JP2001262959A - Shutter device with obstacle detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shutter device with obstacle detector easy to assemble so that the cost can be reduced, and a shutter device with obstacle detector in which an obstacle detector can be precisely operated. SOLUTION: When a lower seat plate 20 interferes with an obstacle during the lowering of a shutter curtain 12, an upward load is applied to the lower seat plate 20 to rotate and displace the lower seat plate 20 upward from its general position to an upper seat plate 19. A link mechanism 24 in a guide rail 14 rotates and displaces a rocking plate 21 in the guide rail 14 from its general position in interlocking with the rotating displacement of the lower seat plate 20. A switch driving mechanism in a case 37 operates an obstacle detecting switch in the case 37 in interlocking with the rotating displacement of the rocking plate 21 from the general position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter device for opening and closing an opening such as a window or an entrance of a building, and more particularly to a shutter device which is raised by being wound around a winding shaft which is rotationally driven by a power drive means such as an electric motor. Also, the present invention relates to a shutter device in which a left end portion and a right end portion of a shutter curtain lowered by being unreeled from a winding shaft are held up and down by a left guide rail and a right guide rail, respectively.

[0002]

2. Description of the Related Art In a shutter device of this kind, when a seat at the lower end of a shutter curtain descending to completely close an opening of a building interferes with an obstacle, the operation of a power drive means is stopped. ing. In general,
An upper seat that holds the shutter curtain at its lower end with its left and right ends movable up and down by a left guide rail and a right guide rail, respectively, and can be displaced vertically with respect to this upper seat. When the lower seat plate interferes with an obstacle during the lowering of the shutter curtain and receives an upward load, the lower seat plate is positioned relative to the upper seat plate. Displaced upward from the normal position, a tape switch is disposed inside the guide rail over almost the entire length of the guide rail, and the lower seat plate is displaced upward from the normal position with respect to the upper seat plate. A link mechanism that presses the tape switch in conjunction with it is provided (for example, see Japanese Patent Application Laid-Open No. H11-350858).

[0003]

However, since the tape switch is relatively flexible, it is troublesome to dispose the tape switch in the guide rail, which causes an increase in cost. I was

A main object of the invention of this application is to provide a shutter device with an obstacle interference detection device which can be easily assembled and reduced in cost.

Another object of the present invention is to provide a shutter device with an obstacle detection device in which the obstacle interference detection device operates properly.

[0006]

According to a first aspect of the present invention, there is provided a shutter curtain which is raised by being taken up on a take-up shaft which is rotationally driven by power drive means, and is lowered by being taken out from the take-up shaft. In a shutter device in which a left end portion and a right end portion are held up and down by a left guide rail and a right guide rail, respectively, a seat plate provided at a lower end of the shutter curtain is provided. And an upper seat that is held by the right guide rail so as to be able to move up and down, and a lower seat that is connected to the upper seat so as to be vertically displaceable. When the seat plate interferes with obstacles and receives an upward load, the lower seat plate is displaced upward from the normal position with respect to the upper seat plate. A swinging plate attached to the guide rail so as to rotate about a vertical axis and extending over substantially the entire length of the guide rail is provided inside at least one of the two guide rails. A link mechanism for rotating and displacing the rocker plate from its normal position in conjunction with the lower seat plate being displaced upward from its normal position with respect to the upper seat plate; At the end of the guide rail, an obstacle detection switch that operates by displacing the switch lever by a predetermined amount from its normal position to generate an electric signal, and a switch for displacing the rocking plate from its normal position. After interlockingly displacing the switch lever from its normal position and displacing the switch lever by a predetermined amount, the switch lever will not be further displaced even if the rocking plate is further displaced. Are obstacle detecting device with the shutter device being characterized in that disposed and a switch driving mechanism which is configured to.

In this shutter device with an obstacle detecting device, when the lower seat plate interferes with an obstacle while the shutter curtain is descending, an upward load is applied to the lower seat plate, and the lower seat plate is displaced. Displaced upward from its normal position relative to the upper seat, the link mechanism displaces the rocker from its normal position in conjunction with the displacement of the lower seat relative to the upper seat,
The switch drive mechanism activates the obstacle detection switch in conjunction with the displacement of the rocker plate from the normal position. The rocker plate has much higher rigidity than the tape switch, and the lower seat plate Since the excessive amount of displacement of the rocking plate when the robot interferes with the obstacle is absorbed by the switch driving mechanism and an excessive load is not applied to the obstacle detecting switch, the rocking plate, the switch driving mechanism and the obstacle The workability of attaching the object detection switch to the guide rail is greatly improved as compared with the related art, and low cost can be achieved.

The invention according to claim 2 of the present application is the shutter device with the obstacle detection device according to claim 1, wherein the switch drive mechanism is rotated and displaced by the rocking plate. A shutter device with an obstacle detection device, comprising: a member; and a second rotating member that displaces the switch lever by being rotationally displaced by a cam surface formed on the first rotating member, The degree of freedom in arranging the obstacle detection switch is improved. .

According to a third aspect of the present invention, there is provided the shutter device with the obstacle detecting device according to the first aspect, wherein the switch driving mechanism is displaced by the swing plate. In addition, the shutter device is provided with an obstacle detection device, which is constituted by a rotating member having a cam surface for displacing the switch lever, and the switch driving mechanism is simple.

According to a fourth aspect of the present invention, a left end portion and a right end portion of a shutter curtain are raised by being taken up on a take-up shaft which is driven to rotate by power drive means and lowered by being taken out from the take-up shaft. In the shutter device in which the shutter curtain is held up and down by the left guide rail and the right guide rail, respectively, the seat plate provided at the lower end of the shutter curtain, the left end and the right end are respectively provided by the left guide rail and the right guide rail. An upper seat that is held up and down freely, and a lower seat that is connected to the upper seat so as to rotate vertically about an axis in the left-right direction. When the lower seat interferes with obstacles and receives an upward load, the lower seat pivots upward from the normal position with respect to the upper seat. Coordinated manner to, inside the at least one guide rail of said guide rails,
A rocking plate attached to the guide rail so as to rotate about a vertical axis and extending over substantially the entire length of the guide rail; and a vertically movable but vertically displaceable displacement relative to the one guide rail. The guide piece is engaged so as to be restrained and is relatively displaceable in the left-right direction with respect to the upper seat plate, but is rotated about a left-right axis with respect to a guide piece connected so as to move up and down integrally. A first lever pivotally attached to the first lever, a second lever pivotally attached to the first lever so as to rotate around an axis in the left-right direction, and the lower seat plate so as to be displaceably held in the left-right direction; A pivot member is formed from a shaft member coupled to a lever, and the swing plate is pivotally displaced from its normal position in conjunction with the lower seat plate being pivotally displaced upward from the normal position with respect to the upper seat plate. And a link mechanism. At the end of the guide rail, an obstacle detection switch that operates by displacing a switch lever by a predetermined amount from its normal position to generate an electric signal, and the rocking plate is rotationally displaced from its normal position. And a switch drive mechanism for displacing the switch lever by a predetermined amount from its normal position in conjunction with the shutter device.

In this shutter device with an obstacle detection device, even if the guide rail warps in the left-right direction due to a poor installation, the warp of the guide rail causes the guide piece to move relative to the upper seat plate and the lower seat plate in the left-right direction. Absorbed by the displacement, the relative positional relationship between the swing plate and the link mechanism is kept constant, so the obstacle detection switch operates properly when the lower seat interferes with obstacles while the shutter curtain is descending Is done.

The invention according to claim 5 of the present application is the shutter device with the obstacle interference detection device according to claim 1 or 4, wherein the rocking plate is inserted into the guide rail from an end thereof. The swing plate has a plurality of hinges for engaging with a shaft formed on the guide rail, and the shutter device is provided with an obstacle interference detection device. It becomes easy and the increase in the turning resistance of the rocking plate due to the warp of the guide rail in the left-right direction due to the improper installation can be reduced. .

The invention according to claim 6 of the present application is the shutter device with the obstacle detection device according to claim 1 or 4, wherein a cover for protecting the link mechanism from intrusion of dust is provided. This is a shutter device with an obstacle interference detection device, which can ensure smooth operation of the link mechanism.

According to a seventh aspect of the present invention, there is provided the shutter device with the obstacle detecting device according to the sixth aspect, further comprising a switch lever displaced by a predetermined amount from a normal position by the cover. A shutter device with an obstacle detection device, comprising a switch for detecting a lower stroke end position that operates by displacing a lever by a predetermined amount from a normal position and generates an electric signal,
The number of components is reduced.

The invention according to claim 8 of this application is the shutter device with the obstacle detection device according to claim 7, wherein the switch lever of the switch for detecting the end position of the descending stroke has a displacement of the switch lever. A shutter device with an obstacle detection device that integrally transmits a spring to the contact actuator and absorbs excessive displacement of the switch lever to prevent damage to the switch for detecting the end position of the downward stroke. it can.

According to a ninth aspect of the present invention, there is provided the shutter device with the obstacle detecting device according to the fourth aspect, wherein the extrusion has a hollow prism portion close to a rotation center axis of the lower seat plate. The lower side wall of the hollow prism portion is provided so as to project almost directly below the center of rotation of the lower seat plate when the lower seat plate occupies a normal position, and the upper seat plate is formed of a molding die. A shutter device with an obstacle detection device, characterized in that it is inclined so as to descend as it moves away from the rotation center axis with respect to the lower seat plate. When it interferes, it can be rotated properly.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an outline of a shutter device with an obstacle detection device according to the invention of this application will be described. FIG. 1 is a diagram of a shutter device 10 with an obstacle detection device applied to a window as viewed from the outside of a room. As shown in FIG. 1, a shutter device 10 with an obstacle detection device includes a shutter curtain 13 that is raised by being wound around a winding shaft 12 that is driven to rotate by an electric motor 11 and is lowered by being unreeled from the winding shaft 12, The shutter curtain 13 is provided with a left guide rail 14 and a right guide rail 15 for holding and guiding the left end and the right end of the shutter curtain 13 so as to be movable up and down. The winding shaft 12 is installed in the storage box 16, and the electric motor 11 is installed in the winding shaft 12. The shutter curtain 13
It is composed of a seat plate 17 constituting the lower end and a number of slats 18 constituting a portion above the seat plate 17.

The operation of the motor 11 is controlled by a controller (not shown). The operation buttons of the controller include a closing operation button for instructing to lower the shutter curtain 13, an opening operation button for instructing to raise the shutter curtain 13, and a stop operation button for stopping the lowering or raising of the shutter curtain 13. Etc.

When the opening operation button of the controller is temporarily pressed while the shutter curtain 13 is at the end position of the descending stroke or between the end position of the descending stroke and the end position of the ascending stroke, the controller rotates the electric motor 11 in one direction. The shutter curtain 13 and the winding shaft 12
To raise the shutter curtain. When the shutter curtain 13 rises to the rising stroke end position, a switch for detecting a rising stroke end position, which will be described later, is operated, and when an electric signal indicating the operation of the switch is input to the controller, the controller immediately stops the motor 11. Let it.

On the other hand, if the closing operation button is temporarily pressed while the shutter curtain 13 is at the end position of the upward stroke or between the end position of the upward stroke and the end position of the downward stroke, the controller rotates the electric motor 11 in the other direction. The shutter curtain is lowered by unwinding the shutter curtain 13 from the winding shaft 12. And
When the shutter curtain 13 is lowered to the end position of the descending stroke, an obstacle detection switch, which will be described later, is operated, and when an electric signal indicating the operation of the switch is input to the controller, the controller immediately stops the operation of the electric motor 11. Instead of the electric signal generated by the obstacle detection switch, an electric signal indicating the operation of the below-described lower stroke end position detection switch may be used.

While the controller is lowering the shutter curtain 13 toward the end position of the descending stroke based on the operation of the closing operation button of the controller, the seat plate 17 of the shutter curtain 13 interferes with the obstacle and detects the obstacle. When the switch is operated and an electric signal indicating the operation of the switch is input to the controller, the controller immediately stops or reverses the electric motor 11.

Further, when the shutter curtain 13 is lowered to the end position of the descending stroke, a switch for detecting the end position of the descending stroke, which will be described later, is operated. After an electric signal indicating the operation of the switch is input to the controller, the controller is opened. When the input of the electric signal indicating the operation of the switch for detecting the lower stroke end position to the controller is interrupted before the operation button is operated again (when the shutter curtain is forcibly raised from the outside), The controller immediately activates the electric motor 11 to rotate in the other direction so as to keep the shutter curtain 13 at the end position of the descending stroke.

Next, details of the obstacle detecting device and the like will be described.

First, the seat plate 17 at the lower end of the shutter curtain 13 will be described. FIG. 2 shows a cross section of the seat plate 17. In FIG. 2, the left side is the indoor side, and the right side is the outdoor side. FIG. 2 shows a state in which the seat plate 17 does not interfere with the obstacle and is located at a position above the lower stroke end position. The seat plate 17 includes an upper seat plate 19 that is rotatably connected to a slat immediately above the slat about a left-right axis,
The lower seat plate 20 is connected to the upper seat plate 19 so as to be rotatable about a left-right axis.

The upper seat plate 19 is made of an extruded mold member made of aluminum, and is provided at the upper end of the lightweight and highly rigid hollow prism 19a for accommodating a bar member of a manual lock mechanism to be described later. A portion 19b is provided, and a shaft holding portion 19c which is long in the left-right direction and has a C-shaped cross section for rotatably connecting to the slat directly above is provided on the upper end side of the housing portion 19b. Have been. At the lower end side of the hollow prism portion 19a, an overhang portion 19d that extends toward the indoor side is provided, and at the tip of the overhang portion 19d, the lower end plate 20 is long in the left and right direction for rotatably connecting the lower seat plate 20. A shaft holding portion 19e having a C-shaped cross section is provided. Further, a locking portion 19f on the outside of the room below the hollow prism portion 19a restricts the lower seat plate 20 from rotating further downward from the normal position shown in FIG. 2 and prevents the intrusion of dust. Is provided. The length of the upper seat plate 19 in the left-right direction is equal to that of the slat 18, and the left end portion and the right end portion of the upper seat plate 19 are held by the left guide rail 14 and the right guide rail 15 so as to be vertically movable.

The lower seat plate 20 is made of an extruded mold material made of aluminum material. The shaft holding portion of the upper seat plate 19 is provided at a corner above the hollow prism 20a, which is lightweight and highly rigid, and on the indoor side. A shaft portion 20b in the left-right direction which is rotatably held by 19e is provided. Hollow prism 2
A locking portion 20c cooperating with a locking portion 19f of the upper seat plate 19 is provided at a corner on the upper side and the outdoor side of 0a. The length of the lower seat plate 20 in the left-right direction is slightly shorter than the interval between the left guide rail 14 and the right guide rail 15 on the opposite side, and the left and right ends of the lower seat plate 20 are the left guide rail 14.
In addition, it is not held by the right guide rail 15 but is located between the opposing sides of the left guide rail 14 and the right guide rail 15. Therefore, when no upward load is applied to the lower seat plate 20, the lower seat plate 20 rotates downward about the shaft portion 20b by its own weight and occupies the normal position in FIG. In addition, the lower seat plate 20 occupying the normal position interferes with an obstacle to apply an upward load to the lower seat plate 20, or the lower seat plate 20 occupying the normal position is a shutter curtain. When an upward load is applied to the lower seat plate 20 by contacting the lower end limiting member of the opening that is opened and closed by the opening 13, as shown in FIG.
It rotates upward about 0b.

In order to ensure that the lower seat plate 20 pivots even when the lower side wall 20d of the hollow prism portion 20a interferes with an obstacle, the lower seat plate 20 is normally positioned with respect to the upper seat plate 19. In the occupied state, the lower side wall 20d is made to protrude almost directly below the shaft portion 20b, and the lower side wall 20d is provided with a slope so as to descend as the distance from the shaft portion 20b increases.

A horizontal shaft member for operatively connecting to a link mechanism to be described later can be displaced in the left and right direction near the upper corner of the hollow prism 20a of the lower seat plate 20 and near the outdoor corner. Is provided.

FIG. 4 shows the left guide rail 14 and the seat plate 1.
7 is a perspective view of the guide rail 14 viewed from the indoor side; FIG.
A portion of the guide rail 14 has been cut away to show the components installed inside. As shown in FIG. 4, inside the guide rail 14, the swing plate 2 attached to the guide rail 14 so as to rotate about a vertical axis and extending over substantially the entire length of the guide rail 14 is provided.
1 and a link mechanism 24 for pivotally displacing the swing plate 21 from its normal position in conjunction with the lower seat plate 20 being pivotally displaced upward from its normal position with respect to the upper seat plate 19 is provided. ing.

The swing plate 21 for the guide rail 14 formed of an extruded mold made of aluminum material
As shown in FIGS. 5 and 6, the three hinges 23 provided on the rocking plate 21 are engaged with the vertical shafts 22 formed on the guide rails 14, respectively. Have been done. In order to facilitate the work of attaching the swinging plate 21 to the guide rail 14, the engagement between the shaft portion 22 and the hinge portion 23 is obtained by inserting the swinging plate 21 from the upper end opening of the guide rail 14 into the inside. It has become. The hinge portion 23 may be provided so as to be continuous over the entire length of the swinging plate 21. However, when the guide rail 14 is warped in the left-right direction due to improper installation, the shaft portion 2 is provided.
Between the hinge 2 and the hinge portion 23, and
3 or 4 to prevent the
It is preferable that the rocking plate 21 is scattered at about several places, so that a light rotation of the rocking plate 21 can be obtained. In this case, the uppermost hinge portion 23 is provided with a portion that is locked to the upper end of the shaft portion 22 to prevent the swing plate 21 from falling on the guide rail 14.

As shown in FIGS. 5 and 7 to 10, the link mechanism 24 is vertically movable with respect to the guide rail 14, but is engaged with the guide rail 14 so as to restrain displacement in the left-right direction. , A first lever 27 pivotally connected to a guide piece 25 connected so as to move up and down integrally by a left-right pivot 26, and left and right with respect to the first lever 27. Lever 29 pivotally connected by a pivot 28 in the direction shown in FIG.
e, the shaft member 30 is held so as to be displaceable in the left-right direction and connected to the second lever. The first lever 27 and the second lever 29 are such that the lower seat plate 20 is
9 occupies the position shown in FIG. 7 when occupying the normal position, but shown in FIG. 8 in conjunction with the lower seat plate 20 being pivotally displaced upward from the normal position with respect to the upper seat plate 19. Rotate to the position. The first lever 27 is moved from the position of FIG.
, The roller 31 attached to the tip of the first lever 27 abuts against the side surface of the swing plate 21, and the swing plate 21 is turned around the shaft 22. FIG. 5 shows a relative positional relationship between the first lever 27 and the swing plate 21 at the position shown in FIG. In FIG. 5, the normal position of the swing plate 21 is a position that is displaced clockwise by a predetermined angle from the position of the swing plate 21 shown in FIG.

The guide piece 25 has a protrusion 3 at the entrance into which the left end of the shutter curtain of the guide rail 14 is inserted.
2 has a groove 33 that fits slidably in the up-down direction, so that it can move up and down with respect to the guide rail 14, but restrains displacement in the left-right direction. Guide piece 25
Is a long hole 34 in the left-right direction provided in the upper seat plate 19.
The boss portion of the cap having a boss portion inserted from the outside of the room and coupled to the handle member 35 on the inside of the room has a hole into which the boss portion is fitted. It is displaceable but connected so as to move up and down integrally. As described above, the guide piece 25 can move up and down with respect to the guide rail 14 but is restrained from being displaced in the left-right direction, and the guide rail 25 can be displaced in the left-right direction relative to the upper seat plate 19, but is integrated. And the shaft member 30 is held so as to be relatively displaceable in the left-right direction with respect to the lower seat plate 20, so that the link mechanism 24 is configured as shown in FIG. 9 and FIG. It can be relatively displaced in the left-right direction with respect to the seat plate 17. Therefore, the relative positional relationship between the rocking plate 21 and the link mechanism 24 is not affected by the warp of the guide rail 14 in the left-right direction due to the improper installation.

A cover 36 that covers the first lever 27 and the second lever 29 of the link mechanism 24 is attached to the guide piece 25, and the cover 36 allows the first lever 27 and the second lever 29 to slide to each other. Intrusion of dust is reduced.

As shown in FIG. 4, a case 37 accommodating the obstacle detecting switch 38 and the switch driving mechanism 40 shown in FIGS.
Is installed. The obstacle detection switch 38 operates by displacing the switch lever 39 upward by a predetermined amount from the normal position shown in FIG. 11 to generate an electric signal. The switch driving mechanism 40 is arranged coaxially with the swinging plate 21 and is upwardly moved by a first rotating member 41 which is rotated and displaced by the swinging plate 21 and a cam surface 42 formed on the first rotating member 41. Switch lever 39
And a second rotating member 43 that rotates the upper part in a rotational direction. The first rotating member 41 is urged toward a normal position by a spring 44.
Urges the rocking plate 21 toward the normal position via the first rotating member 41. Cam surface 42 of first rotating member 41
Operates at an initial portion of the turning stroke of the first turning member 41 based on the swinging displacement of the swinging plate 21 from the normal position, turning the second turning member 43 upward, and turning the switch lever 3
9 is rotated from the normal position upward by a predetermined amount, and the second rotating member 43 is acted on in the middle portion and the late portion to rotate the first rotating member 41.
And a flat portion 42b that does not cause rotational displacement.
Therefore, when the seat plate 17 interferes with an obstacle, the obstacle detection switch 38 can be reliably operated, and the obstacle detection switch 38 can be prevented from being damaged. That is, it is inevitable that the amount of rotation displacement of the rocking plate 21 from the normal position when the seat plate 17 interferes with an obstacle varies between products due to mass production. By setting the amount of rotation displacement from within the flat portion 42b of the cam surface 42, the switch lever 39 can be stably rotated upward from the normal position by a predetermined amount of displacement.

As shown in FIG. 4, a lower stroke end position detecting switch 45 is provided inside the lower end of the guide rail 14. This switch 45 corresponds to FIGS.
As shown in FIG. 7, the switch lever 46 is operated by being displaced by a predetermined amount from the normal position, and generates an electric signal. The switch lever 46 is displaced from the normal position by the engagement of the link mechanism 24 with the cover 36. The switch lever 46 is integrally formed with a spring portion 48 for transmitting the displacement to the contact actuator 47 and absorbing an excessive displacement of the switch lever 46.

As shown in FIG. 4, a switch 49 for detecting a rising stroke end position is provided at the upper end of the guide rail 14. The open / close switch 49 is provided with a switch lever 50
Is operated by being displaced by a predetermined amount from the normal position, and generates an electric signal. The switch lever 50 is displaced from the normal position by engagement with the handle member 35. A spring portion similar to the spring portion 48 of the switch lever 46 is formed integrally with the switch lever 50. By forming the engagement surface of the switch lever 46 engaging with the handle member 35 in a V shape, the left and right ends of the seat plate 17 can be
When the switch lever 46 is inserted into the guide rails 14, 15 from the upper ends of the handle members 35, the switch lever 46 is retracted from the passage of the handle member 35 by engagement with the handle member 35, which is convenient.

In FIG. 4, the accommodation portion 19 of the upper seat plate 19 is shown.
In FIG. 2B, a bar member 51 of a manual lock mechanism is movably accommodated in the left-right direction. The bar member 51 can be disengaged from a hole formed in the guide rail 14 by moving the bar member 51 in the left-right direction.

The oscillating plate 21, the link mechanism 24, the guide piece 25, the obstacle detecting switch 38, the switch driving mechanism 40, the lower stroke end position detecting switch 45, and the upper stroke end position detecting switch 49 include the guide rail 14, 15 is preferably attached to one of the handle members 35.
It is preferable that a manual lock mechanism and the like be provided on the seat plate 17. Rocking plate 21, link mechanism 24, guide piece 2
5. Obstacle detection switch 38, switch drive mechanism 4
0, a shutter device with an obstacle detection device in which a switch 45 for detecting a lower stroke end position and a switch 49 for detecting a lower stroke end position are mounted on the left guide rail 14, a swing plate 21, a link mechanism 24, a guide piece 25, An obstacle detection switch 38, a switch drive mechanism 40, a down stroke end position detection switch 45, and an up stroke end position detection switch 49 are attached to the right guide rail 15 to provide two types of shutter devices with an obstacle detection device. If a shutter device with an object detection device is prepared, a double window can be used (two types of shutter devices with an obstacle detection device may be provided side by side).

The obstacle detecting switch 52 and the switch driving mechanism 54 shown in FIGS. 18 to 21 may be used instead of the obstacle detecting switch 38 and the switch driving mechanism 40. This switch driving mechanism 54
19 is pivotally displaced from the normal position to the position shown in FIG. 19 by the rocking plate 21 by the pivot plate 55, and the pivot member 55 displaces the switch lever 53 of the switch 52 from the normal position by a predetermined amount. It is configured. The cam surface 56 of the rotating member 55 acts on an initial portion of the rotating stroke of the rotating member 55 from the normal position to displace the switch lever 53 by a predetermined amount from the normal position, and the cam surface 56 of the rotating member 55 It has a portion 56b that acts on the middle and late portions of the rotation stroke from the position and does not displace the switch lever 53 despite the rotation of the rotation member 53. A spring for urging the rotating member 55 toward the normal position is provided similarly to the spring 44 of the switch drive mechanism 40. This spring is shown in FIGS.
It is omitted in FIG.

[0040]

As described above, according to the invention of this application, it is possible to provide a shutter device with an obstacle detecting device which is easy to assemble and can be manufactured at low cost. A shutter device with an obstacle detection device that operates reliably can be provided.

[Brief description of the drawings]

FIG. 1 is a view schematically showing a shutter device with an obstacle detection device.

FIG. 2 is a diagram showing a cross section of an upper seat plate and a lower seat plate.

FIG. 3 is a view showing a movement of a lower seat plate with respect to an upper seat plate.

FIG. 4 is a perspective view showing a relationship between a seat plate and a left guide rail, and the like.

FIG. 5 is a cross-sectional view of a left guide rail to which a swing plate and the like are attached.

FIG. 6 is a perspective view showing attachment of the swing plate to a guide rail.

FIG. 7 is a diagram showing a configuration of a link mechanism.

FIG. 8 is a diagram showing the movement of a link mechanism.

FIG. 9 is a diagram showing a connection relationship between a link mechanism, a guide piece, and a seat plate.

FIG. 10 is a diagram showing a relative displacement between a guide piece and a seat plate.

FIG. 11 is a diagram showing a rocking plate, an obstacle detection switch, and a switch driving mechanism.

FIG. 12 is a diagram illustrating movements of a rocking plate, an obstacle detection switch, and a switch driving mechanism.

FIG. 13 is a diagram showing the operation of the switch driving mechanism.

FIG. 14 is a view showing the operation of the switch driving mechanism.

FIG. 15 is a view showing the operation of the switch driving mechanism.

FIG. 16 is a diagram illustrating a switch for detecting a descending stroke end position.

FIG. 17 is a perspective view showing a configuration of a switch lever of the switch for detecting a lower stroke end position.

FIG. 18 is a diagram illustrating a configuration of a switch drive mechanism different from the switch drive mechanism of FIG. 11;

FIG. 19 is a diagram showing the operation of the switch driving mechanism.

FIG. 20 is a diagram showing the operation of the switch driving mechanism.

FIG. 21 is a diagram illustrating the movement of a switch driving mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Shutter device with obstacle detection device 11 ... Electric motor 12 ... Rewinding shaft 13 ... Shutter curtain 14 ... Guide rail 15 ... Guide rail 17 ... Seat plate 18 ...・ Slats 19 ・ ・ ・ Upper seat plate 20 ・ ・ ・ Lower seat plate 20a ・ ・ ・ Hollow prismatic portion 20b ・ ・ ・ Shaft portion 20d ・ ・ ・ Lower side wall 21 ・ ・ ・ Swing plate 22 ・ ・ ・ Shaft portion 23 ... Hinges 24 ... Link mechanism 25 ... Guidepiece 27 ... First lever 29 ... Second lever 30 ... Shaft member 36 ... Cover 38 ... Obstacle detection Switch 39 ... Switch lever 40 ... Switch drive mechanism 41 ... First rotating member 43 ... First rotating member 45 ... Down stroke end position detection switch 46 ... Switch lever 47 ... Contact actuators 48 · Spring portion 52 ... obstacle detection switch 53 ... switch lever 54 ... switch driving mechanism 55 ... rotating member

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2E042 AA01 BA00 CA01 CB02 CB05 CB06 CB10 CB12 CC08 DA01 DB03

Claims (9)

[Claims] 1. A left-hand guide rail and a right-hand guide rail for a left end and a right end of a shutter curtain to be raised by being taken up on a take-up shaft which is rotationally driven by a power driving means and lowered by being taken out from the take-up shaft. In the shutter device, the shutter curtain has a seat plate provided at a lower end thereof, and an upper seat plate having a left end portion and a right end portion held by a left guide rail and a right guide rail, respectively. And a lower seat plate connected to the upper seat plate so as to be displaceable in the vertical direction, and the lower seat plate interferes with obstacles during the lowering of the shutter curtain, and applies an upward load. When received, the lower seat plate is displaced upward from the normal position with respect to the upper seat plate, and at least one of the two guide rails Inside the guide rail, a swing plate attached to the guide rail so as to rotate about a vertical axis and extending over substantially the entire length of the guide rail, and the lower seat plate is attached to the upper seat plate. On the other hand, a link mechanism for rotating and displacing the swing plate from its normal position in conjunction with being displaced upward from its normal position is provided, and a switch lever is provided at an end of the one guide rail. An obstacle detection switch that operates by displacing a predetermined amount from the normal position to generate an electric signal, and displaces the switch lever from the normal position in conjunction with the swing plate displacing from the normal position. And a switch drive mechanism configured to prevent the switch lever from being further displaced even after the swing plate is further displaced after the switch lever is displaced by a predetermined amount. Obstacle detecting device with a shutter device according to symptoms. 2. The shutter device with an obstacle detection device according to claim 1, wherein the switch driving mechanism is turned by the rocking plate, and a first turning member is provided.
A shutter device with an obstacle detection device, comprising: a second rotating member for displacing the switch lever by being rotationally displaced by a cam surface formed on the rotating member. 3. The shutter device with an obstacle detection device according to claim 1, wherein the switch driving mechanism is a turning member that is turned by the rocking plate, and the switch lever is displaced. A shutter device with an obstacle detection device, comprising a rotating member having a cam surface. 4. A left-hand guide rail and a right-hand guide rail at the left end and the right end of a shutter curtain which are raised by being taken up on a take-up shaft which is rotationally driven by a power drive means and lowered by being taken out from the take-up shaft. In the shutter device, the shutter curtain has a seat plate provided at a lower end thereof, and an upper seat plate having a left end portion and a right end portion held by a left guide rail and a right guide rail, respectively. And a lower seat plate connected to the upper seat plate so as to rotate vertically about a left-right axis, and the lower seat plate serves as an obstacle during the lowering of the shutter curtain. The lower seat plate is pivotally displaced upward from the normal position with respect to the upper seat plate when receiving a load in the upward direction due to interference. A swinging plate attached to the guide rail so as to rotate about a vertical axis and extending over substantially the entire length of the guide rail, inside the guide rail of at least one of the guide rails; A guide piece that is vertically movable with respect to the guide rail, but is engaged so as to restrain displacement in the left-right direction, and is relatively displaceable in the left-right direction with respect to the upper seat plate, but is connected so as to be integrally moved up and down. A first lever pivotally pivoted about a left-right axis with respect to the first lever, a second lever pivotally pivoted about this first lever about a left-right axis, and the lower lever. The lower seat is pivotally displaced upward from the normal position with respect to the upper seat, the shaft comprising a shaft member held by the side seat so as to be displaceable in the left and right direction and coupled to the second lever. And the rocking plate A link mechanism for rotating and displacing the switch lever from a normal position, and at an end of the one guide rail, an obstacle signal generating an electric signal by being operated by displacing a switch lever by a predetermined amount from its normal position. And a switch drive mechanism for displacing the switch lever by a predetermined amount from the normal position in conjunction with the swing plate rotating and displacing from the normal position. Shutter device with device. 5. The shaft device according to claim 1, wherein the swing plate is inserted into an end of the guide rail and formed on the guide rail. A shutter device with an obstacle detecting device, wherein a plurality of hinge portions for engaging with the swing plate are provided on the swing plate. 6. The shutter device with an obstacle detection device according to claim 1, further comprising a cover that protects the link mechanism from dust intrusion. Shutter device. 7. The shutter device with the obstacle detection device according to claim 6, further comprising a switch lever displaced by a predetermined amount from a normal position by the cover, and displacing the switch lever by a predetermined amount from the normal position. A shutter device with an obstacle detection device, comprising a switch for detecting a lower stroke end position that generates an electric signal by being actuated. 8. The shutter device with an obstacle detection device according to claim 7, wherein a displacement of the switch lever of the switch for detecting the end position of the descending stroke is transmitted to a contact actuator and the switch is operated. A shutter device with an obstacle detection device, wherein a spring portion for absorbing excessive displacement of a lever is integrally formed. 9. The shutter device with an obstacle detection device according to claim 4, wherein the lower seat plate is formed by an extruded mold having a hollow prism portion close to a rotation center axis of the lower seat plate and the hollow member. The lower wall of the prism portion is provided so as to protrude almost immediately below the center of rotation of the lower seat when the lower seat occupies the normal position, and as the distance from the center axis of rotation with respect to the upper seat increases. A shutter device with an obstacle detection device, wherein the shutter device is inclined so as to descend.