of the drive shaft 5A due to the touch operation (step S4).

[0051] At this time, based on the output of the encoder 15, the control device 10 monitors whether the shielding material (the screen 6 provided with the bottom rail 7 at the lower end) is at the upper limit position or the lower limit position, and whether the rotation of the drive shaft 5A is physically or electrically blocked (step S5). While the rotation of the drive shaft 5A is not blocked (step S5: N), the driving of the motor 8 is continued. For this reason, the operator can automatically raise and lower the shielding material (the screen 6 provided with the bottom rail 7 at the lower end) in the desired direction with a slight touch operation on the handle 71.

[0052] Also, during the driving of the motor 8, when the shielding material (the screen 6 provided with the bottom rail 7 at the lower end) reaches the upper limit position or the lower limit position, or when the movement of the bottom rail 7 is physically blocked by a touch stop to stop the movement of the handle 71 or the like by the operator, that is, when it is detected that the rotation of the drive shaft 5A is blocked based on the output of the encoder 15 (step S5: Y), the control device 10 stops the driving of the motor 8 (step S6) and proceeds to step S1 to continuously operate the charging state monitoring means of the rechargeable power supply 11 and the rotation detection monitoring means for monitoring the output of the encoder 15 that functions as a rotation detection sensor. For this reason, the operator can stop the automatic raising and lowering of the shielding material (the screen 6 provided with the bottom rail 7 at the lower end) at the desired position.

[0053] For example, as shown in Fig. 5(a), when the operator manually touches the handle 71 to slightly raise the bottom rail 7, the drive shaft 5A rotates. Therefore, the control device 10 can detect the rotation of the drive shaft 5A based on the output of the encoder 15. Then, using this touch operation as a trigger, the control device 10 can automatically raise the shielding material (screen 6 provided with the bottom rail 7 at the lower end) in the desired direction.

[0054] Also, during the driving of the motor 8, when the shielding material (screen 6 provided with the bottom rail 7 at the lower end) reaches the upper limit position or the lower limit position as shown in Fig. 5(b), or when the movement of the handle 71 or the like by the operator's manual touch stop as shown in Fig. 5(c) physically blocks the movement of the bottom rail 7, the control device 10 stops the driving of the motor 8.

[0055] Also, as shown in Fig. 4, as a charging state monitoring means for the rechargeable power source 11, the control device 10 constantly monitors whether the charging state of the rechargeable power source 11 is below a predetermined reference value (step S1). When the charging state of the rechargeable power source 11 is below the predetermined reference value (step S1: Y), first, it is determined whether the current height of the bottom rail 7 is higher than a predetermined height at which external charging is possible (for example, a height of about 1 m from the floor surface where many operators can reach) (step S7). When the control device 10 determines that the current height of the bottom rail 7 is below the predetermined height (step S7: N), it proceeds to step S9.

[0056] On the other hand, when the control device 10 determines that the current height of the bottom rail 7 is higher than the predetermined height (step S7: Y), it drives the motor 8 to lower the height of the bottom rail 7 to the predetermined height, and stops the driving of the motor 8 when the height of the bottom rail 7 becomes below the predetermined height (step S8).

[0057] Subsequently, when the current height of the bottom rail 7 is equal to or lower than the predetermined height, as a function of the charging state monitoring means of the rechargeable power source 11, the control device 10 monitors whether the rechargeable power source 11 is in a fully charged state (step S9). When the rechargeable power source 11 is not in a fully charged state (step S9: N), the process proceeds to step S7 to allow manual operation by the operator. When the rechargeable power source 11 reaches a fully charged state (step S9: Y), the process proceeds to step S1. As a result, the charging operation for the rechargeable power source 11 is facilitated.

[0058] For example, as shown in FIG. 6(a), when the current height H of the bottom rail 7 is at a predetermined height h (for example, a height of about 1 m from the floor surface FL where most operators can reach) from the floor surface FL, the control device 10 drives the motor 8 to lower the height of the bottom rail 7 to the predetermined height h as shown in FIG. 6(b), and stops driving the motor 8 when the height of the bottom rail 7 becomes equal to or lower than the predetermined height h. Thereby, the operator electrically connects the connection connector 20a at one end of the charging cord 20 to the charging connector 18a (see FIG. 3) of the charging connector board 18 provided on the bottom rail 7, and connects the output terminal 30a of the AC adapter 30 to the connection connector 20b at the other end of the charging cord 20. By connecting the input terminal (not shown) of the AC adapter 30 to an AC power outlet, it becomes possible to charge the rechargeable power source 11 from the AC adapter 30 via the energization cord 17.

[0059] (Modification example) In addition, in the example of the first embodiment shown in FIGS. 1 to 3, an example in which the rechargeable power source 11 is provided in the head box 1, the charging connector board 18 is provided in the bottom rail 7, and the rechargeable power source 11 and the charging connector board 18 are electrically connected by the energization cord 17 has been described. As a modification of this, as shown in FIG. 7, the rechargeable power source 11 may be provided in the bottom rail 7. FIG. 7 is a block diagram schematically showing a modified example of the electric pleated screen as the electric shielding device according to the first embodiment of the present invention.

[0060] As shown in Fig. 7, with the rechargeable power source 11 and the charging connector board 18 electrically connected, they can be provided together in the bottom rail 7, and the control device 10 and the rechargeable power source 11 disposed in the head box 1 can be electrically connected by the energization cord 17. Also in this case, it is preferable that the energization cord 17 is woven into the pitch holding cord 4 that hangs down from the head box 1 to the bottom rail 7 on the back side of the screen 6.

[0061] Further, in the first embodiment shown in Figs. 1 to 3 and the modification thereof shown in Fig. 7, although the energization cord 17 has been described as being woven into the pitch holding cord 4, it may be woven into the elevating cord 3. For example, when configured as an electric horizontal blind, an electric lift curtain, or the like as the electric shielding device according to the present invention, by weaving the energization cord 17 into the elevating cord, regardless of the height of the bottom rail 7, the energization cord 17 becomes invisible from the front side of the screen 6, and the design property is improved.

[0062] In addition, as an electric shielding device according to the present invention, it can also be configured as an electric roller screen. When configured as an electric roller screen, a lifting cord is not used, and the screen itself, which is configured as a shielding material, is wound or rewound by a long winding pipe. In a support body that supports this winding pipe from the outside or from the inside of its axis center, a rotation detection sensor that detects the rotation of a winding drum that functionally corresponds to the above-described encoder 15, a motor 8, and a control device 10, a motor that controls the rotation of the winding drum, and a control device that controls these may be provided. Further, a charging connector board 18 described above is provided on a rail provided at the lower end of the screen (in a roller screen, it is often referred to as a weight bar or a bottom bar, but here it is collectively referred to as a "rail"). The rechargeable power supply 11 is provided inside the support body or inside the rail, and an energizing cord 17 is disposed on the back side of the screen between the support body and the rail. By winding the energizing cord 17 as the screen is wound, the energizing cord 17 becomes invisible from the front side of the screen regardless of the height of the rail, and the design property is improved.

[0063] 〔Second Embodiment〕 FIG. 8 is a block diagram simply showing a schematic configuration of an electric pleated screen as an electric shielding device according to the second embodiment of the present invention. FIG. 9 is a flowchart showing a control example of the control device 10 in the electric shielding device according to the second embodiment of the present invention, and FIG. 10 is a diagram showing an operation example during charging. In addition, the same reference numerals are assigned to the same components as those in the first embodiment.

[0064] The electric pleated screen according to the second embodiment shown in FIG. 8, as compared with the electric pleated screen according to the first embodiment shown in FIGS. 1 to 3, and particularly as understood in comparison with FIG. 3, instead of providing a charging connector substrate 18 for charging via an AC adapter 30 in the bottom rail 7, a non-contact power receiving unit 19 is provided, and instead of charging via the AC adapter 30, it is provided with respect to the side wall W (it may also be on the floor surface FL), and a non-contact power feeding device 21 is provided. Also, as a preferred example, some functions (step S10) shown in FIG. 9 are added to the control of the control device 10 shown in FIG. 4. However, other configurations are the same.

[0065] The non-contact power receiving unit 19 is a functional unit that supplies power to the rechargeable power source 11 via the power supply cord 17 when it is within the range capable of receiving power from the non-contact power feeding device 21 that performs non-contact power feeding.

[0066] Still, as a modification of the second embodiment shown in FIG. 8, similar to the modification of the first embodiment shown in FIG. 7 described above, the rechargeable power source 11 can be provided in the bottom rail 7, and the control device 10 disposed in the head box 1 and the rechargeable power source 11 can be electrically connected by the power supply cord 17.

[0067] Even in the configuration where the non-contact power receiving unit 19 is provided in the bottom rail 7 as in the second embodiment shown in FIG. 8, all the advantages of the first embodiment can be included, and the control of the control device 10 itself may remain as the control example shown in FIG. 4. That is, in the second embodiment, when the height of the bottom rail 7 is at a predetermined height h from the floor surface FL (for example, about 1 m from the floor surface where many operators can reach), assuming that the non-contact power receiving unit 19 can receive power from the non-contact power feeding device 21, the control device 10 performs control.

[0068] However, in the control example shown in FIG. 9, as a preferred example, when the current height of the bottom rail 7 is equal to or less than the predetermined height, as a function of the charging state monitoring means of the rechargeable power source 11, the control device 10 monitors whether the rechargeable power source 11 is in a fully charged state (step S9). When the rechargeable power source 11 is not in a fully charged state (step S9: N), the process proceeds to step S7 to allow manual operation by the operator. This is the same as in the first embodiment. However, when the rechargeable power source 11 becomes fully charged (step S9: Y), the control device 10 controls the motor 8 to drive the bottom rail 7 back to its original height before charging (step S10). When the height of the bottom rail 7 returns to its original height before charging, the driving of the motor 8 is stopped, and the process proceeds to step S1. Incidentally, after the start of the control in step S10, until the height of the bottom rail 7 returns to its original height before charging, the control device 10 also performs control to monitor the presence or absence of a touch operation via steps S1 to S3, and performs control that prioritizes the touch operation. Therefore, compared with the first embodiment, the charging operation for the rechargeable power source 11 is further facilitated, and since it is assumed that the bottom rail 7 is normally returned to its original height after full charging, the operation burden on the operator can be reduced.

[0069] For example, as shown in FIG. 10(a), when the current height H of the bottom rail 7 is at a predetermined height h from the floor surface FL (for example, a height of about 1 m from the floor surface where most operators can reach), and the non-contact power receiving unit 19 is in a state where it cannot receive power from the non-contact power supply device 21, the control device 10 drives the motor 8 to lower the height of the bottom rail 7 to the predetermined height h as shown in FIG. 10(b). When the height of the bottom rail 7 becomes equal to or less than the predetermined height h, the driving of the motor 8 is stopped. As a result, the non-contact power receiving unit 19 can receive power from the non-contact power supply device 21, and it becomes possible to charge the rechargeable power source 11 via the power supply cord 17 without disturbing the operator's work.

[0070] Further, when the charging of the rechargeable power source 11 is completed, as shown in FIG. 10(c), the control device 10 controls to drive the motor 8 so as to return the height of the bottom rail 7 to the original height before charging, and stops the drive of the motor 8 when the height of the bottom rail 7 returns to the original height before charging. For this reason, since it is normally assumed that the bottom rail 7 is returned to the original height after full charging, the operation burden on the operator can be reduced. Further, after the control of step S10 is started, until the height of the bottom rail 7 returns to the original height before charging, since the touch operation is prioritized, the operator can perform a touch operation related to stopping or raising / lowering the shielding material as desired.

[0071] In addition, the control of step S10 shown in FIG. 9 is an effective control when a non-contact power receiving unit 19 is provided on the bottom rail 8 as in the second embodiment shown in FIG. 8. However, the control of step S10 shown in FIG. 9 is also applicable when a charging connector substrate 18 having a charging connector 18a is provided on the bottom rail 8 as in the first embodiment. In this case, for example, when the control device 10 controls the drive of the motor 8 so as to return the height of the bottom rail 7 to the original height before charging after the charging of the rechargeable power source 11 is completed, the motor 8 is driven so that the bottom rail 7 rises slowly. Thereby, the operator can grasp the completion of charging and can disconnect the connection between the charging connector 18a and the connection connector 20a of the charging cord 20 without haste.

[0072] 〔Third Embodiment〕 FIG. 11 is a front view showing a schematic configuration of an electric pleated screen as an electric shielding device according to the third embodiment of the present invention, and FIG. 12 is a block diagram simply showing the schematic configuration. Note that the same reference numerals are assigned to the same components as in the first and second embodiments.

[0073] The electric pleated screen according to the third embodiment shown in FIGS. 11 and 12 shows an electric pleated screen that electrically raises and lowers each shielding material based on a touch operation when there are two upper and lower shielding materials.

[0074] In the electric pleated screen according to the third embodiment shown in FIGS. 11 and 12, an upper screen 6U that can be bent in a zigzag shape from a head box 1 is suspended and supported, and the lower end of the upper screen 6U is attached to the upper surface of an intermediate rail 7U. The head box 1 is fixed to a mounting surface such as a ceiling surface via a bracket 13.

[0075] Furthermore, in the electric pleated screen according to the third embodiment shown in FIGS. 11 and 12, a lower screen 6L that can be bent in a zigzag shape from the intermediate rail 7U is suspended and supported, and the lower end of the lower screen 6L is attached to the upper surface of a bottom rail 7.

[0076] Although not shown, an upper pitch holding cord that functions in the same manner as the pitch holding cord 4 shown in FIG. 2 is suspended from the head box 1. The lower end of the upper pitch holding cord is attached to the intermediate rail 7U, and annular holding portions are provided at equal intervals on the upper pitch holding cord. Each holding portion of the upper pitch holding cord passes through a lifting cord 3U that penetrates the upper screen 6U and supports the folds of the upper screen 6U to be arranged regularly.

[0077] Also, although not shown, a lower pitch holding cord that functions in the same manner as the pitch holding cord 4 shown in FIG. 2 is suspended from the intermediate rail 7U. The lower end of the lower pitch holding cord is attached to the bottom rail 7, and annular holding portions are provided at equal intervals on the lower pitch holding cord. Each holding portion of the lower pitch holding cord passes through a lifting cord 3 that penetrates the upper screen 6U and the lower screen 6L and supports the folds of the lower screen 6L to be arranged regularly.

[0078] For each of the support members 2a disposed at appropriate positions (in this example, two positions on the left and right) within the head box 1, a winding drum 2 for winding or rewinding the lifting cord 3 for lifting and lowering the bottom rail 7, and a winding drum 2U for winding or rewinding the lifting cord 3U for lifting and lowering the intermediate rail 7U are rotatably supported. And at one axial end of each of the winding drums 2, 2U, the above-described obstacle detection stop device 2b is provided respectively.

[0079] In addition, at the central portion in the left-right direction of the bottom rail 7, a handle 71 convenient for manually raising and lowering the shielding material (lower screen 6L provided at the lower end of the bottom rail 7) is provided. Also, at the central portion in the left-right direction of the intermediate rail 7U, a handle 72 convenient for manually raising and lowering the shielding material (upper screen 6U provided at the lower end of the intermediate rail 7U) is provided.

[0080] Similar to the first embodiment, a drive shaft 5A is inserted through the central axis of each winding drum 2 related to the lifting and lowering of the bottom rail 7, and a drive shaft 5B is provided parallel to the drive shaft 5A. And similar to the first embodiment, one end of the drive shaft 5B is connected to the output shaft of the motor 8 via a drive shaft coupler 8a, and a one-way clutch type transmission member 9 is disposed on the other end side of the drive shaft 5B. The transmission member 9 is configured in the same manner as in the first embodiment, and has a one-way clutch function that does not transmit the rotation of the drive shaft 5A to the drive shaft 5B, but only transmits the rotation of the drive shaft 5B due to the rotation of the output shaft of the motor 8 to the drive shaft 5A.

[0081] Also, similar to the first embodiment, an encoder 15 that functions as a rotation detection sensor for detecting the presence or absence of rotation and the amount of rotation is provided on the drive shaft 5A related to the lifting and lowering of the bottom rail 7. By the presence or absence of rotation of the drive shaft 5A, the lifting and lowering direction of the lower screen 6L by touch operation can be detected, and by detecting the amount of rotation of the drive shaft 5A, the height of the bottom rail 7 can be monitored. And as described above, the rotation of the drive shaft 5A by touch operation is not transmitted to the drive shaft 5B by the one-way clutch type transmission member 9.

[0082] Also, on the drive shaft 5A, a biasing means that biases a shielding material (lower screen 6L provided with the bottom rail 7 at the lower end) with a predetermined biasing force so that it does not automatically rise during non-operation (in this example, biases the rotation of the drive shaft 5A in the winding direction of the lifting cord 3) is provided. In this example, a constant load unit 16 is provided. In this embodiment, an example in which the constant load unit 16 disclosed in Patent Document 1 is provided is shown, but a constant load unit with another structure may be used, or instead of the constant load unit, it may be configured with a winding spring or a spring motor.

[0083] Also, although not shown, a mechanism that applies a constant braking force to the movement of the lifting cord 3 is provided near the hanging position of the lifting cord 3 on the winding drum 2, thereby preventing the bottom rail 7 from descending due to its own weight. As a means for preventing the bottom rail 7 from descending due to its own weight, instead of applying a constant braking force to the movement of the lifting cord 3, a configuration may be adopted in which a mechanism that applies a constant braking force to the rotation of the drive shaft 5A is provided. In addition, when a biasing means such as a constant load unit, a winding spring, or a spring motor has a function of preventing the bottom rail 7 from descending due to its own weight, the mechanism for applying the constant braking force can be omitted.

[0084] In this embodiment, as shown in FIG. 12, components corresponding to each of the biasing means such as the winding drum 2 for the lifting cord 3 related to the lifting of the bottom rail 7, drive shafts 5A and 5B, motor 8, encoder 15, and constant load unit 16, which are configured in the same manner as in the first embodiment, are also provided for the lifting of the intermediate rail 7U. That is, biasing means such as a winding drum 2U for the lifting cord 3U, drive shafts 5AU and 5BU, motor 8U, encoder 15U, and constant load unit 16U are provided in the head box 1.

[0085] Therefore, the height of the bottom rail 7 will neither automatically rise nor drop by its own weight when there is no manual operation by the operator and no rotational drive of the drive shaft 5A via the drive shaft 5B by the motor 8. Similarly, the height of the intermediate rail 7U will neither automatically rise nor drop by its own weight when there is no manual operation by the operator and no rotational drive of the drive shaft 5AU via the drive shaft 5BU by the motor 8U.

[0086] In the electric pleated screen of this embodiment configured as described above, if the intermediate rail 7U is pulled up directly below the head box 1 and the bottom rail 7 is lowered with the upper screen 6U folded between the head box 1 and the intermediate rail 7U, the lower screen 6L will be suspended and supported from the head box 1.

[0087] Also, when the bottom rail 7 is lowered to the lower limit position and the intermediate rail 7U is lowered onto the bottom rail 7, the lower screen 6L will be folded between the intermediate rail 7U and the bottom rail 7, and the upper screen 6U will be suspended and supported between the head box 1 and the intermediate rail 7U. Therefore, for example, if the upper screen 6U is made of a light-transmissive fabric and the lower screen 6L is made of a light-blocking fabric, the degree of freedom in adjusting the amount of light received can be increased.

[0088] And if the bottom rail 7 is lowered to the lower limit position and the intermediate rail 7U is positioned midway between the head box 1 and the bottom rail 7, soft light transmitted through the upper screen 6U made of a light-transmissive fabric can be received.

[0089] Also, when the bottom rail 7 is pulled up and opened to the upper limit, the bottom rail 7 can be pulled up together with the intermediate rail 7U, and the upper screen 6U and the lower screen 6L can be folded between the head box 1 and the bottom rail 7.

[0090] Also in the present embodiment, the upper limit position and the lower limit position of each of the intermediate rail 7U and the bottom rail 7 related to the upper and lower shielding materials will be described as being determined by whether or not they can physically move. However, the control device 10 can be configured to preset the count value of the pulses based on the outputs of the corresponding encoders 15U and 15 for the upper limit position and the lower limit position of each of the intermediate rail 7U and the bottom rail 7, hold them in a predetermined memory (not shown), and manage them electrically.

[0091] The drive control of each of the motors 8 and 8U is performed by the control device 10 disposed in the head box 1. Further, in the present embodiment, a rechargeable power supply 11 that can be charged from the outside and supplies power to the encoders 15, 15U, the motors 8, 8U, and the control device 10 is disposed in the head box 1.

[0092] In the example shown in FIGS. 11 and 12, a charging connector substrate 18 having a charging connector 18a for charging from the outside is disposed in the bottom rail 7. Then, a power supply cord 17 (in this example, a power supply cord for supplying power for charging the rechargeable power supply 11) that electrically connects the rechargeable power supply 11 and the charging connector substrate 18 is woven into the pitch holding cords that hang down from the head box 1 to the intermediate rail 7U and from the intermediate rail 7U to the bottom rail 7 on the back side of each of the screens 6U and 6L in the same manner as in the first embodiment. As a result, regardless of the height of the intermediate rail 7U or the bottom rail 7, the power supply cord 17 cannot be visually recognized from the front side of each of the screens 6U and 6L, and the design property is improved.

[0093] The control device 10 monitors each pulse signal from the encoders 15, 15U, detects the presence or absence of each touch operation on the intermediate rail 7U and the bottom rail 7, and the lifting and lowering directions of the intermediate rail 7U or the bottom rail 7 due to the touch operation. Based on the detection of the lifting and lowering directions of the intermediate rail 7U or the bottom rail 7, it controls the driving of the corresponding motors 8, 8U so as to automatically lift and lower the intermediate rail 7U or the bottom rail 7 related to the touch operation until the movement of the intermediate rail 7U or the bottom rail 7 is blocked. Thereby, the operator can automatically lift and lower the shielding material (the upper screen 6U provided with the intermediate rail 7U at the lower end or the lower screen 6L provided with the bottom rail 7 at the lower end) in the desired direction with a slight touch operation on the handle 71 or 72, and can stop the automatic lifting and lowering of the shielding material (the upper screen 6U provided with the intermediate rail 7U at the lower end or the lower screen 6L provided with the bottom rail 7 at the lower end) at the desired position.

[0094] Also, the control device 10 monitors whether the charging state of the rechargeable power source 11 is below a predetermined reference value. When it is below the predetermined reference value, it determines whether the current height of the bottom rail 7 is higher than a predetermined height (for example, a height of about 1 m from the floor where many operators can reach) at which charging from the outside is possible. When it is higher than the predetermined height, it has a function of driving the motor 8 to lower the height of the bottom rail 7 to the predetermined height. Thereby, the operator can easily perform the charging operation on the rechargeable power source 11. Further, even when the charging state of the rechargeable power source 11 is below the predetermined reference value and the power storage state is insufficient to drive both of the motors 8, 8U, manual operation by the operator is possible as described above, and it functions like a manually operated lifting and lowering type pleated screen.

[0095] The charging connector 18a provided on the charging connector board 18 shown in FIGS. 11 and 12 is exposed from below the bottom rail 7 (or it may be from the side, front, or rear), and can be electrically connected to the connection connector 20a at one end of the charging cord 20 similar to that shown in FIG. 3. The connection connector 20b at the other end of the charging cord 20 can be connected to the output terminal 30a of the AC adapter 30. Therefore, if the height of the bottom rail 7 is a predetermined height that allows charging from the outside (for example, a height of about 1 m from the floor where many operators can reach), the input terminal (not shown) of the AC adapter 30 is connected to the AC power outlet, and it is possible to charge the rechargeable power source 11 from the AC adapter 30 via the power cord 17.

[0096] Therefore, even in an electric shielding device that electrically raises and lowers each shielding material based on a touch operation when having upper and lower two-stage shielding materials as in this embodiment, the same operations and effects as those in the first embodiment can be achieved.

[0097] Also, in this embodiment as well, similar to the example illustrated in FIG. 7 as a modification of the first embodiment, with the rechargeable power source 11 and the charging connector board 18 electrically connected, they can both be provided in the bottom rail 7, and a configuration can also be adopted in which the control device 10 disposed in the head box 1 and the rechargeable power source 11 are electrically connected by the power cord 17. Regarding the power cord 17 in this case, it is preferable to incorporate it into the pitch holding cord on the back side of each screen 6U, 6L, or to incorporate it into the lifting cord 3. And for a shielding device that uses the lifting cord 3, not limited to an electric pleated screen, the same configuration can also be applied to an electric horizontal blind, an electric pull-up curtain, etc.

[0098] Also, in this embodiment, instead of providing a charging connector board 18 for charging via the AC adapter 30 inside the bottom rail 7, a non-contact power receiving unit 19 may be provided as in the above-described second embodiment, and instead of charging via the AC adapter 30, a non-contact power feeding device 21 may be provided with respect to the side wall W (or on the floor surface FL). Then, as described with reference to FIG. 9, control may be performed such that the bottom rail 7 is returned to its original height after full charging under the control of the control device 10.

[0099] The electric shading device in each of the above-described embodiments is an example configured to electrically raise and lower the shading material based on a touch operation. However, since the constant load unit 16 is provided, even when the charging state of the rechargeable power source 11 falls below a predetermined reference value and the storage state is insufficient to drive the motor 8, manual operation by the operator is possible as described above, and it functions like a manually operated lifting and lowering type shading device.

[0100] In particular, since the constant load unit 16 is provided in the electric shading device according to each of the above-described embodiments of the present invention, it is possible to manually perform opening and closing operations even when electricity cannot be supplied due to a power outage or the like. That is, in a general electric shading device, the lifting and lowering operation of the shading material cannot be performed when electricity cannot be supplied during a power outage or the like. However, like the electric shading device according to the present invention, by enabling manual operation, the shading material can be lifted and lowered even during a power outage, improving convenience.

[0101] Also, for further improvement in convenience, in the electric shading device in each of the above-described embodiments, the control device 10 may be configured to have a function of controlling such that the shading material is not lifted and lowered without rotating the motor 8 in the case of a minute operation (a touch operation of 2 cm or less such as slightly pulling the shading material by hand) defined in advance as a touch operation. And the electric shading device according to each embodiment of the present invention can be manually operated regardless of whether electricity can be supplied (not limited to abnormal times such as during a power outage).

[0102] Not only when the lifting of the shielding material is configured to be electrically driven based on a touch operation, but also when the lifting of the shielding material is configured to be electrically driven based on an operation signal from an external device such as a switch or a remote controller, by providing the constant load unit 16, even in the event of an abnormality such as a power failure, manual operation by the operator is possible as described above, and it can function like a manually operated lifting type shielding device. Hereinafter, a typical example thereof will be described as a fourth embodiment with reference to FIG. 13.

[0103] 〔Fourth Embodiment〕 FIG. 13 is a block diagram schematically showing the schematic configuration of an electric pleated screen as an electric shielding device according to the fourth embodiment of the present invention. In FIG. 13, the same reference numerals are given to the same components as those in the above-described embodiments.

[0104] The electric shielding device according to the fourth embodiment shown in FIG. 13 is configured as a modification example from the electric shielding device according to the first embodiment typically shown in FIG. 3. Compared with the configuration of the electric shielding device according to the first embodiment, it is different in that a power supply unit 42, a wired signal receiving unit 43, and a wireless signal receiving unit 44 are further provided in the head box 1, and the other components are the same.

[0105] The power supply unit 42 is a functional unit that receives the supply of AC power from the outlet 40 via the power plug 41, converts it into DC power, and supplies power to the control device 10.

[0106] The wired signal receiving unit 43 is a functional unit that receives an operation signal from the switch 45 (which may be another external device such as a personal computer) by wire and outputs it to the control device 10.

[0107] The wireless signal receiving unit 44 is a functional unit that receives an operation signal from the remote controller 46 (which may be another external device such as a personal computer) wirelessly and outputs it to the control device 10.

[0108] And the control device 10 in the electric shielding device according to the fourth embodiment shown in FIG. 13 has a function of controlling the lifting of the shielding material electrically based on an operation signal from an external device such as a switch 45 or a remote controller 46.

[0109] Further, the control device 10 in the electric shielding device according to the fourth embodiment shown in FIG. 13 can be configured to also have a function of electrically lifting the shielding material based on a touch operation, as in the first to third embodiments described above.

[0110] In FIG. 13, as a preferred example, it shows an example of including a rechargeable power source 11 so that it can operate temporarily even when there is no power supply from the power supply unit 42 in the event of an abnormality such as a power failure of the AC power supply at the power outlet 40. This rechargeable power source 11 is charged from the AC adapter 30 and supplies power to the control device 10 via the power supply cord 17, as in the first to third embodiments described above. However, since the power supply unit 42 is provided in this embodiment, the installation of the rechargeable power source 11 may be omitted.

[0111] And since the electric shielding device of this embodiment is provided with a constant load unit 16, it is possible to perform manual opening and closing operations even when electricity cannot be supplied due to a power failure or the like, improving convenience.

[0112] Also, for further improvement of convenience, in the electric shielding device of this embodiment as well, the control device 10 can be configured to have a function of controlling so that the shielding material is not lifted or lowered without rotating the motor 8 in a minute operation (such as slightly pulling the shielding material by hand) defined in advance as a touch operation. Also, in the electric shielding device of this embodiment according to the present invention, it is possible to operate manually regardless of whether electricity can be supplied (not limited to abnormal times such as a power failure).

[0113] Although the electric shading device according to the fourth embodiment shown in FIG. 13 has been described as an example configured as a modification of the electric shading device according to the first embodiment shown in FIG. 3, as a modification of the electric shading device according to each of the embodiments shown in FIGS. 7, 8, and 12, similar to the one shown in FIG. 13, an embodiment in which a power supply unit 42, a wired signal receiving unit 43, and a wireless signal receiving unit 44 are further provided in the head box 1 may be adopted, and the same operations and effects as those of the fourth embodiment shown in FIG. 13 described above may be achieved.

[0114] Although the present invention has been described by way of examples of specific embodiments, the present invention is not limited to the examples of the foregoing embodiments, and various modifications are possible without departing from the technical idea thereof. For example, in the description of the above-described embodiments, wireless charging is not limited to the case where it is physically non-contact, and includes a physical contact state from the viewpoint of realizing wireless charging. Further, regarding the charging pole 14 according to the fourth embodiment, the rod-shaped body 142 may be made telescopic, or the rechargeable power supply 11 may be directly fixedly held in the head box 1 without passing through the charging mechanism unit 12, and the rechargeable power supply 11 may be configured to be chargeable by direct surface contact or non-contact. Further, in the examples of the above-described embodiments, preferred examples using the rechargeable power supply 11 have been mainly described. However, from the viewpoint of electrically raising and lowering the shielding material suspended and supported from the support based on a touch operation, an embodiment using a non-rechargeable DC power supply (a power supply having an AC power supply on the primary side and being wired-connected by a power cord) instead of the rechargeable power supply 11 may be adopted.

Industrial Applicability

[0115] According to the present invention, since the shielding material suspended and supported from the support is electrically raised and lowered based on a touch operation, the operability is improved, and when a rechargeable power supply is used, the charging operation for the rechargeable power supply is facilitated, which is useful for the application of the electric shading device.

Explanation of Reference Numerals

[0116] 1 Head box 2, 2U Take-up drum 2a Support member 3, 3U Lifting cord 4 Pitch Holding Code 5A, 5B, 5AU, 5BU Drive Shafts 6 Screen, or Lower Screen 6U Upper Screen 7 Bottom Rail 7U Intermediate Rail 8, 8U Motors 9, 9U Transmission Members 10 Control Device 11 Rechargeable Power Source (Rechargeable Battery) 11a Non-Contact Power Receiving Portion 12 Charging Mechanism Portion 12a Support Portion 12b Power Storage Surface 12c Adsorbing Member 13 Bracket 14 Power Supply Pole 15, 15U Rotation Detection Sensor (Encoder) 16, 16U Biasing Means (Constant Load Unit) 17 Energizing Cord 18 Charging Connector Substrate 18a Charging Connector 19 Non-Contact Power Receiving Portion 20 Charging Cord 21 Non-Contact Power Supply Device 30 AC Adapter 40 Outlet 41 Power Plug 42 Power Supply Portion 43 Wired Signal Receiving Portion 44 Wireless Signal Receiving Portion 45 Switch 46 Remote Controller 71, 72 Handles 91 First Gear 92 Second Gear 93 One-Way Clutch Portion 141 Charger 142 Rod-Like Body 143 Power Supply Portion 144 Non-Contact Charging Body 145 Energizing Cord 146 Power Supply Body 147 AC Cable

Claims

1. An electric shading device that electrically opens and closes a shading material suspended from a support based on a touch operation, a sensor that detects the opening and closing direction of the shading material by a touch operation, a motor for opening and closing the shading material, a control device that controls the driving of the motor so as to automatically open and close the shading material until the movement of the shading material is blocked based on the detection of the opening and closing direction of the shading material by the sensor, and a power source for supplying power to the sensor, the motor, and the control device, wherein the control device has a function of controlling so as not to rotate the motor and not to raise and lower the shading material in a minute operation determined in advance as a touch operation. The electric shading device is characterized by this.

2. An electric shading device that electrically raises and lowers a shading material suspended from a support based on a touch operation, a winding drum that winds up or winds back the other end of a lifting cord having one end attached to a rail located at the lower end of the shading material, a drive shaft inserted in a non-rotatable manner relative to the central axis of the winding drum, biasing means for biasing the rotation of the drive shaft in the winding direction of the lifting cord with a predetermined biasing force that prevents the shading material from automatically rising when not in operation, a sensor that detects the forward and reverse rotation of the drive shaft by a touch operation on the shading material, a motor for raising and lowering the shading material, a one-way clutch type transmission member that transmits only the rotation of the output shaft of the motor to the drive shaft, a control device that controls the driving of the motor so as to automatically raise and lower the shading material until the rotation of the drive shaft is blocked based on the detection of the forward and reverse rotation by the sensor, and a power source for supplying power to the sensor, the motor, and the control device, comprising The control device has a function of controlling so that the shielding material is not lifted or lowered and the motor is not rotated in the case of an operation of a minute amount determined in advance as a touch operation, in the electric shielding device.

3. The power source is provided on the support body, A charging connector that enables external charging of the power source is provided on a rail located at the lower end of the shielding material, A current-carrying cord that connects the power source and a charging connector board having the charging connector is incorporated and suspended in a predetermined cord that hangs from a head box constituting the support body to the rail on the back side of the shielding material, in the electric shielding device according to claim 1 or 2.

4. The power source is provided on a rail located at the lower end of the shielding material, A charging connector that enables external charging of the power source is provided on the rail, A current-carrying cord that connects the control device and the power source is incorporated and suspended in a predetermined cord that hangs from a head box constituting the support body to the rail on the back side of the shielding material, in the electric shielding device according to claim 1 or 2.

5. The power source is provided on the support body, A non-contact power receiving unit that receives power from a non-contact power feeding device that performs non-contact power feeding when the height of a rail located at the lower end of the shielding material is at a predetermined height and feeds the power to the power source is provided on the rail, A current-carrying cord that connects the power source and the non-contact power receiving unit is incorporated and suspended in a predetermined cord that hangs from a head box constituting the support body to the rail on the back side of the shielding material, in the electric shielding device according to claim 1 or 2.

6. The power source is provided on a rail located at the lower end of the shielding material, A non-contact power receiving unit that receives power from a non-contact power feeding device that performs non-contact power feeding when the height of the rail is at a predetermined height and feeds the power to the power source is provided on the rail, The energization cord connecting the control device and the power source is incorporated into a predetermined cord that hangs from the head box constituting the support to the rail on the back side of the shielding material and hangs down, characterized in that the electric shielding device according to claim 1 or 2.

7. The control device includes means for monitoring the charging state of the power source, means for monitoring the height of the rail, and means for controlling the drive of the motor so as to lower and stop the rail to a predetermined height when the charging state is below a predetermined reference value and the rail is at a position higher than the predetermined height, characterized in that the electric shielding device according to any one of claims 3 to 6.

8. The control device further includes means for monitoring whether the power source is in a fully charged state with the rail lowered to the predetermined height, and means for controlling the drive of the motor so as to return the rail to the original height before charging after determining that the power source is in the fully charged state, characterized in that the electric shielding device according to claim 7.

Images