JP2007002451A - Seat plate switch of shutter equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve designability of a lower end of a shutter curtain in a state in which the lower end is housed in a lintel section above an opening when the opening is fully opened, without deteriorating the obstacle detecting performance and fireproof performance of a seat plate switch. <P>SOLUTION: This seat plate switch comprises: a steel upper frame 9 which is provided at the lower end of the shutter curtain; a tape switch 1 which is provided in the upper frame; a steel lower frame 10 which is provided in such a manner as to be vertically movable with respect to the upper frame; and an operation means 12 which is provided in the lower frame so as to push the tape switch by making the lower frame move upward with respect to the upper frame. In the operation means 12 elastically deformable in a vertical direction, a plurality of pushing parts, which are provided at intervals in the longitudinal direction of the tape switch, are each equipped with a contact surface which is brought into local contact with the tape switch. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a seat plate switch of a shutter device, and preferably to a structure of an obstacle detection switch provided on a seat plate of a fireproof screen of a fireproof sheet shutter device.

In the fire-proof seat shutter, since it is necessary to provide an evacuation opening when the opening is fully closed, a walk-through system in which the evacuation opening is configured by forming a screen door that can be opened and closed is adopted. . In the walk-through system, the seat plate at the lower end of the fire screen also serves as the door frame under the screen door, so the seat plate height is kept as low as possible to ensure passage during evacuation. There is a need.

Here, it is necessary to provide a switch for detecting an obstacle on the seat plate, but in order to keep the seat plate height low, a structure in which a tape switch for detecting contact with an obstacle is attached to the bottom surface of the seat plate. (The detection switch itself comprising a tape switch is disclosed in Patent Document 1). Since the tape switch itself is made of resin and is not preferable in terms of fire prevention performance, fire resistance is ensured by covering the tape switch portion with a fireproof sheet similar to the fireproof screen.

However, since the lower end of the fireproof screen is covered with a fireproof sheet, there is a problem in that the lower end of the fireproof screen does not look good when the opening is fully opened in the lintel portion above the opening. Further, in the seat plate switch configured by covering the tape switch with a fireproof sheet, the fireproof sheet has flexibility, so the seat plate switch itself has flexibility, and the seat plate switch has an obstacle. When the tape contacts, the tape switch is locally pressed, and an obstacle detection signal is generated. In order to detect an obstacle with a tape switch, it is advantageous to press the tape switch locally. Therefore, the tape switch can be operated without using a fireproof sheet without deteriorating the obstacle detection performance of the seat plate switch. In order to construct the seat plate switch, it becomes a problem how to press the tape switch locally.
Utility model registration No. 2539015

The present invention improves the design of the lower end of the shutter curtain in a state where it is housed in the lintel above the opening when the opening is fully open, without reducing the obstacle detection performance and fire prevention performance of the seat plate switch. It is intended. Another object of the present invention is to provide a seat plate switch having a configuration capable of locally pressing a tape switch without using a fireproof sheet.

The seat plate switch of the shutter device adopted by the present invention is a steel upper frame provided at the lower end of the shutter curtain, a tape switch provided in the upper frame, and a steel provided so as to be movable up and down with respect to the upper frame. A lower frame, and an operating means that is provided in the lower frame and presses the tape switch by moving the lower frame upward with respect to the upper frame, the operating means being in the length direction of the tape switch A plurality of pressing portions are provided at intervals, and each pressing portion includes a contact surface that locally contacts the tape switch.

In a preferred aspect, the actuating means is elastically deformable in the vertical direction. In order to make the actuating means elastically deformable in the vertical direction, at least a part of the actuating means may be made of an elastic member. Examples of such elastic members include springs such as leaf springs and coil springs, and elastic rubber. The actuating means may be composed of a plurality of members or a single member. In one embodiment, the actuating means is composed of a plurality of actuating bodies, the plural actuating bodies are arranged at intervals in the length direction of the tape switch, and each actuating body includes at least one pressing portion. ing. In another aspect, the actuating means is composed of one actuating body extending in the length direction of the tape switch, and the actuating body is formed with a plurality of pressing portions at intervals in the length direction of the tape switch. Has been. Although the elastic portion and the pressing portion constituting the operating means may be integrally formed from one member, in one aspect, the operating means is supported by the elastic member that is elastically deformable in the vertical direction and the elastic portion. And a pressing member. In one preferable aspect, the said press part is comprised from the rocking | fluctuation board extended in the horizontal width direction of a tape switch.

In one preferred embodiment, the upper frame of the seat plate switch is attached to the lower surface of the seat plate at the lower end of the shutter curtain. Further preferably, the shutter device is a fireproof seat shutter device, the shutter curtain is provided with a screen door, and the seat plate at the lower end of the shutter curtain constitutes a door frame below the screen door. ing. In the embodiment described later, a seat plate switch attached to the lower surface of an existing seat plate is disclosed, but the upper frame and the lower frame of the seat plate switch according to the present invention may constitute the seat plate at the lower end of the shutter curtain.

(1) The height of the seat switch can be kept low by using a tape switch. In particular, when the seat plate to which the upper frame is fixed constitutes the door lower frame of the screen door, good passability can be ensured.
(2) Since the tape switch is covered with the upper and lower steel frames, it is superior in design when compared to a conventional sheet when the opening is fully open, and is made of steel when the opening is fully closed. Since the frame body protects the tape switch, fire resistance is also good.
(3) Since the actuating means has a plurality of pressing portions at intervals in the length direction of the tape switch, it will press the tape switch locally, and the tape can be more reliably secured with a smaller force. Can be detected by a switch. On the other hand, when the actuating means is elastically deformable in the vertical direction, the tape switch is prevented from being damaged due to an excessive pressing force locally.
(4) The actuating means can be elastically deformed in the vertical direction, so that the height of the seat plate switch when the opening is fully closed can be kept low.
(5) In the case where the pressing part is composed of a swinging plate extending in the lateral width direction of the tape switch, even if an obstacle hits against the seat plate switch (striking from an oblique direction), The tape switch can be surely pressed.

FIG. 1 is an overall front view of a fire-proof seat shutter device to which a seat switch according to the present invention is applied. A guide rail 1 is erected on the side of a predetermined opening in the building, and a shutter case 2 is provided above the opening, and the shutter case 2 has an opening width direction. A take-up shaft 3 is provided. The winding shaft 3 is connected to the upper end of a fire screen 4 that closes the opening in the event of a fire. The fire screen 4 is normally housed in the shutter case 2 while being wound around the wind shaft 3. And the opening is fully open.

At normal times, the rotation of the winding shaft 3 is regulated by a brake means (not shown). In the event of a fire, the brake means is released by an automatic closing device that has received a disaster prevention signal from a smoke detector (not shown) so that the winding shaft 3 can rotate, and the fire screen 4 has both ends connected to the guide rail 1. While being guided, it descends by its own weight and fully closes the opening. The fireproof screen 4 that has been lowered rotates the winding shaft 3 by the opening / closing machine 5 and is wound around the winding shaft 3 to fully open the opening.

The fire screen 4 is provided with an evacuation opening, and the main body sheet 40 of the fire screen 4 is provided with a screen door 6 for opening and closing the evacuation opening so that the screen door 6 is opened. The fireproof screen 4 is configured to form an evacuation opening.

The fireproof screen 4 is composed of a main body sheet 40 and a main body seat plate 7 provided at the lower end of the main body sheet 40. The screen door 6 includes a door seat 60 and a door seat plate 8 provided at the lower end of the door seat 60. Both the main body sheet 40 and the door sheet 60 are made of a fireproof sheet such as silica cloth.

The screen door 6 is sewn to the main body sheet 40 at the door bottom side of the door sheet 6, and the main body sheet 40 is formed such that the door tip side of the door sheet 60 forms an overlapping portion with the main body sheet 40. It is attached to. When the opening is closed, the overlapping portion between the door sheet 60 of the screen door 6 and the main body sheet 40 of the fireproof screen 4 prevents a communication hole from being formed between the fire side and the non-fire side. .

A seat plate 7 is provided at the lower end of the fire screen 4 and extends over the entire width. The seat plate 7 has a substantially inverted T-shaped cross section from a rising portion 70 composed of a vertical surface portion and a flat portion 71 composed of a horizontal surface portion. The seat plate 7 is connected to the lower end of the main body sheet 40 via the rising portion 70.

The rising portion 70 is cut out at a portion corresponding to the lower end of the screen door 6, and therefore the seat plate 7 cuts out a portion corresponding to the flat portion 71 extending to the entire width of the main body sheet 40 and the screen door 6. It is formed from a rising portion 70 which is missing. That is, with respect to the screen door 6, the flat part 71 of the seat plate 7 constitutes a lower door frame.

At the lower end of the screen door 6, a door seat plate 8 is provided separately from the seat plate 7. The door seat plate 8 has a plate-like rising portion, and the rising portion is composed of a vertical surface portion, like the rising portion 70 of the seat plate 7. The door portion seat plate 8 is disposed corresponding to the notch portion of the rising portion 70 of the seat plate 7 described above. One end of the door seat plate 8 (the end corresponding to the door end side of the screen door 6) is a free end, while the other end of the door seat plate 8 (the door bottom side of the screen door 6). Is connected to the rising portion 70 of the seat plate 7 via an inclined hinge 80 so as to be rotatable.

A seat plate switch constituting an obstacle detection switch is provided on the lower surface of the flat portion 71 of the seat plate 7 at the lower end of the fireproof screen 4. The seat plate switch includes a steel upper frame 9, a steel lower frame 10 movable up and down with respect to the upper frame 9, a tape switch 11 provided on the upper frame 9, and an operating body 12 provided on the lower frame 10. , And the lower frame 10 comes into contact with the obstacle and moves upward relative to the upper frame 9, so that the operating body 12 provided on the lower frame 10 presses the tape switch 11 to obstruct the obstacle. Is detected. The tape switch 11 is electrically connected to the cord 130 of the cord reel 13 provided in the upper part of the opening, and the detection signal by the seat plate switch is transmitted to the automatic closing device via the cord 130 of the cord reel 13, When the automatic closing device receives the obstacle detection signal, the brake means is returned to restrict the rotation of the winding shaft 3 to stop the descent of the fire screen 4.

The upper frame 9 has an upper surface portion 90 and opposing side surface portions 91 formed integrally with the upper surface portion 90, and horizontal pieces 92 are formed at both ends in the length direction of the side surface portion 91. The hat has a side view. The horizontal piece 92 may be formed through the upper frame 9 in the length direction.

The lower frame 10 includes a lower surface portion 100, an opposing side surface portion 101 integrally formed with the lower surface portion 100, and a horizontal piece 102 integrally formed in the length direction of the side surface portion 101.

The horizontal piece 102 of the lower frame 10 is placed on the horizontal piece 92 of the upper frame 9, and the horizontal piece 102 is locked to the horizontal piece 92, so that the lower frame 10 can be suspended from the upper frame 9. The lower frame 10 is movable up and down with respect to the upper frame 9 within the height dimension of the lower frame 10 (height of the side surface portion 101). Accordingly, the lower frame 10 is suspended from the upper frame 9 while the fire screen 4 is being lowered. When the lower frame 10 comes into contact with an obstacle, the lower frame 10 is relative to the upper frame 9. The operating body 12 provided on the lower frame 10 moves upward and presses the tape switch 11 provided on the upper frame 9.

The movement of the upper frame 9 and the lower frame 10 in the length direction is restricted by the shift preventing members 14 provided at both ends in the length direction. Specifically, the stopper member 14 is fixed to the end of the lower frame 10 in the length direction, and the piece 140 formed at the end of the stopper member 14 contacts the horizontal piece 92 of the upper frame 9. The upper frame 9 is not displaced in the length direction with respect to the lower frame 10.

The upper frame 9 is fixed to the lower surface of the flat portion 71 of the seat plate 7 via the upper surface of the upper surface portion 90, and the lower surface of the upper surface portion 90 has a long shape extending in the length direction of the upper frame 9. The tape switch 11 is provided. The tape switch 11 includes a tape switch body and a frame body 110 on which the tape switch body is mounted, and is fixed to the lower surface of the upper surface portion 90 of the upper frame 9 via the frame body 110. As is apparent from the figure, the tape switch main body projects downward from the frame 110.

On the upper surface of the lower surface portion 100 of the lower frame 10, there is provided an operating means that can be elastically deformed in the vertical direction and has a plurality of pressing portions at intervals in the length direction of the tape switch 11. In the example shown in the figure, the actuating means is composed of a plurality of actuating bodies 12 disposed on the lower frame 10 with a gap in the length direction of the tape switch 11. The operating body 12 is elastically deformable in the vertical direction and includes a pressing portion for contacting and pressing the tape switch 11. A plurality of pressing portions are arranged at intervals in the length direction of the tape switch 11 and have a small area contact surface that locally contacts the tape switch 11. Can be pressed locally and obstacle detection can be performed more reliably.

The main body of the actuating body 12 is composed of a leaf spring, a rising portion composed of left and right inclined surfaces 120, a mounting piece 121 extending horizontally from the lower ends of the left and right inclined surfaces 120, left and right It consists of the horizontal top part 122 which connects the upper end of the inclined surface 120. The inclined surface 120 is formed in a tapered shape having a gradually narrower width from the lower end toward the upper end, and the top portion 122 is narrower than the inclined surface 120. A main body made of a leaf spring is provided in the lower frame 10 in such a manner that it can be deformed in the vertical direction.

The top portion 122 is provided with a swing plate 123 that constitutes a pressing portion that presses the tape switch 11. The swing plate 123 includes a main body 124 and a mounting piece 125 that is mounted on the back surface of the main body 124. The main body 124 is a longitudinal plate member that extends in the lateral width direction of the tape switch 11 and has a length slightly larger than the lateral width dimension of the tape switch 11 (including the frame body 110). The upper surface of the main body 124 constitutes a contact surface that contacts the tape switch 11. The mounting piece 125 is a longitudinal member having the same length as that of the main body 124 as a whole, but has a concave portion 126 formed at a central portion in the length direction.

The swing plate 123 is attached to the mounting piece 125 so that the top portion 122 is sandwiched from the lower side while the main body 124 is placed on the top portion 122, and the main body 124 and the mounting piece 125 are fixed to each other. In the state where the top portion 122 is received in the space S between the concave portion 126 of the mounting piece 125 and the mounting piece 125, the mounting body 125 is attached to the operating body body constituted by a leaf spring.

The space S that receives the top 122 of the body of the actuating body 12 is sized to receive the top 122 of the body with a clearance. Specifically, as shown in FIG. 9, the space S has a dimension larger than the outer shape of the top portion 122 in the vertical direction and the horizontal width direction, and is a swing extending in the horizontal width direction of the tape switch 11. The moving plate 123 is swingable in the vertical direction with respect to the top portion 122. Further, the clearance between the top portion 122 and the space S is set to a size that restricts excessive swinging or turning of the swing plate 123. That is, when the rocking plate 123 is rocked appropriately in the space S, the rocking plate 123 comes into contact with the surface portion forming the space S, and further rocking is restricted. Accordingly, as shown in FIGS. 4 and 5, when an obstacle hits the lower frame 10 from an oblique direction and the lower frame 10 moves upward while tilting with respect to the upper frame 9, the lower frame 10 is tilted. One end of the swinging plate 123 that swings in contact with the frame body 110 of the tape switch 11, and at this time, the top portion 122 contacts the lower surface of the main body 124 of the swinging plate 123, thereby further swinging the swinging plate 123. The movement is restricted (FIG. 4), and the swing plate 123 presses the tape switch 11 while swinging upward with the contact point as a fulcrum (FIG. 5). Further, a step portion 122A is formed at the boundary between the inclined portion 120 and the top portion 122 of the main body of the operating body 12, and the movement of the swing plate 123 in the length direction of the tape switch 11 is restricted. In one preferred embodiment, the upper frame 9 and the lower frame 10 are divided in the length direction of the tape switch 11 as shown in FIG. A seat plate switch unit is formed from an operating portion 12 provided between both ends of the frame 9 and the lower frame 10, and the seat plate switch unit is connected in the length direction of the tape switch 11. Each seat plate switch unit is configured to be able to operate independently, thereby enabling better obstacle detection.

13 to 16 show another embodiment of the present invention. A seat plate switch constituting an obstacle detection switch is provided on the lower surface of the seat plate 700 at the lower end of the shutter curtain. The seat plate switch includes a steel upper frame 9, a steel lower frame 10 movable up and down with respect to the upper frame 9, a tape switch 11 provided on the upper frame 9, and an operating body 12 provided on the lower frame 10. , And the lower frame 10 comes into contact with the obstacle and moves upward relative to the upper frame 9, so that the operating body 12 provided on the lower frame 10 presses the tape switch 11 to obstruct the obstacle. Is detected. The basic configuration of the embodiment is the same as that of the above-described embodiment except for the configuration of the seat plate 700, and the same members are denoted by the same reference numerals. It is possible to divert the above description.

INDUSTRIAL APPLICABILITY The present invention can be used for a seat plate switch provided on the lower surface of a seat plate of a fire protection sheet shutter device.

It is a whole front view of a fireproof sheet shutter. It is sectional drawing of the lower end part of the sheet shutter for fire prevention, and shows the state by which the lower frame was suspended with respect to the upper frame fixed to the seat plate lower surface. In the figure, sheets are omitted. It is sectional drawing of the lower end part of a fire prevention sheet shutter, and shows the state (at the time of a horizontal operation | movement) where the lower frame moved up horizontally with respect to the upper frame from the state of FIG. FIG. 3 is a cross-sectional view of a lower end portion of a fire protection sheet shutter, showing a state where the lower frame hits an obstacle and moves upward (tilts) with respect to the upper frame from the state of FIG. . FIG. 4 shows a state where the tape switch is pressed (at the time of one-side operation) from the state of FIG. It is a figure which shows the lower end part of the screen door base end side of the fireproof seat shutter, the left figure shows the state where the lower frame is suspended from the upper frame fixed to the lower surface of the seat plate, the right figure shows the right From the state shown in the figure, a state in which the lower frame is moved horizontally relative to the upper frame is shown. It is a figure which shows the component of the frame of a detection part, a left figure is an upper frame, a center figure is a slip prevention member, and a right figure is a lower frame. About the upper frame and the lower frame, a part in the longitudinal direction is partially omitted. It is the top view and side view of an action body. It is a side view of the rocking | swiveling plate in the state which received the top part of the action body main body. It is a side view of the action body which shows rocking | fluctuation of the rocking | swiveling plate with respect to an action body main body. It is a partial front view which shows a shutter curtain lower end part. It is the elements on larger scale of FIG. It is sectional drawing of the lower end part of the sheet shutter which concerns on another Example, and shows the state by which the lower frame was suspended with respect to the upper frame fixed to the seat plate lower surface. It is sectional drawing of the lower end part of a sheet shutter, and shows the state (at the time of horizontal operation) where the lower frame moved up horizontally with respect to the upper frame from the state of FIG. It is sectional drawing of the lower end part of a sheet shutter, and shows the state (immediately before the operation | movement by one side contact) from the state of FIG. 13 where the lower frame hits an obstacle and moved upward (tilted) with respect to the upper frame. FIG. 15 shows a state where the tape switch is pressed (at the time of one-side operation) from the state of FIG.

Explanation of symbols

7,700 Seat plate 9 Steel upper frame 10 Steel lower frame 11 Tape switch 12 Actuator 123 Swing plate

Claims (5)

A steel upper frame provided at the lower end of the shutter curtain;
A tape switch provided in the upper frame;
A steel lower frame provided to be movable up and down with respect to the upper frame;
An operating means provided in the lower frame, the upper frame moving upward relative to the upper frame, and pressing the tape switch;
Have
The actuating means has a plurality of pressing portions at intervals in the length direction of the tape switch, and each pressing portion includes a contact surface that locally contacts the tape switch.
Seat plate switch for shutter device.   The seat plate switch according to claim 1, wherein the operating means is elastically deformable in a vertical direction.   The said pressing part is a seat board switch in any one of Claims 1, 2 comprised from the rocking | fluctuation board extended in the horizontal width direction of a tape switch.   The seat frame switch according to any one of claims 1 to 3, wherein an upper frame of the seat plate switch is attached to a lower surface of the seat plate at a lower end of the shutter curtain. The shutter device is a fireproof sheet shutter device,
The shutter curtain is provided with a screen door,
The seat plate at the lower end of the shutter curtain constitutes the lower door frame of the screen door,
The seat board switch according to claim 4.

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