JP7023796B2 - Architectural switchgear with obstacle detection means - Google Patents

Description

The present invention relates to the technical field of a building switchgear provided with obstacle detecting means built in an opening such as an entrance / exit of a building.

Today, there is known a building opening / closing device configured to open / close an opening that can pass in the front-rear direction such as an entrance / exit by moving the opening / closing body up / down by driving a switchgear. As an example, a shutter device for construction is configured to open and close the opening by moving the shutter curtain (switchgear) up and down by the rotation of the take-up drum accompanying the forward and reverse drive of the motor. In order to prevent obstacles such as humans and luggage from being caught in the shutter curtain during the closing operation, an obstacle detecting means is provided, and when the obstacle detecting means detects an obstacle, the shutter curtain is closed. The obstacle avoidance operation such as emergency stop is performed.
As such an obstacle detecting means, the seat plate provided at the lowermost end of the shutter curtain can be moved up and down with respect to the upper upper seat plate portion connected in a series to the lowermost end portion of the shutter curtain and the upper seat plate portion. The lower seat plate is provided with an obstacle detection sensor that is provided on the upper seat plate side and detects that the lower seat plate has moved upward with respect to the upper seat plate. It has been proposed that the part is configured to determine that the obstacle has been detected when the obstacle detection sensor detects that the part has moved up due to contact with (sandwiched) an obstacle.
By the way, when an obstacle comes into contact with the lower seat plate portion, the contact position is different in the left-right direction and the front-back direction. Therefore, the lower seat plate portion is in various states corresponding to these different contact positions. It will move up in (posture) (upward movement in the left-right direction, upward movement in the front-back direction, and up-movement in combination with these), but such up-movement of the lower seat plate part is simply up and down. There is a problem that it is difficult to detect with one obstacle detection sensor provided between the seat plates.
Therefore, between the lower seat plate portion and the upper seat plate portion, an intermediate detection member that moves upward (swings) with the shaft support portion supported by the upper seat plate portion as a fulcrum (starting point) is provided, and various types of the lower seat plate portion are provided. It has been conventionally proposed that the above movements are aggregated into the upper movements having the shaft support portion of the intermediate detection member as a fulcrum, and this can be detected by an obstacle detection sensor provided on the upper seat plate portion side. (See, for example, Patent Documents 1 and 2.).

Japanese Unexamined Patent Publication No. 8-105280 Japanese Unexamined Patent Publication No. 10-46962

In such a conventional method, the upward movement of the intermediate detection member is not the upward movement due to the contact of the lower seat plate portions from both the front and rear sides as in the case where the lower seat plate portion moves upward evenly in the front-rear direction. , When the lower seat plate is moved upward by receiving an upward movement in a state of being tilted in either of the front-rear directions, a large upward power is required as compared with the case of an upward movement due to contact from both sides in the front-rear direction. However, in this case, the force when moving the intermediate detection member upward on one side in the front-rear direction near the shaft support is greater than when the intermediate detection member is moved upward on the other side in the front-rear direction far from the shaft support. Larger ones are required.
Therefore, in the conventional one, the upper movement of the intermediate detection member in response to the tilting upward movement of the lower seat plate portion in the front-rear direction is performed, and the upper movement of the other side portion in the front-rear direction far from the shaft support portion is the axis. Since the distance from the branch is long, there is almost no problem even if it is configured to receive the upward movement of the lower seat plate as it is and move upward. Since the distance from the shaft support is short, it is difficult to obtain sufficient force with the upper power from the lower seat plate, so the lower seat plate moves upward while sliding on the inclined portion provided on the intermediate detection member side. It was configured so that the upper power of the intermediate detection member could be reduced.
However, the upward movement of one side portion in the front-rear direction of such an intermediate tilting member is performed in response to the upward movement of the side portion of the lower seat plate portion on the other side in the front-rear direction with respect to the shaft support portion. Therefore, when trying to move the intermediate detection member reliably by reducing the upper power, a long gently inclined upward movement is required, and in order to cope with this, the seat plate is long in the front-rear direction. If such a response is not possible, there is a problem that a weight (balancer) must be provided to support the upward movement of the intermediate detection member as in Patent Document 1. , These have problems to be solved by the present invention.

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 opens and closes an opening that can pass in the front-rear direction by moving up and down. A lower seat that is provided with an opening / closing body and has a seat plate provided at the lowermost end of the opening / closing body that moves upward with respect to the upper seat plate portion that is connected to the opening / closing body and an obstacle. An intermediate detection member that is interposed between the plate portion and the upper and lower seat plates and moves upward in response to the upward movement of the lower seat plate portion, and an obstacle detection sensor that detects the upward movement of the intermediate detection member are provided. In an opening / closing device for construction provided with an obstacle detecting means configured as a vertical member, the intermediate detecting member is supported by the upper seat plate portion so as to be biased to one side in the front-rear direction, and the shaft branch portion. It is provided with a vertical piece portion that hangs down in the vertical direction from the vertical piece and a horizontal piece portion that extends from the lower end portion of the vertical piece portion toward the other side in the front-rear direction, and the horizontal piece portion is an obstacle of the lower seat plate portion. A configuration in which the lateral piece is swingably supported via the shaft support so that the horizontal piece moves upward in response to an upward movement due to contact, and an obstacle detection sensor detects the upward movement of the horizontal piece. In order to do so, the vertical piece portion is provided with a detection receiving portion that is biased to one side in the front-rear direction with respect to the perpendicular line passing through the shaft support portion, and the intermediate detection member moves upward on one side in the front-rear direction of the lower seat plate portion. Occasionally, when the lower seat plate portion is in sliding contact with the detection receiving portion, the vertical piece portion is pushed toward the vertical line side, so that the horizontal piece portion is moved upward to activate the detection operation of the obstacle detection sensor. It is a building opening / closing device equipped with an obstacle detecting means, which is characterized by being configured in.
The invention according to claim 2 is a building provided with the obstacle detecting means according to claim 1, wherein the detection receiving portion is provided on an inclined portion inclined so as to be biased toward one side in the front-rear direction toward the upper side. It is a switchgear.
The invention of claim 3 is characterized in that the obstacle detection sensor is arranged above the horizontal piece portion in a state of being located between the shaft support portion and the other side end portion in the front-rear direction of the horizontal piece portion. It is a building opening / closing device provided with the obstacle detecting means according to Item 1 or 2.
The invention of claim 4 is characterized in that the detection receiving portion is set so that the sliding contact position of the lower seat plate portion that has moved up to the maximum with respect to the detection receiving portion does not cross the perpendicular line passing through the shaft support portion to the other side in the front-rear direction. It is a building opening / closing device provided with the obstacle detecting means according to any one of claims 1 to 3.

According to the first aspect of the present invention, the obstacle detection sensor is used to detect the upward movement of the intermediate detection member that moves upward in response to the upward movement of the lower seat plate due to the contact with the obstacle. When the upper movement of the intermediate detection member is performed by the lower seat plate portion slidingly contacting the detection receiving portion provided on the vertical piece portion provided on one side in the front-rear direction, the detection receiving portion is above the intermediate detection member. It is biased to one side in the front-rear direction from the perpendicular line passing through the shaft support portion that becomes the dynamic support axis, and the lower seat plate portion that abuts here moves upward by pushing the detection operating portion toward the perpendicular line side. As a result, the detection receiving portion can be steeply inclined so that the amount of movement in the front-rear direction on the obstacle detection sensor side is small, which makes it possible to reduce the size and smoothly detect obstacles.
According to the invention of claim 2, when the intermediate detection member moves upward, the vertical piece portion moves to the vertical line side, but the detection receiving portion formed on the vertical piece portion moves forward and backward toward the upper side. Since the structure is biased to one side in the direction, even if the vertical piece moves to the vertical line side, it is possible to avoid impairing the sliding contact of the lower seat plate with the detection receiving part, which is an obstacle. The detection operation of the detection sensor becomes more reliable.
According to the third aspect of the present invention, the space for arranging the obstacle detection sensor can be secured above the horizontal piece portion in a state of being located between the shaft support portion and the other side end portion in the front-rear direction of the horizontal piece portion. Therefore, the efficiency of member arrangement can be improved.
According to the invention of claim 4, even if the lower seat plate portion moves up to the maximum, the sliding contact position of the lower seat plate portion with respect to the detection receiving portion formed on the vertical piece portion is in the front-rear direction along the vertical line passing through the shaft support portion. Since it does not cross the other side, it is possible to maintain a state in which the fulcrum is not crossed until it moves up to the maximum, and it is possible to avoid impairing the smoothness of the upward movement of the intermediate detection member.

It is a front view of a shutter device for a building. It is a top view of a seat plate. It is a front view of a seat plate. It is a side enlarged cross-sectional view of the obstacle detection sensor part of a seat plate. (A) and (B) are operational explanatory views showing a state in which the lower seat plate portion moves upward in a parallel posture. (A) and (B) are operational explanatory views showing a state in which one side of the lower seat plate portion in the front-rear direction moves upward. (A) and (B) are operation explanatory views showing the case where the other side of the lower seat plate portion in the front-rear direction moves upward. (A), (B) and (C) are a front view, a plan view and a side view of the upper seat plate portion. (A), (B) and (C) are a front view, a plan view and a side view of the lower seat plate portion. (A), (B), and (C) are a front view, a plan view, and an enlarged side view of the intermediate detection member.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawing, 1 is a building shutter device (building opening / closing device) provided for opening / closing an opening that can pass in the front-rear direction, and the building shutter device 1 is provided on both the left and right sides of the opening. The guide rail 2, the shutter curtain (opening / closing body) 3 that opens and closes the opening by being guided up and down (up and down) to the guide rail 2, and the shutter curtain 3 provided at the upper end of the opening are wound. It is configured to be equipped with various member devices such as a take-up drum 4, an electric switchgear 5 that drives the take-up drum 4 in the forward and reverse directions, and a control unit 6 that controls the drive of the switchgear 5. It is the same as before. The definition of the front-back direction is that the direction normally passing through the opening is the front-back direction, the front side is "front" and the opposite side (the other side, the hand side) is "rear" with respect to the opening. The definitions before and after are provided for convenience, but it goes without saying that the definition is not limited to this.

At the lowermost end of the shutter curtain 3, a seat plate 7 having a width substantially the same as that of the shutter curtain 3 and long in the left-right direction is provided. An intermediate detection interposed between the upper seat plate portion 8 to be connected (provided), the lower seat plate portion 9 provided so as to be movable up and down with respect to the upper seat plate portion 8, and the upper and lower seat plate portions 9 and 9. It is configured to include an obstacle detection sensor 11 provided in the upper seat plate portion 8 in a state of being arranged between the member 10 and the upper seat plate portion 8 and the intermediate detection member 10, and these will be described in detail below. ..

The upper seat plate portion 8 has an open lower side (lower end edge portion), and is formed in a rugged shape including an upper piece portion 8a on the ceiling side and side piece portions 8b on both front and rear sides. In the present embodiment, the upper piece portion 8a is a first upper piece portion 8d having a raised central (intermediate) portion in the front-rear direction with the front and rear stepped pieces 8c facing in the vertical direction interposed therebetween, and the first upper piece portion 8d. It is formed in a convex shape with a second upper piece 8e arranged in the front-rear direction lower than the first upper piece 8d, but is upward in the center (middle) part in the front-rear direction of the first upper piece 8d. The connecting piece portion 8f is formed so as to project toward. In the upper seat plate portion 8, the connecting piece portion 8f is fixed to the lowermost end slats 3a via a bolt 3b which is a fastening metal fitting.
Further, the side piece portion 8b is provided in a hanging shape from the outer edge of the second upper piece portion 8e in the front-rear direction, and the lower end portion of the side piece portion 8b is horizontally projected in the front-rear direction. One portion of 8 g is formed so as to protrude. Then, of the horizontal piece portion 8g, the portion extending toward the side piece portion 8b on the opposite side (opposing side) is locked for receiving and locking the lower seat plate portion 9 as described later. The receiving part is 8h.

On the other hand, the lower seat plate portion 9 has an open upper side, and has a lower piece portion 9a on the bottom side and front and rear side piece portions 9b provided upright from both front and rear edges of the lower piece portion 9a. The side piece portion 9b is formed in a concave shape by providing the above, and the side piece portion 9b includes a lower first side piece portion 9c erected from the front and rear end edges of the lower piece portion 9a and the first side piece. A step piece portion 9d formed so as to face inward in the front-rear direction from the upper end portion of the portion 9c, a second side piece portion 9e formed upward from the inner end portion in the front-rear direction of the step piece portion 9d, and the first portion. It is formed as having an upper piece portion 9f formed horizontally from the upper end portion of the two side piece portion 9e toward the outside in the front-rear direction, and in the present embodiment, between the front and rear first side piece portions 9c. , And a recessed space S is formed between the second side piece portions 9e in a state of continuing in the vertical direction.

Then, in the lower seat plate portion 9, the second side piece portion 9e is loosely fitted (with a gap (gap) in the front-rear direction) at the inner end in the front-rear direction of the upper seat plate portion locking receiving portion 8h. As a result, the position where the upper piece portion 9f is locked to the upper surface of the locking receiving portion 8h is set as the lower limit, and the position where the step piece portion 9d abuts on the lower surface of the locking receiving piece 8h is set as the upper limit so as to be movable up and down. However, the lower seat plate portion 9 has a natural downward movement posture in which the front and rear upper piece portions 9f are received and locked by the front and rear locking receiving portions 8h of the upper seat plate portion 8. The upper piece portion 9f constitutes a locking portion for locking the lower seat plate portion 9 to the upper seat plate portion 8.
Moreover, in this case, the upward movement of the lower seat plate portion 9 moves upward in a state (parallel state) in which the lower seat plate portion 9 maintains the natural lower movement posture (see FIG. 5) in the front-rear direction. An inclined upward movement in which the upper piece 9f on one side is lifted (see FIG. 6), an inclined upward movement in which the upper piece 9f on the other side is lifted (see FIG. 7), and an inclined upward movement in between these. It is defined as including a movement.

The upward movement posture with respect to the upper seat plate portion 8 when the lower seat plate portion 9 moves upward in this way is a typical example of the upward movement when an obstacle is in contact with the lower seat plate portion 9 and is pinched. When an obstacle comes into contact with the central part in the anteroposterior direction, the obstruction moves up while maintaining the natural downward posture (natural posture) (see FIG. 5), and deviates to one side in the anteroposterior direction. When an object comes into contact with the object, it moves upward in an inclined state in which one side is lifted (see FIG. 6), and when an obstacle comes into contact with the other side in the front-back direction, the other side is lifted. It is possible to show the upward movement in the tilted state (see FIG. 7), and the actual upward movement of the lower seat plate portion 9 is a complex combination of these upward movements, and the obstacle detection sensor as described later. 11 is set to detect any of these upward movements.

Further, in the intermediate detection member 10, one end portion in the front-rear direction is pivotally supported by the upper seat plate portion 8 so as to be swingable in the front-rear direction. That is, the intermediate detection member 10 includes a cylindrical shaft support portion 10a having an upper opening at the upper end portion, and the shaft support portion 10a is front and rear of a pair of front and rear second upper piece portions 8e of the upper seat plate portion 8. It is externally fitted to a columnar bearing portion 8i formed on the lower surface of the second upper piece portion 8e on one side in the direction so as to swing (slide) in the front-rear direction. The intermediate detection member 10 has a vertical piece portion 10b that hangs down from the shaft support portion 10a in the vertical direction (downward) and a lateral portion that extends laterally from the lower end portion of the vertical piece portion toward the other side in the front-rear direction. Between the shaft support portion 10a and the horizontal piece portion 10c in a state of being located on the other side in the front-rear direction with respect to the one-side portion 10c and the vertical piece portion 10b (the other side in the front-rear direction with respect to the vertical line X passing through the shaft support portion 10a described later). It is formed in a substantially L-shape by being provided with a reinforcing piece portion 10d provided so as to be connected, and the reinforcing piece portion 10d is formed of a shaft support portion 10a, a vertical piece portion 10b, and a horizontal piece portion 10c. It has a hollow shape (cylindrical shape) together with one side portion in the front-rear direction, and is configured to reinforce between the L-shaped vertical piece portion 10b and the horizontal piece portion 10c.

Moreover, the vertical piece portion 10b is configured to hang down from a position deviated to one side in the front-rear direction with respect to the vertical line X passing through the shaft support portion (axis center O) 10a. An arc-shaped (arc-shaped) portion 10f is formed so as to bulge toward one side in the front-rear direction from a portion that is biased to one side in the front-rear direction. An inclined portion (including an arc-shaped and linear inclination) 10 g inclined toward the other side is formed, and in the inclined process near the lower end portion of the inclined portion 10 g, the vertical line X is crossed to the other side in the front-rear direction. At a position lower than the locking receiving portion 8h, the lateral piece portion 10c is connected to one end portion in the front-rear direction via a substantially L-shaped connecting portion 10h.

On the other hand, the horizontal piece portion 10c is provided so as to extend laterally from the portion connected to the vertical piece portion 10b toward the other side in the front-rear direction. A first horizontal piece portion 10i provided horizontally toward the other side in the front-rear direction up to a position beyond the center position (seat plate center position) M in the front-rear direction of 8, and the other side in the front-rear direction of the first horizontal piece portion 10i. It extends in an inclined manner so as to rise from the end to the other side in the front-rear direction, and the upper end of the inclination (the other end in the front-rear direction) is set to reach the height of the upper piece 9f of the lower seat plate portion 9. The second horizontal piece portion 10j and the upper piece portion on the other side in the front-rear direction of the lower seat plate portion 9 extending horizontally from the other end portion in the front-rear direction of the second horizontal piece portion 10j toward the other side in the front-rear direction. It is configured to include a third horizontal piece portion 10k that reaches 9f and abuts on the upper piece portion 9f from above.

Then, in the process of closing the opening in which the shutter curtain 3 is lowered, an obstacle comes into contact with the lower seat plate portion 9 from below, so that the lower seat plate portion 9 moves upward with respect to the upper seat plate portion 8. In response to this, the intermediate detection member 10 moves upward for obstacle detection with the shaft support portion 10a as a fulcrum. The upward movement of the intermediate detection member 10 will be described below.
As described above, in the state where the lower seat plate portion 9 is not in contact with obstacles, the upper piece portions 9f on both sides in the front-rear direction come into contact with the locking receiving portions 8h on both sides in the front-rear direction from above. When an obstacle comes into contact with the lower seat plate portion 9 in this state, the lower seat plate portion 9 is in the natural lower movement posture due to the contact position. Upward movement (first upward movement) in a state where the upper piece portions 9f on both sides in the front-rear direction are lifted and separated from the locking receiving portions 8h on both sides, and the upper piece portion 9f on one side in the front-rear direction is maintained. Is lifted from the locking receiving portion 8h on the side, and the upper piece portion 9f on the other side is in an inclined state of upward movement (second upward movement) in contact with the locking receiving portion 8h on the other side, and the other side in the front-rear direction. The upper piece portion 9f is lifted from the locking receiving portion 8h on the side thereof, and the upper piece portion 9f on one side in the front-rear direction moves upward in an inclined state in contact with the locking receiving portion 8h on the side (third upper part). The upper movement with the movement) as a typical state will be performed, and the upper movement of the intermediate detection member 10 will be described using the upper movement in this typical state.

First, the intermediate detection member 10 has a corner between the upper piece portion 9f and the second side piece portion 9e on one side in the front-rear direction when the lower seat plate portion 9 is in a natural hanging posture without any obstacle contact. The portion 9g is separated from the vertical piece portion 10b, and on the other side in the front-rear direction, the third horizontal piece portion 10k is in a mounted state in which the third horizontal piece portion 10k is in contact with the upper piece portion 9f from above. When 9 makes the first and third upward movements in which the upper piece portion 9f on the other side in the front-rear direction moves upward, the intermediate detection member 10 has a corner portion of the lower seat plate portion 9 at the initial stage of the upward movement. Since 9g is separated from the vertical piece portion 10b, the third horizontal piece portion 10k moves upward by being pushed up by the upper piece portion 9f on the other side in the front-rear direction.
When the upward movement in this case is the third upward movement in which only the other side in the front-rear direction is lifted, the intermediate detection member 10 has the third horizontal piece portion 10k due to the upper piece portion 9f on the other side in the front-rear direction. The upward movement that is pushed up will be a continuous upward movement, but when the lower seat plate portion 9 is the first upward movement (upward movement on both sides in the front-rear direction) in a state where the natural lower movement posture is maintained. In the case where the lower seat plate portion 9 rises in an ideal state located at the center position in the front-rear direction as shown in FIG. 5, the corner portion 9g on one side in the front-rear direction of the lower seat plate portion 9 becomes the inclined portion 10e. Since the lower seat plate portion 9 is separated from the above (separated by play), the lower seat plate portion 9 comes into contact with the inclined portion 10 g of the vertical piece portion 10b from the middle of the upward movement. The seat plate portion 9 swings in response to the second upward movement, but if the lower seat plate portion 9 is displaced in the front-rear direction, the position and position of the displacement are displaced. It will swing (upward) according to the amount of deviation. In that case, the corner portion 9g moves upward in a state of being in contact with the inclined portion 10g from the beginning, and the third horizontal piece portion 10k is on the other side in the front-rear direction from the beginning without the corner portion 9g contacting the inclined portion 10g. The upper movement pushed up by the single portion 9f is set as a bipolar state, and the combined upper movement is actually performed.

On the other hand, when the lower seat plate portion 9 makes the second upward movement, the upper piece portion 9f on the other side in the front-rear direction remains in contact with the locking receiving portion 8h, and the upper piece portion 9f on the other side in the front-rear direction is on the upper side. One portion 9f moves upward in an inclined shape, and the corner portion 9g on the side abuts on the inclined portion 10g at a position deviated to one side in the front-rear direction from the perpendicular line X of the shaft support portion 8i. When the corner portion 9g rises in this contact state, the corner portion 9g rises while sliding the inclined portion 10g, but the inclined portion 10g moves toward one side in the front-rear direction toward the upper side. Since the vertical piece portion 10b is set to be biased, the vertical piece portion 10b is pushed toward the other side in the front-rear direction by receiving the sliding rise of the corner portion 9g. As a result, the intermediate detection member 10 is set to swing so that the third horizontal piece portion 10k moves upward with the shaft support portion 10a as a fulcrum, and the obstacle detection sensor 11 performs a detection operation in this upward movement process. Therefore, the inclined portion 10g configured in this way pushes the vertical piece portion 10b toward the perpendicular line X direction when the lower seat plate portion 9 slides in the contact state. It constitutes 10e.
In this case, when the third upward movement of the lower seat plate portion 9 is in the maximum state, that is, the stepped piece portion 9d on one side in the front-rear direction of the lower seat plate portion 9 is the horizontal piece portion 8b of the upper seat plate portion 8. When the corner portion 9g on the side is in contact with the above portion, the corner portion 9g exceeds the inclined portion 10g and reaches the upper half portion of the arc-shaped portion 10f. It is supposed to be located on the side deviated to one side in the front-rear direction with respect to the vertical line X, and is set not to cross the other side in the front-back direction.

On the other hand, the obstacle detection sensor 11 is configured by using a general-purpose micro switch of a normally closed contact (B contact) type in the present embodiment, but the sensor main body 11a is shaken via a support shaft 11b. The movably provided detection lever (corresponding to the "detection actuating body" of the present invention) 11c receives the urging force of the return ammunition 11c (in the present embodiment, the self-weight lowering force of the detection lever 11c is also received. The switch lever 11d provided on the sensor main body 11a is pushed and moved by moving downward, and in this state, the obstacle detection sensor 11 is in the non-detection state (OFF detection state). Then, when the detection lever 11c moves upward as described later, the switch lever 11d moves to the natural posture side under the urging force of the interior return ammunition (not shown) because the pressing is released. As a result, the obstacle detection sensor 11 is set to switch to the detection state (ON detection state).

In the present embodiment, the obstacle detection sensor 11 configured in this way is attached to the upper seat plate portion 8 via the inverted L-shaped metal fitting 12, but the attachment position thereof is the upper seat plate portion 8. On the lower surface of the first upper piece portion 8d of the above, the position is deviated to the other side in the front-rear direction with respect to the seat plate center position M, and is arranged at a position facing above the first and second horizontal piece portions 10i and 10j. In the obstacle detection sensor 11 attached in this way, the detection lever (corresponding to the "detection actuating body" of the present invention) 11c is substantially located at the seat plate center position M. The first horizontal piece portion 10i is set to face the intermediate position in the front-rear direction, that is, the concave space S is arranged to face downward. In a natural state (normal state, non-detection state) in which the lower seat plate portion 9 does not come into contact with an obstacle, the lower end edge of the detection lever 11c is the opposite first horizontal piece portion 10i of the lower seat plate portion horizontal piece portion 10c. In this state, the obstacle detection sensor 11 is in a natural state in which the detection lever 11c is moved downward as described above, and is in a non-detection state.

When the lateral piece portion 10c of the intermediate detection member 10 moves upward as described above with the shaft support portion 10a as a fulcrum due to the upward movement of the lower seat plate portion 9 due to the contact with an obstacle from such a non-detection state, it is detected. The detection lever 11c is pushed up when the lever 11c comes into contact with the intermediate portion in the front-rear direction of the first lateral piece portion 10i that has moved upward, whereby the obstacle detection sensor 11 switches from the non-detection state to the detection state ( The switch is switched), and in this way, the first lateral piece portion 10i is configured with a detection operating portion for detecting and operating the detection lever 11c.

In this case, the first horizontal piece portion 10i is in a gently inclined state in which one side in the front-rear direction (vertical piece portion 10b side) is lowered when it comes into contact with the detection lever 11c. As the upward movement of the plate portion 9 progresses, the first lateral piece portion 10i becomes higher on the other side in the front-rear direction and changes from the gently inclined state to the steeply inclined state, thereby pushing up the detection lever 11c. Will be advanced and the obstacle detection sensor 11 will detect the obstacle.
That is, the movement (sliding) of the detection lever 11c with respect to the first horizontal piece portion 10i at this time is such that one side in the front-rear direction moves upward so that the intermediate detection member 10 moves upward while receiving the upward movement of the first horizontal piece portion 10i. This includes moving the first horizontal piece portion 10i in an inclined state that changes to be lowered and steeply inclined in the downward direction, thereby pushing up the first horizontal piece portion 10i of the detection lever 11c while sliding. The operation can be smoothly performed, and the detection operation of the obstacle detection sensor 11 is reasonably improved in reliability.

Moreover, as described above, the intermediate detection member 10 moves upward with the shaft support portion 10a as a fulcrum in response to the upward movement caused by the seat plate portion 9 coming into contact with the obstacle, and the obstacle detection sensor 11 detects this. Therefore, the obstacle detection operation is performed. In this case, the intermediate detection member 10 has an inclined portion in the concave space S formed in the lower seat plate portion 9 in a state where there is no obstacle contact. A part of 10 g and the first and second horizontal pieces 10i and 10j are shallowly inserted. Then, when the intermediate detection member 10 receives the upward movement corresponding to the obstacle contact of the lower seat plate portion 9 from this state, the intermediate detection member 10 further becomes one of the third horizontal piece portions 10k. The space S is set so as to penetrate deeply into the space S including the portion (one side portion in the front-rear direction), and thus the storage space for the intermediate detection member 10 that swings in response to obstacle detection is lowered. It has a structure secured to the seat plate portion 9.
Further, in this case, the obstacle detection sensor 11 is also set so that the lower portion also enters the space S of the lower seat plate portion 9 which has moved upward due to the obstacle contact.
In the figure, 13 is a steady rest material provided at both left and right ends of the upper seat plate portion 8, and 14 is an extension member provided at both left and right end portions of the lower seat plate portion 9, both of which are guide grooves of the guide rail 2. It is set to fit inside. Further, 15 is an operation switch provided for forward / reverse drive of the switch 5 and its stop, and 16 is a transmitter for transmitting a detection signal from the obstacle detection sensor 11.

In the present embodiment configured as described above, when an obstacle comes into contact with the lower seat plate portion 9 in the process of closing the shutter curtain 3, the lower seat plate portion 9 is the obstacle. The obstacle detection sensor 11 operates the obstacle detection operation in response to the upward movement of the intermediate detection member 10 interlocked with the upward movement depending on the contact position. In this case, the intermediate detection member 10 moves in the front-rear direction. When the lower seat plate portion 9 comes into contact with the vertical piece portion 10b on one side (the shaft support portion 10a side) to move the intermediate detection member 10 upward, the vertical piece portion 10b is connected to the vertical piece portion 10b from the vertical line X passing through the shaft support portion 10a. A detection receiving portion 10e in a state of being deviated on one side in the front-rear direction is provided, and a corner portion 9g of the lower seat plate portion 9 in contact with the detection receiving portion 10e makes the detection receiving portion 10e perpendicular to the vertical line X direction, that is, the other in the front-rear direction. By pushing it toward the side, the intermediate detection member 10 is moved upward.
As a result, the detection receiving portion 10e can be steeply inclined so that the amount of movement in the front-rear direction on the obstacle detection sensor 11 side is small, and the intermediate detection member 10 can be simplified and made compact, resulting in a smooth obstacle. It will be possible to detect.

Moreover, in this case, the detection receiving portion 10e is provided on the inclined portion 10g that is inclined so as to be biased toward one side in the front-rear direction toward the upper side, and as a result, when the intermediate detection member 10 moves upward, the vertical piece portion 10b Will move to the perpendicular line X side, but the detection receiving portion 10e is configured to be biased toward one side in the front-rear direction toward the upper side, and even if the vertical piece portion 10b moves to the perpendicular line X side, the detection receiving portion 10e It is avoided that the sliding contact of the lower seat plate portion 9 is surely damaged (disengaged) with respect to the above, and the detection operation of the obstacle detection sensor is further improved.

Moreover, in this case, the obstacle detection sensor 11 is located between the shaft support portion 10a and the third horizontal piece portion 10k on the other side in the front-rear direction of the horizontal piece portion 10c, and the horizontal piece portion 10c (first horizontal piece portion). Since it is arranged above 10i), it is easy to secure an arrangement space for the obstacle detection sensor 11, and the efficiency of member arrangement can be improved. In particular, in the present embodiment, since the obstacle detection sensor 11 is arranged above the concave space S provided in the lower seat plate portion 9, the obstacle detection sensor 11 can be arranged using the concave space S. become.

Further, in this case, when the lower seat plate portion 9 moves up to the maximum (see FIGS. 5 and 6), the sliding contact position of the lower seat plate portion 9 with respect to the detection receiving portion 10e formed on the vertical piece portion 10b is Since the vertical line X passing through the shaft support portion 10a does not cross the other side in the front-rear direction, the shaft support portion of the intermediate detection member 10 is subjected to the lower seat plate portion 9 sliding in contact with the detection receiving portion 10e on the vertical piece portion 10b side. The upward movement with 10a as the fulcrum can be maintained until the upper movement does not cross the fulcrum to the maximum, and it is possible to avoid impairing the smoothness of the upward movement of the intermediate detection member 10.

It goes without saying that the present invention is not limited to that of the embodiment, but in the embodiment, the shutter curtain 3 is connected to the plate-shaped slats in a series in the vertical direction. The structure is not limited to this, but the so-called pipe type (grill type) in which pipe materials are arranged at intervals in the vertical direction, and the slats are tubular (follow-shaped). Needless to say, it can be executed even if it has an appropriate shape such as a panel plate or a panel plate.

INDUSTRIAL APPLICABILITY The present invention can be used for a building switchgear provided with obstacle detecting means built in an opening such as an entrance / exit of a building.

1 Architectural shutter device 2 Guide rail 3 Shutter curtain 3a Bottom end slats 7 Seat plate 8 Upper seat plate 8h Locking receiving part 9 Lower seat plate 10 Intermediate detection member 10a Shaft branch 10b Vertical piece 10c Horizontal piece 10e Detection receiving Part 10i 1st horizontal piece 10j 2nd horizontal piece 10k 3rd horizontal piece 11 Obstacle detection sensor 11c Detection lever M Seat plate center O Axis center S Recessed space X Vertical wire

Claims (4)

Equipped with an opening and closing body that opens and closes the opening that can pass in the front-back direction by moving up and down.
The seat plate provided at the lowermost end of the switchgear is vertically connected to the upper seat plate portion connected to the switchgear, the lower seat plate portion that moves upward with respect to the upper seat plate portion when an obstacle comes into contact with the switchgear. It is configured as being provided with an intermediate detection member that is interposed between the seat plates and moves upward in response to the upward movement of the lower seat plate, and an obstacle detection sensor that detects the upward movement of the intermediate detection member. In a building switchgear equipped with obstacle detection means
A shaft support portion that supports the intermediate detection member on the upper seat plate portion so as to be biased to one side in the front-rear direction, a vertical piece portion that hangs down from the shaft support portion in the vertical direction, and a lower end portion of the vertical piece portion. The shaft support portion is provided with a horizontal piece portion extending from the front side to the other side in the front-rear direction, and the horizontal piece portion moves upward in response to an upward movement due to an obstacle contact of the lower seat plate portion. In addition to being configured to swing freely through the shaft, the obstacle detection sensor is configured to detect the upward movement of the lateral piece.
The vertical piece portion is provided with a detection receiving portion that is biased to one side in the front-rear direction with respect to the perpendicular line passing through the shaft support portion.
When one side of the lower seat plate portion in the front-rear direction moves upward, the intermediate detection member detects obstacles by sliding the lower seat plate portion with the detection receiving portion and pushing the vertical piece portion toward the vertical line side. A building switchgear equipped with obstacle detection means, which is configured to move the lateral piece upward to detect and operate the sensor. The architectural switchgear provided with the obstacle detecting means according to claim 1, wherein the detection receiving portion is provided in an inclined portion inclined so as to be inclined to one side in the front-rear direction toward the upper side. The obstacle according to claim 1 or 2, wherein the obstacle detection sensor is arranged above the horizontal piece portion in a state of being located between the shaft support portion and the other side end portion in the front-rear direction of the horizontal piece portion. A building switchgear equipped with object detection means. Claims 1 to 3 are characterized in that the detection receiving portion is set so that the sliding contact position of the lower seat plate portion that has moved up to the maximum with respect to the detection receiving portion does not cross the perpendicular line passing through the shaft support portion to the other side in the front-rear direction. A switchgear for construction provided with the obstacle detecting means according to any one of.

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