JP3448540B2 - Shutter device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention of the present application relates to a shutter device for opening and closing openings such as windows and entrances of buildings, and more particularly to a shutter device which is lifted by winding on a winding shaft which is rotationally driven by a power driving means such as an electric motor. A shutter device in which left and right side end portions of a shutter curtain that is lowered by being drawn out from a take-up shaft are held by guide rails so as to be lifted up and down, and a lower frame member of an opening closed by the shutter curtain and the shutter curtain are lower ends. The present invention relates to a shutter device including a lock mechanism that locks a seat plate on a guide rail in conjunction with relative movement with a seat plate provided in the.

[0002]

2. Description of the Related Art A conventional shutter device of this type is described in Japanese Patent Application Laid-Open No. 11-350858. In this shutter device, the seat plate of the shutter curtain is composed of the upper seat plate and the lower seat plate, and the left and right side end portions of the upper seat plate and the lower seat plate are respectively held by the guide rails so as to be lifted and lowered. Lock pieces are pivotally attached to the left and right end portions of the lower seat plate so as to rotate about a longitudinal axis, and link pieces are centered on the left and right sides of the upper seat plate in the longitudinal direction. The left and right lock pieces and the link pieces are pivotally attached to each other by the shafts in the front-rear direction so that the lower seat plate is supported by the upper seat plate. Is provided with a fixed locking piece.

While the shutter curtain is descending, until the lower seat plate contacts the lower frame member of the opening, the lower seat plate is displaced downwardly with respect to the upper seat plate by its own weight. And the lock piece occupies the retracted unlocked position with respect to the locking piece of the guide rail. Immediately after the lower seat plate comes into contact with the lower frame member, the lock piece is rotated in conjunction with the lower seat plate being displaced upward with respect to the upper seat plate due to the lowering of the shutter curtain. It moves forward with respect to the stop and is displaced to the lock position. When the shutter curtain is fully closed, the lock piece occupies the lock position.When the shutter curtain lower seat plate is raised from the outside of the shutter curtain by the hand, the lock curtain is slightly raised. The lock piece engages with the engagement piece of the guide rail, and the shutter curtain is prevented from further rising.

[0004]

However, the structure in which the upper seat plate and the lower seat plate are connected by the lock piece and the link piece at each of the left and right end portions requires a large number of constituent parts and assembly steps, resulting in high cost. There is a problem to say.
In addition, since the lock piece rotates with respect to the locking piece of the guide rail due to the vertical displacement of the lower seat plate with respect to the upper seat plate, the locking piece of the guide rail is restricted by the limited vertical dimension of the seat plate. It is difficult to increase the amount of advancement / retraction of the lock piece with respect to the lock piece, the difference between the unlocked position and the locked position of the lock piece cannot be clarified, and the operation of the lock mechanism is unstable. Bending in the left-right direction causes a problem that locking between the lock piece and the locking piece of the guide rail becomes insufficient.

A main object of the invention of this application is to provide a shutter device which has a small number of constituent parts and a small number of assembling steps, and which is advantageous for cost reduction.

Another object of the invention of this application is that the operation of the lock mechanism is reliable, and even if the guide rail bends in the left-right direction due to improper installation, the lock piece reliably engages with the engagement piece when locked. The object of the present invention is to provide a shutter device that surely does not affect other operations when unlocked.

[0007]

The invention according to claim 1 of the present application relates to a shutter curtain which is raised by being wound around a winding shaft which is rotationally driven by a power driving means and is lowered by being drawn out from the winding shaft. A shutter device in which left and right ends are respectively held by guide rails so as to be lifted and lowered, and a seat device is interlocked with relative movement between a lower frame member of an opening closed by a shutter curtain and a seat plate provided at the lower end of the shutter curtain. In a shutter device provided with a lock mechanism for locking a plate to a guide rail, an upper seat plate that holds the left and right side end portions of the seat plate by the guide rails respectively, and a left and right plate with respect to the upper seat plate. Lower seat plate connected so as to rotate in the vertical direction about the axis of direction, and the lower seat plate is formed by lowering the shutter curtain. When the lower seat plate comes into contact with the lower frame member and receives an upward load, the lower seat plate is rotatably displaced upward from a normal position rotated downward by its own weight with respect to the upper seat plate. Inside one of the guide rails, a link piece connected to the upper seat plate so as to rotate about a horizontal axis, and a link piece that rotates about the horizontal axis with respect to the link piece. And the lower seat plate is pivotally connected to the lower seat plate so as to rotate about an axis in the left-right direction, and the lower seat plate rotates upward from the normal position with respect to the upper seat plate. A lock piece that rotates from an unlock position to a lock position in conjunction with displacement, and the lock piece when the lower seat plate is lifted in a state where the lock piece position is located at the lock position. A fixed locking piece that locks the A shutter apparatus according to claim.

In this shutter device, the upper seat plate and the lower seat plate can be connected by a single shaft member so that the lower seat plate is supported by the upper seat plate. No matter where you type, the link and lock pieces at the end of the seat will work. Therefore, the link piece and the lock piece can be provided only on one end of the seat plate. Therefore, the number of constituent parts and the number of assembling steps can be reduced, and the cost can be reduced.

The invention according to claim 2 of this application is the shutter device according to claim 1, wherein at the normal position in which the seat plate is rotated downward by its own weight ,
A shutter device characterized in that a shaft pivotally attached to the lower seat plate is configured to be positioned at substantially the same height as a rotation center axis of the lower seat plate. Since the central axis of rotation of the lock piece with respect to is displaced in the same direction as the protruding direction of the lock piece with the rotation of the lower seat plate, the vertical dimension of the seat plate is the same as that of the conventional device. The protrusion amount becomes larger than that of the conventional device. Therefore, the difference between the unlocked position and the locked position of the lock piece can be clarified, and it is possible to reliably lock the lock piece and to secure a sufficient gap between the lock piece and the lock piece.

The invention according to claim 3 of this application is the shutter device according to claim 1, wherein the locking piece is U-shaped.
It is made of one spring steel plate so that it has a mounting part ,
The U-shaped mounting portion faces downward of the wall of the guide rail.
Insert the end face in the thickness direction so that it is locked.
The shutter device is characterized in that it does not require a fixing tool such as a screw for fixing the locking piece to the guide rail, and the mounting is easy, so that the cost can be reduced.

The invention according to claim 4 of the present application is the shutter device according to claim 1, wherein the shutter device is movable up and down with respect to the one guide rail, but is restrained from displacement in the left-right direction. A guide piece that is combined with the upper seat plate and is relatively displaceable in the left-right direction but connected so as to move up and down integrally is provided inside the one guide rail, and the link piece is connected to the upper seat plate. wherein done by pivoted to the guide piece, the locking piece the locking piece a shaft movably is held in the lateral direction consolidated by the lower seating plate relative to said lower seat plate the link pieces <br The shutter device is characterized in that the lock device and the link device do not change in position even if the guide rail bends in the left-right direction due to improper installation. The smooth operation can be assured of.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an outline of a shutter device according to the invention of this application will be described. FIG. 1 is a view of a shutter device 10 applied to a window as seen from the indoor side.
As shown in FIG. 1, the shutter device 10 includes an electric motor 11
A shutter curtain 13 that is raised by being wound around a winding shaft 12 that is driven to rotate and that is lowered by being unwound from the winding shaft 12, and a guide that holds and guides the left and right side end portions of the shutter curtain 13 so that they can be raised and lowered, respectively. It has rails 14 and 15. 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 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. Etc.

When the opening operation button of the controller is temporarily pressed while the shutter curtain 13 is in the descending stroke end position or between the descending stroke end position and the ascending stroke end position, the controller rotates the electric motor 11 in one direction. Shutter shutter 13 and take-up shaft 12
The shutter curtain is raised by winding it up. Then, when the shutter curtain 13 moves up to the rising stroke end position, a rising stroke end position detection 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. Then, 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 at the rising stroke end position or between the rising stroke end position and the descending stroke end position, the controller rotates the electric motor 11 in the other direction. The shutter curtain 13 is drawn out from the winding shaft 12 to lower the shutter curtain. And
When the shutter curtain 13 descends to the end position of the descending stroke, an obstacle detection switch (not shown) installed in the guide rail 15 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, the guide rail 1
It is also possible to use an electric signal indicating the operation of a descending stroke end position detection switch (not shown) installed in the vehicle 5.

The seat plate 17 of the shutter curtain 13 interferes with obstacles while the controller is moving the shutter curtain 13 downward toward the descending stroke end position based on the operation of the closing operation button of the controller. When the switch is operated and an electric signal representing 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 descends to the descending stroke end position, the descending stroke end position detecting 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. When the input of the electric signal representing the operation of the lower stroke end position detection switch to the controller is interrupted (when the shutter curtain is forced to be raised from the outside) before is operated again, the shutter curtain The controller immediately actuates the electric motor 11 to rotate in the other direction in order to keep 13 at the end of the downward stroke.

Next, the details of the lock mechanism for preventing the shutter curtain 13 whose opening is fully closed from being forcibly raised from the outside will be described.

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

The upper seat plate 19 is made of an extruded molding material made of an aluminum material, and the light-weight and high-rigidity hollow prismatic portion 19a has an upper end side in which a bar 19 of a manual lock mechanism is housed. Is provided on the upper end side of the accommodating portion 19b, which is long in the left-right direction and is C for rotatably connecting to the slat directly above.
A shaft holding portion 19c having a V-shaped cross section is provided. An overhanging portion 1 that extends to the indoor side is provided on the lower end side of the hollow prismatic portion 19a.
9d is provided, and a shaft holding portion 19e that is long in the left-right direction and has a C-shaped cross section for rotatably connecting the lower seat plate 20 is provided at the tip of the projecting portion 19d. . Further, a locking portion 19f for restricting the lower seat plate 20 from rotating further downward from the normal position shown in FIG. 2 and for preventing intrusion of dust is provided on the outdoor side below the hollow prismatic portion 19a. Is provided. 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 ends of the upper seat plate 19 are held by the guide rails 14 and 14 so as to be lifted and lowered.

The lower seat plate 20 is made of an extruded molding material made of an aluminum material, and the shaft holding portion 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 left-right shaft portion 20b that is rotatably held by 19e is provided. Hollow prism 2
An engaging portion 20c that cooperates with the engaging 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 distance between the guide rails 14, 14 facing each other, and the left and right end portions of the lower seat plate 20 are not held by the guide rails 14 and.
It is located between the opposite sides of the guide rails 14, 14. Therefore, when no load is applied to the lower seat plate 20 in the upward direction, 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 in the normal position interferes with an obstacle to apply an upward load to the lower seat plate 20, or the lower seat plate 20 in the normal position causes the shutter curtain. When an upward load is applied to the lower seat plate 20 by contacting the lower frame member 29 of the opening opened and closed by 13, as shown in FIG. 3, the lower seat plate 20 is centered around the shaft portion 20b. Rotate upwards.

In order to ensure that the lower seat plate 20 rotates even when the lower side wall 20d of the hollow prismatic portion 20a interferes with the obstacle, the lower seat plate 20 is placed in the normal position with respect to the upper seat plate 19. In the occupying state, the lower side wall 20d is made to project almost directly below the shaft portion 20b, and the lower side wall 20d is provided with an inclination so that the lower side wall 20d descends as the distance from the shaft portion 20b increases.

Further, a shaft member in the left-right direction for operatively connecting with a lock piece described later can be displaced in the left-right direction in the vicinity of the corner on the upper side and the outdoor side of the hollow prismatic portion 20a of the lower seat plate 20. A shaft holding portion 20e for holding the shaft is provided.

FIG. 6 shows the other guide rail 1 of the seat plate 17.
It is the perspective view which looked at the end by the side of 4 from the indoor side. FIG. 7 is a diagram showing a relative relationship between the guide rail 14 and the seat plate 17, a guide piece described later, and the like. The guide piece 21 is movable up and down with respect to the guide rail 14 inside the guide rail 14, but is engaged so as to restrain displacement in the left-right direction, and is relatively displaced in the left-right direction with respect to the upper seat plate 19. It is possible, but they are connected so as to move up and down as a unit. One end of a link piece 22 is pivotally attached to the guide piece 21 by a horizontal shaft 23. Link piece 2 2
One end of the lock piece 24 is pivotally attached to the other end of the lock piece 24 by a pivot shaft 25 in the left-right direction, and the other end of the lock piece 24 is held by the shaft holding portion 20e of the lower seat plate 20 so as to be displaceable in the left-right direction. Shaft 26 is connected. The link piece 22 and the lock piece 24 occupy the positions shown in FIG. 4 when the lower seat plate 20 occupies the normal position with respect to the upper seat plate 19, but the lower seat plate 20 normally occupies the upper seat plate 19. Interlocking with the upward rotational displacement from the position, the rotational displacement is performed to the position shown in FIG. The position of the lock piece 24 in FIG. 4 is the unlock position, and the position of the lock piece 24 in FIG. 5 is the lock position.

As shown in FIGS. 4 and 5, the guide rail 14 is provided with a wall 14b having a downward end face 14a, and a locking piece 27 is attached to the wall 14a. The locking piece 27 is made of a spring steel plate, has a locking portion 27a that locks when the locking piece 24 occupying the lock position is lifted, and elastically moves the wall 14a in its 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 to the left and right with respect to the seat plate 17 by being moved up and down and by 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 each other. Therefore, the relative positional relationship between the link piece 22, the lock piece 24, and the locking piece 27 is not affected by the warp of the guide rail 14 in the left-right direction due to improper installation, and the link piece 22 and the lock piece 2 are not affected.
The rotation of 4 is always smooth, and the lock piece 24 is properly locked to the locking portion 27b of the locking piece 27.

A cover 28 is attached to the guide piece 21 to cover the link piece 22 and the lock piece 24.
With this cover 28, the link piece 22 and the lock piece 24
The invasion of dust to the sliding parts of is reduced.

The guide piece 21 may be omitted, and the link piece 22 may be directly pivotally attached to the upper seat plate 19. A switch actuation mechanism for actuating an obstacle detection switch is provided at an end portion of the seat plate 17 on the guide rail 15 side (obstacle detection is interlocked with rotation of the lower seat plate 20 relative to the upper seat plate 19). For operating the switch))) is installed.

[0029]

As described above, according to the invention of this application, it is possible to provide a shutter device which has a small number of constituent parts and a small number of assembling steps, and which is advantageous for cost reduction.
Further, it is possible to provide a shutter device in which the lock mechanism is reliably operated and the lock piece is properly locked to the locking piece even if the guide rail is bent in the left-right direction due to improper installation.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of a shutter device.

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

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

FIG. 4 is a diagram showing movements of a link piece and a lock piece and a locking piece.

FIG. 5 is a diagram showing movements of a link piece and a lock piece and a locking piece.

FIG. 6 is a perspective view showing how the link piece and the lock piece are attached to the seat plate.

FIG. 7 is a diagram showing a relative relationship between a guide rail and a seat plate, a guide piece, a link piece, a lock piece, and a locking piece.

[Explanation of symbols]

10: Shutter device 11 ... Electric motor 12 ... Winding shaft 13: Shutter curtain 14 ... Guide rail 15 ... Guide rail 17 ... seat plate 18 ... Slat 19 ... Upper seat plate 20 ... Lower seat plate 21 ... Guide piece 22 ... Link piece 24: Lock piece 27 ... Locking piece 27a ... Locking part 27b ... Mounting part 29 ... Lower frame member

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-11-350858 (JP, A) JP-A-10-121874 (JP, A) Actually open 1-157890 (JP, U) Patent 2678661 (JP, B2) (58) Fields investigated (Int.Cl. ⁷ , DB name) E06B 9/00

Claims (4)

(57) [Claims] 1. Left and right side end portions of a shutter curtain, which are raised by being wound on a winding shaft which is rotationally driven by a power driving means and lowered by being paid out from the winding shaft, are held by guide rails so as to be lifted and lowered. A shutter device having a lock mechanism for locking a seat plate to a guide rail in association with relative movement between a lower frame member of an opening closed by a shutter curtain and a seat plate provided at a lower end of the shutter curtain. At
The seat plate is connected to an upper seat plate having left and right end portions held up and down by the guide rails, and a lower plate connected to the upper seat plate so as to rotate in the vertical direction about a horizontal axis. With a side seat plate, when the lower seat plate comes into contact with the lower frame member and receives a load in the upward direction due to the lowering of the shutter curtain, the lower seat plate is against the upper seat plate,
The guide rail is rotatably displaced upward from its normal position rotated downward by its own weight, and is rotated in one of the guide rails about a shaft in the left-right direction with respect to the upper seat plate. The linked link piece is pivotally attached to the link piece so as to rotate about a horizontal axis, and is also connected to the lower seat plate so as to rotate about a horizontal axis. , A lock piece that rotates from the unlocked position to the locked position in conjunction with the lower seat plate being rotationally displaced upward from the normal position with respect to the upper seat plate, and the lock piece position is The shutter device, wherein a fixed locking piece that locks the lock piece when the lower seat plate is lifted in a state of being positioned at the lock position is provided on the guide rail. 2. The shutter device according to claim 1, wherein the lower seat plate pivots the lock piece and the lower seat plate at the normal position where the lower seat plate is rotated downward by its own weight.
Is configured to be positioned at substantially the same height as the rotation center axis of the lower seat plate. 3. The shutter device according to claim 1, wherein the locking piece is made of one spring steel plate so as to have a U-shaped mounting portion, and the U-shaped mounting portion is , Said guy
Insert the downward end face of the drail wall in the thickness direction
The shutter device is characterized by being locked . 4. The shutter device according to claim 1, wherein said one guide rail is movable up and down, but is engaged with said one guide rail so as to be constrained from displacement in the left-right direction, and with respect to said upper seat plate. Provided inside the one guide rail is a guide piece that is relatively displaceable in the left-right direction but is connected so as to move up and down, and the link piece is connected to the upper seat plate by connecting the link piece to the guide piece. The lock piece is pivotally attached, and the lock piece is connected to the lower seat plate by fixing to the lock piece a shaft that is held by the lower seat plate so as to be displaceable in the left-right direction. Shutter device.