JP2546991Y2 - Anomaly detection device in electric shutter for construction - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an abnormality detecting device for an electric shutter for a building provided at an opening of a building or the like.

[0002]

2. Description of the Related Art
In this type of electric shutter, there is a type in which a shutter curtain is wound around a winding drum that rotates based on driving of a switch, but in this case, the upper and lower limit positions where the shutter curtain is set are set. At this point, the opening / closing device is controlled to stop driving and the winding drum to stop rotating.

[0003] In such a case, even if an abnormality occurs and the shutter curtain reaches the upper and lower limit positions, if the take-up drum continues to rotate without stopping the operation of the opening / closing device, this is the case. In the case of the ascending drive, the shutter curtain is abnormally wound up, and in the case of the shutter curtain descending drive, the shutter curtain is wound on the winding drum in a reverse winding state. In any case, it is not preferable because it causes a failure or breakage.

In order to avoid this, it is sufficient to provide a detecting device for detecting these abnormalities. However, the path of the shutter curtain is different between the abnormal rise of the shutter curtain and the reverse winding. Detecting means for detecting,
There is no choice but to provide a detecting means for detecting reverse winding, and there is a problem that the number of parts is increased or the fitting in the shutter case is increased.

[0005]

SUMMARY OF THE INVENTION The present invention has been conceived in view of the above-mentioned circumstances, and has as its object to provide an abnormality detecting device for an electric shutter for buildings which can eliminate these disadvantages. In an electric shutter for architectural use, in which a shutter curtain is wound around a winding drum that is rotated by driving of a switch, the shutter curtain is disposed along a feeding path from the winding drum of the shutter curtain,
A first sensing element that senses and moves when the shutter curtain rises abnormally, and a first operating body that is provided integrally with the first sensing element and moves based on the sensing movement of the first sensing element A detection switch that detects the movement of the first operating body, and a second sensor that is disposed along a reverse winding path of the shutter curtain, and that interferes and moves when the shutter curtain is reversely wound around the winding drum. And a second operating body provided integrally with the second sensing body, the second working body moving based on the sensing movement of the second sensing body. An interfering portion is provided for interfering with the first operating body to move the first operating body in connection with the movement.

According to the present invention, with this configuration, one abnormality detecting device can detect an abnormal rise and reverse winding of the shutter curtain.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a shutter curtain of an electric shutter. The shutter curtain 1 is wound around a take-up drum 3 interlocked with a switch 2, and is used to drive the switch 2 forward and reverse. Winding drum 3 based
Are vertically guided by the guide rail 4 by the forward / reverse rotation of.

[0008] Reference numeral 5 denotes a shutter case in which the winding drum 3 is provided, and an abnormality detection device 6 according to the present invention is provided in the shutter case 5. That is, the first operating body 7 constituting the abnormality detecting device 6 is mounted on a substrate 8 integrally mounted on a bracket 5a serving as a side plate of the shutter case 5 so as to be vertically movable. A first sensing pin 9 is integrally formed at the lower end of the body 7 so as to protrude integrally with the shutter curtain 1 so as to be located inside a feeding path of the shutter curtain 1 from the winding drum 3. Reference numeral 10 denotes a second operating body which is pivotally supported at the lower end of the substrate 8 so as to be able to swing up and down, and a second sensing pin 12 is provided at the tip of the second operating body 10 with the shutter curtain 1.
And is integrally protruded so as to be located in the reverse winding path.

On the other hand, a mounting bracket 8a is integrally fixed to the upper end of the substrate 8, and the mounting bracket 8a is fixed to the mounting bracket 8a.
Although the detection switch 13 is incorporated in a, the switch lever 13 a of the detection switch 13 faces the side edge of the first operating body 7. As will be described later, when the first operating body 7 rises based on the abnormality detection, the switch lever 13a performs a switch switching operation by getting out of the concave groove 7a formed in the first operating body 7. Abnormality detection. Incidentally, in the embodiment, the detection of the abnormal rise of the shutter curtain 1 is such that the sensing plate 1 a provided on the inner surface of the side edge of the shutter curtain 1 interferes with the first sensing pin 9 when the shutter curtain 1 abnormally rises. , By sensing and raising this.

Further, the second sensing pin 12 interferes with the shutter curtain 1 which is in a reverse winding state, and based on this, the second operating body 10 swings downward about the support shaft 11 as a fulcrum. However, the second operating body 10 is connected to the lower swing of the second operating body 10 and interferes (contacts) with the first sensing pin 9 from below to raise the first operating body 7. An interference portion 10a for causing the second sensing pin 12
Is set in such a manner that the switch of the detection switch 13 is switched in connection with the reverse winding detection.

In the embodiment of the present invention configured as described above, as described above, when the shutter curtain 1 rises abnormally, the sensing plate 1 provided on the shutter curtain 1
a interferes with the first sensing pin 9 disposed inside the feeding path and raises the first operating body 7 to switch the detection switch 13, whereby an abnormal rise can be detected. On the other hand, when the shutter curtain 1 is in the reverse winding state,
The second sensing pin 12 arranged in the reverse winding path interferes with the shutter curtain 1, and the second operating body 10 that swings based on this interferes with the first sensing pin 9 and raises the first operating body 7. Then, the detection switch 13 is switched, whereby the reverse winding can be detected.

As described above, according to the present invention, the first sensing pin 9 can detect an abnormal rise of the shutter curtain 1, and
Also, the reverse winding of the shutter curtain 1 can be detected by the second sensing pin 12, and these sensing operations are further concentrated on the first operating body 7, and the first operating body 7 is raised to perform switching of the detection switch 13. Therefore, the detection switch 13 is used for detecting an abnormal rise and reverse winding of the shutter curtain 1 and can be shared, so that it is not necessary to provide different detection switches. As a result, while the abnormal rise and the reverse winding of the shutter curtain 1 can be reliably detected, the number of parts can be significantly reduced by using the detection switch 13 together, and the housing inside the shutter case 5 can be reduced. It can be compact. Moreover, in this case, since the first operating body 7 provided with the first sensing pin 9 for sensing the abnormal rise of the shutter curtain 1 moves along the vertical extension path of the shutter curtain 1, The operating stroke can be lengthened as shown in FIG. 6, so that when an emergency stop of the shutter curtain 1 is detected and the shutter curtain 1 further rises due to inertia, This can be dealt with with a margin, and there is no damage.

The present invention is, of course, not limited to the above-described embodiment, but is within the scope of the configuration described in the means for solving the above-mentioned problem so that the detection switch can be shared. If there is, design change is free. Therefore, the first sensor for sensing an abnormal rise can be disposed on the outer side opposite to the above embodiment, and the interference mechanism of the second sensor with the first sensor is the same as that of the embodiment. The interference part is not limited to the one provided directly on the second sensing body as described above, but may be one that is connected via an appropriate member such as a link member.

[0014]

[Effects] In summary, since the present invention is constructed as described above, the first sensor disposed in the feed-out path of the shutter curtain can detect an abnormal rise of the shutter curtain, and can be used in the reverse winding path. Although the arranged second sensor can detect the reverse winding of the shutter curtain,
Further, the sensing operation by the first and second sensing elements is integrated into the first operating element and moves the first operating element to switch the detection switch. As a result, the detection switch can also be used for detecting abnormal rise and reverse winding of the shutter curtain, and there is no need to provide a separate detection switch for each. And the reverse winding can be reliably detected, and the number of components can be greatly reduced by using the detection switch together, and the housing in the shutter case can be made compact.

[Brief description of the drawings]

FIG. 1 is a schematic front view of an electric shutter.

FIG. 2 is a side view showing the inside of the shutter case.

FIG. 3 is a plan view of the abnormality detection device.

FIG. 4 is a side view of the same.

FIG. 5 is a rear view of the same.

FIG. 6 is a plan view of the abnormality detection device showing a state where the first sensing pin has moved and sensed.

FIG. 7 is a plan view of the abnormality detecting device showing a state where the second sensing pin has moved and sensed.

FIG. 8 is an explanatory diagram showing sensing of an abnormal rise of a shutter curtain.

FIG. 9 is an explanatory diagram showing the detection of reverse winding of the shutter curtain.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shutter curtain 1a Sensing plate 2 Switch 3 Winding drum 4 Guide rail 5 Shutter case 5a Bracket 6 Abnormality detector 7 First operating body 7a Groove 8 Substrate 8a Mounting bracket 9 First sensing pin 10 Second operating body DESCRIPTION OF SYMBOLS 10a Interference part 11 Support shaft 12 Second sensing pin 13 Detection switch 13a Switch lever

Claims (1)

(57) [Scope of request for utility model registration] An architectural electric shutter in which a shutter curtain is wound around a take-up drum that is rotated by driving a switch, the shutter being disposed along a feeding path of the shutter curtain from the take-up drum, A first sensing element that senses and moves when the shutter curtain rises abnormally, and a first operating body that is provided integrally with the first sensing element and moves based on the sensing movement of the first sensing element And a detection switch for detecting the movement of the first operating body, and a second sensor disposed along a reverse winding path of the shutter curtain and interfering and moving when the shutter curtain is reversely wound on the winding drum. A body and the second sensing body are provided integrally,
And a second operating body that moves based on the sensing movement of the second sensing body. The second operating body further includes a first operating body for moving the first operating body in connection with the movement of the second operating body. An abnormality detection device for an electric shutter for a building, wherein an interference portion that interferes with an operating body is provided.