JPH08105280A - Obstruction sensing device for opening/closing body - Google Patents

Abstract

PURPOSE: To improve accuracy by providing a protruding piece at an obstruction sensing piece provided at the lower end of a motor-driven shutter, and providing an operating piece with the inclined face to be brought into contact with the protruding piece, thereby actuating a switch correctly even in the case of the sensing piece obliquely coming in contact with the obstruction. CONSTITUTION: In the case of an obstruction existing in an opening part 2 on the way of lowering a shutter 3 by a motor M, a sensing piece 20 comes in contact with the obstruction and moves upward so as to push up an oscillating operating piece 30 and thereby to press the actuator 42 of a switch. The motor M is thereby stopped. In the case of the obstruction coming in contact with the outside in the inner-outer direction of the sensing piece 20 so as to cause a base 21 to incline, a protruding piece 25 presses the inclined plate 37 of the operating piece 30, and the operating piece 30 presses the actuator 42. In the case of the base 21 being horizontal or the inside thereof being lifted, the operating piece 30 is pushed up without the action of the protruding piece 25, and the obstruction is sensed positively without forming a dead angle to the obstruction. The sensing accuracy of the shutter can thereby be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an opening / closing obstacle sensing device used as a safety mechanism for an opening / closing body attached to an opening of a building such as an electric shutter.

[0002]

2. Description of the Related Art In an electric shutter or the like attached to an opening of a building, a slat curtain constituting the shutter descends from above due to closing of the opening. At that time, there is an article or a person directly under the slat curtain. In this case, this article or a person becomes an obstacle, and this obstacle is caught between the slat curtain and the floor surface, which may cause a damage accident.

In order to prevent such an accident, an obstacle detecting device for a shutter as disclosed in Japanese Utility Model Publication No. 1-37111 has been devised. This obstacle sensing device has a decorative cover having a substantially U-shaped cross section with an open lower surface on a seat plate portion serving as a drainage at the lowermost end of the slat curtain,
A structure in which a movable bottom plate vertically movably suspended on the lower surface of the decorative cover and a micro switch disposed in the inner space thereof are configured, and the floating of the movable bottom plate in contact with an obstacle is detected by the micro switch. Has become.

[0004] However, in order to detect the floating of the movable bottom plate that is continuous in the long width direction of the slat curtain, the obstacle detection device cannot detect the obstacle unless a large number of microswitches are provided in the decorative cover. It is possible, so that the electrical configuration such as the wiring of these microswitches is complicated, and there are drawbacks such as malfunction.

In view of this, FIG.
As disclosed in Japanese Unexamined Patent Publication (Kokai) No. 6-206, slat curtain 6
1 is a decorative cover 6 having a bottom surface opened at the lowermost seat plate portion.
2, a cantilever movable bottom plate 63 having one edge pivotally attached to one side edge of the opening of the decorative cover 62 and the other edge being a swing end, and formed inside the decorative cover 62. A hollow circular pipe-shaped rotating body 65 slidably disposed on the upper surface of the curved concave groove-shaped receiving plate 67 and having an operating piece 64 protruding from a part of the outer peripheral surface; An obstacle sensing device has been devised which comprises a microswitch 66 abutting on a piece 64.

According to the obstacle sensing device 60, when the slat curtain 61 contacts the obstacle B during the closing operation,
The movable bottom plate 63 pivots about the pivotal portion to swing the swing end upward, and at the same time pushes the operating piece 64 of the rotating body 65 upward to slide the rotating body 65 on the upper surface of the receiving plate 67. When the actuator 64 of the micro switch 66 is rotated, the actuator of the micro switch 66 is pressed to detect it.

Then, this sensing signal is sent to the shutter control section via the transmitter / receiver, and the slat curtain 61 is sent.
Is stopped, or the drive motor is rotated in the reverse direction to rise again.

[0008]

However, in the above-described conventional obstacle sensing device for a shutter, the movable bottom plate 63 for sensing the presence or absence of an obstacle is cantilevered at one edge. Therefore, when the obstacle B comes into contact with the other edge, which is the swing end not pivotally supported, the movable bottom plate 63 moves up and the obstacle B can be sensed, but it is pivotally supported. When the obstacle B is brought into contact with one edge, the movable bottom plate 63 does not move upward, so that the obstacle B cannot be sensed and a blind spot occurs.

Further, since the rotating body 65 is rotated by sliding on the upper surface of the receiving plate 67, an excessive load is applied to the rotation of the rotating body 65.
As a result, in order for the operating piece 64 provided on the rotating body 65 to rise to such an extent that the micro switch 66 is operated, an excessive pushing force needs to be applied to the movable bottom plate 63, so that highly accurate obstacle detection can be performed. There was a problem of not having. In this way, when high-precision obstacle detection cannot be performed,
When a person is pinched as an obstacle, an excessive load is applied to the person, and there is a problem that the pinched person may be seriously injured.

Further, in this conventional obstacle sensing device, when the slat curtain is fully raised and is in a fully opened state,
The movable bottom plate 63, which is the lowermost end of the slat curtain 61,
Although the movable bottom plate 63 is attached to the decorative cover 62 in a cantilever manner, the movable bottom plate 63 is exposed in an inclined state, although the movable bottom plate 63 is stopped in the lintel forming the upper edge of the building opening. Therefore, there is a drawback that it looks bad in terms of design.

Therefore, in order to solve the above-mentioned problems, the present invention provides an open / close body which is capable of surely and accurately sensing the obstacle when the open / close body such as a shutter is closed during the closing operation. An object is to provide an obstacle sensing device.

[0012]

Means for achieving the above object will be described below with reference to the drawings corresponding to the embodiments. The opening / closing body obstacle sensing device 1 of the present invention serves as a moving end of the opening / closing body 3 disposed in the building opening 2,
The building opening 2 is provided on the end surface of the building opening 2 facing the edge 2a.
A frame body 10 provided with a groove opening 14 entirely in the longitudinal direction that is the width direction of the frame body, a receiving piece 18 protruding from an inner surface of the frame body 10, and opposing edges of the groove opening 14 of the frame body 10. A pair of supporting strips 15 and 15 provided in the portion for reducing the opening width of the groove opening 14, and a substrate 21 for closing the groove opening 14 of the frame body 10, and one surface of the substrate 21 has A pair of ridges 22 having a hook-shaped tip are provided so as to be protruded and supported by the support strips 15 so that they can enter and exit the groove opening 14, respectively. Each of the protruding ridges 22, 22 is provided between the front ends of the substrate 2.
Parallel piece 24 and groove opening 14 of frame 10
Of the sensing piece 20, each of which is formed with a projecting piece 25 extending inward, a bottom surface 36a of the sensing piece 20 that abuts the parallel piece 24, and an inclined contact surface that abuts the projecting piece 25 of the sensing piece 20. At one side edge of the blade 31 having the contact surface 37a, a hook piece 33 that engages with the receiving piece 18 in a suspended state is provided in a protruding manner.
The hook piece 33 is disposed so as to be swingable in the frame 10, and the wing plate 3 is attached to the hook piece 33.
1 is provided, and when the sensing piece 20 enters the frame 10, the weight 10 extends through the parallel piece 24 and / or the protruding piece 25.
An operation piece 30 that swings in a depth direction of the frame, and a detection unit 40 that is provided on the frame 10 and detects the swing of the operation piece 30 when the sensing piece 20 enters the frame 10; It is characterized by having.

Further, the obstacle detection device 1 for an opening / closing body of the present invention serves as a moving end of the opening / closing body 3 arranged in the building opening 2, and the building opening is formed on the end face facing the edge 2a of the building opening. The groove opening 14 is entirely through in the longitudinal direction, which is the width direction of 2.
, A receiving piece 18 protruding from an inner surface of the frame 10 and extending inward from the groove opening 14 of the frame 10, and opposing edges of the groove opening 14 of the frame 10. A pair of supporting strips 15 and 15 provided in the portion for reducing the opening width of the groove opening 14, and a substrate 21 for closing the groove opening 14 of the frame body 10, and one surface of the substrate 21 has A pair of ridges 22 having a hook-shaped tip are provided so as to be protruded and supported by the support strips 15 so that they can enter and exit the groove opening 14, respectively. Each of the protruding ridges 22, 22 is provided between the front ends of the substrate 2.
Parallel piece 24 and groove opening 14 of frame 10
Sensing pieces 20 each formed with a projecting piece 25 extending inward, a bottom surface 56a that contacts the parallel piece 24 of the sensing piece 20, and a contact surface that contacts the projecting piece 25 of the sensing piece 20. 57a and one side edge of the blade 51 is integrally provided on a part of the outer surface of the hollow pipe-shaped support 52, and
A groove-shaped locking portion 53 that engages with the receiving piece 18 is formed on the outer bottom surface of the support body 52, and the frame portion 10 is formed by the locking portion 53.
A weight piece 54 is provided so as to be swingable inside, and a weight piece 54 is protruded from a hollow inner side face of the support body 52 opposite to the side face on which the wing plate 51 is provided. Frame 10
When entering the frame 10, the operating piece 50 that swings in the depth direction of the frame 10 via the parallel piece 24 and / or the protruding piece 25, and the sensing piece 20 provided on the frame 10 Detecting means 40 for detecting the swing of the operating piece 50 when the operating piece 50 enters the frame 10.

[0014]

When the opening / closing body 3 is in the closing operation and there is an obstacle B on its moving track, the obstacle B is attached to the substrate 21 of the sensing piece 20 provided on the frame body 10 via the ridges 22 and 22. The sensing piece 20 moves into the opening groove 14 of the frame 10 by the obstacle B, and the parallel piece 24 and / or the projecting piece 25 of the sensing piece 20 causes the operating piece 30 to move in the depth direction of the frame 10. Rock to. The detection means 40 detects the swing of the actuating piece 30, and stops or reverses the movement of the opening / closing body 3 by this detection signal.

When the opening / closing body 3 is closed and the obstacle B is at a position deviated to one of the front and rear edges with respect to the frame 10, the sensing piece 20 becomes one of the ridges 22.
Only the side is inclined and rises, but the parallel piece 24 or the projection piece 25 provided on the raised ridge 22 raises the operating piece 30.

Thus, even when the sensing piece 20 comes into contact with the obstacle B in a straight or diagonal direction, the sensing piece 20 can enter the frame 10 and the sensing piece 20 Parallel piece 24 and protruding piece 2 provided in
5 swings the actuating piece 30 via the bottom surface 36a or the contact surface 37a of the actuating piece 30, so that it is on the movement trajectory of the opening / closing body 3, that is, between the frame body 10 and the edge portion 2a of the building opening 2. An obstacle B can be reliably detected without creating a blind spot.

Since the operating piece 30 is engaged in the frame 10 with the hook pieces 33 in a suspended state, the operating piece 3
The swinging of 0 is performed smoothly, and the weight piece 34 provided on the operating piece 30 assists the swinging of the operating piece 30, so that the operating piece 30 is further smoothly swung.

[0018]

1 is a schematic front view of a shutter provided with an obstacle detection device for an opening / closing body according to the present invention. As shown in FIG. 1, the opening / closing body obstacle sensing device 1 is provided in an electric shutter S or the like arranged in a building opening 2.

The electric shutter S is a lightweight shutter composed of the slat curtain 3 as an opening / closing body, a panel shutter (not shown) composed of a panel plate as an opening / closing body, and the like. The obstacle sensing device 1 of the present invention is arranged at the draining portion which is the lowermost end.

First, a first embodiment of the obstacle sensing device according to the present invention will be described. FIG. 2 is a side sectional view showing a first embodiment of an obstacle detection device for an opening / closing body. The obstacle sensing device 1 according to this embodiment includes a frame 10, a sensing piece 20, and an operating piece 3.
0 and the detection means 40.

First, the frame 10 is the lowermost end of the slat curtain 3, which is the moving end for opening and closing the building opening 2, and the lower edge 2a of the building opening 2, that is, the slat curtain facing the floor surface. 3 is provided on the lower end face so as to extend completely in the longitudinal direction that is the width (left-right) direction of the building opening 2.

Further, as shown in FIG. 2, the frame body 10 has an upper plate 12 having an engaging piece 11 to be engaged with the slat curtain 3, and extends downward from both ends of the upper plate 12 and is mutually It has a pair of side plates 13 and 13 facing each other, and is formed in a substantially U-shaped cross section in which a groove opening 14 is formed toward the lower side (floor surface).

The groove opening 14 of the frame 10 has a groove opening 1
A pair of support strips 1 for reducing the opening width of the groove opening 14 from the vicinity of the lower end 13a of each of the side plates 13, 13 forming both edges of the side plate 13.
5, 15 are formed integrally with the frame body 10.

The pair of support strips 15 and 15 are directed inward with respect to the groove opening 14 of the frame body 10, as shown in FIG.
As shown in FIG. 3, the respective side plates 13 are provided via stepped portions 16 having a substantially L-shaped cross-section and extending integrally from the lower side of the inner surface of each side plate. Narrow grooves 17, 17 opening downward (to the floor surface 2a) are formed between the lower ends 13a, 13a of the side plates 13, 13 and the steps 16, 16, respectively. Further, a receiving piece 18 having a substantially J-shaped cross section is provided on the inner surface, which is the lower surface of the upper plate 12 of the frame 10, in a vertical direction. The receiving piece 18 is formed with the groove-shaped concave portion 18a facing upward, and has a small strip 18c protrudingly formed on a curved lower surface.

Next, the sensing piece 20 has a flat plate-like substrate 21 formed along the longitudinal direction of the frame body 10 and capable of closing the groove opening 14 of the frame body 10. And FIG.
As shown in FIG. 2, the ridges 22, 22 extending perpendicularly to one surface which is the upper surface thereof and provided in pairs in the width direction are formed integrally with the substrate 21. .

At the tips of the ridges 22, 22, hook-like tips 23, 23 formed in a generally hook shape and facing outward (width) in parallel with the substrate 21 are respectively provided. And are formed integrally. Further, a parallel piece 24 parallel to the substrate 21 is provided between the tips of the ridges 22, 22.
2 and one of the ridges 22 (FIG. 2) on the upper surface of the parallel piece 24 and at a position facing the receiving piece 18 with the sensing piece 20 attached to the frame 10.
In the vicinity of the tip (middle right), a protruding piece 25 extending vertically from the parallel piece 24 is integrally formed.

Further, in the vicinity of both end portions in the width direction of the substrate 21,
Upright pieces 26, 26 extending vertically upward are formed.

The sensing piece 20 includes a pair of ridges 2.
Each of the hook-shaped tips 23, 23 of 2, 22 has the above-mentioned supporting strip 1
The frame 10 is attached to and supported by the frame body 10 so as to be suspended, and is provided so as to be able to move in and out of the groove opening 14 of the frame body 10, that is, to be vertically movable. , Parallel piece 24 and projection piece 25
Are extended inwardly of the groove openings 14 of the frame body 10, and the upright pieces 26, 26 are each loosely fitted in the respective inward directions of the narrow grooves 17, 17 of the frame body 10 and extend. It comes out.

Next, the operating piece 30 is fully penetrated in the longitudinal direction similarly to the sensing piece 20, and has a base plate 31 as shown in FIG. On one side edge of this blade 31,
Pendulum plate 32 bent in the middle and formed in a substantially Z-shaped cross section
Are continuously provided. Further, a hook piece 33 having a substantially inverted U-shaped cross section is formed on one side edge of the wing plate 31 on which the pendulum plate 32 is provided, that is, between the pendulum plate 32 and the wing plate 31. Of the frame body 10 is engaged with the recess 18a of the receiving piece 18 of the frame body 10 in a suspended state,
The operating piece 30 is attached so as to be swingable in the frame body 10 around the hook piece tip 33a. The free end 32a, which is the tip of the pendulum plate 32, is provided with a weight piece 34 extending downward. The tip 33a of the hook piece 33 and the upper surface of the pendulum plate 32 are formed facing each other with a predetermined distance, and this distance is
The length is set to be slightly longer than the length between the bottom surface of the concave portion 18a of the receiving piece 18 and the tip (lower end) of the strip 18c.

Further, the wing plate 3 forming the base of the operating piece 30
A vertical plate 35 extending vertically downward with respect to the plate surface of the wing plate 31 and a lower surface of the wing plate 31 are formed continuously at a lower end of the vertical plate 35 so as to be parallel to the wing plate 31 and have a lower surface serving as a bottom surface 36a. A bottom plate 36 and an angle of elevation from an edge of the bottom plate 36 (FIG. 2)
It is formed of a slope 37 continuously formed at an angle to the upper right (middle right), the outer surface of which is an abutment surface 37a, and a tip end portion of which is formed continuously with a part of the pendulum plate 32. An oscillating body 38 formed in each pipe shape is provided.

The weight of the oscillating body 38 is
Is suspended by the hook pieces 33, the pendulum plate 32
The weight piece 34 is set to be higher than the horizontal, that is, the rocking body 38 assists the clockwise rotation in FIG. In a normal state, which is not performed, the bottom surface 36a of the bottom plate 36 contacts the upper surface of the parallel piece 24 of the sensing piece 20 in the frame 10 as shown in FIG.
The abutting surface 37a of the inclined plate 37 abuts on the tip of the zero protruding piece 25.

The operating piece 30 is connected to the sensing piece 2.
When the sensing piece 20 rises as shown in FIG. 3, the sensing piece 20 is pushed up by the parallel piece 24 and / or the protruding piece 25, so that the frame piece 10 is centered on the hook piece tip 33 a. It is configured to swing back, that is, upward.

Next, the detecting means 40 includes the actuator 4
2 is a micro switch 41 arranged on the lower surface,
As shown in FIG. 2, the distal end of the actuator 42 is attached to the upper plate 12 of the frame body 10 so as to extend into the frame body 10.

The tip of the actuator 42 of the microswitch 41 is connected to the above-described operating piece 3 inside the frame 10.
0 is located so as to be in contact with the upper surface of the wing plate 31, and the wing plate 31 swings upward in the elevation direction due to the swing of the operating piece 30, which is detected and connected to the microswitch 41. The transmitted transmitter 43 transmits a sensing signal.

The micro switch 41 and the transmitter 43 connected to the micro switch 41 are substantially integrated, and as shown in FIG. 1, only one position is provided near one end of the frame body 10 in the longitudinal direction. Further, a receiver 44 corresponding to the transmitter 43 is provided on the bottom surface of the storage portion 4 of the slat curtain 3 arranged at the upper edge of the building opening 2 and controls the elevation of the slat curtain 3. (Not shown).

Hereinafter, the operation of the obstacle sensing device 1 according to the first embodiment having the above configuration will be described. First, when the slat curtain 3 descends by the closing operation, and there is an obstacle B below the slat curtain 3, the substrate 21 of the sensing piece 20 contacts the obstacle B. The sensing piece 20 is, as shown in FIG.
The parallel piece 2 of the sensing piece 20 rises due to the obstacle B.
4 and the projecting piece 25 are the bottom plate 36 of the rocking body 38 of the operating piece 30.
a and the operating piece 3 by contact with the contact surface 37a.
0 is swung upward about the tip 33a of the hook piece 33.

At this time, when the operating piece 30 swings, the weight of the swinging member 38 alone does not increase due to the weight of the weight piece 34 provided at the free end of the pendulum plate 32. The swing, that is, the load for ascending is reduced, and the operating piece 30 is swung with a small load.
At this time, the small strip 18c of the receiving piece 18 is moved so that the hook piece 33 does not float up from the receiving piece 18.
The upper surface of the pendulum plate 32 is in contact with the upper surface of the pendulum plate 32 so as to regulate the floating.

Then, the wing plate 31 of the operating piece 30 pushes the actuator 42 of the micro switch 41, whereby the micro switch 41 outputs a detection signal, and transmits this signal to the receiver 44 via the transmitter 43, for example. We send by radio such as infrared rays.

On the receiver 44 side, this detection signal is sent to a control unit (not shown), whereby the drive motor M shown in FIG. 1 is stopped or inverted, and the lowering of the slat curtain 3 is stopped or inverted. An ascending operation is performed.

It should be noted that the sensing piece 20 is raised when the upper surface of the substrate 21 of the sensing piece 20 is provided on each of the steps 16 and 1 provided on the frame 10.
6 is restricted to a predetermined distance in contact with the lowermost end portions 16a, 16a of the microswitch 41, so that the actuator 42 of the microswitch 41 is not damaged.

When the slat curtain 3 rises and the sensing piece 20 separates from the obstacle B, the sensing piece 20 returns to its initial state by its own weight, and a compression spring (not shown) built in the actuator 42 of the microswitch 41. The operating piece 30 also returns to the initial state due to the minute return force and the own weight.

By the way, as shown in FIG. 4, when the slat curtain 3 is lowered, if the obstacle B is biased to a position before or after the slat curtain 3 (to the right in the figure), the sensing piece 20 The obstacle B abuts on one edge of the substrate 21, but as shown in FIG. 4, the hook-like tip of the ridge 22 on the other edge opposite to the one edge abutting the obstacle B. 23 and the inner surface of the supporting strip 15 as a fulcrum O1
Ascend to rise as to rotate. Then, the tip of the protruding piece 25 of the sensing piece 20 comes into contact with the contact surface 37a of the inclined plate 37 constituting the rocking body 38 of the operating piece 30, and
The wing plate 31 of the operating piece 30 is swung upward about the hook piece 33.

As a result, the operating piece 30 is swung, and the micro switch 41 detects this, and stops the lowering of the slat curtain 3 or reverses the upper side.

Further, when the slat curtain 3 descends, as shown in FIG.
When the sensing piece 20 is biased to the rear or front position (to the left in the drawing) with respect to the obstacle B, the obstacle B contacts the other edge of the substrate 21. However, as shown in FIG. Ascending ascending so as to rotate using the hook-shaped tip 23 of the protruding ridge 22 and the inner side surface of the supporting strip 15 as the fulcrum O2 on the one edge side opposite to the other edge abutting on B. The upper surface of the parallel piece 24 of the sensing piece 20 contacts the bottom surface 36 a of the bottom plate 36 that constitutes the rocking body 38 of the operating piece 30, and the operating piece 30
Swings upward about the hook piece 33.

As a result, the operating piece 30 is swung, and the micro switch 41 detects this, and stops the lowering of the slat curtain 3 or reverses it.

Therefore, in the obstacle sensing device 1 of the opening / closing body 3 of the first embodiment configured as described above, it comes into contact with the obstacle B,
The ascending sensing piece 20 is provided so as to form the bottom surface of the frame 10 so as to cover the groove opening 14 of the frame 10, and at least a part of the sensing piece 20 ascends even if the sensing piece 20 is in a straight or oblique direction. However, since the operating piece 30 can be raised with this, the electric shutter S moves on the trajectory of the slat curtain 3, that is, the building opening 2.
Can be reliably detected without creating a blind spot with respect to an obstacle B at the bottom of the vehicle.

Further, the operating piece 30 swingably disposed in the frame body 10 is supported in a suspended state in the frame body 10,
Since the engagement is performed by the approximate line contact, the operation piece 30 swings lightly and the slat curtain 3 of the electric shutter S is moved.
, The obstacle B below the building opening 2 can be sensed with high accuracy.

Further, a pendulum plate 32 having a weight piece 34 is provided on the operating piece 30 to reduce the load relating to the swing of the operating piece 30 and to assist the swing to reduce the swing of the operating piece 30. By making it lighter, the obstacle B at the lower part of the building opening 2 can be obtained even if the pushing force of the sensing piece 20 is small
Can be detected with higher accuracy.

Further, according to the obstacle sensing device 1, since the sensing piece 20 for sensing the obstacle B is suspended from the frame 10 and is not in a cantilever configuration as in the related art, the sensing is performed. Since the pieces are in a horizontal state, even if the slat curtain 3 is raised and stored, and the lowermost end is positioned in the lintel, the appearance is good and the design as the shutter device S is good. Is improved.

The obstacle sensing device 1 has a parallel piece 24 and a projecting piece 25 provided for pushing up the operating piece 30 in a structure in which the operating piece 30 is raised and swung as the sensing piece 20 is raised. Are provided in the width direction with respect to the oscillating body 38 of the operating piece 30, so that the sensing piece 2
When 0 is biased upward in the width direction, the operating piece 30 can be swung smoothly and reliably in response to the movement of the sensing piece 20.

The obstacle sensing device 1 according to the first embodiment described above.
In the above, the shape of the weight piece 34 was formed to extend downward, but as shown in FIG.
The oscillating body 38 may be formed in a continuous plate shape from the upper end of the inclined plate 37. As in the first embodiment described above, the load relating to the oscillating movement of the operating piece 30 is reduced, and the oscillating movement of the operating piece 30 is reduced. It is possible to lighten the obstacle B at a lower part of the building opening 2 with high accuracy.

According to the continuous plate-shaped weight piece 34,
Since the operating piece 30 is formed in the shape of a hollow rectangular pipe in which the wing plate 31, the vertical plate 35, the bottom plate 36, the inclined plate 37, the weight piece 34 and the pendulum plate 32 are continuous, the operating piece 30 has a width of the building opening 2 ( Even if the operating piece 30 is disposed throughout the longitudinal direction, which is the left-right direction, there is no fear of twisting or bending of the operating piece 30, and the operating piece 30 is transmitted to the micro switch 41 without being delayed. Therefore, it is possible to obtain highly accurate obstacle detection.

The shape of the weight piece 34 is not limited to the shape described in the above-described embodiment, and is not particularly limited as long as the above-described effects can be obtained.

Next, a description will be given of a second embodiment of the obstacle detecting device for an opening / closing body according to the present invention. FIG. 7 is a side sectional view showing a second embodiment of the obstacle sensing device of the present invention. In the second embodiment described below, the same or equivalent parts as those in the above-described first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

An obstacle sensing device 1 according to the second embodiment
As in the first embodiment, is roughly composed of a frame 10, a sensing piece 20, an operating piece 50, and a detecting means 40.

First, on the inner surface of one side plate 13 (the right side in FIG. 7) of the frame 10, a substantially L-shaped cross section is formed so as to extend inward of the frame 10 from above the step 16. The receiving piece 18 is formed integrally. The tip 18b of the receiving piece 18 is formed so as to face upward, that is, is formed substantially perpendicularly so as to be inward from the groove opening 14. On the lower surface of the upper plate 12 of the frame 10, a restricting piece 12a is formed to protrude substantially in the center in a hanging direction.

Next, the operating piece 50, like the frame 10 and the sensing piece 20, is provided so as to extend completely in the longitudinal direction which is the width (left and right) direction of the building opening 2, as shown in FIG. ,
A support body 52 having a hollow pipe shape in cross section and a flat wing body 51
And an oscillating body 58 formed together with the wing body 51 and a weight piece 54.

In the present embodiment, the support member 52 is formed in a hollow pipe shape having a substantially circular cross section, and a concave groove-shaped locking portion 53 is formed on the outer bottom surface at the lower end. 1
8 from above. In the engagement state with the receiving piece 18, the support body 52 is surrounded by the lower surface of the upper plate 12 of the frame body 10 and the restriction piece 12a.
It does not fall off easily.

Next, as shown in FIG. 7, one side edge of the wing body 51 is a part of the outer surface of the support body 52 (left side in FIG. 7).
It is provided integrally with. In addition, the rocking body 58
On the lower surface of the wing plate 51, a vertical plate 55 extending vertically downward with respect to the plate surface of the wing plate 51, and formed at a lower end of the vertical plate 55 through a curved portion so as to be substantially parallel to the wing plate 51. A bottom plate 56 whose bottom surface is a bottom surface 56a;
6, a curved plate 57 continuously formed with a curved surface from the edge of the support member 52, the outer surface of which is an abutting surface 57a, and a tip end portion of which is formed continuously below the support 52.
At the same time, it is formed in a pipe shape having a hollow cross section.

Further, the weight piece 54 is provided so as to project inward on the inner surface side portion (right side in the figure) on the opposite side of the support body 52 facing the wing body 51. The weight piece 54 is set to have a weight smaller than that of the oscillating body 58. As shown in FIG. 7, the weight piece 54 swings in the frame body 10 with the operating piece 50 itself engaged with the receiving piece 18. The moving body 58 is below the horizontal, the bottom surface 56a of the bottom plate 56 contacts the upper surface of the parallel piece 24 of the sensing piece 20, and the contact surface 57a of the curved plate 57 contacts the tip of the projecting piece 25 of the sensing piece 20. I have come into contact with them.

The operating piece 50 is connected to the tip 1 of the receiving piece 18.
The engagement portion 53 of the support 52 is engaged with the engagement portion 8a in a line contact manner, so that the engagement portion 53 of the support 52 can swing freely in the frame 10 around the engagement portion 53 of the support 52 on the receiving end 18a. It is attached to become.

The operating piece 50 is connected to the sensing piece 2.
0 enters the frame 10, that is, when the sensing piece 20 is raised as shown in FIG.
As a result, the rocking body 58 side is pushed up, and is rocked in the depth direction (upward direction) of the frame body 10 around the locking portion 53.

Hereinafter, the operation of the obstacle sensing device 1 according to the second embodiment having the above configuration will be described. First, when the slat curtain 3 descends by the closing operation, if there is an obstacle B below the slat curtain 3, the substrate of the sensing piece contacts the obstacle B. As shown in FIG. 8, the sensing piece 20 is lifted by the obstacle B, and the parallel piece 24 and the protruding piece 25 of the sensing piece 20 are connected to the bottom surface 56a and the contact surface 57a of the rocking body 58.
The operating piece 50 is swung upward about the locking portion 53 of the support 52 by contact with the supporting member 52. At this time, when the operating piece 50 swings, the weight of the swinging body 58 alone does not increase due to the weight of the weight piece 54 provided on the support body 52, and the load on the swinging movement of the operating piece 50, Is reduced, the swing in the ascending direction is assisted, and the operating piece 50 is swung with a small load.

Then, the wing plate 51 of the operating piece 50 pushes the actuator 42 of the micro switch 41 upward, whereby the micro switch 41 outputs a detection signal, and the transmitter 43 is turned on similarly to the first embodiment. This signal is sent wirelessly to the receiver 44 via the receiver.

On the receiver 44 side, this detection signal is sent to a control unit (not shown), whereby the drive motor M shown in FIG. 1 is stopped or inverted, and the lowering of the slat curtain 3 is stopped or inverted. An ascending operation is performed.

It should be noted that the sensing piece 20 is raised when the upper surface of the substrate 21 of the sensing piece 20 is provided on each of the steps 16, 1 provided on the frame 10.
6 is restricted to a predetermined distance in contact with the lowermost end of the microswitch 6, so that the actuator 42 of the microswitch 41 is not damaged.

When the slat curtain 3 rises and the sensing piece 20 separates from the obstacle B, the sensing piece 20 returns to its initial state by its own weight and a compression spring (not shown) built in the actuator 42 of the microswitch 41. The operating piece 50 also returns to the initial state due to the minute return force and the own weight.

By the way, as shown in FIG. 9, when the slat curtain 3 is lowered, if the obstacle B is biased to a position before or after the slat curtain 3 (rightward in the figure), the sensing piece 20 The obstacle B abuts on one edge of the substrate 21, but as shown in FIG. 9, the hook-like tip of the ridge 22 on the other edge opposite to the one edge abutting on the obstacle B 23 and the inner surface of the supporting strip 15 as a fulcrum O3
Ascend to rise as to rotate. The tip of the protruding piece 25 of the sensing piece 20 contacts the slope 57 a of the curved plate 57 that constitutes the rocking body 58 of the operating piece 50, and the wing plate 51 of the operating piece 50 is moved upward around the locking portion 53. Rock it.

As a result, the operating piece 50 is swung, and the micro switch 41 detects this, and stops the lowering of the slat curtain 3 or reverses and raises it.

When the slat curtain 3 is lowered, as shown in FIG. 10, if the obstacle B is biased to the rear or front position (leftward in the figure) with respect to the slat curtain 3, the sensing piece 20 The obstacle B abuts on the other edge of the substrate 21, but as shown in FIG. 10, the hook-like tip of the ridge 22 on one edge side opposite to the other edge on which the obstacle B abuts. The ascending ascending is performed so as to rotate around the inner surface of the support strip 15 and the support strip 15 as a fulcrum O4. And the sensing piece 20
The upper surface of the parallel piece 24 abuts on the bottom surface 56a of the bottom plate 56 constituting the rocking body 58 of the operating piece 50, and the operating piece 5
The zero wing plate 51 is swung upward about the locking portion 53.

As a result, the operating piece 50 is swung, and the micro switch 41 detects this, and stops the lowering of the slat curtain 3 or reverses it.

Therefore, in the obstacle detecting device 1 for the opening / closing body 3 of the second embodiment constructed as described above, similarly to the above-described first embodiment, the sensing piece 2 which comes into contact with the obstacle B and rises.
0 is provided so as to cover the groove opening 14 of the frame body 10 so as to constitute the bottom surface of the frame body 10, and at least a part of the sensing piece 20 rises even if the sensing piece 20 is in a straight or oblique direction,
Since it is possible to raise the operating piece 50 accordingly, it is possible to make a blind spot with respect to the obstacle B on the moving track of the slat curtain 3 of the electric shutter S, that is, under the building opening 2. It can be detected without fail.

Further, since the operating piece 50 slidably disposed in the frame 10 is engaged with the frame 10 by substantially line contact, the operating piece 50 swings lightly. Therefore, the electric shutter S can detect the obstacle B on the moving trajectory of the slat curtain 3, that is, the lower part of the building opening 2 with high accuracy.

Further, a weight piece 54 is provided on the support body 52 of the operating piece 50 to reduce the load related to the swing of the operating piece 50 and to assist this swing, so that the swinging of the operating piece 50 is made lighter. With this configuration, even if the pushing force of the sensing piece 20 is small, it is possible to sense the obstacle B located under the building opening 2 with higher accuracy. The shape of the weight piece 54 is not limited to the shape described in the second embodiment, and is not particularly limited as long as the above-described effect can be obtained.

Further, according to the obstacle sensing device 1, the sensing piece 20 for sensing the obstacle B is suspended from the frame 10 and is not of a cantilevered structure as in the prior art. Since the piece 20 is in a horizontal state, even if the slat curtain 3 is raised to be in the housed state and the lowermost end is in the lintel, the appearance is good and the design as the shutter device S is good. The performance is improved.

In the obstacle sensing device 1, the parallel piece 24 and the projecting piece 25 provided to push up the actuating piece 50 in the structure in which the actuating piece 50 is raised and rocked as the sensing piece 20 is raised. By providing the operating piece 50 in the width direction with respect to the rocking body 58, the sensing piece 2
For example, when the value of 0 is biased in the width direction, the operating piece 50 can be swung smoothly and reliably in response to the movement of the sensing piece 20.

Further, since the operating piece 50 is formed in the frame body 10 by the rocking body 58 and the support body 52 each having a hollow cross-section, the operating piece 50 has a shape similar to that of the building opening 2. Even if the operating piece 50 is arranged throughout the longitudinal direction which is the width (left and right) direction, the operating piece 50 is not twisted or bent, and the rising of the operating piece 50 is transmitted to the micro switch 41 without delay. Therefore, highly accurate obstacle detection can be maintained for a long period of time.

In the above-described second embodiment, the support 52 of the operating piece 50 interposed between the microswitch (detecting means) 41 (40) and the sensing piece 20 is formed in a circular pipe shape having a substantially circular cross section. As described above, the support 52
A groove 53 is formed at the lower end of the support member 52, and the support member 52 is not limited to this shape as long as the support member 52 does not cause twisting or the like. Is also good.

11 and 12 in the sensing piece 20 described in the first and second embodiments.
As shown in the figure, the parallel piece 24 is not formed in a connecting shape extending over the tips of the ridges 22, 22, but is made parallel to the substrate 21 from the tip of one of the ridges 22 (the left side in FIGS. It is formed so as to extend in the opposite direction (inward direction) from the tip 23 and further project
5 on the other end (right side in the figure) of the protrusion 22 and a hook-shaped tip 23
It may be formed to extend in the opposite direction (inward) upward, and the same effect as in the above-described embodiments can be obtained in this configuration.

Further, in each of the above-mentioned embodiments, the upright pieces 26, 26 provided on the substrate 21 of the sensing piece 20 are the frame members 1.
As a result, the frame 10 closes the side of the groove opening 14 so that dust and water droplets enter the groove opening 14 by extending into the narrow grooves 17 provided in the respective side plates 13. Can be prevented.

Further, in each of the above-described embodiments, when the operating piece 30 (50) and the sensing piece 20 return to the initial state after the detection of the micro switch 41, the micro switch 41
Each of the actuators 42 returns to the initial position due to the minute return force of the actuator 42 and the weight of each part. However, each or any one of the actuators 42 is provided with an urging means for forcibly returning to the original position. A configuration may be provided. In this case, the biasing means is constituted by a compression coil spring, a tension coil spring, a torsion coil spring, a plate spring, or the like, and has one end fixed to the frame and the other end connected to a member that returns.

[0082]

As described above, in the obstacle sensing device for an openable and closable body according to the present invention, one side surface of the frame body is moved so that the sensing piece that moves in contact with the obstacle covers the groove opening of the frame body. Since it is provided so as to be configured and can enter the frame even when the sensing piece is in a straight or oblique direction, it is on the movement trajectory of the opening / closing body, that is, the edge of the frame and the opening of the building. There is an effect that it is possible to reliably detect obstacles between the head and the obstacle without forming a blind spot.

Also, since the operating piece, which is swingably disposed in the frame, is engaged in line contact in the frame,
The swing of the operating piece is performed lightly, and it is possible to detect with high accuracy an obstacle on the movement trajectory of the slat curtain of the electric shutter, that is, the lower part of the building opening.

Further, by providing the operating piece with the weight piece, the load relating to the swinging of the operating piece can be reduced, the swinging of the operating piece can be made lighter, and the swinging of the operating piece can be assisted. Since it has a function, even if the pushing force on the sensing piece is small, it is possible to easily and reliably swing the operating piece, so that it is possible to detect obstacles below the building opening with higher accuracy. it can.

Further, according to the obstacle sensing device, when the electric shutter is configured, the sensing piece for sensing the obstacle is suspended from the frame, and is not provided in the conventional cantilever configuration. Since the sensing piece is horizontal, the slat curtain is raised and retracted, and the lower end is positioned between the lintels on the ceiling side. There is an effect that is improved.

[Brief description of drawings]

FIG. 1 is a schematic front view of a shutter provided with an obstacle detection device for an opening / closing body according to the present invention.

FIG. 2 is a side sectional view showing a first embodiment of an opening / closing body obstacle sensing device according to the present invention;

FIG. 3 is a side sectional view showing an obstacle sensing state of the obstacle sensing device according to the first embodiment;

FIG. 4 is a side sectional view showing an obstacle sensing state of the obstacle sensing device according to the first embodiment.

FIG. 5 is a side sectional view showing an obstacle sensing state of the obstacle sensing device according to the first embodiment;

FIG. 6 is a side sectional view showing another embodiment of the opening / closing body obstacle sensing device according to the first embodiment.

FIG. 7 is a side sectional view showing a second embodiment of an obstacle detection device for an opening / closing body according to the present invention.

FIG. 8 is a side sectional view showing an obstacle sensing state of the obstacle sensing device according to the second embodiment.

FIG. 9 is a side sectional view showing an obstacle sensing state of the obstacle sensing device according to the second embodiment.

FIG. 10 is a side sectional view showing an obstacle sensing state of the obstacle sensing device according to the second embodiment.

FIG. 11 is a side sectional view showing another embodiment of the opening / closing body obstacle sensing device according to the first embodiment.

FIG. 12 is a side sectional view showing another embodiment of the opening / closing body obstacle sensing device according to the second embodiment.

FIG. 13 is a side sectional view of a conventional obstacle sensing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Obstacle sensing device 2 ... Building opening 2a ... Edge (lower edge) 3 ... Opening / closing body (slat curtain) 10 ... Frame 14 ... Groove opening 15 ... Support strip 18 ... Receiving piece 20 ... Sensing piece 21 ... Substrate 22 ... Protrusion 23 ... Tip (hook-shaped tip) 24 ... Parallel piece 25 ... Protrusion piece 30 ... Operating piece 31 ... Wing plate 33 ... Hook piece 34 ... Weight piece 36a ... Bottom face 37a ... Contact surface 40 ... Detection means 50 ... Actuating piece 52. Support 53. Locking part 54. Weight piece 56a. Bottom face 57a.

Claims (2)

[Claims] 1. A groove opening is provided on an end face of an opening / closing body disposed in a building opening and facing the edge of the building opening in the longitudinal direction which is the width direction of the building opening. A frame, a receiving piece protruding from an inner surface of the frame, a pair of support strips provided at opposite edges of a groove opening of the frame, and reducing an opening width of the groove opening; It has a substrate for closing the groove opening of the body, and a pair of ridges having a hook-shaped tip is provided on one surface of the substrate so as to be able to freely enter and exit the groove opening. While being supported by each of the support strips, each of the pair of ridges has a protrusion extending between the front ends thereof and extending parallel to the substrate and extending inward of the groove opening of the frame. A sensing piece on which each piece is formed; a bottom surface in contact with the parallel piece of the sensing piece; One side edge of the vane having an inclined abutting surface,
A hook piece engaged with the receiving piece in a suspended state is protruded from the receiving piece, and the hook piece is disposed so as to be swingable in the frame. The hook piece is opposite to the wing plate with respect to the hook piece. A weight piece extending in the direction, and when the sensing piece enters the frame, an operating piece that swings in the depth direction of the frame via the parallel piece and / or the protrusion. A detecting means provided on the frame, for detecting the swing of the operating piece when the sensing piece enters the frame, an obstacle sensing device for the opening / closing body. 2. A groove opening, which serves as a moving end of an opening / closing body disposed at a building opening and is provided on an end face facing an edge of the building opening so as to extend completely in a longitudinal direction which is a width direction of the building opening. A frame, a receiving piece protruding from an inner surface of the frame and extending inward from a groove opening of the frame; an opening provided at an opposite edge of the groove opening of the frame; A pair of supporting strips for narrowing the width, a substrate for closing the groove opening of the frame body, and a pair of ridges having a hook-shaped tip protruding from one surface of the substrate. The support strips are supported by the support strips so as to be able to freely enter and exit the groove openings, and the front ends of the pair of ridges are located between the front ends and are parallel to the substrate and the frame. A sensing piece formed with a protruding piece extending inward of the groove opening of the body; One side edge of the wing plate having a bottom surface and a contact surface that comes into contact with the protruding piece of the sensing piece is integrally provided on a part of the outer surface of the hollow pipe-shaped support, and A concave groove-shaped engaging portion that engages with the receiving piece is formed on the bottom surface, the engaging portion is disposed so as to be swingable in the frame, and the wing plate of the support is A weight piece protrudes from the hollow inner surface opposite to the side surface provided, and when the sensing piece enters the frame, a depth direction of the frame through the parallel piece and / or the protrusion. Opening and closing, comprising: an operating piece that swings in a direction; and a detection unit that is provided on the frame, and that detects a swing of the operating piece when the sensing piece enters the frame. Body obstacle sensing device.