JPH089360Y2 - Opening / closing control device for shutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention is configured to interlock an opening / closing control mechanism for controlling the opening / closing operation of a shutter with a detection mechanism for detecting the fully open and fully closed states of a shutter curtain. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter opening / closing control device, and more particularly to a shutter opening / closing control device capable of accurately detecting a fully open and fully closed state of a shutter curtain without providing a special mechanism such as a transparent window in the shutter curtain. .

[Prior Art] Conventionally, an opening / closing control mechanism that controls the opening / closing operation of a shutter curtain is provided with a detection cam mechanism that is interlocked with a rotation drive shaft of an opening / closing drive that winds the shutter curtain, and a cam top portion of the detection cam mechanism. It is known that when the shutter curtain is fully opened and fully closed, the actuator of a micro switch adjacent thereto is pressed to cut off the power supply and stop the driving of the opening / closing drive.

However, this structure is configured to detect the fully open and fully closed positions by decelerating the rotational speed of the drive shaft of the opening / closing drive machine, and therefore has a drawback that it takes time to adjust the detection cam mechanism. I had one.

Therefore, in order to solve the above-mentioned drawbacks, as shown in FIGS. 4 (a) and 4 (b), one end b ', of the slats b, c located at the upper end and the lower end of the shutter curtain a.
A transmission window d, e is provided in c ', a shutter curtain a inside the guide rail f is sandwiched, and a detection medium g such as a magnetic field line or a light beam and its detector h are provided at positions facing each other to form a limit switch device. , Configured to detect the fully open and fully closed state of the shutter curtain (Actual Publication 57-1)
8555) has been devised.

However, this one can always detect the fully open and fully closed states at a fixed position without using a detection cam mechanism that requires adjustment, but cuts out the transmission windows d and e at the end of the shutter curtain. In addition, it is necessary to use a sophisticated adjustment technique to match the positional relationship between the limit switch device including the generator g and the detector h and the transmission windows d and e at the fully open and fully closed positions of the shutter curtain a. It has a drawback that it requires.

[Problems to be Solved by the Present Invention] The present invention has been devised in view of the above-mentioned circumstances in order to overcome the drawbacks of the related art. A detection optical path that passes through the elevating surface area of the shutter curtain is provided between the upper facing surfaces near the lintel and between the lower facing surfaces near the floor to control the opening and closing of the shutter curtain through the transparent window. It is an object of the present invention to provide an opening / closing control device for a shutter that can accurately detect the fully open and fully closed states of the shutter curtain without providing a special mechanism such as.

[Means for Solving the Problem] In order to solve the problem, the technical means adopted by the present invention is such that the first detection optical path and the second detection optical path passing through the elevating surface area of the shutter curtain are opposed to each other. An open / close control mechanism is provided between the upper facing surfaces near the guide portion of the guide rail and between the lower facing surfaces near the floor surface to control the driving / stopping of the open / close drive by shutting off and connecting the detection optical paths. However, when the first and second detection optical paths are both blocked by the downward movement of the shutter curtain, the downward drive of the opening / closing driver is stopped to hold the shutter curtain in the fully closed position, and Ascending movement, the first
When both the second detection optical path and the second detection optical path return from the cutoff state to the conductive state, the ascending drive of the opening / closing drive machine is stopped to hold the shutter curtain at the fully open position, and an obstacle is generated during the downward movement of the shutter curtain. Second by the existence of things
When the detection optical path is cut off, the opening / closing drive machine in the descending drive state is immediately stopped to prevent the shutter curtain from descending.

[Advantage of the Invention] Therefore, according to the present invention, the shutter curtain side does not need to be provided with a special mechanism such as a transparent window, and the troublesome detection position adjustment work is unnecessary, and the fully closed position and the fully opened position of the shutter curtain can be achieved. It is possible to detect with high accuracy, and it is possible to always perform accurate and stable shutter opening / closing control.

[Embodiment] The configuration of the present invention will be described in detail with reference to an embodiment shown in the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a shutter curtain provided in an opening, and the shutter curtain 1
Is opened and closed by being guided by guide rails 2, 2 arranged on the left and right. Reference numeral 3 denotes an opening / closing driver for the shutter curtain 1 arranged in the case 3a.
The shutter curtain 1 is rolled up and rewound by the forward and reverse rotation driving of. The light guides 4 and 5 and the light receivers 4a and 4a are provided on the upper end facing surface near the lintel and the lower end facing surface near the floor of the guide surfaces 2a and 2b of the guide rails 2 and 2 facing each other.
5a and 5a are buried respectively, and the first and the second passages pass diagonally across the elevating surface area of the shutter curtain 1 that elevates and descends along the bottom walls 6 and 7 of the guide rails 2 and 2 between the indoor side and the outdoor side. Detection optical path A and second detection optical path B are formed respectively.

 Next, the open / close control circuit will be described in detail.

In FIG. 3, 8 is a push button switch for raising, 9 is a push button switch for lowering, and the push button switch 8 is
When the raising push button switch 8 is closed, the make contacts 10a, 10b, 10c and 10d of the raising relay switch 10 are closed and the break contact 10e is opened. Similarly, the switch 9 operates so that when the lowering push button switch 9 is closed, the make contacts 11a, 11b, 11c and 11d of the lowering side relay switch 11 are closed and the break contact 1e is opened. ing. 12 is an upper limit switch, the upper limit switch
12 is configured to hold the closed state when the first detection optical path A is blocked, and the lower limit switch 13 is configured to hold the closed state when the second detection optical path B is conductive. . Reference numeral 14 is an electromagnetic brake of the opening / closing drive 3.

In the above structure, when the push button switch 8 for raising is pressed to close the shutter curtain 1 in order to raise it, the make contacts 10a, 10b, 10c and 10d are also closed and the opening / closing drive 3 is closed. The shutter curtain 1 is rotated to start winding the shutter curtain 1. After that, when the shutter curtain 1 is fully opened, the first detection optical path A is switched from the closed state to the conductive state, the upper limit switch 12 is opened, the opening / closing driver 3 is turned off, and the shutter curtain 1 is stopped in the fully opened state. To do.

Also, when lowering the shutter curtain 1,
When the lowering push button switch 9 is pressed to close it, the make contacts 11a, 11b, 11c and 11d are closed, the opening / closing driver 3 performs reverse rotation driving, and the shutter curtain 1 starts lowering. After that, when the shutter curtain 1 is fully closed, the second detection optical path B is changed from the conductive state to the cutoff state, and the lower limit switch 13 is opened to open / close the drive unit 3.
Is turned off, and the shutter curtain 1 is stopped in a fully closed state.

When an obstacle that blocks the second detection optical path B exists in the opening / closing area of the shutter curtain 1, the lower limit switch 13 of the shutter curtain 1 is in the open state even if the lowering push button switch 9 is pressed. The opening / closing driver 3 is not rotationally driven, and the shutter curtain 1 stops descending immediately due to the blocking of the second detection optical path B due to an obstacle or the like even when the shutter curtain 1 is moving downward, which is high. It is possible to configure an opening / closing control device that also has safety.

The present invention is not limited to the above embodiment, but as shown in FIGS.
And the first detection optical path A constituted by the photodetectors 4a and 5a
The second detection optical path B may be configured to coincide with the center line C of the elevating surface area of the shutter curtain 1.

[Advantage of the Invention] In short, the present invention provides the first detection optical path and the second detection optical path that pass through the elevating surface area of the shutter curtain.
Opening / closing control is provided between upper facing surfaces near the lintel of the guide rails facing each other and between lower facing surfaces near the floor surface to control the drive / stop of the opening / closing drive by shutting off and connecting the detection optical paths. A mechanism is configured to stop the descending drive of the opening / closing driver to hold the shutter curtain at the fully closed position when both the first and second detection optical paths are blocked by the downward movement of the shutter curtain, and When the shutter curtain is moved upward and both the first and second detection optical paths are returned from the blocking state to the conductive state, the upward drive of the opening / closing drive machine is stopped to hold the shutter curtain in the fully open position, and When the second detection optical path is blocked due to the presence of an obstacle during the downward movement of the shutter curtain, the opening / closing drive machine in the downward drive state is immediately stopped to stop the shutter car. Since it is configured to prevent the shutter from descending, the shutter curtain can be reliably moved up and down and stopped at the fully open and fully closed positions without any mechanical impact on the shutter curtain itself. The reliability of the mechanical function can be improved, and when the shutter curtain descends, the descending operation of the shutter curtain is immediately stopped by the obstacle existing in the elevating surface area blocking the second detection optical path. Therefore, it is possible to obtain a very useful and practical effect such that a special mechanism for detecting an obstacle is unnecessary and a high degree of safety can be ensured in the up-and-down operation of the shutter.

[Brief description of drawings]

The drawings show an embodiment of an opening / closing control device for a shutter according to the present invention. FIG. 1 is an overall front view, FIG. 2 is a perspective view of a main part, and FIG. 3 is a circuit of a main part. FIG. 4 (a) is a front view of the related art, FIG. 4 (b) is an explanatory view of essential parts of the related art, and FIGS. 5 (a) and 5 (b) are operation explanations of other embodiments. It is a figure. In the figure, 1 ... Shutter curtain, 2, 2 ... Guide rail, 3 ...
… Open / close driver, 4,5 …… Emitter, 4a, 5a …… Receiver, A…
... first detection optical path, B ... second detection optical path.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location 9406-2G G01V 9/04 P

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A first detection optical path and a second detection optical path that pass through an elevating surface area of a shutter curtain. An opening / closing control mechanism that controls the drive / stop of the opening / closing drive by blocking and connecting the detection optical paths is provided between the first and second detection optical paths. When it is cut off, the descent drive of the opening / closing drive is stopped to hold the shutter curtain in the fully closed position, and by the upward movement of the shutter curtain,
When both the first and second detection optical paths return from the cutoff state to the conductive state, the ascending drive of the opening / closing drive unit is stopped to hold the shutter curtain in the fully open position, and the shutter curtain is moving downward. In addition, when the second detection optical path is blocked due to the presence of an obstacle, the opening / closing drive machine in the descending drive state is immediately stopped to prevent the shutter curtain from descending. Opening / closing control device for the shutter.