JP2534857Y2 - Manual brake release device for electric motor for opening and closing shutter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual brake release device for an electric motor for opening and closing a shutter.

[0002]

FIG. 3 is a front view showing a conventional electric winding shutter, FIG. 4 is a schematic vertical sectional side view of FIG. 3, and FIG. 5 is an enlarged explanatory view of a shutter opening / closing driving device in FIG. In the drawing, reference numeral 1 denotes a pair of left and right guide rails arranged upright on both sides of a shutter opening / closing opening, and these guide rails 1 are formed of a U-shaped member having a vertically long opening on the opposite surface side. A box-shaped panel storage section 2 is provided on the upper part of the guide rail 1. An electric motor 3 for opening and closing the shutter having a brake 3A (see FIG. 5) and a winding shaft 4 driven forward and reverse by the electric motor 3 are housed and arranged in the panel housing part 2. I have. Accordingly, the winding and rewinding of the shutter curtain 5 is performed by the forward and reverse rotation of the winding shaft 4, whereby the shutter curtain 5 is driven up and down and opened and closed between the guide rails 1.

Next, the electric motor 3 and the winding shaft 4
The output sprocket 31 is directly and integrally fitted to the output shaft 30 of the electric motor 3, and the output sprocket 31 side of the electric motor 3 is connected to one side of the panel housing 2. Of the bracket 2a. An input sprocket 41 corresponding to the output sprocket 31 is integrally fitted to one end of the winding shaft 4, and the winding shaft 4 is
It is supported by both side brackets 2 a of the panel storage section 2. The transmission chain 6 is meshed and wound around the output sprocket 31 on the electric motor 3 side and the input sprocket 41 on the winding shaft 4 side. Accordingly, the rotation output of the electric motor 3 is transmitted to the winding shaft 4 via the output sprocket 31 → the transmission chain 6 → the input sprocket 41.
Is transmitted to

Here, the brake 3A of the electric motor 3 is used.
The device automatically interlocks the electric motor 3 when the start switch of the electric motor 3 is off, and releases the interlock when the start switch is turned on.

[0005]

[Devised It is an object of the conventional electric winding shutter is constructed as described above, because not provided any brake manual release means of the shutter opening and closing driving electric motor 3, for example, emergency fire etc. Blackout at time
In this case , even if the shutter curtain 5 is artificially opened, the brake 3A of the electric motor 3 remains applied, and the shutter curtain cannot be opened.

[0006] This invention has been made to solve the above problems, so as to be easily and reliably opened by manual operation of the brake of the electric motor of the shutter opening and closing drive in the event of a power failure, depending on which , and an object thereof is to provide a brake manual release device shutter opening and closing electric motor to be able to artificially open and close the shutter curtain when power failure.

[0007]

SUMMARY OF THE INVENTION A manual brake release device for an electric motor for opening and closing a shutter according to the present invention is provided in the event of a power failure.
Brake that brakes the motor when power is
And a brake release lever to release the rake.
A pair of left and right
Driving the shutter curtain up and down between the idle rails
Brake release for electric motor for opening and closing shutter
A brake manual release device for performing an operation,
Connect the brake release wire to the brake release lever
First split to relieve excessive tension on rake release wire
And the guide rail side.
Release the brake at a position where manual brake release operation is possible
Set up a French drop for operation and operate this French drop
Connect the brake release wire to the lever, and
Use the lance dropping operation lever to release the brake release wire
By releasing the brakes by pulling the French
The second split to reduce the load on the drop operation lever
It is provided with a ring .

[0008]

In the brake manual release device for the electric motor for opening and closing the shutter according to the present invention, when the operating lever of the French drop is rotated, the brake release wire connected to the brake release lever of the electric motor via the first spring. Is pulled, the brake of the electric motor is released. Therefore, at the time of power outage, the shutter curtain manually easily can be opened and quickly accommodate evacuation like during fire. Note that the order of certain French working stroke of the drop is, than the concatenation of the brake release wire directly to the brake release lever, the full
The operating stroke of the lance drop is the lever for releasing the brake.
If the brake release wire is longer than the operating stroke of the brake, the brake release wire may be cut when the French release lever is operated, but in this invention, the excessive tension acting on the brake release wire by the French release lever operation is considered. Because the force is relieved by the first spring,
The accident of cutting the brake release wire can be prevented. Also, by providing the first spring,
Brake release lever, brake release wire,
Make sure the load applied to the lance falls within a certain range
Makes it easy to set the strength, shape, etc. of those members
It can be. Further, when the brake release operation, since the load acting on the operating lever of France drop is alleviated by the second scan pulling the lever operating force of French drop becomes lighter, by performing the lever operation smoothly and reliably Can be.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a device for manually releasing a brake of an electric motor for opening and closing a shutter according to an embodiment of the present invention. FIG. The same or corresponding parts as in FIGS. 3 to 5 are denoted by the same reference numerals, and redundant description is omitted. In FIG. 1, a brake 3A of an electric motor 3 has a brake release lever 3 protruding outward in conjunction therewith.
B. This brake release lever 3B, the first brake release wire through the spring 7 (inner wire) 8 is connected, and, the brake solution
The release wire 8 has an end opposite to the brake release lever 3B connected to a French drop 9 for brake release operation.

[0010] Further, a specific example of the structure of the illustration will be described. A wire mounting plate 3C is integrally provided on the casing of the electric motor 3, and the wire mounting plate 3C and the flange portion of the base 10 of the French drop 9 are provided. An outer wire 11 is attached and fixed with bolts 12 over the wire 10a, and a brake release wire 8 as an inner wire is slidably inserted through the outer wire 11.

The French drop 9 includes an operation lever 13 that rotates about the pin P1 as a rotation fulcrum,
3 and a slider 14 that slides with the pin P2 as a guide, and a screw rod 15 integrally connected to the slider 14. The end of the brake release wire 8 is connected to the screw rod 15. Have been. The operation lever 13 is connected to the pin P1
When a predetermined stroke to the left or right in the drawing is rotated by using the rotation fulcrum as a rotation fulcrum, the spring is displaced to the rotation end by the action of the toggle spring.

A second spring 18 is interposed between a spring receiver 16 provided on the flange 10a side of the French drop base 10 and a spring receiver 17 provided on the screw rod 15. This second spring 18 is used to move the slider 14
To the pulling side of the brake release wire 8.

Here, the first spring 7 has a function of alleviating an excessive pulling force acting on the brake release wire 8 by the turning operation of the operation lever 13 of the French dropper 9. The accident of cutting the brake release wire 8 due to the excessive tensile force is prevented beforehand. Also, by providing the first spring,
Brake release lever, brake release wire,
Make sure the load applied to the lance falls within a certain range
It is easy to set the strength, shape, etc. of those members
It becomes something .

When the brake is released, the second spring 18 operates to release the French drop 9 .
The load acting on the bar 13 is reduced, and the French drop 9
The operation force of the operating lever 13 is lightened so that the lever operation can be performed smoothly and lightly.

In the structure described above, the French drop 9 is mounted on the guide rail 1 on the indoor side of the guide rail 1 at a position where an artificial brake release operation is possible, and used for use.

Next, the operation will be described. The operation lever 13 of the French drop 9 is normally held in the state shown in FIG. The state odor Te, when the power failure, the electric motor 4
Is in an interlocked state by the brake 3A. In such a case, when the rotational operation of the operating lever 13 to the brake release side, conjunction with the slider 14 which slides the operation on the right side of FIG. 1, Ru pulled brake release wire 8. At this time, the second split
18 slides the slider 14 to the brake release wire 8
The operation lever is biased toward the pulling side, so that the operation lever
The turning operation force of 13 is light. The tensile force at this time is transmitted to the brake release lever 3B while being reduced by the first spring 7. When the brake release lever 3B is operated, the brake 3A of the electric motor 3 is released. Therefore, shutter opening and closing drive
Manual operation of the brake 3A of the electric motor 3
Can be opened easily and securely, and the shutter curtain
It can be opened and closed artificially .

[0017]

As described above, according to the present invention, when the operation lever for dropping the French is rotated, the brake release wire connected to the brake release lever of the electric motor via the first spring is turned on. by being pulled, than <br/> where the structure brake of the electric motor is released, at the time of power outage, the shutter curtain manually can easily be opened and quickly accommodate evacuation like during fire . In addition, since the brake release wire is not directly connected to the brake release lever , but the brake release wire and the brake release lever are connected by the first spring, the rotation of the French drop lever operation is performed. Excessive tensile force acting on the brake release wire can be reduced by the first spring,
It is possible to prevent an accident in which the brake release wire is disconnected due to the excessive tensile force. Also, the first spring
The brake release lever and brake
The load applied to the release wire and the French drop is constant
The strength of those members.
Setting of degree, shape, and the like can be facilitated . further,
At the time of the brake release operation, the operation of dropping France
Since the load acting on the lever is relieved by the second spring, the lever operating force of the French drop is reduced, and the lever operation can be performed smoothly and reliably.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a manual brake release device for an electric motor for opening and closing a shutter according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional side view of an electric winding shutter equipped with a French dropper in FIG. 1;

FIG. 3 is a front view showing a conventional electric winding shutter.

FIG. 4 is a schematic longitudinal sectional side view of FIG. 3;

FIG. 5 is an enlarged explanatory view of a shutter opening / closing drive device in FIG. 4;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Guide rail 3 Electric motor 3A Brake 3B Brake release lever 5 Shutter curtain 7 First spring 8 Brake release wire 9 Drop off France 13 Operation lever 18 Second spring

Claims (1)

(57) [Scope of request for utility model registration] (1) Motor braking is performed when power is not supplied including a power failure.
Brake and a brake releasing lever for releasing the brake
With the shutter up and down on both sides of the shutter opening and closing opening.
Shutter curtain between a pair of left and right guide rails
For electric motors for opening and closing shutters
Brake release device that performs the brake release operation.
The brake release lever is connected to the brake release wire
The first wire for relieving the excessive tension of the brake release wire.
And a manual brake release operation on the guide rail side is possible.
France dropped for brake release operation is provided on the Do position, Wai for the brake releasing the operating lever of the French drop
The brake release wire is connected with the French drop operation lever.
When the brake is released by pulling the ear,
The second to reduce the load on the operating lever
An electric motor for opening and closing a shutter, comprising a spring.
A manual release device .