JPH06185279A - Shutter opening and shutting machine - Google Patents

Abstract

PURPOSE:To cope with any of right and left and pullingdown according to a shutter installing condition by having a claw interlocking with notches of a chain wheel, and following to pulling down operation of a hand chain to remove the claw from the notches. CONSTITUTION:When a hand chain 1 is controlled in the case of service interruption of an electric ally-driven shutter opening and shutting machine, the hand chain 1 is pulled downward to vibrate a guide of a rotary block 10. After that, the claw is removed from a notch 3a of a chain wheel 3, and the hand chain 1 is freely controlled downward to make it possible to open the shutter. At that time, the claw interlocking in different directions of the tip of the claw is provided to the notch 3a of the chain wheel 3 to prevent rotation, and it is provided to an inlet and outlet of the hand chain 1. Following to pulling down operation of the hand chain 1, the claw is removed from the notch 3a of the chain wheel 3, and the shutter can be opened and sut. According to the constitution, right and left winding control is free, and economical and practical effect can be displayed from the aspects of stock-control and execution.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shutter opening / closing machine used when an opening surface of a building or a house is opened / closed by an electric shutter or the like. The present invention relates to a shutter opening / closing device suitable for opening and closing.

[0002]

2. Description of the Related Art Electric shutters are widely used to open and close the opening surfaces of buildings, houses and the like. In principle, the above electric shutters are opened and closed by motors to open and close the openings of buildings and houses, but in the event of an emergency such as a power outage, a hand chain attached to the shutter was used to open and close the shutters. However, the hand chain 1 is shown in FIGS.
Chain wheel 3 attached to the rotary shaft 2 as shown in
In the normal state, the movement is blocked by the chain pressing plate 4 as shown in FIG.

The chain wheel 3 for engaging the hand chain 1 penetrates the solenoid 5 and is supported by the brake case 6, and is urged toward the brake plate 8 by a coil spring 7 externally inserted in the center of the solenoid 5. , The ratchet 9 blocks the clockwise rotation. And
When the solenoid 5 is excited, it is released from the brake plate 8 against the resilient and urging force of the coil spring 7, and can be rotated counterclockwise by a motor (not shown) as shown in FIG. .

[0004]

As described above, the reason why the ratchet is used to keep the rotation direction of the chain wheel constant is that if the chain wheel can rotate in both directions, the winding direction is mistaken and the shutter is loosened or excessively wound. This is because the shaft may be damaged. However, considering the installation location of the shutter, the space where the hand chain can be operated, etc., it is not possible to limit it to one direction. Therefore, it is necessary to prepare either left-handed or right-handed shutter opening / closing devices, which causes various obstacles in production control, inventory control, cost increase, construction on site, and the like.

The present invention has been made in view of the above points, has no left-right handcuff operation, and can be used for any of production control, inventory control, and convenient construction on site, and The purpose of the present invention is to provide a shutter opening / closing device that can reduce costs.

[0006]

In order to achieve the above object, according to the present invention, in a shutter opening / closing device having a built-in chain wheel for winding and engaging the upper part of a hand chain, a large number of chains are provided on the peripheral surface of the chain wheel. The cutouts are cut out, and rotation preventing means having claws that engage with the cutouts of the chain wheel in different toe directions are symmetrically provided at the entrances and exits of the hand chains, and follow the pulling operation of the hand chains. The shutter opening / closing machine is provided with a rotation blocking releasing means for separating the claw of the rotation blocking means from the notch of the chain wheel.

Further, in a shutter opening and closing machine having a built-in chain wheel that winds around the upper part of a hand chain, a large number of notches are cut out on the circumferential surface of the chain wheel, and the notch below the center of the chain wheel is cut out. Rotation-blocking release means is provided to dispose the rotation-blocking means having engaging claws at each of the hand chain entrances and exits so that the claws of the rotation-blocking means are separated from the notches of the chain wheel in accordance with the pulling operation of the hand chain. A shutter opening and closing device characterized by being attached to the means.

[0008]

[Operation] In the first embodiment, when the hand chain 1 located on the left side is pulled downward to open the shutter in an emergency such as a power failure, the guide 10b of the rotation switching block 10 moves the shaft 10c by the hand chain 1. It swings counterclockwise as a fulcrum, and the claw 10a moves to the chain wheel 3
2, the hand chain 1 on the left side can be freely pulled downward, and the shutter can be opened.

In the second example of the embodiment, when the hand chain 1 located on the left side in the drawing is pulled downward to open the shutter in an emergency such as a power failure, the receiver that is in contact with the hand chain 1 is pulled down. The claw pieces 12 and 12 'are pushed down against the elastic force of the coil spring 13 by the sliding movement, and the receiving claws 12a of the rotation switching block 20 swing about the shaft 20c of the rotation block 20 as a fulcrum. The claw 20b is disengaged from the notch 3a of the chain wheel 3 to be in the state shown in FIG. 4, and the left hand chain 1 can be freely pulled downward, so that the shutter can be opened.

Further, in the third embodiment, when the hand chain 1 located on the left side is pulled downward to open the shutter in an emergency situation such as power failure, the rotation switching block 30
Guide 30c swings clockwise about shaft 15 as a fulcrum by hand chain 1, claw 30b disengages from notch 3a of chain wheel 3, and the state shown in FIG. 6 is obtained, where left hand chain 1 is free to move downward. Can be pulled,
You can open the shutter.

Furthermore, in the fourth embodiment, when the hand chain is pulled downward to open the shutter in an emergency such as a power failure, the wide chain presser 4 causes the hinge portion 4 to move.
It swings clockwise around a as a fulcrum. Then, the rotation switching block 40 connected to the chain presser 4 and the pin 1
The other plate is pulled, and swings from the state of FIG. 8 as a fulcrum as shown in FIG. 10 to disengage the claw 40a engaged with the notch of the chain wheel 3 and lower the hand chain 1 downward. The shutter can be opened by pulling to.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Several embodiments of the shutter opening / closing device according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a front view of a shutter opening / closing device in an electric shutter. 2 is an enlarged cross-sectional view showing a first embodiment of the shutter opening / closing device according to the present invention, and FIG. 3 is a perspective view of a rotation switching block in the first embodiment shown in FIG.

In FIG. 1, a shutter opening / closing device 100 for a lightweight shutter includes a case 101 having a motor with a speed reducer for opening / closing a shutter (not shown), a chain wheel, and the like. It is built in, and the output shaft 2 and the shutter shaft are connected by a rotation transmission mechanism such as a sprocket and a chain so that rotation is transmitted. In the figure, 1 is a hand chain, and 4 is a chain pressing plate.

2 and 3, the hand chain 1 for opening and closing the shutter in an emergency such as a power failure.
Is an endless chain of a length that can be manually operated, and is wound around substantially the upper half of a chain wheel 3 axially attached to a rotary shaft 2. The chain wheel 3 around which the hand chain 1 is wound and engaged is supported by the brake case 6, and the claws 10a, 1 of the rotation switching blocks 10, 10 'are supported.
Notches 3a with which 0'a engages are formed in the peripheral surface at several places (7 places in the illustrated example). The rotation switching blocks 10 and 10 ′, which are arranged opposite to each other on the left and right sides, are claws 10 serving as rotation preventing means.
a, 10'a and a guide 10b serving as a rotation blocking releasing means,
10'b and shafts 10c, 10'c, and the shafts 10c, 10'c are pivotally supported by bearing plates 11, 11 erected on the bottom plate 6a of the brake case 6.

The claws 10a and 10'a of the rotation switching blocks 10 and 10 'are always in contact with the circumferential surface of the chain wheel 3 in different tip directions. The guides 10b and 10'b of the rotation switching blocks 10 and 10 'are always in contact with the hand chain. Hand chain 1 located on the left side to open the shutter in case of emergency such as power outage
Is pulled downward, the guide 10 of the rotation switching block 10
b swings counterclockwise around the shaft 10c as a fulcrum by the hand chain 1, the pawl 10a comes off the notch 3a of the chain wheel 3, and the state shown in FIG. 2 is reached, and the left hand chain 1 is freely pulled downward. You can open the shutter.

FIG. 4 is an enlarged sectional view showing a second embodiment of the shutter opening / closing machine according to the present invention. FIG. 5 is a perspective view of the rotation switching block in the second embodiment shown in FIG. 4 and 5, the hand chain 1 that opens and closes the shutter in an emergency such as a power failure is an endless chain of a length that can be manually operated, and is a chain attached to the rotary shaft 2 as in the first embodiment. The wheel 3 is wound around the upper half of the circumference. The chain wheel 3 around which the hand chain 1 is wound and engaged is rotatably supported by the brake case 6, and the claws 20 of the rotation switching blocks 20 and 20 '.
Notches 3a with which a and 20'a engage are cut out at several places (7 places in the illustrated example) on the peripheral surface. Rotation switching block 2
Numerals 0 and 20 'are pawls 20a and 20'a which are engaged with the notches 3a of the chain wheel 3 and serve as rotation preventing means and the receiving pawl piece 1.
Claws 20b, 20'b and their shafts 20c, which are engaged with the receiving claws 12a, 12'a of 2, 12 'and serve as rotation blocking releasing means.
20'c, and the shafts 20c and 20'c are pivotally supported by the brake case 6 so as to be swingable. The claws 20a, 20'a of the rotation switching blocks 20, 20 'are always in contact with the peripheral surface of the chain wheel 3. Further, the claws 20a, 20'a of the rotation switching blocks 20, 20 'are always engaged with the receiving claws 12a, 12a' of the receiving claw pieces 12, 12 'in different toe directions.

When the hand chain 1 located on the left side is pulled downward to open the shutter in an emergency such as a power failure, the receiving claw pieces 12, which are in contact with the hand chain 1,
12 'is pushed down against the elastic force of the coil spring 13 by its sliding contact operation, and its receiving claw 12a is rotated about the shaft 20c of the rotary block 20 as a fulcrum.
Oscillates, and the claw 20b moves the notch 3a of the chain wheel 3
The hand chain 1 on the left side can be freely pulled downward, and the shutter can be opened.

FIG. 6 is an enlarged sectional view showing a third embodiment of the shutter opening / closing machine according to the present invention. In addition, FIG.
FIG. 7 is a perspective view of a rotation switching block in the third example of implementation shown in FIG. 6. 6 and 7, the hand chain 1 for opening and closing the shutter in an emergency such as a power failure is
It is an endless chain of a length that can be manually operated, and is wound around substantially the upper half of a chain wheel 3 axially attached to a rotary shaft 2 as in the previous embodiment. A chain wheel 3 around which the hand chain 1 is wound and engaged is built in a bearing in a brake case 6, and includes rotation switching blocks 30, 30 '.
Notches 3a with which the claws 30a and 30'a of the No. 3 engage are cut out at several places (7 places in the illustrated example) on the circumferential surface. As shown in FIG. 7, the rotation switching blocks 30 and 30 'have tongue pieces 30a and 30a' formed on both sides of the base end by bending, and the claw 30 is provided in the middle.
The b and 30b 'are bent and the guides 30c and 30c' are bent and formed at the tips. The rotation switching blocks 30 and 30 'having the above-described configuration are shaken by inserting the shafts 15 and 15' into the tongue pieces 30a and 30a 'at the base ends of the bearing plates 14 and 14' attached to the middle stage of the brake case 6. It is rotatably supported.

Claws 30 of the rotation switching blocks 30, 30 '
b and 30b 'are always in contact with the circumferential surface of the chain wheel 3 in different toe directions. The guides 30c and 30'c of the rotation switching blocks 30 and 30 'are always in contact with the hand chain 1. When the hand chain 1 located on the left side is pulled downward to open the shutter in an emergency such as a power failure, the guide 30c of the rotation switching block 30 is pulled.
Swings clockwise by the hand chain 1 about the shaft 15 as a fulcrum, and the claw 30b moves through the notch 3 in the chain wheel 3.
After being released from a, the state shown in FIG. 6 is reached, and the left hand chain 1 can be freely pulled downward and the shutter can be opened.

FIG. 8 is an enlarged sectional view showing a fourth embodiment of the shutter opening / closing machine according to the present invention. In addition, FIG.
FIG. 9 is a perspective view of a rotation switching block in the fourth example of implementation shown in FIG. 8. Further, FIG. 10 is an enlarged cross-sectional view showing a state in which the rotation switching block is removed. 8 to 10, a hand chain 1 that opens and closes a shutter in an emergency such as a power failure is an endless chain of a length that can be manually operated, and is a substantially upper half circumference of a chain wheel 3 axially attached to a rotating shaft 2. It is wound around. The chain wheel 3 around which the hand chain 1 is wound and engaged is supported by the brake case 6, and the claw 4 of the rotation switching block 40 is supported.
The notch 3a with which 0a engages is cut out at several places on the peripheral surface.

The rotation switching blocks 40 are V-shaped metal fittings attached to both entrances and exits of the hand chain 1 opened in the shutter case 6 and bifurcated as shown in FIG. Claw 40 engaging the notch 3a
a is formed and a hole 40b into which the pin 16 is inserted on the other side
And a shaft stop hole 40c is formed in the branch base portion. The rotation switching block 40 has a wide chain pressing plate 4 that contacts the left and right hand chains 1 and 1.
Is swingably supported by the mounting plate 17 of the chain holding plate 4
It is connected with the base of the pin by a pin 16. Further, 5 is a solenoid, and 7 is a coil spring for urging the chain wheel 3 toward the brake plate. When the hand chain is pulled downward to open the shutter in an emergency such as a power failure, the chain presser 4 swings clockwise with the hinge portion 4a as a fulcrum. Then, the other plate of the rotation switching block 40 connected by the chain presser 4 and the pin 16 is pulled, and swings from the state of FIG. 8 as a fulcrum as shown in FIG. Claw 4 that was engaged in the notch
By releasing 0a and pulling the hand chain 1 downward, the shutter can be opened.

[0022]

As described above, the shutter opening and closing device according to the present invention has a rotation preventing means having a large number of notches on the peripheral surface of the chain wheel and having the claws that engage with the notches of the chain wheel. In addition to the above, the rotation-blocking releasing means for releasing the claws of the rotation-blocking means from the notches of the chain wheel by following the pulling-down operation of the hand chain is attached to the rotation-blocking means. Therefore, depending on the installation conditions of the shutter, it is possible to deal with both cases without preparing a shutter opening / closing device for exclusive use on the left side pull-down, right side pull-down, etc., and it is extremely economical in terms of inventory management and construction. Moreover, it is possible to exert a practical effect.

[Brief description of drawings]

FIG. 1 is a front view of a shutter opening / closing machine of an electric shutter.

FIG. 2 is an enlarged sectional view showing a first example of implementation of a shutter opening / closing machine according to the present invention.

FIG. 3 is a perspective view of a rotation switching block in the first embodiment shown in FIG.

FIG. 4 is an enlarged sectional view showing a second embodiment of the shutter opening / closing machine according to the present invention.

FIG. 5 is a perspective view of a rotation switching block in the second embodiment shown in FIG.

FIG. 6 is an enlarged cross-sectional view showing a third embodiment of the shutter opening / closing machine according to the present invention.

FIG. 7 is a perspective view of a rotation switching block in the third example of implementation shown in FIG. 6;

FIG. 8 is an enlarged cross-sectional view showing a fourth embodiment of the shutter opening / closing machine according to the present invention.

9 is a perspective view of a rotation switching block in the fourth example of implementation shown in FIG. 8. FIG.

10 is an enlarged partial cross-sectional view showing a state different from FIG.

FIG. 11 is an enlarged sectional view showing an example of a conventional shutter opening / closing machine.

FIG. 12 is a side sectional view of FIG.

[Explanation of symbols]

1 Hand Chain 2 Rotating Shaft 3 Chain Wheel 3a Notch 4 Chain Holding Plate 5 Solade 6 Brake Case 7 Coil Spring 10, 10 ', 20, 20', 30, 30 ', 40, 4
0'rotation switching block 10a, 10'a, 20a, 20'a, 30a, 30 '
a claw 10b, 10'b guide 10c, 10'c, 20c, 20'c shaft 11 bearing plate 12 receiving claw piece 12a receiving claw 14, 14 'bearing plate 15, 15' shaft 16 pin 17 mounting plate 40b hole 40c hole 100 shutter opening and closing machine 101 case 102 stop string

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Takeshi Yamada 3-62, Samegaji, 14 Yamamura, Kaifu-gun, Aichi Harmony Co., Ltd.

Claims (2)

[Claims] 1. A shutter opening and closing machine having a built-in chain wheel that winds around the upper part of a hand chain, wherein a plurality of cutouts are cut out on the peripheral surface of the chain wheel, and the cutouts of the chain wheel are engaged. Rotation blocking means having claws are provided symmetrically at the entrances and exits of each hand chain, and rotation blocking releasing means is provided for separating the claws of the rotation blocking means from the notches of the chain wheel by following the pulling operation of the hand chain. A shutter opening and closing device. 2. A shutter opening / closing machine having a built-in chain wheel for winding and engaging the upper part of a hand chain, wherein a large number of notches are formed on the circumferential surface of the chain wheel, and the notch below the center of the chain wheel is formed. Arrangement of rotation preventing means having engaging claws at each hand chain entrance / exit,
A shutter opening / closing machine characterized in that a rotation preventing releasing means for separating a claw of the rotation preventing means from a notch of a chain wheel is attached to the rotation preventing means so as to follow a pulling operation of a hand chain.