JPH0828165A - Obstacle sensitive device of opening and closing body - Google Patents

Abstract

PURPOSE:To carry out certain sensing by sensing oscillation by a detection body as well as holding a sensitive piece in a groove in the longitudinal direction of a lower end edge of an opening and closing body and oscillating a working piece provided in the groove by upward movement of a projected piece erected on the sensitive piece. CONSTITUTION:A sensitive piece 8 enters the inside of a frame body 4 and a projected piece 11 oscillates a working piece 12 in the depth direction of the frame body 4 in the case when there is an obstacle at the time when an opening and closing body 3 is closed. Thereafter, a sensing means 21 detects oscillation of the working piece 12 and stops or reverses movement of the opening and closing body 3 by its signal. In the case when the obstacle is at a position biased against the thickness direction of the frame body 4, the sensitive piece 8 rises with one of projected wires 10 diagonally with a support wire piece 6 as its fulcrum. Simultaneously when the projected piece 11 oscillates around this fulcrum as its center and makes contact with one of blade wires 15, it slides and makes contact on and with the working piece 12 and oscillates it upward. Additionally, a rotor 16 is revolved, and this revolution is sensed by the sensing means 21. Consequently, it is possible to sense without the dead angle and to improve a designing property at the time of storing the opening and closing body as the sensitive piece 8 is not of an overhungtype.

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 with a substantially U-shaped cross section whose bottom surface is opened in the seat plate part which is the 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.

Therefore, as shown in FIG. 8, a decorative cover 52 having an open bottom surface is provided on the lowermost seat plate portion of the slat curtain 51, and one edge is pivotally connected to one side edge of the opening of the decorative cover 52. A cantilever-shaped movable bottom plate 53 which is attached and the other edge of which is a swing end, and a hollow round pipe which is disposed inside the decorative cover 52 and has an operation piece 54 protruding from a part of the outer peripheral surface. An obstacle sensing device has been devised which includes a rotating body 55 having a shape and a microswitch 56 which comes into contact with an operation piece 54 of the rotating body 55.

According to the obstacle sensing device 50, when the slat curtain 51 contacts the obstacle B during the closing operation,
The movable bottom plate 53 pivots about the pivotal portion to swing the swinging end upward, and at the same time, the operating piece 54 of the rotating body 55 is rotationally moved in the upward direction.
By pressing the actuator of No. 6, it is detected.

[0007] The sensing signal is sent to the shutter control unit via the transceiver, and is transmitted to the slat curtain 51.
Is stopped, or the drive motor is rotated in the reverse direction to rise again.

[0008]

However, in the above-mentioned conventional obstacle sensing device for a shutter, the movable bottom plate 53 for sensing the presence or absence of an obstacle has a structure in which one edge is pivotally attached in a cantilever manner. Therefore, when the obstacle B comes into contact with the other edge that is the swinging end that is not pivotally supported, the movable bottom plate 53 moves up and can detect the obstacle B, but is pivotally supported. When the obstacle B comes into contact with one edge, the movable bottom plate 53 does not move up, so that the obstacle B cannot be sensed and there is a problem that a blind spot occurs.

In this conventional obstacle sensing device, when the slat curtains are all raised and fully opened,
The movable bottom plate 53, which is the lowermost end of the slat curtain 51,
The movable bottom plate 53 is stopped between the lintels constituting the upper edge of the opening of the building, but since the movable bottom plate 53 is cantilevered to the decorative cover 52, the movable bottom plate 53 is exposed in an inclined state. This has the disadvantage that the appearance is poor in design.

[0010] In order to solve the above-mentioned problems, the present invention provides an obstruction of an opening / closing body which can reliably detect an obstruction at the time of closing operation of the opening / closing body such as a shutter. It is intended to provide a sensing device.

[0011]

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 4 provided with a groove opening 5 throughout the longitudinal direction which is the width direction of the frame body 4, and a pair of frame bodies 4 provided at the opposite edges of the groove opening 5 to narrow the opening width of the groove opening 5. Support strip 6
And a pair of ridges formed in a hook shape on one surface of the substrate 9, the leading ends 10 a of which are supported by the support strips 6. 10 are protruded,
A sensing piece 8 which is provided so as to be able to move in and out of the groove opening 5, and a projecting piece 11 extending inward of the frame 4 is formed at an intermediate position between the pair of projecting lines 10.
On the plate surface 12d facing the groove opening 5, a pair of blades 15 which come into contact with the projecting piece 11 of the sensing piece 8 have a predetermined angle with respect to the plate surface 12d, and the tip 11a of the projecting piece 11 is formed. The inner side surface 4 of the frame 4 while extending so as to cover
The support edge 12c is pivotally attached to b, and when the sensing piece 8 enters the frame body 4, the frame body 4 is inserted through the projecting piece 11.
An operating piece 12 swinging in the depth direction of the frame, and a detecting means 21 provided on the frame 4 for detecting the swing of the operating piece 12 when the sensing piece 8 enters the frame 4, It is characterized by having.

The obstacle detection device 1 for an opening / closing body according to the present invention serves as a moving end of the opening / closing body 3 arranged in the building opening 2, and the building is provided on the end face facing the edge 2a of the building opening 2. The groove opening 5 is entirely passed through in the longitudinal direction which is the width direction of the opening 2.
And a pair of support strips 6 provided at opposite edges of the groove opening 5 of the frame 4 to reduce the opening width of the groove opening 5, and a groove opening 5 of the frame 4 Substrate 9 for closing
A pair of protrusions 10 each having a hook shape, the tip 10a of which is supported by each of the support strips 6 is provided on one surface of the substrate 9 so as to freely move in and out of the groove opening 5. A sensing piece 8 provided at the intermediate position of the pair of projections 10 and extending inward of the frame 4 and a plate surface 12d facing the groove opening 5. , A pair of blades 15 that come into contact with the projection 11 of the sensing piece 8 extend at a predetermined angle with respect to the plate surface 12d so as to cover the tip 11a of the projection 11, and A support edge 12c is pivotally attached to the inner side surface 4b of the frame body 4, and when the sensing piece 8 enters the frame body 4, it swings in the depth direction of the frame body 4 via the projecting piece 11. The actuating piece 12 and the actuating piece 8 are arranged in parallel with each other and are arranged in the frame body 4. A detecting member 21 provided on the frame 4 for detecting rotation of the rotating member 16 via the operating piece 12 when the sensing piece 8 enters the frame 4; It is characterized by having.

The pair of supporting strips 6 are respectively provided via a step portion 7 extending outward with respect to the groove opening 5 of the frame body 4, and each blade strip 15 is provided with the operating strip. 12
At the position where is detected by the detecting means 21, the substrate 9 of the sensing piece 8 is rotated in contact with the outer corner 7a of the step 7 so that the tip 11a of the protruding piece of the sensing piece 8 The tip 11 when pivoted about the outer corner 7a of the portion 7
The structure may be formed in an arc shape along the movement trajectory drawn by a.

[0014]

When there is an obstacle B on the movement trajectory of the opening / closing body 3 when the opening / closing body 3 is closed, the sensing piece 8 provided on the frame 4 via the protruding ridges 10 The sensing piece 8 enters the frame 4 by the obstacle B, and the protruding piece 11 extended from the sensing piece 8 causes the operating piece 12 to swing in the depth direction of the frame 4. The detection means 21 detects the swing of the actuating piece 12, and stops or reverses the movement of the opening / closing body 3 by this detection signal.

When the opening / closing member 3 is closed and the obstacle B is located at a position deviated from the thickness direction of the frame 4, the sensing piece 8 is placed on the edge 9 a of the substrate 9. The object B contacts, but one ridge 10 and the inner surface 6 of the support strip 6 on the edge 9a side opposite to the edge 9a with which the obstacle B contacts.
Ascending with a as a fulcrum O, the projecting piece 11 of the sensing piece 8 swings in the frame 4 about the fulcrum O, and the tip 11a moves in an arc. The tip 11a of the projecting piece 11 abuts on one of the blade strips 15 near the fulcrum O of the actuating piece 12, and the curved lower surface of the blade strip 15 is slidably contacted by the tip 11a of the projecting strip 11 to form a blade strip. The actuating piece 12 is swung upward through 15.

As a result, similarly to the above, this operating piece 12
Is detected by the detecting means 21, and the movement of the opening / closing body 3 is stopped or reversed.

In the case of the structure in which the rotating body 16 is interposed between the operating piece 12 and the detecting means 21, the rotating body 16 is rotated by the swing of the operating piece 12, and this rotation is detected by the detecting means. 21
Is detected, and the movement of the opening / closing body 3 is stopped or driven in reverse.

Thus, even when the sensing piece 8 comes into contact with the obstacle B in a straight or oblique direction, the sensing piece 8 can enter the frame 4 and
Since the protruding piece 11 of the sensing piece 8 swings the operating piece 12 through the wings 15, an obstacle on the moving path of the opening / closing body 3, that is, between the frame 4 and the edge 2 a of the building opening 2. The object B can be reliably detected without forming a blind spot.

[0019]

1 is a schematic front view of a shutter provided with an obstacle detecting device for an opening / closing body according to the present invention, and FIG. 2 is a side sectional view showing an embodiment of an obstacle detecting device for an opening / closing body. First, as shown in FIG. 1, the obstacle sensing device 1 of the opening / closing body is provided at an electric shutter S disposed at an opening 2 of a building. The electric shutter S is a lightweight shutter composed of a slat curtain 3 as an opening / closing body, a panel shutter (not shown) composed of a panel plate as an opening / closing body, or the like. The obstruction sensing device 1 of the present invention is provided at a certain drainage portion. The obstacle sensing device 1 includes a frame 4
, The sensing piece 8, the operating piece 12, the rotating body 16, and the detecting means 21.

First, the frame 4 is the moving end at the lowermost end of the slat curtain 3, and the width (width) of the building opening 2 is set at the lower edge 2a of the building opening 2, that is, at the lower end surface facing the floor surface. As shown in FIG. 2, the groove opening 5 is formed in a substantially U shape so as to extend entirely in the longitudinal direction which is the (left and right) direction.

In the groove opening 5 of the frame body 4, a pair of supporting strips 6, 6 for narrowing the opening width of the groove opening 5 are formed integrally with the frame body 4 at opposite edges. .

As shown in FIG. 2, the pair of support strips 6 and 6 have a substantially L-shaped step extending outwardly with respect to the groove opening 5 of the frame 4 and, in this embodiment, downward. Each is provided via a unit 7.

Further, the sensing piece 8 is shown in FIG. 2 on one surface which is an upper surface of a long flat plate-like substrate 9 which is capable of closing the groove opening 5 of the frame body 4 along the frame body 4. As described above, the pair of ridges 10, 10 whose tips are formed in a substantially hook shape and whose hook-shaped tips 10a face outwardly are parallel to each other and are provided perpendicularly to the one surface. A projecting piece 11 extending in the same direction as the ridges 10 is provided integrally with the substrate 9 at an intermediate position equidistant from the pair of ridges 10.

The sensing piece 8 includes a pair of ridges 10
Is attached to the frame body 4 so as to be in a suspended state by being supported by each of the support strips 6, and can be moved in and out of the groove opening 5 of the frame body 4, that is, vertically movable. In this attached state, the projecting piece extends inward of the frame body. The tip 11a of the protruding piece 11 of the sensing piece 8 is formed in a substantially T-shaped cross section as shown in FIG.

Next, the operating piece 12 is, as shown in FIG.
It is formed in a substantially Z-shaped cross section composed of a flat base portion 12a and a contact portion 12b that is bent in the middle, and, like the sensing piece 8, is long and fully penetrates in the width direction of the slat curtain 3. An engaging portion 13 is formed on a supporting edge 12c which is one edge portion of the plate material, and an inner side surface 4b of one vertical side plate 4a of the frame body 4 is formed.
And is pivotally mounted in the frame 4 around the pivoted portion.

A base 12a of the operating piece 12 has a pair of blades extending at a predetermined angle with respect to a plate surface 12d which is a lower surface facing the groove opening 5 of the frame 4 at a predetermined angle with respect to the plate surface 12d. Articles 15 and 15 are provided.

As shown in FIG. 2, the blades 15 extend in the frame 4 so as to cover the tip 11a of the protruding piece 11 of the sensing piece 8 from above. At a position where the operating piece 12 is detected by the detecting means described later, that is, as shown in FIGS. 3A and 3B, the substrate 9 of the sensing piece 8 is When rotating around the outer corner 7a of the frame 4 in contact with the outer corner 7a of each step 7, the tip 11a of the protruding piece 11 follows the arc-shaped movement locus drawn by the tip 11a. It is formed to be curved.

The operating piece 12 is connected to the sensing piece 8.
Enters the frame 4, that is, rises,
1 pushes up together with the wings 15 and swings in the depth direction of the frame 4.

Next, as shown in FIG.
It is formed in a hollow round pipe shape in cross section, and a contact piece 17 is protruded from a part of the outer peripheral surface 16a. As shown in FIG. 2, the contact piece 17 includes a flat blade 18,
The contact plate 19 is formed on the lower surface of the blade plate 18 and extends downward and is curved in the middle.

The rotating body 16 is the same as the operating piece 1 described above.
2 is pivotally mounted on a curved concave groove-shaped receiving plate 20 provided above the mounting groove 14 on the inside 4b of the frame body to which the pivot piece 2 is pivotally mounted. Piece 1
2 a contact portion 12b at the tip and a contact plate 19 of the rotating body 16
Are always in contact with each other.

Next, the detecting means comprises a microswitch 21 having an actuator 22 arranged on the lower surface thereof, as shown in FIG.
As shown in FIG.
The two ends are attached so as to extend into the frame 4.

The tip of the actuator 22 of the microswitch 21 is positioned inside the frame 4 so as to be in contact with the upper surface of the blade 18 of the rotating body 16 described above, and the blade 18 rotates the rotating body 16. This is detected by swinging upward in the elevation direction due to movement, and this micro switch 21
Is connected to the transmitter 23 to transmit a sensing signal.

The microswitch 21 and the transmitter 23 connected to the microswitch 21 are formed substantially integrally, and as shown in FIG. 1, only one location is provided near one end of the frame 4 in the longitudinal direction. Also, a receiver 24 corresponding to the transmitter 23 is provided on the bottom surface of the storage portion 25 of the slat curtain 3 disposed on the upper edge of the building opening 2 and controls the elevation of the slat curtain 3. (Not shown).

Next, the operation of the obstacle sensing device 1 according to the present embodiment having the above configuration will be described. First, when the slat curtain 3 descends due to the closing operation, if there is an obstacle B below the slat curtain 3, the substrate 9 of the sensing piece 8 will cause the obstacle B to fall.
Abut. As shown in FIG. 4, the sensing piece 8 is lifted by the obstacle B, and the projecting piece 11 of the sensing piece 8 is actuated by the operating piece 1.
2 is swung upward. At the same time, the operating piece 12 rotates the rotating body 16 via the contact plate 19.

Then, the wing plate 18 of the rotating body 16 pushes the actuator 22 of the microswitch 21, whereby the microswitch 21 outputs a detection signal, and transmits this signal to the receiver 24 via the transmitter 23, for example. We send by radio such as infrared rays.

On the side of the receiver 24, this detection signal is sent to the control section, whereby the drive motor M is stopped or the reverse drive is performed, and the descent of the slat curtain 3 is stopped or the reverse rise operation is performed. .

The rising of the sensing piece 8 is restricted to a predetermined distance at which the substrate 9 of the sensing piece 8 comes into contact with the support strip 6 of the frame 4.
It does not damage the 2.

When the slat curtain 3 rises and the sensing piece 8 separates from the obstacle B, the sensing piece 8 and the actuating piece 12 return to their initial state by their own weight, and are incorporated in the actuator 22 of the microswitch 21. The rotating body 16 also returns to the initial state due to the small restoring force of the compression spring and its own weight.

When the slat curtain 3 is lowered, as shown in FIGS. 5 and 6, the obstacle B is positioned before or after the slat curtain 3 (right in FIG. 5 or left in FIG. 6). When the sensing piece 8 is biased toward the obstacle 9, the obstacle B contacts the edge 9 a of the substrate 9, but is opposite to the edge 9 a of the obstacle B, as shown in FIG. 5 (FIG. 6). As a fulcrum O, one of the ridges 10 on the side of the edge and the inner side surface 6a of the supporting strip 6 ascend ascending.

Then, the projecting piece 11 of the sensing piece 8 swings around the fulcrum O in the frame body 4 and moves so that the tip end 11a draws an arc. Then, the tip 11a of the projecting piece 11
Is in contact with one of the blades 15 near the fulcrum O of the operating piece 12, and the tip 11 a of the protruding piece 11 makes sliding contact with the curved lower surface of the blade 15, and the blade 15 is supported by the supporting edge 12 c. Swing upward as a fulcrum.

As a result, similarly to the above, this operating piece 12
The rotating body 16 is rotated via the
Detects this and stops the descent of the slat curtain 3,
Alternatively, it is inverted and raised.

Therefore, in the obstacle sensing device 1 of the opening / closing body 3 thus constructed, the sensing piece 8 which comes into contact with the obstacle B and ascends so as to cover the groove opening 5 of the frame body 4 Is provided so as to form the bottom surface of the electric shutter S, and the sensing piece 8 can be lifted even in a straight or oblique direction. It is possible to reliably detect the obstacle B at the bottom of the position without making a blind spot.

In addition, according to the obstacle sensing device 1, the sensing piece 8 for sensing the obstacle B is suspended from the frame 4 and is not of a cantilevered structure as in the prior art. Since the piece 8 is in the horizontal state, even when the slat curtain 3 is raised and is 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.

Further, the obstacle sensing device 1 has a structure in which the sensing piece 8 rises and is sensed by the operating piece 12, and the projecting piece 11 which rises and swings with the movement of the sensing piece 8. It is configured to sense with a pair of blades 15 located so as to cover the tip 11a.
At the position where the operating piece 12 is detected by the microswitch (detecting means) 21, the substrate 9 of the sensing piece 8 is brought into contact with the outer corner portion 7a of each step portion 7 of the frame body 4 and the outer corner portion 7a. When it is rotated around the
Since it is formed in an arc shape along the movement trajectory drawn by a, the operating piece 12 can be swung smoothly and reliably in response to the movement of the sensing piece 8.

Further, since the rotating body 16 is interposed between the operating piece 12 and the micro switch (detection means) 21 in the frame 4, it swings by sensing the obstacle B by the sensing piece 8. The movement of the operation piece 12 can be transmitted to the microswitch 21 without fail, so that the obstacle B can be reliably detected even when the width of the shutter S is increased. In particular, since the rotating body 16 has a round pipe shape, the rotating body 16 is not twisted and can be transmitted to the microswitch 21 without delaying the rising of the operating piece 12, which is an obstacle. The object B can be reliably detected.

In the above-described embodiment, an example has been described in which the rotating body 16 provided between the microswitch (detection means) 21 and the operating piece 12 has a round pipe shape having a circular cross section. The shape is not limited to this as long as the body 16 does not cause twisting or the like, and the cross section may be formed in a polygonal shape. In this case, the rotating body 16 is configured so as to be pivotally supported at both ends so that it can rotate.

Further, in the above-described embodiment, the pivotally connecting portion of the actuating piece 12 with the frame 4 is attached to the mounting groove 14 formed in the frame 4.
Although the example in which the locking portion 13 is attached to the above has been described, a shaft-shaped edge portion having a circular cross section is formed on one edge portion (supporting edge) 12c to be the locking portion 13, and this shaft-shaped edge portion is formed. It may be configured to be fitted in the curved mounting groove 14 so as to be swingable.

Further, in the above-described embodiment, when the rotating body 16, the operating piece 12 and the sensing piece 8 return to the initial state after the detection of the micro switch 21, the small return force of the actuator 22 of the micro switch 21 and each part Are returned to their initial positions by their own weights, but a configuration may be adopted in which each or any one of them is provided with an urging means for forcibly returning to the original position. In this case, the biasing means is constituted by a compression coil spring, a tension coil spring, a torsion coil spring, a leaf spring, or the like, and has one end fixed to the frame body 4 and the other end connected to a member that returns. .

Further, according to the structure in which the biasing means is provided, the obstacle sensing device is not limited to the shutter device S which is closed when the slat curtain 3 descends as in the above embodiment, but also the opening / closing member. Of the electric shutter such as a pull-up shutter device that closes when the slat curtain 3 rises, a horizontal shutter device that moves the slat curtain 3 to the left and right to open and close, and a sliding door type door. The structure B can also be applied, and the obstacle B on the moving path can be sensed during the opening / closing operation of the opening / closing body 3.

Further, in the above-described embodiment, the shape of the pair of blades 15 provided on the operating piece 12 is set so that the operating piece 12 is detected by the detecting means (micro switch) 21. An example was described in which when the outer corner portion 7a of the step portion 7 is rotated, the protrusion tip end 11a is curved along an arcuate locus drawn, but the shape is limited to this shape. Not the tip 11 of the sensing piece 8
It is sufficient that each blade 15 is protruded so as to be inclined at a predetermined angle so as to cover a. In this case, the blade strip 15 is preferably a linear inclined surface substantially along the movement trajectory of the protruding tip 11a when the sensing piece 8 rotates, and the operating piece 12 is moved in accordance with the movement of the sensing piece 8.
There is no limitation on the shape of the blade stripe 15 as long as it can swing.

Further, in the above-mentioned embodiment, the tip 11a of the projecting piece 11 of the sensing piece 8 is formed in a substantially T shape as shown in FIG. In consideration of the state, it may be formed in another shape such as a circular cross section or an inverted U shape, or a member having a small friction coefficient may be provided.

In the above-described embodiment, the rotating body 16 is disposed between the microswitch (detection means) 21 and the operating piece 12.
However, when the opening width (left-right width) of the building opening 2 is set to be short, the influence of the bending of the operating piece 12 is reduced, and therefore, as shown in FIG. 16 may be omitted.

[0053]

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.

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.

Further, the obstacle sensing device has a structure in which the sensing piece enters the frame and the operating piece senses the projecting piece by moving the sensing piece in the depth direction of the frame and swinging. Is sensed by a pair of blades positioned so as to cover the tip of the protruding piece. Particularly, at a position where the operating piece is detected by the detection means, the shape of the pair of blades is When it is rotated around this outer corner in a state where it is in contact with the outer corner of each step of the frame, since it is formed in an arc along the movement locus drawn by the tip of the protruding piece, There is an effect that the operating piece can be swung smoothly and reliably in response to the movement of the sensing piece.

Further, since the rotary member is provided between the actuating piece and the detecting means in the frame, the movement of the actuating piece swinging due to the sensing of the obstacle by the sensing piece can be surely performed to the detecting means. Therefore, even if the width of the opening / closing body is increased, it is possible to reliably detect the obstacle. In particular, when the shape of the rotating body is a round pipe, the rotating body can be transmitted to the detecting means without being twisted and the lifting of the operating piece can be transmitted without delay. There is an effect that it can be performed reliably.

[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 an embodiment of an obstacle sensing device for an opening / closing body according to the present invention.

FIGS. 3 (a) and 3 (b) are diagrams showing a relationship between a projection of an operating piece and a projection of a sensing piece of the obstacle sensing device according to the embodiment.

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

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

FIG. 6 is a side sectional view showing an obstacle sensing state of the obstacle sensing device according to the embodiment;

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

FIG. 8 is a side sectional view of a conventional obstacle sensing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Obstacle detection device 2 ... Building opening 2a ... Edge (lower edge) 3 ... Opening / closing body (slat curtain) 4 ... Frame body 4b ... Inner side surface 5 ... Groove opening 6 ... Support strip 7 ... Step 7a ... Outside corner portion 8 ... Sensing piece 9 ... Substrate 10 ... Projection strip 10a ... Tip 11 ... Projection piece 11a ... Tip 12 ... Operating piece 12c ... Support edge 12d ... Plate surface 15 ... Blade strip 16 ... Rotating body 21 ... Sensing means

Claims (3)

[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 pair of support strips provided at opposite edges of the groove opening of the frame, and narrowing the width of the groove opening; and a substrate closing the groove opening of the frame, A pair of ridges, each having a hook-like shape whose tip is supported by each of the support strips, is provided on one surface of the ridge, and is provided so as to freely enter and exit the groove opening. A sensing piece in which a protruding piece extending inward of the frame is formed at an intermediate position; and a pair of wing strips abutting on the protruding piece of the sensing piece on a plate surface facing the groove opening. While extending so as to cover the tip of the protruding piece at a predetermined angle with respect to the surface, A supporting edge is pivotally attached to a side surface, and when the sensing piece enters the frame body, an operating piece that swings in the depth direction of the frame body via the projecting piece, and is provided in the frame body, An obstacle sensing device for an opening / closing body, comprising: a sensing unit that senses a swing of the actuating piece when the sensing piece enters the frame. 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 pair of support strips provided at opposite edges of the groove opening of the frame, and narrowing the width of the groove opening; and a substrate closing the groove opening of the frame, A pair of ridges, each having a hook-like shape whose tip is supported by each of the support strips, is provided on one surface of the ridge, and is provided so as to freely enter and exit the groove opening. A sensing piece in which a protruding piece extending inward of the frame is formed at an intermediate position; and a pair of wing strips abutting on the protruding piece of the sensing piece on a plate surface facing the groove opening. While extending so as to cover the tip of the protruding piece at a predetermined angle with respect to the surface, A supporting edge is pivotally attached to the side surface, and when the sensing piece enters the frame body, an operating piece that swings in the depth direction of the frame body through the projecting piece, and the operating piece is arranged in parallel, A rotating body that is disposed in the frame body and rotates by transmitting the swing of the operating piece; and a rotating body that is provided in the frame body and that operates when the sensing piece enters the frame body. An obstacle detection device for an opening / closing body, comprising: a detection unit that detects the rotation of a rotating body. 3. The pair of support strips are respectively provided via a step portion that extends outward with respect to the groove opening of the frame body, and in each of the blade strips, the operating strip serves as the detecting means. When the substrate of the sensing piece is rotated while being in contact with the outer corner of the step, and the tip of the protruding piece of the sensing piece is rotated about the outer corner of the step. The obstacle detection device for an opening / closing body according to claim 1 or 2, wherein the obstacle detection device is formed in an arc shape along a movement locus drawn by the tip.