JP6914186B2 - Electric shutter device for construction - Google Patents

Description

The present invention relates to the technical field of an electric shutter device for construction, which is installed in a skeleton opening such as an entrance / exit of a building.

Today, there are cases where an electric shutter device for construction is installed in an opening such as a doorway so that the shutter curtain opens and closes by being guided by the left and right guide rails as the electric switch is driven. In such an electric shutter device, for example, when this is a heavy-duty type, when the shutter curtain that is in operation rises abnormally beyond the maximum rising position (fully opened position). In addition, the abnormal rise is detected by an abnormality detection switch (emergency switch, abnormality detection sensor, emergency sensor), and based on the detection, the switch is urgently stopped to avoid the occurrence of a problem caused by the abnormal rise of the shutter curtain. There is something that deals with.
By the way, such an abnormal rise is, for example, a case where the seat plate (seat plate slats) at the lowermost end of the shutter curtain rises beyond the upper end portion of the magsa provided at the upper end of the opening, and therefore, it is higher than the magsa. The abnormality detection switch is provided above, and the upper surface of the seat plate (seat plate slats) provided at the lowermost end of the shutter curtain that has risen abnormally comes into direct contact (interference) with the probe (switch bar) of the abnormality detection switch. ) Has been proposed so as to detect anomalies (see, for example, Patent Document 1).

JP-A-2015-86603

By the way, in performing the above-mentioned abnormality detection, when the seat plate is wide in the front-rear direction of the opening in and out, a wide contact surface portion for directly contacting the probe can be secured on the upper surface portion of the seat plate. However, it is assumed that a sufficiently wide contact surface portion cannot be secured when the seat plate is narrow in the front-rear direction, and the contact surface portion abuts on the probe when the abnormal rise occurs. There is a risk that it will be difficult to ensure the reliability of the product.
For this reason, if the probe is lengthened to ensure the reliability of contact with the seat plate contact surface, the probe will be close to the curtain surface of the shutter curtain, and the shutter curtain will receive wind. When the shutter bends or the shutter curtain moves to the probe side through the gap between the shutter rail and the guide rail, the probe enters the shutter thickness of the shutter curtain and the probe moves into the shutter curtain. There is a concern that it may come into contact with an intermediate part and detect an erroneous abnormal rise.
Therefore, a contact member is provided on the upper surface of the seat plate so as to project toward the abnormality detection switch side, and when the shutter curtain rises abnormally, the member comes into contact with a probe arranged above the magsa. Therefore, it is proposed that the abnormality detection switch indirectly interferes with the seat plate so that the abnormality rise is detected.
However, in the normal ascending process of the shutter curtain, the corresponding member rises so as to pass through the lower end edge of the magsa. It is assumed that a state of polymerization will occur, and if this happens, the member will continue to rise toward the highest rising position side in a state where the member is in contact with the lower edge of the magsa in a locking manner.
By the way, if the seat plate is raised in such a locked state, the seat plate is in an inclined state in which the side opposite to the abnormality detection switch arrangement side is lifted from the vertical posture (self-weight hanging posture). When the seat plate is further raised and the backing member passes the lower edge of the magsa, the seat plate is suddenly released from the magsa contact of the backing member and tries to return to the vertical posture. Since the posture is returned to the posture shockingly, not only an abnormal noise is generated, but also a problem that the obstacle detection switch provided on the seat plate receives the shocking return operation and erroneously detects it occurs. This invention was created to solve these problems.

The present invention has been created for the purpose of solving these problems in view of the above circumstances, and the invention of claim 1 is a shutter curtain for opening and closing an opening, and the shutter curtain. For construction, it is equipped with guide rails provided on the left and right to guide the elevator up and down, a take-up shaft around which a shutter curtain is wound, and an electric switch that drives the take-up shaft in the forward and reverse rotations. In the electric shutter device, when the seat plate at the lowermost end of the shutter curtain rises abnormally beyond the fully open position, an abnormality detection switch equipped with a probe for interfering with the seat plate and detecting the abnormal rise is provided. When the seat plate is provided with a contact member that projects toward the abnormality detection switch side and abuts on the probe, the contact member is a contact portion that projects toward the abnormality detection switch side from the curtain thickness of the shutter curtain. The electric shutter device for construction is characterized in that it is configured to include an extension portion extending downward from the tip end portion of the corresponding contact portion.
The invention according to claim 2 is the electric shutter device for construction according to claim 1, wherein the extending portion is inclined so as to be separated from the seat plate toward the lower side.
The invention of claim 3 is the electric shutter device for construction according to claim 1, wherein the extending portion hangs vertically.
The invention according to claim 4 is the electric shutter device for construction according to claim 2 or 3, wherein the extending portion is inclined so that the lower portion is inclined so as to be closer to the seat plate toward the lower side.
The invention of claim 5 is the electric shutter device for construction according to claim 1, wherein the extending portion is inclined so as to be closer to the seat plate toward the lower side.
The invention of claim 6 is the electric shutter device for construction according to claim 4 or 5, wherein the extending portion is configured so that the lower end portion abuts or faces the seat plate.

According to the invention of claim 1, when the shutter curtain rises above the fully open position, in order to detect this, the shutter curtain protrudes from the curtain thickness of the shutter curtain and comes into contact with the probe of the abnormality detection switch. A contact member provided with a contact portion is provided on the seat plate at the lowermost end of the shutter curtain, and the corresponding member has an extension portion formed downward from the tip portion of the contact portion. Therefore, if the contact portion where the seat plate rises together with the shutter curtain passes through the lower end portion of the magsa in a state where it is in contact with the magsa, the lower extending portion will continue to contact the magsa, and the seat Not only can it be avoided that the plate is shockedly returned to the vertical posture to prevent the generation of abnormal noise, but also the malfunction of the obstacle detection switch can be avoided.
According to the invention of claim 2, the inclined seat plate can be corrected toward the normal posture side by the extending portion that is separated from the seat plate toward the lower side, and the posture return of the seat plate becomes gentle. First, even if the abutting portion does not abut on the probe, the extending portion abuts on the probe, which improves reliability.
According to the invention of claims 2, 3 or 4, the avoidance of returning the seat plate to the shocking vertical posture can be made suitable according to the shape of the seat plate and the like.
According to the invention of claim 4 or 5, since the extending portion is configured to be closer to the seat plate toward the lower side, the seat plate passing through the lower end portion of the magsa in an inclined state gradually becomes a vertical posture. By returning, the seat plate can be raised steadily.
According to the invention of claim 6, when the seat plate is raised in a state where the extension portion is in contact with the lower end portion of the magsa and reaches the lower end portion of the extension portion, the lower end portion hits the seat plate. Since they are in contact with each other or face each other in close proximity to each other, not only the impact return of the seat plate can be prevented to the end, but also a problem that the lower end portion becomes protruding and is caught by another member can be avoided.

It is a front view of the electric shutter device for architecture. It is a side vertical sectional view of the electric shutter device for construction. It is a top view of the seat plate part. It is a front view of a seat plate part. It is a vertical cross-sectional view of a seat plate part. It is a vertical cross-sectional view of a magsa part. (A) and (B) are a front view and a side view of the contact member. (A) to (D) are operation explanatory views which show the ascending process at the magsa part of the seat plate. (A) to (F) are vertical cross-sectional views of a seat plate portion showing the second to seventh embodiments of the contact member.

First, an embodiment of the present invention will be described with reference to the drawings. For convenience, in the electric shutter device for construction, the direction in which a person enters and exits is defined as the front-rear direction, and the width direction of the opening on the skeleton side is defined as the left-right direction. As will be explained, it goes without saying that the directionality is not limited to this expression.

In the drawing, reference numeral 1 denotes an electric shutter device for construction that is built in an opening such as an entrance / exit of a skeleton, and the electric shutter device 1 is provided in a shutter curtain 2 and an opening, and is provided above and below the shutter curtain 2. It is configured to include left and right guide rails 3 for elevating and lowering guidance, and a shutter case 4 provided at the upper end of the opening. The shutter case 4 is wound with a shutter curtain 2. , An electric switch 6 for driving the take-up shaft 5 in the forward and reverse directions, a control unit 7 for controlling the drive of the switch 6, and for interlocking and connecting the switch 6 and the take-up shaft 5. Various member devices such as the transmission mechanism 8 of the above are installed, and the switch 6 controls the drive based on the switch operation of the elevating / stopping switch 9 provided near the opening to guide the shutter curtain 2 to the guide rail 3. It goes without saying that the opening and closing operation is performed as before, and the present invention can be carried out in such a case.

The shutter curtain 2 is formed by connecting adjacent slats 2a in a series (single plate shape) by interlocking R in the vertical direction, and is configured by providing a seat plate 10 at the lowermost end. In the present embodiment, the seat plate 10 is configured to include an upper seat plate half portion 11 and a lower seat plate half portion 12. The upper seat plate half portion 11 is fixed to the lower end portion of the lowermost end slat 2a via a plate-shaped connecting piece portion 11a whose upper end portion is interlocked and R, and to the connecting piece portion 11a via a bolt 10a. The standing piece 11b, the upper horizontal piece 11c protruding outward in the front-rear direction with the width remaining in the front-rear direction from the lower end of the standing piece 11b, and the upper horizontal piece 11c downward from the front-rear edge. The front and rear leg pieces 11d are integrally formed, and the lower opening piece portion 11e having a side view shape with an opening on the lower side is provided. Further, on the lower end edge of the front and rear leg pieces 11d, an inner projecting piece 11f and an outer projecting piece 11g protruding inward and outward in the front-rear direction are formed.

On the other hand, the lower seat plate half portion 12 is formed of an upper vertical piece 12a that is loosely fitted between the inner projecting pieces 11f and can move up and down, and an upper vertical piece 12a that is formed toward the outside in the front-rear direction from the upper end portion. A locking piece 12b that locks to the inner projecting piece 11f from the upper side in a retaining shape, and a C-groove shape that opens from the lower end of the upper vertical piece 12a so that the upper side continues to the upper vertical piece 12a and widens in the front-rear direction. It is configured to include a bottom piece portion 12c formed in a dovetail shape).

The seat plate 10 is formed by incorporating the lower seat plate half portion 12 into the upper seat plate half portion 11 so that the lower seat plate half portion 12 is allowed to move up and down within the height range of the upper vertical piece 12a. However, an obstacle detection sensor 13 is further provided on the lower surface of the upper horizontal piece 11c of the upper seat plate half portion 11. In the obstacle detection sensor 13, when an obstacle comes into contact with the lower seat plate half portion 12 and the lower seat plate half portion 12 is pushed up during the lowering operation (closing operation) of the shutter curtain 2, the lower seat plate half portion 12 is pushed up. Obstacle detection is performed based on the fact that the bottom piece portion 12c of the plate half portion 12 comes into contact with the sensor bar (probe) 13a of the obstacle detection sensor 13 provided on the upper seat plate half portion 11 and moves upward. The obstacle detection signal is transmitted from the wireless transmitter 14 provided on the seat plate 10, and the switch 6 is urgently stopped by a control command from the control unit 7 based on the received signal from the receiver 14a that receives the obstacle detection signal. The necessary obstacle avoidance operation such as the above is executed, and such a configuration is also well known in the past.

In this way, the shutter curtain 2 provided with the seat plate 10 at the lowermost end is opened and closed by the forward and reverse drive of the opening / closing machine 6 based on the control command from the control unit 7, but the shutter curtain 2 is normally fully opened. When stopped at the position, the seat plate 10 is loosely fitted between the vertical pieces 15b of the front and rear U-shaped magsa 15 provided at the upper end of the opening, and the upper horizontal piece 11c is the upper piece of the magsa 15. It is located at a position substantially corresponding to the portion 15a (in the present embodiment, a position slightly lower than the upper piece portion 15a of the magsa), and the lower surface of the bottom piece portion 12c is located at a position substantially corresponding to the lower piece portion 15c of the magsa 15. Is set to.
In the figure, 16 is provided at the upper end of the guide rail 3, a swallowing guide portion for guiding the shutter curtain 2 unwound from the take-up shaft 5 to the guide rail 3, and 17 guides the shutter curtain 2. Roller-shaped smoother guides, all of which are arranged in the shutter case 4. Further, the switch 6 and the control unit 7 are provided in a state of being biased to either the left or right side in the shutter case 4.

Reference numeral 18 denotes a contact member for which the present invention has been carried out, and the corresponding member 18 is interposed at the connecting piece portion 11a via the bolt 10a in a state of overlapping with the standing piece portion 11b of the upper seat plate half portion 11 in the front-rear direction. The vertical plate-shaped fixing piece 18a that is integrally fixed and the fixed piece 18a is bent so as to project from the lower end of the fixing piece 18a toward the switch 6 side (abnormality detection switch 19 side described later). It is configured to include a contact portion 18b and an extension portion 18c that is bent so as to extend downward from the tip end portion of the contact portion 18b.
The contact member 18 is provided on the seat plate 10 by fixing (attaching) the fixed piece portion 18a to the standing piece portion 11b at a position deviated to the left-right direction switch 6 side. In this case, the contact member 18 comes into contact with the seat plate 10. The portion 18b protrudes toward the switch 6 side from the edge of the upper horizontal piece 11c on the switch 6 side in a state of being in contact (laminated) with the upper surface of the horizontal upper piece 11c, and this protruding portion corresponds to the protrusion. The probe 19a of the abnormality detection switch 19, which will be described later, comes into contact with the probe 19a and has an expanded contact surface portion for detecting an abnormal rise. It is designed to be widely secured on the 6 side of the switch.

On the other hand, in the present embodiment, the extending portion 18c extending downward from the tip end portion of the contact portion 18b is separated from the seat plate 10 toward the lower side (the magsa 15 on the side where the abnormality detection switch 19 is arranged). The upper first inclined surface portion 18d inclined so as to be closer to the seat plate 10 and the lower second inclined surface portion 18e inclined so as to be closer to the seat plate 10 from the lower end portion of the first inclined surface portion 18d. The lower end of the second inclined surface portion 18e is set to be locked (contacted) with the outer projecting piece 11g of the upper seat plate half portion 11 from above. There is.

Further, the abnormality detection switch 19 is biased toward the side where the switch 6 is arranged, and is mounted in the shutter case 4 via a bracket 19b so as to face the contact member 18, but the probe of the abnormality detection switch 19 The 19a is located above the upper piece portion 15a of the magsa 15, and is arranged at a position facing the upper side of the contact portion 18b. Then, the abnormality detection switch 19 switches the switch because the contact portion 18b comes into contact with the probe 19a when the shutter curtain 2 in the open operation rises beyond the fully open position. This is done and an abnormal rise is detected, and a control command based on this is set to make an emergency stop of the switch 6 so that no further abnormal rise is made.

In the embodiment of the present invention configured as described above, when the shutter curtain 2 is opened by driving the switch 6, when an abnormality occurs in which the shutter curtain 2 rises beyond the fully open position. In the seat plate 10, the upper horizontal piece 11c rises beyond the upper piece portion 15a of the magsa 15, and in this case, the contact portion 18b of the contact member 18 provided on the seat plate 10 is the abnormality detection switch 19. When it comes into contact with the probe 19a, an abnormal rise is detected, and the switch 6 is urgently stopped.

In the case where the present invention is carried out in this way, when the abnormal rise occurs in the process of opening the shutter curtain 2, the contact portion 18b whose contact surface portion is expanded to the abnormality detection switch 19 side is searched for. By abutting on the needle 19a (see FIG. 8D), the abnormality detection switch 19 detects the abnormality and makes an emergency stop.

In such a step of opening the shutter curtain 2, the shutter curtain 2 bends or moves in the front-rear direction, and the expanded contact portion 18b comes into contact with the lower piece portion 15c of the magsa 15. , The seat plate 10 rises in a state where the lower side is inclined to the side opposite to the side where the abnormality detection switch 19 is provided (see FIG. 8 (A)), but further rises from this state. When the contact portion 18b passes through the corner portion 15d between the lower piece portion 15c and the vertical piece portion 15b of the magsa 15, in the present embodiment, the upper first inclined surface portion 18d is the lower end portion of the magsa 15. The corner portion 15d is in sliding contact (see FIG. 8B), and then the corner portion 18f between the first and second inclined surface portions 18d and 18e is in sliding contact with the vertical piece portion 15b of the magsa 15 (see FIG. 8B). (See FIG. 8 (C)).
Incidentally, in the present embodiment, the contact member 18 is provided at the left-right end edge portion of the shutter curtain 2 on the side where the abnormality detection switch 19 is arranged so as not to enter the guide rail 3. As a result, when the shutter curtain 2 is bent in the front-rear direction due to the wind, the portion of the shutter curtain 2 that is fitted into the guide rail 3 of the shutter curtain is the portion of the shutter curtain 2 that is fitted into the guide rail 3. Therefore, when the shutter curtain 2 is bent, the edge portion of the shutter curtain 2 is more than the central portion in the left-right direction of the shutter curtain 2. It is considered that the contact portion 18b does not come into contact with the magsa corner portion 15d as much as possible due to the movement with a small bending allowance. When the contact portion 18b comes into contact with the magsa 15, the effectiveness of the present invention is further exhibited.

As described above, in the present embodiment, when the contact portion 18b abuts on the magsa corner portion 15d and the seat plate 10 further rises from the inclined state and rises above the corner portion 15d, the contact portion 18b is lowered from the corresponding contact portion 18b. The extension portion 18c extending toward the side comes into contact with the corner portion 15d, and as a result, the seat plate 10 maintains the inclined posture, and there is no extension portion 18c. As such, it is avoided to shockably return to the vertical position. As a result, it is possible not only to prevent the generation of abnormal noise due to the impact recovery, but also to avoid a problem that the obstacle detection sensor 13 erroneously detects due to the vibration caused by the shock recovery. can.

Moreover, in this case, the magsa corner portion 15d comes into contact with the first inclined surface portion 18d from the contact portion 18b, but the first inclined surface portion 18d is inclined so as to be separated from the seat plate 10 toward the lower side. Therefore, the seat plate 10 is corrected from the biased posture close to the magsa 15 toward the normal vertical posture side, so that the seat plate 10 can be surely returned to the normal posture.
Further, since the first inclined surface portion 18d is inclined so as to be separated from the seat plate 10 toward the lower side, in the unlikely event that a further abnormality occurs such that the contact portion 18b does not contact the probe 19a, the first The inclined surface portion 18d comes into contact with the probe 19a, so that the certainty of avoiding an abnormality can be improved.

Moreover, in this case, since the second inclined surface portion 18e, which is the lower side of the extending portion 18c, is inclined so as to be closer to the seat plate 10 toward the lower side, the seat plate 10 is formed even after passing the first inclined surface portion 18b. However, since the lower end of the second inclined surface portion 18e is in contact with the seat plate outer protrusion 11g from above, the lower end of the contact member 18 becomes convex. As a result, it is possible to avoid the occurrence of a problem that the lower end portion of the contact member 18 is caught by another member.

Needless to say, the present invention is not limited to that of the above-described embodiment, and the contact member includes a contact portion that protrudes toward the abnormality detection switch side from the curtain thickness of the shutter curtain. It suffices if it is configured to include an extending portion extending downward from the tip end portion of the contact portion, for example, the plate thickness of the seat plate is the curtain portion (the portion excluding the seat plate) of the shutter curtain. When it is thinner than the plate thickness, the contact portion of the contact member may protrude toward the abnormality detection switch side from the curtain thickness so that the probe does not abut on the shutter surface.
Further, as the contact member, there is no second inclined surface portion as in the first embodiment, and as in the second, third, and fourth embodiments shown in FIGS. 9A, 9B, and 9C. In addition, the extending portion 18c can be inclined so as to be separated from the seat plate 10 toward the lower side, vertically formed, or inclined toward the seat plate 10 toward the lower side, and the same. As in the fifth embodiment shown in FIG. (D), a vertical third surface portion 18g is provided between the first and second inclined surface portions 18d and 18e as an extension portion, FIG. (E) As in the sixth and seventh embodiments shown in (F), the lower side of the seat plate 10 extends vertically or extends from the lower end of the first surface portion 18h that is inclined toward the seat plate side toward the lower side. It can also be carried out assuming that the second surface portion 18i inclined so as to be close to each other is provided.

The present invention avoids an abnormal rise of the shutter curtain beyond the fully open position in an electric architectural shutter device configured so that the shutter curtain opens and closes at an opening such as an entrance / exit guided by left and right guide rails. It can be used as a thing.

1 Electric shutter device 2 Shutter curtain 3 Guide rail 10 Seat plate 11 Upper seat plate half part 12 Lower seat plate half part 15 Magsa 15a Upper piece part 15c Lower piece part 15d Corner part 18 Reliable member 18b Contact part 18c Extension part 18d 1st inclined surface 18e 2nd inclined surface 18f Corner 19 Abnormality detection switch 19a Probe

Claims (6)

A shutter curtain for opening and closing the opening, guide rails provided on the left and right to guide the shutter curtain up and down, a take-up shaft around which the shutter curtain is wound, and a forward / reverse rotation drive of the take-up shaft. In an electric shutter device for construction, which is equipped with an electric switch to perform
When the seat plate at the lowermost end of the shutter curtain rises abnormally beyond the fully open position, an abnormality detection switch equipped with a probe for interfering with the seat plate and detecting the abnormal rise is provided, while the seat plate is provided with an abnormality detection switch. In providing a contact member that protrudes toward the abnormality detection switch and comes into contact with the probe,
The contact member includes a contact portion that protrudes toward the abnormality detection switch side from the curtain thickness of the shutter curtain, and an extension portion that extends downward from the tip of the contact portion. An electric shutter device for construction that is characterized by being. The electric shutter device for construction according to claim 1, wherein the extending portion is inclined so as to be separated from the seat plate toward the lower side. The electric shutter device for construction according to claim 1, wherein the extending portion hangs vertically. The electric shutter device for construction according to claim 2 or 3, wherein the extending portion is inclined so that the lower portion is inclined so as to be closer to the seat plate toward the lower side. The electric shutter device for construction according to claim 1, wherein the extending portion is inclined so as to be closer to the seat plate toward the lower side. The electric shutter device for construction according to claim 4 or 5, wherein the extending portion is configured such that the lower end portion abuts or faces the seat plate in close proximity to the seat plate.

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