JP2003314171A - Shutter device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To enable locking even when an upward load does not act on the lower end of a shutter curtain. SOLUTION: Left and right ends of a shutter curtain 13 are held by guide rails 14 and 15 so as to be able to move up and down. An upper seat plate 19, and a lower seat plate 20 connected to the upper seat plate 19 so as to rotate vertically about a left-right axis,
Locking member 27 provided in guide rails 14 and 15
And a stopper member 24 that is locked to the locking member 27 in conjunction with the upward rotation of the lower seat plate 20, and a holding mechanism that holds the lower seat plate in an upwardly rotated state. ing.

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 openings such as windows and entrances of buildings.

[0002]

2. Description of the Related Art As one of such shutter devices, the left and right side ends of a shutter curtain are held by guide rails so as to be able to move up and down, and are raised by being wound around a winding shaft and fed out from the winding shaft. There is known a shutter device that lowers and opens and closes by doing so. The shutter device is provided with a lock mechanism that locks in the closed state for security reasons.

As a conventional technique, Japanese Patent Laid-Open No. 2000-3370 is used.
No. 62 discloses a lock mechanism in which a lock member having a shutter curtain attached to its lower end rotates when the shutter is fully closed, and engages with a lock receiver attached to a lower frame to automatically lock.

[0004]

However, since the prior art is a mechanism for rotating the lock member to engage with the lock receiver by utilizing the action of the lower end of the shutter curtain landing on the lower frame, the shutter ventilation is ensured. Therefore, there was a problem that the lower end could not be locked when it was open to the extent that no one could enter it.

The shutter curtain slats have openings for ventilation and daylighting. When the shutter curtain is fully closed, the clearance between the slats is shortened to close the openings, and the shutter curtain is rolled up in the opening direction. In the shutter device in which the clearance between the slats expands due to the weight of the slats and the opening opens when the shutter is opened, when locking is attempted when the opening is open, the conventional technique The clearance between the end slat and the next slat must be eliminated or shortened by landing on the lower frame, and the shutter curtain must be stopped with the clearance between the slat of other openings widened. Therefore, highly accurate stop position control is required.

Since this is a mechanism for rotating the lock member and engaging the lock receiver by utilizing the above action, there is a problem that the clearance between the slats is shortened and the opening is closed.

The present invention solves the above problems and provides a shutter device that can be locked even when an upper load is not applied to the lower end of the shutter curtain.

[0008]

In order to solve the above technical problems, the technical means taken in claim 1 of the present invention (hereinafter, referred to as the first technical means) is a winding shaft. In a shutter device in which the left and right side end portions of the shutter curtain, which are raised by winding up and lowered by unwinding from a winding shaft, are respectively held up and down by guide rails, and located at the lower end portion of the shutter curtain. An upper seat plate whose end portions are respectively held by the guide rails so as to be able to move up and down, a lower seat plate connected to the upper seat plate so as to rotate in the vertical direction about a horizontal axis, and the guide A locking member provided inside the rail, a stopper member that locks with the locking member in conjunction with the upward rotation of the lower seat plate, and the lower seat plate being rotated upward. Holding mechanism for holding a state is a shutter device which is characterized in that is provided.

The effects of the above first technical means are as follows.

That is, since the stopper member is locked by the locking member in conjunction with the upward rotation of the lower seat plate, and the lower seat plate is held in the state of being rotated upward by the holding mechanism. The lock can be locked even when the upward load does not act on the lower end of the shutter curtain.

In order to solve the above technical problems, the technical means taken in claim 2 of the present invention (hereinafter referred to as the second technical means) is such that the holding mechanism has a locking position and an unlocking position. An operating portion provided on the upper seat plate so as to be operable at any one of the positions and an up-and-down moving member that moves up and down in association with the operation of the operating portion are provided, and the up-and-down moving member can be moved vertically. The shutter device according to claim 1, wherein the lower seat plate is configured to rotate in a vertical direction in conjunction with each other.

The effects of the second technical means are as follows.

That is, the lower seat plate is configured to rotate in the vertical direction in conjunction with the vertical movement member that is moved up and down by operating the operation portion that can be operated to either the locked position or the unlocked position. Therefore, a holding mechanism can be made with a simple configuration,
It is possible to provide a compact and low-cost locking mechanism.

In order to solve the above technical problem, the technical means taken in claim 3 of the present invention (hereinafter referred to as the third technical means) is provided in the vertical movement member with the upper seat. An inclined portion having an inclined surface that is inclined with respect to a horizontal plane in the longitudinal direction of the plate, and an engaging portion that engages with the lower seat plate so as to rotate the lower seat plate in the vertical direction when moved up and down are provided. The operation portion has a holder fixed to the upper seat plate, an operation lever movably held in the holder in the left-right direction, and a protrusion protruding from the operation lever to the upper seat plate side. The vertical moving member is provided between the operating lever and the upper seat plate, and the positioning member is provided below the portion of the holder facing the vertical moving member. The vertical movement member moves to the holder side Movement are regulated, said projecting member is a shutter apparatus according to claim 2, characterized in that it is in contact with the inclined surface.

The effects of the third technical means are as follows.

That is, the vertical moving member can be moved in the vertical direction by moving the protruding member in contact with the inclined surface to the left and right. Therefore, the vertical movement member can be moved up and down by moving the operation lever to the left and right to lock or unlock the shutter curtain.

In order to solve the above technical problems, the technical means taken in claim 4 of the present invention (hereinafter referred to as the fourth technical means) is the same as the vertical movement member of the positioning member. 4. The shutter device according to claim 3, wherein the contact surface is inclined in a direction in which the contact surface is separated from the vertical movement member as it goes upward.

The effects of the fourth technical means are as follows.

That is, since the abutting surface of the positioning member is inclined in a direction away from the vertical moving member as it goes upward, the engagement margin between the engaging portion of the vertical moving member and the lower seat plate should be kept substantially constant. You can

In order to solve the above-mentioned technical problem, the technical means taken in claim 5 of the present invention (hereinafter referred to as the fifth technical means) is such that the vertical movement member has a longitudinal direction. A contact surface that is substantially horizontal in the left-right direction and an engaging portion that engages with the lower seat plate so as to rotate the lower seat plate in the vertical direction when moved up and down are provided. Is a holder fixed to the upper seat plate, a rotary shaft projecting from the holder to the upper seat plate side, and fitted to the rotary shaft so as to be rotatable around the rotary shaft. The operation lever and an abutting portion that is provided on the operation lever and that rotates with the rotation of the operation lever are provided, and the corresponding abutting portion abuts the abutting surface. 2 is the shutter device.

The effects of the fifth technical means are as follows.

That is, the vertical movement member can be moved in the vertical direction by rotating the contact portion that is in contact with the substantially horizontal contact surface, and the contact portion can be slightly rotated from the vertical direction. If stopped, the vertical movement member can be held at the upper or lower position. Therefore, by rotating the operation lever, the vertical movement member can be moved up and down to bring the shutter curtain into the locked state or the unlocked state.

In order to solve the above-mentioned technical problems, the technical means taken in claim 6 of the present invention (hereinafter referred to as the sixth technical means) is such that the stopper member is attached to the upper seat plate. On the other hand, a link piece pivotally supported about a horizontal axis is pivotally supported about a horizontal axis about a link piece, and a horizontal axis with respect to the lower seat plate. A lock piece provided inside the guide rail that is pivotally supported about the center of the guide rail and that rotates from the unlocked position to the locked position in conjunction with the upward displacement of the lower seat plate. The locking member is a locking piece provided on the guide rail so that the lock piece is locked when the lock piece position is located at the locking position. The shutter device according to any one of 1 to 5.

The effects of the sixth technical means are as follows.

That is, since the lock piece rotated in conjunction with the upward displacement of the lower seat plate is locked by the lock piece, the lock piece can be stored compactly in the guide rail. Can be locked

In order to solve the above-mentioned technical problems, the technical means taken in claim 7 of the present invention (hereinafter referred to as the seventh technical means) is such that the stopper member is attached to the upper seat plate. It is a projecting piece that is projected in the horizontal direction toward the guide rail, and the locking member is of a sensing plate pivotally supported about a vertical axis provided in the guide rail. It is a swing locking plate that swings in the horizontal direction in conjunction with rotation. One end side is pivotally supported by the left and right axis with respect to the upper seat plate, and the other end side can push the sensing plate. A first arm provided on the lower arm and one end side of the lower seat plate so as to rotate about an axis in the left-right direction, and the other end side of the lower arm is intermediate between one end side and the other end side of the first arm. A second arm which is axially supported is provided, and any one of claims 1 to 5 is provided. A shutter device crab described.

The effects of the seventh technical means are as follows.

That is, the engagement pressing portion of the first arm that is rotated in conjunction with the upward displacement of the lower seat plate presses the sensing plate to rotate, and interlocks with the sensing plate. Since the rocking lock plate can be locked by rocking the lock plate so that it can be locked with the projecting piece, it can be compactly housed in the guide rail and equipped with a sensor mechanism using the sensing plate. A locking mechanism is obtained.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a shutter device 10 applied to a window as seen from the indoor side. As shown in FIG. 1, a shutter device 10 includes a shutter curtain 13 that is raised by being wound around a winding shaft 12 that is rotationally driven by an electric motor 11 and is lowered by being unwound from the winding shaft 12, and this shutter curtain 1.
Guide rails 14 and 15 are provided for holding and guiding the left and right side end portions of 3 respectively so as to be vertically movable. Winding shaft 1
2 is installed in the storage box 16 and the electric motor 11
Is installed in the winding shaft 12. The shutter curtain 13 is composed of a seat plate 17 that constitutes a lower end and a large number of slats 18 that constitute a portion above the seat plate 17. The slat 18 is provided with a large number of lighting openings 18a for both ventilation and lighting. The clearance between the adjacent slats 18 is widened by the weight of the lower slats 18 and the seat plate 17, and the lighting opening 18a is opened as shown in FIG. When the seat plate 17 lands and the shutter curtain 13 is further unwound in the closing direction, it operates in a direction to reduce the clearance between the slats 18,
The lighting openings 18a are housed in the adjacent slats 18 so that the lighting openings 18a are closed.

The operation of the electric motor 11 is controlled by a controller (not shown). The operation buttons of this 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. The seat plate 17 is almost in contact with the lower frame, and the lighting opening 18 is provided.
There is a lighting button and the like in which a is opened (hereinafter referred to as a lighting position).

When the opening operation button of the controller is temporarily pressed while the shutter curtain 13 is in the lower limit fully closed position or between the lower limit fully closed position and the upper limit fully opened position, the controller causes the motor 11 to rotate in one direction. And the shutter curtain 13 is wound around the winding shaft 12 to raise the shutter curtain. Then, when the shutter curtain 13 moves up to the upper limit fully open position, an upper limit switch (not shown) installed in the guide rail 15 is activated and an electric signal indicating the operation of the switch is input to the controller. Immediately stops the electric motor 11.

On the other hand, when the closing operation button is temporarily pressed while the shutter curtain 13 is in the upper limit fully open position or between the upper limit fully open position and the lower limit fully closed position, the controller causes the motor 11 to rotate in the other direction. The shutter curtain 13 is actuated, and the shutter curtain 13 is unwound from the winding shaft 12 to lower the shutter curtain. When the lower limit switch (not shown) installed in the guide rail 15 is actuated by descending to the lighting position and an electric signal representing the actuation of the switch is input to the controller, the controller moves from the upper limit position to the seat plate. The time until contact is measured, and the time control by calculation is performed to operate and stop the electric motor 11 to the lower limit fully closed position.

When the shutter button 13 is pressed between the upper limit fully open position and the lower limit fully closed position by pressing the daylighting button or the shutter curtain 13 while the shutter curtain 13 is moving up or down, the shutter curtain 13 is pressed between the slats 18. Has the maximum clearance and the lighting opening 18a is open. Ventilation and daylight are obtained from the daylighting opening 18a.
When the stop operation button is pressed, the shutter curtain 13
Ventilation and daylight can also be obtained from the gap between the lower frame member 5 and the shutter curtain 13 that is closed by the. The user can set the shutter curtain 1 according to the preference of ventilation and lighting.
3 stop positions can be determined. When the lighting button is pressed, ventilation and lighting cannot be obtained from the gap between the lower frame member 5 and the shutter curtain 13, but the lighting opening 18 is provided.
Ventilation and daylight can be obtained from a. In this state, the inside cannot be seen from the outside, but it provides the user with the advantage that ventilation and daylight can be obtained. The seat plate 17 is provided with an operation unit 100 that can be operated in a locked position and a unlocked position, which will be described in detail later.

While the controller is moving the shutter curtain 13 downward toward the lighting position 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 the lower limit switch is activated. When 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 lighting position, the lower limit switch is operated and an electric signal indicating the operation of the switch is input to the controller, and then the opening operation button of the controller is operated again. In the meantime, when the input of the electric signal indicating the operation of the lower limit switch to the controller is interrupted (when the shutter curtain is forced to be raised from the outside), the controller immediately prompts the shutter curtain 13 to be closed to the lower limit fully closed position. The electric motor 11 is operated so as to rotate in the other direction.

Next, details of the locking mechanism will be described.
FIG. 2 is an exploded perspective view of a seat plate provided with a locking device as seen from the inside of the room. FIG. 3 is a partial front view of the seat plate in the unlocked state as seen from the indoor side, and FIG. 4 is a sectional view taken along line AA. FIG. 5 is a partial front view of the seat plate in a locked state as seen from the inside, and FIG.
It is a B sectional view. FIG. 7 is an explanatory view for explaining the unlocked state of the first lock mechanism provided at the left end of the seat plate when viewed from the inside of the room, and FIG. 8 is an explanatory diagram for explaining the locked state. 7 and 8, the left side is the indoor side and the right side is the outdoor side. FIG. 9 is an explanatory view for explaining the unlocked state of the second lock mechanism provided at the right end of the seat plate when viewed from the indoor side, FIG.
FIG. 7 is an explanatory diagram illustrating a locked state thereof. 9 and 10 are perspective views seen from the outside of the room.

The seat plate 17 is connected to an upper seat plate 19 which is rotatably and vertically movable with respect to the slat immediately above, and is rotatably connected to the upper seat plate 19 about a horizontal axis. It is constituted by the lower seat plate 20. In this specification, the left-right direction means the shutter device 1 as shown in FIG.
The left and right directions when 0 is viewed from the front. That is, the left-right direction is the longitudinal direction of the slat 18, and the seat plate 17
Is the longitudinal direction.

An L-shaped hole 39 is provided at a predetermined position on the inside of the room in the middle of the upper seat plate 19 in the left-right direction, and pop nuts 36 are attached to the round holes 35 provided on the left and right thereof. The cam 31, the bracket 34, the operation lever 32, and the case 33 are arranged in this order from the upper seat plate 19 side, and the bolt 37 is screwed into the pop nut 36 through the gourd-shaped hole 38, whereby the cam 31 and the operation lever 32.
Is attached to the upper seat plate 19 to form the operation unit 100. The cam 31 is provided between the bracket 34 and the cam 31.
A positioning member 45 is provided integrally with the case 33 at the lower end of the. The contact surface of the positioning member 45 with the cam 31 is inclined in a direction away from the cam 31 as it goes upward. The cam 31 is a vertically moving member, and the operation unit 10
A holding mechanism is formed together with zero. The cam 31 engages with the lower seat plate 20 and an inclined portion 31f having a cam sliding surface 31d that connects the horizontal surface 31b with the inclined surface 31a inclined to the horizontal surface in the longitudinal direction of the upper seat plate 19 with the R surface 31c. The engaging portion 31a is engaged with the semicircular portion 20e of the lower seat plate 20 by a vertically moving member provided with an engaging portion 31e for performing the operation. The operation lever 32 is provided with a pin (projecting member) 32a that is provided so as to project toward the upper seat plate 19 side.
Passes through the long hole 34a of the bracket 34, and the cam sliding surface 31
It is in contact with d. The engaging portion 31e is inserted into the hole 39 and is engaged with the semicircular portion 20e of the lower seat plate 20 as described later. The lever portion 32b of the operation lever 32 is discharged to the inside of the room from the elongated hole 33a of the case 33 so that the user can operate it. The operation lever 32 is provided so as to be movable in the left-right direction, and the cam 31 is provided so as to be movable in the vertical direction. A leaf spring 44 is installed between the lever portion 32b and the case 33, and a groove is formed in the case 33 so that the leaf spring 44 enters at the locked position and the unlocked position of the operation lever 32. A feeling of moderation can be obtained at the release position. In this embodiment, case 3
3 and the bracket 44 serve as a holder that holds the operation lever 32 so as to be movable in the left-right direction.

A first lock mechanism 3 for locking the shutter curtain so that it cannot be lifted is provided at the left end of the seat plate 17 in FIG. 2, and a shutter curtain is locked so that the shutter curtain cannot be lifted at the right end and the trapping is prevented. A second lock mechanism 4 for transmitting a signal is provided. A latch piece (protruding piece) 9 is provided on the right end portion of the upper seat plate 19 in FIG.

The upper seat plate 19 is composed of an extruded molding material made of an aluminum material, and is rotatable and vertically movable with respect to the slat immediately above it on the upper end side of the hollow prismatic portion 19a which is lightweight and highly rigid. A shaft holding portion 19b having a substantially L-shaped cross section that is long in the vertical direction of the paper surface for connection is provided. The hollow prismatic portion 19a is provided at the lower end side with an overhanging portion 19c that overhangs toward the indoor side. The tip end of this overhanging portion 19c is long in the vertical direction of the drawing for rotatably connecting the lower seat plate 20. A shaft holding portion 19e having a C-shaped cross section is provided. Further, the hollow prismatic portion 19
A locking portion 19d is provided on the outer side of the lower part of a for restricting the lower seat plate 20 from rotating further downward from the normal position shown in FIG. 2 and for preventing dust from entering. The length of the upper seat plate 19 in the left-right direction is the same as that of the slats 18, and the left and right end portions of the upper seat plate 19 are held by guide rails 14 and 15 so as to be lifted and lowered.

The lower seat plate 20 is made of an extruded mold material made of an aluminum material, and the shaft holding portion 19e of the upper seat plate 19 is provided on the upper and indoor corners of the lightweight and highly rigid hollow prismatic portion 20a. A shaft portion 20b in the left-right direction that is rotatably held by is provided. Hollow prism 2
An engaging portion 20c that cooperates with the engaging portion 19d of the upper seat plate 19 is provided at the corner of 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 distance between the guide rails 14 and 15 on the opposite side, and the left and right ends of the lower seat plate 20 are not held by the guide rails 14 and 15. Located between 15 opposite sides. When no load is applied to the lower seat plate 20 in the upward direction or when the action of holding the upper seat plate in the upward direction is not applied, the lower seat plate 20 rotates downward about the shaft portion 20b due to its own weight, and the lower seat plate 20 is rotated as shown in FIG. As shown in, the position is unlocked. Further, when an upward load is applied to the lower seat plate 20 which occupies the unlocked position, the lower seat plate 20 moves to the shaft portion 2.
It rotates in the upward direction about 0b to the locked position as shown in FIG.

In order to ensure that the lower seat plate 20 rotates even when the lower side wall 20d of the hollow prism 20a interferes with the obstacle, the lower seat plate 20 is lower than the upper seat plate 19 in the unlocked state. The side wall 20d is made to project almost directly below the shaft portion 20b, and the shaft portion 2 is provided on the lower side wall 20d.
The inclination is provided so as to descend as the distance from 0b increases.

In the first lock mechanism 3, the guide piece 21 at the end of the upper seat plate 19 is movable up and down with respect to the guide rail 14 inside the guide rail 14, but is constrained from displacement in the left-right direction. And is relatively displaceable relative to the upper seat plate 19 in the left-right direction, but is connected so as to move up and down integrally, and is rotated about a shaft 23 in the left-right direction with respect to the guide piece 21 thereof. And the lower seat plate 20. The link piece 22 thus connected is pivotally attached to the link piece 22 so as to rotate about a shaft 25 in the left-right direction.
On the other hand, it is composed of a lock piece 24 connected so as to rotate about a shaft 26 in the left-right direction and a locking piece 27 provided on the guide rail 14. A shaft member in the left-right direction of the lower seat plate 20 for operatively connecting with the lock piece 24 is held so as to be axially displaceable near the corner of the lower seat plate 20 above the hollow prismatic portion 20a and on the outdoor side. At the same time, the semicircular portion 2 for inserting and engaging the tip of the engaging portion 31e
0e is provided.

The link piece 22 and the lock piece 24 are at the positions shown in FIG. 7 when the lower seat plate 20 is unlocked from the upper seat plate 19, and the lower seat plate 20 is attached to the upper seat plate 19. On the other hand, in conjunction with the upward rotational displacement from the unlocked state, the rotationally displaced position shown in FIG. 8 is entered into the locked state.

As shown in FIGS. 7 and 8, the guide rail 14 is provided with a wall 14a having a downward end face 14b, and a locking piece 27 is attached to the wall 14a. The locking piece 27 is made of a spring steel plate and has a locking portion 27a that locks when the locking piece 24 occupying the locking position is lifted, and the wall 14a elastically moves in the thickness direction. The end face 14b facing down
It has a U-shaped mounting portion 27b that is locked to.

The guide piece 21 is movable up and down with respect to the guide rail 14, but is restricted from being displaced in the left-right direction, and the guide piece 21 is relatively displaceable in the left-right direction with respect to the upper seat plate 19, but integrally. The link piece 22 and the lock piece 24 are moved in the left-right direction with respect to the seat plate 17 by being moved up and down and the shaft member 26 being held so as to be relatively displaceable in the left-right direction with respect to the lower seat plate 20. Can be displaced relative to. Therefore, the link piece 2
2, the relative positional relationship of the lock piece 24 and the locking piece 27,
The link piece 22 and the lock piece 24 are always smoothly rotated without being influenced by the warp of the guide rail 14 in the left-right direction due to improper installation, and the lock piece 24 has a locking portion of the locking piece 27. 27b is properly locked.

A cover 28 for covering the link piece 22 and the lock piece 24 is attached to the guide piece 21, and this cover 28 reduces the intrusion of dust into the sliding portions of the link piece 22 and the lock piece 24. There is. The guide piece 21 may be omitted and the link piece 22 may be directly pivotally attached to the upper seat plate 19.

A guide groove 1 extending up and down the guide rail 15.
5a is equipped with an upper limit switch and a lower limit switch (not shown) that detect that the shutter curtain 13 has reached the upper limit and the lower limit and stop the motor 11, and also close the shutter curtain 13 in the OFF operation region of the upper limit switch and the lower limit switch. When an obstacle is collided during the operation, a lower limit switch (not shown) for operating a so-called pinching prevention mechanism for detecting the collision and immediately changing the closing operation of the shutter curtain 13 to the opening operation (reversing operation) Is installed.

The trapping prevention mechanism is provided with an upper seat plate 19 and a lower seat plate 2 mounted below the shutter curtain 13.
0, a guide piece 41 that is held on the upper seat plate 19 so as to be capable of reciprocating in the horizontal direction, and a link portion 43 that is linked to the rotation of the lower seat plate 20 and that is connected to the guide piece 41.
And the ridge 1 protruding into the guide groove 15a of the guide rail 15.
Sensing plate 42 pivotally supported by 5b so that it can swing horizontally
And a lower limit switch that is turned on to drive and control the motor so that the closing operation of the shutter curtain 13 is stopped or opened at the position where the sensing plate 42 is biased by the link portion 43.

The link portion 43 swings around a movable supporting shaft b2 movably held in a guide elongated hole b1 formed in the guide piece 41 of the lower seat plate 20.
And a second arm 52 that swings around a support shaft b3 held by the upper seat plate 19.

One end d1 of the first arm 51 has a movable support shaft b.
2 is pivotally supported, and the other end d2 is pivotally supported between one end d3 and the other end d4 of the second arm 52. The second arm 52 is
One end d3 is pivotally supported by the support shaft b3, and the other end d4 is the sensing plate 42.
And presses the sensing plate 42 with a spring (not shown)
It functions as an engagement pressing portion that swings in a direction against the urging force of.

The sensing plate 42 is placed at a position where it can be brought into and out of contact with the lower limit switch so that the lower limit switch for pinching operation, which is attached at a position not shown in the drawing on the upper end side of the guide rail 15, can be turned on and off. While facing each other, a spring (not shown, the same applies hereinafter) is constantly biased and held in a swinging position where the OFF operation state of the lower limit switch can be maintained.

The sensing plate 4 resists the biasing force of the spring.
When 2 is rocked to the position by the ON operation of the lower limit switch, the motor is controlled by the control unit to stop the closing operation of the shutter curtain 13 or switch the shutter curtain 13 to the opening operation.

The notch 6 is provided at the lower position of the sensing plate 42.
a is provided. The notch 6a allows the rocking locking plate 7 to move vertically between the lower wall 61 and the upper wall 60, and can be interlocked with the rotation (horizontal horizontal rocking) of the sensing plate 42. Is attached to.

The second lock mechanism 4 is mounted on the sensing plate 42 and swings horizontally in the guide groove 15a of the guide rail 15 so that the second lock mechanism 4 is located at either the pinch detection operating position or the pinch detection non-operating position. The rocking locking plate 7 located,
The upper seat plate 19 is mounted together with the guide piece 41, and is composed of a latch piece (protruding piece) 9 that is a stopper member that is locked to the swing locking plate 7 at the pinch detection operating position.

The swing locking plate 7 is provided on the lower wall 61 of the notch 6a.
And the upper wall 60, and when the latch piece 9 is in the non-locking state, it moves to a position where it contacts the lower wall 61 by its own weight, and when it is in the locking state with the latch piece 9, It moves to a position where it abuts against the wall 61. If this position is set to the locking position of the latch piece 9 and the swing locking plate 7 in the ON region of the lower limit switch, the pinching reversal is not hindered (it becomes a locking state at the time of reversing).

The latch piece 9 is held by the guide piece 41 so as to be horizontally reciprocable so that the position where the guide rail 15 projects into the guide groove 15a can be changed (retractable) at a position above the link portion 43. . The latch piece 9 has a spring (not shown), one end of which is connected to the guide piece 41, and the other end of which is urged toward the inside of the guide groove 15a of the guide rail 15 by the spring. It is possible to move in a direction associated with the biasing force and in a direction against the biasing force.

Next, the operation of locking the shutter curtain 13 without fully closing it will be described. The shutter curtain 13 is lowered and stopped with the lock piece 24 positioned below the lower end of the locking piece 27 and the latch piece 9 positioned below the lower end of the swing locking plate 7.

In the state where the seat plate 17 is floated from the lower frame member 5 (that is, the seat plate 20 is rotated downward by its own weight),
When the lever portion 32b is moved from the lock release position at the left end shown in FIG. 3 to the lock position at the right end shown in FIG.
2a moves along the inclined surface 31a of the cam 31, and the cam 3
1 is moved upward. As a result, the semicircular portion 20e of the lower seat plate 20 engaged with the engaging portion 31e of the cam 31 is lifted upward, and as a result, the lower seat plate 20 is moved to the shaft portion 20.
It is rotated upward around b. When the lever portion 32b reaches the locked position shown in FIG.
The cam 31 is fixed at the uppermost position because there is no load reaching the horizontal plane 31b and pushing the lever portion 32b toward the unlocked position. The upward movement of the cam 31 is finished, and the cam 31 is located at the uppermost end. It is fixed by the leaf spring 44, and the cam 31 is fixed at the uppermost position. As a result, the lower seat plate 20 is also rotated and fixed to the uppermost position.

When the seat plate 17 is landed on the lower frame member 5 (that is, the seat plate 20 is rotated upward),
The lower seat plate 20 that is in contact with the lower frame member 5 receives the load from the lower frame member 5 and pivots upward to be fixed at the position shown in FIG.
As a result, both the first lock mechanism 3 and the second lock mechanism 4 are locked as described above. When the lever portion 32b is moved to the locked position, the pin 32a moves to the horizontal plane 31 of the cam 31.
come to b. As a result, the cam 31 is fixed to the uppermost end, and the lower seat plate 20 is fixed to the position rotated upward.

As a result, in the first lock mechanism 3, the upward movement of the semicircular portion 20e, the link piece 22, and the lock piece 2 are performed.
The lock piece 24 is fixed to the position shown in FIG. If the shutter curtain 13 is to be opened from the outside, it is possible to prevent the shutter curtain 13 from being opened because the tip end portion 24a of the lock piece 24 is locked by the locking portion 27a of the locking piece 27. The position of the locking piece 27 is provided at a position where the lock piece 24 is not allowed to enter through the gap between the shutter curtain 13 and the lower frame member when the locking piece 24 is locked.
Although FIG. 8 shows the shutter curtain 13 in which the lower seat plate 20 is in contact with the lower frame member 5, the shutter curtain 13 is in the fully closed state, but the operation is the same.

On the other hand, in the second lock mechanism 4, the semicircular portion 20e is moved upward and the first arm 51 and the second arm 5 are moved.
The second arm 52 is fixed to the position shown in FIG. 10 by the action of 2, and the sensing plate 42 is fixed by the end portion d4 of the second arm 52.
Is swung counterclockwise as viewed from above, and as a result, the swing locking plate 7 is fixed at the position shown in FIG. When the shutter curtain 13 is opened from the outside here, the latch piece 9 is locked by the swing locking plate 7, and the shutter curtain 13 is locked.
Can be prevented from being opened. The position of the swing lock plate 7 is set so that the shutter curtain 13 is locked when the latch piece 9 is locked.
It is provided at a position where entry is not allowed through the gap between the lower frame member and. This position is provided corresponding to the position of the first lock mechanism 3.

With the above operation, the shutter curtain 1
Even when 3 is fully closed, it can be locked more reliably without being fully closed. Therefore, the shutter curtain 1 remains open with the lighting opening 18a, and in some cases, leaving a gap between the shutter curtain 13 and the lower frame member 5.
3 can be locked.

If the shutter curtain 13 is opened from the outside without this lever operation portion, the seat plate 20
When the is lifted, a load is applied to the seat plate 20 from below, and the seat plate 20 rotates upward. The first lock mechanism 3 and the second lock mechanism 4 both act and are locked, but when the slat in the middle is lifted so as to be slid up (especially, it is easy to lift when the lighting opening 18a is open). The plate 20 pivots to the unlocked position due to its own weight, and the locked state cannot be maintained. In the past, the opening operation was detected and the motor was closed to prevent the shutter curtain from being opened, but it did not operate during a power failure.

When releasing the locked state, the lever portion 32
b is moved from the lock position at the right end shown in FIG. 5 to the lock release position at the left end shown in FIG. Since the pin 32a moves to the inclined surface 31a side of the cam 31 and loses the upward action of the cam 31, the lower seat plate 20 pivots downward due to its own weight, and
The locked state of the lock mechanism 3 and the second lock mechanism 4 is released. The cam 31 moves downward in accordance with the downward rotation of the lower seat plate 20.

When the cam 31 moves up and down, the engaging portion 31e of the cam 31 and the semicircular portion 20e of the lower seat plate 20 are engaged with each other to move, and the lower seat plate 20 is rotated.
Also moves back and forth. Since the contact surface of the positioning member 45 with the cam 31 is inclined in the direction away from the cam 31 as it goes up, the movement of the cam 31 in the front-rear direction is absorbed, and the engaging portion 31e and the semicircular portion 20e. It is possible to keep the engagement margin of the above substantially constant.

As described above, according to the present invention, it is possible to lock more reliably with a simple structure.

When the shutter curtain 13 comes into contact with an obstacle during the closing operation, the lower seat plate 20 receives the load from the obstacle and rotates upwards, as in the case where the shutter curtain 13 is fully closed. As a result, the second arm 52 is fixed at the position shown in FIG. 10 by the upward movement of the semicircular portion 20e and the actions of the first arm 51 and the second arm 52, and the second arm 5
The sensing plate 42 is swung counterclockwise when viewed from above by the end portion d4 of 2, the lower limit switch is turned on by the sensing plate 42, and a pinch prevention signal is transmitted to the controller.
The closing operation of the shutter curtain 13 is stopped. In this way, the second lock mechanism 4 can also serve as a trapping prevention mechanism.

Although the gourd-shaped hole 38 is used as the hole for mounting the case 33, it may be a round hole or an elongated hole. The amount of protrusion of the lock piece 24 and the second arm 52 is determined by the stroke of lifting the cam 31, but the vertical position of the case 33 can be adjusted by setting the gourd-shaped hole or the oblong hole diagonally, and the lock piece 24 and the second arm 52 can be adjusted. The protrusion amount of 52 can be adjusted. The position can be adjusted steplessly with the long hole, but there is a possibility that it will shift during use. On the other hand, with a gourd-shaped hole, it can be adjusted in two steps, but it can prevent misalignment during use.

FIG. 11 is an exploded perspective view of a seat plate provided with a locking device of another embodiment of the present invention as seen from the inside of the seat. The same parts as those in the embodiment of FIG. 2 are designated by the same reference numerals.

The upper seat plate 19 is provided with a projecting portion 19f which projects substantially horizontally toward the inside of the room. Holder 83
The hole 82c of the operating lever 82 is fitted to the rotary shaft 83a that is provided on the upper seat plate side. The operation lever 82 is provided with a lever portion 82c and a contact portion 82a.
The bracket 84, the cam 81, the operating lever 82, and the holder 83 are arranged in this order from the upper seat plate 19 side.
Is screwed to the holder 83 by the bolt 87, and the holder 83 is fixed by the bolt 86 to the hole 8 of the projecting portion 19f.
The operation portion 200 is formed by screwing at the position 5. The cam 81 is provided with a substantially horizontal contact surface 81a, and the contact portion 82a of the operation lever 82 is slidably contacted with the contact surface 81a. The cam 81 is provided with an engaging portion 81b, and the engaging portion 81b is inserted into the hole 39,
It is engaged with the semicircular portion 20e of the lower seat plate 20. The contact portion 82a rotates as the operation lever 82 rotates. The cam 81 is a vertically moving member, and forms a holding mechanism together with the operation unit 200.

The operation lever 82 stops when the contact portion 82a slightly overstrokes from above in the vertical direction. In order to ensure this fixing, a snap fit portion 83b made of resin is provided integrally with the holder 83. As a result, the cam 81 is fixed at its uppermost position. In the locking operation, the lever portion 82c is rotated in the clockwise direction in the figure and fixed to the end thereof. Then, the contact portion 82
Also, a is located near the uppermost end position, the cam 81 moves to the uppermost end, and the first locking mechanism 3 and the second locking mechanism 4 act as in the previous embodiment to enter the locked state. On the other hand, in the unlocking operation, the lever portion 82c is rotated counterclockwise in the figure and fixed to the end portion thereof. Then, the effect of restraining the cam 81 upward is lost, and the lower seat plate 20 rotates downward due to its own weight,
The first lock mechanism 3 and the second lock mechanism 4 are in the unlocked state.

In the embodiment, the first locking mechanism 3 is provided at the left end of the seat plate 17 and the second locking mechanism 4 is provided at the right end of the seat 17 when viewed from the inside of the room. A lock mechanism may be provided or a second lock mechanism may be provided.

[0074]

As described above, according to the present invention, the left and right side end portions of the shutter curtain, which are raised by being wound up on the winding shaft and lowered by being fed out from the winding shaft, can be raised and lowered by the guide rails. In the retained shutter device, an upper seat plate which is located at a lower end portion of the shutter curtain and is vertically held at its left and right side ends by the guide rails, and an axis in a lateral direction with respect to the upper seat plate is centered. A lower seat plate connected to rotate in the vertical direction, a locking member provided in the guide rail, and a locking member that interlocks with the upward rotation of the lower seat plate. Since the shutter device is provided with a stopper member for locking and a holding mechanism for holding the lower seat plate in a state of being rotated upward, Even when the load in the upward direction does not act on the end portion can be provided a shutter device which can be reliably locked.

[Brief description of drawings]

FIG. 1 is a front view of a shutter device applied to a window as seen from the inside of a room.

FIG. 2 is an exploded perspective view of a seat plate provided with a locking device as viewed from the inside of the seat.

FIG. 3 is a partial front view of the seat plate in the unlocked state as seen from the indoor side.

FIG. 4 is a sectional view of the seat plate taken along the line AA in the unlocked state.

FIG. 5 is a partial front view of the seat plate in a locked state as seen from the inside of the room.

FIG. 6 is a BB sectional view of the seat plate in a locked state.

FIG. 7 is an explanatory view illustrating a locked state of a first lock mechanism provided at the left end of the seat plate when viewed from the inside of the room.

FIG. 8 is an explanatory view illustrating a locked state of a first lock mechanism provided on the left end of the seat plate when viewed from the inside of the room.

FIG. 9 is an explanatory view illustrating a locked state of a second lock mechanism provided on the right end of the seat plate when viewed from the inside of the room.

FIG. 10 is a second view provided on the right end of the seat plate when viewed from the inside of the room.
Explanatory drawing explaining the locked state of the lock mechanism

FIG. 11 is an exploded perspective view of a seat plate provided with a locking device according to another embodiment of the present invention as seen from the inside of the seat.

[Explanation of symbols]

7 ... Swing locking plate 9 ... Latch piece (protruding piece) (stopper member) 13 ... Shutter curtain 14, 15 ... Guide rail 19 ... Upper seat 20 ... Lower seat plate 22 ... Link piece 24 ... Lock piece (stopper member) 27 ... Locking piece (locking member) 31, 81 ... Cam (vertical moving member) (holding mechanism) 31a ... inclined surface 31f ... Inclined part 31e ... Engaging portion 32 ... Operation lever 32a ... Pin (projecting member) 33 ... Case (holder) 34 ... Bracket (holder) 41 ... Guide piece 42 ... Sensing plate 45 ... Positioning member 51 ... First arm 52 ... second arm 81a ... Abutting surface 81b ... Engaging portion 82 ... Operation lever 82a ... Abutting part 83 ... Holder 83a ... rotating shaft 100, 200 ... Operation unit (holding mechanism) b1 ... Guide long hole d4 ... End (engagement pressing part)

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 2E042 AA01 CA01 CB00 CB01 CB02                       CB05 CB06 CB10 DA01 DB03

Claims (7)

[Claims] 1. Raising by winding on a winding shaft,
Further, in a shutter device in which the left and right side end portions of the shutter curtain that are lowered by being drawn out from the winding shaft are respectively held by a guide rail so as to be able to move up and down, the left and right side end portions of the shutter curtain are positioned at the lower end portion by the guide rail. An upper seat plate that is held so as to be lifted up and down, a lower seat plate that is connected to the upper seat plate so as to rotate in the vertical direction about a horizontal axis, and provided inside the guide rail. An engaging member, a stopper member that engages with the engaging member in conjunction with an upward rotation of the lower seat plate, and a holding mechanism that holds the lower seat plate in an upwardly rotated state. A shutter device characterized by being provided with. 2. The holding mechanism includes an operating portion provided on the upper seat plate so as to be operable in either one of a locked position and an unlocked position, and an up / down unit that moves up and down in association with the operation of the operating unit. 2. The shutter device according to claim 1, further comprising a moving member, wherein the lower seat plate is configured to rotate in the vertical direction in association with the vertical movement of the vertical moving member. 3. The vertical movement member includes an inclined portion having an inclined surface that is inclined with respect to a horizontal plane in the longitudinal direction of the upper seat plate, and rotates the lower seat plate in the vertical direction when moved vertically. As described above, an engaging portion that engages with the lower seat plate is provided, and the operation unit has a holder fixed to the upper seat plate and an operation that is held by the holder so as to be movable in the left-right direction. A lever and a projecting member projecting from the operation lever to the upper seat plate side are provided, and the vertical movement member is arranged between the operation lever and the upper seat plate, and the vertical movement of the holder is performed. The vertical movement member is restricted from moving toward the holder side by a positioning member provided on the lower side of a portion facing the member, and the projecting member is in contact with the inclined surface. The shutter device according to claim 2. 4. The shutter device according to claim 3, wherein a contact surface of the positioning member with the vertical movement member is inclined in a direction away from the vertical movement member as it goes upward. 5. The up-and-down moving member has an abutment surface whose longitudinal direction is substantially horizontal in the left-right direction, and an engaging surface which engages with the lower seat plate so as to rotate the lower seat plate in the up-down direction when the up-and-down motion is performed. An engaging portion is provided which is fitted to the operating portion, a holder fixed to the upper seat plate, a rotary shaft protruding from the holder to the upper seat plate side, and a rotary shaft on the rotary shaft. An operating lever that is fitted and rotatable around the rotation axis, and an abutting portion that is provided on the operating lever and that rotates with the rotation of the operating lever are provided.
The shutter device according to claim 2, wherein the contact portion is in contact with the contact surface. 6. The stopper member rotates about a horizontal axis with respect to a link piece that is pivotally supported about the upper seat plate about a horizontal axis. It is pivotally supported and is pivotally supported about the lower seat plate so as to rotate about an axis in the left-right direction, and is interlocked with the lower seat plate being pivotally displaced upward, from the unlocked position to the locked position Is a lock piece provided inside the guide rail that turns to, wherein the locking member is provided on the guide rail so that the lock piece is locked when the lock piece position is located at the locking position. The shutter device according to claim 1, wherein the shutter device is a provided locking piece. 7. The stopper member is a projecting piece that projects horizontally from the upper seat plate toward the guide rail, and the locking member is provided in the guide rail in a vertical direction. A swing lock plate that swings in the horizontal direction in conjunction with the rotation of a sensing plate that is rotatably supported about an axis, and one end of which is supported by the shaft in the left-right direction with respect to the upper seat plate. Is
A first arm having the other end capable of pushing the sensing plate, and one end of the lower seat plate pivotally supported so as to rotate about an axis in the left-right direction, and the other end of the arm has the other end. First
The shutter device according to any one of claims 1 to 5, wherein a second arm pivotally supported is provided between the one end side and the other end side of the arm.