JP4596317B2 - Obstacle detection device - Google Patents

Description

The present invention relates to an obstacle detection device, and more particularly to an obstacle detection device including an upper seat plate and a lower seat plate.

2. Description of the Related Art An obstacle detection device in a shutter device that includes an upper seat plate and a lower seat plate is known (see Patent Document 1). FIG. 6 is a diagram showing such an obstacle detection device, and the seat plate provided at the lower end of the shutter curtain is composed of an upper seat plate 10 and a lower seat plate 11, A swing lever 122 and a micro switch operated by the lever are provided. In the obstacle detection device configured as described above, when the lower seat plate 11 comes into contact with the obstacle when the shutter curtain is lowered, the lower seat plate 11 is suspended from the upper seat plate 10 (the left diagram in FIG. 6). Then, the lower seat plate 11 moves upward relative to the upper seat plate 10 (the middle view in FIG. 6), and in conjunction with this, the swing lever 122 rotates and the micro switch enters to lower the shutter curtain. Stopped.

However, when the shutter curtain descends, if the corner portion of the lower seat plate 11 at the lower end of the shutter curtain comes into contact with an obstacle or comes into contact with an oblique obstacle, the lower seat plate and the upper seat plate are greatly inclined due to interference. Therefore, there is a possibility that an obstacle cannot be detected without the swing lever 122 rotating.

Japanese Patent No. 3459297

An object of this invention is to provide the obstruction detection apparatus which can perform an obstruction detection stably, even when it is a case where a seat board hits an obstruction.

The technical means adopted by the present invention in order to solve such problems are an upper seat plate provided at the lower end of the shutter curtain, a lower seat plate that can be moved upward relative to the upper seat plate, and between the both seat plates. A swing lever that inputs an obstacle detection switch by rotating as the lower seat plate moves upward, and a pair of abutted portions that are provided between the two seat plates and spaced apart in the seat plate expecting direction. A rotation detecting body, a link connecting the swing lever and the rotation detecting body, and an operating portion for rotating the rotation detecting body in contact with the contacted portion by the upward movement of the lower seat plate. And an operating part comes into contact with at least one of the pair of contacted parts and the rotation detecting body rotates, whereby the swing lever swings to detect an obstacle. . In one aspect, a rotation detection body that rotates in the same direction as the swing lever is provided inside the upper seat plate, and the rotation detection body has an upper end portion (actuating portion) on each side of the lower seat plate. Are connected to the swing lever via a link, and the lower seat plate is in contact with the obstacle and moved up with respect to the upper seat plate. Sometimes, at least one of the side edges pushes up the contacted portion to rotate the rotation detection body upward, and the rotation of the rotation detection body is transmitted to the swing lever via the link to swing. Turn the lever to input the detection switch.

In one preferred embodiment, the link is parallel to an imaginary line connecting the pivot point of the swing lever and the pivot point of the rotation detector. That is, a virtual line connecting the link, the rotation fulcrum of the swing lever and the rotation fulcrum of the rotation detector, and a virtual straight line connecting the rotation fulcrum and the link pivoting portion in the rotation detector, the swing lever In this case, a parallelogram is formed from the rotation fulcrum and a virtual straight line connecting the link pivoting portion. Even when the rotation detector and the swing lever are rotated, the link is The parallel state of the virtual line connecting the rotation fulcrum and the rotation fulcrum of the rotation detector is maintained. Therefore, the swing lever and the rotation detector rotate upward by substantially the same angle when the lower seat plate moves up.

Other technical means adopted by the present invention include an upper seat plate provided at the lower end of the shutter curtain, a lower seat plate that can be moved upward relative to the upper seat plate, and a lower seat plate provided between the both seat plates. A detection switch is input by rotating with the upward movement, and a swing lever having a pair of abutted parts spaced apart in the seat plate expecting direction and an upward movement of the lower seat plate to the abutted part. An operating portion that contacts and pivots the swing lever, and the swing lever swings to detect an obstacle when the operating portion contacts at least one of the pair of contacted portions. It is characterized by. In this technical means, the rotation detector itself constitutes a swing lever. In one mode, the operation part is constituted by the upper end part of each side of the lower seat plate (in the embodiment described later, a horizontal side formed at the upper end of the side).

In one preferred embodiment, the obstacle detection device has a plurality of swing levers, and only one swing lever directly inputs a detection switch, and each swing lever is connected to each other by a wire, so that at least A detection switch is input by rotating one swing lever upward.

In the first technical means of the present invention, since the rotation detecting body that rotates upward by the upward movement of the lower seat plate is connected to the swing lever via the link, the lower seat plate hits the obstacle. The operating portion (in a preferred embodiment, the upper end portion of at least one side of the lower seat plate) is in contact with either one of the pair of contacted portions spaced apart in the seat plate expecting direction of the rotation detector. Since the rotation detector is rotated by pushing it up, obstacle detection can be detected satisfactorily. In the second technical means of the present invention, even if the lower seat plate hits the obstacle, the operating portion (in a preferred embodiment, the upper end portion of at least one side of the lower seat plate) is the seat plate of the swing lever. Since the swinging lever is rotated by abutting on one of the pair of contacted parts separated in the expected direction and pushing upward, the obstacle detection can be detected well. Further, in the pair of abutted portions that are separated in the seat plate expecting direction, a larger distance can be better dealt with per piece. Furthermore, since the actuating part that pushes up the abutted part can be constituted by the lower seat plate part, it is advantageous not only in reducing the number of parts, but also the actuating part is directly abutted by the upward movement of the lower seat plate. As the part is pushed up, obstacles can be detected more reliably. In particular, in the second technical means, the number of parts is small, the mechanical loss is small until the uplift of the seat plate is transmitted to the detection switch, and the obstacle can be detected more reliably.

FIG. 1 is a schematic front view of the shutter device. Guide rails 1 are erected on both the left and right sides of the building opening, and the shutter curtain 2 moves up and down while being guided by the guide rail 1 at both ends, thereby opening and closing the building opening. The shutter curtain 2 is constructed by connecting a plurality of slats 3 in the vertical direction, and the upper end of the shutter curtain 2 is connected to a winding shaft 4 installed above the building opening. As the shaft 4 rotates, the shutter curtain 2 is wound around the winding shaft 4 to open the opening, or the shutter curtain 2 wound around the winding shaft 4 is fed out to close the opening. .

The winding shaft 4 is connected to the opening / closing machine 5 and is rotated by the output from the opening / closing machine 5. The opening / closing operation of the shutter curtain 2 is performed by the operation switch 6. The operation switch 6 is electrically connected to the switch 5 via the control unit 7, and when the raising button of the operation switch 6 is pressed, an open signal is transmitted from the control unit 7 to the switch 5, and the switch 5 As a result, the take-up shaft 4 is rotated in the direction of taking up the shutter curtain 2. When the lowering button of the operation switch 6 is pressed, a closing signal is transmitted from the control unit 7 to the opening / closing device 5, and the winding shaft 4 is rotated by the opening / closing device 5 in a direction in which the shutter curtain 2 is extended. When the stop button of the operation switch 6 is pressed, the drive signal to the opening / closing machine 5 is interrupted via the control unit 7 and the rotation of the winding shaft 4 is stopped.

A seat plate composed of an upper seat plate 10 and a lower seat plate 11 is attached to the lower end of the shutter curtain 2, and the detection member 12 provided between the upper seat plate 10, the lower seat plate 11 and the upper seat plate 10, and the lower seat plate 11. Obstacle detection at. The detected signal is transmitted by wire to the transmitting unit 8 provided near the end of the seat plate, and the signal transmitted to the transmitting unit 8 is further wirelessly transmitted to the receiving unit 9 provided above the opening. Sent. When the receiving unit 9 receives the detection signal, the driving signal to the opening / closing machine 5 is cut off via the control unit 7 and the rotation of the winding shaft 4 is stopped.

Both the upper seat plate 10 and the lower seat plate 11 are composed of long members. The upper seat plate 10 is connected to the lowermost slat 3, and the lower seat plate 11 is suspended so as to be able to move upward relative to the upper seat plate 10.

The upper seat plate 10 is formed at the rising vertical side 100 for connecting to the lowermost slat 3, the horizontal upper side 101, the opposing side sides 102, 102, and the lower ends of the side sides 102, 102. And horizontal locking edges 103, 103. On the lower surface of the upper side 101, locking sides 104, 104 having an L shape in cross section are formed. A detection member 12 and a link mechanism 13 described later are received in a space surrounded by the lower surface of the upper side 101 and the inner surfaces of the side sides 102 and 102. The guide groove formed by the opposing locking sides 104 and 104 functions as a mounting portion of the main body 120 of the detection member 12.

The lower seat plate 11 is formed on the opposite side sides 110, 110, the horizontal locking sides 111, 111 formed at the upper ends of the side sides 110, 110, and the lower ends of the side sides 110, 110. It comprises a horizontal abutting side 112, 112 and a dish-shaped bottom side 113 that integrally connects the abutting sides 112, 112. In the present embodiment, the upper ends of the side edges 110, 110 of the lower seat plate 11, that is, the locking sides 111, 111 (separated in the prospective direction of the seat plate) abut on a contacted portion to be described later. The operation part is constituted.

The upper seat plate 10 and the lower seat plate 11 are in a state of extending in the height direction (a state in which the lower seat plate 11 is in a lower limit position with respect to the upper seat plate 10) and a state of being expanded and contracted (the lower seat plate 11 becomes the upper seat plate 10). On the other hand, the posture can be changed between the upper limit position and the upper limit position. In a state where the lower seat plate 11 is at the lower limit position with respect to the upper seat plate 10, a state in which the engaging side 111 of the lower seat plate 11 is engaged with the upper surface of the engaging side 103 of the upper seat plate 10. Is suspended from the upper plate 10. When the lower seat plate 11 is in the upper limit position with respect to the upper seat plate 10, the contact side 112 of the lower seat plate 11 is in contact with the lower surface of the locking side 103 of the upper seat plate 10.

FIG. 2 is a partially enlarged view of a seat plate composed of an upper seat plate 10 and a lower seat plate 11, and a plurality of detection members 12 are arranged at intervals in the length direction of the seat plate. In FIG. 2, the detection member 12 located at the left end is for turning on and off the detection member main body 120, the detection switch 121 provided on the main body 120, and the detection switch 121 as shown in an enlarged view in FIG. A swing lever 122 is provided on the main body 120 so as to be pivotable in the vertical direction via a pivotal support shaft 122a. The swing lever 122 is biased downward by a spring 125. The detection member 12 is attached to the lower surface of the upper side 101 of the upper seat plate 10 via the main body 120. When the lower seat plate 11 at the lower end of the lowering shutter curtain 2 comes into contact with an obstacle, the lower seat plate 11 moves upward relative to the upper seat plate 10 and swings as the lower seat plate 11 moves upward. The moving lever 122 is rotated upward, and the detection switch 121 is turned “on”. A detection signal from the detection switch 121 is transmitted to the transmission unit 8 via a wiring (not shown) extending in the upper seat plate.

A plurality of detection members 12 are arranged at intervals along the length direction of the upper seat plate 10, but not all detection members 12 may include the detection switches 121. In the aspect shown in FIG. 2, the detection switch 121 is provided only on one detection member 12 located at the left end, and the other detection members 12 are rotatable up and down with respect to the main body 120 and the main body 120. The swing lever 122 is provided. Each swing lever 122 is formed with a wire attachment portion 123. By connecting the swing lever 122 of each detection member 12 to each other by a wire 124, the swing lever 122 of each detection member 12 is simultaneously rotated upward. The obstacle is detected by the detection switch 121 of the detection member 12 located at the end. By doing so, it is only necessary to prepare one detection member 12 having an expensive detection switch 121, which is excellent in terms of cost. The swing lever 122 of the detection member 12 at the left end is biased downward by a spring 125, and the swing levers 122 are connected to each other by wires 124, so that the lower seat plate 11 is the upper seat plate. When it is at the lower limit position with respect to 10, each swing lever 122 is rotated downward. When the detection switches 121 are provided on all the detection members 12, the wires 124 for connecting the swing levers 122 to each other are not necessary, and it is necessary to bias all the swing levers with springs.

The link mechanism 13 of the swing lever 122 will be described. In FIG. 2, the main body 120 of the detection member (without the detection switch) 12 other than the detection member (with the detection switch) at the left end is positioned on the side where the swing lever 122 is provided, and the upper seat plate. A support member 130 having a substantially U-shaped cross-sectional view extending in the length direction of 10 is provided. The support member 130 has a base end attached to the detection member main body 120, the support member 130 extends beyond the swing lever 122, and a rotation detector 131 is connected to the distal end side of the support member 130 via the shaft portion 132. It is mounted so that it can rotate freely. The shaft portion 132 extends in a direction orthogonal to the length direction of the upper seat plate 10 (a seat plate expecting direction), and the rotation detector 131 is rotatable in the vertical direction with respect to the support member 130.

The rotation detector 131 has a triangular shape composed of two long sides and one short side in a side view, and a vertex at which the two long sides intersect has a rotation fulcrum having a shaft portion 132. In the remaining two vertices, a detector 133 is attached to a vertex far from the swing lever 122. The detection unit 133 includes a shaft portion 133a extending in a direction orthogonal to the length direction of the upper seat plate 10 (a seat plate expecting direction), and rollers 133b that are rotatably provided at both ends of the shaft portion 133a. The roller 133b constitutes a contacted portion. The pair of rollers 133b are separated in the seat plate expectation direction via a shaft portion 133a extending in the seat plate expectation direction. The pair of rollers 133 b that are separated in the seat plate expecting direction are disposed so as to face and approach the upper side of the locking side 111 at the upper end of the side 110 of the lower seat plate 11. The roller 133b is preferably rotatable, but may not rotate.

One end of the link 134 is pivotally attached to the top of the side close to the swing lever 122 via a shaft portion 135, and the other end of the link 134 is pivotally attached to the swing lever 122 via a shaft portion 136. Has been. The shaft portion 136 is provided at an intermediate portion between the rotation fulcrum 122a and the tip of the swing lever 122. In the illustrated example, the height of the shaft portion 135 is slightly higher than the height of the shaft portion 136. 134 extends slightly in an inclined manner. Further, the rotation detecting body 131 and the swing lever 122 are both arranged in parallel and inclined in a normal state (when the lower seat plate 11 is at the lower limit position with respect to the upper seat plate 10). Specifically, in the illustrated example, in the rotation detector 131, a virtual straight line connecting the shaft portion 132 constituting the rotation fulcrum and the shaft portion 135 pivotally attached to the link 134, the swing lever 122 rotates. The virtual straight lines connecting the fulcrum 122a and the shaft portion 136 to which the link 134 is pivoted are parallel to each other, and both are inclined at an angle of 60 degrees with respect to the horizontal line. As shown in FIG. 5, when an obstacle comes into contact with the lower seat plate 11, the link 134 moves up in a parallel or substantially parallel manner as the lower seat plate 11 moves upward.

FIG. 5 is a diagram for explaining the movement of the detection mechanism using a link. In the upper diagram of FIG. 5, the lower seat plate 11 is at the lower limit position with respect to the upper seat plate 10. Normally, the shutter curtain moves up and down with the upper seat plate 10 and the lower seat plate 11 in this state. In the illustrated example, the rotation detector 131 (virtual straight line connecting the shaft portion 132 constituting the rotation fulcrum and the shaft portion 135 pivotally attached to the link 134) and the swing lever 122 (the rotation fulcrum 122a and the link 134 are connected to each other). Both the virtual straight lines connecting the pivoted shaft portions 136 are inclined at an angle of 60 degrees with respect to the horizontal line.

The central view of FIG. 5 shows a state in which the lower seat plate 11 is moved upward by 15 mm in parallel from the state of the upper diagram of FIG. In this case, the upper surface of the bottom side 113 of the lower seat plate 11 comes into contact with the swing lever 122, and the locking sides 111 of the respective side sides 110 of the lower seat plate 11 come into contact with the rollers 133b of the detection unit 133 from the lower side almost simultaneously. Therefore, the swing lever 122 and the rotation detector 131 are simultaneously rotated upward, and the detection switch 121 is turned on by the upward rotation of the swing lever 122. In the illustrated example, the rotation detector 131 (virtual straight line connecting the shaft portion 132 constituting the rotation fulcrum and the shaft portion 135 pivotally attached to the link 134) and the swing lever 122 (the rotation fulcrum 122a and the link 134 are connected to each other). Both the virtual straight lines connecting the pivoted shaft portions 136 are inclined at an angle of 25 degrees with respect to the horizontal line. That is, the swing lever 122 and the rotation detector 131 are rotated by the same angle as the lower seat plate 11 moves upward. As described above, even when the swing lever 122 is pivoted upwards, the pivot detection body 131 is also pivoted upward at the same time, and the swing lever 122 and the pivot detection body 13 are connected. Since the link 134 moves upward in parallel from the posture shown in FIG. 5, the rotation detector 131 and the link 134 do not hinder the operation of the swing lever 122.

The lower diagram of FIG. 5 shows a state where one side of the lower seat plate 11 is moved upward by 13.8 mm from the state of the upper diagram of FIG. In this case, the upper surface of the bottom 113 of the lower seat plate 11 is in contact with the swing lever 122 and is lifted up to a certain extent (in the illustrated example, the posture is 60 degrees to 50 degrees with respect to the horizontal line). After that, the swing lever 122 does not rotate principally. A state in which the swing lever 122 is lifted dynamically is shown by a two-dot chain line in the front view of the lower diagram of FIG. 5 (shown by a solid line in the sectional view of the lower diagram of FIG. 5). However, when the locking side 111 of one side 110 of the lower seat plate 11 constituting the operating unit comes into contact with the one roller 133b of the detection unit 133 and pushes it up from below, the rotation detection body 131 is mainly driven. As the rotation detector 131 is rotated upward, the swing lever 122 is rotated upward via the link 134 (in the illustrated example, with respect to the horizontal line). The detection switch 121 is turned on when the swing lever 122 is rotated upward. In the illustrated example, the rotation detector 131 (a virtual straight line connecting the shaft portion 132 constituting the rotation fulcrum and the shaft portion 135 pivotally attached to the link 134) is inclined at an angle of 31 degrees with respect to the horizontal line. The swing lever 122 (virtual straight line connecting the shaft 136 on which the pivot fulcrum 122a and the link 134 are pivotally attached) is inclined at an angle of 29 degrees with respect to the horizontal line. That is, the swing lever 122 and the rotation detector 131 are rotated by substantially the same angle as the lower plate 11 moves upward. As described above, when the obstacle hits the lower seat plate 11 and the lower seat plate 11 and the upper seat plate 10 interfere with each other and tilt significantly, it is difficult for the swing lever 122 to rotate dynamically. Even in this case, one roller 133b of the detection unit 133 is lifted by the locking edge 111 at the upper end of the one side 110 of the lower seat plate 11, and the rotation detector 31 rotates upward. As the motion detection body 131 is rotated upward, the swing lever 122 is rotated upward via the link 134 and the detection switch 121 can be turned on.

Another embodiment of the present invention will be described with reference to FIGS. 7 and 8, the configurations of the upper seat plate 10 and the lower seat plate 11 are the same as those of the above-described embodiment, and the above description can be diverted, and detailed description thereof will be omitted. Further, throughout the specification, the same reference numerals are given to the same components, and the description of the members given the same numbers in FIGS. 7 and 8 is referred to if necessary. be able to.

In FIG. 8, the detection member 12 includes a detection member main body 120 and a swing lever 122 ′ provided on the main body 120 via a rotation support shaft 122 a so as to be rotatable in the vertical direction. The detection member 12 is mounted on the upper seat plate 10 via the main body 120 (refer to the above description for the configuration of mounting the main body 120 and the upper seat plate 10). In FIG. 8, the detection member 12 having the swing lever 122 ′ does not have a detection switch, and when the swing lever 122 ′ rotates upward, the wire 124 connected to the swing lever 122 ′. The swing lever 122 provided with the detection switch is pivoted upward (see the upper diagram in FIG. 8 and the center diagram).

The upward rotation of the swing lever 122 ′ accompanying the upward movement of the lower seat plate 11 will be described. The swing lever 122 'has a substantially triangular shape when viewed from the side. A plate portion 122A extending in a direction away from each other toward the both sides is integrally formed on the upper side of the swing lever 122'. The part 122A constitutes a pair of abutted parts spaced apart in the seat plate expectation direction. In a state where the lower seat plate 11 is at the lower limit position with respect to the upper seat plate 10, the plate portion 122 </ b> A of the swing lever 122 ′ has a locking side 111 (the seat plate's A pair of actuating parts spaced apart in the prospective direction). When the lower seat plate 11 comes into contact with an obstacle and moves upward with respect to the upper seat plate 10, the locking side 111 of at least one of the side sides 110 moves upward with the upward movement of the lower seat plate 11, When the locking side 111 that has moved upward contacts the plate portion 122A from below and pushes it up, the swing lever 122 ′ rotates upward. The abutted part is composed of the surface part of the plate, but in order to reduce the friction between the actuating part and the abutted part, a roller is attached to the abutted part or coated with resin. But you can.

The upper diagram of FIG. 7 shows a case where an obstacle comes into contact with the lower seat plate 11. In this case, the lower seat plate 11 tilts in the prospective direction of the seat plate, so that the locking side 111 on the tilted side corresponds. The abutting plate 122A is contacted from below and pushed up to rotate the swing lever 122 'upward. The lower diagram of FIG. 7 shows a case where an obstacle is in contact directly below the lower seat plate 11, and in this case, each locking side 111 of each side 110 of the lower seat plate 11 (separated in the prospective direction of the seat plate). However, the swing lever 122 'is rotated upward by abutting and pushing up the plate portions 122A spaced apart in the prospective direction of the seat plate.

A plurality of detection members 12 are arranged at intervals along the length direction of the upper seat plate 10, but at least one detection member 12 only needs to include a detection switch 121. 8, the detection switch 121 is provided only in one detection member 12 (corresponding to the detection member of the first technical means) located at the left end, and the other detection members 12 are the main body. 120 and a swing lever 122 ′ provided so as to be rotatable in the vertical direction with respect to the main body 120. Each swing lever 122 ′ is formed with a wire attachment portion 123. By connecting the swing lever 122 ′ of each detection member 12 to each other by a wire 124, the swing lever 122 ′ of each detection member 12 is simultaneously connected. Obstacle detection is performed by the detection switch 121 of the detection member 12 located at the end so as to rotate upward. The swing lever 122 of the detection member 12 at the left end is biased downward by a spring, and the swing levers 122 and 122 'are connected to each other by a wire 124. When in the lower limit position with respect to the upper seat plate 10, each swing lever 122 ′ is rotated downward. In the embodiment shown in the central view of FIG. 8, as in the embodiment shown in the upper view of FIG. 8, the detection switch 121 is provided only for one detection member 12 located at the left end portion. The swing lever 122 'has the same configuration as the other swing lever 122'. The lower diagram in FIG. 8 shows a mode in which detection switches 121 are provided on all the detection members 12, and the wires 124 that connect the swing levers 122 ′ are not necessary. Further, all the detection members 12 have springs (not shown), and all the swing levers 122 'are biased downward by the springs.

The present invention can be used in an obstacle detection device for a shutter device, for example, a heavy shutter.

It is the whole shutter apparatus schematic. It is a front view of the seat board provided in the lower end of a shutter curtain. It is the elements on larger scale of FIG. 2, Comprising: The obstruction detection member is shown. It is sectional drawing of the seat board part which concerns on this invention, Comprising: The lower seat board has shown the state which exists in a minimum position with respect to an upper seat board. The swing mechanism of the swing lever according to the present invention is shown. The upper diagram shows a state in which the lower seat plate is at the lower limit position with respect to the upper seat plate, and the center diagram shows the lower seat plate from the state of the upper diagram in FIG. Is a diagram showing a state in which one side of the lower seat plate is moved upward from the state of the upper diagram of FIG. A conventional obstacle detection device is shown. The left figure shows a state where the lower seat plate is at the lower limit position with respect to the upper seat plate, the middle figure moves up when the lower seat plate comes into contact with the obstacle, and the lower seat plate is the upper seat The state in the upper limit position with respect to the plate, the right figure shows a state in which the corner portion of the lower seat plate is tilted by contacting the obstacle. The rocking | fluctuation mechanism of the rocking lever which concerns on other embodiment is shown, An upper figure is sectional drawing and a front view which show the case where an obstruction hits a lower seat board, and a lower figure is a lower seat board from right under. It is sectional drawing and the front view which show the case where an obstacle contact | abuts. In both the upper figure and the lower figure, a lower seat board exists in an upper limit position with respect to an upper seat board. Several embodiments of the obstacle detection mechanism are shown. In the upper and center views, only one detection member is provided with a detection switch, and the swing levers of each detection member are connected to each other by wires. , All detection members are provided with detection switches.

Explanation of symbols

10 Upper seat plate 101 Upper side 102 Side side 103 Locking side 11 Lower seat plate 110 Side side 111 Locking side (actuating part)
112 Contact side 12 Detection member 122 Oscillating lever 122 'Oscillating lever 122a Rotating support shaft 13 Link mechanism 122A Plate part (contacted part)
130 Support member 131 Rotation detection body 132 Shaft part 133 Detection part 133a Shaft part 133b Roller (contacted part)
134 Link 135 Shaft part 136 Shaft part

Claims (5)

An upper plate provided at the lower end of the shutter curtain;
A lower seat plate that can move relative to the upper seat plate;
A swing lever that is provided between the seat plates and that rotates with the upward movement of the lower seat plate to input the detection switch;
A rotation detector having a pair of abutted portions provided between the two seat plates and spaced apart in the seat plate expecting direction;
A link connecting the swing lever and the rotation detector;
An operation part for rotating the rotation detecting body in contact with the contacted part by an upward movement of the lower seat plate;
Have
An obstacle of a shutter, wherein an operating part comes into contact with at least one of the pair of contacted parts and the rotation detecting body rotates, whereby a swing lever swings to detect an obstacle. Object detection device. The obstacle detection device according to claim 1, wherein the link is parallel to an imaginary line connecting a rotation fulcrum of the swing lever and a rotation fulcrum of the rotation detector. 3. The obstacle detection device according to claim 1, wherein the obstacle detection device has a plurality of swing levers, and only one swing lever directly inputs the detection switch, and the other swing levers are connected via the link. Connected to the rotation detecting body, and by connecting each swing lever with a wire, at least one swing lever rotates upward to input the detection switch. Obstacle detection device characterized. An upper plate provided at the lower end of the shutter curtain;
A lower seat plate that can move relative to the upper seat plate;
A swing lever provided between the two seat plates and having a pair of abutted portions that are separated from each other in the seat plate expecting direction by inputting a detection switch by rotating with the upward movement of the lower seat plate;
An operating part for rotating the swing lever in contact with the contacted part by an upward movement of the lower seat plate;
Have
An obstacle detection device for a shutter, wherein an operating part comes into contact with at least one of the pair of contacted parts to swing an oscillation lever to detect an obstacle. 5. The obstacle detection device according to claim 4, wherein the obstacle detection device has a plurality of swing levers, and only one swing lever directly inputs the detection switch, and the swing levers are connected to each other by wires. An obstacle detection apparatus configured to input a detection switch by rotating one swing lever upward.

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