JP2022060448A - Electric shield device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric shield device allowing cost reduction and quality improvement.

SOLUTION: An electric shield device of the invention rotates a drive shaft (2A) by the driving of a motor (9A) and moves a shield material (6L), and comprises an obstacle detection stopping device (52A or the like) detecting the obstacle and locking mechanically the rotation of the drive shaft, an encoder (9A) for detecting the rotation of the motor and a controller 10 controlling the driving of the motor. The controller determines if the obstacle is present or not, by only monitoring of input of an output value of the encoder, or by only monitoring of an abnormal value regarding the driving of the motor, or by a monitoring result of only one under monitoring of both, or by both monitoring results under monitoring of both; and after determining deciding that the obstacle is present, executes a control to stop the driving of the motor temporarily, drive in a reverse rotation to a position to release the lock or to a prescribed position to release a creep load of the drive shaft and then stop.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to an electric shielding device that moves and controls a shielding material by a driving force of a motor.

The electric shielding device moves the shielding material by rotating the drive shaft by the driving force of the motor and winding or rewinding the elevating cord (including the string-shaped cord or the tape-shaped elevating tape) with the take-up drum. For example, it can be raised and lowered).

In such an electric shielding device, a motor is arranged in a head box, the 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.

Further, in the electric shielding device, when the rail provided at the lower edge of the shielding material comes into contact with an obstacle and cannot be lowered during the lowering operation of the shielding material, the operation of the motor is stopped and the elevating cord is useless. There is known one provided with an obstacle detection stop device that automatically stops rewinding (see, for example, Patent Document 1).

As disclosed in Patent Document 1, in the obstacle detection / stopping device provided in the conventional electric shielding device, the rail provided at the lower edge of the shielding material comes into contact with the obstacle and the elevating cord is loosened. At that time, it has a detector that slides in the headbox due to its slack, and the microswitch is operated by the operation of the detector. Then, the control device provided in the head box detects the operation of the micro switch to perform "obstacle detection", and the control device "stops" the motor.

In this way, the obstacle detection / stopping device provided in the conventional electric shielding device is provided with a micro switch that operates according to the tension state of the elevating cord, and the operation of the micro switch is monitored by the control device to "obstacle". "Detection" and "stopping the motor" are performed. Therefore, the micro switch provided in the obstacle detection / stopping device and the control device are connected by wiring, and the motor and the control device are connected by a motor harness.

JP-A-2007-177584

As disclosed in Patent Document 1 described above, the obstacle detection / stopping device provided in the conventional electric shielding device is provided with a microswitch that operates according to the tension state of the elevating cord, and the control device operates the microswitch. By monitoring, "obstacle detection" and "stop" of the motor are performed. Therefore, the microswitch provided in the obstacle detection / stopping device and the control device are connected by a control cord, and the motor and the control device are connected by a motor harness.

By the way, it is conceivable to use a configuration that does not use a micro switch. However, in order to configure the configuration without using a micro switch, it is necessary to perform a mechanical stop, and if the drive shaft is mechanically locked only by the function of the obstacle detection stop device, a load will be generated on the drive shaft and the load will be applied. It will stop as it occurs. That is, if the motor is maintained to be driven even though the mechanical "stop" with respect to the drive shaft is operating, there is a risk of causing waste of electric power, heat generation of the motor, damage, and the like.

Therefore, an object of the present invention is to provide an electric shielding device capable of reducing the cost and improving the quality in view of the above-mentioned problems.

The electric shielding device of one aspect according to the present invention is an electric shielding device that rotates a drive shaft to move a shielding material by driving a motor, and detects an obstacle that hinders the movement of the shielding material in one direction and drives the shielding material. A clutch-type obstacle detection / stopping device that operates to mechanically lock the rotation of the shaft, an encoder that detects the rotation of the motor, and an output value of the encoder are input and monitored to control the drive of the motor. A control device is provided, and the control device determines the presence or absence of an obstacle only by monitoring the input of the output value of the encoder, and when it is determined from the monitoring result that there is an obstacle, the drive of the motor is stopped. The obstacle detection / stop control means has an obstacle detection / stop control means, and after determining that there is an obstacle based on the result of the monitoring, the motor is temporarily stopped to drive the motor, and the clutch-type obstacle is used. It is characterized in that the motor is re-driven and then stopped in the direction in which the drive shaft is rotated in the reverse direction until the position where the lock of the detection stop device is released or the predetermined position where the creep load of the drive shaft is released. And.

The electric shielding device of one aspect according to the present invention is an electric shielding device that rotates a drive shaft to move a shielding material by driving a motor, and detects an obstacle that hinders the movement of the shielding material in one direction and drives the shielding material. A clutch-type obstacle detection / stopping device that operates to mechanically lock the rotation of the shaft, an encoder that detects the rotation of the motor, and an output value of the encoder are input and monitored to control the drive of the motor. The control device is provided with a control device, and the control device only monitors one or more abnormal values of the overcurrent, abnormal waveform current, and abnormal waveform voltage related to the driving of the motor that occur when the clutch-type obstacle detection / stopping device is operated. When the presence or absence of an obstacle is determined and it is determined from the monitoring result that there is an obstacle, the obstacle detection stop control means for stopping the driving of the motor is provided, and the obstacle detection stop control means is the said. After determining that there is an obstacle based on the monitoring result, the drive of the motor is temporarily stopped to the position where the lock of the clutch type obstacle detection / stopping device is released, or the creep load of the drive shaft is released. It is characterized in that the motor is re-driven and then stopped in a direction in which the drive shaft is rotated in the reverse direction to a predetermined position.

The electric shielding device of one aspect according to the present invention is an electric shielding device that rotates a drive shaft to move a shielding material by driving a motor, and detects an obstacle that hinders the movement of the shielding material in one direction and drives the shielding material. A clutch-type obstacle detection / stopping device that operates to mechanically lock the rotation of the shaft, an encoder that detects the rotation of the motor, and an output value of the encoder are input and monitored to control the drive of the motor. The control device includes a control device, which monitors the input of the output value of the encoder and causes an overcurrent, an abnormal waveform current, and an abnormal waveform related to the driving of the motor that occurs when the clutch-type obstacle detection / stopping device is operated. It monitors abnormal values of one or more of the voltages, determines the presence or absence of obstacles based on whether or not the result of monitoring one of them detects the presence or absence of an obstacle, and uses the result of monitoring one of them to determine the presence or absence of an obstacle. When it is determined that there is an obstacle, the obstacle detection stop control means for stopping the driving of the motor is provided, and the obstacle detection stop control means after determining that there is an obstacle based on the result of the monitoring, The drive shaft is rotated in the reverse direction to a position where the drive of the motor is temporarily stopped and the lock of the clutch-type obstacle detection / stop device is released, or to a predetermined position where the creep load of the drive shaft is released. It is characterized by controlling the motor to be re-driven and then stopped.

The electric shielding device of one aspect according to the present invention is an electric shielding device that rotates a drive shaft to move a shielding material by driving a motor, and detects an obstacle that hinders the movement of the shielding material in one direction and drives the shielding material. A clutch-type obstacle detection / stopping device that operates to mechanically lock the rotation of the shaft, an encoder that detects the rotation of the motor, and an output value of the encoder are input and monitored to control the drive of the motor. The control device includes a control device, which monitors the input of the output value of the encoder and causes an overcurrent, an abnormal waveform current, and an abnormal waveform related to the driving of the motor that occurs when the clutch-type obstacle detection / stopping device is operated. An abnormal value of 1 or more of the voltage is monitored, the presence or absence of an obstacle is determined by whether or not the monitoring results of both of them detect the presence or absence of an obstacle, and the presence or absence of an obstacle is determined from the monitoring results of both of them. The obstacle detection stop control means has an obstacle detection stop control means for stopping the driving of the motor, and the obstacle detection stop control means determines that there is an obstacle based on the result of the monitoring, and then drives the motor. To the position where the lock of the clutch-type obstacle detection / stopping device is released, or to the predetermined position where the creep load of the drive shaft is released, the motor is re-driven in the direction of reverse rotation of the drive shaft. It is characterized in that it controls to stop after that.

According to the present invention, it is possible to reduce the cost of the electric cloaking device and improve the quality.

(A) and (b) are a plan view and a front view which show the schematic structure of the electric shielding device of one Embodiment by this invention, respectively. (A) is a cross-sectional view showing a schematic configuration of a clutch-type obstacle detection / stopping device provided in the electric shielding device of one embodiment according to the present invention, and (b) to (e) are respectively according to the present invention. It is a perspective view which shows the operation of the clutch type obstacle detection stop device provided in the electric shielding device of embodiment. It is a block diagram which shows the schematic structure of the control device in the electric shielding device of one Embodiment by this invention. It is a flowchart which shows the obstacle detection stop control of Example 1 of the control device in the electric shielding device of one Embodiment by this invention. It is a flowchart which shows the obstacle detection stop control of Example 2 of the control device in the electric shielding device of one Embodiment by this invention. It is a flowchart which shows the obstacle detection stop control of Example 3 of the control device in the electric shielding device of one Embodiment by this invention. It is a flowchart which shows the obstacle detection stop control of Example 4 of the control device in the electric shielding device of one Embodiment by this invention.

Hereinafter, an electric shielding device according to an embodiment of the present invention will be described with reference to the drawings. In the specification of the present application, with respect to the front view of the electric shielding device shown in FIG. 1, the upper part in the drawing and the lower part in the drawing are upward (or upper) and downward (or lower) according to the hanging direction of the shielding material, respectively. ), And the left direction in the figure is defined as the left side of the electric shielding device, and the right direction in the figure is defined as the right side of the electric shielding device. Further, in the example described below, the side to be visually recognized is the front side (or the indoor side) and the opposite side is the rear side (or the outdoor side) with respect to the front view of the electric shielding device shown in FIG.

(overall structure)
1A and 1B are a plan view and a front view showing a schematic configuration of an electric shielding device according to an embodiment of the present invention, respectively. As a typical example of the electric shielding device shown in FIG. 1, an electric pleated screen for raising and lowering a shielding material is shown. However, as long as the shielding material is moved by the rotation of the drive shaft, the present invention is not limited to this, and for example, an electric horizontal blind, an electric vertical blind, an electric curtain, or the like may be used.

Further, in the electric pleated screen of one embodiment shown in FIGS. 1 (a) and 1 (b), the upper screen 6U as the upper shielding material and the lower shielding material as the upper shielding material that can be individually raised and lowered by a plurality of types of raising and lowering cords 3U and 3L. Although it is configured to include a lower screen 6L, it may be an electric pleated screen capable of raising and lowering a kind of shielding material by a kind of lifting cord.

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 and supported from the head box 1, and the lower end of the screen 6U is supported by an intermediate rail 4. Attached to the top surface. The head box 1 is fixed to a mounting surface such as a ceiling surface via a bracket 15.

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

The take-up drums 51A and 51B are arranged side by side in front of and behind each of the support members 5 arranged in appropriate places (two places on the left and right in this example) in the head box 1 and are rotatably supported. Cam clutches 52A and 52B are provided at one end in the axial direction of the take-up drums 51A and 51B, respectively. Each take-up drum 51A and cam clutch 52A, and each take-up drum 51B and cam clutch 52B have the same shape.

The upper end of the elevating cord 3L (in this example, a string-shaped cord, but a tape-shaped elevating tape may be used) is attached to each take-up drum 51A so that the elevating cord 3L can be rewound or rewound. In this example, the lower end penetrates the upper screen 6U, the intermediate rail 4, and the lower screen 6L, and is attached to the bottom rail 7. The take-up drum 51A is formed so that the diameter gradually decreases toward one of the axial directions, and in this example, the string-shaped elevating cord 3L is sequentially spirally wound around the take-up drum 51A. There is.

Further, the upper end of the elevating cord 3U (a string-shaped cord in this example, but a tape-shaped elevating tape may be used) is attached to each take-up drum 51B so that the elevating cord 3U can be rewound or rewound. The lower end of the 3U penetrates the upper screen 6U in this example and is attached to the intermediate rail 4. The take-up drum 51B is formed so that the diameter gradually decreases toward one of the axial directions, and in this example, the string-shaped elevating cord 3U is sequentially spirally wound around the take-up drum 51B. There is.

A drive shaft 2A is inserted through the central shaft of each take-up drum 51A and cam clutch 52A, and the cam clutch 52A transmits the rotation of the drive shaft 2A to the take-up drum 51A and drives the drive force of the take-up drum 51A. It is designed to be transmitted to the shaft 2A.

Similarly, a drive shaft 2B is inserted through the central shafts of the take-up drum 51B and the cam clutch 52B, and the cam clutch 52B transmits the rotation of the drive shaft 2B to the take-up drum 51B and drives the take-up drum 51B. The force is transmitted 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 bottom rail 7 can be raised and lowered by rotating the drive shaft 2A with the driving force of the motor 9A and winding or rewinding the elevating cord 3L with the take-up drum 51A based on the rotation of the drive shaft 2A. As a result, the lower screen 6L can be raised and lowered, and the upper screen 6U and the intermediate rail 4 can be raised and lowered. Since the take-up drum 51A uses the tension (the weight of each screen and each rail) related to the elevating cord 3L when the lower screen 6L is lowered, the driving force thereof is the take-up drum 51A via the cam clutch 52A. Is transmitted to the drive shaft 2A, and the driving force related to the drive shaft 2A is adjusted to control the descent.

Further, 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 elevating cord 3U is wound or rewound by the take-up drum 51B based on the rotation of the drive shaft 2B, so that the intermediate rail 4 can be raised and lowered. As a result, the upper screen 6U can be raised and lowered. Since the take-up drum 51B uses the tension related to the elevating cord 3U (the weight of the upper screen 6U and the intermediate rail 4) when the upper screen 6U is lowered, its driving force is taken up via the cam clutch 52B. It is transmitted from the drum 51B to the drive shaft 2A, and the driving force related to the drive shaft 2B is adjusted to control the descent.

The drive control of each of the motors 9A and 9B is performed by the control device 10 arranged in the head box 1. A DC power supply 11 for supplying electric power to the motors 9A and 9B and the control device 10 is arranged in the head box 1. When the control device 10 receives 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), various commands included in the operation signal are displayed. Performs various controls for the corresponding electric shielding device. For example, by configuring the motors 9A and 9B with DC motors, respectively, by controlling the duty ratio of the pulse signals supplied from the control device 10 to the motors 9A and 9B, the control device 10 controls the rotation speeds of the motors 9A and 9B. Can be controlled. Further, encoders 8A and 8B for detecting the rotation speed and rotation amount of the drive shafts 2A and 2B are arranged in the head box 1, and the control device 10 is used for pulse signals output from the encoders 8A and 8B. Based on this, the rotation speed and the rotation amount of the motors 9A and 9B are controlled by managing the speed of the encoder pulse and the count value of the number of pulses. By such an operation, the control device 10 appropriately adjusts the ascending / descending speed of the upper screen 6U or the lower screen 6L in response to various commands included in the operation signal, and also adjusts the ascending / descending speed of the upper screen 6U or the lower screen 6U or the lower part. The ascending / descending stop position of the screen 6L is controlled.

In the electric pleated screen of the present embodiment configured as described above, the intermediate rail 4 is pulled up to just below the head box 1, and the upper screen 6U is folded between the head box 1 and the intermediate rail 4, and the bottom rail is folded. When 7 is lowered, the lower screen 6L is suspended and supported from the head box 1.

Further, when the intermediate rail 4 is lowered to the top of the bottom rail 7 with the bottom rail 7 lowered to the lower limit, the lower screen 6L is folded between the intermediate rail 4 and the bottom rail 7, and the lower screen 6L is folded between the intermediate rail 4 and the head box 1. The upper screen 6U is suspended and supported from the rail 4. Therefore, for example, if the upper screen 6U is used as a daylighting material and the lower screen 6L is used as a light-shielding material, the degree of freedom in adjusting the amount of daylighting can be increased.

Then, if the bottom rail 7 is lowered to the lower limit and the intermediate rail 4 is positioned between the head box 1 and the bottom rail 7, the soft light transmitted through the upper screen 6U made of the daylighting material can be collected. can.

When the bottom rail 7 is pulled up to the upper limit and opened, the bottom rail 7 is pulled up without pulling up 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 be in a state.

(Clutch type obstacle detection stop device)
By the way, when the intermediate rail 4 or the bottom rail 7 comes into contact with an obstacle and its descent is hindered, the clutch-type obstacle detection / stopping device is activated 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 take-up drum 51A and the cam clutch 52A supported by the support member 5, and the take-up drum 51B and the cam clutch 52B each have an "obstacle" to each rail. It functions as a clutch-type obstacle detection / stopping device that mechanically performs "object detection" and "stop" of each drive shaft. That is, the take-up drum 51A and the cam clutch 52A supported by the support member 5, and the take-up drum 51B and the cam clutch 52B are configured as a clutch-type obstacle detection / stopping device as shown in FIG.
Hereinafter, the clutch-type obstacle detection / stopping device will be briefly described.

Since the take-up drum 51B and the cam clutch 52B have the same structure as the take-up drum 51A and the cam clutch 52A, respectively, in FIG. 2A, they are typically supported by the support member 5. A cross-sectional view of the winding drum 51A and the cam clutch 52A that function as a clutch-type obstacle detection / stopping device is shown.

As shown in FIG. 2A, in the clutch-type obstacle detection / stopping device, the take-up drum 51A and the cam clutch 52A are supported by the support portion 50 in the support member 5, and the cam clutch 52A has the rotating drum 53. It is connected to the take-up drum 51A via.

The support member 5 is fixed by fitting a snap fit 501 projecting on the bottom surface of the support member 5 to the head box 1. The cam clutch 52A, the rotary drum 53, and the take-up drum 51A are rotatably supported between the through holes 502 and 503 formed at the left and right ends of the support portion 50. More specifically, the tubular portion 521 of the cam clutch 52A is rotatably supported with respect to the through hole 502, and the pulley cap 54 fitted to the right end of the take-up drum 51A is rotatable with respect to the through hole 503. It is supported by the shaft.

The snap-fit 501 is formed with a take-out port for winding or rewinding the elevating cord 3L from a predetermined position. Further, a braking convex portion 504 is formed on the bottom surface of the left side of the support portion 50 in the drawing.

The take-up drum 51A is formed in a substantially cylindrical shape, and includes an engaging portion 511 and a take-up 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. The drive shaft 2A is rotatably penetrated through the center of the pulley cap 54 fitted to the right end of the take-up drum 51A in the drawing.

A cam clutch 52A is housed inside the engagement portion 511 of the take-up drum 51A in the radial direction. The cam clutch 52A includes a tubular portion 521 formed in a substantially cylindrical shape and a braking portion 522 formed having a diameter larger than that of the tubular portion 521.

The diameter of the outer peripheral surface of the braking portion 522 is set to a size that allows it to slide with the inner peripheral surface of the engaging portion 511 of the take-up drum 51A. One or a plurality of braking claws 523 are formed so as to project in a sawtooth shape at the end portion of the braking portion 522 on the tubular portion 521 side so as to be able to engage with the braking convex portion 504 of the support portion 50.

When the braking claw 523 is prevented from rotating in the circumferential direction by engaging with the braking convex portion 504, the cam clutch 52A is made unable to rotate relative to the support portion 50.

In the cam clutch 52A, the side wall of the braking portion 522 is assembled via the rotary drum 53 so as to be non-rotatable relative to the take-up drum 51A with a predetermined rotational play, and the axis line is within the range of the predetermined rotational play. It has a cam structure that allows relative movement (sliding) along the direction.

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

The rotating drum 53 is formed with a sliding convex portion 531 that projects outward in the radial direction. The rotary drum 53 is assembled to the cam clutch 52A so that the sliding convex portion 531 is located inside the sliding hole 524 of the cam clutch 52A. Relative movement is possible only within the range of relative movement inside.

Specifically, when the sliding convex portion 531 is located at one end of the sliding hole 524, the cam clutch 52A is located most on the take-up pulley 9 side (right side in FIG. 2A), so that the braking claw The engagement state between the 523 and the braking convex portion 504 is released. On the other hand, when the sliding convex portion 531 is located at the other end of the sliding hole 524, the cam clutch 52A slides in the axial direction and moves to the most anti-winding pulley 9 side (left side in FIG. 2A). Since it is positioned, the braking claw 523 and the braking convex portion 504 are in an engaged state.

When the braking claw 523 and the braking convex portion 504 are engaged with each other, the rotation of the cam clutch 52A is prevented, and at this time, the sliding convex portion 531 moved to the other end of the sliding hole 524 also rotates further. The rotation of the rotary drum 53 is stopped, and the rotation of the drive shaft 2A connected to the rotary drum 53 in a relative non-rotatable manner is also stopped.

Therefore, when the cam clutch 52A moves relative to the take-up drum 51A in the axial direction and the braking claw 523 is engaged with the braking convex portion 504, the cam clutch 52A is locked so as not to rotate relative to the support portion 50. To. Further, when the engagement state between the braking claw 523 and the braking convex portion 504 is released, the cam clutch 52A can rotate relative to the support portion 50.

The rotary drum 53 is housed inside the cam clutch 52A in the radial direction, and the rotary drum 53 has a substantially cylindrical shape, has a predetermined rotational play with respect to the take-up drum 51A, cannot rotate relative to each other, and does not move relative to the axial direction. It is attached like this. Further, although the drive shaft 2A penetrates the tubular portion 515 so as to be relatively rotatable, the rotary drum 53 rotates integrally with the drive shaft 2A.

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

In this case, the engagement state between the braking claw 523 of the cam clutch 52A and the braking convex portion 504 of the support portion 50 is released, and the cam clutch 52A can rotate relative to the support portion 50. Then, the rotary drum 53 becomes unable to rotate relative to the cam clutch 52A and the take-up drum 51A when the rotation is equal to or greater than the predetermined rotation play.

Therefore, when the drive shaft 2A is further rotated in the pulling direction, the rotating drum 53 is integrally rotated in the pulling direction together with the cam clutch 52A and the take-up drum 51A, and the shielding material (lower screen 6L) is pulled up. Will be.

On the other hand, when the shielding material (lower screen 6L) is pulled down by the drive shaft 2A, the weight of the lower screen 6L and the bottom rail 7 is used for pulling down, so that the driving force at the time of pulling down is from the take-up drum 51A to the drive shaft 2A. It is transmitted toward.

When the take-up drum 51A and the cam clutch 52A are rotated in the pulling direction, the engagement state between the braking claw 523 of the cam clutch 52A and the braking convex portion 504 of the support portion 50 is released, so that the rotating drum 53 And the drive shaft 2A is immediately transmitted to rotate in the pulling direction.

Here, FIGS. 2 (b) to 2 (e) show FIG. 2 (a) when the bottom rail 7 collides with an obstacle while the shielding material (lower screen 6L) is being pulled down. ), The operation of the take-up drum 51A and the cam clutch 52A, which function as a clutch-type obstacle detection / stopping device, is shown in a schematic diagram. Although the simplified diagram is shown as one braking claw 523 in FIGS. 2D and 2E, a plurality of braking claws 523 can be used.

First, as shown in FIG. 2B, when the shielding material (lower screen 6L) is being pulled down, the elevating cord 3L is wound from the take-up drum 51A before the bottom rail 7 collides with an obstacle. It is returned and the lower screen 6L is lowered. Tension in the pull-out direction is applied to the elevating cord 3L wound around the take-up drum 51A due to the weight of the bottom rail 7, etc., and the take-up drum 51A rotates by its own weight as the cam clutch 52A rotates, so that the drive shaft 2A The rotation control controls the rotation of its own weight. At this time, the sliding convex portion 531 is located at one end of the sliding hole 524, and the cam clutch 52A is located most on the take-up pulley 9 side (right side in FIG. 2A). The engagement state with the braking convex portion 504 is released.

Then, as shown in FIG. 2C, when the bottom rail 7 collides with an obstacle, the tension in the pull-out direction of the elevating cord 3L is lost, and the rotation of the take-up drum 51A is stopped, but the rotating drum 53 and the cam clutch 52A are stopped. And the drive shaft 2A maintains the rotation, so that a rotation difference occurs. However, the rotary drum 53 is rotated relative to the take-up drum 51A only during the predetermined rotational play.

Then, the sliding convex portion 531 is guided to the sliding hole 524, and as shown in FIG. 2D, during the course of the predetermined rotation play of the rotating drum 53 with the rotation stop of the winding drum 51A, The cam clutch 52A starts relative movement (sliding) in the axial direction while rotating.

Then, as shown in FIG. 2 (e), the braking claw 523 in the cam clutch 52A engages with the braking convex portion 504 during the lapse of the predetermined rotational play of the rotating drum 53 as the rotation of the take-up drum 51A stops. By doing so, rotation in the circumferential direction is prevented, and the cam clutch 52A cannot rotate relative to the support portion 50. The rotation of the cam clutch 52A is blocked, and at this time, the sliding convex portion 531 moved to the other end of the sliding hole 524 cannot rotate any further, so that the rotation of the rotating drum 53 is stopped and the rotating drum 53 is stopped. The rotation of the drive shaft 2A, which is connected to the drive shaft 2A so as to be relatively non-rotatable, also stops. In this way, the cam clutch 52A is made unable to rotate 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, in the cam clutch 52A, the side wall of the braking portion 522 is assembled to the take-up drum 51A via the rotary drum 53 so as to be non-rotatable relative to the take-up drum 51A, and the predetermined rotation thereof. Within the range of play, the sliding hole 524 formed in the cam clutch 52A guides the sliding convex portion 531 formed in the rotating drum 53, so that the cam structure can be relatively moved (sliding) along the axial direction. However, the cam structure that mechanically locks the drive shaft 2A is not limited to this example, and the rotation of the drive shaft 2A is mechanically rotated when the rotation of the take-up drum 51A is stopped due to a physical obstacle. Various forms are conceivable, as long as the cam clutch structure is used to stop the vehicle.

For example, instead of the rotary drum 53 and the cam clutch 52A, a cam clutch having a braking claw 523 that can engage with the braking convex portion 504 and a sliding convex portion 531 is formed, and the cam clutch is included in the take-up drum 51A. It can be configured to be supported by a peripheral wall. In this case, the cam clutch has a structure that cannot rotate relative to the drive shaft 2A but allows relative movement (slide movement) within a predetermined range with respect to the take-up drum 51A in the axial direction, and the sliding convex. In order to operate the rotation of the portion 531 in the same manner as the operation illustrated in FIG. 2, a cam clutch structure in which a sliding groove corresponding to the sliding hole 524 is formed on the inner peripheral wall of the take-up drum 51A can be used.

However, when the drive shaft 2A is mechanically locked in this way, the rotation control of the drive shaft 2A is continued, so that a load is generated on the drive shaft 2A and the drive shaft 2A is stopped while the load is generated. That is, if the driving of the motor 9A is maintained even though the mechanical "stop" for the drive shaft 2A is operating, there is a risk of causing waste of electric power, heat generation of the motor 9A, damage, and the like. Occurs.

In summary, the drive shaft 2A is inserted through the central shaft of the take-up drum 51A and the cam clutch 52A, and when the drive shaft 2A rotates, most of the cam clutch 52A is always taken up (when no obstacle is detected). The cam clutch 52A, which is housed inside the drum 51A in the radial direction and engages with the drive shaft 2A, rotates in the same direction, and further uses the tension (the weight of each screen and each rail) related to the elevating cord 3L. While doing so, the take-up drum 51A engaged with the cam clutch 52A rotates in the same direction. As a result, the elevating cord 3L can be wound or rewound by the take-up drum 51A, and the bottom rail 7 can be moved up and down.

However, if there is an obstacle in the descending bottom rail 7, a rotation difference occurs between the rotation of the drive shaft 2A and the rotation of the take-up drum 51A, and the relative rotation between the take-up drum 51A and the drive shaft 2A where the rotation is blocked. A part of the cam clutch 52A, which was in a state where most of it was accommodated inside the take-up drum 51A in the radial direction, slides from the take-up drum 51A so as to protrude in the axial direction of the drive shaft 2A. Then, the braking claw 523 of the cam clutch 52A protruding from the sliding take-up drum 51A engages with the braking convex portion 504 formed on the support member 5 that rotatably supports the take-up drum 51A. The rotation of the drive shaft 2A is mechanically blocked (locked). In consideration of the time when the obstacle disappears, the control device 10 again accommodates most of the cam clutch 52A inside the winding drum 51A in the radial direction, and mechanically rotates the drive shaft 2A. The drive shaft 2A is controlled to rotate in the ascending direction of the bottom rail 7 and then stop to the extent that the blocking state is released.

Similarly, the drive shaft 2B is inserted through the central shaft of the take-up drum 51B and the cam clutch 52B, and when the drive shaft 2B rotates, most of the cam clutch 52B is always the take-up drum (when no obstacle is detected). The cam clutch 52B engaged with the drive shaft 2B rotates in the same direction while being housed inside the 51B in the radial direction, and further, the tension related to the elevating cord 3U (the weight of the upper screen 6U and the intermediate rail 4) is applied. The take-up drum 51B engaged with the cam clutch 52B rotates in the same direction while being used. As a result, the elevating cord 3U can be wound or rewound by the take-up drum 51B, and the intermediate rail 4 can be moved up and down.

However, if there is an obstacle in the descending intermediate rail 4, the elevating cord 3U will slacken, and if the elevating cord 3U has slack, a rotation difference will occur between the rotation of the drive shaft 2B and the rotation of the take-up drum 51B, and the rotation will occur. Based on the relative rotation between the take-up drum 51B and the drive shaft 2B, a part of the cam clutch 52B that was in a state where most of it was accommodated inside the take-up drum 51B in the radial direction was part of the take-up drum. It slides so as to project from 51B in the axial direction of the drive shaft 2B. Then, the braking claw 523 of the cam clutch 52B protruding from the sliding take-up drum 51B engages with the braking convex portion 504 formed on the support member 5 that rotatably supports the take-up drum 51B. The rotation of the drive shaft 2B is mechanically blocked (locked). In consideration of the time when the obstacle disappears, the control device 10 again accommodates most of the cam clutch 52B inside the winding drum 51B in the radial direction, and mechanically rotates the drive shaft 2B. The drive shaft 2B is controlled to rotate in the ascending direction of the intermediate rail 4 and then stop to the extent that the blocking state is released.

Therefore, the electric pleated screen configured as the electric shielding device of the present embodiment is provided with a clutch-type obstacle detection / stopping device that mechanically performs "obstacle detection" for each rail and "stop" of each drive shaft. Be done.

By the way, in the electric shielding device of the present embodiment, each of the motors 9A and 9B and the control device 10 are connected by a motor harness, but the winding drum 51A and the cam clutch 52A supported by each support member 5 are used. Further, since each take-up drum 51B and cam clutch 52B are configured as a clutch-type obstacle detection / stopping device, the micro switch as disclosed in Patent Document 1 is unnecessary.

However, under the configuration that does not require the micro switch, the control device 10 needs to grasp the mechanical "stop" by the clutch-type obstacle detection / stopping device and stop the driving of the motors 9A and 9B. .. That is, if the drive of the motors 9A and 9B is maintained even though the mechanical "stop" for the drive shafts 2A and 2B is operating, power is wasted, the motors 9A and 9B generate heat, or the motors 9A and 9B generate heat. In order to avoid the possibility of causing damage or the like, the control device 10 according to the present embodiment solves this problem by the following configuration and obstacle detection stop control of each embodiment.

(Control device configuration)
FIG. 3 is a block diagram showing a schematic configuration of a control device 10 in the electric shielding device 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 control device 10 is electrically operated corresponding to various commands included in the operation signal. Performs various controls on 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 to control the rotation speed and the amount of rotation of the motors 9A and 9B, and raises and lowers each shielding material (each screen and each rail). The speed is adjusted appropriately, and the ascending / descending stop position of each shielding material is controlled.

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

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 by 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 by a wireless LAN (including short-range wireless communication).

The personal computer (PC) 24 outputs an operation signal to the control device 10 by making a wired connection to the control device 10 (or by making a wireless connection by a wireless LAN).

Here, the operation signal includes an ascending command instructing an ascending operation of each shielding material (each screen and each rail), a descending command instructing a descending operation of each shielding material, and a stop instructing to stop the ascending / descending operation of each shielding material. Includes at least commands and commands to set the upper and lower limits of each shield. Further, the various commands for instructing the raising and lowering of each of these shielding materials can be associated with the "% instruction operation" indicating the opening ratio of each shielding material.

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

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

The wireless signal transmission / reception unit 104 is a functional unit that receives an operation signal from the wireless remote controller 22 and outputs the operation signal to the microcomputer unit 101, enables mutual communication between the microcomputer unit 101 and the wireless remote controller 22, and details the operation. Enables the exchange of various commands.

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

The external device interface (IF) unit 106 is a functional unit that receives an operation signal from an external device such as a PC 24 and outputs the operation signal to the microcomputer unit 101. Mutual communication is possible between them, and detailed commands related to operations can be exchanged.

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

The 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 the motor drive units 107a and 107b, respectively, and notify the microcomputer unit 101. ..

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.

The microcomputer unit 101 reads and executes a program stored in advance in the storage unit 102, and receives the operation signal from the infrared remote controller 23 and the wireless signal transmission / reception unit 104 that are received via the infrared signal reception unit 103. Accepts 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 a PC 24 received via the external device IF unit 106. , Processes various commands contained in the operation signal. As a result, the control device 10 that performs various controls of the electric shielding device can be configured as a computer.

Then, for the function of the control device 10 realized by the execution of the program by the microcomputer unit 101, the operation signal is received, various commands included in the operation signal are discriminated, and various controls of the corresponding electric shielding device are performed. The function, the presence / absence of an encoder pulse and the number of encoder pulses are counted via the pulse detection units 109a and 109b that receive the pulse signals from the encoders 8A and 8B, respectively, and the count value is appropriately stored in the storage unit 102. 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, and the drive of the motors 9A and 9B. The function of controlling the drive of the motors 9A and 9B via the motor drive units 107a and 107b, respectively, and one or more of the abnormal values (overcurrent / abnormal waveform current / abnormal waveform voltage) in the motor drive units 107a and 107b. ) Are detected and notified to the microcomputer unit 101, respectively, and the function of monitoring the abnormal value is included via the abnormality detecting units 108a and 108b.

Hereinafter, the obstacle detection stop control of each embodiment performed by the microcomputer unit 101 in the control device 10 will be described in order. Further, in the description of each embodiment, as a representative, the output of the encoder 8A is monitored, the drive shaft 2A is rotated by the driving force of the motor 9A, and the elevating cord 3L is set to the winding drum based on the rotation of the drive shaft 2A. An obstacle detection stop control when the lower screen 6U and the bottom rail 7 are lowered by winding or rewinding with 51A will be described. However, the output of the encoder 8B is monitored and an obstacle is caused by the drive control of the motor 9B. The same applies to the case of performing detection stop control.

(Obstacle detection stop control of Example 1)
FIG. 4 is a flowchart showing obstacle detection stop control according to the first embodiment of the control device in the electric shielding device according to the present invention. In the obstacle detection / stop control of the first embodiment, the microcomputer unit 101 in the control device 10 performs obstacle detection / stop control based on the presence / absence of the encoder pulse output from the encoder 8A via the pulse detection unit 109a. Yes, in this embodiment, the control device 10 may not be provided with the abnormality detection units 108a and 108b.

First, the control device 10 starts the drive control of the motor 9A in response to the reception of the lowering command by the microcomputer unit 101, and starts the lowering operation of the shielding material (lower screen 6U and bottom rail 7 in this example). (Step S1).

With the start of the lowering operation of the shielding material, the control device 10 starts counting the encoder pulse output from the encoder 8A via the pulse detection unit 109a by the microcomputer unit 101 (step S2).

Subsequently, the control device 10 monitors the presence / absence of the input of the encoder pulse output from the encoder 8A via the pulse detection unit 109a by the microcomputer unit 101 (step S3), and when there is an input of the encoder pulse, (Step S3: No), the process proceeds to step S4, and when there is no encoder pulse input (step S3: Yes), the process proceeds to step S6.

When there is an encoder pulse input (step S3: No), the control device 10 considers that the mechanical "stop" by the clutch-type obstacle detection / stopping device related to the drive shaft 2A has not been performed, and the control device 10 determines. The microcomputer unit 101 monitors whether or not the lower limit setting position has been reached without receiving the stop command (step S4), and if there is no stop command and the lower limit setting position has not been reached (step S4: No). , When the stop command is received or the lower limit setting position is reached (step S4: Yes), the drive control of the motor 9A is stopped, and the lowering operation of the shielding material is stopped. (Step S5).

On the other hand, when there is no input of the encoder pulse (step S3: Yes), it is considered that the mechanical "stop" by the clutch-type obstacle detection / stopping device related to the drive shaft 2A is performed, and the control device 10 Stops the drive control of the motor 9A by the microcomputer unit 101, and stops the lowering operation of the shielding material (step S6). By incorporating the controls of steps S2 and S3, it is possible to grasp the mechanical "stop" by the clutch-type obstacle detection / stopping device related to the drive shaft 2A and stop the driving of the motor 9A. It is possible to reduce the cost and improve the quality under the configuration that does not require the micro switch disclosed in 1.

After that, the control device 10 automatically raises the shielding material to at least a position where the obstacle detection / stopping device is unlocked by the microcomputer unit 101 (step S7), and when the position at which the lock is released is reached, the motor is motorized. The drive control of 9A is stopped, and the ascending operation of the shielding material is stopped (step S8). By incorporating the control of steps S7 and S8, the creep load of the drive shaft 2A (load due to the continuous stress applied to the drive shaft 2A) can be alleviated, and the quality can also be improved by this.

As described above, the control device 10 has the clutch-type obstacle detection related to the drive shaft 2A under the configuration in which the micro switch disclosed in Patent Document 1 is not required by the obstacle detection stop control of the first embodiment. It is possible to grasp the mechanical "stop" by the stop device and stop the drive of the motor 9A, and similarly, the mechanical "stop" by the clutch type obstacle detection stop device related to the drive shaft 2B. It can be grasped, the drive of the motor 9B can be stopped, and the creep load can be alleviated. As a result, in the electric shielding device according to the present embodiment, the micro switch as disclosed in Patent Document 1 is unnecessary, and the wiring from the micro switch to the control device 10 and the control device 10 are the same. It is possible to improve the quality by eliminating the need for a detection circuit that detects the operation of the micro switch. That is, the obstacle detection / stop control of the first embodiment reduces the load on the drive shaft even when the drive shaft is mechanically locked only by the function of the clutch-type obstacle detection / stop device, and the power of the motor is reduced. Waste, heat generation of the motor, damage, etc. can be avoided.

Further, in the obstacle detection / stopping device that functions via the microswitch in the conventional technique, the component of the microswitch, the microswitch to the control device, is compared with the obstacle detection / stopping device in the shielding device such as the blind of manual operation. There is also a problem that the cost of parts and production increases because a detection circuit for detecting the operation of a micro switch is required in the wiring and the control device. Further, when a dedicated switch or sensor is provided to detect the upper limit position or the lower limit position of the shielding material, a detection circuit for detecting the operation thereof is required, and the cost related to parts and production increases. There is also. In the electric shielding device according to the present embodiment, these problems can also be solved.

(Obstacle detection stop control of Example 2)
FIG. 5 is a flowchart showing obstacle detection stop control of the second embodiment of the control device in the electric shielding device of one embodiment according to the present invention. In the obstacle detection stop control of the second embodiment, the microcomputer unit 101 in the control device 10 causes an abnormal value (one or more of overcurrent / abnormal waveform current / abnormal waveform voltage) in the motor drive unit 107a via the abnormality detection unit 108a. ) Is detected to perform obstacle detection stop control, which is the same as that of the first embodiment shown in FIG. 4 except that steps S2 and S3 are replaced with steps S2a and S3a, respectively. ..

First, the control device 10 starts the drive control of the motor 9A in response to the reception of the lowering command by the microcomputer unit 101, and starts the lowering operation of the shielding material (lower screen 6U and bottom rail 7 in this example). (Step S1). In this example as well, the control device 10 starts counting the encoder pulse output from the encoder 8A via the pulse detection unit 109a by the microcomputer unit 101 with the start of the lowering operation of the shielding material. Since this is an example not used for grasping the mechanical "stop" by the clutch-type obstacle detection / stopping device, the illustration is omitted.

With the start of the descent operation of the shielding material, the control device 10 is subjected to the presence or absence of an abnormality in the current or voltage related to the motor drive or the drive waveform by the microcomputer unit 101, that is, the motor drive unit 107a via the abnormality detection unit 108a. The abnormal value (one or more of the overcurrent / abnormal waveform current / abnormal waveform voltage) in is monitored (step S2a).

Then, when the microcomputer unit 101 does not have an abnormal value (one or more of the overcurrent / abnormal waveform current / abnormal waveform voltage) in the motor drive unit 107a via the abnormality detecting unit 108a, the control device 10 has (step S3a). : No), the process proceeds to step S4, and if the abnormal value exists (step S3a: Yes), the process proceeds to step S6.

When there is no abnormal value (step S3a: No), it is considered that the mechanical "stop" by the clutch-type obstacle detection / stopping device related to the drive shaft 2A has not been performed, and the control device 10 is set to micro. The computer unit 101 monitors whether or not the lower limit setting position has been reached without receiving the stop command (step S4), and if there is no stop command and the lower limit setting position has not been reached (step S4: No). When the process proceeds to step S3a and the stop command is received or the lower limit setting position is reached (step S4: Yes), the drive control of the motor 9A is stopped and the lowering operation of the shielding material is stopped (step S4: Yes). Step S5).

On the other hand, when the abnormal value is present (step S3a: Yes), it is considered that the mechanical "stop" by the clutch-type obstacle detection / stopping device related to the drive shaft 2A is performed, and the control device 10 , The microcomputer unit 101 stops the drive control of the motor 9A, and stops the lowering operation of the shielding material (step S6). By incorporating the control of steps S2a and S3a, it is possible to grasp the mechanical "stop" by the clutch-type obstacle detection / stopping device related to the drive shaft 2A and stop the driving of the motor 9A. It is possible to reduce the cost and improve the quality under the configuration that does not require the micro switch disclosed in 1.

After that, the control device 10 automatically raises the shielding material to at least a position where the obstacle detection / stopping device is unlocked by the microcomputer unit 101 (step S7), and when the position at which the lock is released is reached, the motor is motorized. The drive control of 9A is stopped, and the ascending operation of the shielding material is stopped (step S8). By incorporating the control of steps S7 and S8, the creep load of the drive shaft 2A (load due to the continuous stress applied to the drive shaft 2A) can be alleviated, and the quality can also be improved by this.

As described above, the control device 10 has the clutch-type obstacle detection related to the drive shaft 2A under the configuration in which the micro switch disclosed in Patent Document 1 is not required by the obstacle detection stop control of the second embodiment. It is possible to grasp the mechanical "stop" by the stop device and stop the drive of the motor 9A, and similarly, the mechanical "stop" by the clutch type obstacle detection stop device related to the drive shaft 2B. It can be grasped, the drive of the motor 9B can be stopped, and the creep load can be alleviated. This makes it possible to improve the quality, further eliminates the need for a microswitch as disclosed in Patent Document 1, wiring from the microswitch to the control device 10, and the control device 10 for the microswitch. It is also possible to configure an electric shielding device and a control device 10 thereof, which eliminates the need for a detection circuit for detecting operation and reduces costs related to parts and production.

(Obstacle detection stop control of Example 3)
FIG. 6 is a flowchart showing obstacle detection stop control according to the third embodiment of the control device in the electric shielding device according to the present invention. In the obstacle detection stop control of the third embodiment, the presence / absence of the encoder pulse output from the encoder 8A via the pulse detection unit 109a by the microcomputer unit 101 in the control device 10 and the motor drive unit via the abnormality detection unit 108a. This is an example in which an abnormal value (one or more of overcurrent / abnormal waveform current / abnormal waveform voltage) in 107a is detected to perform obstacle detection stop control, and the step is compared with Example 2 shown in FIG. This is the same except that S2a and S3a are replaced by steps S2b and S3b, respectively.

First, the control device 10 starts the drive control of the motor 9A in response to the reception of the lowering command by the microcomputer unit 101, and starts the lowering operation of the shielding material (lower screen 6U and bottom rail 7 in this example). (Step S1).

With the start of the descent operation of the shielding material, the control device 10 starts counting the encoder pulse output from the encoder 8A via the pulse detection unit 109a by the microcomputer unit 101, and is related to the motor drive. The presence or absence of an abnormality in the current or voltage, or the drive waveform, that is, the abnormal value (one or more of the overcurrent / abnormal waveform current / abnormal waveform voltage) in the motor drive unit 107a is monitored via the abnormality detection unit 108a (step S2b). ..

Then, when the microcomputer unit 101 does not detect either "no encoder pulse input" from the encoder 8A or "with an abnormal value" in the motor drive unit 107a via the abnormality detection unit 108a, the control device 10 does not detect either. (Step S3b: No), the process proceeds to step S4, and when either "no encoder pulse input" or the "abnormal value exists" is detected (step S3b: Yes), the process proceeds to step S6. ..

When neither the "no encoder pulse input" nor the "abnormal value" is detected (step S3b: No), a mechanical "stop" is performed by the clutch-type obstacle detection / stopping device related to the drive shaft 2A. The control device 10 monitors by the microcomputer unit 101 whether or not the lower limit setting position has been reached without receiving the stop command (step S4), and the lower limit setting without the stop command. When the position has not been reached (step S4: No), the process proceeds to step S3b, and when the stop command is received or the lower limit setting position is reached (step S4: Yes), the motor 9A is driven. The control is stopped, and the lowering operation of the shielding material is stopped (step S5).

On the other hand, when either "no encoder pulse input" or "abnormal value" is detected (step S3b: Yes), the machine by the clutch-type obstacle detection / stopping device related to the drive shaft 2A. The control device 10 stops the drive control of the motor 9A by the microcomputer unit 101, and stops the lowering operation of the shielding material (step S6). By incorporating the control of steps S2b and S3b, it is possible to grasp the mechanical "stop" by the clutch-type obstacle detection / stopping device related to the drive shaft 2A and stop the driving of the motor 9A. It is possible to reduce the cost and improve the quality under the configuration that does not require the micro switch disclosed in 1.

After that, the control device 10 automatically raises the shielding material to at least a position where the obstacle detection / stopping device is unlocked by the microcomputer unit 101 (step S7), and when the position at which the lock is released is reached, the motor is motorized. The drive control of 9A is stopped, and the ascending operation of the shielding material is stopped (step S8). By incorporating the control of steps S7 and S8, the creep load of the drive shaft 2A (load due to the continuous stress applied to the drive shaft 2A) can be alleviated, and the quality can also be improved by this.

As described above, the control device 10 has the clutch-type obstacle detection related to the drive shaft 2A under the configuration that the micro switch disclosed in Patent Document 1 is not required by the obstacle detection stop control of the third embodiment. It is possible to grasp the mechanical "stop" by the stop device and stop the drive of the motor 9A, and similarly, the mechanical "stop" by the clutch type obstacle detection stop device related to the drive shaft 2B. It can be grasped, the drive of the motor 9B can be stopped, and the creep load can be alleviated. This makes it possible to improve the quality, further eliminates the need for a microswitch as disclosed in Patent Document 1, wiring from the microswitch to the control device 10, and the control device 10 for the microswitch. It is also possible to configure an electric shielding device and a control device 10 thereof, which eliminates the need for a detection circuit for detecting operation and reduces costs related to parts and production.

Further, according to the obstacle detection stop control of the third embodiment, both the "no encoder pulse input" and the "abnormal value" are monitored, and when the earlier is detected, the motor 9A (or the motor 9A) is immediately detected. Since the drive of 9B) can be stopped, the responsiveness is excellent.

(Obstacle detection stop control of Example 4)
FIG. 7 is a flowchart showing obstacle detection stop control according to the fourth embodiment of the control device in the electric shielding device according to the present invention. In the obstacle detection / stop control of the fourth embodiment, the presence / absence of the encoder pulse output from the encoder 8A via the pulse detection unit 109a by the microcomputer unit 101 in the control device 10 and the motor drive unit via the abnormality detection unit 108a. This is a modified example in which an abnormal value (one or more of overcurrent / abnormal waveform current / abnormal waveform voltage) in 107a is detected to perform obstacle detection stop control, and is compared with Example 3 shown in FIG. This is the same except that step S3b is replaced with step S3c, respectively.

First, the control device 10 starts the drive control of the motor 9A in response to the reception of the lowering command by the microcomputer unit 101, and starts the lowering operation of the shielding material (lower screen 6U and bottom rail 7 in this example). (Step S1).

With the start of the descent operation of the shielding material, the control device 10 starts counting the encoder pulse output from the encoder 8A via the pulse detection unit 109a by the microcomputer unit 101, and is related to the motor drive. The presence or absence of an abnormality in the current or voltage, or the drive waveform, that is, the abnormal value (one or more of the overcurrent / abnormal waveform current / abnormal waveform voltage) in the motor drive unit 107a is monitored via the abnormality detection unit 108a (step S2b). ..

Then, when the microcomputer unit 101 does not detect both "no encoder pulse input" from the encoder 8A and "with an abnormal value" in the motor drive unit 107a via the abnormality detection unit 108a, the control device 10 does not detect both. (Step S3c: No), the process proceeds to step S4, and when both the “no encoder pulse input” and the “abnormal value exist” are detected (step S3c: Yes), the process proceeds to step S6.

When neither the "no encoder pulse input" nor the "abnormal value" is detected (step S3c: No), a mechanical "stop" is performed by the clutch-type obstacle detection / stopping device related to the drive shaft 2A. The control device 10 monitors by the microcomputer unit 101 whether or not the lower limit setting position has been reached without receiving the stop command (step S4), and the lower limit setting without the stop command. When the position has not been reached (step S4: No), the process proceeds to step S3c, and when the stop command is received or the lower limit setting position is reached (step S4: Yes), the motor 9A is driven. The control is stopped, and the lowering operation of the shielding material is stopped (step S5).

On the other hand, when both "no encoder pulse input" and "abnormal value exist" are detected (step S3c: Yes), the clutch-type obstacle detection / stopping device related to the drive shaft 2A is mechanical. Assuming that "stopping" has been performed, the control device 10 stops the drive control of the motor 9A by the microcomputer unit 101, and stops the lowering operation of the shielding material (step S6). By incorporating the control of steps S2b and S3c, it is possible to grasp the mechanical "stop" by the clutch-type obstacle detection / stopping device related to the drive shaft 2A and stop the driving of the motor 9A. It is possible to reduce the cost and improve the quality under the configuration that does not require the micro switch disclosed in 1.

After that, the control device 10 automatically raises the shielding material to at least a position where the obstacle detection / stopping device is unlocked by the microcomputer unit 101 (step S7), and when the position at which the lock is released is reached, the motor is motorized. The drive control of 9A is stopped, and the ascending operation of the shielding material is stopped (step S8). By incorporating the control of steps S7 and S8, the creep load of the drive shaft 2A (load due to the continuous stress applied to the drive shaft 2A) can be alleviated, and the quality can also be improved by this.

As described above, the control device 10 has the clutch-type obstacle detection related to the drive shaft 2A under the configuration that the micro switch disclosed in Patent Document 1 is not required by the obstacle detection stop control of the fourth embodiment. It is possible to grasp the mechanical "stop" by the stop device and stop the drive of the motor 9A, and similarly, the mechanical "stop" by the clutch type obstacle detection stop device related to the drive shaft 2B. It can be grasped, the drive of the motor 9B can be stopped, and the creep load can be alleviated. This makes it possible to improve the quality, further eliminates the need for a microswitch as disclosed in Patent Document 1, wiring from the microswitch to the control device 10, and the control device 10 for the microswitch. It is also possible to configure an electric shielding device and a control device 10 thereof, which eliminates the need for a detection circuit for detecting operation and reduces costs related to parts and production.

Further, according to the obstacle detection stop control of the fourth embodiment, both the "no encoder pulse input" and the "abnormal value" are monitored, and when both are detected, the motor 9A (or 9B) is used. Since the drive can be stopped, the malfunction resistance is excellent.

Although the present invention has been described above with reference to examples of specific embodiments, the present invention is not limited to the examples of the above-described embodiments, and can be variously modified without departing from the technical idea. For example, the elevating cord in the specification of the present application includes a string-shaped cord or a tape-shaped elevating tape. Further, the electric shielding device is not limited to the electric pleated screen described above, and if a clutch-type obstacle detection / stopping device such as an electric horizontal blind can be applied, the control device 10 stops the obstacle detection. Control can be realized.

Further, in the control device 10 described above, the detection of "no encoder pulse input" from the encoder 8A, the detection of "with an abnormal value" in the motor drive unit 107a via the abnormality detection unit 108a, and the detection of "abnormal value" from the encoder 8B. The function of stopping the drive of the corresponding motors 9A and 9B by detecting "no encoder pulse input" or "with abnormal value" in the motor drive unit 107b via the abnormality detection unit 108b is an obstacle. Not limited to the time of detection, it can also function as an upper limit detecting means for detecting the upper limit position of each shielding material and a lower limit detecting means for detecting the lower limit position of each shielding material.

Therefore, the electric shielding device and the control device 10 thereof according to the present invention are not limited to the examples of the above-described embodiments, but are limited only by the description of the scope of claims.

According to the present invention, the cost of the electric cloaking device provided with the obstacle detection / stopping device is reduced and the quality is improved, which is useful for the application of the electric cloaking device provided with the obstacle detection / stopping device.

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 Shielding material (upper screen)
6L 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 unit 102 Storage unit 103 Infrared signal reception unit 104 Wireless signal transmission / reception unit 105 Wired signal transmission / reception unit 106 External device interface (IF) unit 107a, 107b Motor drive unit 108a, 108b Abnormality detection unit 109a, 109b Pulse detection unit

Claims (4)

It is an electric shielding device that rotates the drive shaft and moves the shielding material by driving a motor.
A clutch-type obstacle detection / stopping device that detects an obstacle that hinders the movement of the shielding material in one direction and operates to mechanically lock the rotation of the drive shaft.
An encoder that detects the rotation of the motor and
It is equipped with a control device that inputs and monitors the output value of the encoder and controls the drive of the motor.
The control device determines the presence or absence of an obstacle only by monitoring the input of the output value of the encoder, and when it is determined from the result of the monitoring that there is an obstacle, the obstacle detection stop control for stopping the driving of the motor. Have a means,
After determining that there is an obstacle based on the result of the monitoring, the obstacle detection stop control means temporarily stops driving the motor and reaches a position where the clutch type obstacle detection stop device is unlocked. Alternatively, an electric shielding device characterized in that the motor is re-driven and then stopped in a direction in which the drive shaft is rotated in the reverse direction to a predetermined position where the creep load of the drive shaft is released. It is an electric shielding device that rotates the drive shaft and moves the shielding material by driving a motor.
A clutch-type obstacle detection / stopping device that detects an obstacle that hinders the movement of the shielding material in one direction and operates to mechanically lock the rotation of the drive shaft.
An encoder that detects the rotation of the motor and
It is equipped with a control device that inputs and monitors the output value of the encoder and controls the drive of the motor.
The control device monitors the presence or absence of an obstacle only by monitoring one or more abnormal values of the overcurrent, abnormal waveform current, and abnormal waveform voltage related to the driving of the motor that occur when the clutch-type obstacle detection / stopping device is operated. It has an obstacle detection stop control means for stopping the driving of the motor when it is determined and it is determined from the monitoring result that there is an obstacle.
After determining that there is an obstacle based on the result of the monitoring, the obstacle detection stop control means temporarily stops driving the motor and reaches a position where the clutch type obstacle detection stop device is unlocked. Alternatively, an electric shielding device characterized in that the motor is re-driven and then stopped in a direction in which the drive shaft is rotated in the reverse direction to a predetermined position where the creep load of the drive shaft is released. It is an electric shielding device that rotates the drive shaft and moves the shielding material by driving a motor.
A clutch-type obstacle detection / stopping device that detects an obstacle that hinders the movement of the shielding material in one direction and operates to mechanically lock the rotation of the drive shaft.
An encoder that detects the rotation of the motor and
It is equipped with a control device that inputs and monitors the output value of the encoder and controls the drive of the motor.
The control device monitors the input of the output value of the encoder and one or more of the overcurrent, abnormal waveform current, and abnormal waveform voltage related to the driving of the motor that occurs when the clutch-type obstacle detection / stopping device is activated. Outlier monitoring is performed, and the presence or absence of an obstacle is determined based on whether or not the monitoring result of one of them detects the presence or absence of an obstacle, and it is determined that there is an obstacle from the monitoring result of either of them. It has an obstacle detection stop control means for stopping the drive of the motor when the motor is driven.
After determining that there is an obstacle based on the result of the monitoring, the obstacle detection stop control means temporarily stops driving the motor and reaches a position where the clutch type obstacle detection stop device is unlocked. Alternatively, an electric shielding device characterized in that the motor is re-driven and then stopped in a direction in which the drive shaft is rotated in the reverse direction to a predetermined position where the creep load of the drive shaft is released. It is an electric shielding device that rotates the drive shaft and moves the shielding material by driving a motor.
A clutch-type obstacle detection / stopping device that detects an obstacle that hinders the movement of the shielding material in one direction and operates to mechanically lock the rotation of the drive shaft.
An encoder that detects the rotation of the motor and
It is equipped with a control device that inputs and monitors the output value of the encoder and controls the drive of the motor.
The control device monitors the input of the output value of the encoder and one or more of the overcurrent, abnormal waveform current, and abnormal waveform voltage related to the driving of the motor that occurs when the clutch-type obstacle detection / stopping device is activated. When an abnormal value is monitored, the presence or absence of an obstacle is determined based on whether or not the monitoring results of both of them detect the presence or absence of an obstacle, and the presence or absence of an obstacle is determined from the monitoring results of both of them. It has an obstacle detection stop control means to stop the drive of the motor,
After determining that there is an obstacle based on the result of the monitoring, the obstacle detection stop control means temporarily stops driving the motor and reaches a position where the clutch type obstacle detection stop device is unlocked. Alternatively, an electric shielding device characterized in that the motor is re-driven and then stopped in a direction in which the drive shaft is rotated in the reverse direction to a predetermined position where the creep load of the drive shaft is released.

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