JP3148106U - Upper manual shutter opening device - Google Patents

Abstract

A shutter opening device that allows an operator to easily open an upper manual shutter opening / closing device that descends by its own weight above the opening of a building without causing the operator to sneak into the back of the ceiling. obtain. A flexible shaft 9 having a length reaching from the ceiling of the building to the floor surface is connected to a switch of an upper manual shutter that descends by its own weight above the opening of the building, and is stored in the ceiling. A connector socket 10 is provided at the lower end of the flexible shaft so that external power can be detachably attached. By connecting this connector socket to an externally operated portable electric hoist 11, the shutter curtain of the upper manual shutter is moved downward. It is possible to wind up the power. [Selection] Figure 5

Description

  The present invention relates to a shutter opening device that can quickly and smoothly wind up a shutter curtain in an upper manual shutter device.

  In a commercial facility such as a department store or a large shopping store, a fire shutter called an upper manual type is sometimes provided around a staircase, an escalator, or the like in order to partition it from other spaces. The fire shutter is normally opened, and the shutter brake is released in the event of an emergency such as a fire, and is closed by a descent due to its own weight. Since such a fire-proof shutter is not normally opened and closed, an operator manually rotates the open / close device to wind the shutter during inspection and the like as will be described later. That is, install a manual switch in the back of the ceiling or in the shutter case, insert a handle for manual operation into the manual switch, or rotate the manual switch using the provided manual chain to wind up the shutter, Closing is performed by the weight drop of the shutter by releasing the brake.

Therefore, when opening the shutter curtain at the time of inspection work, emergency, etc., the upper manual shutter device opens the inspection port provided on the ceiling of the building by assembling the stepladder, ladder, or scaffold, and this inspection port. In this state, at least the upper body of the operator is infiltrated into the back of the ceiling, and in this state, the handle for manual operation is provided and removed from the installation place, fitted into the switch, and the output rotating shaft is rotated. Since the shutter chain is rolled up by dropping the stored manual chain from the inspection port and pulling it continuously, the hoisting operation is not easy.
Since the upper manual shutter opening / closing device is usually equipped with a reduction gear (brake and speed governor), the shutter curtain can be rolled up only about a few millimeters per rotation of the handle. Therefore, it takes a lot of labor and time to change the shutter curtain from the closed state to the fully open state. As a result, for example, in the case of equipment in a commercial facility, if the shutter is lowered due to some reason before the start of business or during business, the business will be hindered. It is desired to wind up the curtain quickly and smoothly.

Therefore, an operation box is provided on the lower side wall surface of the opening of the building, and a rotation transmission member such as a flexible shaft or a roller is interposed between the shutter switch and the operation box, and the handle is inserted into the handle fitting shaft of the operation box. There is one that allows manual opening of the shutter by transmitting rotational torque to the output shaft of the switch (Patent Document 1).
In addition, a connecting portion for detachably connecting the operator's portable electric drill is provided on the handle fitting shaft of the operation box so that the shutter curtain can be powered up from below with the connected portable electric drill. Some have also been proposed (Patent Documents 2 and 3).

  However, in the prior art, it is necessary to embed a flexible shaft that interlocks the shutter switch and the operation box in the wall of the building, or to install an operation box in which a rotation transmission member such as a roller is arranged. If there are multiple shutters, one set is required for each shutter. In addition, the flexible shaft has a minimum bending dimension, and if the number of bends is large, the transmission efficiency of the power is reduced compared to the case where it is used in a straight line, so securing the flexible shaft embedment path is extremely important, but the design is easy. It takes a lot of man-hours. And replacement when the flexible shaft was broken was difficult.

Japanese Utility Model Publication No. 62-9963 JP 08-121059 A Japanese Utility Model Publication No. 6-10596

  This device has been made to solve the above-mentioned problems.When the shutter curtain is opened by an open / closed upper manual shutter opening / closing device during inspection work or in an emergency, the operator can An object of the present invention is to provide a shutter opening device that can be easily opened from the floor without intruding into the floor.

  In the opening device according to claim 1 of the present invention, a flexible shaft having a length reaching from the ceiling of the building to the floor is connected to an open / close device of the upper manual shutter that descends by its own weight above the opening of the building. By installing a connector socket part that can be detachably connected to the lower end of the flexible shaft, and connecting the connector socket part to an externally operated portable electric hoist, The shutter curtain of the manual shutter can be powered up from below.

  According to a second aspect of the present invention, there is provided an opening device in which a flexible shaft is connected to an open / close device of an upper manual shutter that descends by its own weight above the opening of a building. By providing a connector socket part that can removably connect power, and connecting a flexible shaft integrated with the external operation type portable electric hoist to the connector socket part, the shutter curtain of the upper manual shutter The power can be hoisted from below.

  The opening device according to claim 3 of the present invention is characterized in that a one-way clutch is interposed between the switch and the flexible shaft, and the rotation direction of the switch is set only in the shutter opening direction. This is a shutter opening device. The opening device according to claim 4 is configured such that the externally operated portable electric hoist is movable with a caster at the bottom, and a control panel, a start switch, and an external device are connected to the power circuit of the hoist. It is characterized by having a power outlet or an emergency battery.

  The external operation type portable electric hoist further includes an upper limit switch for detecting a shutter curtain seat plate which is detachable from the guide rail. The limit switch is installed as necessary, and it is incorporated as a switch to prevent over-winding of the shutter curtain so as to be integrated with the power supply circuit of the hoisting machine. It is connected so that the power supply of the hoisting machine is cut off when it reaches the position. The guide rail is usually of a wall-embedded type and an exposed type, but the limit switch can be attached to and detached from the guide rail with a mounting bracket or the like so that it can be attached to both.

  According to this device, the shutter curtain of the upper manual shutter is connected to the externally operated portable electric hoist on the floor by a flexible shaft to the upper manual shutter switch provided above the opening of the building. Since the power can be hoisted from below, when the shutter is closed during inspection work or in an emergency, there is no unstable work on the scaffolding or stepladder when the operator releases the shutter. It is possible to easily and quickly rotate the output rotation shaft of the switch via the flexible shaft in the shutter opening direction through the flexible shaft without winding up the mouth and infiltrating into the ceiling. There is an effect that can be done.

Next, an embodiment of the invention will be described with reference to the drawings.
1 is a front view of an upper manual shutter showing an embodiment of the present invention, FIG. 2 is a sectional view of the same, FIG. 3 is a sectional view of a shutter case, and FIGS. 4 and 5 are flexible to the shutter opening / closing device of the present invention. It is explanatory drawing of the state which connected the external operation type portable hoisting machine via the shaft.

  The shutter shown in FIG. 1 is an upper manual shutter that descends by its own weight above the opening of a building. A pair of left and right guide rails 1 disposed on both sides of the opening, a bearing bracket 19 provided on the upper part of these guide rails 1, a shutter curtain (opening / closing body) 3 for raising and lowering between the two guide rails 1, An opening / closing device 4 with a reduction gear (see FIG. 2) disposed on the bearing bracket 19 and driving the shutter curtain 3 up and down is provided. An inspection opening 7 is formed in the ceiling 6 of the building.

  The shutter curtain (opening / closing body) 3 of the shutter is configured by connecting slats. More specifically, the shutter curtain 3 is wound and unwound by a winding shaft 5 that is disposed on the bearing bracket 19 and is rotationally driven by the opening / closing machine 4. As described above, the opening / closing machine 4 includes a brake mechanism and a speed adjusting mechanism (not shown) so as to brake the rotation of the output rotation shaft of the opening / closing machine.

  A flexible shaft 9 as a rotational power transmission member is connected to the other end portion of the output rotation shaft of the opening / closing machine 4 via a one-way clutch 8. The flexible shaft 9 is stored in the ceiling, and a connector socket portion 10 is provided at the lower end of the flexible shaft so that external power can be detachably connected. By connecting an external operation type portable electric hoist 11 described later to the connector socket part 10, the shutter curtain of the upper manual shutter can be powered from below.

  Note that the flexible shaft 9 has a configuration of being stored in the ceiling (FIG. 4) or a configuration of being fixed to the ceiling integrally (FIG. 5). The shutter can be stored in the ceiling (FIG. 2) or in the shutter case (FIG. 3).

In the case of the type stored in the ceiling, it is preferable to prepare a flexible shaft 9 having a length that reaches the floor surface by hanging from the back of the ceiling of the building in advance and placing it at the corner of the ceiling.
In use, the flexible shaft is dropped from the inspection port 7, and a connector socket 10 provided at the lower end of the shaft is connected to an externally operated portable electric hoist 11 disposed near the upper manual shutter.
On the other hand, when the flexible shaft is fixed to the ceiling or the shutter case, the insertion port of the connector socket portion 10 connected to the lower end of the flexible shaft 9a connected to the output rotation shaft of the switch 4 is directed to the floor surface. Are installed downward at appropriate positions on the ceiling and the case.
The auxiliary flexible shaft 9b or 9c prepared separately is connected to the connector socket portion 10 fixed to the ceiling or the like, and is connected to the external operation type portable electric hoist 11 brought from outside to connect the shutter curtain 3 It enables power hoisting.

  The auxiliary flexible shaft 9c may be provided integrally with the electric hoist 11 of the present invention (FIG. 6).

Next, the configuration of the portable hoisting machine 11 will be briefly described as shown in FIGS. 4 and 5, and provided with a stopper 17 and a caster 18 on the bottom of the machine base so that it can move at least on the floor. Yes.
The hoisting machine has a control panel 12, a start switch 13, an external power outlet 15, an emergency battery 14, and a shutter curtain seat plate upper limit switch 16 in the power circuit.

The seat plate detection upper limit switch 16 is attached to a required position of the guide rail 1 as a switch for preventing the shutter curtain from being overwound when the shutter curtain is wound, and is integrally connected to the power circuit of the hoisting machine. By incorporating in this way, when the seat plate of the shutter curtain is raised to a predetermined position, it is connected to the control panel 12 of the hoisting machine 11 so that the power supply of the hoisting machine is cut off.
The guide rail 1 includes a wall-embedded type (A) and an exposed type (B, C) as illustrated in FIG. The limit switch 16 can be attached to and detached from the guide rail 1 by means of a mounting bracket, a magnet or the like so that it can be attached to either of them.

It is a front view of an upper manual shutter. It is sectional drawing of FIG. It is sectional drawing of a shutter accommodation. It is explanatory drawing of the state which connected the external operation type portable hoisting machine via the flexible shaft by Embodiment 1 of this invention. It is explanatory drawing of the state which connected the external operation type portable hoisting machine via the flexible shaft by Embodiment 2 of this invention. It is explanatory drawing of the state which connected the portable hoisting machine via the flexible shaft by Embodiment 3 of this invention. It is use explanatory drawing of the upper limit switch for a seat board detection integrally connected with the portable winding machine of this invention. It is a connection diagram of a switch.

Explanation of symbols

1 Guide rail 2 Shutter case (shutter compartment)
3 Shutter curtain (opening and closing body)
4 Opening and closing machine 5 Winding shaft 6 Ceiling
7 Inspection port 8 One-way clutch 9 Rotational force transmission member (flexible shaft)
DESCRIPTION OF SYMBOLS 10 Connector socket part 11 Portable electric hoist 12 Control panel 13 Start switch 14 Built-in battery 15 Outlet for external power supply 16 Seat plate detection limit switch 17 Stopper 18 Caster

Claims (5)

A flexible shaft having a length reaching the floor surface from the ceiling of the building is connected to the opening and closing machine of the upper manual shutter that descends by its own weight above the opening of the building, and the flexible shaft is stored in the ceiling. A connector socket that can be detachably connected to external power is provided at the lower end of the shutter, and the connector socket is connected to an externally operated portable electric hoist so that the shutter curtain of the upper manual shutter can be powered from below. An upper manual shutter opening device characterized by being made possible. A flexible shaft is connected to the upper manual shutter opening and closing machine that descends by its own weight above the opening of the building, and a connector socket portion that can removably connect the flexible shaft and external power is provided on the shutter case or ceiling; and The upper part is characterized in that the shutter curtain of the upper manual shutter can be powered from below by connecting a flexible shaft integrated with the external operation type portable electric hoisting machine to the connector socket part. Manual shutter opening device. The upper manual shutter opening device according to claim 1 or 2,
An upper manual shutter opening device characterized in that a one-way clutch is interposed between the opening / closing device and the flexible shaft, and the rotation direction of the opening / closing device is set only in the shutter opening direction. The upper manual shutter opening device according to any one of claims 1 to 3, wherein the external operation type portable electric hoist has a caster at the bottom and is movable. An upper manual shutter opening device comprising a control panel, a start switch, an external power outlet or an emergency battery in a power circuit of the machine. 4. The upper manual shutter opening according to claim 3, wherein the external operation type portable electric hoist further includes an upper limit switch for detecting a shutter curtain seat plate that is detachable from the guide rail. apparatus.

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