JP2019078127A - Closing device - Google Patents

Abstract

To provide a remote closing device capable of being post-mounted to a rolling screen.SOLUTION: A closing device 10 is provided that is removably mounted in a state where it is suspended to a chain 3 for operating a hoist type blind. The closing device 10 has a sprocket 11 for engaging with the chain 3, a drive unit 13 for rotation driving the sprocket, a control unit 20 for receiving a signal to control the drive unit wirelessly and a weight 15 for setting a center of gravity 19 of the closing device 10 in vertical lower side of the sprocket.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an apparatus for opening and closing a roll-up type blind (curtain) called a roll screen.

  Patent Document 1 describes providing a roll screen device capable of reliably performing the automatic lowering operation and the positioning operation of the screen. The roll screen device comprises a screen, a winding pipe to which the upper side of the screen is attached, a weight body attached to the lower side of the screen to extend the screen downward, an operation chain, and first and second chains. And a clutch unit disposed between the first support portion and one end of the winding pipe and engaged with the operation chain hanging down from both sides. The clutch unit has a pipe rotating body that rotates integrally with the winding pipe, a drive rotating body that rotates in engagement with the operation chain, and a driven rotating body that can be disengaged from the driving rotating body. .

  A blind is known in which a screen is suspended from a support member and a ball chain which can operate the screen from the support member is suspended. Such roll-up screens (blinds, curtains) are called roll screens, and sometimes called roll blinds or roll curtains.

JP, 2017-160591, A

  Although roll screens incorporating a driving device are known, there is a need for a device that can be retrofitted and that can raise and lower the roll screens remotely without changing the structure of the manual roll screen.

  One aspect of the present invention is an opening / closing device that is detachably mounted in a suspended state on a chain that operates a windup blind. This opening / closing device has a sprocket engaged with a chain, a drive unit for rotationally driving the sprocket, and a weight for setting the center of gravity of the opening / closing device vertically below the sprocket. This opening / closing device can be attached by hanging (hanging) to a chain (ball chain) for manually operating a roll-up type blind (roll screen) via a sprocket which is a driving means of the chain. is there. Therefore, an apparatus for automatically opening and closing the roll screen can be easily retrofitted, without changing the structure of the roll screen.

  The switching device may include a control unit that receives a signal for controlling the drive unit via radio. The roll screen can be remotely opened and closed via a wireless terminal via a dedicated operation terminal or an application (application) running on a general-purpose terminal such as a smart phone. The switchgear may have a control unit that outputs a signal for controlling the drive unit in conjunction with the detection result of at least one of light, sound, temperature, and time. The weight may include a battery for the drive unit.

  The control unit may include a first function of stopping the drive unit when the load of the drive unit reaches a first load for raising the switchgear itself along the chain. The switchgear hangs on the ball chain and rotates the ball chain by the force (load) of the sprocket opposed to its own weight. Therefore, the ball chain does not rotate when the screen reaches the lowering limit or the raising limit and the lifting roller (pipe, support member) stops. For this reason, when trying to further rotate the sprocket, the sprocket tries to cause the switchgear to rise along the ball chain. Therefore, the weight of the switchgear is applied as a load to the sprocket, and the limit of the opening and closing of the roll screen can be detected by detecting the load on the sprocket.

  Furthermore, the control unit stores, for each rotation direction of the sprocket, the first rotation angle at which the load of the drive unit reaches the first load, and before the rotation angle of the sprocket reaches the first rotation angle, the drive unit And the second function of controlling the speed of By stopping the sprockets or reducing the rotational speed before the roll screen is completely raised or lowered, it is possible to reduce the load on the mechanism for raising and lowering the roll screen such as a ball chain and raising and lowering rollers.

The figure which shows the state which attached the switching device to the roll screen. Fig.2 (a) is a figure which shows the external appearance of opening / closing device, FIG.2 (b) is sectional drawing which shows schematic structure of opening / closing device. The flowchart which shows an example of control of a switching device.

  FIG. 1 shows the opening / closing device 10 mounted on a roll screen 1 which is a roll-up type blind. The roll screen 1 is a cloth screen (blind or curtain) 2 extending downward (vertically downward) from a winding roller 9 and for rotating the roller 9 to wind the screen 2 up or down. A chain (ball chain) 3 is included. The opening and closing device 10 has a housing 17 incorporating a drive mechanism and the like, and a sprocket 11 provided so as to be exposed to the outside of the housing 17. The opening / closing device 10 is suspended (hanged) from the lower end of the ball chain 3 by attaching the sprocket 11 to engage (engage) with the U-shaped portion of the lower end of the ball chain 3 , Can be detachably mounted on the roll screen 1.

  In FIG. 2A, the switching device 10 is extracted and shown, and in FIG. 2B, a schematic configuration of the switching device 10 is shown using a cross section. The opening and closing device 10 includes a sprocket 11 meshing with a ball chain 3 in which a plurality of balls 3a are connected by a wire 3b, and a housing 17 connected with the sprocket 11 and a drive shaft 12. The housing 17 includes a drive unit 13 that rotationally drives the sprocket 11 through the drive shaft 12, a control unit 20 that controls the drive unit 13, a battery serving as a power supply for driving the drive unit 13 and the control unit 20 And 16) and a weight (weight) 15. One example of the drive unit 13 is a geared motor, and the built-in stepping motor can turn the sprocket 11 in a predetermined direction by a predetermined angle (rotational angle). Furthermore, torque monitoring or torque control can be performed by performing current monitoring or current control.

  The weight 15 is disposed together with the battery 16 so that the center of gravity 19 of the opening / closing device 10 is set below the vertical direction 18 of the sprocket 11. By setting the center of gravity 19 in the vertical direction 18 of the sprocket 11, the switching device 10 can be stably attached to the ball chain 3, and by rotating the sprocket 11, the ball chain 3 can be moved up and down to open and close the screen 2. .

  Further, the weight 15 includes a function of determining the own weight W of the switching device 10 together with the battery 16. The self-weight W of the opening / closing device 10 operates the ball chain 3 as the anchor with the opening / closing device 10 as an anchor in a state where the sprocket 11 is suspended to the ball chain 3 within a range where It is set in a range sufficient for For example, the weight W of the switching device 10 is desirably 1 kg or more and 3 kg or less, and may be 1.5 kg or more and 2.5 kg or less.

  The sprocket 11 is a gear provided with a tooth shape that matches the pitch of the balls 3 a of the ball chain 3 and preferably has a diameter of 5 cm or more and 15 cm or less, and may be 8 cm or more and 12 cm or less. The sprocket 11 may be provided with a portion or a plate for guiding the movement of the ball chain 3 around (around) the sprocket 11 so that the ball chain 3 does not easily come off the sprocket 11.

  The control unit 20 may be a microcomputer including a CPU, a memory, and a near field communication function. The control unit 20 moves the sprocket 11 by a signal (command) received via the wireless communication function 21, a function (first function) 22 for initializing the movement of the opening / closing device 10, and the roll 11 to roll And a function (second function) 23 for opening and closing the screen 1 (screen 2).

  An example of the wireless communication function 21 is Bluetooth (registered trademark), which may be WiFi (registered trademark), a wireless LAN, an infrared communication unit, or the like. The control unit 20 can communicate with a terminal such as a smart phone (not shown) via the wireless communication function 21 and can open and close the roll screen 1 in response to a signal from the smart phone. Therefore, the user can download a predetermined application to the smartphone, and can remotely open and close the roll screen 1 via the opening / closing device 10 by the application.

  The control unit 20 further includes an automatic control function 24 which autonomously opens and closes the roll screen 1. The automatic control function 24 outputs a signal for controlling the drive unit 13 in conjunction with the detection result of the sensor 25 that detects at least one of light, sound and temperature. One example of the automatic control function 24 determines day and night according to the brightness of the outside, the light intensity of a predetermined wavelength, the ratio of the brightness inside and outside of the room, etc. Is a function of opening and closing the roll screen 1. Another example of the automatic control function 24 is a function of opening and closing the roll screen 1 at a preset time by a timer. The automatic control function 24 may have a function of opening and closing the roll screen 1 according to the room temperature in conjunction with a temperature sensor. The automatic control function 24 may have a control function interlocked with the air conditioning system. Further, the automatic control function 24 may have a function of recognizing the voice and other sounds by the sensor 25 and controlling the roll screen 1.

  Moreover, the application of the smart phone which controls the switching device 10 may include the function cooperated with another application. For example, when the wake-up time and the like are set by another application of the smartphone, a command to open and close the roll screen 1 may be transmitted to the opening and closing device 10 automatically at the setting time.

  An example of the operation of the switching device 10 is shown in FIG. In step 51, the wireless communication function 21 receives a communication (command) from the smart phone. In step 52, if the command is the initial setting, in step 53, the first function 22 performs initial setting of the opening / closing device 10. In the initial setting, for example, setting of the raising and lowering direction (opening and closing direction) of the sprocket 11 and the position (rotation angle, number of rotations) of the roll screen 1 can be set. The raising / lowering direction of the screen 2 may be changed depending on the position at which the left or right chain 3 is provided, or the user may manually set the application of the smartphone.

  The user may manually set the fully open and fully closed position (such as the total rotation angle of the sprocket 11) in the application. In this example, the load (torque) of the drive unit 13 can raise its own weight W using the fact that the opening / closing device 10 is a device that operates the ball chain 3 using its own weight W as a weight (anchor) When the value (first load) is reached, the first function 22 of the control unit 20 stops the drive unit 13 and raises its stopped position (overload position, rotation angle, first rotation angle) It stores in the memory as a limit value (full open position or full close position) of (opening direction) or lowering direction (closing direction). For example, in FIG. 2A, the overload position when the sprocket 11 is rotated in the counterclockwise direction 5 is stored as the fully open position, and the overload position when the sprocket 11 is rotated in the clockwise direction 6 is the fully closed position. Remember.

  In step 54, when the command to raise (open) the screen 2 is received from the smart phone, the open / close function (second function) 23 of the control unit 20 opens the sprocket 11 through the drive unit 13 in step 55. Rotate to the fully open position in the direction or the upper limit position in front of it. The upper limit position is preferably a position (rotational angle) immediately before a position (full open position) at which the drive unit 13 is overloaded so that the rotation mechanism of the roll screen 1 is not forced. The open / close function 23 reduces the rotational speed of the motor from a position (rotational angle) to a certain extent before the fully open position to control the stop position with high precision, or reduces the load on the rotation mechanism of the roll screen 1 or the impact when stopped be able to.

  In step 56, when the command to lower (close) the screen 2 is received from the smartphone, the open / close function 23 of the control unit 20 in step 57 controls the sprocket 11 in the closing direction through the drive unit 13 in the fully closed position or Rotate to the lower limit position in front of it. Similar to the upper limit position, the lower limit position is preferably a position (rotational angle) immediately before a position (full closing position) at which the drive unit 13 is overloaded so that the rotation mechanism of the roll screen 1 is not forced. .

  As described above, the opening and closing device 10 of the present invention can be attached so as to be hung on the chain 3 of the roll screen 1, and thereafter, the application of the smartphone remotely operates the opening and closing of the roll screen 1 be able to. Therefore, this opening / closing device 10 can be attached to the existing roll screen 1 for remote control, add a remote function to the manual type roll screen 1, roll screens on high places in walls or ceilings, or inaccessible windows. It becomes possible to attach 1 and to open and close remotely.

1 Roll screen, 10 switchgear, 11 sprockets

Claims (6)

An opening / closing device that is detachably mounted in a suspended state on a chain that operates a windup blind,
A sprocket engaged with the chain;
A drive unit that rotationally drives the sprocket;
A switchgear having a weight vertically below the sprocket for setting the center of gravity of the switchgear. In claim 1,
The switchgear, wherein the weight comprises a battery for the drive unit. In claim 1 or 2,
A switchgear having a control unit that receives a signal for controlling the drive unit via wireless. In claim 1 or 2,
A switchgear having a control unit that outputs a signal for controlling the drive unit in conjunction with a detection result of at least one of light, sound, temperature and time. In claim 3 or 4,
The control unit includes a first function of stopping the drive unit when the load of the drive unit reaches a first load for raising the switchgear itself along the chain. In claim 5,
The control unit stores, for each rotation direction of the sprocket, a first rotation angle at which the load of the drive unit reaches the first load, and the rotation angle of the sprocket reaches the first rotation angle. A switchgear, comprising a second function of controlling the speed of the drive unit before.

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