JP7199181B2 - electric shielding device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric shielding device that raises and lowers a shielding material using the driving force of a motor.

The electric shielding device can raise and lower the shielding material by rotating the drive shaft with the driving force of the motor and winding or rewinding the lifting cord (including string-like cord or tape-like lifting tape) with the winding drum. It has become.

In such an electric shielding device, a motor is provided in the headbox, rotation of the output shaft of the motor is transmitted to the drive shaft, and the shielding material is raised and lowered based on the rotation of the drive shaft.

In addition, an encoder for detecting the rotation speed and amount of rotation of the drive shaft is arranged in the head box of the electric shielding device, and based on the pulse signal output from the encoder, the speed of the encoder pulse and the number of pulses are counted. Managing values, the speed and amount of rotation of the motor are controlled by a controller located in the headbox. By such an operation, the speed of raising and lowering the shielding material is appropriately adjusted, and the stop position of the raised and lowered shielding material is controlled.

By the way, as a type of electric shielding device, it is known that an electric pleated screen can be configured in which a screen that can be folded vertically in a zigzag shape, for example, is suspended from a head box as a shielding material, and the screen can be raised and lowered electrically. (See, for example, Patent Documents 1 and 2).

In particular, in the electric pleated screen disclosed in Patent Document 1, shielding materials are arranged in a plurality of stages (plural types) in the vertical direction so that the screen can be raised and lowered electrically. That is, in this electric pleated screen, the screen is composed of an upper shielding material (upper screen) and a lower shielding material (lower screen) made of different fabrics in the upper and lower stages, and the upper edge of the upper screen is attached to the head box and suspended. The bottom edge of the lower screen is then attached to the intermediate rail, the upper edge of the lower screen is attached to the intermediate rail and suspended, and the lower edge is attached to the bottom rail. The intermediate rail and the bottom rail are suspended from the head box by independent lifting cords, and the upper screen and the lower screen can be individually lifted and lowered by electric power.

Conventionally, such an electric shielding device is provided with a physical detection switch for detecting the physical upper limit position and lower limit position when the screen is moved up and down.

For example, as disclosed in Patent Document 1, an upper limit switch that mechanically detects whether or not the folded screen is in contact is provided to indicate whether the folded screen is in contact or not. The position when it is turned ON is the physical upper limit position. A slack detection switch for mechanically checking the presence or absence of slack in the elevating cord for raising and lowering the screen is provided, and the position when the slack detection switch indicating the presence of slack in the elevating cord is turned on is set to the physical lower limit position. It is often said that

Incidentally, such a slack detection switch is also used to detect an obstacle when the screen is lowered, and constitutes an obstacle detection stop device. The obstacle detection stop device stops the operation of the motor when the rail provided at the lower edge of the shielding material comes into contact with an obstacle during the lowering operation of the shielding material, making it impossible to descend. It has a function to automatically stop rewinding. For example, an obstacle detection stop device using a slack detection switch has a detector that slides in the head box due to slack in the lifting cord when there is an obstacle that prevents the screen from descending, The operation of the detector activates the microswitch. By detecting the operation of the microswitch, the control device provided in the head box performs "obstacle detection", and the control device "stops" the motor.

By the way, in the electric pleated screen disclosed in Patent Document 1, each of the plurality of stages of shielding materials arranged in the vertical direction can be individually raised and lowered by electric power. When one of the shielding materials is being moved up and down, the other shielding material cannot be moved up and down.

JP 2011-111763 A JP 2014-224346 A

In a conventional electric shielding device such as an electric pleated screen as disclosed in Patent Document 1, shielding materials are arranged in a plurality of stages (plural types) in the vertical direction so that they can be lifted and lowered by electric power. When raising and lowering each of the plurality of shielding members, while one shielding member is being raised and lowered, the other shielding member cannot be raised and lowered.

For example, in an electric pleated screen in which an upper screen and a lower screen are vertically connected and suspended, an operator performs an up/down operation using a wired switch or a remote controller (hereinafter referred to as "remote controller"). However, the operator operates a raise button for ascending operation, a descending button for descending operation, and a stop button for stopping ascending/descending operation with wired switches or remote controllers, and raises both screens. When it is desired to do so, it is necessary to first perform an operation to raise the upper screen to stop it, and then perform an operation to raise the lower screen to stop it. When it is desired to lower both screens, it is necessary to first lower the lower screen to stop it, and then lower the upper screen to stop it. In this way, in order to raise and lower the upper screen and the lower screen, the operation of one of the upper screen and the lower screen does not start unless the operation of the other screen is stopped. For this reason, when it is desired to raise or lower all of the shielding members in the plurality of stages, the time required for raising and lowering the shielding members is long, and there is a demand that the operation is troublesome for some operators. There is room.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electric shielding device capable of electrically raising and lowering each of a plurality of vertically arranged shielding members at the same time.

Further, an electric shielding device according to one aspect of the present invention is an electric shielding device in which each of a plurality of stages of shielding members in which an upper shielding member and a lower shielding member are arranged in a vertical direction can be electrically operated to ascend and descend. a first elevating means for individually electrically elevating the upper shielding material and the lower shielding material; and a second elevating means for electrically elevating the upper shielding material and the lower shielding material at the same time, The first elevating means and the second elevating means relate to the elevating operation of the upper shielding member and the lower shielding member. Three types of commands commonly used for lifting and lowering the upper shielding member and the lower shielding member are accepted without identification of the upper shielding member and the lower shielding member corresponding to the type of button, and the three types of commands are accepted. It is characterized by comprising control means for performing a predetermined up-and-down control according to the order.

In one aspect of the electric shielding device according to the present invention, when the control means receives the lift command based on the operation of the lift button while the operation of the upper shielding member and the lower shielding member is stopped, first, the Only the upper shielding member starts to rise, allowing a further rise command to be received while the upper shielding member is rising, and when the further rising command is received, the lower shielding member also starts to rise at the same time. , during the simultaneous operation of the upper shielding member and the lower shielding member, only the upper shielding member stops rising when a stop command based on the operation of the stop button is received, and a further stop command is received or the lower shielding member is It is characterized in that control is performed to stop the upward movement of the lower shielding member when the shielding member reaches the same position as the upper shielding member within a predetermined range.

In one aspect of the electric shielding device according to the present invention, when the upper shielding member reaches the upper limit position without receiving the further raising command under the upward movement of the upper shielding member, the control means controls the upper shielding member is characterized by stopping the rising operation of

In one aspect of the electric shielding device according to the present invention, when the control means receives a lowering command based on the operation of the lowering button while the upper shielding member and the lower shielding member are not in operation, the lower shielding member is operated first. Only the lower shielding member starts descending, allowing a further descending command to be received while the lower shielding member descends, and when the further descending command is received, the upper shielding member also begins descending at the same time. , during simultaneous operation of the upper shielding member and the lower shielding member, only the lower shielding member stops descending when a stop command based on the operation of the stop button is received, and a further stop command is received or the upper shielding member is The upper shielding member is controlled to stop descending when the shielding member reaches the same position as the lower shielding member within a predetermined range.

In one aspect or another aspect of the electric shielding device according to the present invention, when the lower shielding material reaches the lower limit position without receiving the further lowering command under the lowering operation of the lower shielding material, the control means It is characterized by stopping the downward movement of the lower shielding material.

In one aspect of the electric shielding device according to the present invention, each of the upper shielding member and the lower shielding member is configured to be moved up and down by rotating a drive shaft driven by a motor, and the upper shielding member and the lower shielding member is provided with a clutch-type obstacle detecting and stopping means that operates to detect an obstacle that hinders the lowering movement and mechanically lock the rotation of the drive shaft.

In one aspect of the electric shielding device according to the present invention, the control means controls the upper shielding member after the obstacle detection stopping means provided individually for each of the upper shielding member and the lower shielding member is operated. and a means for automatically raising and stopping at least a position where the creep load of the drive shaft is released individually for each of the lower shielding members .

In one aspect of the electric shielding device according to the present invention, the control means controls the upper shielding member after the obstacle detection stopping means provided individually for each of the upper shielding member and the lower shielding member is operated. and a means for automatically raising and stopping at least to a position where the lock of the drive shaft is released individually for each of the lower shielding members .

According to the present invention, each of the plurality of shielding members (upper screen, lower screen, etc.) arranged in the vertical direction can be raised and lowered simultaneously by electric power, thereby improving usability.

(a) and (b) are respectively a plan view and a front view showing a schematic configuration of an electric shielding device according to one embodiment of the present invention. 1(a) is a cross-sectional view showing a schematic configuration of a clutch-type obstacle detection/stopping device provided in an electric shielding device according to an embodiment of the present invention, and FIGS. It is a perspective view which shows operation|movement of the clutch-type obstacle detection stop apparatus provided in the electric shielding apparatus of embodiment. 1 is a block diagram showing a schematic configuration of a control device in an electric shielding device of one embodiment according to the present invention; FIG. 4 is a flow chart showing an example of shielding member raising control by a control device in the electric shielding device of one embodiment according to the present invention. (a) to (d) are schematic front views for explaining the operation of the electric shielding device when the shielding material is controlled to rise by the control device in the electric shielding device according to one embodiment of the present invention. FIG. 4 is a flow chart showing an example of lowering control of the shielding material by the control device in the electric shielding device of one embodiment according to the present invention. FIG. (a) to (d) are schematic front views for explaining the operation of the electric shielding device when the shielding member is controlled to descend by the control device in the electric shielding device of the embodiment according to the present invention. 4 is a flow chart showing an example of obstacle detection control during the lowering operation of the shielding material by the control device in the electric shielding device of the embodiment according to the present invention. 4 is a flow chart showing an example of lowering control immediately after an obstacle is detected during lowering operation of the shielding material by the control device in the electric shielding device of the embodiment according to the present invention.

An electric shielding device according to an embodiment of the present invention will be described below with reference to the drawings. In the specification of the present application, with respect to the front view of the electric shielding device shown in FIG. ), the left direction in the drawing is defined as the left side of the electric shielding device, and the right direction in the drawing is defined as the right side of the electric shielding device. In addition, in the examples described below, with respect to the front view of the electric shielding device shown in FIG. 1, the side to be visually recognized is the front side (or indoor side), and the opposite side is the rear side (or outdoor side).

(overall structure)
1(a) and 1(b) are respectively a plan view and a front view showing a schematic configuration of an electric shielding device according to one embodiment of the present invention. As a representative example of the electric shielding device shown in FIG. 1, an electric pleated screen for raising and lowering a shielding material is shown. However, it is not necessary to be limited to this as long as it is possible to raise and lower a plurality of stages of shielding materials connected in the vertical direction by rotating the drive shaft.

In the electric pleated screen of one embodiment shown in FIGS. 1(a) and 1(b), an upper screen 6U as an upper shielding material and a lower shielding material that can be individually lifted and lowered by a plurality of types of lifting cords 3U and 3L. Although an example in which two types of shielding materials for the lower screen 6L are arranged vertically is shown, an electric pleated screen may be used in which three or more types of shielding materials are arranged vertically.

In the electric pleated screen of one embodiment shown in FIGS. 1(a) and 1(b), an upper screen 6U that can be bent in a zigzag shape is suspended from a headbox 1, and the lower end of the screen 6U is connected to an intermediate rail 4. Attached to the top surface. The headbox 1 is fixed via a bracket 15 to a mounting surface such as a ceiling surface.

The lower surface of the intermediate rail 4 is attached with the upper end of a lower screen 6L which can also be bent in a zigzag shape, and the lower end of the lower screen 6L is attached with the bottom rail 7.

Winding drums 51A and 51B are rotatably supported in parallel in the front-rear direction with respect to respective support members 5 disposed at appropriate locations (two locations on the left and right in this example) within the head box 1 . Cam clutches 52A and 52B are provided at one axial ends of the winding drums 51A and 51B, respectively. Each winding drum 51A and cam clutch 52A, and each winding drum 51B and cam clutch 52B are configured in the same shape.

Each winding drum 51A has an upper end of the lifting cord 3L (in this example, it is a cord-like cord, but may be a tape-like lifting tape) attached so that it can be wound or rewound. The lower end passes through the upper screen 6U, the intermediate rail 4, and the lower screen 6L in this example and is attached to the bottom rail 7. As shown in FIG. The winding drum 51A is formed so that the diameter gradually becomes smaller toward one side in the axial direction, and in this example, the string-like lifting cord 3L is spirally wound sequentially around the winding drum 51A. there is

Each winding drum 51B has an upper end of a lifting cord 3U (a cord-like cord in this example, but may be a tape-like lifting tape) attached so that it can be wound or rewound. The lower end of 3U passes through the upper screen 6U in this example and is attached to the intermediate rail 4 . The winding drum 51B is formed such that its diameter gradually becomes smaller toward one side in the axial direction, and in this example, the cord-like lifting cord 3U is spirally wound around the winding drum 51B sequentially. there is

A drive shaft 2A is inserted through the center shafts of the winding drum 51A and the cam clutch 52A, and the cam clutch 52A transmits the rotation of the drive shaft 2A to the winding drum 51A and drives the driving force of the winding drum 51A. It is adapted to be transmitted to the shaft 2A.

Similarly, the drive shaft 2B is inserted through the central shafts of the winding drum 51B and the cam clutch 52B, and the cam clutch 52B transmits the rotation of the drive shaft 2B to the winding drum 51B and drives the winding drum 51B. It is adapted to transmit force to the drive shaft 2B.

One end of the drive shaft 2A is connected to the output shaft of the motor 9A via the drive shaft coupler 20A, and the rotation of the output shaft of the motor 9A is transmitted to the drive shaft 2A. Therefore, the drive shaft 2A is rotated by the driving force of the motor 9A, and the lifting cord 3L is wound up or unwound by the winding drum 51A based on the rotation of the drive shaft 2A, whereby the bottom rail 7 can be moved up and down. As a result, the lower screen 6L can be raised and lowered, and the upper screen 6U and the intermediate rails 4 can be raised and lowered. Incidentally, since the winding drum 51A utilizes the tension (the weight of each screen and each rail) associated with the lifting cord 3L when the lower screen 6L is lowered, the driving force is applied to the winding drum 51A via the cam clutch 52A. is transmitted to the drive shaft 2A, and the drive force applied to the drive shaft 2A is adjusted to control the descent.

One end of the drive shaft 2B is connected to the output shaft of the motor 9B via the drive shaft coupler 20B, and the rotation of the output shaft of the motor 9B is transmitted to the drive shaft 2B. Therefore, the drive shaft 2B is rotated by the driving force of the motor 9B, and the lifting cord 3U is wound up or unwound by the winding drum 51B based on the rotation of the drive shaft 2B. Thereby, the upper screen 6U can be raised and lowered. In addition, since the winding drum 51B uses the tension (the weight of the upper screen 6U and the intermediate rails 4) associated with the lifting cord 3U when the upper screen 6U is lowered, the driving force of the winding drum 51B is transmitted through the cam clutch 52B. It is transmitted from the drum 51B to the drive shaft 2A, and is controlled to descend by adjusting the driving force associated with the drive shaft 2B.

Drive control of each of the motors 9A and 9B is performed by a control device 10 arranged in the headbox 1. FIG. A DC power supply 11 for supplying power to the motors 9A and 9B and the control device 10 is arranged in the headbox 1 . When receiving an operation signal from an external device (not shown) such as a wired switch 21, a wireless remote controller 22, an infrared remote controller 23, or a personal computer (PC), the control device 10 responds to various commands included in the operation signal. Performs various controls for the corresponding electric shielding device. For example, by configuring the motors 9A and 9B as DC motors respectively, by controlling the duty ratio of the pulse signal supplied from the control device 10 to the motors 9A and 9B, the control device 10 controls the rotational speeds of the motors 9A and 9B. can be controlled. Encoders 8A and 8B for detecting the rotational speed and amount of rotation of the drive shafts 2A and 2B are provided in the head box 1, and the controller 10 responds to the pulse signals output from the encoders 8A and 8B. Based on this, the rotation speed and rotation amount of the motors 9A and 9B are controlled by managing the speed of the encoder pulses and the count value of the number of pulses. Through such operations, the control device 10 appropriately adjusts the elevation speed of the upper screen 6U or the lower screen 6L in response to various commands included in the operation signal, and It controls the elevation stop position of the screen 6L.

In the electric pleated screen of this embodiment configured in this way, the intermediate rail 4 is pulled up to directly below the headbox 1, and the bottom rail is folded in a state where the upper screen 6U is folded between the headbox 1 and the intermediate rail 4. 7 is lowered, the lower screen 6L is suspended from the headbox 1. As shown in FIG.

Further, when the intermediate rail 4 is lowered above the bottom rail 7 while the bottom rail 7 is lowered to the lower limit, the lower screen 6L is folded between the intermediate rail 4 and the bottom rail 7, and the head box 1 and the intermediate rail 7 are folded. The upper screen 6U is suspended and supported between the rails 4.例文帳に追加Therefore, for example, if the upper screen 6U is made of a light-receiving material and the lower screen 6L is made of a light-shielding material, it is possible to increase the degree of freedom in adjusting the amount of light.

By lowering the bottom rail 7 to the lower limit and positioning the intermediate rail 4 between the head box 1 and the bottom rail 7, it is possible to receive soft light transmitted through the upper screen 6U made of light-receiving fabric. can.

When the bottom rail 7 is pulled up to the upper limit and opened, the bottom rail 7 is pulled up together with the intermediate rail 4, and the upper screen 6U and the lower screen 6L are folded between the head box 1 and the bottom rail 7. can do.

(Clutch-type obstacle detection and stopping device)
By the way, when the intermediate rail 4 or the bottom rail 7 comes into contact with an obstacle and its descent is prevented, a clutch-type obstacle detecting and stopping device is actuated to lock the drive shaft 2A or 2B. That is, when the intermediate rail 4 or the bottom rail 7 comes into contact with an obstacle, the winding drum 51A and cam clutch 52A, and the winding drum 51B and cam clutch 52B, which are supported by the support member 5, act as "obstacles" against each rail. It functions as a clutch-type obstacle detection stop device that mechanically performs "object detection" and "stop" of each drive shaft. That is, the winding drum 51A and the cam clutch 52A supported by the supporting member 5, and the winding drum 51B and the cam clutch 52B are configured as a clutch-type obstacle detecting/stopping device as shown in FIG.
A clutch-type obstacle detecting and stopping device will be briefly described below.

The winding drum 51B and the cam clutch 52B have the same structures as the winding drum 51A and the cam clutch 52A, respectively. 4 shows a cross-sectional view of the configuration of the winding drum 51A and the cam clutch 52A functioning as a clutch-type obstacle detecting and stopping device.

As shown in FIG. 2(a), in the clutch type obstacle detection and stopping device, a winding drum 51A and a cam clutch 52A are supported by a support portion 50 of a support member 5, and the cam clutch 52A rotates a rotating drum 53. It is connected to the winding drum 51A via.

The support member 5 is fixed by fitting a snap fit 501 protruding from the bottom surface of the support member 5 to the head box 1 . The cam clutch 52A, the rotating drum 53, and the winding drum 51A are rotatably supported between through holes 502 and 503 formed at both left and right ends of the support portion 50. As shown in FIG. More specifically, the cylindrical portion 521 of the cam clutch 52A is rotatably supported in the through hole 502, and the pulley cap 54 fitted to the right end of the winding drum 51A in the drawing is rotatable in the through hole 503. pivoted.

The snap fit 501 is formed with an outlet through which the lifting cord 3L is wound up or unwound from a predetermined position. A damping projection 504 is formed on the bottom surface of the left side of the support portion 50 in the drawing.

The winding drum 51</b>A is formed in a substantially cylindrical shape and includes an engaging portion 511 and a winding portion 512 .

The winding portion 512 of the winding drum 51A is set so that its diameter gradually decreases from the cam clutch 52A side toward the right end side in the drawing. A drive shaft 2A penetrates through the center of a pulley cap 54 fitted to the right end of the winding drum 51A in the drawing so as to be relatively rotatable.

A cam clutch 52A is accommodated radially inside the engaging portion 511 of the winding drum 51A. The cam clutch 52A has a substantially cylindrical cylindrical portion 521 and a braking portion 522 having a diameter larger than that of the cylindrical portion 521 .

The diameter of the outer peripheral surface of the braking portion 522 is set to be large enough to slide on the inner peripheral surface of the engaging portion 511 of the winding drum 51A. One or a plurality of braking claws 523 are protruded in a sawtooth shape at the end of the braking portion 522 on the side of the cylindrical portion 521 , and are engageable with the braking convex portion 504 of the support portion 50 .

When the braking pawl 523 is prevented from rotating in the circumferential direction by being engaged with the braking projection 504, the cam clutch 52A is rendered non-rotatable relative to the support portion 50. As shown in FIG.

The side wall of the braking portion 522 of the cam clutch 52A has a predetermined rotational play with the winding drum 51A through the rotating drum 53, and is assembled so as not to rotate relative to the winding drum 51A. It has a cam structure that makes it relatively movable (slidable) along the direction.

That is, a sliding hole 524 as a cam structure is formed in the side wall of the braking portion 522 of the cam clutch 52A, and the sliding hole 524 is formed so as to be inclined at approximately 45° with respect to the axis of the braking portion 522. ing. Further, the length of the sliding hole 524 is set so that the sliding hole 524 is arranged over an angular range of approximately 45° in the circumferential direction of the braking portion 522 .

The rotating drum 53 is formed with a sliding projection 531 projecting radially outward. The rotating drum 53 is assembled to the cam clutch 52A so that the sliding protrusions 531 are positioned inside the sliding holes 524 of the cam clutch 52A. Relative movement is possible only within the range of relative movement inside the .

Specifically, when the sliding protrusion 531 is positioned at one end of the sliding hole 524, the cam clutch 52A is positioned closest to the take-up pulley 9 (right side in FIG. 2(a)). The engagement state between 523 and braking projection 504 is released. On the other hand, when the sliding convex portion 531 is positioned at the other end of the sliding hole 524, the cam clutch 52A slides in the axial direction to the side closest to the take-up pulley 9 (left side in FIG. 2(a)). As a result, the braking pawl 523 and the braking protrusion 504 are engaged.

When the braking claws 523 and the braking projections 504 are engaged with each other, the rotation of the cam clutch 52A is prevented, and the sliding projections 531 moved to the other end of the sliding hole 524 are prevented from rotating further. rotation of the rotary drum 53 is stopped, and the rotation of the drive shaft 2A connected to the rotary drum 53 so as not to rotate relative thereto is also stopped.

Therefore, when the cam clutch 52A relatively moves in the axial direction of the winding drum 51A and the braking pawl 523 is engaged with the braking convex portion 504, the cam clutch 52A is locked to the support portion 50 so as not to rotate relative thereto. be. Further, when the engagement state between the braking claw 523 and the braking projection 504 is released, the cam clutch 52A becomes rotatable relative to the support portion 50. As shown in FIG.

A rotating drum 53 is accommodated radially inside the cam clutch 52A. The rotating drum 53 has a substantially cylindrical shape, has a predetermined rotational play with respect to the winding drum 51A, and cannot rotate relative to the winding drum 51A. It is worn as Further, the drive shaft 2A penetrates through the cylindrical portion 515 so as to be relatively rotatable, and the rotating drum 53 rotates integrally with the drive shaft 2A.

Thus, when the drive shaft 2A is rotated in the direction of pulling up the shielding material (lower screen 6L), the rotation is transmitted to the rotating drum 53. As shown in FIG. At this time, the rotating drum 53 is rotated relative to the winding drum 51A and the cam clutch 52A during the predetermined rotational play.

In this case, the engagement state between the braking claws 523 of the cam clutch 52A and the braking projections 504 of the support portion 50 is released, and the cam clutch 52A can rotate relative to the support portion 50. FIG. Then, the rotating drum 53 becomes unable to rotate relative to the cam clutch 52A and the winding drum 51A when the rotating drum 53 rotates beyond the predetermined rotational play.

Therefore, when the drive shaft 2A is further rotated in the lifting direction, the rotating drum 53 rotates in the lifting direction integrally with the cam clutch 52A and the winding drum 51A, and the shielding material (lower screen 6L) is driven to be lifted. will be

On the other hand, when the drive shaft 2A pulls down the shielding material (lower screen 6L), the weight of the lower screen 6L and the bottom rail 7 is used to pull down the drive shaft 2A. transmitted towards.

When the winding drum 51A and the cam clutch 52A are rotated in the pull-down direction, the engagement state between the braking claws 523 of the cam clutch 52A and the braking projections 504 of the support parts 50 is released. And the drive shaft 2A is immediately rotated in the pull-down direction.

Here, FIGS. 2(b) to 2(e) show the state shown in FIG. ), the operation of the winding drum 51A and the cam clutch 52A functioning as a clutch-type obstacle detection and stopping device are schematically illustrated. 2(d) and 2(e), one braking pawl 523 is simply illustrated, but a plurality of braking pawl 523 may be provided.

First, when the shielding material (lower screen 6L) is being pulled down as shown in FIG. It is returned and the lower screen 6L descends. The lifting cord 3L wound around the winding drum 51A is under tension in the pull-out direction due to the weight of the bottom rail 7 and the like. Rotation control controls its own weight rotation. At this time, the sliding projection 531 is positioned at one end of the sliding hole 524, and the cam clutch 52A is positioned closest to the take-up pulley 9 (right side in FIG. 2(a)). The engagement state with the braking protrusion 504 is released.

As shown in FIG. 2(c), when the bottom rail 7 collides with an obstacle, tension in the pull-out direction of the lifting cord 3L is lost, and the winding drum 51A stops rotating. And the drive shaft 2A maintains its rotation, so a rotation difference occurs. However, the rotating drum 53 is rotated relative to the winding drum 51A only during the predetermined rotational play.

Then, the sliding projection 531 is guided by the sliding hole 524, and as shown in FIG. The cam clutch 52A starts relative movement (sliding) in the axial direction while rotating.

Then, as shown in FIG. 2(e), the braking pawl 523 of the cam clutch 52A is engaged with the braking convex portion 504 during the passage of the predetermined rotational play of the rotating drum 53 as the winding drum 51A stops rotating. As a result, rotation in the circumferential direction is prevented, and the cam clutch 52A is rendered non-rotatable relative to the support portion 50. As shown in FIG. Rotation of the cam clutch 52A is blocked, and the sliding protrusion 531, which has been moved to the other end of the sliding hole 524, cannot rotate any more. The rotation of the drive shaft 2A, which is non-rotatably connected to , also stops. In this manner, the cam clutch 52A is rendered non-rotatable relative to the support portion 50, and when the predetermined rotational play of the rotating drum 53 elapses, the rotation of the rotating drum 53 also stops, and the rotation of the drive shaft 2A is locked.

In the example shown in FIG. 2, the cam clutch 52A is assembled so that the side wall of the braking portion 522 has a predetermined rotational play with the winding drum 51A through the rotating drum 53 so as not to rotate relative to the winding drum 51A. A cam structure that allows relative movement (sliding) along the axial direction by guiding the sliding protrusions 531 formed on the rotating drum 53 through the sliding holes 524 formed in the cam clutch 52A within the range of play. However, the cam structure for mechanically locking the drive shaft 2A is not limited to this example. Various forms are conceivable as long as it is a cam clutch structure that stops immediately.

For example, instead of the rotating drum 53 and the cam clutch 52A, a cam clutch formed with a braking claw 523 that can be engaged with the braking projection 504 and a sliding projection 531 may be configured, and the cam clutch may be installed inside the winding drum 51A. It can be configured to be supported by a peripheral wall. In this case, the cam clutch is configured to be non-rotatable relative to the drive shaft 2A but to allow relative movement (sliding movement) relative to the winding drum 51A in the axial direction within a predetermined range. In order to rotate the portion 531 in the same manner as the operation illustrated in FIG. 2, a cam clutch structure may be employed in which sliding grooves corresponding to the sliding holes 524 are formed in the inner peripheral wall of the winding drum 51A.

(Configuration of control device)
FIG. 3 is a block diagram showing a schematic configuration of the control device 10 in the electric shielding device of one embodiment according to the present invention.

When the control device 10 receives an operation signal from an external device such as a wired switch 21, a wireless remote controller 22, an infrared remote controller 23, or a personal computer (PC) 24, the controller 10 operates an electric motor corresponding to various commands included in the operation signal. Performs various controls for the shielding device. For example, the control device 10 manages the speed of the encoder pulse from the encoder 12 and the count value of the number of pulses, controls the rotation speed and rotation amount of the motors 9A and 9B, and raises and lowers each shielding material (each screen and each rail). It adjusts the speed as appropriate and controls the elevation stop position of each shielding material.

The wired switch 21 is an operation switch that outputs an operation signal to the control device 10 by being wired to the control device 10 .

The infrared remote controller 23 is a remote controller that outputs an operation signal to the control device 10 by wirelessly connecting to the control device 10 using infrared rays.

The wireless remote controller 22 is a remote controller that outputs an operation signal to the control device 10 by wirelessly connecting to the control device 10 via a wireless LAN (including short-range wireless communication).

A personal computer (PC) 24 outputs an operation signal to the control device 10 by connecting to the control device 10 by wire (or by connecting wirelessly via a wireless LAN).

Here, the operation signals include a rise command that instructs the upward operation of each shielding material (each screen and each rail), a descending command that instructs the downward operation of each shielding material, and a stop that instructs the lifting operation of each shielding material to stop. command, and a command for setting the upper and lower limit positions of each shielding material. In addition, various commands for instructing the elevation of each shielding material can be associated with a "% instruction operation" indicating the degree of opening ratio of each shielding material.

When the operator raises each shielding material (each screen and each rail) with the wired switch 21, the wireless remote controller 22, or the infrared remote controller 23, the operator presses the "△ button" as shown in FIG. When performing a descending operation, a descending command can be transmitted by pressing the "▽ button" as shown in FIG. A stop command can be sent by pressing the "□ button".

3, the control device 10 includes a microcomputer section 101, a storage section 102, an infrared signal receiving section 103, a radio signal transmitting/receiving section 104, a wired signal transmitting/receiving section 105, an external equipment interface (IF) section 106, It includes motor drive units 107a and 107b, abnormality detection units 108a and 108b, and pulse detection units 109a and 109b.

The infrared signal receiving section 103 is a functional section that receives an operation signal from the infrared remote controller 23 and outputs it to the microcomputer section 101 .

The radio signal transmission/reception unit 104 is a functional unit that receives an operation signal from the radio remote controller 22 and outputs it to the microcomputer unit 101. The microcomputer unit 101 and the radio remote controller 22 can communicate with each other, and the details of the operation are transmitted. commands can be exchanged.

The wired signal transmission/reception unit 105 is a functional unit that receives an operation signal from the wired switch 21 and outputs it to the microcomputer unit 101 .

An external device interface (IF) unit 106 is a functional unit that receives an operation signal from an external device such as the PC 24 and outputs it to the microcomputer unit 101. It enables mutual communication between them, enabling the exchange of detailed commands related to operations.

The motor drive units 107a and 107b are motor drivers that drive the motors 9A and 9B, respectively.

Abnormality detection units 108a and 108b are functional units that detect abnormal values (one or more of overcurrent/abnormal waveform current/abnormal waveform voltage) in motor drive units 107a and 107b, respectively, and notify microcomputer unit 101 of the abnormal values. .

The pulse detection units 109a and 109b are functional units that receive pulse signals from the encoders 8A and 8B, respectively, and notify the microcomputer unit 101 of them.

The microcomputer unit 101 reads out and executes a program stored in advance in the storage unit 102 , thereby receiving operation signals from the infrared remote controller 23 via the infrared signal receiving unit 103 and wireless signal transmitting/receiving unit 104 . an operation signal from the wireless remote controller 22, an operation signal from the wired switch 21 received via the wired signal transmission/reception unit 105, or an operation signal from an external device such as the PC 24 received via the external device IF unit 106. , processes various commands contained in the operation signal. Thereby, the control device 10 that performs various controls of the electric shielding device can be configured as a computer.

The functions of the control device 10 realized by executing the program by the microcomputer unit 101 include receiving an operation signal, discriminating various commands contained in the operation signal, and performing various controls of the corresponding electric shielding device. While counting the presence or absence of encoder pulses and the number of encoder pulses through pulse detection units 109a and 109b that respectively receive pulse signals from encoders 8A and 8B, the count value is stored in storage unit 102 as appropriate. a function to store and manage various settings related to the upper limit setting position and lower limit setting position of each shielding material that can be set according to the count value of the number of encoder pulses in the storage unit 102; driving the motors 9A and 9B function to drive and control the motors 9A and 9B via the motor drive units 107a and 107b, respectively, and abnormal values in the motor drive units 107a and 107b (one or more of overcurrent/abnormal waveform current/abnormal waveform voltage ) are detected and notified to the microcomputer unit 101, the abnormal values are monitored through the abnormality detection units 108a and 108b.

(Simultaneous raising and lowering operation of shielding materials in multiple stages)
By the way, in the conventional electric pleated screen in which the upper screen 6U and the lower screen 6L are vertically connected and suspended, the operator uses a wired switch or a remote controller to press a raise button for raising operation and a lower button for lowering operation. , and the stop button for stopping the lifting operation, and to perform the lifting operation of the upper screen and the lower screen, if the operation of either the upper screen or the lower screen has not stopped, the operation of the other starts. It had become a thing not to do. For this reason, in the conventional technique, when it is desired to raise or lower all of the shielding members in multiple stages, the time required for the lifting and lowering is long, and there is a demand that the operation is troublesome for some operators. .

Therefore, in the electric pleated screen according to the present embodiment, a control device is provided so that the upper screen 6U and the lower screen 6L can be raised or lowered simultaneously while allowing the respective desired stop positions of the upper screen 6U and the lower screen 6L. 10 is to be controlled.

Hereinafter, the ascending control of the control device 10 that allows the upper screen 6U and the lower screen 6L to be raised simultaneously and the lowering control of the control device 10 that allows the upper screen 6U and the lower screen 6L to be lowered simultaneously will be described in order.

(Upward control that enables simultaneous upward operation of multiple levels of shielding material)
FIG. 4 is a flow chart showing an example of raising control of the shielding material (upper screen 6U and lower screen 6L) by the control device 10 in the electric shielding device of one embodiment according to the present invention, and FIGS. 5(a) to 5(d). [Fig. 2] is a schematic front view of the electric shielding device for explaining the operation of the lift control;

First, as shown in FIG. 5A, for example, when the control device 10 receives a lift command while the operation of the upper shielding member (upper screen 6U) and the lower shielding member (lower screen 6L) is stopped (step S1), As shown in 5(b), only the upper shielding member (upper screen 6U) starts to rise (step S2).

While the upper shielding material (upper screen 6U) is being raised, the control device 10 monitors whether or not it has received a further raising command and whether or not it has received a stop command (steps S3 and S5).

When the control device 10 receives a further rise command prior to the stop command (step S3: Y), the control device 10 simultaneously raises the lower shielding material (lower screen 6L) as shown in FIG. 5(c). start (step S4).

On the other hand, when no further rise command is received (step S3: N) and no stop command is received (step S5: N), the control device 10 determines that the upper shielding material (upper screen 6U) is at its upper limit. Until the position is reached and stopped, under the upward movement of the upper shielding material (upper screen 6U), continue to monitor whether a further rise command is received and whether a stop command is received ( Steps S3, S5).

When the control device 10 receives a stop command (step S5: Y), regardless of whether or not the lower shielding member (lower screen 6L) is simultaneously moving upward through step S4, the upper shielding member Only (upper screen 6U) is stopped from rising (step S6).

It should be noted that if the control device 10 receives a further rise command through step S4 when the lower shielding member (lower screen 6L) is not simultaneously rising, it causes the upper shielding member (upper screen 6U) to rise. In order to control it to stop, individual lifting control of the upper shielding material (upper screen 6U) is possible. Further, when the upper shielding material (upper screen 6U) reaches the upper limit position without receiving a further rise command under the upward movement of the upper shielding material (upper screen 6U), the control device 10 moves the upper shielding material (upper screen 6U) control to stop the rising motion of

Subsequently, as shown in FIG. 5(d), after the upper shielding member (upper screen 6U) stops rising, the control device 10 goes through step S4 to raise the lower shielding member (lower screen 6L). The lower shielding material (lower screen 6L) is stopped based on whether or not a further stop command is received and the count value of each encoder pulse number from the encoders 8A and 8B. It is monitored whether the upper shielding material (upper screen 6U) and the same position are within a predetermined range (step S7). When the lower shielding material (lower screen 6L) does not move upward at the same time through step S4, both the upper shielding material (upper screen 6U) and the lower shielding material (lower screen 6L) are stopped. Since the control device 10 is in the state of

In step S7, after the upper shielding member (upper screen 6U) stops rising, the control device 10 further stops the lower shielding member (lower screen 6L) during the upward movement through step S4. When it is determined that the lower shielding member (lower screen 6L) has reached the same position as the stopped upper shielding member (upper screen 6U) within a predetermined range without receiving a command (step S7: Y), the lower The shielding material (lower screen 6L) also stops rising (step S8).

Further, in step S7, the control device 10 issues a further stop command before the lower shielding member (lower screen 6L) reaches the same position as the stopped upper shielding member (upper screen 6U) within a predetermined range. is received, the lower shielding material (lower screen 6L) also stops its upward movement (step S8).

When the operator raises each shielding material (each screen and each rail) with the wired switch 21, the wireless remote controller 22, or the infrared remote controller 23, the operator presses the "△ button" as shown in FIG. A command can be transmitted, and when performing an operation to stop the upward movement, a stop command can be transmitted by pressing the "□ button" as shown in FIG.

Then, according to this embodiment, by simply operating the "△ button" and "□ button", each of the plurality of shielding materials (the upper screen 6U and the lower screen 6L) can be stopped at desired positions. , it is possible to simultaneously perform the upward movement of the shielding materials (the upper screen 6U and the lower screen 6L) in multiple stages.

(Descent control that enables simultaneous descent operation of multiple levels of shielding material)
FIG. 6 is a flow chart showing an example of lowering control of the shielding material (the upper screen 6U and the lower screen 6L) by the control device 10 in the electric shielding device of one embodiment according to the present invention, and FIGS. 7(a) to 7(d). [FIG. 2] is a schematic front view for explaining the operation of the electric shielding device during the downward control;

First, as shown in FIG. 7A, for example, the control device 10 receives a lowering command while the upper shielding member (upper screen 6U) and the lower shielding member (lower screen 6L) are stopped (step S11). As shown in 7(b), only the lower shielding material (lower screen 6L) starts to descend (step S12).

While the lower shielding material (lower screen 6L) is being lowered, the control device 10 monitors whether a further lowering command is received and whether a stop command is received (steps S13 and S15).

When the controller 10 receives a further lowering command prior to the stop command (step S13: Y), the upper shielding material (upper screen 6U) is simultaneously lowered as shown in FIG. 7(c). start (step S14).

On the other hand, when no further lowering command is received (step S13: N) and no stop command is received (step S15: N), the control device 10 determines that the lower shielding material (lower screen 6L) is at its lower limit. Until the position is reached and stopped, under the downward movement of the lower shielding material (lower screen 6L), it continues to monitor whether a further lowering command is received and whether a stop command is received ( Steps S13, S15).

When the control device 10 receives a stop command (step S15: Y), irrespective of whether or not the upper shielding material (upper screen 6U) is simultaneously moving down through step S14, the lower shielding material Only (lower screen 6L) is stopped from rising (step S16).

It should be noted that the control device 10 moves down the lower shielding material (lower screen 6L) if a further lowering command is received through step S14 when the upper shielding material (upper screen 6U) is not simultaneously lowered. A separate lowering control of the lower shield (lower screen 6L) is possible to control to stop. In addition, when the lower shielding material (lower screen 6L) reaches the lower limit position without receiving a further lowering command under the downward movement of the lower shielding material (lower screen 6L), the control device 10 controls the lower shielding material (lower screen 6L) control to stop the descending motion of

Subsequently, after the lower shielding member (lower screen 6L) stops descending as shown in FIG. The upper shielding material (upper screen 6U) is stopped based on whether or not a further stop command has been received and the count value of each encoder pulse number from the encoders 8A and 8B. It is monitored whether the lower shielding material (lower screen 6L) and the same position are within a predetermined range (step S17). When the upper shielding member (upper screen 6U) does not move down at the same time through step S14, both the upper shielding member (upper screen 6U) and the lower shielding member (lower screen 6L) are stopped. Since the control device 10 is in the state of

In step S17, after the lower shielding member (lower screen 6L) stops descending, the control device 10 further stops the upper shielding member (upper screen 6U) through step S14 while the upper shielding member (upper screen 6U) is descending. When it is determined that the upper shielding material (upper screen 6U) has reached the same position as the stopped lower shielding material (lower screen 6L) within a predetermined range without receiving a command (step S17: Y), the upper shielding material (upper screen 6U) The shielding material (upper screen 6U) also stops descending (step S18).

Further, in step S17, the control device 10 issues a further stop command before the upper shielding member (upper screen 6U) reaches the same position as the stopped lower shielding member (lower screen 6L) within a predetermined range. is received, the upper shielding member (upper screen 6U) also stops the downward movement (step S18).

When the operator lowers each shielding material (each screen and each rail) with the wired switch 21, the wireless remote controller 22, or the infrared remote controller 23, the operator presses the "▽ button" as shown in FIG. A command can be transmitted, and when performing an operation to stop the descending motion, a stop command can be transmitted by pressing the "□ button" as shown in FIG.

According to this embodiment, by simply operating the "▽ button" and "□ button", each of the shielding members (upper screen 6U and lower screen 6L) in multiple stages can be stopped at desired positions. , the lowering operation of the shielding material (the upper screen 6U and the lower screen 6L) in multiple stages can be performed simultaneously.

(Obstacle detection control during descent)
The lifting control shown in FIGS. 4 and 6 described above is an electric shielding device configured to detect and set a physical upper limit position and a lower physical lower position by providing a physical detection switch like a conventional electric pleated screen. Apart from this, it can also be applied to an electric shielding device configured to set the movable range of the shielding material at the upper limit position and lower limit position variably set at the operator's desired position. It can also be applied to an electric shielding device equipped with an obstacle detection and stopping device using

On the other hand, as described above, the electric shielding device of the present embodiment is configured to include the clutch-type obstacle detection and stopping device illustrated in FIG. When even one of the lower edges of each shielding material comes into contact with an obstacle during each descending motion of the , the rotation of the drive shaft 2A (or 2B) for raising and lowering the shielding material in contact with the obstacle is mechanically locked. However, if the control device 10 continues to control the rotation of the drive shaft 2A (or 2B), a creep load (load due to sustained stress applied to the drive shaft) occurs on the drive shaft 2A (or 2B). will stop while That is, if the drive of the motor 9A (or 9B) is maintained in spite of the fact that the mechanical "stop" of the drive shaft 2A (or 2B) is operating, power is wasted and the motor 9A (or 9B), which may cause heat generation or damage, so it is necessary to avoid these.

Therefore, in the electric shielding device of the present embodiment, under a configuration that does not require a microswitch as in the conventional technique, the control device 10 controls the abnormal values (overcurrent/abnormal waveform current/ one or more of the abnormal waveform voltages), or by detecting no encoder pulse input for a predetermined time during operation control, grasping the mechanical "stop" by the clutch type obstacle detection stop device, motors 9A, 9B After stopping the drive, in order to alleviate the creep load of the drive shaft 2A (or 2B) that locked the descent of the shielding material in contact with the obstacle and improve the quality, a predetermined number of pulses as the count value of the number of encoder pulses It is controlled to return minutes.

Hereinafter, the obstacle detection control during the lowering operation of the upper screen 6U and the lower screen 6L by the control device 10 and the lowering control immediately after that will be described in order.

FIG. 8 is a flow chart showing an example of obstacle detection control during the lowering operation of the shielding materials (the upper screen 6U and the lower screen 6L) by the control device 10 in the electric shielding device according to one embodiment of the present invention. The control shown in FIG. 8 corresponds to the downward control shown in FIG. 6 as control from the start of the downward movement of the upper shielding material (upper screen 6U) or the lower shielding material (lower screen 6L) until the corresponding stop command is received. can be incorporated.

First, when the controller 10 receives a lowering command and starts lowering the upper shielding material (upper screen 6U) or the lower shielding material (lower screen 6L) (step S21), it counts the number of corresponding encoder pulses. Then, it is monitored whether there is an abnormality in the current or voltage related to the motor drive, or in the drive waveform, or whether an obstacle is detected due to the absence of an encoder pulse input during downward control (step S22).

That is, the control device 10 always monitors whether contact with an obstacle is detected during the lowering operation of the lower shielding material (lower screen 6L) in the case of lowering control of the lower shielding material (lower screen 6L). (Step S23: N), and when contact with an obstacle is detected (Step S23: Y), the downward movement of the lower shielding material (lower screen 6L) is immediately stopped, and at least the creep load of the drive shaft 2A is reduced. The count value of the number of encoder pulses is automatically increased by a predetermined number of pulses until the release position is reached (step S24).

Further, in the case of lowering control of the upper shielding material (upper screen 6U), the control device 10 always monitors whether contact with an obstacle is detected during the lowering operation of the upper shielding material (upper screen 6U). Then (step S25: N), when contact with an obstacle is detected (step S25: Y), the lowering motion of the upper shielding member (upper screen 6U) is immediately stopped, and at least the creep load of the drive shaft 2B is reduced. The count value of the number of encoder pulses is automatically increased by a predetermined number of pulses to the release position and then stopped (step S26).

As a result, the creep load of the drive shaft 2A (or 2B), which locks the lowering of the shielding material in contact with the obstacle, can be alleviated and the quality can be improved.

(Descent control immediately after detecting an obstacle)
FIG. 9 is a flow chart showing an example of lowering control immediately after detecting an obstacle during the lowering operation of the shielding material (upper screen 6U and lower screen 6L) by the control device 10 in the electric shielding device according to one embodiment of the present invention. The control shown in FIG. 9 assumes control when obstacles are removed after the control shown in FIG. Along with the control shown in FIG. 8, the descending control shown in FIG. 6 is performed as control from the start of the downward movement of the upper shielding material (upper screen 6U) or the lower shielding material (lower screen 6L) until the corresponding stop command is received. can be incorporated.

First, the control device 10 stores and retains state information in the storage unit 102 as to whether it is immediately after detecting an obstacle when the operation of the upper shielding material (upper screen 6U) and the lower shielding material (lower screen 6L) is stopped. (Step S31).

When the control device 10 starts moving the upper shielding material (upper screen 6U) or the lower shielding material (lower screen 6L) according to the lowering command, the upper shielding material to be lowered is based on the above state information. It is determined whether or not the material (upper screen 6U) or the lower shielding material (lower screen 6L) is immediately after obstacle detection (step S32).

If it is not immediately after detecting the obstacle (step S32: N), the control device 10 immediately starts the lowering operation of the upper shielding material (upper screen 6U) or the lower shielding material (lower screen 6L) to be lowered ( step S34).

On the other hand, if it is immediately after the obstacle detection (step S32: Y), the control device 10 temporarily moves the upper shielding material (upper screen 6U) or the lower shielding material (lower screen 6L) to be lowered to at least the obstacle detection. It automatically rises by a predetermined number of pulses as the count value of the number of encoder pulses until it reaches the position where the lock of the stopping device is released (step S33), and then starts to descend (step S34).

As a result, even when the shielding members (the upper screen 6U and the lower screen 6L) are lowered immediately after the obstacle is removed after the control shown in FIG. 8, the operation can be performed smoothly and safely.

In the example of control shown in FIG. 8, the shielding material to be controlled is "automatically raised to at least the position where the creep load of the drive shaft is released". It may be "automatic rise to at least the position where the lock of the drive shaft is released". In that case, the control shown in FIG. 9 may be omitted or may not be omitted for safety. That is, depending on the structure of the clutch-type obstacle detection device, "the position where the creep load of the drive shaft is released" and "the position where the lock of the drive shaft is released" may not necessarily match. The "position to unlock the drive shaft" includes "the position to release the creep load of the drive shaft".

Although the present invention has been described with reference to specific embodiments, the present invention is not limited to the above-described embodiments, and can be modified in various ways without departing from the technical idea thereof. For example, the elevating cord in this specification includes a cord-like cord or a tape-like elevating tape. Further, the electric shielding device is not limited to the electric pleated screen described above, and can be applied to other electric blinds such as electric horizontal blinds.

Accordingly, the electrically powered shielding device according to the invention is not limited to the examples of embodiments described above, but only by the description of the claims.

According to the present invention, each of the shielding members (upper screen, lower screen, etc.) arranged in a plurality of stages in the vertical direction can be electrically operated to move up and down at the same time. be.

1 Headbox 2A, 2B Drive shaft 3U Lifting cord for upper screen 3L Lifting cord for lower screen 4 Intermediate rail 5 Support member 6U Upper shielding material (upper screen)
6L lower shielding material (lower screen)
7 bottom rail 8A, 8B encoder 9A, 9B motor 10 control device 11 DC power supply 15 bracket 20A, 20B drive shaft coupler 21 wired switch 22 wireless remote control 23 infrared remote control 24 personal computer (PC)
101 microcomputer section 102 storage section 103 infrared signal receiving section 104 wireless signal transmitting/receiving section 105 wired signal transmitting/receiving section 106 external device interface (IF) section 107a, 107b motor drive section 108a, 108b abnormality detection section 109a, 109b pulse detection section

Claims (8)

An electric shielding device capable of electrically raising and lowering each of a plurality of stages of shielding materials in which an upper shielding material and a lower shielding material are arranged in a vertical direction,
a first elevating means for individually elevating the upper shielding member and the lower shielding member electrically;
a second elevating means for simultaneously elevating the upper shielding material and the lower shielding material electrically;
with
The first elevating means and the second elevating means relate to the elevating operation of the upper shielding member and the lower shielding member, and are included in operation signals from an external device having three types of buttons for raising, lowering, and stopping. 3 types of commands commonly used for lifting and lowering the upper shielding member and the lower shielding member are accepted without identifying the upper shielding member and the lower shielding member corresponding to the 3 types of buttons, and the 3 types of commands are accepted. A motorized shielding device, characterized by comprising control means for performing a predetermined up-and-down control according to the order. When the control means receives a lift command based on the operation of the lift button while the upper shielding member and the lower shielding member are not operating, the control means first starts raising only the upper shielding member, and then the upper shielding member. Allowing a further rise command to be received under the rising motion of the material, when the further rising command is received, the lower shielding member also starts a rising motion at the same time, and the upper shielding member and the lower shielding member operate simultaneously. During, when a stop command based on the operation of the stop button is received, only the upper shielding material stops rising, and a further stop command is received or the lower shielding material is the same as the upper shielding material within a predetermined range. 2. The electric shielding device according to claim 1, wherein control is performed so as to stop the upward movement of the lower shielding member when it reaches the position. wherein the control means stops the upward movement of the upper shielding material when the upper shielding material reaches the upper limit position without receiving the further upward command during the upward movement of the upper shielding material. Item 3. The electric shielding device according to item 2. When the control means receives a lowering command based on the operation of the lowering button while the upper shielding member and the lower shielding member are not operating, first, only the lower shielding member starts lowering the lower shielding member. Allowing a further lowering command to be received while the material is lowering, and when receiving the further lowering command, the upper shielding member also starts lowering simultaneously, and the upper shielding member and the lower shielding member operate simultaneously. In the middle, when a stop command based on the operation of the stop button is received, only the lower shielding member stops descending, and a further stop command is received or the upper shielding member is the same as the lower shielding member within a predetermined range. 2. The electric shielding device according to claim 1, wherein control is performed so as to stop the lowering movement of the upper shielding member when it reaches the position. wherein the control means stops the downward movement of the lower shielding material when the lower shielding material reaches the lower limit position without receiving the further lowering command during the downward movement of the lower shielding material. Item 5. The electric shielding device according to item 4. Each of the upper shielding member and the lower shielding member is configured to be raised and lowered by rotating a drive shaft driven by a motor,
Clutch-type obstacle detection and stopping means for detecting an obstacle that hinders the lowering motion of each of the upper shielding member and the lower shielding member and operating to mechanically lock the rotation of the drive shaft. Motorized shielding device according to any one of claims 1 to 5, characterized in that. After activating the obstacle detection stopping means provided individually for each of the upper shielding material and the lower shielding material, the control means individually for each of the upper shielding material and the lower shielding material, 7. The electric shielding device according to claim 6, further comprising means for automatically raising the driving shaft to a position where the creep load of the driving shaft is released and then stopping the driving shaft. After activating the obstacle detection stopping means provided individually for each of the upper shielding material and the lower shielding material, the control means individually for each of the upper shielding material and the lower shielding material, 8. The electric shielding device according to claim 6 or 7, further comprising means for automatically raising at least to a position for unlocking the drive shaft and stopping.

Images